diff --git a/include/common/tglobal.h b/include/common/tglobal.h
index fc3d575317..f253d31963 100644
--- a/include/common/tglobal.h
+++ b/include/common/tglobal.h
@@ -121,6 +121,10 @@ extern char     tsCompressor[];
 extern int32_t  tsDiskCfgNum;
 extern SDiskCfg tsDiskCfg[];
 
+// internal 
+extern int32_t tsTransPullupMs;
+extern int32_t tsMaRebalanceMs;
+
 #define NEEDTO_COMPRESSS_MSG(size) (tsCompressMsgSize != -1 && (size) > tsCompressMsgSize)
 
 int32_t taosCreateLog(const char *logname, int32_t logFileNum, const char *cfgDir, const char **envCmd, const char *envFile,
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index bbf14b2fdc..4470f5b0a3 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -169,6 +169,10 @@ uint32_t tsMaxRange = 500;                      // max range
 uint32_t tsCurRange = 100;                      // range
 char     tsCompressor[32] = "ZSTD_COMPRESSOR";  // ZSTD_COMPRESSOR or GZIP_COMPRESSOR
 
+// internal
+int32_t tsTransPullupMs = 6000;
+int32_t tsMaRebalanceMs = 2000;
+
 void taosAddDataDir(int32_t index, char *v1, int32_t level, int32_t primary) {
   tstrncpy(tsDiskCfg[index].dir, v1, TSDB_FILENAME_LEN);
   tsDiskCfg[index].level = level;
diff --git a/source/common/src/tmsgcb.c b/source/common/src/tmsgcb.c
index c9cbb73884..42612cecb9 100644
--- a/source/common/src/tmsgcb.c
+++ b/source/common/src/tmsgcb.c
@@ -15,37 +15,83 @@
 
 #define _DEFAULT_SOURCE
 #include "tmsgcb.h"
+#include "taoserror.h"
 
 static SMsgCb tsDefaultMsgCb;
 
 void tmsgSetDefaultMsgCb(const SMsgCb* pMsgCb) { tsDefaultMsgCb = *pMsgCb; }
 
 int32_t tmsgPutToQueue(const SMsgCb* pMsgCb, EQueueType qtype, SRpcMsg* pReq) {
-  return (*pMsgCb->queueFps[qtype])(pMsgCb->pWrapper, pReq);
+  PutToQueueFp fp = pMsgCb->queueFps[qtype];
+  if (fp != NULL) {
+    return (*fp)(pMsgCb->pWrapper, pReq);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
 }
 
 int32_t tmsgGetQueueSize(const SMsgCb* pMsgCb, int32_t vgId, EQueueType qtype) {
-  return (*pMsgCb->qsizeFp)(pMsgCb->pWrapper, vgId, qtype);
+  GetQueueSizeFp fp = pMsgCb->qsizeFp;
+  if (fp != NULL) {
+    return (*fp)(pMsgCb->pWrapper, vgId, qtype);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
 }
 
 int32_t tmsgSendReq(const SMsgCb* pMsgCb, const SEpSet* epSet, SRpcMsg* pReq) {
-  return (*pMsgCb->sendReqFp)(pMsgCb->pWrapper, epSet, pReq);
+  SendReqFp fp = pMsgCb->sendReqFp;
+  if (fp != NULL) {
+    return (*fp)(pMsgCb->pWrapper, epSet, pReq);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+    return -1;
+  }
 }
 
-void tmsgSendRsp(const SRpcMsg* pRsp) { return (*tsDefaultMsgCb.sendRspFp)(tsDefaultMsgCb.pWrapper, pRsp); }
+void tmsgSendRsp(const SRpcMsg* pRsp) {
+  SendRspFp fp = tsDefaultMsgCb.sendRspFp;
+  if (fp != NULL) {
+    return (*fp)(tsDefaultMsgCb.pWrapper, pRsp);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+  }
+}
 
 void tmsgSendRedirectRsp(const SRpcMsg* pRsp, const SEpSet* pNewEpSet) {
-  return (*tsDefaultMsgCb.sendRedirectRspFp)(tsDefaultMsgCb.pWrapper, pRsp, pNewEpSet);
+  SendRedirectRspFp fp = tsDefaultMsgCb.sendRedirectRspFp;
+  if (fp != NULL) {
+    (*fp)(tsDefaultMsgCb.pWrapper, pRsp, pNewEpSet);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+  }
 }
 
 void tmsgRegisterBrokenLinkArg(const SMsgCb* pMsgCb, SRpcMsg* pMsg) {
-  (*pMsgCb->registerBrokenLinkArgFp)(pMsgCb->pWrapper, pMsg);
+  RegisterBrokenLinkArgFp fp = pMsgCb->registerBrokenLinkArgFp;
+  if (fp != NULL) {
+    (*fp)(pMsgCb->pWrapper, pMsg);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+  }
 }
 
 void tmsgReleaseHandle(void* handle, int8_t type) {
-  (*tsDefaultMsgCb.releaseHandleFp)(tsDefaultMsgCb.pWrapper, handle, type);
+  ReleaseHandleFp fp = tsDefaultMsgCb.releaseHandleFp;
+  if (fp != NULL) {
+    (*fp)(tsDefaultMsgCb.pWrapper, handle, type);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+  }
 }
 
 void tmsgReportStartup(const char* name, const char* desc) {
-  (*tsDefaultMsgCb.reportStartupFp)(tsDefaultMsgCb.pWrapper, name, desc);
+  ReportStartup fp = tsDefaultMsgCb.reportStartupFp;
+  if (fp != NULL && tsDefaultMsgCb.pWrapper != NULL) {
+    (*fp)(tsDefaultMsgCb.pWrapper, name, desc);
+  } else {
+    terrno = TSDB_CODE_INVALID_PTR;
+  }
 }
\ No newline at end of file
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index e80a16b16e..6110d0be44 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -1126,7 +1126,7 @@ static bool mndTransPerformCommitLogStage(SMnode *pMnode, STrans *pTrans) {
   } else {
     pTrans->code = terrno;
     pTrans->failedTimes++;
-    mError("trans:%d, stage keep on commitLog since %s", pTrans->id, terrstr());
+    mError("trans:%d, stage keep on commitLog since %s, failedTimes:%d", pTrans->id, terrstr(), pTrans->failedTimes);
     continueExec = false;
   }
 
