diff --git a/c++/greptime/v1/meta/heartbeat.pb.cc b/c++/greptime/v1/meta/heartbeat.pb.cc
index 151c274a..c308685b 100644
--- a/c++/greptime/v1/meta/heartbeat.pb.cc
+++ b/c++/greptime/v1/meta/heartbeat.pb.cc
@@ -50,6 +50,7 @@ PROTOBUF_CONSTEXPR RegionStat::RegionStat(
   , /*decltype(_impl_.wcus_)*/int64_t{0}
   , /*decltype(_impl_.approximate_bytes_)*/int64_t{0}
   , /*decltype(_impl_.approximate_rows_)*/int64_t{0}
+  , /*decltype(_impl_.role_)*/0
   , /*decltype(_impl_._cached_size_)*/{}} {}
 struct RegionStatDefaultTypeInternal {
   PROTOBUF_CONSTEXPR RegionStatDefaultTypeInternal()
@@ -141,7 +142,7 @@ PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORIT
 }  // namespace v1
 }  // namespace greptime
 static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fmeta_2fheartbeat_2eproto[7];
-static constexpr ::_pb::EnumDescriptor const** file_level_enum_descriptors_greptime_2fv1_2fmeta_2fheartbeat_2eproto = nullptr;
+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) = {
@@ -170,6 +171,7 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets[] P
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::RegionStat, _impl_.approximate_bytes_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::RegionStat, _impl_.approximate_rows_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::RegionStat, _impl_.engine_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::RegionStat, _impl_.role_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::HeartbeatResponse, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -220,11 +222,11 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets[] P
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
   { 0, -1, -1, sizeof(::greptime::v1::meta::HeartbeatRequest)},
   { 13, -1, -1, sizeof(::greptime::v1::meta::RegionStat)},
-  { 25, -1, -1, sizeof(::greptime::v1::meta::HeartbeatResponse)},
-  { 34, -1, -1, sizeof(::greptime::v1::meta::RegionLease)},
-  { 43, -1, -1, sizeof(::greptime::v1::meta::AskLeaderRequest)},
-  { 50, -1, -1, sizeof(::greptime::v1::meta::AskLeaderResponse)},
-  { 58, -1, -1, sizeof(::greptime::v1::meta::MailboxMessage)},
+  { 26, -1, -1, sizeof(::greptime::v1::meta::HeartbeatResponse)},
+  { 35, -1, -1, sizeof(::greptime::v1::meta::RegionLease)},
+  { 44, -1, -1, sizeof(::greptime::v1::meta::AskLeaderRequest)},
+  { 51, -1, -1, sizeof(::greptime::v1::meta::AskLeaderResponse)},
+  { 59, -1, -1, sizeof(::greptime::v1::meta::MailboxMessage)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
@@ -248,38 +250,40 @@ const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fheartbeat_2eproto[]
   "e.v1.meta.RegionStat\0229\n\017mailbox_message\030"
   "\005 \001(\0132 .greptime.v1.meta.MailboxMessage\022"
   "\034\n\024duration_since_epoch\030\006 \001(\004\022\022\n\nnode_ep"
-  "och\030\007 \001(\004\"\200\001\n\nRegionStat\022\021\n\tregion_id\030\001 "
+  "och\030\007 \001(\004\"\254\001\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\021appro"
   "ximate_bytes\030\004 \001(\003\022\030\n\020approximate_rows\030\005"
-  " \001(\003\022\016\n\006engine\030\006 \001(\t\"\265\001\n\021HeartbeatRespon"
-  "se\0220\n\006header\030\001 \001(\0132 .greptime.v1.meta.Re"
-  "sponseHeader\0229\n\017mailbox_message\030\002 \001(\0132 ."
-  "greptime.v1.meta.MailboxMessage\0223\n\014regio"
-  "n_lease\030\003 \001(\0132\035.greptime.v1.meta.RegionL"
-  "ease\"V\n\013RegionLease\022\022\n\nregion_ids\030\001 \003(\004\022"
-  "\034\n\024duration_since_epoch\030\002 \001(\004\022\025\n\rlease_s"
-  "econds\030\003 \001(\004\"C\n\020AskLeaderRequest\022/\n\006head"
-  "er\030\001 \001(\0132\037.greptime.v1.meta.RequestHeade"
-  "r\"m\n\021AskLeaderResponse\0220\n\006header\030\001 \001(\0132 "
-  ".greptime.v1.meta.ResponseHeader\022&\n\006lead"
-  "er\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n\016Mail"
-  "boxMessage\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_m"
-  "illis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007payload2\277"
-  "\001\n\tHeartbeat\022Z\n\tHeartbeat\022\".greptime.v1."
-  "meta.HeartbeatRequest\032#.greptime.v1.meta"
-  ".HeartbeatResponse\"\000(\0010\001\022V\n\tAskLeader\022\"."
-  "greptime.v1.meta.AskLeaderRequest\032#.grep"
-  "time.v1.meta.AskLeaderResponse\"\000B<Z:gith"
-  "ub.com/GreptimeTeam/greptime-proto/go/gr"
-  "eptime/v1/metab\006proto3"
+  " \001(\003\022\016\n\006engine\030\006 \001(\t\022*\n\004role\030\007 \001(\0162\034.gre"
+  "ptime.v1.meta.RegionRole\"\265\001\n\021HeartbeatRe"
+  "sponse\0220\n\006header\030\001 \001(\0132 .greptime.v1.met"
+  "a.ResponseHeader\0229\n\017mailbox_message\030\002 \001("
+  "\0132 .greptime.v1.meta.MailboxMessage\0223\n\014r"
+  "egion_lease\030\003 \001(\0132\035.greptime.v1.meta.Reg"
+  "ionLease\"V\n\013RegionLease\022\022\n\nregion_ids\030\001 "
+  "\003(\004\022\034\n\024duration_since_epoch\030\002 \001(\004\022\025\n\rlea"
+  "se_seconds\030\003 \001(\004\"C\n\020AskLeaderRequest\022/\n\006"
+  "header\030\001 \001(\0132\037.greptime.v1.meta.RequestH"
+  "eader\"m\n\021AskLeaderResponse\0220\n\006header\030\001 \001"
+  "(\0132 .greptime.v1.meta.ResponseHeader\022&\n\006"
+  "leader\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n\016"
+  "MailboxMessage\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\020timesta"
+  "mp_millis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007paylo"
+  "ad*&\n\nRegionRole\022\n\n\006Leader\020\000\022\014\n\010Follower"
+  "\020\0012\277\001\n\tHeartbeat\022Z\n\tHeartbeat\022\".greptime"
+  ".v1.meta.HeartbeatRequest\032#.greptime.v1."
+  "meta.HeartbeatResponse\"\000(\0010\001\022V\n\tAskLeade"
+  "r\022\".greptime.v1.meta.AskLeaderRequest\032#."
+  "greptime.v1.meta.AskLeaderResponse\"\000B<Z:"
+  "github.com/GreptimeTeam/greptime-proto/g"
+  "o/greptime/v1/metab\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, 1382, descriptor_table_protodef_greptime_2fv1_2fmeta_2fheartbeat_2eproto,
+    false, false, 1466, 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, 7,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fheartbeat_2eproto::offsets,
@@ -295,6 +299,20 @@ PROTOBUF_ATTRIBUTE_INIT_PRIORITY2 static ::_pbi::AddDescriptorsRunner dynamic_in
 namespace greptime {
 namespace v1 {
 namespace meta {
+const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* RegionRole_descriptor() {
+  ::PROTOBUF_NAMESPACE_ID::internal::AssignDescriptors(&descriptor_table_greptime_2fv1_2fmeta_2fheartbeat_2eproto);
+  return file_level_enum_descriptors_greptime_2fv1_2fmeta_2fheartbeat_2eproto[0];
+}
+bool RegionRole_IsValid(int value) {
+  switch (value) {
+    case 0:
+    case 1:
+      return true;
+    default:
+      return false;
+  }
+}
+
 
