diff --git a/Cargo.lock b/Cargo.lock
index 6a209e795c..453689ebc2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3866,7 +3866,7 @@ checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
 [[package]]
 name = "greptime-proto"
 version = "0.1.0"
-source = "git+https://github.com/GreptimeTeam/greptime-proto.git?rev=783682fabc38c57b5b9d46bdcfeebe2496e85bbb#783682fabc38c57b5b9d46bdcfeebe2496e85bbb"
+source = "git+https://github.com/GreptimeTeam/greptime-proto.git?rev=2c14c6e22dfe957f40bb88dd01fb8530656de89b#2c14c6e22dfe957f40bb88dd01fb8530656de89b"
 dependencies = [
  "prost 0.12.4",
  "serde",
diff --git a/Cargo.toml b/Cargo.toml
index 78b89a5e17..1e938f58a8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -115,7 +115,7 @@ etcd-client = { git = "https://github.com/MichaelScofield/etcd-client.git", rev
 fst = "0.4.7"
 futures = "0.3"
 futures-util = "0.3"
-greptime-proto = { git = "https://github.com/GreptimeTeam/greptime-proto.git", rev = "783682fabc38c57b5b9d46bdcfeebe2496e85bbb" }
+greptime-proto = { git = "https://github.com/GreptimeTeam/greptime-proto.git", rev = "2c14c6e22dfe957f40bb88dd01fb8530656de89b" }
 humantime = "2.1"
 humantime-serde = "1.1"
 itertools = "0.10"
diff --git a/src/client/src/client_manager.rs b/src/client/src/client_manager.rs
index e503555dd2..f219dd264e 100644
--- a/src/client/src/client_manager.rs
+++ b/src/client/src/client_manager.rs
@@ -17,7 +17,7 @@ use std::sync::Arc;
 use std::time::Duration;
 
 use common_grpc::channel_manager::{ChannelConfig, ChannelManager};
-use common_meta::datanode_manager::{Datanode, DatanodeManager};
+use common_meta::datanode_manager::{DatanodeRef, FlownodeRef, NodeManager};
 use common_meta::peer::Peer;
 use moka::future::{Cache, CacheBuilder};
 
@@ -44,12 +44,17 @@ impl Debug for DatanodeClients {
 }
 
 #[async_trait::async_trait]
-impl DatanodeManager for DatanodeClients {
-    async fn datanode(&self, datanode: &Peer) -> Arc<dyn Datanode> {
+impl NodeManager for DatanodeClients {
+    async fn datanode(&self, datanode: &Peer) -> DatanodeRef {
         let client = self.get_client(datanode).await;
 
         Arc::new(RegionRequester::new(client))
     }
+
+    async fn flownode(&self, _node: &Peer) -> FlownodeRef {
+        // TODO(weny): Support it.
+        unimplemented!()
+    }
 }
 
 impl DatanodeClients {
diff --git a/src/cmd/src/standalone.rs b/src/cmd/src/standalone.rs
index 2c7d4abad2..7148606a09 100644
--- a/src/cmd/src/standalone.rs
+++ b/src/cmd/src/standalone.rs
@@ -21,7 +21,7 @@ use clap::Parser;
 use common_catalog::consts::MIN_USER_TABLE_ID;
 use common_config::{metadata_store_dir, KvBackendConfig};
 use common_meta::cache_invalidator::{CacheInvalidatorRef, MultiCacheInvalidator};
-use common_meta::datanode_manager::DatanodeManagerRef;
+use common_meta::datanode_manager::NodeManagerRef;
 use common_meta::ddl::table_meta::{TableMetadataAllocator, TableMetadataAllocatorRef};
 use common_meta::ddl::ProcedureExecutorRef;
 use common_meta::ddl_manager::DdlManager;
@@ -468,7 +468,7 @@ impl StartCommand {
     pub async fn create_ddl_task_executor(
         table_metadata_manager: TableMetadataManagerRef,
         procedure_manager: ProcedureManagerRef,
-        datanode_manager: DatanodeManagerRef,
+        datanode_manager: NodeManagerRef,
         cache_invalidator: CacheInvalidatorRef,
         table_meta_allocator: TableMetadataAllocatorRef,
     ) -> Result<ProcedureExecutorRef> {
diff --git a/src/common/grpc-expr/src/alter.rs b/src/common/grpc-expr/src/alter.rs
index 6eebf00f4b..fcf4486b46 100644
--- a/src/common/grpc-expr/src/alter.rs
+++ b/src/common/grpc-expr/src/alter.rs
@@ -70,6 +70,7 @@ pub fn alter_expr_to_request(table_id: TableId, expr: AlterExpr) -> Result<Alter
         Kind::RenameTable(RenameTable { new_table_name }) => {
             AlterKind::RenameTable { new_table_name }
         }
+        Kind::ChangeColumnTypes(_) => unimplemented!(),
     };
 
