diff --git a/c++/greptime/v1/meta/heartbeat.pb.cc b/c++/greptime/v1/meta/heartbeat.pb.cc
index 16a4e66..2b7921a 100644
--- a/c++/greptime/v1/meta/heartbeat.pb.cc
+++ b/c++/greptime/v1/meta/heartbeat.pb.cc
@@ -23,10 +23,22 @@ namespace _pbi = _pb::internal;
 namespace greptime {
 namespace v1 {
 namespace meta {
+PROTOBUF_CONSTEXPR HeartbeatRequest_ExtensionsEntry_DoNotUse::HeartbeatRequest_ExtensionsEntry_DoNotUse(
+    ::_pbi::ConstantInitialized) {}
+struct HeartbeatRequest_ExtensionsEntry_DoNotUseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR HeartbeatRequest_ExtensionsEntry_DoNotUseDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~HeartbeatRequest_ExtensionsEntry_DoNotUseDefaultTypeInternal() {}
+  union {
+    HeartbeatRequest_ExtensionsEntry_DoNotUse _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 HeartbeatRequest_ExtensionsEntry_DoNotUseDefaultTypeInternal _HeartbeatRequest_ExtensionsEntry_DoNotUse_default_instance_;
 PROTOBUF_CONSTEXPR HeartbeatRequest::HeartbeatRequest(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.region_stats_)*/{}
   , /*decltype(_impl_.topic_stats_)*/{}
+  , /*decltype(_impl_.extensions_)*/{::_pbi::ConstantInitialized()}
   , /*decltype(_impl_.header_)*/nullptr
   , /*decltype(_impl_.peer_)*/nullptr
   , /*decltype(_impl_.report_interval_)*/nullptr
@@ -295,11 +307,21 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORIT
 }  // namespace meta
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[18];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[19];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fmeta_2fheartbeat_2eproto[1];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fmeta_2fheartbeat_2eproto = nullptr;
 
 const uint32_t TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse, _has_bits_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse, key_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse, value_),
+  0,
+  1,
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -319,6 +341,7 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets[] P
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest, _impl_.topic_stats_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest, _impl_.extensions_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatRequest, _impl_.node_workloads_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DatanodeWorkloads, _internal_metadata_),
@@ -481,27 +504,29 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets[] P
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::MailboxMessage, _impl_.payload_),
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
-  { 0, -1, -1, sizeof(::greptime::v1::meta::HeartbeatRequest)},
-  { 20, -1, -1, sizeof(::greptime::v1::meta::DatanodeWorkloads)},
-  { 27, -1, -1, sizeof(::greptime::v1::meta::FrontendWorkloads)},
-  { 34, -1, -1, sizeof(::greptime::v1::meta::FlownodeWorkloads)},
-  { 41, -1, -1, sizeof(::greptime::v1::meta::NodeInfo)},
-  { 52, 60, -1, sizeof(::greptime::v1::meta::RegionStat_ExtensionsEntry_DoNotUse)},
-  { 62, -1, -1, sizeof(::greptime::v1::meta::RegionStat)},
-  { 75, -1, -1, sizeof(::greptime::v1::meta::TopicStat)},
-  { 85, 93, -1, sizeof(::greptime::v1::meta::FlowStat_FlowStatSizeEntry_DoNotUse)},
-  { 95, 103, -1, sizeof(::greptime::v1::meta::FlowStat_FlowLastExecTimeMapEntry_DoNotUse)},
-  { 105, -1, -1, sizeof(::greptime::v1::meta::FlowStat)},
-  { 113, -1, -1, sizeof(::greptime::v1::meta::HeartbeatResponse)},
-  { 122, 130, -1, sizeof(::greptime::v1::meta::GrantedRegion_ExtensionsEntry_DoNotUse)},
-  { 132, -1, -1, sizeof(::greptime::v1::meta::GrantedRegion)},
-  { 141, -1, -1, sizeof(::greptime::v1::meta::RegionLease)},
-  { 151, -1, -1, sizeof(::greptime::v1::meta::AskLeaderRequest)},
-  { 158, -1, -1, sizeof(::greptime::v1::meta::AskLeaderResponse)},
-  { 166, -1, -1, sizeof(::greptime::v1::meta::MailboxMessage)},
+  { 0, 8, -1, sizeof(::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse)},
+  { 10, -1, -1, sizeof(::greptime::v1::meta::HeartbeatRequest)},
+  { 31, -1, -1, sizeof(::greptime::v1::meta::DatanodeWorkloads)},
+  { 38, -1, -1, sizeof(::greptime::v1::meta::FrontendWorkloads)},
+  { 45, -1, -1, sizeof(::greptime::v1::meta::FlownodeWorkloads)},
+  { 52, -1, -1, sizeof(::greptime::v1::meta::NodeInfo)},
+  { 63, 71, -1, sizeof(::greptime::v1::meta::RegionStat_ExtensionsEntry_DoNotUse)},
+  { 73, -1, -1, sizeof(::greptime::v1::meta::RegionStat)},
+  { 86, -1, -1, sizeof(::greptime::v1::meta::TopicStat)},
+  { 96, 104, -1, sizeof(::greptime::v1::meta::FlowStat_FlowStatSizeEntry_DoNotUse)},
+  { 106, 114, -1, sizeof(::greptime::v1::meta::FlowStat_FlowLastExecTimeMapEntry_DoNotUse)},
+  { 116, -1, -1, sizeof(::greptime::v1::meta::FlowStat)},
+  { 124, -1, -1, sizeof(::greptime::v1::meta::HeartbeatResponse)},
+  { 133, 141, -1, sizeof(::greptime::v1::meta::GrantedRegion_ExtensionsEntry_DoNotUse)},
+  { 143, -1, -1, sizeof(::greptime::v1::meta::GrantedRegion)},
+  { 152, -1, -1, sizeof(::greptime::v1::meta::RegionLease)},
+  { 162, -1, -1, sizeof(::greptime::v1::meta::AskLeaderRequest)},
+  { 169, -1, -1, sizeof(::greptime::v1::meta::AskLeaderResponse)},
+  { 177, -1, -1, sizeof(::greptime::v1::meta::MailboxMessage)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
+  &::greptime::v1::meta::_HeartbeatRequest_ExtensionsEntry_DoNotUse_default_instance_._instance,
   &::greptime::v1::meta::_HeartbeatRequest_default_instance_._instance,
   &::greptime::v1::meta::_DatanodeWorkloads_default_instance_._instance,
   &::greptime::v1::meta::_FrontendWorkloads_default_instance_._instance,
@@ -525,7 +550,7 @@ static const ::_pb::Message* const file_default_instances[] = {
 const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fheartbeat_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
   "\n greptime/v1/meta/heartbeat.proto\022\020grep"
   "time.v1.meta\032\035greptime/v1/meta/common.pr"
-  "oto\"\213\005\n\020HeartbeatRequest\022/\n\006header\030\001 \001(\013"
+  "oto\"\206\006\n\020HeartbeatRequest\022/\n\006header\030\001 \001(\013"
   "2\037.greptime.v1.meta.RequestHeader\022$\n\004pee"
   "r\030\002 \001(\0132\026.greptime.v1.meta.Peer\0227\n\017repor"
   "t_interval\030\003 \001(\0132\036.greptime.v1.meta.Time"
@@ -540,68 +565,71 @@ const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fheartbeat_2eproto[]
   "rontend\030\013 \001(\0132#.greptime.v1.meta.Fronten"
   "dWorkloadsH\000\0227\n\010flownode\030\014 \001(\0132#.greptim"
   "e.v1.meta.FlownodeWorkloadsH\000\0220\n\013topic_s"
-  "tats\030\r \003(\0132\033.greptime.v1.meta.TopicStatB"
-  "\020\n\016node_workloads\"\"\n\021DatanodeWorkloads\022\r"
-  "\n\005types\030\001 \003(\005\"\"\n\021FrontendWorkloads\022\r\n\005ty"
-  "pes\030\001 \003(\005\"\"\n\021FlownodeWorkloads\022\r\n\005types\030"
-  "\001 \003(\005\"j\n\010NodeInfo\022\017\n\007version\030\001 \001(\t\022\022\n\ngi"
-  "t_commit\030\002 \001(\t\022\025\n\rstart_time_ms\030\003 \001(\004\022\014\n"
-  "\004cpus\030\004 \001(\r\022\024\n\014memory_bytes\030\005 \001(\004\"\207\002\n\nRe"
-  "gionStat\022\021\n\tregion_id\030\001 \001(\004\022\014\n\004rcus\030\002 \001("
-  "\003\022\014\n\004wcus\030\003 \001(\003\022\031\n\021approximate_bytes\030\004 \001"
-  "(\003\022\016\n\006engine\030\006 \001(\t\022*\n\004role\030\007 \001(\0162\034.grept"
-  "ime.v1.meta.RegionRole\022@\n\nextensions\030c \003"
-  "(\0132,.greptime.v1.meta.RegionStat.Extensi"
-  "onsEntry\0321\n\017ExtensionsEntry\022\013\n\003key\030\001 \001(\t"
-  "\022\r\n\005value\030\002 \001(\014:\0028\001\"a\n\tTopicStat\022\022\n\ntopi"
-  "c_name\030\001 \001(\t\022\023\n\013record_size\030\002 \001(\004\022\022\n\nrec"
-  "ord_num\030\003 \001(\004\022\027\n\017latest_entry_id\030\004 \001(\004\"\227"
-  "\002\n\010FlowStat\022D\n\016flow_stat_size\030\001 \003(\0132,.gr"
-  "eptime.v1.meta.FlowStat.FlowStatSizeEntr"
-  "y\022T\n\027flow_last_exec_time_map\030\002 \003(\01323.gre"
-  "ptime.v1.meta.FlowStat.FlowLastExecTimeM"
-  "apEntry\0323\n\021FlowStatSizeEntry\022\013\n\003key\030\001 \001("
-  "\r\022\r\n\005value\030\002 \001(\004:\0028\001\032:\n\030FlowLastExecTime"
-  "MapEntry\022\013\n\003key\030\001 \001(\r\022\r\n\005value\030\002 \001(\003:\0028\001"
-  "\"\265\001\n\021HeartbeatResponse\0220\n\006header\030\001 \001(\0132 "
-  ".greptime.v1.meta.ResponseHeader\0229\n\017mail"
-  "box_message\030\002 \001(\0132 .greptime.v1.meta.Mai"
-  "lboxMessage\0223\n\014region_lease\030\003 \001(\0132\035.grep"
-  "time.v1.meta.RegionLease\"\306\001\n\rGrantedRegi"
-  "on\022\021\n\tregion_id\030\001 \001(\004\022*\n\004role\030\002 \001(\0162\034.gr"
-  "eptime.v1.meta.RegionRole\022C\n\nextensions\030"
-  "c \003(\0132/.greptime.v1.meta.GrantedRegion.E"
-  "xtensionsEntry\0321\n\017ExtensionsEntry\022\013\n\003key"
-  "\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\222\001\n\013RegionLeas"
-  "e\0220\n\007regions\030\001 \003(\0132\037.greptime.v1.meta.Gr"
-  "antedRegion\022\034\n\024duration_since_epoch\030\002 \001("
-  "\004\022\025\n\rlease_seconds\030\003 \001(\004\022\034\n\024closeable_re"
-  "gion_ids\030\004 \003(\004\"C\n\020AskLeaderRequest\022/\n\006he"
-  "ader\030\001 \001(\0132\037.greptime.v1.meta.RequestHea"
-  "der\"m\n\021AskLeaderResponse\0220\n\006header\030\001 \001(\013"
-  "2 .greptime.v1.meta.ResponseHeader\022&\n\006le"
-  "ader\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n\016Ma"
-  "ilboxMessage\022\n\n\002id\030\001 \001(\004\022\017\n\007subject\030\002 \001("
-  "\t\022\014\n\004from\030\003 \001(\t\022\n\n\002to\030\004 \001(\t\022\030\n\020timestamp"
-  "_millis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007payload"
-  "*=\n\nRegionRole\022\n\n\006Leader\020\000\022\014\n\010Follower\020\001"
-  "\022\025\n\021DowngradingLeader\020\0022\277\001\n\tHeartbeat\022Z\n"
-  "\tHeartbeat\022\".greptime.v1.meta.HeartbeatR"
-  "equest\032#.greptime.v1.meta.HeartbeatRespo"
-  "nse\"\000(\0010\001\022V\n\tAskLeader\022\".greptime.v1.met"
-  "a.AskLeaderRequest\032#.greptime.v1.meta.As"
-  "kLeaderResponse\"\000B<Z:github.com/Greptime"
-  "Team/greptime-proto/go/greptime/v1/metab"
-  "\006proto3"
+  "tats\030\r \003(\0132\033.greptime.v1.meta.TopicStat\022"
+  "F\n\nextensions\030c \003(\01322.greptime.v1.meta.H"
+  "eartbeatRequest.ExtensionsEntry\0321\n\017Exten"
+  "sionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\002"
+  "8\001B\020\n\016node_workloads\"\"\n\021DatanodeWorkload"
+  "s\022\r\n\005types\030\001 \003(\005\"\"\n\021FrontendWorkloads\022\r\n"
+  "\005types\030\001 \003(\005\"\"\n\021FlownodeWorkloads\022\r\n\005typ"
+  "es\030\001 \003(\005\"j\n\010NodeInfo\022\017\n\007version\030\001 \001(\t\022\022\n"
+  "\ngit_commit\030\002 \001(\t\022\025\n\rstart_time_ms\030\003 \001(\004"
+  "\022\014\n\004cpus\030\004 \001(\r\022\024\n\014memory_bytes\030\005 \001(\004\"\207\002\n"
+  "\nRegionStat\022\021\n\tregion_id\030\001 \001(\004\022\014\n\004rcus\030\002"
+  " \001(\003\022\014\n\004wcus\030\003 \001(\003\022\031\n\021approximate_bytes\030"
+  "\004 \001(\003\022\016\n\006engine\030\006 \001(\t\022*\n\004role\030\007 \001(\0162\034.gr"
+  "eptime.v1.meta.RegionRole\022@\n\nextensions\030"
+  "c \003(\0132,.greptime.v1.meta.RegionStat.Exte"
+  "nsionsEntry\0321\n\017ExtensionsEntry\022\013\n\003key\030\001 "
+  "\001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"a\n\tTopicStat\022\022\n\nt"
+  "opic_name\030\001 \001(\t\022\023\n\013record_size\030\002 \001(\004\022\022\n\n"
+  "record_num\030\003 \001(\004\022\027\n\017latest_entry_id\030\004 \001("
+  "\004\"\227\002\n\010FlowStat\022D\n\016flow_stat_size\030\001 \003(\0132,"
+  ".greptime.v1.meta.FlowStat.FlowStatSizeE"
+  "ntry\022T\n\027flow_last_exec_time_map\030\002 \003(\01323."
+  "greptime.v1.meta.FlowStat.FlowLastExecTi"
+  "meMapEntry\0323\n\021FlowStatSizeEntry\022\013\n\003key\030\001"
+  " \001(\r\022\r\n\005value\030\002 \001(\004:\0028\001\032:\n\030FlowLastExecT"
+  "imeMapEntry\022\013\n\003key\030\001 \001(\r\022\r\n\005value\030\002 \001(\003:"
+  "\0028\001\"\265\001\n\021HeartbeatResponse\0220\n\006header\030\001 \001("
+  "\0132 .greptime.v1.meta.ResponseHeader\0229\n\017m"
+  "ailbox_message\030\002 \001(\0132 .greptime.v1.meta."
+  "MailboxMessage\0223\n\014region_lease\030\003 \001(\0132\035.g"
+  "reptime.v1.meta.RegionLease\"\306\001\n\rGrantedR"
+  "egion\022\021\n\tregion_id\030\001 \001(\004\022*\n\004role\030\002 \001(\0162\034"
+  ".greptime.v1.meta.RegionRole\022C\n\nextensio"
+  "ns\030c \003(\0132/.greptime.v1.meta.GrantedRegio"
+  "n.ExtensionsEntry\0321\n\017ExtensionsEntry\022\013\n\003"
+  "key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\222\001\n\013RegionL"
+  "ease\0220\n\007regions\030\001 \003(\0132\037.greptime.v1.meta"
+  ".GrantedRegion\022\034\n\024duration_since_epoch\030\002"
+  " \001(\004\022\025\n\rlease_seconds\030\003 \001(\004\022\034\n\024closeable"
+  "_region_ids\030\004 \003(\004\"C\n\020AskLeaderRequest\022/\n"
+  "\006header\030\001 \001(\0132\037.greptime.v1.meta.Request"
+  "Header\"m\n\021AskLeaderResponse\0220\n\006header\030\001 "
+  "\001(\0132 .greptime.v1.meta.ResponseHeader\022&\n"
+  "\006leader\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n"
+  "\016MailboxMessage\022\n\n\002id\030\001 \001(\004\022\017\n\007subject\030\002"
+  " \001(\t\022\014\n\004from\030\003 \001(\t\022\n\n\002to\030\004 \001(\t\022\030\n\020timest"
+  "amp_millis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007payl"
+  "oad*=\n\nRegionRole\022\n\n\006Leader\020\000\022\014\n\010Followe"
+  "r\020\001\022\025\n\021DowngradingLeader\020\0022\277\001\n\tHeartbeat"
+  "\022Z\n\tHeartbeat\022\".greptime.v1.meta.Heartbe"
+  "atRequest\032#.greptime.v1.meta.HeartbeatRe"
+  "sponse\"\000(\0010\001\022V\n\tAskLeader\022\".greptime.v1."
+  "meta.AskLeaderRequest\032#.greptime.v1.meta"
+  ".AskLeaderResponse\"\000B<Z:github.com/Grept"
+  "imeTeam/greptime-proto/go/greptime/v1/me"
+  "tab\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_deps[1] = {
   &::descriptor_table_greptime_2fv1_2fmeta_2fcommon_2eproto,
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto = {
-    false, false, 2767, descriptor_table_protodef_greptime_2fv1_2fmeta_2fheartbeat_2eproto,
+    false, false, 2890, descriptor_table_protodef_greptime_2fv1_2fmeta_2fheartbeat_2eproto,
     "greptime/v1/meta/heartbeat.proto",
-    &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_deps, 1, 18,
+    &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_deps, 1, 19,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto, file_level_enum_descriptors_greptime_2fv1_2fmeta_2fheartbeat_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fmeta_2fheartbeat_2eproto,
@@ -631,6 +659,20 @@ bool RegionRole_IsValid(int value) {
 }
 
