diff --git a/c++/greptime/v1/wal.pb.cc b/c++/greptime/v1/wal.pb.cc
index 2a97cffe..ada312e4 100644
--- a/c++/greptime/v1/wal.pb.cc
+++ b/c++/greptime/v1/wal.pb.cc
@@ -22,9 +22,23 @@ namespace _pbi = _pb::internal;
 
 namespace greptime {
 namespace v1 {
+PROTOBUF_CONSTEXPR ManifestNotification::ManifestNotification(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.version_)*/uint64_t{0u}
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct ManifestNotificationDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ManifestNotificationDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ManifestNotificationDefaultTypeInternal() {}
+  union {
+    ManifestNotification _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ManifestNotificationDefaultTypeInternal _ManifestNotification_default_instance_;
 PROTOBUF_CONSTEXPR Mutation::Mutation(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.rows_)*/nullptr
+  , /*decltype(_impl_.manifest_notification_)*/nullptr
   , /*decltype(_impl_.sequence_)*/uint64_t{0u}
   , /*decltype(_impl_.op_type_)*/0
   , /*decltype(_impl_._cached_size_)*/{}} {}
@@ -52,11 +66,18 @@ struct WalEntryDefaultTypeInternal {
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 WalEntryDefaultTypeInternal _WalEntry_default_instance_;
 }  // namespace v1
 }  // namespace greptime
-static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fwal_2eproto[2];
+static ::_pb::Metadata file_level_metadata_greptime_2fv1_2fwal_2eproto[3];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_greptime_2fv1_2fwal_2eproto[1];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_greptime_2fv1_2fwal_2eproto = nullptr;
 
 const uint32_t TableStruct_greptime_2fv1_2fwal_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::ManifestNotification, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::ManifestNotification, _impl_.version_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::Mutation, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -66,6 +87,7 @@ const uint32_t TableStruct_greptime_2fv1_2fwal_2eproto::offsets[] PROTOBUF_SECTI
   PROTOBUF_FIELD_OFFSET(::greptime::v1::Mutation, _impl_.op_type_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::Mutation, _impl_.sequence_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::Mutation, _impl_.rows_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::Mutation, _impl_.manifest_notification_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::WalEntry, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -75,23 +97,28 @@ const uint32_t TableStruct_greptime_2fv1_2fwal_2eproto::offsets[] PROTOBUF_SECTI
   PROTOBUF_FIELD_OFFSET(::greptime::v1::WalEntry, _impl_.mutations_),
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
-  { 0, -1, -1, sizeof(::greptime::v1::Mutation)},
-  { 9, -1, -1, sizeof(::greptime::v1::WalEntry)},
+  { 0, -1, -1, sizeof(::greptime::v1::ManifestNotification)},
+  { 7, -1, -1, sizeof(::greptime::v1::Mutation)},
+  { 17, -1, -1, sizeof(::greptime::v1::WalEntry)},
 };
 
 static const ::_pb::Message* const file_default_instances[] = {
+  &::greptime::v1::_ManifestNotification_default_instance_._instance,
   &::greptime::v1::_Mutation_default_instance_._instance,
   &::greptime::v1::_WalEntry_default_instance_._instance,
 };
 
 const char descriptor_table_protodef_greptime_2fv1_2fwal_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
   "\n\025greptime/v1/wal.proto\022\013greptime.v1\032\025gr"
-  "eptime/v1/row.proto\"c\n\010Mutation\022$\n\007op_ty"
-  "pe\030\001 \001(\0162\023.greptime.v1.OpType\022\020\n\010sequenc"
-  "e\030\002 \001(\004\022\037\n\004rows\030\003 \001(\0132\021.greptime.v1.Rows"
-  "\"4\n\010WalEntry\022(\n\tmutations\030\001 \003(\0132\025.grepti"
-  "me.v1.Mutation*\035\n\006OpType\022\n\n\006DELETE\020\000\022\007\n\003"
-  "PUT\020\001B7Z5github.com/GreptimeTeam/greptim"
+  "eptime/v1/row.proto\"\'\n\024ManifestNotificat"
+  "ion\022\017\n\007version\030\001 \001(\004\"\245\001\n\010Mutation\022$\n\007op_"
+  "type\030\001 \001(\0162\023.greptime.v1.OpType\022\020\n\010seque"
+  "nce\030\002 \001(\004\022\037\n\004rows\030\003 \001(\0132\021.greptime.v1.Ro"
+  "ws\022@\n\025manifest_notification\030\004 \001(\0132!.grep"
+  "time.v1.ManifestNotification\"4\n\010WalEntry"
+  "\022(\n\tmutations\030\001 \003(\0132\025.greptime.v1.Mutati"
+  "on*)\n\006OpType\022\n\n\006DELETE\020\000\022\007\n\003PUT\020\001\022\n\n\006NOT"
+  "IFY\020\002B7Z5github.com/GreptimeTeam/greptim"
   "e-proto/go/greptime/v1b\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fwal_2eproto_deps[1] = {
@@ -99,9 +126,9 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fwal
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fwal_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fwal_2eproto = {
-    false, false, 310, descriptor_table_protodef_greptime_2fv1_2fwal_2eproto,
+    false, false, 430, descriptor_table_protodef_greptime_2fv1_2fwal_2eproto,
     "greptime/v1/wal.proto",
-    &descriptor_table_greptime_2fv1_2fwal_2eproto_once, descriptor_table_greptime_2fv1_2fwal_2eproto_deps, 1, 2,
+    &descriptor_table_greptime_2fv1_2fwal_2eproto_once, descriptor_table_greptime_2fv1_2fwal_2eproto_deps, 1, 3,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fwal_2eproto::offsets,
     file_level_metadata_greptime_2fv1_2fwal_2eproto, file_level_enum_descriptors_greptime_2fv1_2fwal_2eproto,
     file_level_service_descriptors_greptime_2fv1_2fwal_2eproto,
@@ -122,6 +149,7 @@ bool OpType_IsValid(int value) {
   switch (value) {
     case 0:
     case 1:
+    case 2:
       return true;
     default:
       return false;
@@ -129,17 +157,200 @@ bool OpType_IsValid(int value) {
 }
 
