diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 808c7c8fa648dc00bf18f88ad11f8f869df57b7c..fd00ba6a823316c1fb8b644de97df99a4ab5a92b 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -163,6 +163,12 @@ typedef struct {
   int32_t vgVersion;
 } SBuildUseDBInput;
 
+typedef struct SField {
+  char    name[TSDB_COL_NAME_LEN];
+  uint8_t type;
+  int32_t bytes;
+} SField;
+
 #pragma pack(push, 1)
 
 // null-terminated string instead of char array to avoid too many memory consumption in case of more than 1M tableMeta
@@ -252,16 +258,23 @@ typedef struct SSchema {
 typedef struct {
   char    name[TSDB_TABLE_FNAME_LEN];
   int8_t  igExists;
-  int32_t numOfTags;
   int32_t numOfColumns;
-  SSchema pSchemas[];
+  int32_t numOfTags;
+  SArray* pColumns;
+  SArray* pTags;
 } SMCreateStbReq;
 
+int32_t tSerializeSMCreateStbReq(void** buf, SMCreateStbReq* pReq);
+void*   tDeserializeSMCreateStbReq(void* buf, SMCreateStbReq* pReq);
+
 typedef struct {
   char   name[TSDB_TABLE_FNAME_LEN];
   int8_t igNotExists;
 } SMDropStbReq;
 
+int32_t tSerializeSMDropStbReq(void** buf, SMDropStbReq* pReq);
+void*   tDeserializeSMDropStbReq(void* buf, SMDropStbReq* pReq);
+
 typedef struct {
   char    name[TSDB_TABLE_FNAME_LEN];
   int8_t  alterType;
diff --git a/include/libs/parser/parsenodes.h b/include/libs/parser/parsenodes.h
index d245d04166d90f7015239e5eec0459fb812c9838..292b4ab2c913b9967743531a10841268dd1c5e3c 100644
--- a/include/libs/parser/parsenodes.h
+++ b/include/libs/parser/parsenodes.h
@@ -37,12 +37,6 @@ typedef struct SQueryNode {
 
 #define queryNodeType(nodeptr) (((const SQueryNode*)(nodeptr))->type)
 
-typedef struct SField {
-  char     name[TSDB_COL_NAME_LEN];
-  uint8_t  type;
-  int32_t  bytes;
-} SField;
-
 typedef struct SFieldInfo {
   int16_t     numOfOutput;   // number of column in result
   SField     *final;
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 6f094b20f805664d965a6e9b0cd3e4c429c573ce..6e3bd5fb669cca384e8c163720e60f873a02a713 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -336,3 +336,82 @@ void *tDeserializeSVDropTbReq(void *buf, SVDropTbReq *pReq) {
   buf = taosDecodeFixedU8(buf, &pReq->type);
   return buf;
 }
+
+int32_t tSerializeSMCreateStbReq(void **buf, SMCreateStbReq *pReq) {
+  int32_t tlen = 0;
+
+  tlen += taosEncodeString(buf, pReq->name);
+  tlen += taosEncodeFixedI8(buf, pReq->igExists);
+  tlen += taosEncodeFixedI32(buf, pReq->numOfColumns);
+  tlen += taosEncodeFixedI32(buf, pReq->numOfTags);
+
+  for (int32_t i = 0; i < pReq->numOfColumns; ++i) {
+    SField *pField = taosArrayGet(pReq->pColumns, i);
+    tlen += taosEncodeFixedI8(buf, pField->type);
+    tlen += taosEncodeFixedI32(buf, pField->bytes);
+    tlen += taosEncodeString(buf, pField->name);
+  }
+
+  for (int32_t i = 0; i < pReq->numOfTags; ++i) {
+    SField *pField = taosArrayGet(pReq->pTags, i);
+    tlen += taosEncodeFixedI8(buf, pField->type);
+    tlen += taosEncodeFixedI32(buf, pField->bytes);
+    tlen += taosEncodeString(buf, pField->name);
+  }
+
+  return tlen;
+}
+
+void *tDeserializeSMCreateStbReq(void *buf, SMCreateStbReq *pReq) {
+  buf = taosDecodeStringTo(buf, pReq->name);
+  buf = taosDecodeFixedI8(buf, &pReq->igExists);
+  buf = taosDecodeFixedI32(buf, &pReq->numOfColumns);
+  buf = taosDecodeFixedI32(buf, &pReq->numOfTags);
+
+  pReq->pColumns = taosArrayInit(pReq->numOfColumns, sizeof(SField));
+  pReq->pTags = taosArrayInit(pReq->numOfTags, sizeof(SField));
+  if (pReq->pColumns == NULL || pReq->pTags == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return NULL;
+  }
+
+  for (int32_t i = 0; i < pReq->numOfColumns; ++i) {
+    SField field = {0};
+    buf = taosDecodeFixedI8(buf, &field.type);
+    buf = taosDecodeFixedI32(buf, &field.bytes);
+    buf = taosDecodeStringTo(buf, field.name);
+    if (taosArrayPush(pReq->pColumns, &field) == NULL) {
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      return NULL;
+    }
+  }
+
+  for (int32_t i = 0; i < pReq->numOfTags; ++i) {
+    SField field = {0};
+    buf = taosDecodeFixedI8(buf, &field.type);
+    buf = taosDecodeFixedI32(buf, &field.bytes);
+    buf = taosDecodeStringTo(buf, field.name);
+    if (taosArrayPush(pReq->pTags, &field) == NULL) {
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      return NULL;
+    }
+  }
+
+  return buf;
+}
+
+int32_t tSerializeSMDropStbReq(void **buf, SMDropStbReq *pReq) {
+  int32_t tlen = 0;
+
+  tlen += taosEncodeString(buf, pReq->name);
+  tlen += taosEncodeFixedI8(buf, pReq->igNotExists);
+
+  return tlen;
+}
+
+void *tDeserializeSMDropStbReq(void *buf, SMDropStbReq *pReq) {
+  buf = taosDecodeStringTo(buf, pReq->name);
+  buf = taosDecodeFixedI8(buf, &pReq->igNotExists);
+
+  return buf;
+}
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index c9228ae78552b3c8ebd663629fe8ee981bf4c1e8..b91dc03e48bc1a278b5d330422d872d473284bf6 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -304,8 +304,8 @@ typedef struct {
   int32_t  nextColId;
   int32_t  numOfColumns;
   int32_t  numOfTags;
-  SSchema* pTags;
   SSchema* pColumns;
+  SSchema* pTags;
   SRWLatch lock;
 } SStbObj;
 