 
+// ===================================================================
+
+HeartbeatRequest_ExtensionsEntry_DoNotUse::HeartbeatRequest_ExtensionsEntry_DoNotUse() {}
+HeartbeatRequest_ExtensionsEntry_DoNotUse::HeartbeatRequest_ExtensionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena)
+    : SuperType(arena) {}
+void HeartbeatRequest_ExtensionsEntry_DoNotUse::MergeFrom(const HeartbeatRequest_ExtensionsEntry_DoNotUse& other) {
+  MergeFromInternal(other);
+}
+::PROTOBUF_NAMESPACE_ID::Metadata HeartbeatRequest_ExtensionsEntry_DoNotUse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[0]);
+}
+
 // ===================================================================
 
 class HeartbeatRequest::_Internal {
@@ -749,6 +791,9 @@ HeartbeatRequest::HeartbeatRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
   SharedCtor(arena, is_message_owned);
+  if (arena != nullptr && !is_message_owned) {
+    arena->OwnCustomDestructor(this, &HeartbeatRequest::ArenaDtor);
+  }
   // @@protoc_insertion_point(arena_constructor:greptime.v1.meta.HeartbeatRequest)
 }
 HeartbeatRequest::HeartbeatRequest(const HeartbeatRequest& from)
@@ -757,6 +802,7 @@ HeartbeatRequest::HeartbeatRequest(const HeartbeatRequest& from)
   new (&_impl_) Impl_{
       decltype(_impl_.region_stats_){from._impl_.region_stats_}
     , decltype(_impl_.topic_stats_){from._impl_.topic_stats_}
+    , /*decltype(_impl_.extensions_)*/{}
     , decltype(_impl_.header_){nullptr}
     , decltype(_impl_.peer_){nullptr}
     , decltype(_impl_.report_interval_){nullptr}
@@ -770,6 +816,7 @@ HeartbeatRequest::HeartbeatRequest(const HeartbeatRequest& from)
     , /*decltype(_impl_._oneof_case_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  _this->_impl_.extensions_.MergeFrom(from._impl_.extensions_);
   if (from._internal_has_header()) {
     _this->_impl_.header_ = new ::greptime::v1::meta::RequestHeader(*from._impl_.header_);
   }
@@ -822,6 +869,7 @@ inline void HeartbeatRequest::SharedCtor(
   new (&_impl_) Impl_{
       decltype(_impl_.region_stats_){arena}
     , decltype(_impl_.topic_stats_){arena}
+    , /*decltype(_impl_.extensions_)*/{::_pbi::ArenaInitialized(), arena}
     , decltype(_impl_.header_){nullptr}
     , decltype(_impl_.peer_){nullptr}
     , decltype(_impl_.report_interval_){nullptr}
@@ -841,6 +889,7 @@ HeartbeatRequest::~HeartbeatRequest() {
   // @@protoc_insertion_point(destructor:greptime.v1.meta.HeartbeatRequest)
   if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
   (void)arena;
+    ArenaDtor(this);
     return;
   }
   SharedDtor();
@@ -850,6 +899,8 @@ inline void HeartbeatRequest::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   _impl_.region_stats_.~RepeatedPtrField();
   _impl_.topic_stats_.~RepeatedPtrField();
+  _impl_.extensions_.Destruct();
+  _impl_.extensions_.~MapField();
   if (this != internal_default_instance()) delete _impl_.header_;
   if (this != internal_default_instance()) delete _impl_.peer_;
   if (this != internal_default_instance()) delete _impl_.report_interval_;
@@ -861,6 +912,10 @@ inline void HeartbeatRequest::SharedDtor() {
   }
 }
 
