diff --git a/include/libs/sync/sync.h b/include/libs/sync/sync.h
index fc926cb1b4..db9979bf12 100644
--- a/include/libs/sync/sync.h
+++ b/include/libs/sync/sync.h
@@ -132,27 +132,27 @@ typedef struct SSnapshotMeta {
 typedef struct SSyncFSM {
   void* data;
 
-  void (*FpCommitCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
-  void (*FpPreCommitCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
-  void (*FpRollBackCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
+  void (*FpCommitCb)(const struct SSyncFSM* pFsm, const SRpcMsg* pMsg, const SFsmCbMeta *pMeta);
+  void (*FpPreCommitCb)(const struct SSyncFSM* pFsm, const SRpcMsg* pMsg, const SFsmCbMeta* pMeta);
+  void (*FpRollBackCb)(const struct SSyncFSM* pFsm, const SRpcMsg* pMsg, const SFsmCbMeta* pMeta);
 
-  void (*FpRestoreFinishCb)(struct SSyncFSM* pFsm);
-  void (*FpReConfigCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SReConfigCbMeta* cbMeta);
-  void (*FpLeaderTransferCb)(struct SSyncFSM* pFsm, const SRpcMsg* pMsg, SFsmCbMeta cbMeta);
+  void (*FpRestoreFinishCb)(const struct SSyncFSM* pFsm);
+  void (*FpReConfigCb)(const struct SSyncFSM* pFsm, const SRpcMsg* pMsg, const SReConfigCbMeta* pMeta);
+  void (*FpLeaderTransferCb)(const struct SSyncFSM* pFsm, const SRpcMsg* pMsg, const SFsmCbMeta* pMeta);
 
-  void (*FpBecomeLeaderCb)(struct SSyncFSM* pFsm);
-  void (*FpBecomeFollowerCb)(struct SSyncFSM* pFsm);
+  void (*FpBecomeLeaderCb)(const struct SSyncFSM* pFsm);
+  void (*FpBecomeFollowerCb)(const struct SSyncFSM* pFsm);
 
-  int32_t (*FpGetSnapshot)(struct SSyncFSM* pFsm, SSnapshot* pSnapshot, void* pReaderParam, void** ppReader);
-  int32_t (*FpGetSnapshotInfo)(struct SSyncFSM* pFsm, SSnapshot* pSnapshot);
+  int32_t (*FpGetSnapshot)(const struct SSyncFSM* pFsm, SSnapshot* pSnapshot, void* pReaderParam, void** ppReader);
+  int32_t (*FpGetSnapshotInfo)(const struct SSyncFSM* pFsm, SSnapshot* pSnapshot);
 
-  int32_t (*FpSnapshotStartRead)(struct SSyncFSM* pFsm, void* pReaderParam, void** ppReader);
-  int32_t (*FpSnapshotStopRead)(struct SSyncFSM* pFsm, void* pReader);
-  int32_t (*FpSnapshotDoRead)(struct SSyncFSM* pFsm, void* pReader, void** ppBuf, int32_t* len);
+  int32_t (*FpSnapshotStartRead)(const struct SSyncFSM* pFsm, void* pReaderParam, void** ppReader);
+  int32_t (*FpSnapshotStopRead)(const struct SSyncFSM* pFsm, void* pReader);
+  int32_t (*FpSnapshotDoRead)(const struct SSyncFSM* pFsm, void* pReader, void** ppBuf, int32_t* len);
 
-  int32_t (*FpSnapshotStartWrite)(struct SSyncFSM* pFsm, void* pWriterParam, void** ppWriter);
-  int32_t (*FpSnapshotStopWrite)(struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot* pSnapshot);
-  int32_t (*FpSnapshotDoWrite)(struct SSyncFSM* pFsm, void* pWriter, void* pBuf, int32_t len);
+  int32_t (*FpSnapshotStartWrite)(const struct SSyncFSM* pFsm, void* pWriterParam, void** ppWriter);
+  int32_t (*FpSnapshotStopWrite)(const struct SSyncFSM* pFsm, void* pWriter, bool isApply, SSnapshot* pSnapshot);
+  int32_t (*FpSnapshotDoWrite)(const struct SSyncFSM* pFsm, void* pWriter, void* pBuf, int32_t len);
 
 } SSyncFSM;
 
diff --git a/include/libs/sync/syncTools.h b/include/libs/sync/syncTools.h
index 9cb8a9d564..eb3c99fee7 100644
--- a/include/libs/sync/syncTools.h
+++ b/include/libs/sync/syncTools.h
@@ -28,8 +28,6 @@ typedef struct SRaftId {
   SyncGroupId vgId;
 } SRaftId;
 