 // ===================================================================
 
@@ -745,6 +763,7 @@ RegionStat::RegionStat(const RegionStat& from)
     , decltype(_impl_.wcus_){}
     , decltype(_impl_.approximate_bytes_){}
     , decltype(_impl_.approximate_rows_){}
+    , decltype(_impl_.role_){}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
@@ -757,8 +776,8 @@ RegionStat::RegionStat(const RegionStat& from)
       _this->GetArenaForAllocation());
   }
   ::memcpy(&_impl_.region_id_, &from._impl_.region_id_,
-    static_cast<size_t>(reinterpret_cast<char*>(&_impl_.approximate_rows_) -
-    reinterpret_cast<char*>(&_impl_.region_id_)) + sizeof(_impl_.approximate_rows_));
+    static_cast<size_t>(reinterpret_cast<char*>(&_impl_.role_) -
+    reinterpret_cast<char*>(&_impl_.region_id_)) + sizeof(_impl_.role_));
   // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.RegionStat)
 }
 
@@ -773,6 +792,7 @@ inline void RegionStat::SharedCtor(
     , decltype(_impl_.wcus_){int64_t{0}}
     , decltype(_impl_.approximate_bytes_){int64_t{0}}
     , decltype(_impl_.approximate_rows_){int64_t{0}}
+    , decltype(_impl_.role_){0}
     , /*decltype(_impl_._cached_size_)*/{}
   };
   _impl_.engine_.InitDefault();
@@ -807,8 +827,8 @@ void RegionStat::Clear() {
 
   _impl_.engine_.ClearToEmpty();
   ::memset(&_impl_.region_id_, 0, static_cast<size_t>(
-      reinterpret_cast<char*>(&_impl_.approximate_rows_) -
-      reinterpret_cast<char*>(&_impl_.region_id_)) + sizeof(_impl_.approximate_rows_));
+      reinterpret_cast<char*>(&_impl_.role_) -
+      reinterpret_cast<char*>(&_impl_.region_id_)) + sizeof(_impl_.role_));
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
@@ -868,6 +888,15 @@ const char* RegionStat::_InternalParse(const char* ptr, ::_pbi::ParseContext* ct
         } else
           goto handle_unusual;
         continue;
+      // .greptime.v1.meta.RegionRole role = 7;
+      case 7:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 56)) {
+          uint64_t val = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+          _internal_set_role(static_cast<::greptime::v1::meta::RegionRole>(val));
+        } else
+          goto handle_unusual;
+        continue;
       default:
         goto handle_unusual;
     }  // switch
@@ -937,6 +966,13 @@ uint8_t* RegionStat::_InternalSerialize(
         6, this->_internal_engine(), target);
   }
 
+  // .greptime.v1.meta.RegionRole role = 7;
+  if (this->_internal_role() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteEnumToArray(
+      7, this->_internal_role(), 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);
@@ -985,6 +1021,12 @@ size_t RegionStat::ByteSizeLong() const {
     total_size += ::_pbi::WireFormatLite::Int64SizePlusOne(this->_internal_approximate_rows());
   }
 
