diff --git a/source/dnode/mnode/impl/inc/mndTrans.h b/source/dnode/mnode/impl/inc/mndTrans.h
index 92e86efa9e..5c15e2f987 100644
--- a/source/dnode/mnode/impl/inc/mndTrans.h
+++ b/source/dnode/mnode/impl/inc/mndTrans.h
@@ -30,8 +30,8 @@ void    mndTransDrop(STrans *pTrans);
 int32_t mndTransAppendRedolog(STrans *pTrans, SSdbRaw *pRaw);
 int32_t mndTransAppendUndolog(STrans *pTrans, SSdbRaw *pRaw);
 int32_t mndTransAppendCommitlog(STrans *pTrans, SSdbRaw *pRaw);
-int32_t mndTransAppendRedoAction(STrans *pTrans, SEpSet *pEpSet, SRpcMsg *pMsg);
-int32_t mndTransAppendUndoAction(STrans *pTrans, SEpSet *pEpSet, SRpcMsg *pMsg);
+int32_t mndTransAppendRedoAction(STrans *pTrans, SEpSet *pEpSet, int8_t msgType, int32_t contLen, void *pCont);
+int32_t mndTransAppendUndoAction(STrans *pTrans, SEpSet *pEpSet, int8_t msgType, int32_t contLen, void *pCont);
 int32_t mndTransPrepare(SMnode *pMnode, STrans *pTrans);
 void    mndTransApply(SMnode *pMnode, SSdbRaw *pRaw, STransMsg *pMsg, int32_t code);
 char   *mndTransStageStr(ETrnStage stage);
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index 6decc82743..e85edf66da 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -303,9 +303,8 @@ static int32_t mndSetRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SV
         return -1;
       }
 
-      SRpcMsg rpcMsg = {.msgType = TSDB_MSG_TYPE_ALTER_VNODE_IN, .pCont = pMsg, .contLen = sizeof(SCreateVnodeMsg)};
-      if (mndTransAppendRedoAction(pTrans, &epset, &rpcMsg) != 0) {
-        rpcFreeCont(pMsg);
+      if (mndTransAppendRedoAction(pTrans, &epset, TSDB_MSG_TYPE_ALTER_VNODE_IN, sizeof(SCreateVnodeMsg), pMsg) != 0) {
+        free(pMsg);
         return -1;
       }
     }
@@ -333,9 +332,8 @@ static int32_t mndSetUndoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SV
         return -1;
       }
 
-      SRpcMsg rpcMsg = {.msgType = TSDB_MSG_TYPE_DROP_VNODE_IN, .pCont = pMsg, .contLen = sizeof(SDropVnodeMsg)};
-      if (mndTransAppendUndoAction(pTrans, &epset, &rpcMsg) != 0) {
-        rpcFreeCont(pMsg);
+      if (mndTransAppendUndoAction(pTrans, &epset, TSDB_MSG_TYPE_DROP_VNODE_IN, sizeof(SDropVnodeMsg), pMsg) != 0) {
+        free(pMsg);
         return -1;
       }
     }
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 8399b79921..5caec6c78d 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -23,7 +23,9 @@
 
 typedef struct {
   SEpSet  epSet;
-  SRpcMsg msg;
+  int8_t  msgType;
+  int32_t contLen;
+  void   *pCont;
 } STransAction;
 
 static SSdbRaw *mndTransActionEncode(STrans *pTrans);
@@ -35,10 +37,11 @@ static int32_t  mndTransActionDelete(SSdb *pSdb, STrans *pTrans);
 static void    mndTransSetRpcHandle(STrans *pTrans, void *rpcHandle);
 static void    mndTransSendRpcRsp(STrans *pTrans, int32_t code);
 static int32_t mndTransAppendLog(SArray *pArray, SSdbRaw *pRaw);
-static int32_t mndTransAppendAction(SArray *pArray, SEpSet *pEpSet, SRpcMsg *pMsg);
-static void    mndTransDropLog(SArray *pArray);
-static void    mndTransDropAction(SArray *pArray);
-static int32_t mndTransExecuteArray(SMnode *pMnode, SArray *pArray);
+static int32_t mndTransAppendAction(SArray *pArray, SEpSet *pEpSet, int8_t msgType, int32_t contLen, void *pCont);
+static void    mndTransDropLogs(SArray *pArray);
+static void    mndTransDropActions(SArray *pArray);
+static int32_t mndTransExecuteLogs(SMnode *pMnode, SArray *pArray);
+static int32_t mndTransExecuteActions(SMnode *pMnode, SArray *pArray);
 static int32_t mndTransExecuteRedoLogs(SMnode *pMnode, STrans *pTrans);
 static int32_t mndTransExecuteUndoLogs(SMnode *pMnode, STrans *pTrans);
 static int32_t mndTransExecuteCommitLogs(SMnode *pMnode, STrans *pTrans);
@@ -89,12 +92,12 @@ static SSdbRaw *mndTransActionEncode(STrans *pTrans) {
 