 
+// ===================================================================
+
+class ManifestNotification::_Internal {
+ public:
+};
+
+ManifestNotification::ManifestNotification(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.ManifestNotification)
+}
+ManifestNotification::ManifestNotification(const ManifestNotification& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  ManifestNotification* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.version_){}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  _this->_impl_.version_ = from._impl_.version_;
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.ManifestNotification)
+}
+
+inline void ManifestNotification::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.version_){uint64_t{0u}}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+}
+
+ManifestNotification::~ManifestNotification() {
+  // @@protoc_insertion_point(destructor:greptime.v1.ManifestNotification)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void ManifestNotification::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+}
+
+void ManifestNotification::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void ManifestNotification::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.ManifestNotification)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.version_ = uint64_t{0u};
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* ManifestNotification::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // uint64 version = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 8)) {
+          _impl_.version_ = ::PROTOBUF_NAMESPACE_ID::internal::ReadVarint64(&ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* ManifestNotification::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.ManifestNotification)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // uint64 version = 1;
+  if (this->_internal_version() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteUInt64ToArray(1, this->_internal_version(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.ManifestNotification)
+  return target;
+}
+
+size_t ManifestNotification::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.ManifestNotification)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // uint64 version = 1;
+  if (this->_internal_version() != 0) {
+    total_size += ::_pbi::WireFormatLite::UInt64SizePlusOne(this->_internal_version());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ManifestNotification::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    ManifestNotification::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ManifestNotification::GetClassData() const { return &_class_data_; }
+
+
+void ManifestNotification::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<ManifestNotification*>(&to_msg);
+  auto& from = static_cast<const ManifestNotification&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.ManifestNotification)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from._internal_version() != 0) {
+    _this->_internal_set_version(from._internal_version());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ManifestNotification::CopyFrom(const ManifestNotification& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.ManifestNotification)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool ManifestNotification::IsInitialized() const {
+  return true;
+}
+
+void ManifestNotification::InternalSwap(ManifestNotification* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_.version_, other->_impl_.version_);
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata ManifestNotification::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_greptime_2fv1_2fwal_2eproto_getter, &descriptor_table_greptime_2fv1_2fwal_2eproto_once,
+      file_level_metadata_greptime_2fv1_2fwal_2eproto[0]);
+}
+
 // ===================================================================
 
 class Mutation::_Internal {
  public:
   static const ::greptime::v1::Rows& rows(const Mutation* msg);
+  static const ::greptime::v1::ManifestNotification& manifest_notification(const Mutation* msg);
 };
 
 const ::greptime::v1::Rows&
 Mutation::_Internal::rows(const Mutation* msg) {
   return *msg->_impl_.rows_;
 }
+const ::greptime::v1::ManifestNotification&
+Mutation::_Internal::manifest_notification(const Mutation* msg) {
+  return *msg->_impl_.manifest_notification_;
+}
 void Mutation::clear_rows() {
   if (GetArenaForAllocation() == nullptr && _impl_.rows_ != nullptr) {
     delete _impl_.rows_;
@@ -157,6 +368,7 @@ Mutation::Mutation(const Mutation& from)
   Mutation* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       decltype(_impl_.rows_){nullptr}
+    , decltype(_impl_.manifest_notification_){nullptr}
     , decltype(_impl_.sequence_){}
     , decltype(_impl_.op_type_){}
     , /*decltype(_impl_._cached_size_)*/{}};
@@ -165,6 +377,9 @@ Mutation::Mutation(const Mutation& from)
   if (from._internal_has_rows()) {
     _this->_impl_.rows_ = new ::greptime::v1::Rows(*from._impl_.rows_);
   }
+  if (from._internal_has_manifest_notification()) {
+    _this->_impl_.manifest_notification_ = new ::greptime::v1::ManifestNotification(*from._impl_.manifest_notification_);
+  }
   ::memcpy(&_impl_.sequence_, &from._impl_.sequence_,
     static_cast<size_t>(reinterpret_cast<char*>(&_impl_.op_type_) -
     reinterpret_cast<char*>(&_impl_.sequence_)) + sizeof(_impl_.op_type_));
@@ -177,6 +392,7 @@ inline void Mutation::SharedCtor(
   (void)is_message_owned;
   new (&_impl_) Impl_{
       decltype(_impl_.rows_){nullptr}
+    , decltype(_impl_.manifest_notification_){nullptr}
     , decltype(_impl_.sequence_){uint64_t{0u}}
     , decltype(_impl_.op_type_){0}
     , /*decltype(_impl_._cached_size_)*/{}
@@ -195,6 +411,7 @@ Mutation::~Mutation() {
 inline void Mutation::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   if (this != internal_default_instance()) delete _impl_.rows_;
+  if (this != internal_default_instance()) delete _impl_.manifest_notification_;
 }
 
 void Mutation::SetCachedSize(int size) const {
@@ -211,6 +428,10 @@ void Mutation::Clear() {
     delete _impl_.rows_;
   }
   _impl_.rows_ = nullptr;
+  if (GetArenaForAllocation() == nullptr && _impl_.manifest_notification_ != nullptr) {
+    delete _impl_.manifest_notification_;
+  }
+  _impl_.manifest_notification_ = nullptr;
   ::memset(&_impl_.sequence_, 0, static_cast<size_t>(
       reinterpret_cast<char*>(&_impl_.op_type_) -
       reinterpret_cast<char*>(&_impl_.sequence_)) + sizeof(_impl_.op_type_));
@@ -248,6 +469,14 @@ const char* Mutation::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx)
         } else
           goto handle_unusual;
         continue;
+      // .greptime.v1.ManifestNotification manifest_notification = 4;
+      case 4:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 34)) {
+          ptr = ctx->ParseMessage(_internal_mutable_manifest_notification(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
       default:
         goto handle_unusual;
     }  // switch
@@ -297,6 +526,13 @@ uint8_t* Mutation::_InternalSerialize(
         _Internal::rows(this).GetCachedSize(), target, stream);
   }
 
+  // .greptime.v1.ManifestNotification manifest_notification = 4;
+  if (this->_internal_has_manifest_notification()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(4, _Internal::manifest_notification(this),
+        _Internal::manifest_notification(this).GetCachedSize(), target, stream);
+  }
+
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
@@ -320,6 +556,13 @@ size_t Mutation::ByteSizeLong() const {
         *_impl_.rows_);
   }
 
+  // .greptime.v1.ManifestNotification manifest_notification = 4;
+  if (this->_internal_has_manifest_notification()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+        *_impl_.manifest_notification_);
+  }
+
   // uint64 sequence = 2;
   if (this->_internal_sequence() != 0) {
     total_size += ::_pbi::WireFormatLite::UInt64SizePlusOne(this->_internal_sequence());
@@ -353,6 +596,10 @@ void Mutation::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTO
     _this->_internal_mutable_rows()->::greptime::v1::Rows::MergeFrom(
         from._internal_rows());
   }
+  if (from._internal_has_manifest_notification()) {
+    _this->_internal_mutable_manifest_notification()->::greptime::v1::ManifestNotification::MergeFrom(
+        from._internal_manifest_notification());
+  }
   if (from._internal_sequence() != 0) {
     _this->_internal_set_sequence(from._internal_sequence());
   }
@@ -387,7 +634,7 @@ void Mutation::InternalSwap(Mutation* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata Mutation::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fwal_2eproto_getter, &descriptor_table_greptime_2fv1_2fwal_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fwal_2eproto[0]);
+      file_level_metadata_greptime_2fv1_2fwal_2eproto[1]);
 }
 
 // ===================================================================
@@ -572,13 +819,17 @@ void WalEntry::InternalSwap(WalEntry* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata WalEntry::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fwal_2eproto_getter, &descriptor_table_greptime_2fv1_2fwal_2eproto_once,
-      file_level_metadata_greptime_2fv1_2fwal_2eproto[1]);
+      file_level_metadata_greptime_2fv1_2fwal_2eproto[2]);
 }
 
