diff --git a/c++/greptime/v1/region/server.pb.cc b/c++/greptime/v1/region/server.pb.cc
index 10eb7f6..9eeea31 100644
--- a/c++/greptime/v1/region/server.pb.cc
+++ b/c++/greptime/v1/region/server.pb.cc
@@ -78,6 +78,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORIT
 PROTOBUF_CONSTEXPR RegionResponse::RegionResponse(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.extensions_)*/{::_pbi::ConstantInitialized()}
+  , /*decltype(_impl_.metadata_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.header_)*/nullptr
   , /*decltype(_impl_.affected_rows_)*/uint64_t{0u}
   , /*decltype(_impl_._cached_size_)*/{}} {}
@@ -487,10 +488,24 @@ struct SyncRequestDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 SyncRequestDefaultTypeInternal _SyncRequest_default_instance_;
+PROTOBUF_CONSTEXPR ListMetadataRequest::ListMetadataRequest(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.region_ids_)*/{}
+  , /*decltype(_impl_._region_ids_cached_byte_size_)*/{0}
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct ListMetadataRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ListMetadataRequestDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ListMetadataRequestDefaultTypeInternal() {}
+  union {
+    ListMetadataRequest _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListMetadataRequestDefaultTypeInternal _ListMetadataRequest_default_instance_;
 }  // namespace region
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[34];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[35];
 static constexpr ::_pb::EnumDescriptor const** file_level_enum_descriptors_greptime_2fv1_2fregion_2fserver_2eproto = nullptr;
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fregion_2fserver_2eproto = nullptr;
 
@@ -536,6 +551,7 @@ const uint32_t TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets[] PR
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
+  ::_pbi::kInvalidFieldOffsetTag,
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionRequest, _impl_.body_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionResponse_ExtensionsEntry_DoNotUse, _has_bits_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionResponse_ExtensionsEntry_DoNotUse, _internal_metadata_),
@@ -556,6 +572,7 @@ const uint32_t TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets[] PR
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionResponse, _impl_.header_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionResponse, _impl_.affected_rows_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionResponse, _impl_.extensions_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::RegionResponse, _impl_.metadata_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::InsertRequests, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -798,42 +815,50 @@ const uint32_t TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets[] PR
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   PROTOBUF_FIELD_OFFSET(::greptime::v1::region::SyncRequest, _impl_.manifest_info_),
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ListMetadataRequest, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::region::ListMetadataRequest, _impl_.region_ids_),
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
   { 0, 8, -1, sizeof(::greptime::v1::region::RegionRequestHeader_TracingContextEntry_DoNotUse)},
   { 10, -1, -1, sizeof(::greptime::v1::region::RegionRequestHeader)},
   { 19, -1, -1, sizeof(::greptime::v1::region::RegionRequest)},
-  { 42, 50, -1, sizeof(::greptime::v1::region::RegionResponse_ExtensionsEntry_DoNotUse)},
-  { 52, -1, -1, sizeof(::greptime::v1::region::RegionResponse)},
-  { 61, -1, -1, sizeof(::greptime::v1::region::InsertRequests)},
-  { 68, -1, -1, sizeof(::greptime::v1::region::DeleteRequests)},
-  { 75, -1, -1, sizeof(::greptime::v1::region::InsertRequest)},
-  { 83, -1, -1, sizeof(::greptime::v1::region::DeleteRequest)},
-  { 91, -1, -1, sizeof(::greptime::v1::region::QueryRequest)},
-  { 100, -1, -1, sizeof(::greptime::v1::region::CreateRequests)},
-  { 107, 115, -1, sizeof(::greptime::v1::region::CreateRequest_OptionsEntry_DoNotUse)},
-  { 117, -1, -1, sizeof(::greptime::v1::region::CreateRequest)},
-  { 129, -1, -1, sizeof(::greptime::v1::region::DropRequests)},
-  { 136, -1, -1, sizeof(::greptime::v1::region::DropRequest)},
-  { 144, 152, -1, sizeof(::greptime::v1::region::OpenRequest_OptionsEntry_DoNotUse)},
-  { 154, -1, -1, sizeof(::greptime::v1::region::OpenRequest)},
-  { 164, -1, -1, sizeof(::greptime::v1::region::CloseRequest)},
-  { 171, -1, -1, sizeof(::greptime::v1::region::AlterRequests)},
-  { 178, -1, -1, sizeof(::greptime::v1::region::AlterRequest)},
-  { 195, -1, -1, sizeof(::greptime::v1::region::AddColumns)},
-  { 202, -1, -1, sizeof(::greptime::v1::region::DropColumns)},
-  { 209, -1, -1, sizeof(::greptime::v1::region::AddColumn)},
-  { 217, -1, -1, sizeof(::greptime::v1::region::DropColumn)},
-  { 224, -1, -1, sizeof(::greptime::v1::region::FlushRequest)},
-  { 231, -1, -1, sizeof(::greptime::v1::region::Regular)},
-  { 237, -1, -1, sizeof(::greptime::v1::region::StrictWindow)},
-  { 244, -1, -1, sizeof(::greptime::v1::region::CompactRequest)},
-  { 254, -1, -1, sizeof(::greptime::v1::region::TruncateRequest)},
-  { 261, -1, -1, sizeof(::greptime::v1::region::RegionColumnDef)},
-  { 269, -1, -1, sizeof(::greptime::v1::region::BulkInsertRequest)},
-  { 278, -1, -1, sizeof(::greptime::v1::region::MitoManifestInfo)},
-  { 285, -1, -1, sizeof(::greptime::v1::region::MetricManifestInfo)},
-  { 293, -1, -1, sizeof(::greptime::v1::region::SyncRequest)},
+  { 43, 51, -1, sizeof(::greptime::v1::region::RegionResponse_ExtensionsEntry_DoNotUse)},
+  { 53, -1, -1, sizeof(::greptime::v1::region::RegionResponse)},
+  { 63, -1, -1, sizeof(::greptime::v1::region::InsertRequests)},
+  { 70, -1, -1, sizeof(::greptime::v1::region::DeleteRequests)},
+  { 77, -1, -1, sizeof(::greptime::v1::region::InsertRequest)},
+  { 85, -1, -1, sizeof(::greptime::v1::region::DeleteRequest)},
+  { 93, -1, -1, sizeof(::greptime::v1::region::QueryRequest)},
+  { 102, -1, -1, sizeof(::greptime::v1::region::CreateRequests)},
+  { 109, 117, -1, sizeof(::greptime::v1::region::CreateRequest_OptionsEntry_DoNotUse)},
+  { 119, -1, -1, sizeof(::greptime::v1::region::CreateRequest)},
+  { 131, -1, -1, sizeof(::greptime::v1::region::DropRequests)},
+  { 138, -1, -1, sizeof(::greptime::v1::region::DropRequest)},
+  { 146, 154, -1, sizeof(::greptime::v1::region::OpenRequest_OptionsEntry_DoNotUse)},
+  { 156, -1, -1, sizeof(::greptime::v1::region::OpenRequest)},
+  { 166, -1, -1, sizeof(::greptime::v1::region::CloseRequest)},
+  { 173, -1, -1, sizeof(::greptime::v1::region::AlterRequests)},
+  { 180, -1, -1, sizeof(::greptime::v1::region::AlterRequest)},
+  { 197, -1, -1, sizeof(::greptime::v1::region::AddColumns)},
+  { 204, -1, -1, sizeof(::greptime::v1::region::DropColumns)},
+  { 211, -1, -1, sizeof(::greptime::v1::region::AddColumn)},
+  { 219, -1, -1, sizeof(::greptime::v1::region::DropColumn)},
+  { 226, -1, -1, sizeof(::greptime::v1::region::FlushRequest)},
+  { 233, -1, -1, sizeof(::greptime::v1::region::Regular)},
+  { 239, -1, -1, sizeof(::greptime::v1::region::StrictWindow)},
+  { 246, -1, -1, sizeof(::greptime::v1::region::CompactRequest)},
+  { 256, -1, -1, sizeof(::greptime::v1::region::TruncateRequest)},
+  { 263, -1, -1, sizeof(::greptime::v1::region::RegionColumnDef)},
+  { 271, -1, -1, sizeof(::greptime::v1::region::BulkInsertRequest)},
+  { 280, -1, -1, sizeof(::greptime::v1::region::MitoManifestInfo)},
+  { 287, -1, -1, sizeof(::greptime::v1::region::MetricManifestInfo)},
+  { 295, -1, -1, sizeof(::greptime::v1::region::SyncRequest)},
+  { 305, -1, -1, sizeof(::greptime::v1::region::ListMetadataRequest)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -871,6 +896,7 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::region::_MitoManifestInfo_default_instance_._instance,
   &::greptime::v1::region::_MetricManifestInfo_default_instance_._instance,
   &::greptime::v1::region::_SyncRequest_default_instance_._instance,
+  &::greptime::v1::region::_ListMetadataRequest_default_instance_._instance,
 };
 