     let request = AlterTableRequest {
diff --git a/src/common/meta/src/datanode_manager.rs b/src/common/meta/src/datanode_manager.rs
index 58990ce01d..f990bef330 100644
--- a/src/common/meta/src/datanode_manager.rs
+++ b/src/common/meta/src/datanode_manager.rs
@@ -15,6 +15,7 @@
 use std::sync::Arc;
 
 use api::region::RegionResponse;
+use api::v1::flow::{FlowRequest, FlowResponse, InsertRequest};
 use api::v1::region::{QueryRequest, RegionRequest};
 pub use common_base::AffectedRows;
 use common_recordbatch::SendableRecordBatchStream;
@@ -34,11 +35,24 @@ pub trait Datanode: Send + Sync {
 
 pub type DatanodeRef = Arc<dyn Datanode>;
 
-/// Datanode manager
+/// The trait for handling requests to flownode
 #[async_trait::async_trait]
-pub trait DatanodeManager: Send + Sync {
-    /// Retrieves a target `datanode`.
-    async fn datanode(&self, datanode: &Peer) -> DatanodeRef;
+pub trait Flownode: Send + Sync {
+    async fn handle(&self, request: FlowRequest) -> Result<FlowResponse>;
+
+    async fn handle_insert(&self, request: InsertRequest) -> Result<FlowResponse>;
 }
 
-pub type DatanodeManagerRef = Arc<dyn DatanodeManager>;
+pub type FlownodeRef = Arc<dyn Flownode>;
+
+/// Datanode manager
+#[async_trait::async_trait]
+pub trait NodeManager: Send + Sync {
+    /// Retrieves a target `datanode`.
+    async fn datanode(&self, node: &Peer) -> DatanodeRef;
+
+    /// Retrieves a target `flownode`.
+    async fn flownode(&self, node: &Peer) -> FlownodeRef;
+}
+
+pub type NodeManagerRef = Arc<dyn NodeManager>;
diff --git a/src/common/meta/src/ddl.rs b/src/common/meta/src/ddl.rs
index c763d33908..c7abac1d65 100644
--- a/src/common/meta/src/ddl.rs
+++ b/src/common/meta/src/ddl.rs
@@ -20,7 +20,7 @@ use store_api::storage::{RegionNumber, TableId};
 
 use self::table_meta::TableMetadataAllocatorRef;
 use crate::cache_invalidator::CacheInvalidatorRef;
-use crate::datanode_manager::DatanodeManagerRef;
+use crate::datanode_manager::NodeManagerRef;
 use crate::error::Result;
 use crate::key::table_route::PhysicalTableRouteValue;
 use crate::key::TableMetadataManagerRef;
@@ -95,7 +95,7 @@ pub struct TableMetadata {
 