 // @@protoc_insertion_point(namespace_scope)
 }  // namespace v1
 }  // namespace greptime
 PROTOBUF_NAMESPACE_OPEN
+template<> PROTOBUF_NOINLINE ::greptime::v1::ManifestNotification*
+Arena::CreateMaybeMessage< ::greptime::v1::ManifestNotification >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::ManifestNotification >(arena);
+}
 template<> PROTOBUF_NOINLINE ::greptime::v1::Mutation*
 Arena::CreateMaybeMessage< ::greptime::v1::Mutation >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::Mutation >(arena);
diff --git a/c++/greptime/v1/wal.pb.h b/c++/greptime/v1/wal.pb.h
index 302a0859..f1592c8a 100644
--- a/c++/greptime/v1/wal.pb.h
+++ b/c++/greptime/v1/wal.pb.h
@@ -48,6 +48,9 @@ struct TableStruct_greptime_2fv1_2fwal_2eproto {
 extern const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_greptime_2fv1_2fwal_2eproto;
 namespace greptime {
 namespace v1 {
+class ManifestNotification;
+struct ManifestNotificationDefaultTypeInternal;
+extern ManifestNotificationDefaultTypeInternal _ManifestNotification_default_instance_;
 class Mutation;
 struct MutationDefaultTypeInternal;
 extern MutationDefaultTypeInternal _Mutation_default_instance_;
@@ -57,6 +60,7 @@ extern WalEntryDefaultTypeInternal _WalEntry_default_instance_;
 }  // namespace v1
 }  // namespace greptime
 PROTOBUF_NAMESPACE_OPEN
+template<> ::greptime::v1::ManifestNotification* Arena::CreateMaybeMessage<::greptime::v1::ManifestNotification>(Arena*);
 template<> ::greptime::v1::Mutation* Arena::CreateMaybeMessage<::greptime::v1::Mutation>(Arena*);
 template<> ::greptime::v1::WalEntry* Arena::CreateMaybeMessage<::greptime::v1::WalEntry>(Arena*);
 PROTOBUF_NAMESPACE_CLOSE
@@ -66,12 +70,13 @@ namespace v1 {
 enum OpType : int {
   DELETE = 0,
   PUT = 1,
+  NOTIFY = 2,
   OpType_INT_MIN_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::min(),
   OpType_INT_MAX_SENTINEL_DO_NOT_USE_ = std::numeric_limits<int32_t>::max()
 };
 bool OpType_IsValid(int value);
 constexpr OpType OpType_MIN = DELETE;
-constexpr OpType OpType_MAX = PUT;
+constexpr OpType OpType_MAX = NOTIFY;
 constexpr int OpType_ARRAYSIZE = OpType_MAX + 1;
 
 const ::PROTOBUF_NAMESPACE_ID::EnumDescriptor* OpType_descriptor();
@@ -90,6 +95,154 @@ inline bool OpType_Parse(
 }
 // ===================================================================
 
+class ManifestNotification final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.ManifestNotification) */ {
+ public:
+  inline ManifestNotification() : ManifestNotification(nullptr) {}
+  ~ManifestNotification() override;
+  explicit PROTOBUF_CONSTEXPR ManifestNotification(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  ManifestNotification(const ManifestNotification& from);
+  ManifestNotification(ManifestNotification&& from) noexcept
+    : ManifestNotification() {
+    *this = ::std::move(from);
+  }
+
+  inline ManifestNotification& operator=(const ManifestNotification& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ManifestNotification& operator=(ManifestNotification&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ManifestNotification& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ManifestNotification* internal_default_instance() {
+    return reinterpret_cast<const ManifestNotification*>(
+               &_ManifestNotification_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    0;
+
+  friend void swap(ManifestNotification& a, ManifestNotification& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ManifestNotification* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ManifestNotification* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ManifestNotification* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ManifestNotification>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const ManifestNotification& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const ManifestNotification& from) {
+    ManifestNotification::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ManifestNotification* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "greptime.v1.ManifestNotification";
+  }
+  protected:
+  explicit ManifestNotification(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kVersionFieldNumber = 1,
+  };
+  // uint64 version = 1;
+  void clear_version();
+  uint64_t version() const;
+  void set_version(uint64_t value);
+  private:
+  uint64_t _internal_version() const;
+  void _internal_set_version(uint64_t value);
+  public:
+
+  // @@protoc_insertion_point(class_scope:greptime.v1.ManifestNotification)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    uint64_t version_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_greptime_2fv1_2fwal_2eproto;
+};
+// -------------------------------------------------------------------
+
 class Mutation final :
     public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.Mutation) */ {
  public:
@@ -138,7 +291,7 @@ class Mutation final :
                &_Mutation_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    0;
+    1;
 
   friend void swap(Mutation& a, Mutation& b) {
     a.Swap(&b);
@@ -212,6 +365,7 @@ class Mutation final :
 
   enum : int {
     kRowsFieldNumber = 3,
+    kManifestNotificationFieldNumber = 4,
     kSequenceFieldNumber = 2,
     kOpTypeFieldNumber = 1,
   };
@@ -233,6 +387,24 @@ class Mutation final :
       ::greptime::v1::Rows* rows);
   ::greptime::v1::Rows* unsafe_arena_release_rows();
 
+  // .greptime.v1.ManifestNotification manifest_notification = 4;
+  bool has_manifest_notification() const;
+  private:
+  bool _internal_has_manifest_notification() const;
+  public:
+  void clear_manifest_notification();
+  const ::greptime::v1::ManifestNotification& manifest_notification() const;
+  PROTOBUF_NODISCARD ::greptime::v1::ManifestNotification* release_manifest_notification();
+  ::greptime::v1::ManifestNotification* mutable_manifest_notification();
+  void set_allocated_manifest_notification(::greptime::v1::ManifestNotification* manifest_notification);
+  private:
+  const ::greptime::v1::ManifestNotification& _internal_manifest_notification() const;
+  ::greptime::v1::ManifestNotification* _internal_mutable_manifest_notification();
+  public:
+  void unsafe_arena_set_allocated_manifest_notification(
+      ::greptime::v1::ManifestNotification* manifest_notification);
+  ::greptime::v1::ManifestNotification* unsafe_arena_release_manifest_notification();
+
   // uint64 sequence = 2;
   void clear_sequence();
   uint64_t sequence() const;
@@ -260,6 +432,7 @@ class Mutation final :
   typedef void DestructorSkippable_;
   struct Impl_ {
     ::greptime::v1::Rows* rows_;
+    ::greptime::v1::ManifestNotification* manifest_notification_;
     uint64_t sequence_;
     int op_type_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
@@ -317,7 +490,7 @@ class WalEntry final :
                &_WalEntry_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
-    1;
+    2;
 
   friend void swap(WalEntry& a, WalEntry& b) {
     a.Swap(&b);
@@ -433,6 +606,30 @@ class WalEntry final :
   #pragma GCC diagnostic push
   #pragma GCC diagnostic ignored "-Wstrict-aliasing"
 #endif  // __GNUC__
+// ManifestNotification
+
+// uint64 version = 1;
+inline void ManifestNotification::clear_version() {
+  _impl_.version_ = uint64_t{0u};
+}
+inline uint64_t ManifestNotification::_internal_version() const {
+  return _impl_.version_;
+}
+inline uint64_t ManifestNotification::version() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.ManifestNotification.version)
+  return _internal_version();
+}
+inline void ManifestNotification::_internal_set_version(uint64_t value) {
+  
+  _impl_.version_ = value;
+}
+inline void ManifestNotification::set_version(uint64_t value) {
+  _internal_set_version(value);
+  // @@protoc_insertion_point(field_set:greptime.v1.ManifestNotification.version)
+}
+
+// -------------------------------------------------------------------
+
 // Mutation
 