 const char descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
@@ -882,7 +908,7 @@ const char descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto[] P
   "onRequestHeader.TracingContextEntry\022\016\n\006d"
   "bname\030\003 \001(\t\0220\n\rquery_context\030\006 \001(\0132\031.gre"
   "ptime.v1.QueryContext\0325\n\023TracingContextE"
-  "ntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\354\006\n"
+  "ntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\256\007\n"
   "\rRegionRequest\0227\n\006header\030\001 \001(\0132\'.greptim"
   "e.v1.region.RegionRequestHeader\0225\n\007inser"
   "ts\030\003 \001(\0132\".greptime.v1.region.InsertRequ"
@@ -904,85 +930,88 @@ const char descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto[] P
   "!.greptime.v1.region.AlterRequestsH\000\022<\n\013"
   "bulk_insert\030\020 \001(\0132%.greptime.v1.region.B"
   "ulkInsertRequestH\000\022/\n\004sync\030\021 \001(\0132\037.grept"
-  "ime.v1.region.SyncRequestH\000B\006\n\004body\"\317\001\n\016"
-  "RegionResponse\022+\n\006header\030\001 \001(\0132\033.greptim"
-  "e.v1.ResponseHeader\022\025\n\raffected_rows\030\002 \001"
-  "(\004\022F\n\nextensions\030\003 \003(\01322.greptime.v1.reg"
-  "ion.RegionResponse.ExtensionsEntry\0321\n\017Ex"
-  "tensionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001("
-  "\014:\0028\001\"E\n\016InsertRequests\0223\n\010requests\030\001 \003("
-  "\0132!.greptime.v1.region.InsertRequest\"E\n\016"
-  "DeleteRequests\0223\n\010requests\030\001 \003(\0132!.grept"
-  "ime.v1.region.DeleteRequest\"C\n\rInsertReq"
-  "uest\022\021\n\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(\0132\021."
-  "greptime.v1.Rows\"C\n\rDeleteRequest\022\021\n\treg"
-  "ion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(\0132\021.greptime.v1"
-  ".Rows\"h\n\014QueryRequest\0227\n\006header\030\001 \001(\0132\'."
-  "greptime.v1.region.RegionRequestHeader\022\021"
-  "\n\tregion_id\030\002 \001(\004\022\014\n\004plan\030\003 \001(\014\"E\n\016Creat"
-  "eRequests\0223\n\010requests\030\001 \003(\0132!.greptime.v"
-  "1.region.CreateRequest\"\200\002\n\rCreateRequest"
-  "\022\021\n\tregion_id\030\001 \001(\004\022\016\n\006engine\030\002 \001(\t\0228\n\013c"
-  "olumn_defs\030\003 \003(\0132#.greptime.v1.region.Re"
-  "gionColumnDef\022\023\n\013primary_key\030\004 \003(\r\022\014\n\004pa"
-  "th\030\005 \001(\t\022\?\n\007options\030\006 \003(\0132..greptime.v1."
-  "region.CreateRequest.OptionsEntry\032.\n\014Opt"
-  "ionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028"
-  "\001\"A\n\014DropRequests\0221\n\010requests\030\001 \003(\0132\037.gr"
-  "eptime.v1.region.DropRequest\"3\n\013DropRequ"
-  "est\022\021\n\tregion_id\030\001 \001(\004\022\021\n\tfast_path\030\002 \001("
-  "\010\"\255\001\n\013OpenRequest\022\021\n\tregion_id\030\001 \001(\004\022\016\n\006"
-  "engine\030\002 \001(\t\022\014\n\004path\030\003 \001(\t\022=\n\007options\030\004 "
-  "\003(\0132,.greptime.v1.region.OpenRequest.Opt"
-  "ionsEntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r"
-  "\n\005value\030\002 \001(\t:\0028\001\"!\n\014CloseRequest\022\021\n\treg"
-  "ion_id\030\001 \001(\004\"C\n\rAlterRequests\0222\n\010request"
-  "s\030\001 \003(\0132 .greptime.v1.region.AlterReques"
-  "t\"\372\003\n\014AlterRequest\022\021\n\tregion_id\030\001 \001(\004\0225\n"
-  "\013add_columns\030\002 \001(\0132\036.greptime.v1.region."
-  "AddColumnsH\000\0227\n\014drop_columns\030\003 \001(\0132\037.gre"
-  "ptime.v1.region.DropColumnsH\000\022=\n\023modify_"
-  "column_types\030\005 \001(\0132\036.greptime.v1.ModifyC"
-  "olumnTypesH\000\0229\n\021set_table_options\030\006 \001(\0132"
-  "\034.greptime.v1.SetTableOptionsH\000\022=\n\023unset"
-  "_table_options\030\t \001(\0132\036.greptime.v1.Unset"
-  "TableOptionsH\000\022*\n\tset_index\030\n \001(\0132\025.grep"
-  "time.v1.SetIndexH\000\022.\n\013unset_index\030\013 \001(\0132"
-  "\027.greptime.v1.UnsetIndexH\000\0222\n\rdrop_defau"
-  "lts\030\014 \001(\0132\031.greptime.v1.DropDefaultsH\000\022\026"
-  "\n\016schema_version\030\004 \001(\004B\006\n\004kind\"@\n\nAddCol"
-  "umns\0222\n\013add_columns\030\001 \003(\0132\035.greptime.v1."
-  "region.AddColumn\"C\n\013DropColumns\0224\n\014drop_"
-  "columns\030\001 \003(\0132\036.greptime.v1.region.DropC"
-  "olumn\"v\n\tAddColumn\0227\n\ncolumn_def\030\001 \001(\0132#"
-  ".greptime.v1.region.RegionColumnDef\0220\n\010l"
-  "ocation\030\003 \001(\0132\036.greptime.v1.AddColumnLoc"
-  "ation\"\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"!\n\014Flu"
-  "shRequest\022\021\n\tregion_id\030\001 \001(\004\"\t\n\007Regular\""
-  "&\n\014StrictWindow\022\026\n\016window_seconds\030\001 \001(\003\""
-  "\231\001\n\016CompactRequest\022\021\n\tregion_id\030\001 \001(\004\022.\n"
-  "\007regular\030\002 \001(\0132\033.greptime.v1.region.Regu"
-  "larH\000\0229\n\rstrict_window\030\003 \001(\0132 .greptime."
-  "v1.region.StrictWindowH\000B\t\n\007options\"$\n\017T"
-  "runcateRequest\022\021\n\tregion_id\030\001 \001(\004\"P\n\017Reg"
-  "ionColumnDef\022*\n\ncolumn_def\030\001 \001(\0132\026.grept"
-  "ime.v1.ColumnDef\022\021\n\tcolumn_id\030\002 \001(\r\"Z\n\021B"
-  "ulkInsertRequest\022\021\n\tregion_id\030\001 \001(\004\022*\n\ta"
-  "rrow_ipc\030\002 \001(\0132\025.greptime.v1.ArrowIpcH\000B"
-  "\006\n\004body\"1\n\020MitoManifestInfo\022\035\n\025data_mani"
-  "fest_version\030\001 \001(\004\"V\n\022MetricManifestInfo"
-  "\022\035\n\025data_manifest_version\030\001 \001(\004\022!\n\031metad"
-  "ata_manifest_version\030\002 \001(\004\"\275\001\n\013SyncReque"
-  "st\022\021\n\tregion_id\030\001 \001(\004\022B\n\022mito_manifest_i"
-  "nfo\030\002 \001(\0132$.greptime.v1.region.MitoManif"
-  "estInfoH\000\022F\n\024metric_manifest_info\030\003 \001(\0132"
-  "&.greptime.v1.region.MetricManifestInfoH"
-  "\000B\017\n\rmanifest_info2Y\n\006Region\022O\n\006Handle\022!"
-  ".greptime.v1.region.RegionRequest\032\".grep"
-  "time.v1.region.RegionResponseB]\n\025io.grep"
-  "time.v1.regionB\006ServerZ<github.com/Grept"
-  "imeTeam/greptime-proto/go/greptime/v1/re"
-  "gionb\006proto3"
+  "ime.v1.region.SyncRequestH\000\022@\n\rlist_meta"
+  "data\030\022 \001(\0132\'.greptime.v1.region.ListMeta"
+  "dataRequestH\000B\006\n\004body\"\341\001\n\016RegionResponse"
+  "\022+\n\006header\030\001 \001(\0132\033.greptime.v1.ResponseH"
+  "eader\022\025\n\raffected_rows\030\002 \001(\004\022F\n\nextensio"
+  "ns\030\003 \003(\01322.greptime.v1.region.RegionResp"
+  "onse.ExtensionsEntry\022\020\n\010metadata\030\004 \001(\014\0321"
+  "\n\017ExtensionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030"
+  "\002 \001(\014:\0028\001\"E\n\016InsertRequests\0223\n\010requests\030"
+  "\001 \003(\0132!.greptime.v1.region.InsertRequest"
+  "\"E\n\016DeleteRequests\0223\n\010requests\030\001 \003(\0132!.g"
+  "reptime.v1.region.DeleteRequest\"C\n\rInser"
+  "tRequest\022\021\n\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001("
+  "\0132\021.greptime.v1.Rows\"C\n\rDeleteRequest\022\021\n"
+  "\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(\0132\021.greptim"
+  "e.v1.Rows\"h\n\014QueryRequest\0227\n\006header\030\001 \001("
+  "\0132\'.greptime.v1.region.RegionRequestHead"
+  "er\022\021\n\tregion_id\030\002 \001(\004\022\014\n\004plan\030\003 \001(\014\"E\n\016C"
+  "reateRequests\0223\n\010requests\030\001 \003(\0132!.grepti"
+  "me.v1.region.CreateRequest\"\200\002\n\rCreateReq"
+  "uest\022\021\n\tregion_id\030\001 \001(\004\022\016\n\006engine\030\002 \001(\t\022"
+  "8\n\013column_defs\030\003 \003(\0132#.greptime.v1.regio"
+  "n.RegionColumnDef\022\023\n\013primary_key\030\004 \003(\r\022\014"
+  "\n\004path\030\005 \001(\t\022\?\n\007options\030\006 \003(\0132..greptime"
+  ".v1.region.CreateRequest.OptionsEntry\032.\n"
+  "\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001("
+  "\t:\0028\001\"A\n\014DropRequests\0221\n\010requests\030\001 \003(\0132"
+  "\037.greptime.v1.region.DropRequest\"3\n\013Drop"
+  "Request\022\021\n\tregion_id\030\001 \001(\004\022\021\n\tfast_path\030"
+  "\002 \001(\010\"\255\001\n\013OpenRequest\022\021\n\tregion_id\030\001 \001(\004"
+  "\022\016\n\006engine\030\002 \001(\t\022\014\n\004path\030\003 \001(\t\022=\n\007option"
+  "s\030\004 \003(\0132,.greptime.v1.region.OpenRequest"
+  ".OptionsEntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001"
+  "(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"!\n\014CloseRequest\022\021\n"
+  "\tregion_id\030\001 \001(\004\"C\n\rAlterRequests\0222\n\010req"
+  "uests\030\001 \003(\0132 .greptime.v1.region.AlterRe"
+  "quest\"\372\003\n\014AlterRequest\022\021\n\tregion_id\030\001 \001("
+  "\004\0225\n\013add_columns\030\002 \001(\0132\036.greptime.v1.reg"
+  "ion.AddColumnsH\000\0227\n\014drop_columns\030\003 \001(\0132\037"
+  ".greptime.v1.region.DropColumnsH\000\022=\n\023mod"
+  "ify_column_types\030\005 \001(\0132\036.greptime.v1.Mod"
+  "ifyColumnTypesH\000\0229\n\021set_table_options\030\006 "
+  "\001(\0132\034.greptime.v1.SetTableOptionsH\000\022=\n\023u"
+  "nset_table_options\030\t \001(\0132\036.greptime.v1.U"
+  "nsetTableOptionsH\000\022*\n\tset_index\030\n \001(\0132\025."
+  "greptime.v1.SetIndexH\000\022.\n\013unset_index\030\013 "
+  "\001(\0132\027.greptime.v1.UnsetIndexH\000\0222\n\rdrop_d"
+  "efaults\030\014 \001(\0132\031.greptime.v1.DropDefaults"
+  "H\000\022\026\n\016schema_version\030\004 \001(\004B\006\n\004kind\"@\n\nAd"
+  "dColumns\0222\n\013add_columns\030\001 \003(\0132\035.greptime"
+  ".v1.region.AddColumn\"C\n\013DropColumns\0224\n\014d"
+  "rop_columns\030\001 \003(\0132\036.greptime.v1.region.D"
+  "ropColumn\"v\n\tAddColumn\0227\n\ncolumn_def\030\001 \001"
+  "(\0132#.greptime.v1.region.RegionColumnDef\022"
+  "0\n\010location\030\003 \001(\0132\036.greptime.v1.AddColum"
+  "nLocation\"\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"!\n"
+  "\014FlushRequest\022\021\n\tregion_id\030\001 \001(\004\"\t\n\007Regu"
+  "lar\"&\n\014StrictWindow\022\026\n\016window_seconds\030\001 "
+  "\001(\003\"\231\001\n\016CompactRequest\022\021\n\tregion_id\030\001 \001("
+  "\004\022.\n\007regular\030\002 \001(\0132\033.greptime.v1.region."
+  "RegularH\000\0229\n\rstrict_window\030\003 \001(\0132 .grept"
+  "ime.v1.region.StrictWindowH\000B\t\n\007options\""
+  "$\n\017TruncateRequest\022\021\n\tregion_id\030\001 \001(\004\"P\n"
+  "\017RegionColumnDef\022*\n\ncolumn_def\030\001 \001(\0132\026.g"
+  "reptime.v1.ColumnDef\022\021\n\tcolumn_id\030\002 \001(\r\""
+  "Z\n\021BulkInsertRequest\022\021\n\tregion_id\030\001 \001(\004\022"
+  "*\n\tarrow_ipc\030\002 \001(\0132\025.greptime.v1.ArrowIp"
+  "cH\000B\006\n\004body\"1\n\020MitoManifestInfo\022\035\n\025data_"
+  "manifest_version\030\001 \001(\004\"V\n\022MetricManifest"
+  "Info\022\035\n\025data_manifest_version\030\001 \001(\004\022!\n\031m"
+  "etadata_manifest_version\030\002 \001(\004\"\275\001\n\013SyncR"
+  "equest\022\021\n\tregion_id\030\001 \001(\004\022B\n\022mito_manife"
+  "st_info\030\002 \001(\0132$.greptime.v1.region.MitoM"
+  "anifestInfoH\000\022F\n\024metric_manifest_info\030\003 "
+  "\001(\0132&.greptime.v1.region.MetricManifestI"
+  "nfoH\000B\017\n\rmanifest_info\")\n\023ListMetadataRe"
+  "quest\022\022\n\nregion_ids\030\001 \003(\0042Y\n\006Region\022O\n\006H"
+  "andle\022!.greptime.v1.region.RegionRequest"
+  "\032\".greptime.v1.region.RegionResponseB]\n\025"
+  "io.greptime.v1.regionB\006ServerZ<github.co"
+  "m/GreptimeTeam/greptime-proto/go/greptim"
+  "e/v1/regionb\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_deps[3] = {
   &::descriptor_table_greptime_2fv1_2fcommon_2eproto,
@@ -991,9 +1020,9 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2freg
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto = {
-    false, false, 4332, descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto,
+    false, false, 4459, descriptor_table_protodef_greptime_2fv1_2fregion_2fserver_2eproto,
     "greptime/v1/region/server.proto",
-    &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once, descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_deps, 3, 34,
+    &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once, descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_deps, 3, 35,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fregion_2fserver_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto, file_level_enum_descriptors_greptime_2fv1_2fregion_2fserver_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fregion_2fserver_2eproto,
@@ -1361,6 +1390,7 @@ class RegionRequest::_Internal {
   static const ::greptime::v1::region::AlterRequests& alters(const RegionRequest* msg);
   static const ::greptime::v1::region::BulkInsertRequest& bulk_insert(const RegionRequest* msg);
   static const ::greptime::v1::region::SyncRequest& sync(const RegionRequest* msg);
+  static const ::greptime::v1::region::ListMetadataRequest& list_metadata(const RegionRequest* msg);
 };
 