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 7b21f33702889d96986f83a507d9c26c5b17ebe8..30f3f550fbbfb36069c441d663bae288503fb349 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -262,7 +262,7 @@ static SDbObj *mndAcquireDbByStb(SMnode *pMnode, const char *stbName) {
   return mndAcquireDb(pMnode, db);
 }
 
-static void *mndBuildCreateStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pStb, int32_t *pContLen) {
+static void *mndBuildVCreateStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pStb, int32_t *pContLen) {
   SName name = {0};
   tNameFromString(&name, pStb->name, T_NAME_ACCT | T_NAME_DB | T_NAME_TABLE);
 
@@ -295,7 +295,7 @@ static void *mndBuildCreateStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pStb
   return pHead;
 }
 
-static void *mndBuildDropStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pStb, int32_t *pContLen) {
+static void *mndBuildVDropStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pStb, int32_t *pContLen) {
   SName name = {0};
   tNameFromString(&name, pStb->name, T_NAME_ACCT | T_NAME_DB | T_NAME_TABLE);
 
@@ -323,14 +323,6 @@ static void *mndBuildDropStbReq(SMnode *pMnode, SVgObj *pVgroup, SStbObj *pStb,
 }
 
 static int32_t mndCheckCreateStbReq(SMCreateStbReq *pCreate) {
-  pCreate->numOfColumns = htonl(pCreate->numOfColumns);
-  pCreate->numOfTags = htonl(pCreate->numOfTags);
-  int32_t totalCols = pCreate->numOfColumns + pCreate->numOfTags;
-  for (int32_t i = 0; i < totalCols; ++i) {
-    SSchema *pSchema = &pCreate->pSchemas[i];
-    pSchema->bytes = htonl(pSchema->bytes);
-  }
-
   if (pCreate->igExists < 0 || pCreate->igExists > 1) {
     terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
     return -1;
@@ -346,18 +338,39 @@ static int32_t mndCheckCreateStbReq(SMCreateStbReq *pCreate) {
     return -1;
   }
 
-  int32_t maxColId = (TSDB_MAX_COLUMNS + TSDB_MAX_TAGS);
-  for (int32_t i = 0; i < totalCols; ++i) {
-    SSchema *pSchema = &pCreate->pSchemas[i];
-    if (pSchema->type < 0) {
+  SField *pField = taosArrayGet(pCreate->pColumns, 0) ;
+  if (pField->type != TSDB_DATA_TYPE_TIMESTAMP) {
+    terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
+    return -1;
+  }
+
+  for (int32_t i = 0; i < pCreate->numOfColumns; ++i) {
+    SField *pField = taosArrayGet(pCreate->pColumns, i);
+    if (pField->type < 0) {
       terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
       return -1;
     }
-    if (pSchema->bytes <= 0) {
+    if (pField->bytes <= 0) {
       terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
       return -1;
     }
-    if (pSchema->name[0] == 0) {
+    if (pField->name[0] == 0) {
+      terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
+      return -1;
+    }
+  }
+
+  for (int32_t i = 0; i < pCreate->numOfTags; ++i) {
+    SField *pField = taosArrayGet(pCreate->pTags, i);
+    if (pField->type < 0) {
+      terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
+      return -1;
+    }
+    if (pField->bytes <= 0) {
+      terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
+      return -1;
+    }
+    if (pField->name[0] == 0) {
       terrno = TSDB_CODE_MND_INVALID_STB_OPTION;
       return -1;
     }
@@ -404,7 +417,7 @@ static int32_t mndSetCreateStbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj
     if (pIter == NULL) break;
     if (pVgroup->dbUid != pDb->uid) continue;
 
-    void *pReq = mndBuildCreateStbReq(pMnode, pVgroup, pStb, &contLen);
+    void *pReq = mndBuildVCreateStbReq(pMnode, pVgroup, pStb, &contLen);
     if (pReq == NULL) {
       sdbCancelFetch(pSdb, pIter);
       sdbRelease(pSdb, pVgroup);
@@ -440,7 +453,7 @@ static int32_t mndSetCreateStbUndoActions(SMnode *pMnode, STrans *pTrans, SDbObj
     if (pVgroup->dbUid != pDb->uid) continue;
 
     int32_t contLen = 0;
-    void   *pReq = mndBuildDropStbReq(pMnode, pVgroup, pStb, &contLen);
+    void   *pReq = mndBuildVDropStbReq(pMnode, pVgroup, pStb, &contLen);
     if (pReq == NULL) {
       sdbCancelFetch(pSdb, pIter);
       sdbRelease(pSdb, pVgroup);
@@ -485,16 +498,23 @@ static int32_t mndCreateStb(SMnode *pMnode, SMnodeMsg *pReq, SMCreateStbReq *pCr
     return -1;
   }
 