 // .greptime.v1.OpType op_type = 1;
@@ -560,6 +757,96 @@ inline void Mutation::set_allocated_rows(::greptime::v1::Rows* rows) {
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.Mutation.rows)
 }
 
+// .greptime.v1.ManifestNotification manifest_notification = 4;
+inline bool Mutation::_internal_has_manifest_notification() const {
+  return this != internal_default_instance() && _impl_.manifest_notification_ != nullptr;
+}
+inline bool Mutation::has_manifest_notification() const {
+  return _internal_has_manifest_notification();
+}
+inline void Mutation::clear_manifest_notification() {
+  if (GetArenaForAllocation() == nullptr && _impl_.manifest_notification_ != nullptr) {
+    delete _impl_.manifest_notification_;
+  }
+  _impl_.manifest_notification_ = nullptr;
+}
+inline const ::greptime::v1::ManifestNotification& Mutation::_internal_manifest_notification() const {
+  const ::greptime::v1::ManifestNotification* p = _impl_.manifest_notification_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::ManifestNotification&>(
+      ::greptime::v1::_ManifestNotification_default_instance_);
+}
+inline const ::greptime::v1::ManifestNotification& Mutation::manifest_notification() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.Mutation.manifest_notification)
+  return _internal_manifest_notification();
+}
+inline void Mutation::unsafe_arena_set_allocated_manifest_notification(
+    ::greptime::v1::ManifestNotification* manifest_notification) {
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.manifest_notification_);
+  }
+  _impl_.manifest_notification_ = manifest_notification;
+  if (manifest_notification) {
+    
+  } else {
+    
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.Mutation.manifest_notification)
+}
+inline ::greptime::v1::ManifestNotification* Mutation::release_manifest_notification() {
+  
+  ::greptime::v1::ManifestNotification* temp = _impl_.manifest_notification_;
+  _impl_.manifest_notification_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
+  temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  if (GetArenaForAllocation() == nullptr) { delete old; }
+#else  // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return temp;
+}
+inline ::greptime::v1::ManifestNotification* Mutation::unsafe_arena_release_manifest_notification() {
+  // @@protoc_insertion_point(field_release:greptime.v1.Mutation.manifest_notification)
+  
+  ::greptime::v1::ManifestNotification* temp = _impl_.manifest_notification_;
+  _impl_.manifest_notification_ = nullptr;
+  return temp;
+}
+inline ::greptime::v1::ManifestNotification* Mutation::_internal_mutable_manifest_notification() {
+  
+  if (_impl_.manifest_notification_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::ManifestNotification>(GetArenaForAllocation());
+    _impl_.manifest_notification_ = p;
+  }
+  return _impl_.manifest_notification_;
+}
+inline ::greptime::v1::ManifestNotification* Mutation::mutable_manifest_notification() {
+  ::greptime::v1::ManifestNotification* _msg = _internal_mutable_manifest_notification();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.Mutation.manifest_notification)
+  return _msg;
+}
+inline void Mutation::set_allocated_manifest_notification(::greptime::v1::ManifestNotification* manifest_notification) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  if (message_arena == nullptr) {
+    delete _impl_.manifest_notification_;
+  }
+  if (manifest_notification) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(manifest_notification);
+    if (message_arena != submessage_arena) {
+      manifest_notification = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, manifest_notification, submessage_arena);
+    }
+    
+  } else {
+    
+  }
+  _impl_.manifest_notification_ = manifest_notification;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.Mutation.manifest_notification)
+}
+
 // -------------------------------------------------------------------
 
 // WalEntry
@@ -609,6 +896,8 @@ WalEntry::mutations() const {
 #endif  // __GNUC__
 // -------------------------------------------------------------------
 
+// -------------------------------------------------------------------
+
 
 // @@protoc_insertion_point(namespace_scope)
 
diff --git a/go/greptime/v1/wal.pb.go b/go/greptime/v1/wal.pb.go
index 4243c8bb..de3a8184 100644
--- a/go/greptime/v1/wal.pb.go
+++ b/go/greptime/v1/wal.pb.go
@@ -42,6 +42,8 @@ const (
 	OpType_DELETE OpType = 0
 	// Put rows.
 	OpType_PUT OpType = 1
+	// Notify manifest changes.
+	OpType_NOTIFY OpType = 2
 )
 
 // Enum value maps for OpType.
@@ -49,10 +51,12 @@ var (
 	OpType_name = map[int32]string{
 		0: "DELETE",
 		1: "PUT",
+		2: "NOTIFY",
 	}
 	OpType_value = map[string]int32{
 		"DELETE": 0,
 		"PUT":    1,
+		"NOTIFY": 2,
 	}
 )
 
@@ -83,6 +87,54 @@ func (OpType) EnumDescriptor() ([]byte, []int) {
 	return file_greptime_v1_wal_proto_rawDescGZIP(), []int{0}
 }
 
+// The manfeist notification content.
+type ManifestNotification struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Version uint64 `protobuf:"varint,1,opt,name=version,proto3" json:"version,omitempty"`
+}
+
+func (x *ManifestNotification) Reset() {
+	*x = ManifestNotification{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_greptime_v1_wal_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ManifestNotification) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ManifestNotification) ProtoMessage() {}
+
+func (x *ManifestNotification) ProtoReflect() protoreflect.Message {
+	mi := &file_greptime_v1_wal_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ManifestNotification.ProtoReflect.Descriptor instead.
+func (*ManifestNotification) Descriptor() ([]byte, []int) {
+	return file_greptime_v1_wal_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *ManifestNotification) GetVersion() uint64 {
+	if x != nil {
+		return x.Version
+	}
+	return 0
+}
+
 // Mutation contains updates to a set of rows.
 type Mutation struct {
 	state         protoimpl.MessageState
@@ -95,12 +147,14 @@ type Mutation struct {
 	Sequence uint64 `protobuf:"varint,2,opt,name=sequence,proto3" json:"sequence,omitempty"`
 	// Row updates to write to the WAL.
 	Rows *Rows `protobuf:"bytes,3,opt,name=rows,proto3" json:"rows,omitempty"`
+	// The manifest change notification
+	ManifestNotification *ManifestNotification `protobuf:"bytes,4,opt,name=manifest_notification,json=manifestNotification,proto3" json:"manifest_notification,omitempty"`
 }
 
