diff --git a/src/dnode/src/dnodeMPeer.c b/src/dnode/src/dnodeMPeer.c
index 536ebdb26802dd81451b27b67cf6e7ce279c5bb8..b5ecc4930fd87c706b1adb8f4d20dbb7b0a5d419 100644
--- a/src/dnode/src/dnodeMPeer.c
+++ b/src/dnode/src/dnodeMPeer.c
@@ -124,13 +124,12 @@ void dnodeFreeMPeerQueue() {
 void dnodeDispatchToMPeerQueue(SRpcMsg *pMsg) {
   if (!mnodeIsRunning() || tsMPeerQueue == NULL) {
     dnodeSendRedirectMsg(pMsg, false);
-    rpcFreeCont(pMsg->pCont);
-    return;
+  } else {
+    SMnodeMsg *pPeer = mnodeCreateMsg(pMsg);
+    taosWriteQitem(tsMPeerQueue, TAOS_QTYPE_RPC, pPeer);
   }
 
-  SMnodeMsg *pPeer = taosAllocateQitem(sizeof(SMnodeMsg));
-  mnodeCreateMsg(pPeer, pMsg);
-  taosWriteQitem(tsMPeerQueue, TAOS_QTYPE_RPC, pPeer);
+  rpcFreeCont(pMsg->pCont);
 }
 
 static void dnodeFreeMPeerMsg(SMnodeMsg *pPeer) {
diff --git a/src/dnode/src/dnodeMRead.c b/src/dnode/src/dnodeMRead.c
index 1a54dd1ecda42709197443f00b4b02fe8d19a719..c14c7a81586d306ff1423e8dba91e0844293c407 100644
--- a/src/dnode/src/dnodeMRead.c
+++ b/src/dnode/src/dnodeMRead.c
@@ -125,13 +125,12 @@ void dnodeFreeMReadQueue() {
 void dnodeDispatchToMReadQueue(SRpcMsg *pMsg) {
   if (!mnodeIsRunning() || tsMReadQueue == NULL) {
     dnodeSendRedirectMsg(pMsg, true);
-    rpcFreeCont(pMsg->pCont);
-    return;
+  } else {
+    SMnodeMsg *pRead = mnodeCreateMsg(pMsg);
+    taosWriteQitem(tsMReadQueue, TAOS_QTYPE_RPC, pRead);
   }
 
-  SMnodeMsg *pRead = taosAllocateQitem(sizeof(SMnodeMsg));
-  mnodeCreateMsg(pRead, pMsg);
-  taosWriteQitem(tsMReadQueue, TAOS_QTYPE_RPC, pRead);
+  rpcFreeCont(pMsg->pCont);
 }
 
 static void dnodeFreeMReadMsg(SMnodeMsg *pRead) {
diff --git a/src/dnode/src/dnodeMWrite.c b/src/dnode/src/dnodeMWrite.c
index 5bf485d61063a783680e45a6979f803b185c535b..3940a251d4fbe481473b99ca8bd7be2d1a92980e 100644
--- a/src/dnode/src/dnodeMWrite.c
+++ b/src/dnode/src/dnodeMWrite.c
@@ -125,16 +125,14 @@ void dnodeFreeMWritequeue() {
 void dnodeDispatchToMWriteQueue(SRpcMsg *pMsg) {
   if (!mnodeIsRunning() || tsMWriteQueue == NULL) {
     dnodeSendRedirectMsg(pMsg, true);
-    rpcFreeCont(pMsg->pCont);
-    return;
+  } else {
+    SMnodeMsg *pWrite = mnodeCreateMsg(pMsg);
+    dDebug("app:%p:%p, msg:%s is put into mwrite queue:%p", pWrite->rpcMsg.ahandle, pWrite,
+           taosMsg[pWrite->rpcMsg.msgType], tsMWriteQueue);
+    taosWriteQitem(tsMWriteQueue, TAOS_QTYPE_RPC, pWrite);
   }
 