-  memcpy(stbObj.pColumns, pCreate->pSchemas, stbObj.numOfColumns * sizeof(SSchema));
-  memcpy(stbObj.pTags, pCreate->pSchemas + stbObj.numOfColumns, stbObj.numOfTags * sizeof(SSchema));
-
   for (int32_t i = 0; i < stbObj.numOfColumns; ++i) {
-    stbObj.pColumns[i].colId = stbObj.nextColId;
+    SField  *pField = taosArrayGet(pCreate->pColumns, i);
+    SSchema *pSchema = &stbObj.pColumns[i];
+    pSchema->type = pField->type;
+    pSchema->bytes = pField->bytes;
+    memcpy(pSchema->name, pField->name, TSDB_COL_NAME_LEN);
+    pSchema->colId = stbObj.nextColId;
     stbObj.nextColId++;
   }
 
   for (int32_t i = 0; i < stbObj.numOfTags; ++i) {
-    stbObj.pTags[i].colId = stbObj.nextColId;
+    SField  *pField = taosArrayGet(pCreate->pTags, i);
+    SSchema *pSchema = &stbObj.pTags[i];
+    pSchema->type = pField->type;
+    pSchema->bytes = pField->bytes;
+    memcpy(pSchema->name, pField->name, TSDB_COL_NAME_LEN);
+    pSchema->colId = stbObj.nextColId;
     stbObj.nextColId++;
   }
 
@@ -519,57 +539,60 @@ CREATE_STB_OVER:
 }
 
 static int32_t mndProcessMCreateStbReq(SMnodeMsg *pReq) {
-  SMnode         *pMnode = pReq->pMnode;
-  SMCreateStbReq *pCreate = pReq->rpcMsg.pCont;
+  SMnode        *pMnode = pReq->pMnode;
+  int32_t        code = -1;
+  SStbObj       *pTopicStb = NULL;
+  SStbObj       *pStb = NULL;
+  SDbObj        *pDb = NULL;
+  SMCreateStbReq createReq = {0};
 
-  mDebug("stb:%s, start to create", pCreate->name);
+  if (tDeserializeSMCreateStbReq(pReq->rpcMsg.pCont, &createReq) == NULL) goto CREATE_STB_OVER;
 
-  if (mndCheckCreateStbReq(pCreate) != 0) {
-    mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
-    return -1;
-  }
+  mDebug("stb:%s, start to create", createReq.name);
+  if (mndCheckCreateStbReq(&createReq) != 0) goto CREATE_STB_OVER;
 
-  SStbObj *pStb = mndAcquireStb(pMnode, pCreate->name);
+  pStb = mndAcquireStb(pMnode, createReq.name);
   if (pStb != NULL) {
-    mndReleaseStb(pMnode, pStb);
-    if (pCreate->igExists) {
-      mDebug("stb:%s, already exist, ignore exist is set", pCreate->name);
-      return 0;
+    if (createReq.igExists) {
+      mDebug("stb:%s, already exist, ignore exist is set", createReq.name);
+      code = 0;
+      goto CREATE_STB_OVER;
     } else {
       terrno = TSDB_CODE_MND_STB_ALREADY_EXIST;
-      mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
-      return -1;
+      goto CREATE_STB_OVER;
     }
   } else if (terrno != TSDB_CODE_MND_STB_NOT_EXIST) {
-    mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
-    return -1;
+    goto CREATE_STB_OVER;
   }
 
-  // topic should have different name with stb
-  SStbObj *pTopicStb = mndAcquireStb(pMnode, pCreate->name);
+  pTopicStb = mndAcquireStb(pMnode, createReq.name);
   if (pTopicStb != NULL) {
-    mndReleaseStb(pMnode, pTopicStb);
     terrno = TSDB_CODE_MND_NAME_CONFLICT_WITH_TOPIC;
-    mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
-    return -1;
+    goto CREATE_STB_OVER;
   }
 
-  SDbObj *pDb = mndAcquireDbByStb(pMnode, pCreate->name);
+  pDb = mndAcquireDbByStb(pMnode, createReq.name);
   if (pDb == NULL) {
     terrno = TSDB_CODE_MND_DB_NOT_SELECTED;
-    mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
-    return -1;
+    goto CREATE_STB_OVER;
   }
 
-  int32_t code = mndCreateStb(pMnode, pReq, pCreate, pDb);
-  mndReleaseDb(pMnode, pDb);
+  code = mndCreateStb(pMnode, pReq, &createReq, pDb);
 
+CREATE_STB_OVER:
   if (code != 0) {
-    mError("stb:%s, failed to create since %s", pCreate->name, terrstr());
-    return -1;
+    mError("stb:%s, failed to create since %s", createReq.name, terrstr());
+  } else {
+    code = TSDB_CODE_MND_ACTION_IN_PROGRESS;
   }
 
-  return TSDB_CODE_MND_ACTION_IN_PROGRESS;
+  mndReleaseStb(pMnode, pStb);
+  mndReleaseStb(pMnode, pTopicStb);
+  mndReleaseDb(pMnode, pDb);
+  taosArrayClear(createReq.pColumns);
+  taosArrayClear(createReq.pTags);
+
+  return code;
 }
 
 static int32_t mndProcessVCreateStbRsp(SMnodeMsg *pRsp) {
@@ -891,7 +914,7 @@ static int32_t mndSetAlterStbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj
     if (pIter == NULL) break;
     if (pVgroup->dbUid != pDb->uid) continue;
 