 #[derive(Clone)]
 pub struct DdlContext {
-    pub datanode_manager: DatanodeManagerRef,
+    pub datanode_manager: NodeManagerRef,
     pub cache_invalidator: CacheInvalidatorRef,
     pub table_metadata_manager: TableMetadataManagerRef,
     pub memory_region_keeper: MemoryRegionKeeperRef,
diff --git a/src/common/meta/src/ddl/alter_table/region_request.rs b/src/common/meta/src/ddl/alter_table/region_request.rs
index cdebc25cbc..ce82ef831d 100644
--- a/src/common/meta/src/ddl/alter_table/region_request.rs
+++ b/src/common/meta/src/ddl/alter_table/region_request.rs
@@ -105,6 +105,7 @@ fn create_proto_alter_kind(
             })))
         }
         Kind::RenameTable(_) => Ok(None),
+        Kind::ChangeColumnTypes(_) => unimplemented!(),
     }
 }
 
diff --git a/src/common/meta/src/ddl_manager.rs b/src/common/meta/src/ddl_manager.rs
index 1577cab2dc..7201f9602d 100644
--- a/src/common/meta/src/ddl_manager.rs
+++ b/src/common/meta/src/ddl_manager.rs
@@ -23,7 +23,7 @@ use snafu::{ensure, OptionExt, ResultExt};
 use store_api::storage::TableId;
 
 use crate::cache_invalidator::CacheInvalidatorRef;
-use crate::datanode_manager::DatanodeManagerRef;
+use crate::datanode_manager::NodeManagerRef;
 use crate::ddl::alter_logical_tables::AlterLogicalTablesProcedure;
 use crate::ddl::alter_table::AlterTableProcedure;
 use crate::ddl::create_database::CreateDatabaseProcedure;
@@ -64,7 +64,7 @@ pub type BoxedProcedureLoaderFactory = dyn Fn(DdlContext) -> BoxedProcedureLoade
 /// The [DdlManager] provides the ability to execute Ddl.
 pub struct DdlManager {
     procedure_manager: ProcedureManagerRef,
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
     cache_invalidator: CacheInvalidatorRef,
     table_metadata_manager: TableMetadataManagerRef,
     table_metadata_allocator: TableMetadataAllocatorRef,
@@ -75,7 +75,7 @@ pub struct DdlManager {
 impl DdlManager {
     pub fn try_new(
         procedure_manager: ProcedureManagerRef,
-        datanode_clients: DatanodeManagerRef,
+        datanode_clients: NodeManagerRef,
         cache_invalidator: CacheInvalidatorRef,
         table_metadata_manager: TableMetadataManagerRef,
         table_metadata_allocator: TableMetadataAllocatorRef,
@@ -716,7 +716,7 @@ mod tests {
 
     use super::DdlManager;
     use crate::cache_invalidator::DummyCacheInvalidator;
-    use crate::datanode_manager::{DatanodeManager, DatanodeRef};
+    use crate::datanode_manager::{DatanodeRef, FlownodeRef, NodeManager};
     use crate::ddl::alter_table::AlterTableProcedure;
     use crate::ddl::create_table::CreateTableProcedure;
     use crate::ddl::drop_table::DropTableProcedure;
@@ -734,10 +734,14 @@ mod tests {
     pub struct DummyDatanodeManager;
 
     #[async_trait::async_trait]
-    impl DatanodeManager for DummyDatanodeManager {
+    impl NodeManager for DummyDatanodeManager {
         async fn datanode(&self, _datanode: &Peer) -> DatanodeRef {
             unimplemented!()
         }
+
+        async fn flownode(&self, _node: &Peer) -> FlownodeRef {
+            unimplemented!()
+        }
     }
 
     #[test]
diff --git a/src/common/meta/src/test_util.rs b/src/common/meta/src/test_util.rs
index 4ed396509a..c4c64445d7 100644
--- a/src/common/meta/src/test_util.rs
+++ b/src/common/meta/src/test_util.rs
@@ -20,7 +20,7 @@ pub use common_base::AffectedRows;
 use common_recordbatch::SendableRecordBatchStream;
 
 use crate::cache_invalidator::DummyCacheInvalidator;
-use crate::datanode_manager::{Datanode, DatanodeManager, DatanodeManagerRef, DatanodeRef};
+use crate::datanode_manager::{Datanode, DatanodeRef, FlownodeRef, NodeManager, NodeManagerRef};
 use crate::ddl::table_meta::TableMetadataAllocator;
 use crate::ddl::DdlContext;
 use crate::error::Result;
@@ -74,24 +74,28 @@ impl<T: MockDatanodeHandler> Datanode for MockDatanode<T> {
 }
 