-int32_t syncGetRespRpc(int64_t rid, uint64_t index, SRpcMsg* msg);
-int32_t syncGetAndDelRespRpc(int64_t rid, uint64_t index, SRpcHandleInfo* pInfo);
 void    syncSetMsgCb(int64_t rid, const SMsgCb* msgcb);
 char*   sync2SimpleStr(int64_t rid);
 
diff --git a/source/dnode/mnode/impl/inc/mndInt.h b/source/dnode/mnode/impl/inc/mndInt.h
index ad2a3ec447..dc14a28d6f 100644
--- a/source/dnode/mnode/impl/inc/mndInt.h
+++ b/source/dnode/mnode/impl/inc/mndInt.h
@@ -90,7 +90,6 @@ typedef struct {
   int32_t  errCode;
   int32_t  transId;
   SRWLatch lock;
-  int8_t   leaderTransferFinish;
   int8_t   selfIndex;
   int8_t   numOfReplicas;
   SReplica replicas[TSDB_MAX_REPLICA];
diff --git a/source/dnode/mnode/impl/src/mndMain.c b/source/dnode/mnode/impl/src/mndMain.c
index 891f2bbcd8..5668802412 100644
--- a/source/dnode/mnode/impl/src/mndMain.c
+++ b/source/dnode/mnode/impl/src/mndMain.c
@@ -428,18 +428,7 @@ SMnode *mndOpen(const char *path, const SMnodeOpt *pOption) {
 
 void mndPreClose(SMnode *pMnode) {
   if (pMnode != NULL) {
-    atomic_store_8(&(pMnode->syncMgmt.leaderTransferFinish), 0);
     syncLeaderTransfer(pMnode->syncMgmt.sync);
-
-#if 0
-    mInfo("vgId:1, mnode start leader transfer");
-    // wait for leader transfer finish
-    while (!atomic_load_8(&(pMnode->syncMgmt.leaderTransferFinish))) {
-      taosMsleep(10);
-      mInfo("vgId:1, mnode waiting for leader transfer");
-    }
-    mInfo("vgId:1, mnode finish leader transfer");
-#endif
   }
 }
 
diff --git a/source/dnode/mnode/impl/src/mndSync.c b/source/dnode/mnode/impl/src/mndSync.c
index df4b526775..1cd97b73e6 100644
--- a/source/dnode/mnode/impl/src/mndSync.c
+++ b/source/dnode/mnode/impl/src/mndSync.c
@@ -39,25 +39,25 @@ static int32_t mndSyncSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg) {
   return code;
 }
 
-void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+void mndSyncCommitMsg(const SSyncFSM *pFsm, const SRpcMsg *pMsg, const SFsmCbMeta *pMeta) {
   SMnode    *pMnode = pFsm->data;
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
   SSdbRaw   *pRaw = pMsg->pCont;
 
   // delete msg handle
   SRpcMsg rpcMsg = {0};
-  syncGetAndDelRespRpc(pMnode->syncMgmt.sync, cbMeta.seqNum, &rpcMsg.info);
+  rpcMsg.info = pMsg->info;
 
   int32_t transId = sdbGetIdFromRaw(pMnode->pSdb, pRaw);
-  pMgmt->errCode = cbMeta.code;
+  pMgmt->errCode = pMeta->code;
   mInfo("trans:%d, is proposed, saved:%d code:0x%x, apply index:%" PRId64 " term:%" PRIu64 " config:%" PRId64
         " role:%s raw:%p",
-        transId, pMgmt->transId, cbMeta.code, cbMeta.index, cbMeta.term, cbMeta.lastConfigIndex, syncStr(cbMeta.state),
+        transId, pMgmt->transId, pMeta->code, pMeta->index, pMeta->term, pMeta->lastConfigIndex, syncStr(pMeta->state),
         pRaw);
 
   if (pMgmt->errCode == 0) {
     sdbWriteWithoutFree(pMnode->pSdb, pRaw);
-    sdbSetApplyInfo(pMnode->pSdb, cbMeta.index, cbMeta.term, cbMeta.lastConfigIndex);
+    sdbSetApplyInfo(pMnode->pSdb, pMeta->index, pMeta->term, pMeta->lastConfigIndex);
   }
 
   taosWLockLatch(&pMgmt->lock);
@@ -87,7 +87,7 @@ void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbM
   }
 }
 