 const ::greptime::v1::region::RegionRequestHeader&
@@ -1427,6 +1457,10 @@ const ::greptime::v1::region::SyncRequest&
 RegionRequest::_Internal::sync(const RegionRequest* msg) {
   return *msg->_impl_.body_.sync_;
 }
+const ::greptime::v1::region::ListMetadataRequest&
+RegionRequest::_Internal::list_metadata(const RegionRequest* msg) {
+  return *msg->_impl_.body_.list_metadata_;
+}
 void RegionRequest::set_allocated_inserts(::greptime::v1::region::InsertRequests* inserts) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_body();
@@ -1652,6 +1686,21 @@ void RegionRequest::set_allocated_sync(::greptime::v1::region::SyncRequest* sync
   }
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.RegionRequest.sync)
 }
+void RegionRequest::set_allocated_list_metadata(::greptime::v1::region::ListMetadataRequest* list_metadata) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  clear_body();
+  if (list_metadata) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(list_metadata);
+    if (message_arena != submessage_arena) {
+      list_metadata = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, list_metadata, submessage_arena);
+    }
+    set_has_list_metadata();
+    _impl_.body_.list_metadata_ = list_metadata;
+  }
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.RegionRequest.list_metadata)
+}
 RegionRequest::RegionRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
@@ -1748,6 +1797,11 @@ RegionRequest::RegionRequest(const RegionRequest& from)
           from._internal_sync());
       break;
     }
+    case kListMetadata: {
+      _this->_internal_mutable_list_metadata()->::greptime::v1::region::ListMetadataRequest::MergeFrom(
+          from._internal_list_metadata());
+      break;
+    }
     case BODY_NOT_SET: {
       break;
     }
@@ -1882,6 +1936,12 @@ void RegionRequest::clear_body() {
       }
       break;
     }
+    case kListMetadata: {
+      if (GetArenaForAllocation() == nullptr) {
+        delete _impl_.body_.list_metadata_;
+      }
+      break;
+    }
     case BODY_NOT_SET: {
       break;
     }
@@ -2038,6 +2098,14 @@ const char* RegionRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext*
         } else
           goto handle_unusual;
         continue;
+      // .greptime.v1.region.ListMetadataRequest list_metadata = 18;
+      case 18:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 146)) {
+          ptr = ctx->ParseMessage(_internal_mutable_list_metadata(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
       default:
         goto handle_unusual;
     }  // switch
@@ -2179,6 +2247,13 @@ uint8_t* RegionRequest::_InternalSerialize(
         _Internal::sync(this).GetCachedSize(), target, stream);
   }
 
+  // .greptime.v1.region.ListMetadataRequest list_metadata = 18;
+  if (_internal_has_list_metadata()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(18, _Internal::list_metadata(this),
+        _Internal::list_metadata(this).GetCachedSize(), target, stream);
+  }
+
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
@@ -2308,6 +2383,13 @@ size_t RegionRequest::ByteSizeLong() const {
           *_impl_.body_.sync_);
       break;
     }
+    // .greptime.v1.region.ListMetadataRequest list_metadata = 18;
+    case kListMetadata: {
+      total_size += 2 +
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+          *_impl_.body_.list_metadata_);
+      break;
+    }
     case BODY_NOT_SET: {
       break;
     }
@@ -2410,6 +2492,11 @@ void RegionRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::
           from._internal_sync());
       break;
     }
+    case kListMetadata: {
+      _this->_internal_mutable_list_metadata()->::greptime::v1::region::ListMetadataRequest::MergeFrom(
+          from._internal_list_metadata());
+      break;
+    }
     case BODY_NOT_SET: {
       break;
     }
@@ -2487,12 +2574,21 @@ RegionResponse::RegionResponse(const RegionResponse& from)
   RegionResponse* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       /*decltype(_impl_.extensions_)*/{}
+    , decltype(_impl_.metadata_){}
     , decltype(_impl_.header_){nullptr}
     , decltype(_impl_.affected_rows_){}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
   _this->_impl_.extensions_.MergeFrom(from._impl_.extensions_);
+  _impl_.metadata_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.metadata_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_metadata().empty()) {
+    _this->_impl_.metadata_.Set(from._internal_metadata(), 
+      _this->GetArenaForAllocation());
+  }
   if (from._internal_has_header()) {
     _this->_impl_.header_ = new ::greptime::v1::ResponseHeader(*from._impl_.header_);
   }
@@ -2506,10 +2602,15 @@ inline void RegionResponse::SharedCtor(
   (void)is_message_owned;
   new (&_impl_) Impl_{
       /*decltype(_impl_.extensions_)*/{::_pbi::ArenaInitialized(), arena}
+    , decltype(_impl_.metadata_){}
     , decltype(_impl_.header_){nullptr}
     , decltype(_impl_.affected_rows_){uint64_t{0u}}
     , /*decltype(_impl_._cached_size_)*/{}
   };
+  _impl_.metadata_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.metadata_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
 }
 
 RegionResponse::~RegionResponse() {
@@ -2526,6 +2627,7 @@ inline void RegionResponse::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   _impl_.extensions_.Destruct();
   _impl_.extensions_.~MapField();
+  _impl_.metadata_.Destroy();
   if (this != internal_default_instance()) delete _impl_.header_;
 }
 
@@ -2544,6 +2646,7 @@ void RegionResponse::Clear() {
   (void) cached_has_bits;
 
   _impl_.extensions_.Clear();
+  _impl_.metadata_.ClearToEmpty();
   if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
     delete _impl_.header_;
   }
@@ -2587,6 +2690,15 @@ const char* RegionResponse::_InternalParse(const char* ptr, ::_pbi::ParseContext
         } else
           goto handle_unusual;
         continue;
+      // bytes metadata = 4;
+      case 4:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 34)) {
+          auto str = _internal_mutable_metadata();
+          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
       default:
         goto handle_unusual;
     }  // switch
@@ -2655,6 +2767,12 @@ uint8_t* RegionResponse::_InternalSerialize(
     }
   }
 
+  // bytes metadata = 4;
+  if (!this->_internal_metadata().empty()) {
+    target = stream->WriteBytesMaybeAliased(
+        4, this->_internal_metadata(), target);
+  }
+
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
@@ -2680,6 +2798,13 @@ size_t RegionResponse::ByteSizeLong() const {
     total_size += RegionResponse_ExtensionsEntry_DoNotUse::Funcs::ByteSizeLong(it->first, it->second);
   }
 
+  // bytes metadata = 4;
+  if (!this->_internal_metadata().empty()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::BytesSize(
+        this->_internal_metadata());
+  }
+
   // .greptime.v1.ResponseHeader header = 1;
   if (this->_internal_has_header()) {
     total_size += 1 +
@@ -2711,6 +2836,9 @@ void RegionResponse::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const :
   (void) cached_has_bits;
 
   _this->_impl_.extensions_.MergeFrom(from._impl_.extensions_);
+  if (!from._internal_metadata().empty()) {
+    _this->_internal_set_metadata(from._internal_metadata());
+  }
   if (from._internal_has_header()) {
     _this->_internal_mutable_header()->::greptime::v1::ResponseHeader::MergeFrom(
         from._internal_header());
@@ -2734,8 +2862,14 @@ bool RegionResponse::IsInitialized() const {
 
 void RegionResponse::InternalSwap(RegionResponse* other) {
   using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
   _impl_.extensions_.InternalSwap(&other->_impl_.extensions_);
+  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
+      &_impl_.metadata_, lhs_arena,
+      &other->_impl_.metadata_, rhs_arena
+  );
   ::PROTOBUF_NAMESPACE_ID::internal::memswap<
       PROTOBUF_FIELD_OFFSET(RegionResponse, _impl_.affected_rows_)
       + sizeof(RegionResponse::_impl_.affected_rows_)
@@ -9320,6 +9454,199 @@ void SyncRequest::InternalSwap(SyncRequest* other) {
       file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[33]);
 }
 