-  SMnodeMsg *pWrite = taosAllocateQitem(sizeof(SMnodeMsg));
-  mnodeCreateMsg(pWrite, pMsg);
-
-  dDebug("app:%p:%p, msg:%s is put into mwrite queue:%p", pWrite->rpcMsg.ahandle, pWrite,
-         taosMsg[pWrite->rpcMsg.msgType], tsMWriteQueue);
-  taosWriteQitem(tsMWriteQueue, TAOS_QTYPE_RPC, pWrite);
+  rpcFreeCont(pMsg->pCont);
 }
 
 static void dnodeFreeMWriteMsg(SMnodeMsg *pWrite) {
diff --git a/src/dnode/src/dnodeMgmt.c b/src/dnode/src/dnodeMgmt.c
index 4a5dc31a9fc5008b1a1c8288d9798d23acfb98b6..dcb48f7833abf921d1085e1cbb14b9cfbf2aa8b7 100644
--- a/src/dnode/src/dnodeMgmt.c
+++ b/src/dnode/src/dnodeMgmt.c
@@ -47,6 +47,11 @@ typedef struct {
   int32_t * vnodeList;
 } SOpenVnodeThread;
 
+typedef struct {
+  SRpcMsg rpcMsg;
+  char    pCont[];
+} SMgmtMsg;
+
 void *            tsDnodeTmr = NULL;
 static void *     tsStatusTimer = NULL;
 static uint32_t   tsRebootTime;
@@ -172,38 +177,46 @@ void dnodeCleanupMgmt() {
   vnodeCleanupResources();
 }
 
-void dnodeDispatchToMgmtQueue(SRpcMsg *pMsg) {
-  void *item;
+static int32_t dnodeWriteToMgmtQueue(SRpcMsg *pMsg) {
+  int32_t   size = sizeof(SMgmtMsg) + pMsg->contLen;
+  SMgmtMsg *pMgmt = taosAllocateQitem(size);
+  if (pMgmt == NULL) {
+    return TSDB_CODE_DND_OUT_OF_MEMORY;
+  }
 
-  item = taosAllocateQitem(sizeof(SRpcMsg));
-  if (item) {
-    memcpy(item, pMsg, sizeof(SRpcMsg));
-    taosWriteQitem(tsMgmtQueue, 1, item);
-  } else {
-    SRpcMsg rsp = {
-      .handle = pMsg->handle,
-      .pCont  = NULL,
-      .code   = TSDB_CODE_DND_OUT_OF_MEMORY
-    };
-    
+  pMgmt->rpcMsg = *pMsg;
+  pMgmt->rpcMsg.pCont = pMgmt->pCont;
+  memcpy(pMgmt->pCont, pMsg->pCont, pMsg->contLen);
+  taosWriteQitem(tsMgmtQueue, TAOS_QTYPE_RPC, pMgmt);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+void dnodeDispatchToMgmtQueue(SRpcMsg *pMsg) {
+  int32_t code = dnodeWriteToMgmtQueue(pMsg);
+  if (code != TSDB_CODE_SUCCESS) {
+    SRpcMsg rsp = {.handle = pMsg->handle, .code = code};
     rpcSendResponse(&rsp);
-    rpcFreeCont(pMsg->pCont);
   }
+
+  rpcFreeCont(pMsg->pCont);
 }
 
 static void *dnodeProcessMgmtQueue(void *param) {
-  SRpcMsg *pMsg;
-  SRpcMsg  rsp = {0};
-  int      type;
-  void *   handle;
+  SMgmtMsg *pMgmt;
+  SRpcMsg * pMsg;
+  SRpcMsg   rsp = {0};
+  int32_t   qtype;
+  void *    handle;
 
   while (1) {
-    if (taosReadQitemFromQset(tsMgmtQset, &type, (void **) &pMsg, &handle) == 0) {
+    if (taosReadQitemFromQset(tsMgmtQset, &qtype, (void **)&pMgmt, &handle) == 0) {
       dDebug("qset:%p, dnode mgmt got no message from qset, exit", tsMgmtQset);
       break;
     }
 