+void HeartbeatRequest::ArenaDtor(void* object) {
+  HeartbeatRequest* _this = reinterpret_cast< HeartbeatRequest* >(object);
+  _this->_impl_.extensions_.Destruct();
+}
 void HeartbeatRequest::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
 }
@@ -902,6 +957,7 @@ void HeartbeatRequest::Clear() {
 
   _impl_.region_stats_.Clear();
   _impl_.topic_stats_.Clear();
+  _impl_.extensions_.Clear();
   if (GetArenaForAllocation() == nullptr && _impl_.header_ != nullptr) {
     delete _impl_.header_;
   }
@@ -1053,6 +1109,19 @@ const char* HeartbeatRequest::_InternalParse(const char* ptr, ::_pbi::ParseConte
         } else
           goto handle_unusual;
         continue;
+      // map<string, bytes> extensions = 99;
+      case 99:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 26)) {
+          ptr -= 2;
+          do {
+            ptr += 2;
+            ptr = ctx->ParseMessage(&_impl_.extensions_, ptr);
+            CHK_(ptr);
+            if (!ctx->DataAvailable(ptr)) break;
+          } while (::PROTOBUF_NAMESPACE_ID::internal::ExpectTag<794>(ptr));
+        } else
+          goto handle_unusual;
+        continue;
       default:
         goto handle_unusual;
     }  // switch
@@ -1173,6 +1242,32 @@ uint8_t* HeartbeatRequest::_InternalSerialize(
         InternalWriteMessage(13, repfield, repfield.GetCachedSize(), target, stream);
   }
 
+  // map<string, bytes> extensions = 99;
+  if (!this->_internal_extensions().empty()) {
+    using MapType = ::_pb::Map<std::string, std::string>;
+    using WireHelper = HeartbeatRequest_ExtensionsEntry_DoNotUse::Funcs;
+    const auto& map_field = this->_internal_extensions();
+    auto check_utf8 = [](const MapType::value_type& entry) {
+      (void)entry;
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
+        entry.first.data(), static_cast<int>(entry.first.length()),
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
+        "greptime.v1.meta.HeartbeatRequest.ExtensionsEntry.key");
+    };
+
+    if (stream->IsSerializationDeterministic() && map_field.size() > 1) {
+      for (const auto& entry : ::_pbi::MapSorterPtr<MapType>(map_field)) {
+        target = WireHelper::InternalSerialize(99, entry.first, entry.second, target, stream);
+        check_utf8(entry);
+      }
+    } else {
+      for (const auto& entry : map_field) {
+        target = WireHelper::InternalSerialize(99, entry.first, entry.second, target, stream);
+        check_utf8(entry);
+      }
+    }
+  }
+
   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);
@@ -1203,6 +1298,15 @@ size_t HeartbeatRequest::ByteSizeLong() const {
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(msg);
   }
 
+  // map<string, bytes> extensions = 99;
+  total_size += 2 *
+      ::PROTOBUF_NAMESPACE_ID::internal::FromIntSize(this->_internal_extensions_size());
+  for (::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >::const_iterator
+      it = this->_internal_extensions().begin();
+      it != this->_internal_extensions().end(); ++it) {
+    total_size += HeartbeatRequest_ExtensionsEntry_DoNotUse::Funcs::ByteSizeLong(it->first, it->second);
+  }
+
   // .greptime.v1.meta.RequestHeader header = 1;
   if (this->_internal_has_header()) {
     total_size += 1 +
@@ -1301,6 +1405,7 @@ void HeartbeatRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const
 
   _this->_impl_.region_stats_.MergeFrom(from._impl_.region_stats_);
   _this->_impl_.topic_stats_.MergeFrom(from._impl_.topic_stats_);
+  _this->_impl_.extensions_.MergeFrom(from._impl_.extensions_);
   if (from._internal_has_header()) {
     _this->_internal_mutable_header()->::greptime::v1::meta::RequestHeader::MergeFrom(
         from._internal_header());
@@ -1370,6 +1475,7 @@ void HeartbeatRequest::InternalSwap(HeartbeatRequest* other) {
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
   _impl_.region_stats_.InternalSwap(&other->_impl_.region_stats_);
   _impl_.topic_stats_.InternalSwap(&other->_impl_.topic_stats_);
+  _impl_.extensions_.InternalSwap(&other->_impl_.extensions_);
   ::PROTOBUF_NAMESPACE_ID::internal::memswap<
       PROTOBUF_FIELD_OFFSET(HeartbeatRequest, _impl_.node_epoch_)
       + sizeof(HeartbeatRequest::_impl_.node_epoch_)
@@ -1383,7 +1489,7 @@ void HeartbeatRequest::InternalSwap(HeartbeatRequest* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata HeartbeatRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[0]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[1]);
 }
 
 // ===================================================================
@@ -1576,7 +1682,7 @@ void DatanodeWorkloads::InternalSwap(DatanodeWorkloads* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata DatanodeWorkloads::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[1]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[2]);
 }
 
 // ===================================================================
@@ -1769,7 +1875,7 @@ void FrontendWorkloads::InternalSwap(FrontendWorkloads* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata FrontendWorkloads::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[2]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[3]);
 }
 
 // ===================================================================
@@ -1962,7 +2068,7 @@ void FlownodeWorkloads::InternalSwap(FlownodeWorkloads* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata FlownodeWorkloads::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[3]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[4]);
 }
 
 // ===================================================================
@@ -2299,7 +2405,7 @@ void NodeInfo::InternalSwap(NodeInfo* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata NodeInfo::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[4]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[5]);
 }
 
 // ===================================================================
@@ -2313,7 +2419,7 @@ void RegionStat_ExtensionsEntry_DoNotUse::MergeFrom(const RegionStat_ExtensionsE
 ::PROTOBUF_NAMESPACE_ID::Metadata RegionStat_ExtensionsEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[5]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[6]);
 }
 
 // ===================================================================
@@ -2715,7 +2821,7 @@ void RegionStat::InternalSwap(RegionStat* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata RegionStat::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[6]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[7]);
 }
 
 // ===================================================================
@@ -3002,7 +3108,7 @@ void TopicStat::InternalSwap(TopicStat* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata TopicStat::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[7]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[8]);
 }
 
 // ===================================================================
@@ -3016,7 +3122,7 @@ void FlowStat_FlowStatSizeEntry_DoNotUse::MergeFrom(const FlowStat_FlowStatSizeE
 ::PROTOBUF_NAMESPACE_ID::Metadata FlowStat_FlowStatSizeEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[8]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[9]);
 }
 
 // ===================================================================
@@ -3030,7 +3136,7 @@ void FlowStat_FlowLastExecTimeMapEntry_DoNotUse::MergeFrom(const FlowStat_FlowLa
 ::PROTOBUF_NAMESPACE_ID::Metadata FlowStat_FlowLastExecTimeMapEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[9]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[10]);
 }
 
 // ===================================================================
@@ -3284,7 +3390,7 @@ void FlowStat::InternalSwap(FlowStat* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata FlowStat::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[10]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[11]);
 }
 
 // ===================================================================
@@ -3570,7 +3676,7 @@ void HeartbeatResponse::InternalSwap(HeartbeatResponse* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata HeartbeatResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[11]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[12]);
 }
 
 // ===================================================================
@@ -3584,7 +3690,7 @@ void GrantedRegion_ExtensionsEntry_DoNotUse::MergeFrom(const GrantedRegion_Exten
 ::PROTOBUF_NAMESPACE_ID::Metadata GrantedRegion_ExtensionsEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[12]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[13]);
 }
 
 // ===================================================================
@@ -3862,7 +3968,7 @@ void GrantedRegion::InternalSwap(GrantedRegion* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata GrantedRegion::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[13]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[14]);
 }
 
 // ===================================================================
@@ -4149,7 +4255,7 @@ void RegionLease::InternalSwap(RegionLease* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata RegionLease::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[14]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[15]);
 }
 
 // ===================================================================
@@ -4348,7 +4454,7 @@ void AskLeaderRequest::InternalSwap(AskLeaderRequest* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata AskLeaderRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[15]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[16]);
 }
 
 // ===================================================================
@@ -4599,7 +4705,7 @@ void AskLeaderResponse::InternalSwap(AskLeaderResponse* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata AskLeaderResponse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[16]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[17]);
 }
 
 // ===================================================================
@@ -5039,7 +5145,7 @@ void MailboxMessage::InternalSwap(MailboxMessage* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata MailboxMessage::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_getter, &descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[17]);
+      file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[18]);
 }
 