   for (int32_t i = 0; i < redoActionNum; ++i) {
     STransAction *pAction = taosArrayGet(pTrans->redoActions, i);
-    rawDataLen += (sizeof(STransAction) + pAction->msg.contLen);
+    rawDataLen += (sizeof(STransAction) + pAction->contLen);
   }
 
   for (int32_t i = 0; i < undoActionNum; ++i) {
     STransAction *pAction = taosArrayGet(pTrans->undoActions, i);
-    rawDataLen += (sizeof(STransAction) + pAction->msg.contLen);
+    rawDataLen += (sizeof(STransAction) + pAction->contLen);
   }
 
   SSdbRaw *pRaw = sdbAllocRaw(SDB_TRANS, TSDB_TRANS_VER, rawDataLen);
@@ -136,17 +139,17 @@ static SSdbRaw *mndTransActionEncode(STrans *pTrans) {
   for (int32_t i = 0; i < redoActionNum; ++i) {
     STransAction *pAction = taosArrayGet(pTrans->redoActions, i);
     SDB_SET_BINARY(pRaw, dataPos, (void *)&pAction->epSet, sizeof(SEpSet));
-    SDB_SET_INT8(pRaw, dataPos, pAction->msg.msgType)
-    SDB_SET_INT32(pRaw, dataPos, pAction->msg.contLen)
-    SDB_SET_BINARY(pRaw, dataPos, (void *)pAction->msg.pCont, pAction->msg.contLen);
+    SDB_SET_INT8(pRaw, dataPos, pAction->msgType)
+    SDB_SET_INT32(pRaw, dataPos, pAction->contLen)
+    SDB_SET_BINARY(pRaw, dataPos, pAction->pCont, pAction->contLen);
   }
 
   for (int32_t i = 0; i < undoActionNum; ++i) {
     STransAction *pAction = taosArrayGet(pTrans->undoActions, i);
     SDB_SET_BINARY(pRaw, dataPos, (void *)&pAction->epSet, sizeof(SEpSet));
-    SDB_SET_INT8(pRaw, dataPos, pAction->msg.msgType)
-    SDB_SET_INT32(pRaw, dataPos, pAction->msg.contLen)
-    SDB_SET_BINARY(pRaw, dataPos, (void *)pAction->msg.pCont, pAction->msg.contLen);
+    SDB_SET_INT8(pRaw, dataPos, pAction->msgType)
+    SDB_SET_INT32(pRaw, dataPos, pAction->contLen)
+    SDB_SET_BINARY(pRaw, dataPos, (void *)pAction->pCont, pAction->contLen);
   }
 
   SDB_SET_RESERVE(pRaw, dataPos, TSDB_TRN_RESERVE_SIZE)
@@ -247,14 +250,14 @@ static SSdbRow *mndTransActionDecode(SSdbRaw *pRaw) {
   for (int32_t i = 0; i < redoActionNum; ++i) {
     STransAction action = {0};
     SDB_GET_BINARY(pRaw, pRow, dataPos, (void *)&action.epSet, sizeof(SEpSet));
-    SDB_GET_INT8(pRaw, pRow, dataPos, &action.msg.msgType)
-    SDB_GET_INT32(pRaw, pRow, dataPos, &action.msg.contLen)
-    action.msg.pCont = rpcMallocCont(action.msg.contLen);
-    if (action.msg.pCont == NULL) {
+    SDB_GET_INT8(pRaw, pRow, dataPos, &action.msgType)
+    SDB_GET_INT32(pRaw, pRow, dataPos, &action.contLen)
+    action.pCont = malloc(action.contLen);
+    if (action.pCont == NULL) {
       code = TSDB_CODE_OUT_OF_MEMORY;
       goto TRANS_DECODE_OVER;
     }
-    SDB_GET_BINARY(pRaw, pRow, dataPos, action.msg.pCont, action.msg.contLen);
+    SDB_GET_BINARY(pRaw, pRow, dataPos, action.pCont, action.contLen);
 