-int32_t mndSyncGetSnapshot(struct SSyncFSM *pFsm, SSnapshot *pSnapshot, void *pReaderParam, void **ppReader) {
+int32_t mndSyncGetSnapshot(const SSyncFSM *pFsm, SSnapshot *pSnapshot, void *pReaderParam, void **ppReader) {
   mInfo("start to read snapshot from sdb in atomic way");
   SMnode *pMnode = pFsm->data;
   return sdbStartRead(pMnode->pSdb, (SSdbIter **)ppReader, &pSnapshot->lastApplyIndex, &pSnapshot->lastApplyTerm,
@@ -95,13 +95,13 @@ int32_t mndSyncGetSnapshot(struct SSyncFSM *pFsm, SSnapshot *pSnapshot, void *pR
   return 0;
 }
 
-int32_t mndSyncGetSnapshotInfo(struct SSyncFSM *pFsm, SSnapshot *pSnapshot) {
+int32_t mndSyncGetSnapshotInfo(const SSyncFSM *pFsm, SSnapshot *pSnapshot) {
   SMnode *pMnode = pFsm->data;
   sdbGetCommitInfo(pMnode->pSdb, &pSnapshot->lastApplyIndex, &pSnapshot->lastApplyTerm, &pSnapshot->lastConfigIndex);
   return 0;
 }
 
-void mndRestoreFinish(struct SSyncFSM *pFsm) {
+void mndRestoreFinish(const SSyncFSM *pFsm) {
   SMnode *pMnode = pFsm->data;
 
   if (!pMnode->deploy) {
@@ -113,32 +113,30 @@ void mndRestoreFinish(struct SSyncFSM *pFsm) {
   }
 }
 
-void mndReConfig(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SReConfigCbMeta *cbMeta) {}
-
-int32_t mndSnapshotStartRead(struct SSyncFSM *pFsm, void *pParam, void **ppReader) {
+int32_t mndSnapshotStartRead(const SSyncFSM *pFsm, void *pParam, void **ppReader) {
   mInfo("start to read snapshot from sdb");
   SMnode *pMnode = pFsm->data;
   return sdbStartRead(pMnode->pSdb, (SSdbIter **)ppReader, NULL, NULL, NULL);
 }
 
-int32_t mndSnapshotStopRead(struct SSyncFSM *pFsm, void *pReader) {
+int32_t mndSnapshotStopRead(const SSyncFSM *pFsm, void *pReader) {
   mInfo("stop to read snapshot from sdb");
   SMnode *pMnode = pFsm->data;
   return sdbStopRead(pMnode->pSdb, pReader);
 }
 
-int32_t mndSnapshotDoRead(struct SSyncFSM *pFsm, void *pReader, void **ppBuf, int32_t *len) {
+int32_t mndSnapshotDoRead(const SSyncFSM *pFsm, void *pReader, void **ppBuf, int32_t *len) {
   SMnode *pMnode = pFsm->data;
   return sdbDoRead(pMnode->pSdb, pReader, ppBuf, len);
 }
 
-int32_t mndSnapshotStartWrite(struct SSyncFSM *pFsm, void *pParam, void **ppWriter) {
+int32_t mndSnapshotStartWrite(const SSyncFSM *pFsm, void *pParam, void **ppWriter) {
   mInfo("start to apply snapshot to sdb");
   SMnode *pMnode = pFsm->data;
   return sdbStartWrite(pMnode->pSdb, (SSdbIter **)ppWriter);
 }
 
-int32_t mndSnapshotStopWrite(struct SSyncFSM *pFsm, void *pWriter, bool isApply, SSnapshot *pSnapshot) {
+int32_t mndSnapshotStopWrite(const SSyncFSM *pFsm, void *pWriter, bool isApply, SSnapshot *pSnapshot) {
   mInfo("stop to apply snapshot to sdb, apply:%d, index:%" PRId64 " term:%" PRIu64 " config:%" PRId64, isApply,
         pSnapshot->lastApplyIndex, pSnapshot->lastApplyTerm, pSnapshot->lastConfigIndex);
   SMnode *pMnode = pFsm->data;
@@ -146,18 +144,12 @@ int32_t mndSnapshotStopWrite(struct SSyncFSM *pFsm, void *pWriter, bool isApply,
                       pSnapshot->lastConfigIndex);
 }
 
-int32_t mndSnapshotDoWrite(struct SSyncFSM *pFsm, void *pWriter, void *pBuf, int32_t len) {
+int32_t mndSnapshotDoWrite(const SSyncFSM *pFsm, void *pWriter, void *pBuf, int32_t len) {
   SMnode *pMnode = pFsm->data;
   return sdbDoWrite(pMnode->pSdb, pWriter, pBuf, len);
 }
 