+// ===================================================================
+
+class ListMetadataRequest::_Internal {
+ public:
+};
+
+ListMetadataRequest::ListMetadataRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.region.ListMetadataRequest)
+}
+ListMetadataRequest::ListMetadataRequest(const ListMetadataRequest& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  ListMetadataRequest* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.region_ids_){from._impl_.region_ids_}
+    , /*decltype(_impl_._region_ids_cached_byte_size_)*/{0}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.region.ListMetadataRequest)
+}
+
+inline void ListMetadataRequest::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.region_ids_){arena}
+    , /*decltype(_impl_._region_ids_cached_byte_size_)*/{0}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+}
+
+ListMetadataRequest::~ListMetadataRequest() {
+  // @@protoc_insertion_point(destructor:greptime.v1.region.ListMetadataRequest)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void ListMetadataRequest::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.region_ids_.~RepeatedField();
+}
+
+void ListMetadataRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void ListMetadataRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.region.ListMetadataRequest)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.region_ids_.Clear();
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* ListMetadataRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // repeated uint64 region_ids = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          ptr = ::PROTOBUF_NAMESPACE_ID::internal::PackedUInt64Parser(_internal_mutable_region_ids(), ptr, ctx);
+          CHK_(ptr);
+        } else if (static_cast<uint8_t>(tag) == 8) {
+          _internal_add_region_ids(::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr));
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* ListMetadataRequest::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.region.ListMetadataRequest)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // repeated uint64 region_ids = 1;
+  {
+    int byte_size = _impl_._region_ids_cached_byte_size_.load(std::memory_order_relaxed);
+    if (byte_size > 0) {
+      target = stream->WriteUInt64Packed(
+          1, _internal_region_ids(), byte_size, target);
+    }
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.region.ListMetadataRequest)
+  return target;
+}
+
+size_t ListMetadataRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.region.ListMetadataRequest)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated uint64 region_ids = 1;
+  {
+    size_t data_size = ::_pbi::WireFormatLite::
+      UInt64Size(this->_impl_.region_ids_);
+    if (data_size > 0) {
+      total_size += 1 +
+        ::_pbi::WireFormatLite::Int32Size(static_cast<int32_t>(data_size));
+    }
+    int cached_size = ::_pbi::ToCachedSize(data_size);
+    _impl_._region_ids_cached_byte_size_.store(cached_size,
+                                    std::memory_order_relaxed);
+    total_size += data_size;
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ListMetadataRequest::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    ListMetadataRequest::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ListMetadataRequest::GetClassData() const { return &_class_data_; }
+
+
+void ListMetadataRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<ListMetadataRequest*>(&to_msg);
+  auto& from = static_cast<const ListMetadataRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.region.ListMetadataRequest)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_impl_.region_ids_.MergeFrom(from._impl_.region_ids_);
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ListMetadataRequest::CopyFrom(const ListMetadataRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.region.ListMetadataRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool ListMetadataRequest::IsInitialized() const {
+  return true;
+}
+
+void ListMetadataRequest::InternalSwap(ListMetadataRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.region_ids_.InternalSwap(&other->_impl_.region_ids_);
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata ListMetadataRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fregion_2fserver_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fregion_2fserver_2eproto[34]);
+}
+
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace region
 }  // namespace v1
@@ -9461,6 +9788,10 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::region::SyncRequest*
 Arena::CreateMaybeMessage< ::greptime::v1::region::SyncRequest >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::region::SyncRequest >(arena);
 }
+template<> PROTOBUF_NOINLINE ::greptime::v1::region::ListMetadataRequest*
+Arena::CreateMaybeMessage< ::greptime::v1::region::ListMetadataRequest >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::region::ListMetadataRequest >(arena);
+}
 PROTOBUF_NAMESPACE_CLOSE
 
 // @@protoc_insertion_point(global_scope)
diff --git a/c++/greptime/v1/region/server.pb.h b/c++/greptime/v1/region/server.pb.h
index 35c72a7..6eb8fe0 100644
--- a/c++/greptime/v1/region/server.pb.h
+++ b/c++/greptime/v1/region/server.pb.h
@@ -111,6 +111,9 @@ extern InsertRequestDefaultTypeInternal _InsertRequest_default_instance_;
 class InsertRequests;
 struct InsertRequestsDefaultTypeInternal;
 extern InsertRequestsDefaultTypeInternal _InsertRequests_default_instance_;
+class ListMetadataRequest;
+struct ListMetadataRequestDefaultTypeInternal;
+extern ListMetadataRequestDefaultTypeInternal _ListMetadataRequest_default_instance_;
 class MetricManifestInfo;
 struct MetricManifestInfoDefaultTypeInternal;
 extern MetricManifestInfoDefaultTypeInternal _MetricManifestInfo_default_instance_;
@@ -179,6 +182,7 @@ template<> ::greptime::v1::region::DropRequests* Arena::CreateMaybeMessage<::gre
 template<> ::greptime::v1::region::FlushRequest* Arena::CreateMaybeMessage<::greptime::v1::region::FlushRequest>(Arena*);
 template<> ::greptime::v1::region::InsertRequest* Arena::CreateMaybeMessage<::greptime::v1::region::InsertRequest>(Arena*);
 template<> ::greptime::v1::region::InsertRequests* Arena::CreateMaybeMessage<::greptime::v1::region::InsertRequests>(Arena*);
+template<> ::greptime::v1::region::ListMetadataRequest* Arena::CreateMaybeMessage<::greptime::v1::region::ListMetadataRequest>(Arena*);
 template<> ::greptime::v1::region::MetricManifestInfo* Arena::CreateMaybeMessage<::greptime::v1::region::MetricManifestInfo>(Arena*);
 template<> ::greptime::v1::region::MitoManifestInfo* Arena::CreateMaybeMessage<::greptime::v1::region::MitoManifestInfo>(Arena*);
 template<> ::greptime::v1::region::OpenRequest* Arena::CreateMaybeMessage<::greptime::v1::region::OpenRequest>(Arena*);
@@ -487,6 +491,7 @@ class RegionRequest final :
     kAlters = 15,
     kBulkInsert = 16,
     kSync = 17,
+    kListMetadata = 18,
     BODY_NOT_SET = 0,
   };
 
@@ -584,6 +589,7 @@ class RegionRequest final :
     kAltersFieldNumber = 15,
     kBulkInsertFieldNumber = 16,
     kSyncFieldNumber = 17,
+    kListMetadataFieldNumber = 18,
   };
   // .greptime.v1.region.RegionRequestHeader header = 1;
   bool has_header() const;
@@ -873,6 +879,24 @@ class RegionRequest final :
       ::greptime::v1::region::SyncRequest* sync);
   ::greptime::v1::region::SyncRequest* unsafe_arena_release_sync();
 
+  // .greptime.v1.region.ListMetadataRequest list_metadata = 18;
+  bool has_list_metadata() const;
+  private:
+  bool _internal_has_list_metadata() const;
+  public:
+  void clear_list_metadata();
+  const ::greptime::v1::region::ListMetadataRequest& list_metadata() const;
+  PROTOBUF_NODISCARD ::greptime::v1::region::ListMetadataRequest* release_list_metadata();
+  ::greptime::v1::region::ListMetadataRequest* mutable_list_metadata();
+  void set_allocated_list_metadata(::greptime::v1::region::ListMetadataRequest* list_metadata);
+  private:
+  const ::greptime::v1::region::ListMetadataRequest& _internal_list_metadata() const;
+  ::greptime::v1::region::ListMetadataRequest* _internal_mutable_list_metadata();
+  public:
+  void unsafe_arena_set_allocated_list_metadata(
+      ::greptime::v1::region::ListMetadataRequest* list_metadata);
+  ::greptime::v1::region::ListMetadataRequest* unsafe_arena_release_list_metadata();
+
   void clear_body();
   BodyCase body_case() const;
   // @@protoc_insertion_point(class_scope:greptime.v1.region.RegionRequest)
@@ -893,6 +917,7 @@ class RegionRequest final :
   void set_has_alters();
   void set_has_bulk_insert();
   void set_has_sync();
+  void set_has_list_metadata();
 
   inline bool has_body() const;
   inline void clear_has_body();
@@ -920,6 +945,7 @@ class RegionRequest final :
       ::greptime::v1::region::AlterRequests* alters_;
       ::greptime::v1::region::BulkInsertRequest* bulk_insert_;
       ::greptime::v1::region::SyncRequest* sync_;
+      ::greptime::v1::region::ListMetadataRequest* list_metadata_;
     } body_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
     uint32_t _oneof_case_[1];
@@ -1081,6 +1107,7 @@ class RegionResponse final :
 
   enum : int {
     kExtensionsFieldNumber = 3,
+    kMetadataFieldNumber = 4,
     kHeaderFieldNumber = 1,
     kAffectedRowsFieldNumber = 2,
   };
@@ -1101,6 +1128,20 @@ class RegionResponse final :
   ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
       mutable_extensions();
 
+  // bytes metadata = 4;
+  void clear_metadata();
+  const std::string& metadata() const;
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_metadata(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_metadata();
+  PROTOBUF_NODISCARD std::string* release_metadata();
+  void set_allocated_metadata(std::string* metadata);
+  private:
+  const std::string& _internal_metadata() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_metadata(const std::string& value);
+  std::string* _internal_mutable_metadata();
+  public:
+
   // .greptime.v1.ResponseHeader header = 1;
   bool has_header() const;
   private:
@@ -1141,6 +1182,7 @@ class RegionResponse final :
         std::string, std::string,
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_BYTES> extensions_;
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr metadata_;
     ::greptime::v1::ResponseHeader* header_;
     uint64_t affected_rows_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
@@ -5903,6 +5945,168 @@ class SyncRequest final :
   union { Impl_ _impl_; };
   friend struct ::TableStruct_greptime_2fv1_2fregion_2fserver_2eproto;
 };
+// -------------------------------------------------------------------
+
+class ListMetadataRequest final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.region.ListMetadataRequest) */ {
+ public:
+  inline ListMetadataRequest() : ListMetadataRequest(nullptr) {}
+  ~ListMetadataRequest() override;
+  explicit PROTOBUF_CONSTEXPR ListMetadataRequest(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  ListMetadataRequest(const ListMetadataRequest& from);
+  ListMetadataRequest(ListMetadataRequest&& from) noexcept
+    : ListMetadataRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline ListMetadataRequest& operator=(const ListMetadataRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListMetadataRequest& operator=(ListMetadataRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListMetadataRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ListMetadataRequest* internal_default_instance() {
+    return reinterpret_cast<const ListMetadataRequest*>(
+               &_ListMetadataRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    34;
+
+  friend void swap(ListMetadataRequest& a, ListMetadataRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListMetadataRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListMetadataRequest* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListMetadataRequest* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListMetadataRequest>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const ListMetadataRequest& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const ListMetadataRequest& from) {
+    ListMetadataRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ListMetadataRequest* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.region.ListMetadataRequest";
+  }
+  protected:
+  explicit ListMetadataRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kRegionIdsFieldNumber = 1,
+  };
+  // repeated uint64 region_ids = 1;
+  int region_ids_size() const;
+  private:
+  int _internal_region_ids_size() const;
+  public:
+  void clear_region_ids();
+  private:
+  uint64_t _internal_region_ids(int index) const;
+  const ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >&
+      _internal_region_ids() const;
+  void _internal_add_region_ids(uint64_t value);
+  ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >*
+      _internal_mutable_region_ids();
+  public:
+  uint64_t region_ids(int index) const;
+  void set_region_ids(int index, uint64_t value);
+  void add_region_ids(uint64_t value);
+  const ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >&
+      region_ids() const;
+  ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >*
+      mutable_region_ids();
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.region.ListMetadataRequest)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t > region_ids_;
+    mutable std::atomic<int> _region_ids_cached_byte_size_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fregion_2fserver_2eproto;
+};
 // ===================================================================
 
 
@@ -7284,6 +7488,80 @@ inline ::greptime::v1::region::SyncRequest* RegionRequest::mutable_sync() {
   return _msg;
 }
 