 func (x *Mutation) Reset() {
 	*x = Mutation{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_greptime_v1_wal_proto_msgTypes[0]
+		mi := &file_greptime_v1_wal_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -113,7 +167,7 @@ func (x *Mutation) String() string {
 func (*Mutation) ProtoMessage() {}
 
 func (x *Mutation) ProtoReflect() protoreflect.Message {
-	mi := &file_greptime_v1_wal_proto_msgTypes[0]
+	mi := &file_greptime_v1_wal_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -126,7 +180,7 @@ func (x *Mutation) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Mutation.ProtoReflect.Descriptor instead.
 func (*Mutation) Descriptor() ([]byte, []int) {
-	return file_greptime_v1_wal_proto_rawDescGZIP(), []int{0}
+	return file_greptime_v1_wal_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *Mutation) GetOpType() OpType {
@@ -150,6 +204,13 @@ func (x *Mutation) GetRows() *Rows {
 	return nil
 }
 
+func (x *Mutation) GetManifestNotification() *ManifestNotification {
+	if x != nil {
+		return x.ManifestNotification
+	}
+	return nil
+}
+
 // A WAL entry contains a list of mutations for a region to write.
 type WalEntry struct {
 	state         protoimpl.MessageState
@@ -163,7 +224,7 @@ type WalEntry struct {
 func (x *WalEntry) Reset() {
 	*x = WalEntry{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_greptime_v1_wal_proto_msgTypes[1]
+		mi := &file_greptime_v1_wal_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -176,7 +237,7 @@ func (x *WalEntry) String() string {
 func (*WalEntry) ProtoMessage() {}
 
 func (x *WalEntry) ProtoReflect() protoreflect.Message {
-	mi := &file_greptime_v1_wal_proto_msgTypes[1]
+	mi := &file_greptime_v1_wal_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -189,7 +250,7 @@ func (x *WalEntry) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use WalEntry.ProtoReflect.Descriptor instead.
 func (*WalEntry) Descriptor() ([]byte, []int) {
-	return file_greptime_v1_wal_proto_rawDescGZIP(), []int{1}
+	return file_greptime_v1_wal_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *WalEntry) GetMutations() []*Mutation {
@@ -205,25 +266,34 @@ var file_greptime_v1_wal_proto_rawDesc = []byte{
 	0x0a, 0x15, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x77, 0x61,
 	0x6c, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0b, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d,
 	0x65, 0x2e, 0x76, 0x31, 0x1a, 0x15, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76,
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+	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,
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 }
 
 var (
@@ -239,22 +309,24 @@ func file_greptime_v1_wal_proto_rawDescGZIP() []byte {
 }
 
 var file_greptime_v1_wal_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_greptime_v1_wal_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_greptime_v1_wal_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
 var file_greptime_v1_wal_proto_goTypes = []interface{}{
-	(OpType)(0),      // 0: greptime.v1.OpType
-	(*Mutation)(nil), // 1: greptime.v1.Mutation
-	(*WalEntry)(nil), // 2: greptime.v1.WalEntry
-	(*Rows)(nil),     // 3: greptime.v1.Rows
+	(OpType)(0),                  // 0: greptime.v1.OpType
+	(*ManifestNotification)(nil), // 1: greptime.v1.ManifestNotification
+	(*Mutation)(nil),             // 2: greptime.v1.Mutation
+	(*WalEntry)(nil),             // 3: greptime.v1.WalEntry
+	(*Rows)(nil),                 // 4: greptime.v1.Rows
 }
 var file_greptime_v1_wal_proto_depIdxs = []int32{
 	0, // 0: greptime.v1.Mutation.op_type:type_name -> greptime.v1.OpType
-	3, // 1: greptime.v1.Mutation.rows:type_name -> greptime.v1.Rows
-	1, // 2: greptime.v1.WalEntry.mutations:type_name -> greptime.v1.Mutation
-	3, // [3:3] is the sub-list for method output_type
-	3, // [3:3] is the sub-list for method input_type
-	3, // [3:3] is the sub-list for extension type_name
-	3, // [3:3] is the sub-list for extension extendee
-	0, // [0:3] is the sub-list for field type_name
+	4, // 1: greptime.v1.Mutation.rows:type_name -> greptime.v1.Rows
+	1, // 2: greptime.v1.Mutation.manifest_notification:type_name -> greptime.v1.ManifestNotification
+	2, // 3: greptime.v1.WalEntry.mutations:type_name -> greptime.v1.Mutation
+	4, // [4:4] is the sub-list for method output_type
+	4, // [4:4] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
 }
 
 func init() { file_greptime_v1_wal_proto_init() }
@@ -265,7 +337,7 @@ func file_greptime_v1_wal_proto_init() {
 	file_greptime_v1_row_proto_init()
 	if !protoimpl.UnsafeEnabled {
 		file_greptime_v1_wal_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Mutation); i {
+			switch v := v.(*ManifestNotification); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -277,6 +349,18 @@ func file_greptime_v1_wal_proto_init() {
 			}
 		}
 		file_greptime_v1_wal_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Mutation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_greptime_v1_wal_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*WalEntry); i {
 			case 0:
 				return &v.state
@@ -295,7 +379,7 @@ func file_greptime_v1_wal_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_greptime_v1_wal_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   2,
+			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/java/src/main/java/greptime/v1/Wal.java b/java/src/main/java/greptime/v1/Wal.java
index 1ec61be6..bc1e6a52 100644
--- a/java/src/main/java/greptime/v1/Wal.java
+++ b/java/src/main/java/greptime/v1/Wal.java
@@ -39,6 +39,14 @@ public enum OpType
      * <code>PUT = 1;</code>
      */
     PUT(1),
+    /**
+     * <pre>
+     * Notify manifest changes.
+     * </pre>
+     *
+     * <code>NOTIFY = 2;</code>
+     */
+    NOTIFY(2),
     UNRECOGNIZED(-1),
     ;
 