-    void *pReq = mndBuildCreateStbReq(pMnode, pVgroup, pStb, &contLen);
+    void *pReq = mndBuildVCreateStbReq(pMnode, pVgroup, pStb, &contLen);
     if (pReq == NULL) {
       sdbCancelFetch(pSdb, pIter);
       sdbRelease(pSdb, pVgroup);
@@ -1049,7 +1072,7 @@ static int32_t mndSetDropStbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *
     if (pVgroup->dbUid != pDb->uid) continue;
 
     int32_t contLen = 0;
-    void   *pReq = mndBuildDropStbReq(pMnode, pVgroup, pStb, &contLen);
+    void   *pReq = mndBuildVDropStbReq(pMnode, pVgroup, pStb, &contLen);
     if (pReq == NULL) {
       sdbCancelFetch(pSdb, pIter);
       sdbRelease(pSdb, pVgroup);
@@ -1095,28 +1118,30 @@ DROP_STB_OVER:
 }
 
 static int32_t mndProcessMDropStbReq(SMnodeMsg *pReq) {
-  SMnode       *pMnode = pReq->pMnode;
-  SMDropStbReq *pDrop = pReq->rpcMsg.pCont;
+  SMnode *pMnode = pReq->pMnode;
+
+  SMDropStbReq dropReq = {0};
+  tDeserializeSMDropStbReq(pReq->rpcMsg.pCont, &dropReq);
 
-  mDebug("stb:%s, start to drop", pDrop->name);
+  mDebug("stb:%s, start to drop", dropReq.name);
 
-  SStbObj *pStb = mndAcquireStb(pMnode, pDrop->name);
+  SStbObj *pStb = mndAcquireStb(pMnode, dropReq.name);
   if (pStb == NULL) {
-    if (pDrop->igNotExists) {
-      mDebug("stb:%s, not exist, ignore not exist is set", pDrop->name);
+    if (dropReq.igNotExists) {
+      mDebug("stb:%s, not exist, ignore not exist is set", dropReq.name);
       return 0;
     } else {
       terrno = TSDB_CODE_MND_STB_NOT_EXIST;
-      mError("stb:%s, failed to drop since %s", pDrop->name, terrstr());
+      mError("stb:%s, failed to drop since %s", dropReq.name, terrstr());
       return -1;
     }
   }
 
-  SDbObj *pDb = mndAcquireDbByStb(pMnode, pDrop->name);
+  SDbObj *pDb = mndAcquireDbByStb(pMnode, dropReq.name);
   if (pDb == NULL) {
     mndReleaseStb(pMnode, pStb);
     terrno = TSDB_CODE_MND_DB_NOT_SELECTED;
-    mError("stb:%s, failed to drop since %s", pDrop->name, terrstr());
+    mError("stb:%s, failed to drop since %s", dropReq.name, terrstr());
     return -1;
   }
 
@@ -1125,7 +1150,7 @@ static int32_t mndProcessMDropStbReq(SMnodeMsg *pReq) {
   mndReleaseStb(pMnode, pStb);
 
   if (code != 0) {
-    mError("stb:%s, failed to drop since %s", pDrop->name, terrstr());
+    mError("stb:%s, failed to drop since %s", dropReq.name, terrstr());
     return -1;
   }
 
diff --git a/source/dnode/mnode/impl/test/stb/stb.cpp b/source/dnode/mnode/impl/test/stb/stb.cpp
index 402795eb039bd8992545f690318ca9aabbf02acb..951964a8e1a1a44b17e2093d90dafa6b8f8fd2a9 100644
--- a/source/dnode/mnode/impl/test/stb/stb.cpp
+++ b/source/dnode/mnode/impl/test/stb/stb.cpp
@@ -22,19 +22,19 @@ class MndTestStb : public ::testing::Test {
   void SetUp() override {}
   void TearDown() override {}
 
-  SCreateDbReq*   BuildCreateDbReq(const char* dbname, int32_t* pContLen);
-  SDropDbReq*     BuildDropDbReq(const char* dbname, int32_t* pContLen);
-  SMCreateStbReq* BuildCreateStbReq(const char* stbname, int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbAddTagReq(const char* stbname, const char* tagname, int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbDropTagReq(const char* stbname, const char* tagname, int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbUpdateTagNameReq(const char* stbname, const char* tagname, const char* newtagname,
-                                                int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbUpdateTagBytesReq(const char* stbname, const char* tagname, int32_t bytes,
-                                                 int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbAddColumnReq(const char* stbname, const char* colname, int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbDropColumnReq(const char* stbname, const char* colname, int32_t* pContLen);
-  SMAltertbReq*   BuildAlterStbUpdateColumnBytesReq(const char* stbname, const char* colname, int32_t bytes,
-                                                    int32_t* pContLen);
+  SCreateDbReq* BuildCreateDbReq(const char* dbname, int32_t* pContLen);
+  SDropDbReq*   BuildDropDbReq(const char* dbname, int32_t* pContLen);
+  void*         BuildCreateStbReq(const char* stbname, int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbAddTagReq(const char* stbname, const char* tagname, int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbDropTagReq(const char* stbname, const char* tagname, int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbUpdateTagNameReq(const char* stbname, const char* tagname, const char* newtagname,
+                                              int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbUpdateTagBytesReq(const char* stbname, const char* tagname, int32_t bytes,
+                                               int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbAddColumnReq(const char* stbname, const char* colname, int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbDropColumnReq(const char* stbname, const char* colname, int32_t* pContLen);
+  SMAltertbReq* BuildAlterStbUpdateColumnBytesReq(const char* stbname, const char* colname, int32_t bytes,
+                                                  int32_t* pContLen);
 };
 
 Testbase MndTestStb::test;
@@ -78,53 +78,62 @@ SDropDbReq* MndTestStb::BuildDropDbReq(const char* dbname, int32_t* pContLen) {
   return pReq;
 }
 