+  // .greptime.v1.meta.RegionRole role = 7;
+  if (this->_internal_role() != 0) {
+    total_size += 1 +
+      ::_pbi::WireFormatLite::EnumSize(this->_internal_role());
+  }
+
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
@@ -1021,6 +1063,9 @@ void RegionStat::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PRO
   if (from._internal_approximate_rows() != 0) {
     _this->_internal_set_approximate_rows(from._internal_approximate_rows());
   }
+  if (from._internal_role() != 0) {
+    _this->_internal_set_role(from._internal_role());
+  }
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
 
@@ -1045,8 +1090,8 @@ void RegionStat::InternalSwap(RegionStat* other) {
       &other->_impl_.engine_, rhs_arena
   );
   ::PROTOBUF_NAMESPACE_ID::internal::memswap<
-      PROTOBUF_FIELD_OFFSET(RegionStat, _impl_.approximate_rows_)
-      + sizeof(RegionStat::_impl_.approximate_rows_)
+      PROTOBUF_FIELD_OFFSET(RegionStat, _impl_.role_)
+      + sizeof(RegionStat::_impl_.role_)
       - PROTOBUF_FIELD_OFFSET(RegionStat, _impl_.region_id_)>(
           reinterpret_cast<char*>(&_impl_.region_id_),
           reinterpret_cast<char*>(&other->_impl_.region_id_));
diff --git a/c++/greptime/v1/meta/heartbeat.pb.h b/c++/greptime/v1/meta/heartbeat.pb.h
index f7b297e9..d096bd45 100644
--- a/c++/greptime/v1/meta/heartbeat.pb.h
+++ b/c++/greptime/v1/meta/heartbeat.pb.h
@@ -29,6 +29,7 @@
 #include <google/protobuf/message.h>
 #include <google/protobuf/repeated_field.h>  // IWYU pragma: export
 #include <google/protobuf/extension_set.h>  // IWYU pragma: export
+#include <google/protobuf/generated_enum_reflection.h>
 #include <google/protobuf/unknown_field_set.h>
 #include "greptime/v1/meta/common.pb.h"
 // @@protoc_insertion_point(includes)
@@ -85,6 +86,31 @@ namespace greptime {
 namespace v1 {
 namespace meta {
 
+enum RegionRole : int {
+  Leader = 0,
+  Follower = 1,
+  RegionRole_INT_MIN_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::min(),
+  RegionRole_INT_MAX_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::max()
+};
+bool RegionRole_IsValid(int value);
+constexpr RegionRole RegionRole_MIN = Leader;
+constexpr RegionRole RegionRole_MAX = Follower;
+constexpr int RegionRole_ARRAYSIZE = RegionRole_MAX + 1;
+
+const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* RegionRole_descriptor();
+template<typename T>
+inline const std::string& RegionRole_Name(T enum_t_value) {
+  static_assert(::std::is_same<T, RegionRole>::value ||
+    ::std::is_integral<T>::value,
+    "Incorrect type passed to function RegionRole_Name.");
+  return ::PROTOBUF_NAMESPACE_ID::internal::NameOfEnum(
+    RegionRole_descriptor(), enum_t_value);
+}
+inline bool RegionRole_Parse(
+    ::PROTOBUF_NAMESPACE_ID::ConstStringParam name, RegionRole* value) {
+  return ::PROTOBUF_NAMESPACE_ID::internal::ParseNamedEnum<RegionRole>(
+    RegionRole_descriptor(), name, value);
+}
 // ===================================================================
 
 class HeartbeatRequest final :
@@ -473,6 +499,7 @@ class RegionStat final :
     kWcusFieldNumber = 3,
     kApproximateBytesFieldNumber = 4,
     kApproximateRowsFieldNumber = 5,
+    kRoleFieldNumber = 7,
   };
   // string engine = 6;
   void clear_engine();
@@ -533,6 +560,15 @@ class RegionStat final :
   void _internal_set_approximate_rows(int64_t value);
   public:
 
+  // .greptime.v1.meta.RegionRole role = 7;
+  void clear_role();
+  ::greptime::v1::meta::RegionRole role() const;
+  void set_role(::greptime::v1::meta::RegionRole value);
+  private:
+  ::greptime::v1::meta::RegionRole _internal_role() const;
+  void _internal_set_role(::greptime::v1::meta::RegionRole value);
+  public:
+
   // @@protoc_insertion_point(class_scope:greptime.v1.meta.RegionStat)
  private:
   class _Internal;
@@ -547,6 +583,7 @@ class RegionStat final :
     int64_t wcus_;
     int64_t approximate_bytes_;
     int64_t approximate_rows_;
+    int role_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
   };
   union { Impl_ _impl_; };
@@ -2101,6 +2138,26 @@ inline void RegionStat::set_allocated_engine(std::string* engine) {
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.RegionStat.engine)
 }
 
+// .greptime.v1.meta.RegionRole role = 7;
+inline void RegionStat::clear_role() {
+  _impl_.role_ = 0;
+}
+inline ::greptime::v1::meta::RegionRole RegionStat::_internal_role() const {
+  return static_cast< ::greptime::v1::meta::RegionRole >(_impl_.role_);
+}
+inline ::greptime::v1::meta::RegionRole RegionStat::role() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.RegionStat.role)
+  return _internal_role();
+}
+inline void RegionStat::_internal_set_role(::greptime::v1::meta::RegionRole value) {
+  
+  _impl_.role_ = value;
+}
+inline void RegionStat::set_role(::greptime::v1::meta::RegionRole value) {
+  _internal_set_role(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.meta.RegionStat.role)
+}
+
 // -------------------------------------------------------------------
 