     void *ret = taosArrayPush(pTrans->redoActions, &action);
     if (ret == NULL) {
@@ -266,14 +269,14 @@ static SSdbRow *mndTransActionDecode(SSdbRaw *pRaw) {
   for (int32_t i = 0; i < undoActionNum; ++i) {
     STransAction action = {0};
     SDB_GET_BINARY(pRaw, pRow, dataPos, (void *)&action.epSet, sizeof(SEpSet));
-    SDB_GET_INT8(pRaw, pRow, dataPos, &action.msg.msgType)
-    SDB_GET_INT32(pRaw, pRow, dataPos, &action.msg.contLen)
-    action.msg.pCont = rpcMallocCont(action.msg.contLen);
-    if (action.msg.pCont == NULL) {
+    SDB_GET_INT8(pRaw, pRow, dataPos, &action.msgType)
+    SDB_GET_INT32(pRaw, pRow, dataPos, &action.contLen)
+    action.pCont = malloc(action.contLen);
+    if (action.pCont == NULL) {
       code = TSDB_CODE_OUT_OF_MEMORY;
       goto TRANS_DECODE_OVER;
     }
-    SDB_GET_BINARY(pRaw, pRow, dataPos, action.msg.pCont, action.msg.contLen);
+    SDB_GET_BINARY(pRaw, pRow, dataPos, action.pCont, action.contLen);
 
     void *ret = taosArrayPush(pTrans->undoActions, &action);
     if (ret == NULL) {
@@ -305,11 +308,11 @@ static int32_t mndTransActionInsert(SSdb *pSdb, STrans *pTrans) {
 static int32_t mndTransActionDelete(SSdb *pSdb, STrans *pTrans) {
   mTrace("trans:%d, perform delete action, stage:%s", pTrans->id, mndTransStageStr(pTrans->stage));
 
-  mndTransDropLog(pTrans->redoLogs);
-  mndTransDropLog(pTrans->undoLogs);
-  mndTransDropLog(pTrans->commitLogs);
-  mndTransDropAction(pTrans->redoActions);
-  mndTransDropAction(pTrans->undoActions);
+  mndTransDropLogs(pTrans->redoLogs);
+  mndTransDropLogs(pTrans->undoLogs);
+  mndTransDropLogs(pTrans->commitLogs);
+  mndTransDropActions(pTrans->redoActions);
+  mndTransDropActions(pTrans->undoActions);
 
   return 0;
 }
@@ -389,7 +392,7 @@ STrans *mndTransCreate(SMnode *pMnode, ETrnPolicy policy, void *rpcHandle) {
   return pTrans;
 }
 
-static void mndTransDropLog(SArray *pArray) {
+static void mndTransDropLogs(SArray *pArray) {
   for (int32_t i = 0; i < pArray->size; ++i) {
     SSdbRaw *pRaw = taosArrayGetP(pArray, i);
     tfree(pRaw);
@@ -398,21 +401,21 @@ static void mndTransDropLog(SArray *pArray) {
   taosArrayDestroy(pArray);
 }
 
-static void mndTransDropAction(SArray *pArray) {
+static void mndTransDropActions(SArray *pArray) {
   for (int32_t i = 0; i < pArray->size; ++i) {
     STransAction *pAction = taosArrayGet(pArray, i);
-    rpcFreeCont(pAction->msg.pCont);
+    free(pAction->pCont);
   }
 
   taosArrayDestroy(pArray);
 }
 
 void mndTransDrop(STrans *pTrans) {
-  mndTransDropLog(pTrans->redoLogs);
-  mndTransDropLog(pTrans->undoLogs);
-  mndTransDropLog(pTrans->commitLogs);
-  mndTransDropAction(pTrans->redoActions);
-  mndTransDropAction(pTrans->undoActions);
+  mndTransDropLogs(pTrans->redoLogs);
+  mndTransDropLogs(pTrans->undoLogs);
+  mndTransDropLogs(pTrans->commitLogs);
+  mndTransDropActions(pTrans->redoActions);
+  mndTransDropActions(pTrans->undoActions);
 
   mDebug("trans:%d, data:%p is dropped", pTrans->id, pTrans);
   tfree(pTrans);
@@ -456,8 +459,8 @@ int32_t mndTransAppendCommitlog(STrans *pTrans, SSdbRaw *pRaw) {
   return code;
 }
 
-static int32_t mndTransAppendAction(SArray *pArray, SEpSet *pEpSet, SRpcMsg *pMsg) {
-  STransAction action = {.epSet = *pEpSet, .msg = *pMsg};
+static int32_t mndTransAppendAction(SArray *pArray, SEpSet *pEpSet, int8_t msgType, int32_t contLen, void *pCont) {
+  STransAction action = {.epSet = *pEpSet, .msgType = msgType, .contLen = contLen, .pCont = pCont};
 
   void *ptr = taosArrayPush(pArray, &action);
   if (ptr == NULL) {
@@ -468,15 +471,15 @@ static int32_t mndTransAppendAction(SArray *pArray, SEpSet *pEpSet, SRpcMsg *pMs
   return 0;
 }
 