 #[async_trait::async_trait]
-impl<T: MockDatanodeHandler + 'static> DatanodeManager for MockDatanodeManager<T> {
+impl<T: MockDatanodeHandler + 'static> NodeManager for MockDatanodeManager<T> {
     async fn datanode(&self, peer: &Peer) -> DatanodeRef {
         Arc::new(MockDatanode {
             peer: peer.clone(),
             handler: self.handler.clone(),
         })
     }
+
+    async fn flownode(&self, _node: &Peer) -> FlownodeRef {
+        unimplemented!()
+    }
 }
 
 /// Returns a test purpose [DdlContext].
-pub fn new_ddl_context(datanode_manager: DatanodeManagerRef) -> DdlContext {
+pub fn new_ddl_context(datanode_manager: NodeManagerRef) -> DdlContext {
     let kv_backend = Arc::new(MemoryKvBackend::new());
     new_ddl_context_with_kv_backend(datanode_manager, kv_backend)
 }
 
 /// Returns a test purpose [DdlContext] with a specified [KvBackendRef].
 pub fn new_ddl_context_with_kv_backend(
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
     kv_backend: KvBackendRef,
 ) -> DdlContext {
     let table_metadata_manager = Arc::new(TableMetadataManager::new(kv_backend.clone()));
diff --git a/src/frontend/src/instance/builder.rs b/src/frontend/src/instance/builder.rs
index 1464a11c27..2f39a0dd67 100644
--- a/src/frontend/src/instance/builder.rs
+++ b/src/frontend/src/instance/builder.rs
@@ -17,7 +17,7 @@ use std::sync::Arc;
 use catalog::CatalogManagerRef;
 use common_base::Plugins;
 use common_meta::cache_invalidator::{CacheInvalidatorRef, DummyCacheInvalidator};
-use common_meta::datanode_manager::DatanodeManagerRef;
+use common_meta::datanode_manager::NodeManagerRef;
 use common_meta::ddl::ProcedureExecutorRef;
 use common_meta::key::TableMetadataManager;
 use common_meta::kv_backend::KvBackendRef;
@@ -42,7 +42,7 @@ pub struct FrontendBuilder {
     kv_backend: KvBackendRef,
     cache_invalidator: Option<CacheInvalidatorRef>,
     catalog_manager: CatalogManagerRef,
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
     plugins: Option<Plugins>,
     procedure_executor: ProcedureExecutorRef,
     heartbeat_task: Option<HeartbeatTask>,
@@ -52,7 +52,7 @@ impl FrontendBuilder {
     pub fn new(
         kv_backend: KvBackendRef,
         catalog_manager: CatalogManagerRef,
-        datanode_manager: DatanodeManagerRef,
+        datanode_manager: NodeManagerRef,
         procedure_executor: ProcedureExecutorRef,
     ) -> Self {
         Self {
diff --git a/src/frontend/src/instance/region_query.rs b/src/frontend/src/instance/region_query.rs
index 844b9a7735..a6c21e3503 100644
--- a/src/frontend/src/instance/region_query.rs
+++ b/src/frontend/src/instance/region_query.rs
@@ -17,7 +17,7 @@ use std::sync::Arc;
 use api::v1::region::QueryRequest;
 use async_trait::async_trait;
 use common_error::ext::BoxedError;
-use common_meta::datanode_manager::DatanodeManagerRef;
+use common_meta::datanode_manager::NodeManagerRef;
 use common_recordbatch::SendableRecordBatchStream;
 use partition::manager::PartitionRuleManagerRef;
 use query::error::{RegionQuerySnafu, Result as QueryResult};
@@ -29,13 +29,13 @@ use crate::error::{FindTableRouteSnafu, RequestQuerySnafu, Result};
 