 // @@protoc_insertion_point(namespace_scope)
@@ -5047,6 +5153,10 @@ void MailboxMessage::InternalSwap(MailboxMessage* other) {
 }  // namespace v1
 }  // namespace greptime
 PROTOBUF_NAMESPACE_OPEN
+template<> PROTOBUF_NOINLINE ::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse*
+Arena::CreateMaybeMessage< ::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse >(arena);
+}
 template<> PROTOBUF_NOINLINE ::greptime::v1::meta::HeartbeatRequest*
 Arena::CreateMaybeMessage< ::greptime::v1::meta::HeartbeatRequest >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::meta::HeartbeatRequest >(arena);
diff --git a/c++/greptime/v1/meta/heartbeat.pb.h b/c++/greptime/v1/meta/heartbeat.pb.h
index 95383be..fb36714 100644
--- a/c++/greptime/v1/meta/heartbeat.pb.h
+++ b/c++/greptime/v1/meta/heartbeat.pb.h
@@ -85,6 +85,9 @@ extern GrantedRegion_ExtensionsEntry_DoNotUseDefaultTypeInternal _GrantedRegion_
 class HeartbeatRequest;
 struct HeartbeatRequestDefaultTypeInternal;
 extern HeartbeatRequestDefaultTypeInternal _HeartbeatRequest_default_instance_;
+class HeartbeatRequest_ExtensionsEntry_DoNotUse;
+struct HeartbeatRequest_ExtensionsEntry_DoNotUseDefaultTypeInternal;
+extern HeartbeatRequest_ExtensionsEntry_DoNotUseDefaultTypeInternal _HeartbeatRequest_ExtensionsEntry_DoNotUse_default_instance_;
 class HeartbeatResponse;
 struct HeartbeatResponseDefaultTypeInternal;
 extern HeartbeatResponseDefaultTypeInternal _HeartbeatResponse_default_instance_;
@@ -121,6 +124,7 @@ template<> ::greptime::v1::meta::FrontendWorkloads* Arena::CreateMaybeMessage<::
 template<> ::greptime::v1::meta::GrantedRegion* Arena::CreateMaybeMessage<::greptime::v1::meta::GrantedRegion>(Arena*);
 template<> ::greptime::v1::meta::GrantedRegion_ExtensionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::meta::GrantedRegion_ExtensionsEntry_DoNotUse>(Arena*);
 template<> ::greptime::v1::meta::HeartbeatRequest* Arena::CreateMaybeMessage<::greptime::v1::meta::HeartbeatRequest>(Arena*);
+template<> ::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::meta::HeartbeatRequest_ExtensionsEntry_DoNotUse>(Arena*);
 template<> ::greptime::v1::meta::HeartbeatResponse* Arena::CreateMaybeMessage<::greptime::v1::meta::HeartbeatResponse>(Arena*);
 template<> ::greptime::v1::meta::MailboxMessage* Arena::CreateMaybeMessage<::greptime::v1::meta::MailboxMessage>(Arena*);
 template<> ::greptime::v1::meta::NodeInfo* Arena::CreateMaybeMessage<::greptime::v1::meta::NodeInfo>(Arena*);
@@ -161,6 +165,32 @@ inline bool RegionRole_Parse(
 }
 // ===================================================================
 
+class HeartbeatRequest_ExtensionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<HeartbeatRequest_ExtensionsEntry_DoNotUse, 
+    std::string, std::string,
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_BYTES> {
+public:
+  typedef ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<HeartbeatRequest_ExtensionsEntry_DoNotUse, 
+    std::string, std::string,
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_BYTES> SuperType;
+  HeartbeatRequest_ExtensionsEntry_DoNotUse();
+  explicit PROTOBUF_CONSTEXPR HeartbeatRequest_ExtensionsEntry_DoNotUse(
+      ::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+  explicit HeartbeatRequest_ExtensionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena);
+  void MergeFrom(const HeartbeatRequest_ExtensionsEntry_DoNotUse& other);
+  static const HeartbeatRequest_ExtensionsEntry_DoNotUse* internal_default_instance() { return reinterpret_cast<const HeartbeatRequest_ExtensionsEntry_DoNotUse*>(&_HeartbeatRequest_ExtensionsEntry_DoNotUse_default_instance_); }
+  static bool ValidateKey(std::string* s) {
+    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.meta.HeartbeatRequest.ExtensionsEntry.key");
+ }
+  static bool ValidateValue(void*) { return true; }
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+  friend struct ::TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto;
+};
+
+// -------------------------------------------------------------------
+
 class HeartbeatRequest final :
     public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.meta.HeartbeatRequest) */ {
  public:
@@ -216,7 +246,7 @@ class HeartbeatRequest final :
                &_HeartbeatRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    0;
+    1;
 
   friend void swap(HeartbeatRequest& a, HeartbeatRequest& b) {
     a.Swap(&b);
@@ -277,6 +307,8 @@ class HeartbeatRequest final :
   protected:
   explicit HeartbeatRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                        bool is_message_owned = false);
+  private:
+  static void ArenaDtor(void* object);
   public:
 
   static const ClassData _class_data_;
@@ -286,11 +318,13 @@ class HeartbeatRequest final :
 
   // nested types ----------------------------------------------------
 
+
   // accessors -------------------------------------------------------
 
   enum : int {
     kRegionStatsFieldNumber = 4,
     kTopicStatsFieldNumber = 13,
+    kExtensionsFieldNumber = 99,
     kHeaderFieldNumber = 1,
     kPeerFieldNumber = 2,
     kReportIntervalFieldNumber = 3,
@@ -339,6 +373,23 @@ class HeartbeatRequest final :
   const ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::meta::TopicStat >&
       topic_stats() const;
 
+  // map<string, bytes> extensions = 99;
+  int extensions_size() const;
+  private:
+  int _internal_extensions_size() const;
+  public:
+  void clear_extensions();
+  private:
+  const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
+      _internal_extensions() const;
+  ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
+      _internal_mutable_extensions();
+  public:
+  const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
+      extensions() const;
+  ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
+      mutable_extensions();
+
   // .greptime.v1.meta.RequestHeader header = 1;
   bool has_header() const;
   private:
@@ -537,6 +588,11 @@ class HeartbeatRequest final :
   struct Impl_ {
     ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::meta::RegionStat > region_stats_;
     ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::meta::TopicStat > topic_stats_;
+    ::PROTOBUF_NAMESPACE_ID::internal::MapField<
+        HeartbeatRequest_ExtensionsEntry_DoNotUse,
+        std::string, std::string,
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_BYTES> extensions_;
     ::greptime::v1::meta::RequestHeader* header_;
     ::greptime::v1::meta::Peer* peer_;
     ::greptime::v1::meta::TimeInterval* report_interval_;
@@ -609,7 +665,7 @@ class DatanodeWorkloads final :
                &_DatanodeWorkloads_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    1;
+    2;
 
   friend void swap(DatanodeWorkloads& a, DatanodeWorkloads& b) {
     a.Swap(&b);
@@ -771,7 +827,7 @@ class FrontendWorkloads final :
                &_FrontendWorkloads_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    2;
+    3;
 
   friend void swap(FrontendWorkloads& a, FrontendWorkloads& b) {
     a.Swap(&b);
@@ -933,7 +989,7 @@ class FlownodeWorkloads final :
                &_FlownodeWorkloads_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    3;
+    4;
 
   friend void swap(FlownodeWorkloads& a, FlownodeWorkloads& b) {
     a.Swap(&b);
@@ -1095,7 +1151,7 @@ class NodeInfo final :
                &_NodeInfo_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    4;
+    5;
 
   friend void swap(NodeInfo& a, NodeInfo& b) {
     a.Swap(&b);
@@ -1323,7 +1379,7 @@ class RegionStat final :
                &_RegionStat_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    6;
+    7;
 
   friend void swap(RegionStat& a, RegionStat& b) {
     a.Swap(&b);
@@ -1557,7 +1613,7 @@ class TopicStat final :
                &_TopicStat_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    7;
+    8;
 
   friend void swap(TopicStat& a, TopicStat& b) {
     a.Swap(&b);
@@ -1791,7 +1847,7 @@ class FlowStat final :
                &_FlowStat_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    10;
+    11;
 
   friend void swap(FlowStat& a, FlowStat& b) {
     a.Swap(&b);
@@ -1977,7 +2033,7 @@ class HeartbeatResponse final :
                &_HeartbeatResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    11;
+    12;
 
   friend void swap(HeartbeatResponse& a, HeartbeatResponse& b) {
     a.Swap(&b);
@@ -2200,7 +2256,7 @@ class GrantedRegion final :
                &_GrantedRegion_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    13;
+    14;
 
   friend void swap(GrantedRegion& a, GrantedRegion& b) {
     a.Swap(&b);
@@ -2385,7 +2441,7 @@ class RegionLease final :
                &_RegionLease_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    14;
+    15;
 
   friend void swap(RegionLease& a, RegionLease& b) {
     a.Swap(&b);
@@ -2589,7 +2645,7 @@ class AskLeaderRequest final :
                &_AskLeaderRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    15;
+    16;
 
   friend void swap(AskLeaderRequest& a, AskLeaderRequest& b) {
     a.Swap(&b);
@@ -2746,7 +2802,7 @@ class AskLeaderResponse final :
                &_AskLeaderResponse_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    16;
+    17;
 
   friend void swap(AskLeaderResponse& a, AskLeaderResponse& b) {
     a.Swap(&b);
@@ -2928,7 +2984,7 @@ class MailboxMessage final :
                &_MailboxMessage_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    17;
+    18;
 
   friend void swap(MailboxMessage& a, MailboxMessage& b) {
     a.Swap(&b);
@@ -3126,6 +3182,8 @@ class MailboxMessage final :
   #pragma GCC diagnostic push
   #pragma GCC diagnostic ignored "-Wstrict-aliasing"
 #endif  // __GNUC__
+// -------------------------------------------------------------------
+
 // HeartbeatRequest
 
 // .greptime.v1.meta.RequestHeader header = 1;
@@ -3995,6 +4053,35 @@ HeartbeatRequest::topic_stats() const {
   return _impl_.topic_stats_;
 }
 
+// map<string, bytes> extensions = 99;
+inline int HeartbeatRequest::_internal_extensions_size() const {
+  return _impl_.extensions_.size();
+}
+inline int HeartbeatRequest::extensions_size() const {
+  return _internal_extensions_size();
+}
+inline void HeartbeatRequest::clear_extensions() {
+  _impl_.extensions_.Clear();
+}
+inline const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
+HeartbeatRequest::_internal_extensions() const {
+  return _impl_.extensions_.GetMap();
+}
+inline const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
+HeartbeatRequest::extensions() const {
+  // @@protoc_insertion_point(field_map:greptime.v1.meta.HeartbeatRequest.extensions)
+  return _internal_extensions();
+}
+inline ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
+HeartbeatRequest::_internal_mutable_extensions() {
+  return _impl_.extensions_.MutableMap();
+}
+inline ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
+HeartbeatRequest::mutable_extensions() {
+  // @@protoc_insertion_point(field_mutable_map:greptime.v1.meta.HeartbeatRequest.extensions)
+  return _internal_mutable_extensions();
+}
+
 inline bool HeartbeatRequest::has_node_workloads() const {
   return node_workloads_case() != NODE_WORKLOADS_NOT_SET;
 }
@@ -5741,6 +5828,8 @@ inline MailboxMessage::PayloadCase MailboxMessage::payload_case() const {
 