-SMCreateStbReq* MndTestStb::BuildCreateStbReq(const char* stbname, int32_t* pContLen) {
-  int32_t cols = 2;
-  int32_t tags = 3;
-  int32_t contLen = (tags + cols) * sizeof(SSchema) + sizeof(SMCreateStbReq);
-
-  SMCreateStbReq* pReq = (SMCreateStbReq*)rpcMallocCont(contLen);
-  strcpy(pReq->name, stbname);
-  pReq->numOfTags = htonl(tags);
-  pReq->numOfColumns = htonl(cols);
+void* MndTestStb::BuildCreateStbReq(const char* stbname, int32_t* pContLen) {
+  SMCreateStbReq createReq = {0};
+  createReq.numOfColumns = 2;
+  createReq.numOfTags = 3;
+  createReq.igExists = 0;
+  createReq.pColumns = taosArrayInit(createReq.numOfColumns, sizeof(SField));
+  createReq.pTags = taosArrayInit(createReq.numOfTags, sizeof(SField));
+  strcpy(createReq.name, stbname);
 
   {
-    SSchema* pSchema = &pReq->pSchemas[0];
-    pSchema->bytes = htonl(8);
-    pSchema->type = TSDB_DATA_TYPE_TIMESTAMP;
-    strcpy(pSchema->name, "ts");
+    SField field = {0};
+    field.bytes = 8;
+    field.type = TSDB_DATA_TYPE_TIMESTAMP;
+    strcpy(field.name, "ts");
+    taosArrayPush(createReq.pColumns, &field);
   }
 
   {
-    SSchema* pSchema = &pReq->pSchemas[1];
-    pSchema->bytes = htonl(12);
-    pSchema->type = TSDB_DATA_TYPE_BINARY;
-    strcpy(pSchema->name, "col1");
+    SField field = {0};
+    field.bytes = 12;
+    field.type = TSDB_DATA_TYPE_BINARY;
+    strcpy(field.name, "col1");
+    taosArrayPush(createReq.pColumns, &field);
   }
 
   {
-    SSchema* pSchema = &pReq->pSchemas[2];
-    pSchema->bytes = htonl(2);
-    pSchema->type = TSDB_DATA_TYPE_TINYINT;
-    strcpy(pSchema->name, "tag1");
+    SField field = {0};
+    field.bytes = 2;
+    field.type = TSDB_DATA_TYPE_TINYINT;
+    strcpy(field.name, "tag1");
+    taosArrayPush(createReq.pTags, &field);
   }
 
   {
-    SSchema* pSchema = &pReq->pSchemas[3];
-    pSchema->bytes = htonl(8);
-    pSchema->type = TSDB_DATA_TYPE_BIGINT;
-    strcpy(pSchema->name, "tag2");
+    SField field = {0};
+    field.bytes = 8;
+    field.type = TSDB_DATA_TYPE_BIGINT;
+    strcpy(field.name, "tag2");
+    taosArrayPush(createReq.pTags, &field);
   }
 
   {
-    SSchema* pSchema = &pReq->pSchemas[4];
-    pSchema->bytes = htonl(16);
-    pSchema->type = TSDB_DATA_TYPE_BINARY;
-    strcpy(pSchema->name, "tag3");
+    SField field = {0};
+    field.bytes = 16;
+    field.type = TSDB_DATA_TYPE_BINARY;
+    strcpy(field.name, "tag3");
+    taosArrayPush(createReq.pTags, &field);
   }
 
-  *pContLen = contLen;
-  return pReq;
+  int32_t tlen = tSerializeSMCreateStbReq(NULL, &createReq);
+  void*   pHead = rpcMallocCont(tlen);
+
+  void* pBuf = pHead;
+  tSerializeSMCreateStbReq(&pBuf, &createReq);
+  *pContLen = tlen;
+  return pHead;
 }
 
 SMAltertbReq* MndTestStb::BuildAlterStbAddTagReq(const char* stbname, const char* tagname, int32_t* pContLen) {
@@ -260,9 +269,9 @@ TEST_F(MndTestStb, 01_Create_Show_Meta_Drop_Restart_Stb) {
   }
 
   {
-    int32_t         contLen = 0;
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    int32_t  contLen = 0;
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_NE(pRsp, nullptr);
     ASSERT_EQ(pRsp->code, 0);
   }
@@ -379,12 +388,15 @@ TEST_F(MndTestStb, 01_Create_Show_Meta_Drop_Restart_Stb) {
   }
 
   {
-    int32_t contLen = sizeof(SMDropStbReq);
+    SMDropStbReq dropReq = {0};
+    strcpy(dropReq.name, stbname);
 
-    SMDropStbReq* pReq = (SMDropStbReq*)rpcMallocCont(contLen);
-    strcpy(pReq->name, stbname);
+    int32_t contLen = tSerializeSMDropStbReq(NULL, &dropReq);
+    void*   pHead = rpcMallocCont(contLen);
+    void*   pBuf = pHead;
+    tSerializeSMDropStbReq(&pBuf, &dropReq);
 
-    SRpcMsg* pRsp = test.SendReq(TDMT_MND_DROP_STB, pReq, contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_DROP_STB, pHead, contLen);
     ASSERT_NE(pRsp, nullptr);
     ASSERT_EQ(pRsp->code, 0);
   }
@@ -418,8 +430,8 @@ TEST_F(MndTestStb, 02_Alter_Stb_AddTag) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_NE(pRsp, nullptr);
     ASSERT_EQ(pRsp->code, 0);
   }
@@ -483,8 +495,8 @@ TEST_F(MndTestStb, 03_Alter_Stb_DropTag) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_EQ(pRsp->code, 0);
   }
 
@@ -529,8 +541,8 @@ TEST_F(MndTestStb, 04_Alter_Stb_AlterTagName) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_EQ(pRsp->code, 0);
   }
 
@@ -598,8 +610,8 @@ TEST_F(MndTestStb, 05_Alter_Stb_AlterTagBytes) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_EQ(pRsp->code, 0);
   }
 
@@ -656,8 +668,8 @@ TEST_F(MndTestStb, 06_Alter_Stb_AddColumn) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_NE(pRsp, nullptr);
     ASSERT_EQ(pRsp->code, 0);
   }
@@ -721,8 +733,8 @@ TEST_F(MndTestStb, 07_Alter_Stb_DropColumn) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_EQ(pRsp->code, 0);
   }
 