-    dDebug("%p, msg:%s will be processed", pMsg->ahandle, taosMsg[pMsg->msgType]);    
+    pMsg = &pMgmt->rpcMsg;
+    dDebug("%p, msg:%p:%s will be processed", pMsg->ahandle, pMgmt, taosMsg[pMsg->msgType]);
     if (dnodeProcessMgmtMsgFp[pMsg->msgType]) {
       rsp.code = (*dnodeProcessMgmtMsgFp[pMsg->msgType])(pMsg);
     } else {
@@ -211,10 +224,9 @@ static void *dnodeProcessMgmtQueue(void *param) {
     }
 
     rsp.handle = pMsg->handle;
-    rsp.pCont  = NULL;
+    rsp.pCont = NULL;
     rpcSendResponse(&rsp);
 
-    rpcFreeCont(pMsg->pCont);
     taosFreeQitem(pMsg);
   }
 
diff --git a/src/inc/mnode.h b/src/inc/mnode.h
index 2bf7718058640a8ce7248dde964bbf2a3aae49cb..128e4d35a4d2500ae49fa4e72d90813bc98b414b 100644
--- a/src/inc/mnode.h
+++ b/src/inc/mnode.h
@@ -50,9 +50,10 @@ typedef struct SMnodeMsg {
   int32_t   code;
   void *    pObj;
   SRpcMsg   rpcMsg;
+  char      pCont[];
 } SMnodeMsg;
 
-void    mnodeCreateMsg(SMnodeMsg *pMsg, SRpcMsg *rpcMsg);
+void *  mnodeCreateMsg(SRpcMsg *pRpcMsg);
 int32_t mnodeInitMsg(SMnodeMsg *pMsg);
 void    mnodeCleanupMsg(SMnodeMsg *pMsg);
 
diff --git a/src/mnode/src/mnodeInt.c b/src/mnode/src/mnodeInt.c
index fb1b8741a9f8895c579ad0e549dc8f3c15f7618c..98ba9d1e14c62fc0e59a5cd35c7acbc10a3ec4f1 100644
--- a/src/mnode/src/mnodeInt.c
+++ b/src/mnode/src/mnodeInt.c
@@ -18,7 +18,7 @@
 #include "taosmsg.h"
 #include "taoserror.h"
 #include "trpc.h"
-#include "tcache.h"
+#include "tqueue.h"
 #include "mnode.h"
 #include "dnode.h"
 #include "mnodeDef.h"
@@ -34,8 +34,15 @@
 #include "mnodeUser.h"
 #include "mnodeVgroup.h"
 
-void mnodeCreateMsg(SMnodeMsg *pMsg, SRpcMsg *rpcMsg) {
-  pMsg->rpcMsg = *rpcMsg;
+void *mnodeCreateMsg(SRpcMsg *pRpcMsg) {
+  int32_t    size = sizeof(SMnodeMsg) + pRpcMsg->contLen;
+  SMnodeMsg *pMsg = taosAllocateQitem(size);
+
+  pMsg->rpcMsg = *pRpcMsg;
+  pMsg->rpcMsg.pCont = pMsg->pCont;
+  memcpy(pMsg->pCont, pRpcMsg->pCont, pRpcMsg->contLen);
+
+  return pMsg;
 }
 
 int32_t mnodeInitMsg(SMnodeMsg *pMsg) {
@@ -54,7 +61,6 @@ int32_t mnodeInitMsg(SMnodeMsg *pMsg) {
 
 void mnodeCleanupMsg(SMnodeMsg *pMsg) {
   if (pMsg != NULL) {
-    if (pMsg->rpcMsg.pCont) rpcFreeCont(pMsg->rpcMsg.pCont);
     if (pMsg->pUser) mnodeDecUserRef(pMsg->pUser);
     if (pMsg->pDb) mnodeDecDbRef(pMsg->pDb);
     if (pMsg->pVgroup) mnodeDecVgroupRef(pMsg->pVgroup);