-void mndLeaderTransfer(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
-  SMnode *pMnode = pFsm->data;
-  atomic_store_8(&(pMnode->syncMgmt.leaderTransferFinish), 1);
-  mInfo("vgId:1, mnode leader transfer finish");
-}
-
-static void mndBecomeFollower(struct SSyncFSM *pFsm) {
+static void mndBecomeFollower(const SSyncFSM *pFsm) {
   SMnode *pMnode = pFsm->data;
   mInfo("vgId:1, become follower");
 
@@ -172,7 +164,7 @@ static void mndBecomeFollower(struct SSyncFSM *pFsm) {
   taosWUnLockLatch(&pMnode->syncMgmt.lock);
 }
 
-static void mndBecomeLeader(struct SSyncFSM *pFsm) {
+static void mndBecomeLeader(const SSyncFSM *pFsm) {
   mInfo("vgId:1, become leader");
   SMnode *pMnode = pFsm->data;
 }
@@ -184,8 +176,8 @@ SSyncFSM *mndSyncMakeFsm(SMnode *pMnode) {
   pFsm->FpPreCommitCb = NULL;
   pFsm->FpRollBackCb = NULL;
   pFsm->FpRestoreFinishCb = mndRestoreFinish;
-  pFsm->FpLeaderTransferCb = mndLeaderTransfer;
-  pFsm->FpReConfigCb = mndReConfig;
+  pFsm->FpLeaderTransferCb = NULL;
+  pFsm->FpReConfigCb = NULL;
   pFsm->FpBecomeLeaderCb = mndBecomeLeader;
   pFsm->FpBecomeFollowerCb = mndBecomeFollower;
   pFsm->FpGetSnapshot = mndSyncGetSnapshot;
@@ -256,32 +248,26 @@ void mndCleanupSync(SMnode *pMnode) {
 
 int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
   SSyncMgmt *pMgmt = &pMnode->syncMgmt;
-  SRpcMsg    req = {.msgType = TDMT_MND_APPLY_MSG, .contLen = sdbGetRawTotalSize(pRaw)};
-  if (req.contLen <= 0) {
-    terrno = TSDB_CODE_APP_ERROR;
-    return -1;
-  }
+  pMgmt->errCode = 0;
 
+  SRpcMsg req = {.msgType = TDMT_MND_APPLY_MSG, .contLen = sdbGetRawTotalSize(pRaw)};
   req.pCont = rpcMallocCont(req.contLen);
   if (req.pCont == NULL) return -1;
   memcpy(req.pCont, pRaw, req.contLen);
 
-  pMgmt->errCode = 0;
   taosWLockLatch(&pMgmt->lock);
   if (pMgmt->transId != 0) {
-    mError("trans:%d, can't be proposed since trans:%d alrady waiting for confirm", transId, pMgmt->transId);
+    mError("trans:%d, can't be proposed since trans:%d already waiting for confirm", transId, pMgmt->transId);
     taosWUnLockLatch(&pMgmt->lock);
     terrno = TSDB_CODE_APP_NOT_READY;
     return -1;
-  } else {
-    pMgmt->transId = transId;
-    mInfo("trans:%d, will be proposed", pMgmt->transId);
-    taosWUnLockLatch(&pMgmt->lock);
   }
 
-  const bool isWeak = false;
-  int32_t    code = syncPropose(pMgmt->sync, &req, isWeak);
+  mInfo("trans:%d, will be proposed", transId);
+  pMgmt->transId = transId;
+  taosWUnLockLatch(&pMgmt->lock);
 
+  int32_t code = syncPropose(pMgmt->sync, &req, false);
   if (code == 0) {
     mInfo("trans:%d, is proposing and wait sem", pMgmt->transId);
     tsem_wait(&pMgmt->syncSem);
@@ -294,8 +280,8 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
     sdbSetApplyInfo(pMnode->pSdb, req.info.conn.applyIndex, req.info.conn.applyTerm, SYNC_INDEX_INVALID);
     code = 0;
   } else {
-    taosWLockLatch(&pMgmt->lock);
     mInfo("trans:%d, failed to proposed since %s", transId, terrstr());
+    taosWLockLatch(&pMgmt->lock);
     pMgmt->transId = 0;
     taosWUnLockLatch(&pMgmt->lock);
     if (terrno == TSDB_CODE_SYN_NOT_LEADER) {
@@ -311,7 +297,7 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
     return code;
   }
 