@@ -786,8 +798,8 @@ TEST_F(MndTestStb, 08_Alter_Stb_AlterTagBytes) {
   }
 
   {
-    SMCreateStbReq* pReq = BuildCreateStbReq(stbname, &contLen);
-    SRpcMsg*        pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
+    void*    pReq = BuildCreateStbReq(stbname, &contLen);
+    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_STB, pReq, contLen);
     ASSERT_EQ(pRsp->code, 0);
   }
 
diff --git a/source/libs/parser/inc/astToMsg.h b/source/libs/parser/inc/astToMsg.h
index 8f2c2ad4b34399da900e2f3960459eb0e1e94b58..82648e0bfa56d6c40705d30eb05d9f578133ffe3 100644
--- a/source/libs/parser/inc/astToMsg.h
+++ b/source/libs/parser/inc/astToMsg.h
@@ -10,8 +10,8 @@ SCreateAcctReq* buildAcctManipulationMsg(SSqlInfo* pInfo, int32_t* outputLen, in
 SDropUserReq* buildDropUserMsg(SSqlInfo* pInfo, int32_t* outputLen, int64_t id, char* msgBuf, int32_t msgLen);
 SShowReq* buildShowMsg(SShowInfo* pShowInfo, SParseContext* pParseCtx, SMsgBuf* pMsgBuf);
 SCreateDbReq* buildCreateDbMsg(SCreateDbInfo* pCreateDbInfo, SParseContext *pCtx, SMsgBuf* pMsgBuf);
-SMCreateStbReq*   buildCreateStbMsg(SCreateTableSql* pCreateTableSql, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf);
-SMDropStbReq* buildDropStableMsg(SSqlInfo* pInfo, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf);
+char* buildCreateStbReq(SCreateTableSql* pCreateTableSql, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf);
+char* buildDropStableReq(SSqlInfo* pInfo, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf);
 SCreateDnodeReq *buildCreateDnodeMsg(SSqlInfo* pInfo, int32_t* len, SMsgBuf* pMsgBuf);
 SDropDnodeReq *buildDropDnodeMsg(SSqlInfo* pInfo, int32_t* len, SMsgBuf* pMsgBuf);
 
diff --git a/source/libs/parser/src/astToMsg.c b/source/libs/parser/src/astToMsg.c
index c7a1fd26a05741c7a4195703df11ab911cc2e02e..e1828b6a26d44b5aef648723b1aeab605ff94d5d 100644
--- a/source/libs/parser/src/astToMsg.c
+++ b/source/libs/parser/src/astToMsg.c
@@ -249,112 +249,64 @@ SCreateDbReq* buildCreateDbMsg(SCreateDbInfo* pCreateDbInfo, SParseContext *pCtx
   return pCreateMsg;
 }
 
-SMCreateStbReq* buildCreateStbMsg(SCreateTableSql* pCreateTableSql, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf) {
-  SSchema* pSchema;
-
-  int32_t numOfTags = 0;
-  int32_t numOfCols = (int32_t) taosArrayGetSize(pCreateTableSql->colInfo.pColumns);
-  if (pCreateTableSql->colInfo.pTagColumns != NULL) {
-    numOfTags = (int32_t) taosArrayGetSize(pCreateTableSql->colInfo.pTagColumns);
+char* buildCreateStbReq(SCreateTableSql* pCreateTableSql, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf) {
+  SMCreateStbReq createReq = {0};
+  createReq.igExists = pCreateTableSql->existCheck ? 1 : 0;
+  createReq.pColumns = pCreateTableSql->colInfo.pColumns;
+  createReq.pTags = pCreateTableSql->colInfo.pTagColumns;
+  createReq.numOfColumns = (int32_t)taosArrayGetSize(pCreateTableSql->colInfo.pColumns);
+  createReq.numOfTags = (int32_t)taosArrayGetSize(pCreateTableSql->colInfo.pTagColumns);
+
+  SName n = {0};
+  if (createSName(&n, &pCreateTableSql->name, pParseCtx, pMsgBuf) != 0) {
+    return NULL;
   }
 
-  SMCreateStbReq* pCreateStbMsg = (SMCreateStbReq*)calloc(1, sizeof(SMCreateStbReq) + (numOfCols + numOfTags) * sizeof(SSchema));
-  if (pCreateStbMsg == NULL) {
+  if (tNameExtractFullName(&n, createReq.name) != 0) {
+    buildInvalidOperationMsg(pMsgBuf, "invalid table name or database not specified");
     return NULL;
   }
 