@@ -58,6 +66,14 @@ public enum OpType
      * <code>PUT = 1;</code>
      */
     public static final int PUT_VALUE = 1;
+    /**
+     * <pre>
+     * Notify manifest changes.
+     * </pre>
+     *
+     * <code>NOTIFY = 2;</code>
+     */
+    public static final int NOTIFY_VALUE = 2;
 
 
     public final int getNumber() {
@@ -65,81 +81,581 @@ public final int getNumber() {
         throw new java.lang.IllegalArgumentException(
             "Can't get the number of an unknown enum value.");
       }
-      return 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 OpType 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 OpType forNumber(int value) {
+      switch (value) {
+        case 0: return DELETE;
+        case 1: return PUT;
+        case 2: return NOTIFY;
+        default: return null;
+      }
+    }
+
+    public static com.google.protobuf.Internal.EnumLiteMap<OpType>
+        internalGetValueMap() {
+      return internalValueMap;
+    }
+    private static final com.google.protobuf.Internal.EnumLiteMap<
+        OpType> internalValueMap =
+          new com.google.protobuf.Internal.EnumLiteMap<OpType>() {
+            public OpType findValueByNumber(int number) {
+              return OpType.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.Wal.getDescriptor().getEnumTypes().get(0);
+    }
+
+    private static final OpType[] VALUES = values();
+
+    public static OpType 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 OpType(int value) {
+      this.value = value;
+    }
+
+    // @@protoc_insertion_point(enum_scope:greptime.v1.OpType)
+  }
+
+  public interface ManifestNotificationOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.ManifestNotification)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>uint64 version = 1;</code>
+     * @return The version.
+     */
+    long getVersion();
+  }
+  /**
+   * <pre>
+   * The manfeist notification content.
+   * </pre>
+   *
+   * Protobuf type {@code greptime.v1.ManifestNotification}
+   */
+  public static final class ManifestNotification extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:greptime.v1.ManifestNotification)
+      ManifestNotificationOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use ManifestNotification.newBuilder() to construct.
+    private ManifestNotification(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private ManifestNotification() {
+    }
+
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new ManifestNotification();
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private ManifestNotification(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+
+              version_ = input.readUInt64();
+              break;
+            }
+            default: {
+              if (!parseUnknownField(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (com.google.protobuf.UninitializedMessageException e) {
+        throw e.asInvalidProtocolBufferException().setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return greptime.v1.Wal.internal_static_greptime_v1_ManifestNotification_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return greptime.v1.Wal.internal_static_greptime_v1_ManifestNotification_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              greptime.v1.Wal.ManifestNotification.class, greptime.v1.Wal.ManifestNotification.Builder.class);
+    }
+
+    public static final int VERSION_FIELD_NUMBER = 1;
+    private long version_;
+    /**
+     * <code>uint64 version = 1;</code>
+     * @return The version.
+     */
+    @java.lang.Override
+    public long getVersion() {
+      return version_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (version_ != 0L) {
+        output.writeUInt64(1, version_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (version_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeUInt64Size(1, version_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof greptime.v1.Wal.ManifestNotification)) {
+        return super.equals(obj);
+      }
+      greptime.v1.Wal.ManifestNotification other = (greptime.v1.Wal.ManifestNotification) obj;
+
+      if (getVersion()
+          != other.getVersion()) return false;
+      if (!unknownFields.equals(other.unknownFields)) return false;
+      return true;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + VERSION_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getVersion());
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static greptime.v1.Wal.ManifestNotification parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(greptime.v1.Wal.ManifestNotification prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * The manfeist notification content.
+     * </pre>
+     *
+     * Protobuf type {@code greptime.v1.ManifestNotification}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:greptime.v1.ManifestNotification)
+        greptime.v1.Wal.ManifestNotificationOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return greptime.v1.Wal.internal_static_greptime_v1_ManifestNotification_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return greptime.v1.Wal.internal_static_greptime_v1_ManifestNotification_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                greptime.v1.Wal.ManifestNotification.class, greptime.v1.Wal.ManifestNotification.Builder.class);
+      }
+
+      // Construct using greptime.v1.Wal.ManifestNotification.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+        }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        version_ = 0L;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return greptime.v1.Wal.internal_static_greptime_v1_ManifestNotification_descriptor;
+      }
+
+      @java.lang.Override
+      public greptime.v1.Wal.ManifestNotification getDefaultInstanceForType() {
+        return greptime.v1.Wal.ManifestNotification.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public greptime.v1.Wal.ManifestNotification build() {
+        greptime.v1.Wal.ManifestNotification result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public greptime.v1.Wal.ManifestNotification buildPartial() {
+        greptime.v1.Wal.ManifestNotification result = new greptime.v1.Wal.ManifestNotification(this);
+        result.version_ = version_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof greptime.v1.Wal.ManifestNotification) {
+          return mergeFrom((greptime.v1.Wal.ManifestNotification)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(greptime.v1.Wal.ManifestNotification other) {
+        if (other == greptime.v1.Wal.ManifestNotification.getDefaultInstance()) return this;
+        if (other.getVersion() != 0L) {
+          setVersion(other.getVersion());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        greptime.v1.Wal.ManifestNotification parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (greptime.v1.Wal.ManifestNotification) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
 
-    /**
-     * @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 OpType valueOf(int value) {
-      return forNumber(value);
-    }
+      private long version_ ;
+      /**
+       * <code>uint64 version = 1;</code>
+       * @return The version.
+       */
+      @java.lang.Override
+      public long getVersion() {
+        return version_;
+      }
+      /**
+       * <code>uint64 version = 1;</code>
+       * @param value The version to set.
+       * @return This builder for chaining.
+       */
+      public Builder setVersion(long value) {
+        
+        version_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>uint64 version = 1;</code>
+       * @return This builder for chaining.
+       */
+      public Builder clearVersion() {
+        
+        version_ = 0L;
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFields(unknownFields);
+      }
 
-    /**
-     * @param value The numeric wire value of the corresponding enum entry.
-     * @return The enum associated with the given numeric wire value.
-     */
-    public static OpType forNumber(int value) {
-      switch (value) {
-        case 0: return DELETE;
-        case 1: return PUT;
-        default: return null;
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
       }
-    }
 
-    public static com.google.protobuf.Internal.EnumLiteMap<OpType>
-        internalGetValueMap() {
-      return internalValueMap;
-    }
-    private static final com.google.protobuf.Internal.EnumLiteMap<
-        OpType> internalValueMap =
-          new com.google.protobuf.Internal.EnumLiteMap<OpType>() {
-            public OpType findValueByNumber(int number) {
-              return OpType.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();
+      // @@protoc_insertion_point(builder_scope:greptime.v1.ManifestNotification)
     }
-    public static final com.google.protobuf.Descriptors.EnumDescriptor
-        getDescriptor() {
-      return greptime.v1.Wal.getDescriptor().getEnumTypes().get(0);
+
+    // @@protoc_insertion_point(class_scope:greptime.v1.ManifestNotification)
+    private static final greptime.v1.Wal.ManifestNotification DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new greptime.v1.Wal.ManifestNotification();
     }
 
-    private static final OpType[] VALUES = values();
+    public static greptime.v1.Wal.ManifestNotification getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
 
-    public static OpType 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;
+    private static final com.google.protobuf.Parser<ManifestNotification>
+        PARSER = new com.google.protobuf.AbstractParser<ManifestNotification>() {
+      @java.lang.Override
+      public ManifestNotification parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new ManifestNotification(input, extensionRegistry);
       }
-      return VALUES[desc.getIndex()];
+    };
+
+    public static com.google.protobuf.Parser<ManifestNotification> parser() {
+      return PARSER;
     }
 
-    private final int value;
+    @java.lang.Override
+    public com.google.protobuf.Parser<ManifestNotification> getParserForType() {
+      return PARSER;
+    }
 
-    private OpType(int value) {
-      this.value = value;
+    @java.lang.Override
+    public greptime.v1.Wal.ManifestNotification getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
     }
 