-  if (pMgmt->errCode != 0) terrno = pMgmt->errCode;
+  terrno = pMgmt->errCode;
   return pMgmt->errCode;
 }
 
diff --git a/source/dnode/vnode/src/vnd/vnodeSync.c b/source/dnode/vnode/src/vnd/vnodeSync.c
index 7f2214d298..1d88be42d8 100644
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@@ -237,7 +237,7 @@ int32_t vnodeProcessSyncMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
   int32_t code = syncProcessMsg(pVnode->sync, pMsg);
   if (code != 0) {
     vGError("vgId:%d, failed to process sync msg:%p type:%s since %s", pVnode->config.vgId, pMsg,
-           TMSG_INFO(pMsg->msgType), terrstr());
+            TMSG_INFO(pMsg->msgType), terrstr());
   }
 
   return code;
@@ -278,78 +278,61 @@ static int32_t vnodeSyncSendMsg(const SEpSet *pEpSet, SRpcMsg *pMsg) {
   return code;
 }
 
-static int32_t vnodeSyncGetSnapshot(SSyncFSM *pFsm, SSnapshot *pSnapshot) {
+static int32_t vnodeSyncGetSnapshot(const SSyncFSM *pFsm, SSnapshot *pSnapshot) {
   vnodeGetSnapshot(pFsm->data, pSnapshot);
   return 0;
 }
 
-static void vnodeSyncReconfig(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SReConfigCbMeta *cbMeta) {}
+static void vnodeSyncApplyMsg(const SSyncFSM *pFsm, const SRpcMsg *pMsg, const SFsmCbMeta *pMeta) {
+  SVnode *pVnode = pFsm->data;
 
-static void vnodeSyncCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
-  if (cbMeta.isWeak == 0) {
-    SVnode *pVnode = pFsm->data;
+  if (pMeta->code == 0) {
+    SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen};
+    rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
+    memcpy(rpcMsg.pCont, pMsg->pCont, pMsg->contLen);
+    rpcMsg.info = pMsg->info;
+    rpcMsg.info.conn.applyIndex = pMeta->index;
+    rpcMsg.info.conn.applyTerm = pMeta->term;
 
-    if (cbMeta.code == 0) {
-      SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen};
-      rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
-      memcpy(rpcMsg.pCont, pMsg->pCont, pMsg->contLen);
-      syncGetAndDelRespRpc(pVnode->sync, cbMeta.seqNum, &rpcMsg.info);
-      rpcMsg.info.conn.applyIndex = cbMeta.index;
-      rpcMsg.info.conn.applyTerm = cbMeta.term;
-
-      vInfo("vgId:%d, commit-cb is excuted, fsm:%p, index:%" PRId64 ", term:%" PRIu64 ", msg-index:%" PRId64
+    const STraceId *trace = &pMsg->info.traceId;
+    vGTrace("vgId:%d, commit-cb is excuted, fsm:%p, index:%" PRId64 ", term:%" PRIu64 ", msg-index:%" PRId64
             ", weak:%d, code:%d, state:%d %s, type:%s",
-            syncGetVgId(pVnode->sync), pFsm, cbMeta.index, cbMeta.term, rpcMsg.info.conn.applyIndex, cbMeta.isWeak,
-            cbMeta.code, cbMeta.state, syncUtilState2String(cbMeta.state), TMSG_INFO(pMsg->msgType));
+            syncGetVgId(pVnode->sync), pFsm, pMeta->index, pMeta->term, rpcMsg.info.conn.applyIndex, pMeta->isWeak,
+            pMeta->code, pMeta->state, syncUtilState2String(pMeta->state), TMSG_INFO(pMsg->msgType));
 
-      tmsgPutToQueue(&pVnode->msgCb, APPLY_QUEUE, &rpcMsg);
-    } else {
-      SRpcMsg rsp = {.code = cbMeta.code, .info = pMsg->info};
-      vError("vgId:%d, commit-cb execute error, type:%s, index:%" PRId64 ", error:0x%x %s", syncGetVgId(pVnode->sync),
-             TMSG_INFO(pMsg->msgType), cbMeta.index, cbMeta.code, tstrerror(cbMeta.code));
-      if (rsp.info.handle != NULL) {
-        tmsgSendRsp(&rsp);
-      }
+    tmsgPutToQueue(&pVnode->msgCb, APPLY_QUEUE, &rpcMsg);
+  } else {
+    SRpcMsg rsp = {.code = pMeta->code, .info = pMsg->info};
+    vError("vgId:%d, commit-cb execute error, type:%s, index:%" PRId64 ", error:0x%x %s", syncGetVgId(pVnode->sync),
+           TMSG_INFO(pMsg->msgType), pMeta->index, pMeta->code, tstrerror(pMeta->code));
+    if (rsp.info.handle != NULL) {
+      tmsgSendRsp(&rsp);
     }
   }
 }
 
-static void vnodeSyncPreCommitMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
-  if (cbMeta.isWeak == 1) {
-    SVnode *pVnode = pFsm->data;
-    vTrace("vgId:%d, pre-commit-cb is excuted, fsm:%p, index:%" PRId64 ", weak:%d, code:%d, state:%d %s, type:%s",
-           syncGetVgId(pVnode->sync), pFsm, cbMeta.index, cbMeta.isWeak, cbMeta.code, cbMeta.state,
-           syncUtilState2String(cbMeta.state), TMSG_INFO(pMsg->msgType));
-
-    if (cbMeta.code == 0) {
-      SRpcMsg rpcMsg = {.msgType = pMsg->msgType, .contLen = pMsg->contLen};
-      rpcMsg.pCont = rpcMallocCont(rpcMsg.contLen);
-      memcpy(rpcMsg.pCont, pMsg->pCont, pMsg->contLen);
-      syncGetAndDelRespRpc(pVnode->sync, cbMeta.seqNum, &rpcMsg.info);
-      rpcMsg.info.conn.applyIndex = cbMeta.index;
-      rpcMsg.info.conn.applyTerm = cbMeta.term;
-      tmsgPutToQueue(&pVnode->msgCb, APPLY_QUEUE, &rpcMsg);
-    } else {
-      SRpcMsg rsp = {.code = cbMeta.code, .info = pMsg->info};
-      vError("vgId:%d, pre-commit-cb execute error, type:%s, error:0x%x %s", syncGetVgId(pVnode->sync),
-             TMSG_INFO(pMsg->msgType), cbMeta.code, tstrerror(cbMeta.code));
-      if (rsp.info.handle != NULL) {
-        tmsgSendRsp(&rsp);
-      }
-    }
+static void vnodeSyncCommitMsg(const SSyncFSM *pFsm, const SRpcMsg *pMsg, const SFsmCbMeta *pMeta) {
+  if (pMeta->isWeak == 0) {
+    vnodeSyncApplyMsg(pFsm->data, pMsg, pMeta);
   }
 }
 
-static void vnodeSyncRollBackMsg(SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {
+static void vnodeSyncPreCommitMsg(const SSyncFSM *pFsm, const SRpcMsg *pMsg, const SFsmCbMeta *pMeta) {
+  if (pMeta->isWeak == 1) {
+    vnodeSyncApplyMsg(pFsm->data, pMsg, pMeta);
+  }
+}
+
+static void vnodeSyncRollBackMsg(const SSyncFSM *pFsm, const SRpcMsg *pMsg, const SFsmCbMeta *pMeta) {
   SVnode *pVnode = pFsm->data;
   vTrace("vgId:%d, rollback-cb is excuted, fsm:%p, index:%" PRId64 ", weak:%d, code:%d, state:%d %s, type:%s",
-         syncGetVgId(pVnode->sync), pFsm, cbMeta.index, cbMeta.isWeak, cbMeta.code, cbMeta.state,
-         syncUtilState2String(cbMeta.state), TMSG_INFO(pMsg->msgType));
+         syncGetVgId(pVnode->sync), pFsm, pMeta->index, pMeta->isWeak, pMeta->code, pMeta->state,
+         syncUtilState2String(pMeta->state), TMSG_INFO(pMsg->msgType));
 }
 
 #define USE_TSDB_SNAPSHOT
 
-static int32_t vnodeSnapshotStartRead(struct SSyncFSM *pFsm, void *pParam, void **ppReader) {
+static int32_t vnodeSnapshotStartRead(const SSyncFSM *pFsm, void *pParam, void **ppReader) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode         *pVnode = pFsm->data;
   SSnapshotParam *pSnapshotParam = pParam;
@@ -361,7 +344,7 @@ static int32_t vnodeSnapshotStartRead(struct SSyncFSM *pFsm, void *pParam, void
 #endif
 }
 
-static int32_t vnodeSnapshotStopRead(struct SSyncFSM *pFsm, void *pReader) {
+static int32_t vnodeSnapshotStopRead(const SSyncFSM *pFsm, void *pReader) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   int32_t code = vnodeSnapReaderClose(pReader);
@@ -372,7 +355,7 @@ static int32_t vnodeSnapshotStopRead(struct SSyncFSM *pFsm, void *pReader) {
 #endif
 }
 
-static int32_t vnodeSnapshotDoRead(struct SSyncFSM *pFsm, void *pReader, void **ppBuf, int32_t *len) {
+static int32_t vnodeSnapshotDoRead(const SSyncFSM *pFsm, void *pReader, void **ppBuf, int32_t *len) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   int32_t code = vnodeSnapRead(pReader, (uint8_t **)ppBuf, len);
@@ -391,7 +374,7 @@ static int32_t vnodeSnapshotDoRead(struct SSyncFSM *pFsm, void *pReader, void **
 #endif
 }
 