 // -------------------------------------------------------------------
 
+// -------------------------------------------------------------------
+
 
 // @@protoc_insertion_point(namespace_scope)
 
diff --git a/go/greptime/v1/meta/heartbeat.pb.go b/go/greptime/v1/meta/heartbeat.pb.go
index 5c4c87c..2c4c2d4 100644
--- a/go/greptime/v1/meta/heartbeat.pb.go
+++ b/go/greptime/v1/meta/heartbeat.pb.go
@@ -119,7 +119,8 @@ type HeartbeatRequest struct {
 	//	*HeartbeatRequest_Flownode
 	NodeWorkloads isHeartbeatRequest_NodeWorkloads `protobuf_oneof:"node_workloads"`
 	// The topic stats of the datanode.
-	TopicStats []*TopicStat `protobuf:"bytes,13,rep,name=topic_stats,json=topicStats,proto3" json:"topic_stats,omitempty"`
+	TopicStats []*TopicStat      `protobuf:"bytes,13,rep,name=topic_stats,json=topicStats,proto3" json:"topic_stats,omitempty"`
+	Extensions map[string][]byte `protobuf:"bytes,99,rep,name=extensions,proto3" json:"extensions,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (x *HeartbeatRequest) Reset() {
@@ -252,6 +253,13 @@ func (x *HeartbeatRequest) GetTopicStats() []*TopicStat {
 	return nil
 }
 
+func (x *HeartbeatRequest) GetExtensions() map[string][]byte {
+	if x != nil {
+		return x.Extensions
+	}
+	return nil
+}
+
 type isHeartbeatRequest_NodeWorkloads interface {
 	isHeartbeatRequest_NodeWorkloads()
 }
@@ -1156,7 +1164,7 @@ var file_greptime_v1_meta_heartbeat_proto_rawDesc = []byte{
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@@ -1205,164 +1213,173 @@ var file_greptime_v1_meta_heartbeat_proto_rawDesc = []byte{
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+	0x15, 0x0a, 0x11, 0x44, 0x6f, 0x77, 0x6e, 0x67, 0x72, 0x61, 0x64, 0x69, 0x6e, 0x67, 0x4c, 0x65,
+	0x61, 0x64, 0x65, 0x72, 0x10, 0x02, 0x32, 0xbf, 0x01, 0x0a, 0x09, 0x48, 0x65, 0x61, 0x72, 0x74,
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+	0x74, 0x12, 0x22, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e,
+	0x6d, 0x65, 0x74, 0x61, 0x2e, 0x48, 0x65, 0x61, 0x72, 0x74, 0x62, 0x65, 0x61, 0x74, 0x52, 0x65,
+	0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x23, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65,
+	0x2e, 0x76, 0x31, 0x2e, 0x6d, 0x65, 0x74, 0x61, 0x2e, 0x48, 0x65, 0x61, 0x72, 0x74, 0x62, 0x65,
+	0x61, 0x74, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x28, 0x01, 0x30, 0x01,
+	0x12, 0x56, 0x0a, 0x09, 0x41, 0x73, 0x6b, 0x4c, 0x65, 0x61, 0x64, 0x65, 0x72, 0x12, 0x22, 0x2e,
+	0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x6d, 0x65, 0x74, 0x61,
+	0x2e, 0x41, 0x73, 0x6b, 0x4c, 0x65, 0x61, 0x64, 0x65, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
+	0x74, 0x1a, 0x23, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e,
+	0x6d, 0x65, 0x74, 0x61, 0x2e, 0x41, 0x73, 0x6b, 0x4c, 0x65, 0x61, 0x64, 0x65, 0x72, 0x52, 0x65,
+	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x3c, 0x5a, 0x3a, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x47, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x54,
+	0x65, 0x61, 0x6d, 0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2d, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x2f, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76,
+	0x31, 0x2f, 0x6d, 0x65, 0x74, 0x61, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1378,7 +1395,7 @@ func file_greptime_v1_meta_heartbeat_proto_rawDescGZIP() []byte {
 }
 
 var file_greptime_v1_meta_heartbeat_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_greptime_v1_meta_heartbeat_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_greptime_v1_meta_heartbeat_proto_msgTypes = make([]protoimpl.MessageInfo, 19)
 var file_greptime_v1_meta_heartbeat_proto_goTypes = []interface{}{
 	(RegionRole)(0),           // 0: greptime.v1.meta.RegionRole
 	(*HeartbeatRequest)(nil),  // 1: greptime.v1.meta.HeartbeatRequest
@@ -1395,19 +1412,20 @@ var file_greptime_v1_meta_heartbeat_proto_goTypes = []interface{}{
 	(*AskLeaderRequest)(nil),  // 12: greptime.v1.meta.AskLeaderRequest
 	(*AskLeaderResponse)(nil), // 13: greptime.v1.meta.AskLeaderResponse
 	(*MailboxMessage)(nil),    // 14: greptime.v1.meta.MailboxMessage
-	nil,                       // 15: greptime.v1.meta.RegionStat.ExtensionsEntry
-	nil,                       // 16: greptime.v1.meta.FlowStat.FlowStatSizeEntry
-	nil,                       // 17: greptime.v1.meta.FlowStat.FlowLastExecTimeMapEntry
-	nil,                       // 18: greptime.v1.meta.GrantedRegion.ExtensionsEntry
-	(*RequestHeader)(nil),     // 19: greptime.v1.meta.RequestHeader
-	(*Peer)(nil),              // 20: greptime.v1.meta.Peer
-	(*TimeInterval)(nil),      // 21: greptime.v1.meta.TimeInterval
-	(*ResponseHeader)(nil),    // 22: greptime.v1.meta.ResponseHeader
+	nil,                       // 15: greptime.v1.meta.HeartbeatRequest.ExtensionsEntry
+	nil,                       // 16: greptime.v1.meta.RegionStat.ExtensionsEntry
+	nil,                       // 17: greptime.v1.meta.FlowStat.FlowStatSizeEntry
+	nil,                       // 18: greptime.v1.meta.FlowStat.FlowLastExecTimeMapEntry
+	nil,                       // 19: greptime.v1.meta.GrantedRegion.ExtensionsEntry
+	(*RequestHeader)(nil),     // 20: greptime.v1.meta.RequestHeader
+	(*Peer)(nil),              // 21: greptime.v1.meta.Peer
+	(*TimeInterval)(nil),      // 22: greptime.v1.meta.TimeInterval
+	(*ResponseHeader)(nil),    // 23: greptime.v1.meta.ResponseHeader
 }
 var file_greptime_v1_meta_heartbeat_proto_depIdxs = []int32{
-	19, // 0: greptime.v1.meta.HeartbeatRequest.header:type_name -> greptime.v1.meta.RequestHeader
-	20, // 1: greptime.v1.meta.HeartbeatRequest.peer:type_name -> greptime.v1.meta.Peer
-	21, // 2: greptime.v1.meta.HeartbeatRequest.report_interval:type_name -> greptime.v1.meta.TimeInterval
+	20, // 0: greptime.v1.meta.HeartbeatRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	21, // 1: greptime.v1.meta.HeartbeatRequest.peer:type_name -> greptime.v1.meta.Peer
+	22, // 2: greptime.v1.meta.HeartbeatRequest.report_interval:type_name -> greptime.v1.meta.TimeInterval
 	6,  // 3: greptime.v1.meta.HeartbeatRequest.region_stats:type_name -> greptime.v1.meta.RegionStat
 	14, // 4: greptime.v1.meta.HeartbeatRequest.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
 	5,  // 5: greptime.v1.meta.HeartbeatRequest.info:type_name -> greptime.v1.meta.NodeInfo
@@ -1416,28 +1434,29 @@ var file_greptime_v1_meta_heartbeat_proto_depIdxs = []int32{
 	3,  // 8: greptime.v1.meta.HeartbeatRequest.frontend:type_name -> greptime.v1.meta.FrontendWorkloads
 	4,  // 9: greptime.v1.meta.HeartbeatRequest.flownode:type_name -> greptime.v1.meta.FlownodeWorkloads
 	7,  // 10: greptime.v1.meta.HeartbeatRequest.topic_stats:type_name -> greptime.v1.meta.TopicStat
-	0,  // 11: greptime.v1.meta.RegionStat.role:type_name -> greptime.v1.meta.RegionRole
-	15, // 12: greptime.v1.meta.RegionStat.extensions:type_name -> greptime.v1.meta.RegionStat.ExtensionsEntry
-	16, // 13: greptime.v1.meta.FlowStat.flow_stat_size:type_name -> greptime.v1.meta.FlowStat.FlowStatSizeEntry
-	17, // 14: greptime.v1.meta.FlowStat.flow_last_exec_time_map:type_name -> greptime.v1.meta.FlowStat.FlowLastExecTimeMapEntry
-	22, // 15: greptime.v1.meta.HeartbeatResponse.header:type_name -> greptime.v1.meta.ResponseHeader
-	14, // 16: greptime.v1.meta.HeartbeatResponse.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
-	11, // 17: greptime.v1.meta.HeartbeatResponse.region_lease:type_name -> greptime.v1.meta.RegionLease
-	0,  // 18: greptime.v1.meta.GrantedRegion.role:type_name -> greptime.v1.meta.RegionRole
-	18, // 19: greptime.v1.meta.GrantedRegion.extensions:type_name -> greptime.v1.meta.GrantedRegion.ExtensionsEntry
-	10, // 20: greptime.v1.meta.RegionLease.regions:type_name -> greptime.v1.meta.GrantedRegion
-	19, // 21: greptime.v1.meta.AskLeaderRequest.header:type_name -> greptime.v1.meta.RequestHeader
-	22, // 22: greptime.v1.meta.AskLeaderResponse.header:type_name -> greptime.v1.meta.ResponseHeader
-	20, // 23: greptime.v1.meta.AskLeaderResponse.leader:type_name -> greptime.v1.meta.Peer
-	1,  // 24: greptime.v1.meta.Heartbeat.Heartbeat:input_type -> greptime.v1.meta.HeartbeatRequest
-	12, // 25: greptime.v1.meta.Heartbeat.AskLeader:input_type -> greptime.v1.meta.AskLeaderRequest
-	9,  // 26: greptime.v1.meta.Heartbeat.Heartbeat:output_type -> greptime.v1.meta.HeartbeatResponse
-	13, // 27: greptime.v1.meta.Heartbeat.AskLeader:output_type -> greptime.v1.meta.AskLeaderResponse
-	26, // [26:28] is the sub-list for method output_type
-	24, // [24:26] is the sub-list for method input_type
-	24, // [24:24] is the sub-list for extension type_name
-	24, // [24:24] is the sub-list for extension extendee
-	0,  // [0:24] is the sub-list for field type_name
+	15, // 11: greptime.v1.meta.HeartbeatRequest.extensions:type_name -> greptime.v1.meta.HeartbeatRequest.ExtensionsEntry
+	0,  // 12: greptime.v1.meta.RegionStat.role:type_name -> greptime.v1.meta.RegionRole
+	16, // 13: greptime.v1.meta.RegionStat.extensions:type_name -> greptime.v1.meta.RegionStat.ExtensionsEntry
+	17, // 14: greptime.v1.meta.FlowStat.flow_stat_size:type_name -> greptime.v1.meta.FlowStat.FlowStatSizeEntry
+	18, // 15: greptime.v1.meta.FlowStat.flow_last_exec_time_map:type_name -> greptime.v1.meta.FlowStat.FlowLastExecTimeMapEntry
+	23, // 16: greptime.v1.meta.HeartbeatResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	14, // 17: greptime.v1.meta.HeartbeatResponse.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
+	11, // 18: greptime.v1.meta.HeartbeatResponse.region_lease:type_name -> greptime.v1.meta.RegionLease
+	0,  // 19: greptime.v1.meta.GrantedRegion.role:type_name -> greptime.v1.meta.RegionRole
+	19, // 20: greptime.v1.meta.GrantedRegion.extensions:type_name -> greptime.v1.meta.GrantedRegion.ExtensionsEntry
+	10, // 21: greptime.v1.meta.RegionLease.regions:type_name -> greptime.v1.meta.GrantedRegion
+	20, // 22: greptime.v1.meta.AskLeaderRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	23, // 23: greptime.v1.meta.AskLeaderResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	21, // 24: greptime.v1.meta.AskLeaderResponse.leader:type_name -> greptime.v1.meta.Peer
+	1,  // 25: greptime.v1.meta.Heartbeat.Heartbeat:input_type -> greptime.v1.meta.HeartbeatRequest
+	12, // 26: greptime.v1.meta.Heartbeat.AskLeader:input_type -> greptime.v1.meta.AskLeaderRequest
+	9,  // 27: greptime.v1.meta.Heartbeat.Heartbeat:output_type -> greptime.v1.meta.HeartbeatResponse
+	13, // 28: greptime.v1.meta.Heartbeat.AskLeader:output_type -> greptime.v1.meta.AskLeaderResponse
+	27, // [27:29] is the sub-list for method output_type
+	25, // [25:27] is the sub-list for method input_type
+	25, // [25:25] is the sub-list for extension type_name
+	25, // [25:25] is the sub-list for extension extendee
+	0,  // [0:25] is the sub-list for field type_name
 }
 