-  char* pMsg = NULL;
-#if 0
-  int32_t tableType = pCreateTableSql->type;
-  if (tableType != TSQL_CREATE_TABLE && tableType != TSQL_CREATE_STABLE) {  // create by using super table, tags value
-    SArray* list = pInfo->pCreateTableInfo->childTableInfo;
-
-    int32_t numOfTables = (int32_t)taosArrayGetSize(list);
-    pCreateStbMsg->numOfTables = htonl(numOfTables);
-
-    pMsg = (char*)pCreateMsg;
-    for (int32_t i = 0; i < numOfTables; ++i) {
-      SCreateTableMsg* pCreate = (SCreateTableMsg*)pMsg;
-
-      pCreate->numOfColumns = htons(pCmd->numOfCols);
-      pCreate->numOfTags = htons(pCmd->count);
-      pMsg += sizeof(SCreateTableMsg);
-
-      SCreatedTableInfo* p = taosArrayGet(list, i);
-      strcpy(pCreate->tableName, p->fullname);
-      pCreate->igExists = (p->igExist) ? 1 : 0;
-
-      // use dbinfo from table id without modifying current db info
-      pMsg = serializeTagData(&p->tagdata, pMsg);
-
-      int32_t len = (int32_t)(pMsg - (char*)pCreate);
-      pCreate->len = htonl(len);
-    }
-
-  } else {
-#endif
-    // create (super) table
-    SName n = {0};
-    int32_t code = createSName(&n, &pCreateTableSql->name, pParseCtx, pMsgBuf);
-    if (code != 0) {
-      return NULL;
-    }
-
-    code = tNameExtractFullName(&n, pCreateStbMsg->name);
-    if (code != 0) {
-      buildInvalidOperationMsg(pMsgBuf, "invalid table name or database not specified");
-      return NULL;
-    }
-
-    pCreateStbMsg->igExists     = pCreateTableSql->existCheck ? 1 : 0;
-    pCreateStbMsg->numOfColumns = htonl(numOfCols);
-    pCreateStbMsg->numOfTags    = htonl(numOfTags);
-
-    pSchema = (SSchema*)pCreateStbMsg->pSchemas;
-    for (int i = 0; i < numOfCols; ++i) {
-      SField* pField = taosArrayGet(pCreateTableSql->colInfo.pColumns, i);
-      pSchema->type  = pField->type;
-      pSchema->bytes = htonl(pField->bytes);
-      strcpy(pSchema->name, pField->name);
-
-      pSchema++;
-    }
-
-    for(int32_t i = 0; i < numOfTags; ++i) {
-      SField* pField = taosArrayGet(pCreateTableSql->colInfo.pTagColumns, i);
-      pSchema->type  = pField->type;
-      pSchema->bytes = htonl(pField->bytes);
-      strcpy(pSchema->name, pField->name);
-
-      pSchema++;
-    }
-
-    pMsg = (char*)pSchema;
-
-  int32_t msgLen = (int32_t)(pMsg - (char*)pCreateStbMsg);
-  *len = msgLen;
+  int32_t tlen = tSerializeSMCreateStbReq(NULL, &createReq);
+  void*   req = malloc(tlen);
+  if (req == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return NULL;
+  }
 
-  return pCreateStbMsg;
+  void* buf = req;
+  tSerializeSMCreateStbReq(&buf, &createReq);
+  *len = tlen;
+  return req;
 }
 
-SMDropStbReq* buildDropStableMsg(SSqlInfo* pInfo, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf) {
+char* buildDropStableReq(SSqlInfo* pInfo, int32_t* len, SParseContext* pParseCtx, SMsgBuf* pMsgBuf) {
   SToken* tableName = taosArrayGet(pInfo->pMiscInfo->a, 0);
 
-  SName name = {0};
+  SName   name = {0};
   int32_t code = createSName(&name, tableName, pParseCtx, pMsgBuf);
   if (code != TSDB_CODE_SUCCESS) {
     terrno = buildInvalidOperationMsg(pMsgBuf, "invalid table name");
     return NULL;
   }
 
-  SMDropStbReq *pDropTableMsg = (SMDropStbReq*) calloc(1, sizeof(SMDropStbReq));
+  SMDropStbReq dropReq = {0};
+  code = tNameExtractFullName(&name, dropReq.name);
 
-  code = tNameExtractFullName(&name, pDropTableMsg->name);
   assert(code == TSDB_CODE_SUCCESS && name.type == TSDB_TABLE_NAME_T);
+  dropReq.igNotExists = pInfo->pMiscInfo->existsCheck ? 1 : 0;
+
+  int32_t tlen = tSerializeSMDropStbReq(NULL, &dropReq);
+  void*   req = malloc(tlen);
+  if (req == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return NULL;
+  }
 
-  pDropTableMsg->igNotExists = pInfo->pMiscInfo->existsCheck ? 1 : 0;
-  *len = sizeof(SMDropStbReq);
-  return pDropTableMsg;
+  void* buf = req;
+  tSerializeSMDropStbReq(&buf, &dropReq);
+  *len = tlen;
+  return req;
 }
 
 SCreateDnodeReq *buildCreateDnodeMsg(SSqlInfo* pInfo, int32_t* len, SMsgBuf* pMsgBuf) {
diff --git a/source/libs/parser/src/dCDAstProcess.c b/source/libs/parser/src/dCDAstProcess.c
index 50ae3bfd262812be8cec8e2d33d467994875a0f1..4b70d2c6c381d777c7475c4f638d60db383482f2 100644
--- a/source/libs/parser/src/dCDAstProcess.c
+++ b/source/libs/parser/src/dCDAstProcess.c
@@ -924,13 +924,13 @@ SDclStmtInfo* qParserValidateDclSqlNode(SSqlInfo* pInfo, SParseContext* pCtx, ch
         goto _error;
       }
 
-      pDcl->pMsg = (char*)buildCreateStbMsg(pCreateTable, &pDcl->msgLen, pCtx, pMsgBuf);
+      pDcl->pMsg = buildCreateStbReq(pCreateTable, &pDcl->msgLen, pCtx, pMsgBuf);
       pDcl->msgType = TDMT_MND_CREATE_STB;
       break;
     }
 
     case TSDB_SQL_DROP_TABLE: {
-      pDcl->pMsg = (char*)buildDropStableMsg(pInfo, &pDcl->msgLen, pCtx, pMsgBuf);
+      pDcl->pMsg = buildDropStableReq(pInfo, &pDcl->msgLen, pCtx, pMsgBuf);
       if (pDcl->pMsg == NULL) {
         goto _error;
       }
diff --git a/source/libs/transport/src/trans.c b/source/libs/transport/src/trans.c
index a6040a3873cc0a4cb65c9407c6bb3ac595dcb3f7..5fc937bccdc5307bcc70bdb5a9dc6ef15a687426 100644
--- a/source/libs/transport/src/trans.c
+++ b/source/libs/transport/src/trans.c
@@ -35,6 +35,7 @@ void* rpcOpen(const SRpcInit* pInit) {
   pRpc->connType = pInit->connType;
   pRpc->idleTime = pInit->idleTime;
   pRpc->tcphandle = (*taosInitHandle[pRpc->connType])(0, pInit->localPort, pRpc->label, pRpc->numOfThreads, NULL, pRpc);
+  pRpc->parent = pInit->parent;
 