-static int32_t vnodeSnapshotStartWrite(struct SSyncFSM *pFsm, void *pParam, void **ppWriter) {
+static int32_t vnodeSnapshotStartWrite(const SSyncFSM *pFsm, void *pParam, void **ppWriter) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode         *pVnode = pFsm->data;
   SSnapshotParam *pSnapshotParam = pParam;
@@ -415,7 +398,7 @@ static int32_t vnodeSnapshotStartWrite(struct SSyncFSM *pFsm, void *pParam, void
 #endif
 }
 
-static int32_t vnodeSnapshotStopWrite(struct SSyncFSM *pFsm, void *pWriter, bool isApply, SSnapshot *pSnapshot) {
+static int32_t vnodeSnapshotStopWrite(const SSyncFSM *pFsm, void *pWriter, bool isApply, SSnapshot *pSnapshot) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   vInfo("vgId:%d, stop write vnode snapshot, apply:%d, index:%" PRId64 " term:%" PRIu64 " config:%" PRId64,
@@ -430,7 +413,7 @@ static int32_t vnodeSnapshotStopWrite(struct SSyncFSM *pFsm, void *pWriter, bool
 #endif
 }
 
-static int32_t vnodeSnapshotDoWrite(struct SSyncFSM *pFsm, void *pWriter, void *pBuf, int32_t len) {
+static int32_t vnodeSnapshotDoWrite(const SSyncFSM *pFsm, void *pWriter, void *pBuf, int32_t len) {
 #ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   vDebug("vgId:%d, continue write vnode snapshot, len:%d", pVnode->config.vgId, len);
@@ -442,9 +425,7 @@ static int32_t vnodeSnapshotDoWrite(struct SSyncFSM *pFsm, void *pWriter, void *
 #endif
 }
 
-static void vnodeLeaderTransfer(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbMeta) {}
-
-static void vnodeRestoreFinish(struct SSyncFSM *pFsm) {
+static void vnodeRestoreFinish(const SSyncFSM *pFsm) {
   SVnode *pVnode = pFsm->data;
 
   do {
@@ -464,7 +445,7 @@ static void vnodeRestoreFinish(struct SSyncFSM *pFsm) {
   vDebug("vgId:%d, sync restore finished", pVnode->config.vgId);
 }
 
-static void vnodeBecomeFollower(struct SSyncFSM *pFsm) {
+static void vnodeBecomeFollower(const SSyncFSM *pFsm) {
   SVnode *pVnode = pFsm->data;
   vDebug("vgId:%d, become follower", pVnode->config.vgId);
 
@@ -478,7 +459,7 @@ static void vnodeBecomeFollower(struct SSyncFSM *pFsm) {
   taosThreadMutexUnlock(&pVnode->lock);
 }
 
-static void vnodeBecomeLeader(struct SSyncFSM *pFsm) {
+static void vnodeBecomeLeader(const SSyncFSM *pFsm) {
   SVnode *pVnode = pFsm->data;
   vDebug("vgId:%d, become leader", pVnode->config.vgId);
 
@@ -500,10 +481,10 @@ static SSyncFSM *vnodeSyncMakeFsm(SVnode *pVnode) {
   pFsm->FpRollBackCb = vnodeSyncRollBackMsg;
   pFsm->FpGetSnapshotInfo = vnodeSyncGetSnapshot;
   pFsm->FpRestoreFinishCb = vnodeRestoreFinish;
-  pFsm->FpLeaderTransferCb = vnodeLeaderTransfer;
+  pFsm->FpLeaderTransferCb = NULL;
   pFsm->FpBecomeLeaderCb = vnodeBecomeLeader;
   pFsm->FpBecomeFollowerCb = vnodeBecomeFollower;
-  pFsm->FpReConfigCb = vnodeSyncReconfig;
+  pFsm->FpReConfigCb = NULL;
   pFsm->FpSnapshotStartRead = vnodeSnapshotStartRead;
   pFsm->FpSnapshotStopRead = vnodeSnapshotStopRead;
   pFsm->FpSnapshotDoRead = vnodeSnapshotDoRead;
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 69c8feb256..b3edc2ca73 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -737,30 +737,7 @@ void syncGetRetryEpSet(int64_t rid, SEpSet* pEpSet) {
   syncNodeRelease(pSyncNode);
 }
 