 // HeartbeatResponse
@@ -3026,6 +3083,16 @@ inline MailboxMessage::PayloadCase MailboxMessage::payload_case() const {
 }  // namespace v1
 }  // namespace greptime
 
+PROTOBUF_NAMESPACE_OPEN
+
+template <> struct is_proto_enum< ::greptime::v1::meta::RegionRole> : ::std::true_type {};
+template <>
+inline const EnumDescriptor* GetEnumDescriptor< ::greptime::v1::meta::RegionRole>() {
+  return ::greptime::v1::meta::RegionRole_descriptor();
+}
+
+PROTOBUF_NAMESPACE_CLOSE
+
 // @@protoc_insertion_point(global_scope)
 
 #include <google/protobuf/port_undef.inc>
diff --git a/go/greptime/v1/meta/heartbeat.pb.go b/go/greptime/v1/meta/heartbeat.pb.go
index b9203f7c..dee4b10e 100644
--- a/go/greptime/v1/meta/heartbeat.pb.go
+++ b/go/greptime/v1/meta/heartbeat.pb.go
@@ -34,6 +34,54 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type RegionRole int32
+
+const (
+	// Writable region(mito2), Readonly region(file).
+	RegionRole_Leader RegionRole = 0
+	// Readonly region.
+	RegionRole_Follower RegionRole = 1
+)
+
+// Enum value maps for RegionRole.
+var (
+	RegionRole_name = map[int32]string{
+		0: "Leader",
+		1: "Follower",
+	}
+	RegionRole_value = map[string]int32{
+		"Leader":   0,
+		"Follower": 1,
+	}
+)
+
+func (x RegionRole) Enum() *RegionRole {
+	p := new(RegionRole)
+	*p = x
+	return p
+}
+
+func (x RegionRole) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (RegionRole) Descriptor() protoreflect.EnumDescriptor {
+	return file_greptime_v1_meta_heartbeat_proto_enumTypes[0].Descriptor()
+}
+
+func (RegionRole) Type() protoreflect.EnumType {
+	return &file_greptime_v1_meta_heartbeat_proto_enumTypes[0]
+}
+
+func (x RegionRole) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use RegionRole.Descriptor instead.
+func (RegionRole) EnumDescriptor() ([]byte, []int) {
+	return file_greptime_v1_meta_heartbeat_proto_rawDescGZIP(), []int{0}
+}
+
 type HeartbeatRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -151,6 +199,8 @@ type RegionStat struct {
 	ApproximateRows int64 `protobuf:"varint,5,opt,name=approximate_rows,json=approximateRows,proto3" json:"approximate_rows,omitempty"`
 	// engine name
 	Engine string `protobuf:"bytes,6,opt,name=engine,proto3" json:"engine,omitempty"`
+	// Region role
+	Role RegionRole `protobuf:"varint,7,opt,name=role,proto3,enum=greptime.v1.meta.RegionRole" json:"role,omitempty"`
 }
 
 func (x *RegionStat) Reset() {
@@ -227,6 +277,13 @@ func (x *RegionStat) GetEngine() string {
 	return ""
 }
 
+func (x *RegionStat) GetRole() RegionRole {
+	if x != nil {
+		return x.Role
+	}
+	return RegionRole_Leader
+}
+
 type HeartbeatResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -602,7 +659,7 @@ var file_greptime_v1_meta_heartbeat_proto_rawDesc = []byte{
 	0x52, 0x12, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x53, 0x69, 0x6e, 0x63, 0x65, 0x45,
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-	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,
+	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 (
@@ -691,41 +754,44 @@ func file_greptime_v1_meta_heartbeat_proto_rawDescGZIP() []byte {
 	return file_greptime_v1_meta_heartbeat_proto_rawDescData
 }
 