-int32_t mndTransAppendRedoAction(STrans *pTrans, SEpSet *pEpSet, SRpcMsg *pMsg) {
-  int32_t code = mndTransAppendAction(pTrans->redoActions, pEpSet, pMsg);
-  mTrace("trans:%d, msg:%p append to redo actions", pTrans->id, pMsg);
+int32_t mndTransAppendRedoAction(STrans *pTrans, SEpSet *pEpSet, int8_t msgType, int32_t contLen, void *pCont) {
+  int32_t code = mndTransAppendAction(pTrans->redoActions, pEpSet, msgType, contLen, pCont);
+  mTrace("trans:%d, msg:%s len:%d append to redo actions", pTrans->id, taosMsg[msgType], contLen);
   return code;
 }
 
-int32_t mndTransAppendUndoAction(STrans *pTrans, SEpSet *pEpSet, SRpcMsg *pMsg) {
-  int32_t code = mndTransAppendAction(pTrans->undoActions, pEpSet, pMsg);
-  mTrace("trans:%d, msg:%p append to undo actions", pTrans->id, pMsg);
+int32_t mndTransAppendUndoAction(STrans *pTrans, SEpSet *pEpSet, int8_t msgType, int32_t contLen, void *pCont) {
+  int32_t code = mndTransAppendAction(pTrans->undoActions, pEpSet, msgType, contLen, pCont);
+  mTrace("trans:%d, msg:%s len:%d append to undo actions", pTrans->id, taosMsg[msgType], contLen);
   return code;
 }
 
@@ -593,7 +596,7 @@ void mndTransApply(SMnode *pMnode, SSdbRaw *pRaw, STransMsg *pMsg, int32_t code)
   // todo
 }
 
-static int32_t mndTransExecuteArray(SMnode *pMnode, SArray *pArray) {
+static int32_t mndTransExecuteLogs(SMnode *pMnode, SArray *pArray) {
   SSdb   *pSdb = pMnode->pSdb;
   int32_t arraySize = taosArrayGetSize(pArray);
 
@@ -611,7 +614,7 @@ static int32_t mndTransExecuteArray(SMnode *pMnode, SArray *pArray) {
 static int32_t mndTransExecuteRedoLogs(SMnode *pMnode, STrans *pTrans) {
   int32_t code = 0;
   if (taosArrayGetSize(pTrans->redoLogs) != 0) {
-    code = mndTransExecuteArray(pMnode, pTrans->redoLogs);
+    code = mndTransExecuteLogs(pMnode, pTrans->redoLogs);
     if (code != 0) {
       mError("trans:%d, failed to execute redo logs since %s", pTrans->id, terrstr())
     } else {
@@ -625,7 +628,7 @@ static int32_t mndTransExecuteRedoLogs(SMnode *pMnode, STrans *pTrans) {
 static int32_t mndTransExecuteUndoLogs(SMnode *pMnode, STrans *pTrans) {
   int32_t code = 0;
   if (taosArrayGetSize(pTrans->undoLogs) != 0) {
-    code = mndTransExecuteArray(pMnode, pTrans->undoLogs);
+    code = mndTransExecuteLogs(pMnode, pTrans->undoLogs);
     if (code != 0) {
       mError("trans:%d, failed to execute undo logs since %s", pTrans->id, terrstr())
     } else {
@@ -639,7 +642,7 @@ static int32_t mndTransExecuteUndoLogs(SMnode *pMnode, STrans *pTrans) {
 static int32_t mndTransExecuteCommitLogs(SMnode *pMnode, STrans *pTrans) {
   int32_t code = 0;
   if (taosArrayGetSize(pTrans->commitLogs) != 0) {
-    code = mndTransExecuteArray(pMnode, pTrans->commitLogs);
+    code = mndTransExecuteLogs(pMnode, pTrans->commitLogs);
     if (code != 0) {
       mError("trans:%d, failed to execute commit logs since %s", pTrans->id, terrstr())
     } else {
@@ -651,36 +654,39 @@ static int32_t mndTransExecuteCommitLogs(SMnode *pMnode, STrans *pTrans) {
 }
 