+// .greptime.v1.region.ListMetadataRequest list_metadata = 18;
+inline bool RegionRequest::_internal_has_list_metadata() const {
+  return body_case() == kListMetadata;
+}
+inline bool RegionRequest::has_list_metadata() const {
+  return _internal_has_list_metadata();
+}
+inline void RegionRequest::set_has_list_metadata() {
+  _impl_._oneof_case_[0] = kListMetadata;
+}
+inline void RegionRequest::clear_list_metadata() {
+  if (_internal_has_list_metadata()) {
+    if (GetArenaForAllocation() == nullptr) {
+      delete _impl_.body_.list_metadata_;
+    }
+    clear_has_body();
+  }
+}
+inline ::greptime::v1::region::ListMetadataRequest* RegionRequest::release_list_metadata() {
+  // @@protoc_insertion_point(field_release:greptime.v1.region.RegionRequest.list_metadata)
+  if (_internal_has_list_metadata()) {
+    clear_has_body();
+    ::greptime::v1::region::ListMetadataRequest* temp = _impl_.body_.list_metadata_;
+    if (GetArenaForAllocation() != nullptr) {
+      temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.body_.list_metadata_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline const ::greptime::v1::region::ListMetadataRequest& RegionRequest::_internal_list_metadata() const {
+  return _internal_has_list_metadata()
+      ? *_impl_.body_.list_metadata_
+      : reinterpret_cast< ::greptime::v1::region::ListMetadataRequest&>(::greptime::v1::region::_ListMetadataRequest_default_instance_);
+}
+inline const ::greptime::v1::region::ListMetadataRequest& RegionRequest::list_metadata() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.region.RegionRequest.list_metadata)
+  return _internal_list_metadata();
+}
+inline ::greptime::v1::region::ListMetadataRequest* RegionRequest::unsafe_arena_release_list_metadata() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.region.RegionRequest.list_metadata)
+  if (_internal_has_list_metadata()) {
+    clear_has_body();
+    ::greptime::v1::region::ListMetadataRequest* temp = _impl_.body_.list_metadata_;
+    _impl_.body_.list_metadata_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void RegionRequest::unsafe_arena_set_allocated_list_metadata(::greptime::v1::region::ListMetadataRequest* list_metadata) {
+  clear_body();
+  if (list_metadata) {
+    set_has_list_metadata();
+    _impl_.body_.list_metadata_ = list_metadata;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.region.RegionRequest.list_metadata)
+}
+inline ::greptime::v1::region::ListMetadataRequest* RegionRequest::_internal_mutable_list_metadata() {
+  if (!_internal_has_list_metadata()) {
+    clear_body();
+    set_has_list_metadata();
+    _impl_.body_.list_metadata_ = CreateMaybeMessage< ::greptime::v1::region::ListMetadataRequest >(GetArenaForAllocation());
+  }
+  return _impl_.body_.list_metadata_;
+}
+inline ::greptime::v1::region::ListMetadataRequest* RegionRequest::mutable_list_metadata() {
+  ::greptime::v1::region::ListMetadataRequest* _msg = _internal_mutable_list_metadata();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.region.RegionRequest.list_metadata)
+  return _msg;
+}
+
 inline bool RegionRequest::has_body() const {
   return body_case() != BODY_NOT_SET;
 }
@@ -7433,6 +7711,56 @@ RegionResponse::mutable_extensions() {
   return _internal_mutable_extensions();
 }
 
+// bytes metadata = 4;
+inline void RegionResponse::clear_metadata() {
+  _impl_.metadata_.ClearToEmpty();
+}
+inline const std::string& RegionResponse::metadata() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.region.RegionResponse.metadata)
+  return _internal_metadata();
+}
+template <typename ArgT0, typename... ArgT>
+inline PROTOBUF_ALWAYS_INLINE
+void RegionResponse::set_metadata(ArgT0&& arg0, ArgT... args) {
+ 
+ _impl_.metadata_.SetBytes(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.region.RegionResponse.metadata)
+}
+inline std::string* RegionResponse::mutable_metadata() {
+  std::string* _s = _internal_mutable_metadata();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.region.RegionResponse.metadata)
+  return _s;
+}
+inline const std::string& RegionResponse::_internal_metadata() const {
+  return _impl_.metadata_.Get();
+}
+inline void RegionResponse::_internal_set_metadata(const std::string& value) {
+  
+  _impl_.metadata_.Set(value, GetArenaForAllocation());
+}
+inline std::string* RegionResponse::_internal_mutable_metadata() {
+  
+  return _impl_.metadata_.Mutable(GetArenaForAllocation());
+}
+inline std::string* RegionResponse::release_metadata() {
+  // @@protoc_insertion_point(field_release:greptime.v1.region.RegionResponse.metadata)
+  return _impl_.metadata_.Release();
+}
+inline void RegionResponse::set_allocated_metadata(std::string* metadata) {
+  if (metadata != nullptr) {
+    
+  } else {
+    
+  }
+  _impl_.metadata_.SetAllocated(metadata, GetArenaForAllocation());
+#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (_impl_.metadata_.IsDefault()) {
+    _impl_.metadata_.Set("", GetArenaForAllocation());
+  }
+#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.region.RegionResponse.metadata)
+}
+
 // -------------------------------------------------------------------
 
 // InsertRequests
@@ -10132,6 +10460,57 @@ inline void SyncRequest::clear_has_manifest_info() {
 inline SyncRequest::ManifestInfoCase SyncRequest::manifest_info_case() const {
   return SyncRequest::ManifestInfoCase(_impl_._oneof_case_[0]);
 }
+// -------------------------------------------------------------------
+
+// ListMetadataRequest
+
+// repeated uint64 region_ids = 1;
+inline int ListMetadataRequest::_internal_region_ids_size() const {
+  return _impl_.region_ids_.size();
+}
+inline int ListMetadataRequest::region_ids_size() const {
+  return _internal_region_ids_size();
+}
+inline void ListMetadataRequest::clear_region_ids() {
+  _impl_.region_ids_.Clear();
+}
+inline uint64_t ListMetadataRequest::_internal_region_ids(int index) const {
+  return _impl_.region_ids_.Get(index);
+}
+inline uint64_t ListMetadataRequest::region_ids(int index) const {
+  // @@protoc_insertion_point(field_get:greptime.v1.region.ListMetadataRequest.region_ids)
+  return _internal_region_ids(index);
+}
+inline void ListMetadataRequest::set_region_ids(int index, uint64_t value) {
+  _impl_.region_ids_.Set(index, value);
+  // @@protoc_insertion_point(field_set:greptime.v1.region.ListMetadataRequest.region_ids)
+}
+inline void ListMetadataRequest::_internal_add_region_ids(uint64_t value) {
+  _impl_.region_ids_.Add(value);
+}
+inline void ListMetadataRequest::add_region_ids(uint64_t value) {
+  _internal_add_region_ids(value);
+  // @@protoc_insertion_point(field_add:greptime.v1.region.ListMetadataRequest.region_ids)
+}
+inline const ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >&
+ListMetadataRequest::_internal_region_ids() const {
+  return _impl_.region_ids_;
+}
+inline const ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >&
+ListMetadataRequest::region_ids() const {
+  // @@protoc_insertion_point(field_list:greptime.v1.region.ListMetadataRequest.region_ids)
+  return _internal_region_ids();
+}
+inline ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >*
+ListMetadataRequest::_internal_mutable_region_ids() {
+  return &_impl_.region_ids_;
+}
+inline ::PROTOBUF_NAMESPACE_ID::RepeatedField< uint64_t >*
+ListMetadataRequest::mutable_region_ids() {
+  // @@protoc_insertion_point(field_mutable_list:greptime.v1.region.ListMetadataRequest.region_ids)
+  return _internal_mutable_region_ids();
+}
+
 #ifdef __GNUC__
   #pragma GCC diagnostic pop
 #endif  // __GNUC__
@@ -10201,6 +10580,8 @@ inline SyncRequest::ManifestInfoCase SyncRequest::manifest_info_case() const {
 
 // -------------------------------------------------------------------
 
+// -------------------------------------------------------------------
+
 
 // @@protoc_insertion_point(namespace_scope)
 
diff --git a/java/src/main/java/io/greptime/v1/region/Server.java b/java/src/main/java/io/greptime/v1/region/Server.java
index ac9dc7f..4e5d9b5 100644
--- a/java/src/main/java/io/greptime/v1/region/Server.java
+++ b/java/src/main/java/io/greptime/v1/region/Server.java
@@ -1532,6 +1532,21 @@ java.lang.String defaultValue);
      */
     io.greptime.v1.region.Server.SyncRequestOrBuilder getSyncOrBuilder();
 
+    /**
+     * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+     * @return Whether the listMetadata field is set.
+     */
+    boolean hasListMetadata();
+    /**
+     * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+     * @return The listMetadata.
+     */
+    io.greptime.v1.region.Server.ListMetadataRequest getListMetadata();
+    /**
+     * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+     */
+    io.greptime.v1.region.Server.ListMetadataRequestOrBuilder getListMetadataOrBuilder();
+
     public io.greptime.v1.region.Server.RegionRequest.BodyCase getBodyCase();
   }
   /**
@@ -1802,6 +1817,20 @@ java.lang.String defaultValue);
               bodyCase_ = 17;
               break;
             }
+            case 146: {
+              io.greptime.v1.region.Server.ListMetadataRequest.Builder subBuilder = null;
+              if (bodyCase_ == 18) {
+                subBuilder = ((io.greptime.v1.region.Server.ListMetadataRequest) body_).toBuilder();
+              }
+              body_ =
+                  input.readMessage(io.greptime.v1.region.Server.ListMetadataRequest.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom((io.greptime.v1.region.Server.ListMetadataRequest) body_);
+                body_ = subBuilder.buildPartial();
+              }
+              bodyCase_ = 18;
+              break;
+            }
             default: {
               if (!parseUnknownField(
                   input, unknownFields, extensionRegistry, tag)) {
@@ -1856,6 +1885,7 @@ java.lang.String defaultValue);
       ALTERS(15),
       BULK_INSERT(16),
       SYNC(17),
+      LIST_METADATA(18),
       BODY_NOT_SET(0);
       private final int value;
       private BodyCase(int value) {
@@ -1888,6 +1918,7 @@ java.lang.String defaultValue);
           case 15: return ALTERS;
           case 16: return BULK_INSERT;
           case 17: return SYNC;
+          case 18: return LIST_METADATA;
           case 0: return BODY_NOT_SET;
           default: return null;
         }
@@ -2394,6 +2425,37 @@ java.lang.String defaultValue);
       return io.greptime.v1.region.Server.SyncRequest.getDefaultInstance();
     }
 
+    public static final int LIST_METADATA_FIELD_NUMBER = 18;
+    /**
+     * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+     * @return Whether the listMetadata field is set.
+     */
+    @java.lang.Override
+    public boolean hasListMetadata() {
+      return bodyCase_ == 18;
+    }
+    /**
+     * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+     * @return The listMetadata.
+     */
+    @java.lang.Override
+    public io.greptime.v1.region.Server.ListMetadataRequest getListMetadata() {
+      if (bodyCase_ == 18) {
+         return (io.greptime.v1.region.Server.ListMetadataRequest) body_;
+      }
+      return io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+    }
+    /**
+     * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+     */
+    @java.lang.Override
+    public io.greptime.v1.region.Server.ListMetadataRequestOrBuilder getListMetadataOrBuilder() {
+      if (bodyCase_ == 18) {
+         return (io.greptime.v1.region.Server.ListMetadataRequest) body_;
+      }
+      return io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+    }
+
     private byte memoizedIsInitialized = -1;
     @java.lang.Override
     public final boolean isInitialized() {
@@ -2456,6 +2518,9 @@ java.lang.String defaultValue);
       if (bodyCase_ == 17) {
         output.writeMessage(17, (io.greptime.v1.region.Server.SyncRequest) body_);
       }
+      if (bodyCase_ == 18) {
+        output.writeMessage(18, (io.greptime.v1.region.Server.ListMetadataRequest) body_);
+      }
       unknownFields.writeTo(output);
     }
 