-    // @@protoc_insertion_point(enum_scope:greptime.v1.OpType)
   }
 
   public interface MutationOrBuilder extends
@@ -201,6 +717,33 @@ public interface MutationOrBuilder extends
      * <code>.greptime.v1.Rows rows = 3;</code>
      */
     io.greptime.v1.RowData.RowsOrBuilder getRowsOrBuilder();
+
+    /**
+     * <pre>
+     * The manifest change notification
+     * </pre>
+     *
+     * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+     * @return Whether the manifestNotification field is set.
+     */
+    boolean hasManifestNotification();
+    /**
+     * <pre>
+     * The manifest change notification
+     * </pre>
+     *
+     * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+     * @return The manifestNotification.
+     */
+    greptime.v1.Wal.ManifestNotification getManifestNotification();
+    /**
+     * <pre>
+     * The manifest change notification
+     * </pre>
+     *
+     * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+     */
+    greptime.v1.Wal.ManifestNotificationOrBuilder getManifestNotificationOrBuilder();
   }
   /**
    * <pre>
@@ -276,6 +819,19 @@ private Mutation(
 
               break;
             }
+            case 34: {
+              greptime.v1.Wal.ManifestNotification.Builder subBuilder = null;
+              if (manifestNotification_ != null) {
+                subBuilder = manifestNotification_.toBuilder();
+              }
+              manifestNotification_ = input.readMessage(greptime.v1.Wal.ManifestNotification.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom(manifestNotification_);
+                manifestNotification_ = subBuilder.buildPartial();
+              }
+
+              break;
+            }
             default: {
               if (!parseUnknownField(
                   input, unknownFields, extensionRegistry, tag)) {
@@ -390,6 +946,44 @@ public io.greptime.v1.RowData.RowsOrBuilder getRowsOrBuilder() {
       return getRows();
     }
 
+    public static final int MANIFEST_NOTIFICATION_FIELD_NUMBER = 4;
+    private greptime.v1.Wal.ManifestNotification manifestNotification_;
+    /**
+     * <pre>
+     * The manifest change notification
+     * </pre>
+     *
+     * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+     * @return Whether the manifestNotification field is set.
+     */
+    @java.lang.Override
+    public boolean hasManifestNotification() {
+      return manifestNotification_ != null;
+    }
+    /**
+     * <pre>
+     * The manifest change notification
+     * </pre>
+     *
+     * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+     * @return The manifestNotification.
+     */
+    @java.lang.Override
+    public greptime.v1.Wal.ManifestNotification getManifestNotification() {
+      return manifestNotification_ == null ? greptime.v1.Wal.ManifestNotification.getDefaultInstance() : manifestNotification_;
+    }
+    /**
+     * <pre>
+     * The manifest change notification
+     * </pre>
+     *
+     * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+     */
+    @java.lang.Override
+    public greptime.v1.Wal.ManifestNotificationOrBuilder getManifestNotificationOrBuilder() {
+      return getManifestNotification();
+    }
+
     private byte memoizedIsInitialized = -1;
     @java.lang.Override
     public final boolean isInitialized() {
@@ -413,6 +1007,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       if (rows_ != null) {
         output.writeMessage(3, getRows());
       }
+      if (manifestNotification_ != null) {
+        output.writeMessage(4, getManifestNotification());
+      }
       unknownFields.writeTo(output);
     }
 
@@ -434,6 +1031,10 @@ public int getSerializedSize() {
         size += com.google.protobuf.CodedOutputStream
           .computeMessageSize(3, getRows());
       }
+      if (manifestNotification_ != null) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeMessageSize(4, getManifestNotification());
+      }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
       return size;
@@ -457,6 +1058,11 @@ public boolean equals(final java.lang.Object obj) {
         if (!getRows()
             .equals(other.getRows())) return false;
       }
+      if (hasManifestNotification() != other.hasManifestNotification()) return false;
+      if (hasManifestNotification()) {
+        if (!getManifestNotification()
+            .equals(other.getManifestNotification())) return false;
+      }
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
     }
@@ -477,6 +1083,10 @@ public int hashCode() {
         hash = (37 * hash) + ROWS_FIELD_NUMBER;
         hash = (53 * hash) + getRows().hashCode();
       }
+      if (hasManifestNotification()) {
+        hash = (37 * hash) + MANIFEST_NOTIFICATION_FIELD_NUMBER;
+        hash = (53 * hash) + getManifestNotification().hashCode();
+      }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
@@ -624,6 +1234,12 @@ public Builder clear() {
           rows_ = null;
           rowsBuilder_ = null;
         }
+        if (manifestNotificationBuilder_ == null) {
+          manifestNotification_ = null;
+        } else {
+          manifestNotification_ = null;
+          manifestNotificationBuilder_ = null;
+        }
         return this;
       }
 