 pub(crate) struct FrontendRegionQueryHandler {
     partition_manager: PartitionRuleManagerRef,
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
 }
 
 impl FrontendRegionQueryHandler {
     pub fn arc(
         partition_manager: PartitionRuleManagerRef,
-        datanode_manager: DatanodeManagerRef,
+        datanode_manager: NodeManagerRef,
     ) -> Arc<Self> {
         Arc::new(Self {
             partition_manager,
diff --git a/src/frontend/src/instance/standalone.rs b/src/frontend/src/instance/standalone.rs
index 4001c4e59d..fcb1bd61e4 100644
--- a/src/frontend/src/instance/standalone.rs
+++ b/src/frontend/src/instance/standalone.rs
@@ -19,7 +19,7 @@ use api::v1::region::{QueryRequest, RegionRequest, RegionResponse as RegionRespo
 use async_trait::async_trait;
 use client::region::check_response_header;
 use common_error::ext::BoxedError;
-use common_meta::datanode_manager::{Datanode, DatanodeManager, DatanodeRef};
+use common_meta::datanode_manager::{Datanode, DatanodeRef, FlownodeRef, NodeManager};
 use common_meta::error::{self as meta_error, Result as MetaResult};
 use common_meta::peer::Peer;
 use common_recordbatch::SendableRecordBatchStream;
@@ -34,10 +34,14 @@ use crate::error::{InvalidRegionRequestSnafu, InvokeRegionServerSnafu, Result};
 pub struct StandaloneDatanodeManager(pub RegionServer);
 
 #[async_trait]
-impl DatanodeManager for StandaloneDatanodeManager {
+impl NodeManager for StandaloneDatanodeManager {
     async fn datanode(&self, _datanode: &Peer) -> DatanodeRef {
         RegionInvoker::arc(self.0.clone())
     }
+
+    async fn flownode(&self, _node: &Peer) -> FlownodeRef {
+        unimplemented!()
+    }
 }
 
 /// Relative to [client::region::RegionRequester]
diff --git a/src/meta-srv/src/metasrv/builder.rs b/src/meta-srv/src/metasrv/builder.rs
index bd4ab0394d..ea8613db4f 100644
--- a/src/meta-srv/src/metasrv/builder.rs
+++ b/src/meta-srv/src/metasrv/builder.rs
@@ -20,7 +20,7 @@ use client::client_manager::DatanodeClients;
 use common_base::Plugins;
 use common_catalog::consts::MIN_USER_TABLE_ID;
 use common_grpc::channel_manager::ChannelConfig;
-use common_meta::datanode_manager::DatanodeManagerRef;
+use common_meta::datanode_manager::NodeManagerRef;
 use common_meta::ddl::table_meta::{TableMetadataAllocator, TableMetadataAllocatorRef};
 use common_meta::ddl_manager::{DdlManager, DdlManagerRef};
 use common_meta::distributed_time_constants;
@@ -79,7 +79,7 @@ pub struct MetasrvBuilder {
     election: Option<ElectionRef>,
     meta_peer_client: Option<MetaPeerClientRef>,
     lock: Option<DistLockRef>,
-    datanode_manager: Option<DatanodeManagerRef>,
+    datanode_manager: Option<NodeManagerRef>,
     plugins: Option<Plugins>,
     table_metadata_allocator: Option<TableMetadataAllocatorRef>,
 }
@@ -141,7 +141,7 @@ impl MetasrvBuilder {
         self
     }
 