-int32_t syncGetRespRpc(int64_t rid, uint64_t index, SRpcMsg* msg) {
-  SSyncNode* pSyncNode = syncNodeAcquire(rid);
-  if (pSyncNode == NULL) {
-    return TAOS_SYNC_STATE_ERROR;
-  }
-  ASSERT(rid == pSyncNode->rid);
-
-  SRespStub stub;
-  int32_t   ret = syncRespMgrGet(pSyncNode->pSyncRespMgr, index, &stub);
-  if (ret == 1) {
-    memcpy(msg, &(stub.rpcMsg), sizeof(SRpcMsg));
-  }
-
-  syncNodeRelease(pSyncNode);
-  return ret;
-}
-
-int32_t syncGetAndDelRespRpc(int64_t rid, uint64_t index, SRpcHandleInfo* pInfo) {
-  SSyncNode* pSyncNode = syncNodeAcquire(rid);
-  if (pSyncNode == NULL) {
-    return TAOS_SYNC_STATE_ERROR;
-  }
-  ASSERT(rid == pSyncNode->rid);
-
+static void syncGetAndDelRespRpc(SSyncNode* pSyncNode, uint64_t index, SRpcHandleInfo* pInfo) {
   SRespStub stub;
   int32_t   ret = syncRespMgrGetAndDel(pSyncNode->pSyncRespMgr, index, &stub);
   if (ret == 1) {
@@ -768,8 +745,6 @@ int32_t syncGetAndDelRespRpc(int64_t rid, uint64_t index, SRpcHandleInfo* pInfo)
   }
 
   sTrace("vgId:%d, get seq:%" PRIu64 " rpc handle:%p", pSyncNode->vgId, index, pInfo->handle);
-  syncNodeRelease(pSyncNode);
-  return ret;
 }
 
 void syncSetMsgCb(int64_t rid, const SMsgCb* msgcb) {
@@ -3127,17 +3102,18 @@ int32_t syncDoLeaderTransfer(SSyncNode* ths, SRpcMsg* pRpcMsg, SSyncRaftEntry* p
   }
 
   if (ths->pFsm->FpLeaderTransferCb != NULL) {
-    SFsmCbMeta cbMeta = {0};
-    cbMeta.code = 0;
-    cbMeta.currentTerm = ths->pRaftStore->currentTerm;
-    cbMeta.flag = 0;
-    cbMeta.index = pEntry->index;
-    cbMeta.lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, cbMeta.index);
-    cbMeta.isWeak = pEntry->isWeak;
-    cbMeta.seqNum = pEntry->seqNum;
-    cbMeta.state = ths->state;
-    cbMeta.term = pEntry->term;
-    ths->pFsm->FpLeaderTransferCb(ths->pFsm, pRpcMsg, cbMeta);
+    SFsmCbMeta cbMeta = {
+        cbMeta.code = 0,
+        cbMeta.currentTerm = ths->pRaftStore->currentTerm,
+        cbMeta.flag = 0,
+        cbMeta.index = pEntry->index,
+        cbMeta.lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, pEntry->index),
+        cbMeta.isWeak = pEntry->isWeak,
+        cbMeta.seqNum = pEntry->seqNum,
+        cbMeta.state = ths->state,
+        cbMeta.term = pEntry->term,
+    };
+    ths->pFsm->FpLeaderTransferCb(ths->pFsm, pRpcMsg, &cbMeta);
   }
 
   syncLeaderTransferDestroy(pSyncLeaderTransfer);
@@ -3314,18 +3290,20 @@ int32_t syncNodeDoCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endInde
 
           // execute fsm in apply thread, or execute outside syncPropose
           if (internalExecute) {
-            SFsmCbMeta cbMeta = {0};
-            cbMeta.index = pEntry->index;
-            cbMeta.lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, cbMeta.index);
-            cbMeta.isWeak = pEntry->isWeak;
-            cbMeta.code = 0;
-            cbMeta.state = ths->state;
-            cbMeta.seqNum = pEntry->seqNum;
-            cbMeta.term = pEntry->term;
-            cbMeta.currentTerm = ths->pRaftStore->currentTerm;
-            cbMeta.flag = flag;
+            SFsmCbMeta cbMeta = {
+                .index = pEntry->index,
+                .lastConfigIndex = syncNodeGetSnapshotConfigIndex(ths, pEntry->index),
+                .isWeak = pEntry->isWeak,
+                .code = 0,
+                .state = ths->state,
+                .seqNum = pEntry->seqNum,
+                .term = pEntry->term,
+                .currentTerm = ths->pRaftStore->currentTerm,
+                .flag = flag,
+            };
 
-            ths->pFsm->FpCommitCb(ths->pFsm, &rpcMsg, cbMeta);
+            syncGetAndDelRespRpc(ths, cbMeta.seqNum, &rpcMsg.info);
+            ths->pFsm->FpCommitCb(ths->pFsm, &rpcMsg, &cbMeta);
           }
         }