 func init() { file_greptime_v1_meta_heartbeat_proto_init() }
@@ -1630,7 +1649,7 @@ func file_greptime_v1_meta_heartbeat_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_meta_heartbeat_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   18,
+			NumMessages:   19,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java b/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
index 0653b22..fb69928 100644
--- a/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
+++ b/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
@@ -444,6 +444,42 @@ public final class HeartbeatOuterClass {
     greptime.v1.meta.HeartbeatOuterClass.TopicStatOrBuilder getTopicStatsOrBuilder(
         int index);
 
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+    int getExtensionsCount();
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+    boolean containsExtensions(
+        java.lang.String key);
+    /**
+     * Use {@link #getExtensionsMap()} instead.
+     */
+    @java.lang.Deprecated
+    java.util.Map<java.lang.String, com.google.protobuf.ByteString>
+    getExtensions();
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+    java.util.Map<java.lang.String, com.google.protobuf.ByteString>
+    getExtensionsMap();
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+
+    /* nullable */
+com.google.protobuf.ByteString getExtensionsOrDefault(
+        java.lang.String key,
+        /* nullable */
+com.google.protobuf.ByteString defaultValue);
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+
+    com.google.protobuf.ByteString getExtensionsOrThrow(
+        java.lang.String key);
+
     public greptime.v1.meta.HeartbeatOuterClass.HeartbeatRequest.NodeWorkloadsCase getNodeWorkloadsCase();
   }
   /**
@@ -642,6 +678,19 @@ public final class HeartbeatOuterClass {
                   input.readMessage(greptime.v1.meta.HeartbeatOuterClass.TopicStat.parser(), extensionRegistry));
               break;
             }
+            case 794: {
+              if (!((mutable_bitField0_ & 0x00000004) != 0)) {
+                extensions_ = com.google.protobuf.MapField.newMapField(
+                    ExtensionsDefaultEntryHolder.defaultEntry);
+                mutable_bitField0_ |= 0x00000004;
+              }
+              com.google.protobuf.MapEntry<java.lang.String, com.google.protobuf.ByteString>
+              extensions__ = input.readMessage(
+                  ExtensionsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+              extensions_.getMutableMap().put(
+                  extensions__.getKey(), extensions__.getValue());
+              break;
+            }
             default: {
               if (!parseUnknownField(
                   input, unknownFields, extensionRegistry, tag)) {
@@ -674,6 +723,18 @@ public final class HeartbeatOuterClass {
       return greptime.v1.meta.HeartbeatOuterClass.internal_static_greptime_v1_meta_HeartbeatRequest_descriptor;
     }
 
+    @SuppressWarnings({"rawtypes"})
+    @java.lang.Override
+    protected com.google.protobuf.MapField internalGetMapField(
+        int number) {
+      switch (number) {
+        case 99:
+          return internalGetExtensions();
+        default:
+          throw new RuntimeException(
+              "Invalid map field number: " + number);
+      }
+    }
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
@@ -1160,6 +1221,87 @@ public final class HeartbeatOuterClass {
       return topicStats_.get(index);
     }
 
+    public static final int EXTENSIONS_FIELD_NUMBER = 99;
+    private static final class ExtensionsDefaultEntryHolder {
+      static final com.google.protobuf.MapEntry<
+          java.lang.String, com.google.protobuf.ByteString> defaultEntry =
+              com.google.protobuf.MapEntry
+              .<java.lang.String, com.google.protobuf.ByteString>newDefaultInstance(
+                  greptime.v1.meta.HeartbeatOuterClass.internal_static_greptime_v1_meta_HeartbeatRequest_ExtensionsEntry_descriptor, 
+                  com.google.protobuf.WireFormat.FieldType.STRING,
+                  "",
+                  com.google.protobuf.WireFormat.FieldType.BYTES,
+                  com.google.protobuf.ByteString.EMPTY);
+    }
+    private com.google.protobuf.MapField<
+        java.lang.String, com.google.protobuf.ByteString> extensions_;
+    private com.google.protobuf.MapField<java.lang.String, com.google.protobuf.ByteString>
+    internalGetExtensions() {
+      if (extensions_ == null) {
+        return com.google.protobuf.MapField.emptyMapField(
+            ExtensionsDefaultEntryHolder.defaultEntry);
+      }
+      return extensions_;
+    }
+
+    public int getExtensionsCount() {
+      return internalGetExtensions().getMap().size();
+    }
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+
+    @java.lang.Override
+    public boolean containsExtensions(
+        java.lang.String key) {
+      if (key == null) { throw new NullPointerException("map key"); }
+      return internalGetExtensions().getMap().containsKey(key);
+    }
+    /**
+     * Use {@link #getExtensionsMap()} instead.
+     */
+    @java.lang.Override
+    @java.lang.Deprecated
+    public java.util.Map<java.lang.String, com.google.protobuf.ByteString> getExtensions() {
+      return getExtensionsMap();
+    }
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+    @java.lang.Override
+
+    public java.util.Map<java.lang.String, com.google.protobuf.ByteString> getExtensionsMap() {
+      return internalGetExtensions().getMap();
+    }
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+    @java.lang.Override
+
+    public com.google.protobuf.ByteString getExtensionsOrDefault(
+        java.lang.String key,
+        com.google.protobuf.ByteString defaultValue) {
+      if (key == null) { throw new NullPointerException("map key"); }
+      java.util.Map<java.lang.String, com.google.protobuf.ByteString> map =
+          internalGetExtensions().getMap();
+      return map.containsKey(key) ? map.get(key) : defaultValue;
+    }
+    /**
+     * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+     */
+    @java.lang.Override
+
+    public com.google.protobuf.ByteString getExtensionsOrThrow(
+        java.lang.String key) {
+      if (key == null) { throw new NullPointerException("map key"); }
+      java.util.Map<java.lang.String, com.google.protobuf.ByteString> map =
+          internalGetExtensions().getMap();
+      if (!map.containsKey(key)) {
+        throw new java.lang.IllegalArgumentException();
+      }
+      return map.get(key);
+    }
+
     private byte memoizedIsInitialized = -1;
     @java.lang.Override
     public final boolean isInitialized() {
@@ -1213,6 +1355,12 @@ public final class HeartbeatOuterClass {
       for (int i = 0; i < topicStats_.size(); i++) {
         output.writeMessage(13, topicStats_.get(i));
       }
+      com.google.protobuf.GeneratedMessageV3
+        .serializeStringMapTo(
+          output,
+          internalGetExtensions(),
+          ExtensionsDefaultEntryHolder.defaultEntry,
+          99);
       unknownFields.writeTo(output);
     }
 