+var file_greptime_v1_meta_heartbeat_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_greptime_v1_meta_heartbeat_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_greptime_v1_meta_heartbeat_proto_goTypes = []interface{}{
-	(*HeartbeatRequest)(nil),  // 0: greptime.v1.meta.HeartbeatRequest
-	(*RegionStat)(nil),        // 1: greptime.v1.meta.RegionStat
-	(*HeartbeatResponse)(nil), // 2: greptime.v1.meta.HeartbeatResponse
-	(*RegionLease)(nil),       // 3: greptime.v1.meta.RegionLease
-	(*AskLeaderRequest)(nil),  // 4: greptime.v1.meta.AskLeaderRequest
-	(*AskLeaderResponse)(nil), // 5: greptime.v1.meta.AskLeaderResponse
-	(*MailboxMessage)(nil),    // 6: greptime.v1.meta.MailboxMessage
-	(*RequestHeader)(nil),     // 7: greptime.v1.meta.RequestHeader
-	(*Peer)(nil),              // 8: greptime.v1.meta.Peer
-	(*TimeInterval)(nil),      // 9: greptime.v1.meta.TimeInterval
-	(*ResponseHeader)(nil),    // 10: greptime.v1.meta.ResponseHeader
+	(RegionRole)(0),           // 0: greptime.v1.meta.RegionRole
+	(*HeartbeatRequest)(nil),  // 1: greptime.v1.meta.HeartbeatRequest
+	(*RegionStat)(nil),        // 2: greptime.v1.meta.RegionStat
+	(*HeartbeatResponse)(nil), // 3: greptime.v1.meta.HeartbeatResponse
+	(*RegionLease)(nil),       // 4: greptime.v1.meta.RegionLease
+	(*AskLeaderRequest)(nil),  // 5: greptime.v1.meta.AskLeaderRequest
+	(*AskLeaderResponse)(nil), // 6: greptime.v1.meta.AskLeaderResponse
+	(*MailboxMessage)(nil),    // 7: greptime.v1.meta.MailboxMessage
+	(*RequestHeader)(nil),     // 8: greptime.v1.meta.RequestHeader
+	(*Peer)(nil),              // 9: greptime.v1.meta.Peer
+	(*TimeInterval)(nil),      // 10: greptime.v1.meta.TimeInterval
+	(*ResponseHeader)(nil),    // 11: greptime.v1.meta.ResponseHeader
 }
 var file_greptime_v1_meta_heartbeat_proto_depIdxs = []int32{
-	7,  // 0: greptime.v1.meta.HeartbeatRequest.header:type_name -> greptime.v1.meta.RequestHeader
-	8,  // 1: greptime.v1.meta.HeartbeatRequest.peer:type_name -> greptime.v1.meta.Peer
-	9,  // 2: greptime.v1.meta.HeartbeatRequest.report_interval:type_name -> greptime.v1.meta.TimeInterval
-	1,  // 3: greptime.v1.meta.HeartbeatRequest.region_stats:type_name -> greptime.v1.meta.RegionStat
-	6,  // 4: greptime.v1.meta.HeartbeatRequest.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
-	10, // 5: greptime.v1.meta.HeartbeatResponse.header:type_name -> greptime.v1.meta.ResponseHeader
-	6,  // 6: greptime.v1.meta.HeartbeatResponse.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
-	3,  // 7: greptime.v1.meta.HeartbeatResponse.region_lease:type_name -> greptime.v1.meta.RegionLease
-	7,  // 8: greptime.v1.meta.AskLeaderRequest.header:type_name -> greptime.v1.meta.RequestHeader
-	10, // 9: greptime.v1.meta.AskLeaderResponse.header:type_name -> greptime.v1.meta.ResponseHeader
-	8,  // 10: greptime.v1.meta.AskLeaderResponse.leader:type_name -> greptime.v1.meta.Peer
-	0,  // 11: greptime.v1.meta.Heartbeat.Heartbeat:input_type -> greptime.v1.meta.HeartbeatRequest
-	4,  // 12: greptime.v1.meta.Heartbeat.AskLeader:input_type -> greptime.v1.meta.AskLeaderRequest
-	2,  // 13: greptime.v1.meta.Heartbeat.Heartbeat:output_type -> greptime.v1.meta.HeartbeatResponse
-	5,  // 14: greptime.v1.meta.Heartbeat.AskLeader:output_type -> greptime.v1.meta.AskLeaderResponse
-	13, // [13:15] is the sub-list for method output_type
-	11, // [11:13] is the sub-list for method input_type
-	11, // [11:11] is the sub-list for extension type_name
-	11, // [11:11] is the sub-list for extension extendee
-	0,  // [0:11] is the sub-list for field type_name
+	8,  // 0: greptime.v1.meta.HeartbeatRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	9,  // 1: greptime.v1.meta.HeartbeatRequest.peer:type_name -> greptime.v1.meta.Peer
+	10, // 2: greptime.v1.meta.HeartbeatRequest.report_interval:type_name -> greptime.v1.meta.TimeInterval
+	2,  // 3: greptime.v1.meta.HeartbeatRequest.region_stats:type_name -> greptime.v1.meta.RegionStat
+	7,  // 4: greptime.v1.meta.HeartbeatRequest.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
+	0,  // 5: greptime.v1.meta.RegionStat.role:type_name -> greptime.v1.meta.RegionRole
+	11, // 6: greptime.v1.meta.HeartbeatResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	7,  // 7: greptime.v1.meta.HeartbeatResponse.mailbox_message:type_name -> greptime.v1.meta.MailboxMessage
+	4,  // 8: greptime.v1.meta.HeartbeatResponse.region_lease:type_name -> greptime.v1.meta.RegionLease
+	8,  // 9: greptime.v1.meta.AskLeaderRequest.header:type_name -> greptime.v1.meta.RequestHeader
+	11, // 10: greptime.v1.meta.AskLeaderResponse.header:type_name -> greptime.v1.meta.ResponseHeader
+	9,  // 11: greptime.v1.meta.AskLeaderResponse.leader:type_name -> greptime.v1.meta.Peer
+	1,  // 12: greptime.v1.meta.Heartbeat.Heartbeat:input_type -> greptime.v1.meta.HeartbeatRequest
+	5,  // 13: greptime.v1.meta.Heartbeat.AskLeader:input_type -> greptime.v1.meta.AskLeaderRequest
+	3,  // 14: greptime.v1.meta.Heartbeat.Heartbeat:output_type -> greptime.v1.meta.HeartbeatResponse
+	6,  // 15: greptime.v1.meta.Heartbeat.AskLeader:output_type -> greptime.v1.meta.AskLeaderResponse
+	14, // [14:16] is the sub-list for method output_type
+	12, // [12:14] is the sub-list for method input_type
+	12, // [12:12] is the sub-list for extension type_name
+	12, // [12:12] is the sub-list for extension extendee
+	0,  // [0:12] is the sub-list for field type_name
 }
 