@@ -657,6 +1273,11 @@ public greptime.v1.Wal.Mutation buildPartial() {
         } else {
           result.rows_ = rowsBuilder_.build();
         }
+        if (manifestNotificationBuilder_ == null) {
+          result.manifestNotification_ = manifestNotification_;
+        } else {
+          result.manifestNotification_ = manifestNotificationBuilder_.build();
+        }
         onBuilt();
         return result;
       }
@@ -714,6 +1335,9 @@ public Builder mergeFrom(greptime.v1.Wal.Mutation other) {
         if (other.hasRows()) {
           mergeRows(other.getRows());
         }
+        if (other.hasManifestNotification()) {
+          mergeManifestNotification(other.getManifestNotification());
+        }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
         return this;
@@ -1014,6 +1638,161 @@ public io.greptime.v1.RowData.RowsOrBuilder getRowsOrBuilder() {
         }
         return rowsBuilder_;
       }
+
+      private greptime.v1.Wal.ManifestNotification manifestNotification_;
+      private com.google.protobuf.SingleFieldBuilderV3<
+          greptime.v1.Wal.ManifestNotification, greptime.v1.Wal.ManifestNotification.Builder, greptime.v1.Wal.ManifestNotificationOrBuilder> manifestNotificationBuilder_;
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       * @return Whether the manifestNotification field is set.
+       */
+      public boolean hasManifestNotification() {
+        return manifestNotificationBuilder_ != null || manifestNotification_ != null;
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       * @return The manifestNotification.
+       */
+      public greptime.v1.Wal.ManifestNotification getManifestNotification() {
+        if (manifestNotificationBuilder_ == null) {
+          return manifestNotification_ == null ? greptime.v1.Wal.ManifestNotification.getDefaultInstance() : manifestNotification_;
+        } else {
+          return manifestNotificationBuilder_.getMessage();
+        }
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      public Builder setManifestNotification(greptime.v1.Wal.ManifestNotification value) {
+        if (manifestNotificationBuilder_ == null) {
+          if (value == null) {
+            throw new NullPointerException();
+          }
+          manifestNotification_ = value;
+          onChanged();
+        } else {
+          manifestNotificationBuilder_.setMessage(value);
+        }
+
+        return this;
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      public Builder setManifestNotification(
+          greptime.v1.Wal.ManifestNotification.Builder builderForValue) {
+        if (manifestNotificationBuilder_ == null) {
+          manifestNotification_ = builderForValue.build();
+          onChanged();
+        } else {
+          manifestNotificationBuilder_.setMessage(builderForValue.build());
+        }
+
+        return this;
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      public Builder mergeManifestNotification(greptime.v1.Wal.ManifestNotification value) {
+        if (manifestNotificationBuilder_ == null) {
+          if (manifestNotification_ != null) {
+            manifestNotification_ =
+              greptime.v1.Wal.ManifestNotification.newBuilder(manifestNotification_).mergeFrom(value).buildPartial();
+          } else {
+            manifestNotification_ = value;
+          }
+          onChanged();
+        } else {
+          manifestNotificationBuilder_.mergeFrom(value);
+        }
+
+        return this;
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      public Builder clearManifestNotification() {
+        if (manifestNotificationBuilder_ == null) {
+          manifestNotification_ = null;
+          onChanged();
+        } else {
+          manifestNotification_ = null;
+          manifestNotificationBuilder_ = null;
+        }
+
+        return this;
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      public greptime.v1.Wal.ManifestNotification.Builder getManifestNotificationBuilder() {
+        
+        onChanged();
+        return getManifestNotificationFieldBuilder().getBuilder();
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      public greptime.v1.Wal.ManifestNotificationOrBuilder getManifestNotificationOrBuilder() {
+        if (manifestNotificationBuilder_ != null) {
+          return manifestNotificationBuilder_.getMessageOrBuilder();
+        } else {
+          return manifestNotification_ == null ?
+              greptime.v1.Wal.ManifestNotification.getDefaultInstance() : manifestNotification_;
+        }
+      }
+      /**
+       * <pre>
+       * The manifest change notification
+       * </pre>
+       *
+       * <code>.greptime.v1.ManifestNotification manifest_notification = 4;</code>
+       */
+      private com.google.protobuf.SingleFieldBuilderV3<
+          greptime.v1.Wal.ManifestNotification, greptime.v1.Wal.ManifestNotification.Builder, greptime.v1.Wal.ManifestNotificationOrBuilder> 
+          getManifestNotificationFieldBuilder() {
+        if (manifestNotificationBuilder_ == null) {
+          manifestNotificationBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              greptime.v1.Wal.ManifestNotification, greptime.v1.Wal.ManifestNotification.Builder, greptime.v1.Wal.ManifestNotificationOrBuilder>(
+                  getManifestNotification(),
+                  getParentForChildren(),
+                  isClean());
+          manifestNotification_ = null;
+        }
+        return manifestNotificationBuilder_;
+      }
       @java.lang.Override
       public final Builder setUnknownFields(
           final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -1982,6 +2761,11 @@ public greptime.v1.Wal.WalEntry getDefaultInstanceForType() {
 
   }
 
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_greptime_v1_ManifestNotification_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_greptime_v1_ManifestNotification_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_Mutation_descriptor;
   private static final 
@@ -2002,12 +2786,15 @@ public greptime.v1.Wal.WalEntry getDefaultInstanceForType() {
   static {
     java.lang.String[] descriptorData = {
       "\n\025greptime/v1/wal.proto\022\013greptime.v1\032\025gr" +
-      "eptime/v1/row.proto\"c\n\010Mutation\022$\n\007op_ty" +
-      "pe\030\001 \001(\0162\023.greptime.v1.OpType\022\020\n\010sequenc" +
-      "e\030\002 \001(\004\022\037\n\004rows\030\003 \001(\0132\021.greptime.v1.Rows" +
-      "\"4\n\010WalEntry\022(\n\tmutations\030\001 \003(\0132\025.grepti" +
-      "me.v1.Mutation*\035\n\006OpType\022\n\n\006DELETE\020\000\022\007\n\003" +
-      "PUT\020\001B7Z5github.com/GreptimeTeam/greptim" +
+      "eptime/v1/row.proto\"\'\n\024ManifestNotificat" +
+      "ion\022\017\n\007version\030\001 \001(\004\"\245\001\n\010Mutation\022$\n\007op_" +
+      "type\030\001 \001(\0162\023.greptime.v1.OpType\022\020\n\010seque" +
+      "nce\030\002 \001(\004\022\037\n\004rows\030\003 \001(\0132\021.greptime.v1.Ro" +
+      "ws\022@\n\025manifest_notification\030\004 \001(\0132!.grep" +
+      "time.v1.ManifestNotification\"4\n\010WalEntry" +
+      "\022(\n\tmutations\030\001 \003(\0132\025.greptime.v1.Mutati" +
+      "on*)\n\006OpType\022\n\n\006DELETE\020\000\022\007\n\003PUT\020\001\022\n\n\006NOT" +
+      "IFY\020\002B7Z5github.com/GreptimeTeam/greptim" +
       "e-proto/go/greptime/v1b\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
@@ -2015,14 +2802,20 @@ public greptime.v1.Wal.WalEntry getDefaultInstanceForType() {
         new com.google.protobuf.Descriptors.FileDescriptor[] {
           io.greptime.v1.RowData.getDescriptor(),
         });
-    internal_static_greptime_v1_Mutation_descriptor =
+    internal_static_greptime_v1_ManifestNotification_descriptor =
       getDescriptor().getMessageTypes().get(0);
+    internal_static_greptime_v1_ManifestNotification_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_greptime_v1_ManifestNotification_descriptor,
+        new java.lang.String[] { "Version", });
+    internal_static_greptime_v1_Mutation_descriptor =
+      getDescriptor().getMessageTypes().get(1);
     internal_static_greptime_v1_Mutation_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_Mutation_descriptor,
-        new java.lang.String[] { "OpType", "Sequence", "Rows", });
+        new java.lang.String[] { "OpType", "Sequence", "Rows", "ManifestNotification", });
     internal_static_greptime_v1_WalEntry_descriptor =
-      getDescriptor().getMessageTypes().get(1);
+      getDescriptor().getMessageTypes().get(2);
     internal_static_greptime_v1_WalEntry_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_WalEntry_descriptor,
diff --git a/proto/greptime/v1/wal.proto b/proto/greptime/v1/wal.proto
index 1ca9d39c..e5185d8b 100644
--- a/proto/greptime/v1/wal.proto
+++ b/proto/greptime/v1/wal.proto
@@ -26,6 +26,13 @@ enum OpType {
   DELETE = 0;
   // Put rows.
   PUT = 1;
+  // Notify manifest changes.
+  NOTIFY = 2;
+}
+
+// The manfeist notification content.
+message ManifestNotification {
+  uint64 version = 1;
 }
 
 // Mutation contains updates to a set of rows.
@@ -36,6 +43,8 @@ message Mutation {
   uint64 sequence = 2;
   // Row updates to write to the WAL.
   Rows rows = 3;
+  // The manifest change notification
+  ManifestNotification manifest_notification = 4;
 }
 
 // A WAL entry contains a list of mutations for a region to write.