@@ -2529,6 +2594,10 @@ java.lang.String defaultValue);
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(17, (io.greptime.v1.region.Server.SyncRequest) body_);
       }
+      if (bodyCase_ == 18) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(18, (io.greptime.v1.region.Server.ListMetadataRequest) body_);
+      }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
       return size;
@@ -2611,6 +2680,10 @@ java.lang.String defaultValue);
           if (!getSync()
               .equals(other.getSync())) return false;
           break;
+        case 18:
+          if (!getListMetadata()
+              .equals(other.getListMetadata())) return false;
+          break;
         case 0:
         default:
       }
@@ -2690,6 +2763,10 @@ java.lang.String defaultValue);
           hash = (37 * hash) + SYNC_FIELD_NUMBER;
           hash = (53 * hash) + getSync().hashCode();
           break;
+        case 18:
+          hash = (37 * hash) + LIST_METADATA_FIELD_NUMBER;
+          hash = (53 * hash) + getListMetadata().hashCode();
+          break;
         case 0:
         default:
       }
@@ -2970,6 +3047,13 @@ java.lang.String defaultValue);
             result.body_ = syncBuilder_.build();
           }
         }
+        if (bodyCase_ == 18) {
+          if (listMetadataBuilder_ == null) {
+            result.body_ = body_;
+          } else {
+            result.body_ = listMetadataBuilder_.build();
+          }
+        }
         result.bodyCase_ = bodyCase_;
         onBuilt();
         return result;
@@ -3083,6 +3167,10 @@ java.lang.String defaultValue);
             mergeSync(other.getSync());
             break;
           }
+          case LIST_METADATA: {
+            mergeListMetadata(other.getListMetadata());
+            break;
+          }
           case BODY_NOT_SET: {
             break;
           }
@@ -5379,6 +5467,148 @@ java.lang.String defaultValue);
         onChanged();;
         return syncBuilder_;
       }
+
+      private com.google.protobuf.SingleFieldBuilderV3<
+          io.greptime.v1.region.Server.ListMetadataRequest, io.greptime.v1.region.Server.ListMetadataRequest.Builder, io.greptime.v1.region.Server.ListMetadataRequestOrBuilder> listMetadataBuilder_;
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       * @return Whether the listMetadata field is set.
+       */
+      @java.lang.Override
+      public boolean hasListMetadata() {
+        return bodyCase_ == 18;
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       * @return The listMetadata.
+       */
+      @java.lang.Override
+      public io.greptime.v1.region.Server.ListMetadataRequest getListMetadata() {
+        if (listMetadataBuilder_ == null) {
+          if (bodyCase_ == 18) {
+            return (io.greptime.v1.region.Server.ListMetadataRequest) body_;
+          }
+          return io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+        } else {
+          if (bodyCase_ == 18) {
+            return listMetadataBuilder_.getMessage();
+          }
+          return io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+        }
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      public Builder setListMetadata(io.greptime.v1.region.Server.ListMetadataRequest value) {
+        if (listMetadataBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          body_ = value;
+          onChanged();
+        } else {
+          listMetadataBuilder_.setMessage(value);
+        }
+        bodyCase_ = 18;
+        return this;
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      public Builder setListMetadata(
+          io.greptime.v1.region.Server.ListMetadataRequest.Builder builderForValue) {
+        if (listMetadataBuilder_ == null) {
+          body_ = builderForValue.build();
+          onChanged();
+        } else {
+          listMetadataBuilder_.setMessage(builderForValue.build());
+        }
+        bodyCase_ = 18;
+        return this;
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      public Builder mergeListMetadata(io.greptime.v1.region.Server.ListMetadataRequest value) {
+        if (listMetadataBuilder_ == null) {
+          if (bodyCase_ == 18 &&
+              body_ != io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance()) {
+            body_ = io.greptime.v1.region.Server.ListMetadataRequest.newBuilder((io.greptime.v1.region.Server.ListMetadataRequest) body_)
+                .mergeFrom(value).buildPartial();
+          } else {
+            body_ = value;
+          }
+          onChanged();
+        } else {
+          if (bodyCase_ == 18) {
+            listMetadataBuilder_.mergeFrom(value);
+          } else {
+            listMetadataBuilder_.setMessage(value);
+          }
+        }
+        bodyCase_ = 18;
+        return this;
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      public Builder clearListMetadata() {
+        if (listMetadataBuilder_ == null) {
+          if (bodyCase_ == 18) {
+            bodyCase_ = 0;
+            body_ = null;
+            onChanged();
+          }
+        } else {
+          if (bodyCase_ == 18) {
+            bodyCase_ = 0;
+            body_ = null;
+          }
+          listMetadataBuilder_.clear();
+        }
+        return this;
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      public io.greptime.v1.region.Server.ListMetadataRequest.Builder getListMetadataBuilder() {
+        return getListMetadataFieldBuilder().getBuilder();
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      @java.lang.Override
+      public io.greptime.v1.region.Server.ListMetadataRequestOrBuilder getListMetadataOrBuilder() {
+        if ((bodyCase_ == 18) && (listMetadataBuilder_ != null)) {
+          return listMetadataBuilder_.getMessageOrBuilder();
+        } else {
+          if (bodyCase_ == 18) {
+            return (io.greptime.v1.region.Server.ListMetadataRequest) body_;
+          }
+          return io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+        }
+      }
+      /**
+       * <code>.greptime.v1.region.ListMetadataRequest list_metadata = 18;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilderV3<
+          io.greptime.v1.region.Server.ListMetadataRequest, io.greptime.v1.region.Server.ListMetadataRequest.Builder, io.greptime.v1.region.Server.ListMetadataRequestOrBuilder> 
+          getListMetadataFieldBuilder() {
+        if (listMetadataBuilder_ == null) {
+          if (!(bodyCase_ == 18)) {
+            body_ = io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+          }
+          listMetadataBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.region.Server.ListMetadataRequest, io.greptime.v1.region.Server.ListMetadataRequest.Builder, io.greptime.v1.region.Server.ListMetadataRequestOrBuilder>(
+                  (io.greptime.v1.region.Server.ListMetadataRequest) body_,
+                  getParentForChildren(),
+                  isClean());
+          body_ = null;
+        }
+        bodyCase_ = 18;
+        onChanged();;
+        return listMetadataBuilder_;
+      }
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -5492,6 +5722,19 @@ com.google.protobuf.ByteString defaultValue);
 
     com.google.protobuf.ByteString getExtensionsOrThrow(
         java.lang.String key);
+
+    /**
+     * <pre>
+     * Response for ListMetadataRequest.
+     * It is a json array of region metadatas.
+     * The length of the array is equal to the number of regions in the list request.
+     * The element is null if the region is not found.
+     * </pre>
+     *
+     * <code>bytes metadata = 4;</code>
+     * @return The metadata.
+     */
+    com.google.protobuf.ByteString getMetadata();
   }
   /**
    * Protobuf type {@code greptime.v1.region.RegionResponse}
@@ -5506,6 +5749,7 @@ com.google.protobuf.ByteString defaultValue);
       super(builder);
     }
     private RegionResponse() {
+      metadata_ = com.google.protobuf.ByteString.EMPTY;
     }
 
     @java.lang.Override
@@ -5570,6 +5814,11 @@ com.google.protobuf.ByteString defaultValue);
                   extensions__.getKey(), extensions__.getValue());
               break;
             }
+            case 34: {
+
+              metadata_ = input.readBytes();
+              break;
+            }
             default: {
               if (!parseUnknownField(
                   input, unknownFields, extensionRegistry, tag)) {
@@ -5734,6 +5983,24 @@ com.google.protobuf.ByteString defaultValue);
       return map.get(key);
     }
 
+    public static final int METADATA_FIELD_NUMBER = 4;
+    private com.google.protobuf.ByteString metadata_;
+    /**
+     * <pre>
+     * Response for ListMetadataRequest.
+     * It is a json array of region metadatas.
+     * The length of the array is equal to the number of regions in the list request.
+     * The element is null if the region is not found.
+     * </pre>
+     *
+     * <code>bytes metadata = 4;</code>
+     * @return The metadata.
+     */
+    @java.lang.Override
+    public com.google.protobuf.ByteString getMetadata() {
+      return metadata_;
+    }
+
     private byte memoizedIsInitialized = -1;
     @java.lang.Override
     public final boolean isInitialized() {
@@ -5760,6 +6027,9 @@ com.google.protobuf.ByteString defaultValue);
           internalGetExtensions(),
           ExtensionsDefaultEntryHolder.defaultEntry,
           3);
+      if (!metadata_.isEmpty()) {
+        output.writeBytes(4, metadata_);
+      }
       unknownFields.writeTo(output);
     }
 
@@ -5787,6 +6057,10 @@ com.google.protobuf.ByteString defaultValue);
         size += com.google.protobuf.CodedOutputStream
             .computeMessageSize(3, extensions__);
       }
+      if (!metadata_.isEmpty()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(4, metadata_);
+      }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
       return size;
@@ -5811,6 +6085,8 @@ com.google.protobuf.ByteString defaultValue);
           != other.getAffectedRows()) return false;
       if (!internalGetExtensions().equals(
           other.internalGetExtensions())) return false;
+      if (!getMetadata()
+          .equals(other.getMetadata())) return false;
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
     }
@@ -5833,6 +6109,8 @@ com.google.protobuf.ByteString defaultValue);
         hash = (37 * hash) + EXTENSIONS_FIELD_NUMBER;
         hash = (53 * hash) + internalGetExtensions().hashCode();
       }
+      hash = (37 * hash) + METADATA_FIELD_NUMBER;
+      hash = (53 * hash) + getMetadata().hashCode();
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -5997,6 +6275,8 @@ com.google.protobuf.ByteString defaultValue);
         affectedRows_ = 0L;
 
         internalGetMutableExtensions().clear();
+        metadata_ = com.google.protobuf.ByteString.EMPTY;
+
         return this;
       }
 
@@ -6032,6 +6312,7 @@ com.google.protobuf.ByteString defaultValue);
         result.affectedRows_ = affectedRows_;
         result.extensions_ = internalGetExtensions();
         result.extensions_.makeImmutable();
+        result.metadata_ = metadata_;
         onBuilt();
         return result;
       }
@@ -6088,6 +6369,9 @@ com.google.protobuf.ByteString defaultValue);
         }
         internalGetMutableExtensions().mergeFrom(
             other.internalGetExtensions());
+        if (other.getMetadata() != com.google.protobuf.ByteString.EMPTY) {
+          setMetadata(other.getMetadata());
+        }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
         return this;
@@ -6398,6 +6682,61 @@ com.google.protobuf.ByteString defaultValue);
             .putAll(values);
         return this;
       }
+
+      private com.google.protobuf.ByteString metadata_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <pre>
+       * Response for ListMetadataRequest.
+       * It is a json array of region metadatas.
+       * The length of the array is equal to the number of regions in the list request.
+       * The element is null if the region is not found.
+       * </pre>
+       *
+       * <code>bytes metadata = 4;</code>
+       * @return The metadata.
+       */
+      @java.lang.Override
+      public com.google.protobuf.ByteString getMetadata() {
+        return metadata_;
+      }
+      /**
+       * <pre>
+       * Response for ListMetadataRequest.
+       * It is a json array of region metadatas.
+       * The length of the array is equal to the number of regions in the list request.
+       * The element is null if the region is not found.
+       * </pre>
+       *
+       * <code>bytes metadata = 4;</code>
+       * @param value The metadata to set.
+       * @return This builder for chaining.
+       */
+      public Builder setMetadata(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        metadata_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * Response for ListMetadataRequest.
+       * It is a json array of region metadatas.
+       * The length of the array is equal to the number of regions in the list request.
+       * The element is null if the region is not found.
+       * </pre>
+       *
+       * <code>bytes metadata = 4;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearMetadata() {
+        
+        metadata_ = getDefaultInstance().getMetadata();
+        onChanged();
+        return this;
+      }
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -28955,6 +29294,631 @@ java.lang.String defaultValue);
 