 func init() { file_greptime_v1_meta_heartbeat_proto_init() }
@@ -828,13 +894,14 @@ func file_greptime_v1_meta_heartbeat_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_meta_heartbeat_proto_rawDesc,
-			NumEnums:      0,
+			NumEnums:      1,
 			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
 		GoTypes:           file_greptime_v1_meta_heartbeat_proto_goTypes,
 		DependencyIndexes: file_greptime_v1_meta_heartbeat_proto_depIdxs,
+		EnumInfos:         file_greptime_v1_meta_heartbeat_proto_enumTypes,
 		MessageInfos:      file_greptime_v1_meta_heartbeat_proto_msgTypes,
 	}.Build()
 	File_greptime_v1_meta_heartbeat_proto = out.File
diff --git a/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java b/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
index c07a7d51..89384123 100644
--- a/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
+++ b/java/src/main/java/greptime/v1/meta/HeartbeatOuterClass.java
@@ -14,6 +14,130 @@ public static void registerAllExtensions(
     registerAllExtensions(
         (com.google.protobuf.ExtensionRegistryLite) registry);
   }
+  /**
+   * Protobuf enum {@code greptime.v1.meta.RegionRole}
+   */
+  public enum RegionRole
+      implements com.google.protobuf.ProtocolMessageEnum {
+    /**
+     * <pre>
+     * Writable region(mito2), Readonly region(file).
+     * </pre>
+     *
+     * <code>Leader = 0;</code>
+     */
+    Leader(0),
+    /**
+     * <pre>
+     * Readonly region.
+     * </pre>
+     *
+     * <code>Follower = 1;</code>
+     */
+    Follower(1),
+    UNRECOGNIZED(-1),
+    ;
+
+    /**
+     * <pre>
+     * Writable region(mito2), Readonly region(file).
+     * </pre>
+     *
+     * <code>Leader = 0;</code>
+     */
+    public static final int Leader_VALUE = 0;
+    /**
+     * <pre>
+     * Readonly region.
+     * </pre>
+     *
+     * <code>Follower = 1;</code>
+     */
+    public static final int Follower_VALUE = 1;
+
+
+    public final int getNumber() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalArgumentException(
+            "Can't get the number of an unknown enum value.");
+      }
+      return value;
+    }
+
+    /**
+     * @param value The numeric wire value of the corresponding enum entry.
+     * @return The enum associated with the given numeric wire value.
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static RegionRole valueOf(int value) {
+      return forNumber(value);
+    }
+
+    /**
+     * @param value The numeric wire value of the corresponding enum entry.
+     * @return The enum associated with the given numeric wire value.
+     */
+    public static RegionRole forNumber(int value) {
+      switch (value) {
+        case 0: return Leader;
+        case 1: return Follower;
+        default: return null;
+      }
+    }
+
+    public static com.google.protobuf.Internal.EnumLiteMap<RegionRole>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        RegionRole> internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<RegionRole>() {
+            public RegionRole findValueByNumber(int number) {
+              return RegionRole.forNumber(number);
+            }
+          };
+
+    public final com.google.protobuf.Descriptors.EnumValueDescriptor
+        getValueDescriptor() {
+      if (this == UNRECOGNIZED) {
+        throw new java.lang.IllegalStateException(
+            "Can't get the descriptor of an unrecognized enum value.");
+      }
+      return getDescriptor().getValues().get(ordinal());
+    }
+    public final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptorForType() {
+      return getDescriptor();
+    }
+    public static final com.google.protobuf.Descriptors.EnumDescriptor
+        getDescriptor() {
+      return greptime.v1.meta.HeartbeatOuterClass.getDescriptor().getEnumTypes().get(0);
+    }
+
+    private static final RegionRole[] VALUES = values();
+
+    public static RegionRole valueOf(
+        com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
+      if (desc.getType() != getDescriptor()) {
+        throw new java.lang.IllegalArgumentException(
+          "EnumValueDescriptor is not for this type.");
+      }
+      if (desc.getIndex() == -1) {
+        return UNRECOGNIZED;
+      }
+      return VALUES[desc.getIndex()];
+    }
+
+    private final int value;
+
+    private RegionRole(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:greptime.v1.meta.RegionRole)
+  }
+
   public interface HeartbeatRequestOrBuilder extends
       // @@protoc_insertion_point(interface_extends:greptime.v1.meta.HeartbeatRequest)
       com.google.protobuf.MessageOrBuilder {
@@ -2164,6 +2288,25 @@ public interface RegionStatOrBuilder extends
      */
     com.google.protobuf.ByteString
         getEngineBytes();
+
+    /**
+     * <pre>
+     * Region role
+     * </pre>
+     *
+     * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+     * @return The enum numeric value on the wire for role.
+     */
+    int getRoleValue();
+    /**
+     * <pre>
+     * Region role
+     * </pre>
+     *
+     * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+     * @return The role.
+     */
+    greptime.v1.meta.HeartbeatOuterClass.RegionRole getRole();
   }
   /**
    * Protobuf type {@code greptime.v1.meta.RegionStat}
@@ -2179,6 +2322,7 @@ private RegionStat(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
     }
     private RegionStat() {
       engine_ = "";
+      role_ = 0;
     }
 
     @java.lang.Override
@@ -2242,6 +2386,12 @@ private RegionStat(
               engine_ = s;
               break;
             }
+            case 56: {
+              int rawValue = input.readEnum();
+
+              role_ = rawValue;
+              break;
+            }
             default: {
               if (!parseUnknownField(
                   input, unknownFields, extensionRegistry, tag)) {
@@ -2393,6 +2543,33 @@ public java.lang.String getEngine() {
       }
     }
 