@@ -1162,7 +1162,7 @@ static bool mndTransPerformUndoActionStage(SMnode *pMnode, STrans *pTrans) {
     continueExec = false;
   } else {
     pTrans->failedTimes++;
-    mError("trans:%d, stage keep on undoAction since %s", pTrans->id, terrstr());
+    mError("trans:%d, stage keep on undoAction since %s, failedTimes:%d", pTrans->id, terrstr(), pTrans->failedTimes);
     continueExec = false;
   }
 
@@ -1179,7 +1179,7 @@ static bool mndTransPerformRollbackStage(SMnode *pMnode, STrans *pTrans) {
     continueExec = true;
   } else {
     pTrans->failedTimes++;
-    mError("trans:%d, stage keep on rollback since %s", pTrans->id, terrstr());
+    mError("trans:%d, stage keep on rollback since %s, failedTimes:%d", pTrans->id, terrstr(), pTrans->failedTimes);
     continueExec = false;
   }
 
diff --git a/source/dnode/mnode/impl/src/mnode.c b/source/dnode/mnode/impl/src/mnode.c
index b38fd6178c..e2814e95f0 100644
--- a/source/dnode/mnode/impl/src/mnode.c
+++ b/source/dnode/mnode/impl/src/mnode.c
@@ -43,9 +43,6 @@
 #include "mndUser.h"
 #include "mndVgroup.h"
 
-#define MQ_TIMER_MS    2000
-#define TRNAS_TIMER_MS 6000
-
 static void *mndBuildTimerMsg(int32_t *pContLen) {
   SMTimerReq timerReq = {0};
 
@@ -68,7 +65,7 @@ static void mndPullupTrans(void *param, void *tmrId) {
     tmsgPutToQueue(&pMnode->msgCb, WRITE_QUEUE, &rpcMsg);
   }
 
-  taosTmrReset(mndPullupTrans, TRNAS_TIMER_MS, pMnode, pMnode->timer, &pMnode->transTimer);
+  taosTmrReset(mndPullupTrans, tsTransPullupMs, pMnode, pMnode->timer, &pMnode->transTimer);
 }
 
 static void mndCalMqRebalance(void *param, void *tmrId) {
@@ -84,7 +81,7 @@ static void mndCalMqRebalance(void *param, void *tmrId) {
     tmsgPutToQueue(&pMnode->msgCb, READ_QUEUE, &rpcMsg);
   }
 
-  taosTmrReset(mndCalMqRebalance, MQ_TIMER_MS, pMnode, pMnode->timer, &pMnode->mqTimer);
+  taosTmrReset(mndCalMqRebalance, tsMaRebalanceMs, pMnode, pMnode->timer, &pMnode->mqTimer);
 }
 
 static void mndPullupTelem(void *param, void *tmrId) {
@@ -106,12 +103,12 @@ static int32_t mndInitTimer(SMnode *pMnode) {
     return -1;
   }
 
-  if (taosTmrReset(mndPullupTrans, TRNAS_TIMER_MS, pMnode, pMnode->timer, &pMnode->transTimer)) {
+  if (taosTmrReset(mndPullupTrans, tsTransPullupMs, pMnode, pMnode->timer, &pMnode->transTimer)) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
-  if (taosTmrReset(mndCalMqRebalance, MQ_TIMER_MS, pMnode, pMnode->timer, &pMnode->mqTimer)) {
+  if (taosTmrReset(mndCalMqRebalance, tsMaRebalanceMs, pMnode, pMnode->timer, &pMnode->mqTimer)) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
diff --git a/source/dnode/mnode/impl/test/trans/trans2.cpp b/source/dnode/mnode/impl/test/trans/trans2.cpp
index aaf2c649e4..1fabf677c4 100644
--- a/source/dnode/mnode/impl/test/trans/trans2.cpp
+++ b/source/dnode/mnode/impl/test/trans/trans2.cpp
@@ -58,9 +58,12 @@ class MndTestTrans2 : public ::testing::Test {
     strcpy(opt.replicas[0].fqdn, "localhost");
     opt.msgCb = msgCb;
 
+    tsTransPullupMs = 1000;
+
     const char *mnodepath = "/tmp/mnode_test_trans";
     taosRemoveDir(mnodepath);
     pMnode = mndOpen(mnodepath, &opt);
+    mndStart(pMnode);
   }
 
   static void SetUpTestSuite() {
@@ -70,6 +73,7 @@ class MndTestTrans2 : public ::testing::Test {
   }
 
   static void TearDownTestSuite() {
+    mndStop(pMnode);
     mndClose(pMnode);
     walCleanUp();
     taosCloseLog();
@@ -128,4 +132,6 @@ TEST_F(MndTestTrans2, 01_CbFunc) {
   EXPECT_EQ(CreateUser(acct_invalid, user2), 0);
   pUser2 = mndAcquireUser(pMnode, user2);
   ASSERT_EQ(pUser2, nullptr);
+
+  mndTransPullup(pMnode);
 }