   }
 
+  public interface ListMetadataRequestOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.region.ListMetadataRequest)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>repeated uint64 region_ids = 1;</code>
+     * @return A list containing the regionIds.
+     */
+    java.util.List<java.lang.Long> getRegionIdsList();
+    /**
+     * <code>repeated uint64 region_ids = 1;</code>
+     * @return The count of regionIds.
+     */
+    int getRegionIdsCount();
+    /**
+     * <code>repeated uint64 region_ids = 1;</code>
+     * @param index The index of the element to return.
+     * @return The regionIds at the given index.
+     */
+    long getRegionIds(int index);
+  }
+  /**
+   * <pre>
+   * Get region metadatas of a list of regions.
+   * </pre>
+   *
+   * Protobuf type {@code greptime.v1.region.ListMetadataRequest}
+   */
+  public static final class ListMetadataRequest extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:greptime.v1.region.ListMetadataRequest)
+      ListMetadataRequestOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use ListMetadataRequest.newBuilder() to construct.
+    private ListMetadataRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private ListMetadataRequest() {
+      regionIds_ = emptyLongList();
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new ListMetadataRequest();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private ListMetadataRequest(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+              if (!((mutable_bitField0_ & 0x00000001) != 0)) {
+                regionIds_ = newLongList();
+                mutable_bitField0_ |= 0x00000001;
+              }
+              regionIds_.addLong(input.readUInt64());
+              break;
+            }
+            case 10: {
+              int length = input.readRawVarint32();
+              int limit = input.pushLimit(length);
+              if (!((mutable_bitField0_ & 0x00000001) != 0) && input.getBytesUntilLimit() > 0) {
+                regionIds_ = newLongList();
+                mutable_bitField0_ |= 0x00000001;
+              }
+              while (input.getBytesUntilLimit() > 0) {
+                regionIds_.addLong(input.readUInt64());
+              }
+              input.popLimit(limit);
+              break;
+            }
+            default: {
+              if (!parseUnknownField(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        if (((mutable_bitField0_ & 0x00000001) != 0)) {
+          regionIds_.makeImmutable(); // C
+        }
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ListMetadataRequest_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ListMetadataRequest_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              io.greptime.v1.region.Server.ListMetadataRequest.class, io.greptime.v1.region.Server.ListMetadataRequest.Builder.class);
+    }
+
+    public static final int REGION_IDS_FIELD_NUMBER = 1;
+    private com.google.protobuf.Internal.LongList regionIds_;
+    /**
+     * <code>repeated uint64 region_ids = 1;</code>
+     * @return A list containing the regionIds.
+     */
+    @java.lang.Override
+    public java.util.List<java.lang.Long>
+        getRegionIdsList() {
+      return regionIds_;
+    }
+    /**
+     * <code>repeated uint64 region_ids = 1;</code>
+     * @return The count of regionIds.
+     */
+    public int getRegionIdsCount() {
+      return regionIds_.size();
+    }
+    /**
+     * <code>repeated uint64 region_ids = 1;</code>
+     * @param index The index of the element to return.
+     * @return The regionIds at the given index.
+     */
+    public long getRegionIds(int index) {
+      return regionIds_.getLong(index);
+    }
+    private int regionIdsMemoizedSerializedSize = -1;
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      getSerializedSize();
+      if (getRegionIdsList().size() > 0) {
+        output.writeUInt32NoTag(10);
+        output.writeUInt32NoTag(regionIdsMemoizedSerializedSize);
+      }
+      for (int i = 0; i < regionIds_.size(); i++) {
+        output.writeUInt64NoTag(regionIds_.getLong(i));
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      {
+        int dataSize = 0;
+        for (int i = 0; i < regionIds_.size(); i++) {
+          dataSize += com.google.protobuf.CodedOutputStream
+            .computeUInt64SizeNoTag(regionIds_.getLong(i));
+        }
+        size += dataSize;
+        if (!getRegionIdsList().isEmpty()) {
+          size += 1;
+          size += com.google.protobuf.CodedOutputStream
+              .computeInt32SizeNoTag(dataSize);
+        }
+        regionIdsMemoizedSerializedSize = dataSize;
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof io.greptime.v1.region.Server.ListMetadataRequest)) {
+        return super.equals(obj);
+      }
+      io.greptime.v1.region.Server.ListMetadataRequest other = (io.greptime.v1.region.Server.ListMetadataRequest) obj;
+
+      if (!getRegionIdsList()
+          .equals(other.getRegionIdsList())) return false;
+      if (!unknownFields.equals(other.unknownFields)) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      if (getRegionIdsCount() > 0) {
+        hash = (37 * hash) + REGION_IDS_FIELD_NUMBER;
+        hash = (53 * hash) + getRegionIdsList().hashCode();
+      }
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static io.greptime.v1.region.Server.ListMetadataRequest parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(io.greptime.v1.region.Server.ListMetadataRequest prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * Get region metadatas of a list of regions.
+     * </pre>
+     *
+     * Protobuf type {@code greptime.v1.region.ListMetadataRequest}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:greptime.v1.region.ListMetadataRequest)
+        io.greptime.v1.region.Server.ListMetadataRequestOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ListMetadataRequest_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ListMetadataRequest_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                io.greptime.v1.region.Server.ListMetadataRequest.class, io.greptime.v1.region.Server.ListMetadataRequest.Builder.class);
+      }
+
+      // Construct using io.greptime.v1.region.Server.ListMetadataRequest.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+        }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        regionIds_ = emptyLongList();
+        bitField0_ = (bitField0_ & ~0x00000001);
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return io.greptime.v1.region.Server.internal_static_greptime_v1_region_ListMetadataRequest_descriptor;
+      }
+
+      @java.lang.Override
+      public io.greptime.v1.region.Server.ListMetadataRequest getDefaultInstanceForType() {
+        return io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public io.greptime.v1.region.Server.ListMetadataRequest build() {
+        io.greptime.v1.region.Server.ListMetadataRequest result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public io.greptime.v1.region.Server.ListMetadataRequest buildPartial() {
+        io.greptime.v1.region.Server.ListMetadataRequest result = new io.greptime.v1.region.Server.ListMetadataRequest(this);
+        int from_bitField0_ = bitField0_;
+        if (((bitField0_ & 0x00000001) != 0)) {
+          regionIds_.makeImmutable();
+          bitField0_ = (bitField0_ & ~0x00000001);
+        }
+        result.regionIds_ = regionIds_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof io.greptime.v1.region.Server.ListMetadataRequest) {
+          return mergeFrom((io.greptime.v1.region.Server.ListMetadataRequest)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(io.greptime.v1.region.Server.ListMetadataRequest other) {
+        if (other == io.greptime.v1.region.Server.ListMetadataRequest.getDefaultInstance()) return this;
+        if (!other.regionIds_.isEmpty()) {
+          if (regionIds_.isEmpty()) {
+            regionIds_ = other.regionIds_;
+            bitField0_ = (bitField0_ & ~0x00000001);
+          } else {
+            ensureRegionIdsIsMutable();
+            regionIds_.addAll(other.regionIds_);
+          }
+          onChanged();
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        io.greptime.v1.region.Server.ListMetadataRequest parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (io.greptime.v1.region.Server.ListMetadataRequest) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+      private int bitField0_;
+
+      private com.google.protobuf.Internal.LongList regionIds_ = emptyLongList();
+      private void ensureRegionIdsIsMutable() {
+        if (!((bitField0_ & 0x00000001) != 0)) {
+          regionIds_ = mutableCopy(regionIds_);
+          bitField0_ |= 0x00000001;
+         }
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @return A list containing the regionIds.
+       */
+      public java.util.List<java.lang.Long>
+          getRegionIdsList() {
+        return ((bitField0_ & 0x00000001) != 0) ?
+                 java.util.Collections.unmodifiableList(regionIds_) : regionIds_;
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @return The count of regionIds.
+       */
+      public int getRegionIdsCount() {
+        return regionIds_.size();
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @param index The index of the element to return.
+       * @return The regionIds at the given index.
+       */
+      public long getRegionIds(int index) {
+        return regionIds_.getLong(index);
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @param index The index to set the value at.
+       * @param value The regionIds to set.
+       * @return This builder for chaining.
+       */
+      public Builder setRegionIds(
+          int index, long value) {
+        ensureRegionIdsIsMutable();
+        regionIds_.setLong(index, value);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @param value The regionIds to add.
+       * @return This builder for chaining.
+       */
+      public Builder addRegionIds(long value) {
+        ensureRegionIdsIsMutable();
+        regionIds_.addLong(value);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @param values The regionIds to add.
+       * @return This builder for chaining.
+       */
+      public Builder addAllRegionIds(
+          java.lang.Iterable<? extends java.lang.Long> values) {
+        ensureRegionIdsIsMutable();
+        com.google.protobuf.AbstractMessageLite.Builder.addAll(
+            values, regionIds_);
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>repeated uint64 region_ids = 1;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearRegionIds() {
+        regionIds_ = emptyLongList();
+        bitField0_ = (bitField0_ & ~0x00000001);
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:greptime.v1.region.ListMetadataRequest)
+    }
+
+    // @@protoc_insertion_point(class_scope:greptime.v1.region.ListMetadataRequest)
+    private static final io.greptime.v1.region.Server.ListMetadataRequest DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new io.greptime.v1.region.Server.ListMetadataRequest();
+    }
+
+    public static io.greptime.v1.region.Server.ListMetadataRequest getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<ListMetadataRequest>
+        PARSER = new com.google.protobuf.AbstractParser<ListMetadataRequest>() {
+      @java.lang.Override
+      public ListMetadataRequest parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new ListMetadataRequest(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<ListMetadataRequest> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<ListMetadataRequest> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public io.greptime.v1.region.Server.ListMetadataRequest getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_region_RegionRequestHeader_descriptor;
   private static final 
@@ -29125,6 +30089,11 @@ java.lang.String defaultValue);
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_region_SyncRequest_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_greptime_v1_region_ListMetadataRequest_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_greptime_v1_region_ListMetadataRequest_fieldAccessorTable;
 