@@ -1274,6 +1422,16 @@ public final class HeartbeatOuterClass {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(13, topicStats_.get(i));
       }
+      for (java.util.Map.Entry<java.lang.String, com.google.protobuf.ByteString> entry
+           : internalGetExtensions().getMap().entrySet()) {
+        com.google.protobuf.MapEntry<java.lang.String, com.google.protobuf.ByteString>
+        extensions__ = ExtensionsDefaultEntryHolder.defaultEntry.newBuilderForType()
+            .setKey(entry.getKey())
+            .setValue(entry.getValue())
+            .build();
+        size += com.google.protobuf.CodedOutputStream
+            .computeMessageSize(99, extensions__);
+      }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
       return size;
@@ -1327,6 +1485,8 @@ public final class HeartbeatOuterClass {
       }
       if (!getTopicStatsList()
           .equals(other.getTopicStatsList())) return false;
+      if (!internalGetExtensions().equals(
+          other.internalGetExtensions())) return false;
       if (!getNodeWorkloadsCase().equals(other.getNodeWorkloadsCase())) return false;
       switch (nodeWorkloadsCase_) {
         case 10:
@@ -1393,6 +1553,10 @@ public final class HeartbeatOuterClass {
         hash = (37 * hash) + TOPIC_STATS_FIELD_NUMBER;
         hash = (53 * hash) + getTopicStatsList().hashCode();
       }
+      if (!internalGetExtensions().getMap().isEmpty()) {
+        hash = (37 * hash) + EXTENSIONS_FIELD_NUMBER;
+        hash = (53 * hash) + internalGetExtensions().hashCode();
+      }
       switch (nodeWorkloadsCase_) {
         case 10:
           hash = (37 * hash) + DATANODE_FIELD_NUMBER;
@@ -1516,6 +1680,28 @@ public final class HeartbeatOuterClass {
         return greptime.v1.meta.HeartbeatOuterClass.internal_static_greptime_v1_meta_HeartbeatRequest_descriptor;
       }
 