+    public static final int ROLE_FIELD_NUMBER = 7;
+    private int role_;
+    /**
+     * <pre>
+     * Region role
+     * </pre>
+     *
+     * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+     * @return The enum numeric value on the wire for role.
+     */
+    @java.lang.Override public int getRoleValue() {
+      return role_;
+    }
+    /**
+     * <pre>
+     * Region role
+     * </pre>
+     *
+     * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+     * @return The role.
+     */
+    @java.lang.Override public greptime.v1.meta.HeartbeatOuterClass.RegionRole getRole() {
+      @SuppressWarnings("deprecation")
+      greptime.v1.meta.HeartbeatOuterClass.RegionRole result = greptime.v1.meta.HeartbeatOuterClass.RegionRole.valueOf(role_);
+      return result == null ? greptime.v1.meta.HeartbeatOuterClass.RegionRole.UNRECOGNIZED : result;
+    }
+
     private byte memoizedIsInitialized = -1;
     @java.lang.Override
     public final boolean isInitialized() {
@@ -2425,6 +2602,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(engine_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 6, engine_);
       }
+      if (role_ != greptime.v1.meta.HeartbeatOuterClass.RegionRole.Leader.getNumber()) {
+        output.writeEnum(7, role_);
+      }
       unknownFields.writeTo(output);
     }
 
@@ -2457,6 +2637,10 @@ public int getSerializedSize() {
       if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(engine_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, engine_);
       }
+      if (role_ != greptime.v1.meta.HeartbeatOuterClass.RegionRole.Leader.getNumber()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeEnumSize(7, role_);
+      }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
       return size;
@@ -2484,6 +2668,7 @@ public boolean equals(final java.lang.Object obj) {
           != other.getApproximateRows()) return false;
       if (!getEngine()
           .equals(other.getEngine())) return false;
+      if (role_ != other.role_) return false;
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
     }
@@ -2512,6 +2697,8 @@ public int hashCode() {
           getApproximateRows());
       hash = (37 * hash) + ENGINE_FIELD_NUMBER;
       hash = (53 * hash) + getEngine().hashCode();
+      hash = (37 * hash) + ROLE_FIELD_NUMBER;
+      hash = (53 * hash) + role_;
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -2657,6 +2844,8 @@ public Builder clear() {
 
         engine_ = "";
 