   public static com.google.protobuf.Descriptors.FileDescriptor
       getDescriptor() {
@@ -29142,7 +30111,7 @@ java.lang.String defaultValue);
       "onRequestHeader.TracingContextEntry\022\016\n\006d" +
       "bname\030\003 \001(\t\0220\n\rquery_context\030\006 \001(\0132\031.gre" +
       "ptime.v1.QueryContext\0325\n\023TracingContextE" +
-      "ntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\354\006\n" +
+      "ntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\256\007\n" +
       "\rRegionRequest\0227\n\006header\030\001 \001(\0132\'.greptim" +
       "e.v1.region.RegionRequestHeader\0225\n\007inser" +
       "ts\030\003 \001(\0132\".greptime.v1.region.InsertRequ" +
@@ -29164,85 +30133,88 @@ java.lang.String defaultValue);
       "!.greptime.v1.region.AlterRequestsH\000\022<\n\013" +
       "bulk_insert\030\020 \001(\0132%.greptime.v1.region.B" +
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-      "\014:\0028\001\"E\n\016InsertRequests\0223\n\010requests\030\001 \003(" +
-      "\0132!.greptime.v1.region.InsertRequest\"E\n\016" +
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-      "ime.v1.region.DeleteRequest\"C\n\rInsertReq" +
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-      "greptime.v1.Rows\"C\n\rDeleteRequest\022\021\n\treg" +
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-      ".Rows\"h\n\014QueryRequest\0227\n\006header\030\001 \001(\0132\'." +
-      "greptime.v1.region.RegionRequestHeader\022\021" +
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-      "gionColumnDef\022\023\n\013primary_key\030\004 \003(\r\022\014\n\004pa" +
-      "th\030\005 \001(\t\022?\n\007options\030\006 \003(\0132..greptime.v1." +
-      "region.CreateRequest.OptionsEntry\032.\n\014Opt" +
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-      "\n\005value\030\002 \001(\t:\0028\001\"!\n\014CloseRequest\022\021\n\treg" +
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-      "shRequest\022\021\n\tregion_id\030\001 \001(\004\"\t\n\007Regular\"" +
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-      "\231\001\n\016CompactRequest\022\021\n\tregion_id\030\001 \001(\004\022.\n" +
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-      "\006\n\004body\"1\n\020MitoManifestInfo\022\035\n\025data_mani" +
-      "fest_version\030\001 \001(\004\"V\n\022MetricManifestInfo" +
-      "\022\035\n\025data_manifest_version\030\001 \001(\004\022!\n\031metad" +
-      "ata_manifest_version\030\002 \001(\004\"\275\001\n\013SyncReque" +
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-      "\000B\017\n\rmanifest_info2Y\n\006Region\022O\n\006Handle\022!" +
-      ".greptime.v1.region.RegionRequest\032\".grep" +
-      "time.v1.region.RegionResponseB]\n\025io.grep" +
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-      "imeTeam/greptime-proto/go/greptime/v1/re" +
-      "gionb\006proto3"
+      "ime.v1.region.SyncRequestH\000\022@\n\rlist_meta" +
+      "data\030\022 \001(\0132\'.greptime.v1.region.ListMeta" +
+      "dataRequestH\000B\006\n\004body\"\341\001\n\016RegionResponse" +
+      "\022+\n\006header\030\001 \001(\0132\033.greptime.v1.ResponseH" +
+      "eader\022\025\n\raffected_rows\030\002 \001(\004\022F\n\nextensio" +
+      "ns\030\003 \003(\01322.greptime.v1.region.RegionResp" +
+      "onse.ExtensionsEntry\022\020\n\010metadata\030\004 \001(\014\0321" +
+      "\n\017ExtensionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030" +
+      "\002 \001(\014:\0028\001\"E\n\016InsertRequests\0223\n\010requests\030" +
+      "\001 \003(\0132!.greptime.v1.region.InsertRequest" +
+      "\"E\n\016DeleteRequests\0223\n\010requests\030\001 \003(\0132!.g" +
+      "reptime.v1.region.DeleteRequest\"C\n\rInser" +
+      "tRequest\022\021\n\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(" +
+      "\0132\021.greptime.v1.Rows\"C\n\rDeleteRequest\022\021\n" +
+      "\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(\0132\021.greptim" +
+      "e.v1.Rows\"h\n\014QueryRequest\0227\n\006header\030\001 \001(" +
+      "\0132\'.greptime.v1.region.RegionRequestHead" +
+      "er\022\021\n\tregion_id\030\002 \001(\004\022\014\n\004plan\030\003 \001(\014\"E\n\016C" +
+      "reateRequests\0223\n\010requests\030\001 \003(\0132!.grepti" +
+      "me.v1.region.CreateRequest\"\200\002\n\rCreateReq" +
+      "uest\022\021\n\tregion_id\030\001 \001(\004\022\016\n\006engine\030\002 \001(\t\022" +
+      "8\n\013column_defs\030\003 \003(\0132#.greptime.v1.regio" +
+      "n.RegionColumnDef\022\023\n\013primary_key\030\004 \003(\r\022\014" +
+      "\n\004path\030\005 \001(\t\022?\n\007options\030\006 \003(\0132..greptime" +
+      ".v1.region.CreateRequest.OptionsEntry\032.\n" +
+      "\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(" +
+      "\t:\0028\001\"A\n\014DropRequests\0221\n\010requests\030\001 \003(\0132" +
+      "\037.greptime.v1.region.DropRequest\"3\n\013Drop" +
+      "Request\022\021\n\tregion_id\030\001 \001(\004\022\021\n\tfast_path\030" +
+      "\002 \001(\010\"\255\001\n\013OpenRequest\022\021\n\tregion_id\030\001 \001(\004" +
+      "\022\016\n\006engine\030\002 \001(\t\022\014\n\004path\030\003 \001(\t\022=\n\007option" +
+      "s\030\004 \003(\0132,.greptime.v1.region.OpenRequest" +
+      ".OptionsEntry\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001" +
+      "(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"!\n\014CloseRequest\022\021\n" +
+      "\tregion_id\030\001 \001(\004\"C\n\rAlterRequests\0222\n\010req" +
+      "uests\030\001 \003(\0132 .greptime.v1.region.AlterRe" +
+      "quest\"\372\003\n\014AlterRequest\022\021\n\tregion_id\030\001 \001(" +
+      "\004\0225\n\013add_columns\030\002 \001(\0132\036.greptime.v1.reg" +
+      "ion.AddColumnsH\000\0227\n\014drop_columns\030\003 \001(\0132\037" +
+      ".greptime.v1.region.DropColumnsH\000\022=\n\023mod" +
+      "ify_column_types\030\005 \001(\0132\036.greptime.v1.Mod" +
+      "ifyColumnTypesH\000\0229\n\021set_table_options\030\006 " +
+      "\001(\0132\034.greptime.v1.SetTableOptionsH\000\022=\n\023u" +
+      "nset_table_options\030\t \001(\0132\036.greptime.v1.U" +
+      "nsetTableOptionsH\000\022*\n\tset_index\030\n \001(\0132\025." +
+      "greptime.v1.SetIndexH\000\022.\n\013unset_index\030\013 " +
+      "\001(\0132\027.greptime.v1.UnsetIndexH\000\0222\n\rdrop_d" +
+      "efaults\030\014 \001(\0132\031.greptime.v1.DropDefaults" +
+      "H\000\022\026\n\016schema_version\030\004 \001(\004B\006\n\004kind\"@\n\nAd" +
+      "dColumns\0222\n\013add_columns\030\001 \003(\0132\035.greptime" +
+      ".v1.region.AddColumn\"C\n\013DropColumns\0224\n\014d" +
+      "rop_columns\030\001 \003(\0132\036.greptime.v1.region.D" +
+      "ropColumn\"v\n\tAddColumn\0227\n\ncolumn_def\030\001 \001" +
+      "(\0132#.greptime.v1.region.RegionColumnDef\022" +
+      "0\n\010location\030\003 \001(\0132\036.greptime.v1.AddColum" +
+      "nLocation\"\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"!\n" +
+      "\014FlushRequest\022\021\n\tregion_id\030\001 \001(\004\"\t\n\007Regu" +
+      "lar\"&\n\014StrictWindow\022\026\n\016window_seconds\030\001 " +
+      "\001(\003\"\231\001\n\016CompactRequest\022\021\n\tregion_id\030\001 \001(" +
+      "\004\022.\n\007regular\030\002 \001(\0132\033.greptime.v1.region." +
+      "RegularH\000\0229\n\rstrict_window\030\003 \001(\0132 .grept" +
+      "ime.v1.region.StrictWindowH\000B\t\n\007options\"" +
+      "$\n\017TruncateRequest\022\021\n\tregion_id\030\001 \001(\004\"P\n" +
+      "\017RegionColumnDef\022*\n\ncolumn_def\030\001 \001(\0132\026.g" +
+      "reptime.v1.ColumnDef\022\021\n\tcolumn_id\030\002 \001(\r\"" +
+      "Z\n\021BulkInsertRequest\022\021\n\tregion_id\030\001 \001(\004\022" +
+      "*\n\tarrow_ipc\030\002 \001(\0132\025.greptime.v1.ArrowIp" +
+      "cH\000B\006\n\004body\"1\n\020MitoManifestInfo\022\035\n\025data_" +
+      "manifest_version\030\001 \001(\004\"V\n\022MetricManifest" +
+      "Info\022\035\n\025data_manifest_version\030\001 \001(\004\022!\n\031m" +
+      "etadata_manifest_version\030\002 \001(\004\"\275\001\n\013SyncR" +
+      "equest\022\021\n\tregion_id\030\001 \001(\004\022B\n\022mito_manife" +
+      "st_info\030\002 \001(\0132$.greptime.v1.region.MitoM" +
+      "anifestInfoH\000\022F\n\024metric_manifest_info\030\003 " +
+      "\001(\0132&.greptime.v1.region.MetricManifestI" +
+      "nfoH\000B\017\n\rmanifest_info\")\n\023ListMetadataRe" +
+      "quest\022\022\n\nregion_ids\030\001 \003(\0042Y\n\006Region\022O\n\006H" +
+      "andle\022!.greptime.v1.region.RegionRequest" +
+      "\032\".greptime.v1.region.RegionResponseB]\n\025" +
+      "io.greptime.v1.regionB\006ServerZ<github.co" +
+      "m/GreptimeTeam/greptime-proto/go/greptim" +
+      "e/v1/regionb\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -29268,13 +30240,13 @@ java.lang.String defaultValue);
     internal_static_greptime_v1_region_RegionRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_RegionRequest_descriptor,
-        new java.lang.String[] { "Header", "Inserts", "Deletes", "Create", "Drop", "Open", "Close", "Alter", "Flush", "Compact", "Truncate", "Creates", "Drops", "Alters", "BulkInsert", "Sync", "Body", });
+        new java.lang.String[] { "Header", "Inserts", "Deletes", "Create", "Drop", "Open", "Close", "Alter", "Flush", "Compact", "Truncate", "Creates", "Drops", "Alters", "BulkInsert", "Sync", "ListMetadata", "Body", });
     internal_static_greptime_v1_region_RegionResponse_descriptor =
       getDescriptor().getMessageTypes().get(2);
     internal_static_greptime_v1_region_RegionResponse_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_RegionResponse_descriptor,
-        new java.lang.String[] { "Header", "AffectedRows", "Extensions", });
+        new java.lang.String[] { "Header", "AffectedRows", "Extensions", "Metadata", });
     internal_static_greptime_v1_region_RegionResponse_ExtensionsEntry_descriptor =
       internal_static_greptime_v1_region_RegionResponse_descriptor.getNestedTypes().get(0);
     internal_static_greptime_v1_region_RegionResponse_ExtensionsEntry_fieldAccessorTable = new
@@ -29455,6 +30427,12 @@ java.lang.String defaultValue);
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_region_SyncRequest_descriptor,
         new java.lang.String[] { "RegionId", "MitoManifestInfo", "MetricManifestInfo", "ManifestInfo", });
+    internal_static_greptime_v1_region_ListMetadataRequest_descriptor =
+      getDescriptor().getMessageTypes().get(30);
+    internal_static_greptime_v1_region_ListMetadataRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_greptime_v1_region_ListMetadataRequest_descriptor,
+        new java.lang.String[] { "RegionIds", });
     io.greptime.v1.Common.getDescriptor();
     io.greptime.v1.RowData.getDescriptor();
     io.greptime.v1.Ddl.getDescriptor();
diff --git a/proto/greptime/v1/region/server.proto b/proto/greptime/v1/region/server.proto
index 1f41282..1fa5c3e 100644
--- a/proto/greptime/v1/region/server.proto
+++ b/proto/greptime/v1/region/server.proto
@@ -55,6 +55,7 @@ message RegionRequest {
     AlterRequests alters = 15;
     BulkInsertRequest bulk_insert = 16;
     SyncRequest sync = 17;
+    ListMetadataRequest list_metadata = 18;
   }
 }
 
@@ -62,6 +63,11 @@ message RegionResponse {
   ResponseHeader header = 1;
   uint64 affected_rows = 2;
   map<string, bytes> extensions = 3;
+  // Response for ListMetadataRequest.
+  // It is a json array of region metadatas.
+  // The length of the array is equal to the number of regions in the list request.
+  // The element is null if the region is not found.
+  bytes metadata = 4;
 }
 
 message InsertRequests { repeated InsertRequest requests = 1; }
@@ -213,3 +219,8 @@ message SyncRequest {
     MetricManifestInfo metric_manifest_info = 3;
   }
 }
+
+// Get region metadatas of a list of regions.
+message ListMetadataRequest {
+  repeated uint64 region_ids = 1;
+}