+      @SuppressWarnings({"rawtypes"})
+      protected com.google.protobuf.MapField internalGetMapField(
+          int number) {
+        switch (number) {
+          case 99:
+            return internalGetExtensions();
+          default:
+            throw new RuntimeException(
+                "Invalid map field number: " + number);
+        }
+      }
+      @SuppressWarnings({"rawtypes"})
+      protected com.google.protobuf.MapField internalGetMutableMapField(
+          int number) {
+        switch (number) {
+          case 99:
+            return internalGetMutableExtensions();
+          default:
+            throw new RuntimeException(
+                "Invalid map field number: " + number);
+        }
+      }
       @java.lang.Override
       protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
@@ -1596,6 +1782,7 @@ public final class HeartbeatOuterClass {
         } else {
           topicStatsBuilder_.clear();
         }
+        internalGetMutableExtensions().clear();
         nodeWorkloadsCase_ = 0;
         nodeWorkloads_ = null;
         return this;
@@ -1696,6 +1883,8 @@ public final class HeartbeatOuterClass {
         } else {
           result.topicStats_ = topicStatsBuilder_.build();
         }
+        result.extensions_ = internalGetExtensions();
+        result.extensions_.makeImmutable();
         result.nodeWorkloadsCase_ = nodeWorkloadsCase_;
         onBuilt();
         return result;
@@ -1821,6 +2010,8 @@ public final class HeartbeatOuterClass {
             }
           }
         }
+        internalGetMutableExtensions().mergeFrom(
+            other.internalGetExtensions());
         switch (other.getNodeWorkloadsCase()) {
           case DATANODE: {
             mergeDatanode(other.getDatanode());
@@ -3840,6 +4031,137 @@ public final class HeartbeatOuterClass {
         }
         return topicStatsBuilder_;
       }
+
+      private com.google.protobuf.MapField<
+          java.lang.String, com.google.protobuf.ByteString> extensions_;
+      private com.google.protobuf.MapField<java.lang.String, com.google.protobuf.ByteString>
+      internalGetExtensions() {
+        if (extensions_ == null) {
+          return com.google.protobuf.MapField.emptyMapField(
+              ExtensionsDefaultEntryHolder.defaultEntry);
+        }
+        return extensions_;
+      }
+      private com.google.protobuf.MapField<java.lang.String, com.google.protobuf.ByteString>
+      internalGetMutableExtensions() {
+        onChanged();;
+        if (extensions_ == null) {
+          extensions_ = com.google.protobuf.MapField.newMapField(
+              ExtensionsDefaultEntryHolder.defaultEntry);
+        }
+        if (!extensions_.isMutable()) {
+          extensions_ = extensions_.copy();
+        }
+        return extensions_;
+      }
+
+      public int getExtensionsCount() {
+        return internalGetExtensions().getMap().size();
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+
+      @java.lang.Override
+      public boolean containsExtensions(
+          java.lang.String key) {
+        if (key == null) { throw new NullPointerException("map key"); }
+        return internalGetExtensions().getMap().containsKey(key);
+      }
+      /**
+       * Use {@link #getExtensionsMap()} instead.
+       */
+      @java.lang.Override
+      @java.lang.Deprecated
+      public java.util.Map<java.lang.String, com.google.protobuf.ByteString> getExtensions() {
+        return getExtensionsMap();
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+      @java.lang.Override
+
+      public java.util.Map<java.lang.String, com.google.protobuf.ByteString> getExtensionsMap() {
+        return internalGetExtensions().getMap();
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+      @java.lang.Override
+
+      public com.google.protobuf.ByteString getExtensionsOrDefault(
+          java.lang.String key,
+          com.google.protobuf.ByteString defaultValue) {
+        if (key == null) { throw new NullPointerException("map key"); }
+        java.util.Map<java.lang.String, com.google.protobuf.ByteString> map =
+            internalGetExtensions().getMap();
+        return map.containsKey(key) ? map.get(key) : defaultValue;
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+      @java.lang.Override
+
+      public com.google.protobuf.ByteString getExtensionsOrThrow(
+          java.lang.String key) {
+        if (key == null) { throw new NullPointerException("map key"); }
+        java.util.Map<java.lang.String, com.google.protobuf.ByteString> map =
+            internalGetExtensions().getMap();
+        if (!map.containsKey(key)) {
+          throw new java.lang.IllegalArgumentException();
+        }
+        return map.get(key);
+      }
+
+      public Builder clearExtensions() {
+        internalGetMutableExtensions().getMutableMap()
+            .clear();
+        return this;
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+
+      public Builder removeExtensions(
+          java.lang.String key) {
+        if (key == null) { throw new NullPointerException("map key"); }
+        internalGetMutableExtensions().getMutableMap()
+            .remove(key);
+        return this;
+      }
+      /**
+       * Use alternate mutation accessors instead.
+       */
+      @java.lang.Deprecated
+      public java.util.Map<java.lang.String, com.google.protobuf.ByteString>
+      getMutableExtensions() {
+        return internalGetMutableExtensions().getMutableMap();
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+      public Builder putExtensions(
+          java.lang.String key,
+          com.google.protobuf.ByteString value) {
+        if (key == null) { throw new NullPointerException("map key"); }
+        if (value == null) {
+  throw new NullPointerException("map value");
+}
+
+        internalGetMutableExtensions().getMutableMap()
+            .put(key, value);
+        return this;
+      }
+      /**
+       * <code>map&lt;string, bytes&gt; extensions = 99;</code>
+       */
+
+      public Builder putAllExtensions(
+          java.util.Map<java.lang.String, com.google.protobuf.ByteString> values) {
+        internalGetMutableExtensions().getMutableMap()
+            .putAll(values);
+        return this;
+      }
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -16164,6 +16486,11 @@ com.google.protobuf.ByteString defaultValue);
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_meta_HeartbeatRequest_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_greptime_v1_meta_HeartbeatRequest_ExtensionsEntry_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_greptime_v1_meta_HeartbeatRequest_ExtensionsEntry_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_meta_DatanodeWorkloads_descriptor;
   private static final 
@@ -16260,7 +16587,7 @@ com.google.protobuf.ByteString defaultValue);
     java.lang.String[] descriptorData = {
       "\n greptime/v1/meta/heartbeat.proto\022\020grep" +
       "time.v1.meta\032\035greptime/v1/meta/common.pr" +
-      "oto\"\213\005\n\020HeartbeatRequest\022/\n\006header\030\001 \001(\013" +
+      "oto\"\206\006\n\020HeartbeatRequest\022/\n\006header\030\001 \001(\013" +
       "2\037.greptime.v1.meta.RequestHeader\022$\n\004pee" +
       "r\030\002 \001(\0132\026.greptime.v1.meta.Peer\0227\n\017repor" +
       "t_interval\030\003 \001(\0132\036.greptime.v1.meta.Time" +
@@ -16275,59 +16602,62 @@ com.google.protobuf.ByteString defaultValue);
       "rontend\030\013 \001(\0132#.greptime.v1.meta.Fronten" +
       "dWorkloadsH\000\0227\n\010flownode\030\014 \001(\0132#.greptim" +
       "e.v1.meta.FlownodeWorkloadsH\000\0220\n\013topic_s" +
-      "tats\030\r \003(\0132\033.greptime.v1.meta.TopicStatB" +
-      "\020\n\016node_workloads\"\"\n\021DatanodeWorkloads\022\r" +
-      "\n\005types\030\001 \003(\005\"\"\n\021FrontendWorkloads\022\r\n\005ty" +
-      "pes\030\001 \003(\005\"\"\n\021FlownodeWorkloads\022\r\n\005types\030" +
-      "\001 \003(\005\"j\n\010NodeInfo\022\017\n\007version\030\001 \001(\t\022\022\n\ngi" +
-      "t_commit\030\002 \001(\t\022\025\n\rstart_time_ms\030\003 \001(\004\022\014\n" +
-      "\004cpus\030\004 \001(\r\022\024\n\014memory_bytes\030\005 \001(\004\"\207\002\n\nRe" +
-      "gionStat\022\021\n\tregion_id\030\001 \001(\004\022\014\n\004rcus\030\002 \001(" +
-      "\003\022\014\n\004wcus\030\003 \001(\003\022\031\n\021approximate_bytes\030\004 \001" +
-      "(\003\022\016\n\006engine\030\006 \001(\t\022*\n\004role\030\007 \001(\0162\034.grept" +
-      "ime.v1.meta.RegionRole\022@\n\nextensions\030c \003" +
-      "(\0132,.greptime.v1.meta.RegionStat.Extensi" +
-      "onsEntry\0321\n\017ExtensionsEntry\022\013\n\003key\030\001 \001(\t" +
-      "\022\r\n\005value\030\002 \001(\014:\0028\001\"a\n\tTopicStat\022\022\n\ntopi" +
-      "c_name\030\001 \001(\t\022\023\n\013record_size\030\002 \001(\004\022\022\n\nrec" +
-      "ord_num\030\003 \001(\004\022\027\n\017latest_entry_id\030\004 \001(\004\"\227" +
-      "\002\n\010FlowStat\022D\n\016flow_stat_size\030\001 \003(\0132,.gr" +
-      "eptime.v1.meta.FlowStat.FlowStatSizeEntr" +
-      "y\022T\n\027flow_last_exec_time_map\030\002 \003(\01323.gre" +
-      "ptime.v1.meta.FlowStat.FlowLastExecTimeM" +
-      "apEntry\0323\n\021FlowStatSizeEntry\022\013\n\003key\030\001 \001(" +
-      "\r\022\r\n\005value\030\002 \001(\004:\0028\001\032:\n\030FlowLastExecTime" +
-      "MapEntry\022\013\n\003key\030\001 \001(\r\022\r\n\005value\030\002 \001(\003:\0028\001" +
-      "\"\265\001\n\021HeartbeatResponse\0220\n\006header\030\001 \001(\0132 " +
-      ".greptime.v1.meta.ResponseHeader\0229\n\017mail" +
-      "box_message\030\002 \001(\0132 .greptime.v1.meta.Mai" +
-      "lboxMessage\0223\n\014region_lease\030\003 \001(\0132\035.grep" +
-      "time.v1.meta.RegionLease\"\306\001\n\rGrantedRegi" +
-      "on\022\021\n\tregion_id\030\001 \001(\004\022*\n\004role\030\002 \001(\0162\034.gr" +
-      "eptime.v1.meta.RegionRole\022C\n\nextensions\030" +
-      "c \003(\0132/.greptime.v1.meta.GrantedRegion.E" +
-      "xtensionsEntry\0321\n\017ExtensionsEntry\022\013\n\003key" +
-      "\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\222\001\n\013RegionLeas" +
-      "e\0220\n\007regions\030\001 \003(\0132\037.greptime.v1.meta.Gr" +
-      "antedRegion\022\034\n\024duration_since_epoch\030\002 \001(" +
-      "\004\022\025\n\rlease_seconds\030\003 \001(\004\022\034\n\024closeable_re" +
-      "gion_ids\030\004 \003(\004\"C\n\020AskLeaderRequest\022/\n\006he" +
-      "ader\030\001 \001(\0132\037.greptime.v1.meta.RequestHea" +
-      "der\"m\n\021AskLeaderResponse\0220\n\006header\030\001 \001(\013" +
-      "2 .greptime.v1.meta.ResponseHeader\022&\n\006le" +
-      "ader\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n\016Ma" +
-      "ilboxMessage\022\n\n\002id\030\001 \001(\004\022\017\n\007subject\030\002 \001(" +
-      "\t\022\014\n\004from\030\003 \001(\t\022\n\n\002to\030\004 \001(\t\022\030\n\020timestamp" +
-      "_millis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007payload" +
-      "*=\n\nRegionRole\022\n\n\006Leader\020\000\022\014\n\010Follower\020\001" +
-      "\022\025\n\021DowngradingLeader\020\0022\277\001\n\tHeartbeat\022Z\n" +
-      "\tHeartbeat\022\".greptime.v1.meta.HeartbeatR" +
-      "equest\032#.greptime.v1.meta.HeartbeatRespo" +
-      "nse\"\000(\0010\001\022V\n\tAskLeader\022\".greptime.v1.met" +
-      "a.AskLeaderRequest\032#.greptime.v1.meta.As" +
-      "kLeaderResponse\"\000B<Z:github.com/Greptime" +
-      "Team/greptime-proto/go/greptime/v1/metab" +
-      "\006proto3"
+      "tats\030\r \003(\0132\033.greptime.v1.meta.TopicStat\022" +
+      "F\n\nextensions\030c \003(\01322.greptime.v1.meta.H" +
+      "eartbeatRequest.ExtensionsEntry\0321\n\017Exten" +
+      "sionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\002" +
+      "8\001B\020\n\016node_workloads\"\"\n\021DatanodeWorkload" +
+      "s\022\r\n\005types\030\001 \003(\005\"\"\n\021FrontendWorkloads\022\r\n" +
+      "\005types\030\001 \003(\005\"\"\n\021FlownodeWorkloads\022\r\n\005typ" +
+      "es\030\001 \003(\005\"j\n\010NodeInfo\022\017\n\007version\030\001 \001(\t\022\022\n" +
+      "\ngit_commit\030\002 \001(\t\022\025\n\rstart_time_ms\030\003 \001(\004" +
+      "\022\014\n\004cpus\030\004 \001(\r\022\024\n\014memory_bytes\030\005 \001(\004\"\207\002\n" +
+      "\nRegionStat\022\021\n\tregion_id\030\001 \001(\004\022\014\n\004rcus\030\002" +
+      " \001(\003\022\014\n\004wcus\030\003 \001(\003\022\031\n\021approximate_bytes\030" +
+      "\004 \001(\003\022\016\n\006engine\030\006 \001(\t\022*\n\004role\030\007 \001(\0162\034.gr" +
+      "eptime.v1.meta.RegionRole\022@\n\nextensions\030" +
+      "c \003(\0132,.greptime.v1.meta.RegionStat.Exte" +
+      "nsionsEntry\0321\n\017ExtensionsEntry\022\013\n\003key\030\001 " +
+      "\001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"a\n\tTopicStat\022\022\n\nt" +
+      "opic_name\030\001 \001(\t\022\023\n\013record_size\030\002 \001(\004\022\022\n\n" +
+      "record_num\030\003 \001(\004\022\027\n\017latest_entry_id\030\004 \001(" +
+      "\004\"\227\002\n\010FlowStat\022D\n\016flow_stat_size\030\001 \003(\0132," +
+      ".greptime.v1.meta.FlowStat.FlowStatSizeE" +
+      "ntry\022T\n\027flow_last_exec_time_map\030\002 \003(\01323." +
+      "greptime.v1.meta.FlowStat.FlowLastExecTi" +
+      "meMapEntry\0323\n\021FlowStatSizeEntry\022\013\n\003key\030\001" +
+      " \001(\r\022\r\n\005value\030\002 \001(\004:\0028\001\032:\n\030FlowLastExecT" +
+      "imeMapEntry\022\013\n\003key\030\001 \001(\r\022\r\n\005value\030\002 \001(\003:" +
+      "\0028\001\"\265\001\n\021HeartbeatResponse\0220\n\006header\030\001 \001(" +
+      "\0132 .greptime.v1.meta.ResponseHeader\0229\n\017m" +
+      "ailbox_message\030\002 \001(\0132 .greptime.v1.meta." +
+      "MailboxMessage\0223\n\014region_lease\030\003 \001(\0132\035.g" +
+      "reptime.v1.meta.RegionLease\"\306\001\n\rGrantedR" +
+      "egion\022\021\n\tregion_id\030\001 \001(\004\022*\n\004role\030\002 \001(\0162\034" +
+      ".greptime.v1.meta.RegionRole\022C\n\nextensio" +
+      "ns\030c \003(\0132/.greptime.v1.meta.GrantedRegio" +
+      "n.ExtensionsEntry\0321\n\017ExtensionsEntry\022\013\n\003" +
+      "key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\222\001\n\013RegionL" +
+      "ease\0220\n\007regions\030\001 \003(\0132\037.greptime.v1.meta" +
+      ".GrantedRegion\022\034\n\024duration_since_epoch\030\002" +
+      " \001(\004\022\025\n\rlease_seconds\030\003 \001(\004\022\034\n\024closeable" +
+      "_region_ids\030\004 \003(\004\"C\n\020AskLeaderRequest\022/\n" +
+      "\006header\030\001 \001(\0132\037.greptime.v1.meta.Request" +
+      "Header\"m\n\021AskLeaderResponse\0220\n\006header\030\001 " +
+      "\001(\0132 .greptime.v1.meta.ResponseHeader\022&\n" +
+      "\006leader\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n" +
+      "\016MailboxMessage\022\n\n\002id\030\001 \001(\004\022\017\n\007subject\030\002" +
+      " \001(\t\022\014\n\004from\030\003 \001(\t\022\n\n\002to\030\004 \001(\t\022\030\n\020timest" +
+      "amp_millis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007payl" +
+      "oad*=\n\nRegionRole\022\n\n\006Leader\020\000\022\014\n\010Followe" +
+      "r\020\001\022\025\n\021DowngradingLeader\020\0022\277\001\n\tHeartbeat" +
+      "\022Z\n\tHeartbeat\022\".greptime.v1.meta.Heartbe" +
+      "atRequest\032#.greptime.v1.meta.HeartbeatRe" +
+      "sponse\"\000(\0010\001\022V\n\tAskLeader\022\".greptime.v1." +
+      "meta.AskLeaderRequest\032#.greptime.v1.meta" +
+      ".AskLeaderResponse\"\000B<Z:github.com/Grept" +
+      "imeTeam/greptime-proto/go/greptime/v1/me" +
+      "tab\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -16339,7 +16669,13 @@ com.google.protobuf.ByteString defaultValue);
     internal_static_greptime_v1_meta_HeartbeatRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_meta_HeartbeatRequest_descriptor,
-        new java.lang.String[] { "Header", "Peer", "ReportInterval", "RegionStats", "MailboxMessage", "DurationSinceEpoch", "NodeEpoch", "Info", "FlowStat", "Datanode", "Frontend", "Flownode", "TopicStats", "NodeWorkloads", });
+        new java.lang.String[] { "Header", "Peer", "ReportInterval", "RegionStats", "MailboxMessage", "DurationSinceEpoch", "NodeEpoch", "Info", "FlowStat", "Datanode", "Frontend", "Flownode", "TopicStats", "Extensions", "NodeWorkloads", });
+    internal_static_greptime_v1_meta_HeartbeatRequest_ExtensionsEntry_descriptor =
+      internal_static_greptime_v1_meta_HeartbeatRequest_descriptor.getNestedTypes().get(0);
+    internal_static_greptime_v1_meta_HeartbeatRequest_ExtensionsEntry_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_greptime_v1_meta_HeartbeatRequest_ExtensionsEntry_descriptor,
+        new java.lang.String[] { "Key", "Value", });
     internal_static_greptime_v1_meta_DatanodeWorkloads_descriptor =
       getDescriptor().getMessageTypes().get(1);
     internal_static_greptime_v1_meta_DatanodeWorkloads_fieldAccessorTable = new
diff --git a/proto/greptime/v1/meta/heartbeat.proto b/proto/greptime/v1/meta/heartbeat.proto
index 840ec2f..44b9396 100644
--- a/proto/greptime/v1/meta/heartbeat.proto
+++ b/proto/greptime/v1/meta/heartbeat.proto
@@ -56,6 +56,7 @@ message HeartbeatRequest {
   }
   // The topic stats of the datanode.
   repeated TopicStat topic_stats = 13;
+  map<string, bytes> extensions = 99;
 }
 
 /// The workload types of the datanode.