-    pub fn datanode_manager(mut self, datanode_manager: DatanodeManagerRef) -> Self {
+    pub fn datanode_manager(mut self, datanode_manager: NodeManagerRef) -> Self {
         self.datanode_manager = Some(datanode_manager);
         self
     }
@@ -392,7 +392,7 @@ fn build_procedure_manager(
 
 fn build_ddl_manager(
     options: &MetasrvOptions,
-    datanode_clients: Option<DatanodeManagerRef>,
+    datanode_clients: Option<NodeManagerRef>,
     procedure_manager: &ProcedureManagerRef,
     mailbox: &MailboxRef,
     table_metadata_manager: &TableMetadataManagerRef,
diff --git a/src/meta-srv/src/procedure/tests.rs b/src/meta-srv/src/procedure/tests.rs
index 03ddc2dbde..ce2e5cda4d 100644
--- a/src/meta-srv/src/procedure/tests.rs
+++ b/src/meta-srv/src/procedure/tests.rs
@@ -21,7 +21,7 @@ use api::v1::region::{CreateRequest as PbCreateRegionRequest, RegionColumnDef};
 use api::v1::{ColumnDataType, ColumnDef as PbColumnDef, SemanticType};
 use client::client_manager::DatanodeClients;
 use common_catalog::consts::MITO2_ENGINE;
-use common_meta::datanode_manager::DatanodeManagerRef;
+use common_meta::datanode_manager::NodeManagerRef;
 use common_meta::ddl::create_logical_tables::{CreateLogicalTablesProcedure, CreateTablesState};
 use common_meta::ddl::create_table::*;
 use common_meta::ddl::test_util::columns::TestColumnDefBuilder;
@@ -173,7 +173,7 @@ fn test_region_request_builder() {
 async fn new_datanode_manager(
     region_server: &EchoRegionServer,
     region_routes: &[RegionRoute],
-) -> DatanodeManagerRef {
+) -> NodeManagerRef {
     let clients = DatanodeClients::default();
 
     let datanodes = find_leaders(region_routes);
diff --git a/src/meta-srv/src/procedure/utils.rs b/src/meta-srv/src/procedure/utils.rs
index e14aa0fbc1..a79138e7a7 100644
--- a/src/meta-srv/src/procedure/utils.rs
+++ b/src/meta-srv/src/procedure/utils.rs
@@ -105,7 +105,7 @@ pub mod test_data {
 
     use chrono::DateTime;
     use common_catalog::consts::MITO2_ENGINE;
-    use common_meta::datanode_manager::DatanodeManagerRef;
+    use common_meta::datanode_manager::NodeManagerRef;
     use common_meta::ddl::table_meta::TableMetadataAllocator;
     use common_meta::ddl::DdlContext;
     use common_meta::key::TableMetadataManager;
@@ -188,7 +188,7 @@ pub mod test_data {
         }
     }
 
-    pub(crate) fn new_ddl_context(datanode_manager: DatanodeManagerRef) -> DdlContext {
+    pub(crate) fn new_ddl_context(datanode_manager: NodeManagerRef) -> DdlContext {
         let kv_backend = Arc::new(MemoryKvBackend::new());
 
         let mailbox_sequence =
diff --git a/src/operator/src/delete.rs b/src/operator/src/delete.rs
index 46f235123c..309edf4146 100644
--- a/src/operator/src/delete.rs
+++ b/src/operator/src/delete.rs
@@ -19,7 +19,7 @@ use std::{iter, mem};
 use api::v1::region::{DeleteRequests as RegionDeleteRequests, RegionRequestHeader};
 use api::v1::{DeleteRequests, RowDeleteRequests};
 use catalog::CatalogManagerRef;
-use common_meta::datanode_manager::{AffectedRows, DatanodeManagerRef};
+use common_meta::datanode_manager::{AffectedRows, NodeManagerRef};
 use common_meta::peer::Peer;
 use common_query::Output;
 use common_telemetry::tracing_context::TracingContext;
@@ -40,7 +40,7 @@ use crate::req_convert::delete::{ColumnToRow, RowToRegion, TableToRegion};
 pub struct Deleter {
     catalog_manager: CatalogManagerRef,
     partition_manager: PartitionRuleManagerRef,
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
 }
 