 static int32_t mndTransExecuteActions(SMnode *pMnode, SArray *pArray) {
-  SSdb   *pSdb = pMnode->pSdb;
+#if 0
   int32_t arraySize = taosArrayGetSize(pArray);
-
   for (int32_t i = 0; i < arraySize; ++i) {
-    SSdbRaw *pRaw = taosArrayGetP(pArray, i);
-    int32_t  code = sdbWriteNotFree(pSdb, pRaw);
-    if (code != 0) {
-      return code;
+    STransAction *pAction = taosArrayGet(pArray, i);
+
+    SRpcMsg rpcMsg = {.msgType = pAction->msgType, .contLen = pAction->contLen};
+    rpcMsg.pCont = rpcMallocCont(pAction->contLen);
+    if (rpcMsg.pCont == NULL) {
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      return -1;
     }
+    memcpy(rpcMsg.pCont, pAction->pCont, pAction->contLen);
+    mndSendMsgToDnode(pMnode, &pAction->epSet, &rpcMsg);
   }
 
+  return TSDB_CODE_MND_ACTION_IN_PROGRESS;
+#else
   return 0;
+#endif
 }
 
 static int32_t mndTransExecuteRedoActions(SMnode *pMnode, STrans *pTrans) {
-  int32_t code = 0;
-  if (taosArrayGetSize(pTrans->redoActions) != 0) {
-    mTrace("trans:%d, execute redo actions finished", pTrans->id);
-  }
+  if (taosArrayGetSize(pTrans->redoActions) <= 0) return 0;
 
-  return code;
+  mTrace("trans:%d, start to execute redo actions", pTrans->id);
+  return mndTransExecuteActions(pMnode, pTrans->redoActions);
 }
 
 static int32_t mndTransExecuteUndoActions(SMnode *pMnode, STrans *pTrans) {
-  int32_t code = 0;
-  if (taosArrayGetSize(pTrans->undoActions) != 0) {
-    mTrace("trans:%d, execute undo actions finished", pTrans->id);
-  }
+  if (taosArrayGetSize(pTrans->undoActions) <= 0) return 0;
 
-  return code;
+  mTrace("trans:%d, start to execute undo actions", pTrans->id);
+  return mndTransExecuteActions(pMnode, pTrans->undoActions);
 }
 
 static int32_t mndTransPerformPrepareStage(SMnode *pMnode, STrans *pTrans) {
diff --git a/source/dnode/mnode/impl/src/mndVgroup.c b/source/dnode/mnode/impl/src/mndVgroup.c
index da37bb06b0..e99fea200b 100644
--- a/source/dnode/mnode/impl/src/mndVgroup.c
+++ b/source/dnode/mnode/impl/src/mndVgroup.c
@@ -158,7 +158,7 @@ void mndReleaseVgroup(SMnode *pMnode, SVgObj *pVgroup) {
 }
 
 SCreateVnodeMsg *mndBuildCreateVnodeMsg(SMnode *pMnode, SDnodeObj *pDnode, SDbObj *pDb, SVgObj *pVgroup) {
-  SCreateVnodeMsg *pCreate = rpcMallocCont(sizeof(SCreateVnodeMsg));
+  SCreateVnodeMsg *pCreate = malloc(sizeof(SCreateVnodeMsg));
   if (pCreate == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return NULL;
@@ -192,7 +192,7 @@ SCreateVnodeMsg *mndBuildCreateVnodeMsg(SMnode *pMnode, SDnodeObj *pDnode, SDbOb
     SVnodeGid *pVgid = &pVgroup->vnodeGid[v];
     SDnodeObj *pVgidDnode = mndAcquireDnode(pMnode, pVgid->dnodeId);
     if (pVgidDnode == NULL) {
-      rpcFreeCont(pCreate);
+      free(pCreate);
       terrno = TSDB_CODE_MND_APP_ERROR;
       return NULL;
     }
@@ -208,7 +208,7 @@ SCreateVnodeMsg *mndBuildCreateVnodeMsg(SMnode *pMnode, SDnodeObj *pDnode, SDbOb
   }
 
   if (pCreate->selfIndex == -1) {
-    rpcFreeCont(pCreate);
+    free(pCreate);
     terrno = TSDB_CODE_MND_APP_ERROR;
     return NULL;
   }
@@ -217,7 +217,7 @@ SCreateVnodeMsg *mndBuildCreateVnodeMsg(SMnode *pMnode, SDnodeObj *pDnode, SDbOb
 }
 
 SDropVnodeMsg *mndBuildDropVnodeMsg(SMnode *pMnode, SDnodeObj *pDnode, SDbObj *pDb, SVgObj *pVgroup) {
-  SDropVnodeMsg *pDrop = rpcMallocCont(sizeof(SDropVnodeMsg));
+  SDropVnodeMsg *pDrop = malloc(sizeof(SDropVnodeMsg));
   if (pDrop == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return NULL;