+        role_ = 0;
+
         return this;
       }
 
@@ -2689,6 +2878,7 @@ public greptime.v1.meta.HeartbeatOuterClass.RegionStat buildPartial() {
         result.approximateBytes_ = approximateBytes_;
         result.approximateRows_ = approximateRows_;
         result.engine_ = engine_;
+        result.role_ = role_;
         onBuilt();
         return result;
       }
@@ -2756,6 +2946,9 @@ public Builder mergeFrom(greptime.v1.meta.HeartbeatOuterClass.RegionStat other)
           engine_ = other.engine_;
           onChanged();
         }
+        if (other.role_ != 0) {
+          setRoleValue(other.getRoleValue());
+        }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
         return this;
@@ -3083,6 +3276,80 @@ public Builder setEngineBytes(
         onChanged();
         return this;
       }
+
+      private int role_ = 0;
+      /**
+       * <pre>
+       * Region role
+       * </pre>
+       *
+       * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+       * @return The enum numeric value on the wire for role.
+       */
+      @java.lang.Override public int getRoleValue() {
+        return role_;
+      }
+      /**
+       * <pre>
+       * Region role
+       * </pre>
+       *
+       * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+       * @param value The enum numeric value on the wire for role to set.
+       * @return This builder for chaining.
+       */
+      public Builder setRoleValue(int value) {
+        
+        role_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * Region role
+       * </pre>
+       *
+       * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+       * @return The role.
+       */
+      @java.lang.Override
+      public greptime.v1.meta.HeartbeatOuterClass.RegionRole getRole() {
+        @SuppressWarnings("deprecation")
+        greptime.v1.meta.HeartbeatOuterClass.RegionRole result = greptime.v1.meta.HeartbeatOuterClass.RegionRole.valueOf(role_);
+        return result == null ? greptime.v1.meta.HeartbeatOuterClass.RegionRole.UNRECOGNIZED : result;
+      }
+      /**
+       * <pre>
+       * Region role
+       * </pre>
+       *
+       * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+       * @param value The role to set.
+       * @return This builder for chaining.
+       */
+      public Builder setRole(greptime.v1.meta.HeartbeatOuterClass.RegionRole value) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        
+        role_ = value.getNumber();
+        onChanged();
+        return this;
+      }
+      /**
+       * <pre>
+       * Region role
+       * </pre>
+       *
+       * <code>.greptime.v1.meta.RegionRole role = 7;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearRole() {
+        
+        role_ = 0;
+        onChanged();
+        return this;
+      }
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -7792,31 +8059,33 @@ public greptime.v1.meta.HeartbeatOuterClass.MailboxMessage getDefaultInstanceFor
       "e.v1.meta.RegionStat\0229\n\017mailbox_message\030" +
       "\005 \001(\0132 .greptime.v1.meta.MailboxMessage\022" +
       "\034\n\024duration_since_epoch\030\006 \001(\004\022\022\n\nnode_ep" +
-      "och\030\007 \001(\004\"\200\001\n\nRegionStat\022\021\n\tregion_id\030\001 " +
+      "och\030\007 \001(\004\"\254\001\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\021appro" +
       "ximate_bytes\030\004 \001(\003\022\030\n\020approximate_rows\030\005" +
-      " \001(\003\022\016\n\006engine\030\006 \001(\t\"\265\001\n\021HeartbeatRespon" +
-      "se\0220\n\006header\030\001 \001(\0132 .greptime.v1.meta.Re" +
-      "sponseHeader\0229\n\017mailbox_message\030\002 \001(\0132 ." +
-      "greptime.v1.meta.MailboxMessage\0223\n\014regio" +
-      "n_lease\030\003 \001(\0132\035.greptime.v1.meta.RegionL" +
-      "ease\"V\n\013RegionLease\022\022\n\nregion_ids\030\001 \003(\004\022" +
-      "\034\n\024duration_since_epoch\030\002 \001(\004\022\025\n\rlease_s" +
-      "econds\030\003 \001(\004\"C\n\020AskLeaderRequest\022/\n\006head" +
-      "er\030\001 \001(\0132\037.greptime.v1.meta.RequestHeade" +
-      "r\"m\n\021AskLeaderResponse\0220\n\006header\030\001 \001(\0132 " +
-      ".greptime.v1.meta.ResponseHeader\022&\n\006lead" +
-      "er\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n\016Mail" +
-      "boxMessage\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_m" +
-      "illis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007payload2\277" +
-      "\001\n\tHeartbeat\022Z\n\tHeartbeat\022\".greptime.v1." +
-      "meta.HeartbeatRequest\032#.greptime.v1.meta" +
-      ".HeartbeatResponse\"\000(\0010\001\022V\n\tAskLeader\022\"." +
-      "greptime.v1.meta.AskLeaderRequest\032#.grep" +
-      "time.v1.meta.AskLeaderResponse\"\000B<Z:gith" +
-      "ub.com/GreptimeTeam/greptime-proto/go/gr" +
-      "eptime/v1/metab\006proto3"
+      " \001(\003\022\016\n\006engine\030\006 \001(\t\022*\n\004role\030\007 \001(\0162\034.gre" +
+      "ptime.v1.meta.RegionRole\"\265\001\n\021HeartbeatRe" +
+      "sponse\0220\n\006header\030\001 \001(\0132 .greptime.v1.met" +
+      "a.ResponseHeader\0229\n\017mailbox_message\030\002 \001(" +
+      "\0132 .greptime.v1.meta.MailboxMessage\0223\n\014r" +
+      "egion_lease\030\003 \001(\0132\035.greptime.v1.meta.Reg" +
+      "ionLease\"V\n\013RegionLease\022\022\n\nregion_ids\030\001 " +
+      "\003(\004\022\034\n\024duration_since_epoch\030\002 \001(\004\022\025\n\rlea" +
+      "se_seconds\030\003 \001(\004\"C\n\020AskLeaderRequest\022/\n\006" +
+      "header\030\001 \001(\0132\037.greptime.v1.meta.RequestH" +
+      "eader\"m\n\021AskLeaderResponse\0220\n\006header\030\001 \001" +
+      "(\0132 .greptime.v1.meta.ResponseHeader\022&\n\006" +
+      "leader\030\002 \001(\0132\026.greptime.v1.meta.Peer\"|\n\016" +
+      "MailboxMessage\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\020timesta" +
+      "mp_millis\030\005 \001(\003\022\016\n\004json\030\006 \001(\tH\000B\t\n\007paylo" +
+      "ad*&\n\nRegionRole\022\n\n\006Leader\020\000\022\014\n\010Follower" +
+      "\020\0012\277\001\n\tHeartbeat\022Z\n\tHeartbeat\022\".greptime" +
+      ".v1.meta.HeartbeatRequest\032#.greptime.v1." +
+      "meta.HeartbeatResponse\"\000(\0010\001\022V\n\tAskLeade" +
+      "r\022\".greptime.v1.meta.AskLeaderRequest\032#." +
+      "greptime.v1.meta.AskLeaderResponse\"\000B<Z:" +
+      "github.com/GreptimeTeam/greptime-proto/g" +
+      "o/greptime/v1/metab\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -7834,7 +8103,7 @@ public greptime.v1.meta.HeartbeatOuterClass.MailboxMessage getDefaultInstanceFor
     internal_static_greptime_v1_meta_RegionStat_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_meta_RegionStat_descriptor,
-        new java.lang.String[] { "RegionId", "Rcus", "Wcus", "ApproximateBytes", "ApproximateRows", "Engine", });
+        new java.lang.String[] { "RegionId", "Rcus", "Wcus", "ApproximateBytes", "ApproximateRows", "Engine", "Role", });
     internal_static_greptime_v1_meta_HeartbeatResponse_descriptor =
       getDescriptor().getMessageTypes().get(2);
     internal_static_greptime_v1_meta_HeartbeatResponse_fieldAccessorTable = new
diff --git a/proto/greptime/v1/meta/heartbeat.proto b/proto/greptime/v1/meta/heartbeat.proto
index 0c638ee8..5a49f4c1 100644
--- a/proto/greptime/v1/meta/heartbeat.proto
+++ b/proto/greptime/v1/meta/heartbeat.proto
@@ -48,6 +48,13 @@ message HeartbeatRequest {
   uint64 node_epoch = 7;
 }
 
+enum RegionRole {
+  // Writable region(mito2), Readonly region(file).
+  Leader = 0;
+  // Readonly region.
+  Follower = 1;
+}
+
 message RegionStat {
   uint64 region_id = 1;
   // The read capacity units during this period
@@ -60,6 +67,8 @@ message RegionStat {
   int64 approximate_rows = 5;
   // engine name
   string engine = 6;
+  // Region role
+  RegionRole role = 7;
 }
 
 message HeartbeatResponse {