 pub type DeleterRef = Arc<Deleter>;
@@ -49,7 +49,7 @@ impl Deleter {
     pub fn new(
         catalog_manager: CatalogManagerRef,
         partition_manager: PartitionRuleManagerRef,
-        datanode_manager: DatanodeManagerRef,
+        datanode_manager: NodeManagerRef,
     ) -> Self {
         Self {
             catalog_manager,
diff --git a/src/operator/src/insert.rs b/src/operator/src/insert.rs
index 61d2d2cfcf..95ff84f13a 100644
--- a/src/operator/src/insert.rs
+++ b/src/operator/src/insert.rs
@@ -25,7 +25,7 @@ use catalog::CatalogManagerRef;
 use client::{OutputData, OutputMeta};
 use common_catalog::consts::default_engine;
 use common_grpc_expr::util::{extract_new_columns, ColumnExpr};
-use common_meta::datanode_manager::{AffectedRows, DatanodeManagerRef};
+use common_meta::datanode_manager::{AffectedRows, NodeManagerRef};
 use common_meta::peer::Peer;
 use common_query::prelude::{GREPTIME_TIMESTAMP, GREPTIME_VALUE};
 use common_query::Output;
@@ -57,7 +57,7 @@ use crate::statement::StatementExecutor;
 pub struct Inserter {
     catalog_manager: CatalogManagerRef,
     partition_manager: PartitionRuleManagerRef,
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
 }
 
 pub type InserterRef = Arc<Inserter>;
@@ -66,7 +66,7 @@ impl Inserter {
     pub fn new(
         catalog_manager: CatalogManagerRef,
         partition_manager: PartitionRuleManagerRef,
-        datanode_manager: DatanodeManagerRef,
+        datanode_manager: NodeManagerRef,
     ) -> Self {
         Self {
             catalog_manager,
diff --git a/src/operator/src/request.rs b/src/operator/src/request.rs
index 7cfd5a8a1a..768a2850aa 100644
--- a/src/operator/src/request.rs
+++ b/src/operator/src/request.rs
@@ -18,7 +18,7 @@ use api::v1::region::region_request::Body as RegionRequestBody;
 use api::v1::region::{CompactRequest, FlushRequest, RegionRequestHeader};
 use catalog::CatalogManagerRef;
 use common_catalog::build_db_string;
-use common_meta::datanode_manager::{AffectedRows, DatanodeManagerRef};
+use common_meta::datanode_manager::{AffectedRows, NodeManagerRef};
 use common_meta::peer::Peer;
 use common_telemetry::logging::{error, info};
 use common_telemetry::tracing_context::TracingContext;
@@ -39,7 +39,7 @@ use crate::region_req_factory::RegionRequestFactory;
 pub struct Requester {
     catalog_manager: CatalogManagerRef,
     partition_manager: PartitionRuleManagerRef,
-    datanode_manager: DatanodeManagerRef,
+    datanode_manager: NodeManagerRef,
 }
 
 pub type RequesterRef = Arc<Requester>;
@@ -48,7 +48,7 @@ impl Requester {
     pub fn new(
         catalog_manager: CatalogManagerRef,
         partition_manager: PartitionRuleManagerRef,
-        datanode_manager: DatanodeManagerRef,
+        datanode_manager: NodeManagerRef,
     ) -> Self {
         Self {
             catalog_manager,
diff --git a/src/store-api/src/region_request.rs b/src/store-api/src/region_request.rs
index 687db126f0..58210e45c2 100644
--- a/src/store-api/src/region_request.rs
+++ b/src/store-api/src/region_request.rs
@@ -461,6 +461,9 @@ impl TryFrom<alter_request::Kind> for AlterKind {
                 let names = x.drop_columns.into_iter().map(|x| x.name).collect();
                 AlterKind::DropColumns { names }
             }
+            alter_request::Kind::ChangeColumnTypes(_) => {
+                unimplemented!()
+            }
         };
 
         Ok(alter_kind)