   return pRpc;
 }
diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 3d93049c6a7eb96d0527502fda56b85d03ace10c..f5eeae26e68bf462f8aef9d5affb1096cd6bc945 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -124,10 +124,10 @@ static void clientHandleResp(SCliConn* conn) {
   rpcMsg.msgType = pHead->msgType;
   rpcMsg.ahandle = pCtx->ahandle;
   if (pCtx->pSem == NULL) {
-    tDebug("conn %p handle resp", conn);
-    (pRpc->cfp)(NULL, &rpcMsg, NULL);
+    tDebug("client conn %p handle resp, ", conn);
+    (pRpc->cfp)(pRpc->parent, &rpcMsg, NULL);
   } else {
-    tDebug("conn %p handle resp", conn);
+    tDebug("client conn(sync) %p handle resp", conn);
     memcpy((char*)pCtx->pRsp, (char*)&rpcMsg, sizeof(rpcMsg));
     tsem_post(pCtx->pSem);
   }
@@ -154,7 +154,7 @@ static void clientHandleExcept(SCliConn* pConn) {
     clientConnDestroy(pConn, true);
     return;
   }
-  tDebug("conn %p start to destroy", pConn);
+  tDebug("client conn %p start to destroy", pConn);
   SCliMsg* pMsg = pConn->data;
 
   destroyUserdata(&pMsg->msg);
@@ -166,7 +166,7 @@ static void clientHandleExcept(SCliConn* pConn) {
   rpcMsg.code = TSDB_CODE_RPC_NETWORK_UNAVAIL;
   if (pCtx->pSem == NULL) {
     // SRpcInfo* pRpc = pMsg->ctx->pRpc;
-    (pCtx->pTransInst->cfp)(NULL, &rpcMsg, NULL);
+    (pCtx->pTransInst->cfp)(pCtx->pTransInst->parent, &rpcMsg, NULL);
   } else {
     memcpy((char*)(pCtx->pRsp), (char*)(&rpcMsg), sizeof(rpcMsg));
     // SRpcMsg rpcMsg
@@ -184,7 +184,7 @@ static void clientTimeoutCb(uv_timer_t* handle) {
   SCliThrdObj* pThrd = handle->data;
   SRpcInfo*    pRpc = pThrd->pTransInst;
   int64_t      currentTime = pThrd->nextTimeout;
-  tDebug("timeout, try to remove expire conn from conn pool");
+  tDebug("client conn timeout, try to remove expire conn from conn pool");
 
   SConnList* p = taosHashIterate((SHashObj*)pThrd->pool, NULL);
   while (p != NULL) {
@@ -253,7 +253,7 @@ static void addConnToPool(void* pool, char* ip, uint32_t port, SCliConn* conn) {
 
   tstrncpy(key, ip, strlen(ip));
   tstrncpy(key + strlen(key), (char*)(&port), sizeof(port));
-  tDebug("conn %p added to conn pool, read buf cap: %d", conn, conn->readBuf.cap);
+  tDebug("client conn %p added to conn pool, read buf cap: %d", conn, conn->readBuf.cap);
 
   SRpcInfo* pRpc = ((SCliThrdObj*)conn->hostThrd)->pTransInst;
 
@@ -294,10 +294,10 @@ static void clientReadCb(uv_stream_t* handle, ssize_t nread, const uv_buf_t* buf
     pBuf->len += nread;
     if (clientReadComplete(pBuf)) {
       uv_read_stop((uv_stream_t*)conn->stream);
-      tDebug("conn %p read complete", conn);
+      tDebug("client conn %p read complete", conn);
       clientHandleResp(conn);
     } else {
-      tDebug("conn %p read partial packet, continue to read", conn);
+      tDebug("client conn %p read partial packet, continue to read", conn);
     }
     return;
   }
@@ -309,7 +309,7 @@ static void clientReadCb(uv_stream_t* handle, ssize_t nread, const uv_buf_t* buf
     return;
   }
   if (nread < 0 || nread == UV_EOF) {
-    tError("conn %p read error: %s", conn, uv_err_name(nread));
+    tError("client conn %p read error: %s", conn, uv_err_name(nread));
     clientHandleExcept(conn);
   }
   // tDebug("Read error %s\n", uv_err_name(nread));
@@ -320,9 +320,9 @@ static void clientConnDestroy(SCliConn* conn, bool clear) {
   //
   conn->ref--;
   if (conn->ref == 0) {
-    tDebug("conn %p remove from conn pool", conn);
+    tDebug("client conn %p remove from conn pool", conn);
     QUEUE_REMOVE(&conn->conn);
-    tDebug("conn %p remove from conn pool successfully", conn);
+    tDebug("client conn %p remove from conn pool successfully", conn);
     if (clear) {
       uv_close((uv_handle_t*)conn->stream, clientDestroy);
     }
@@ -334,7 +334,7 @@ static void clientDestroy(uv_handle_t* handle) {
 
   free(conn->stream);
   free(conn->writeReq);
-  tDebug("conn %p destroy successfully", conn);
+  tDebug("client conn %p destroy successfully", conn);
   free(conn);
 
   // clientConnDestroy(conn, false);
@@ -343,7 +343,7 @@ static void clientDestroy(uv_handle_t* handle) {
 static void clientWriteCb(uv_write_t* req, int status) {
   SCliConn* pConn = req->data;
   if (status == 0) {
-    tDebug("conn %p data already was written out", pConn);
+    tDebug("client conn %p data already was written out", pConn);
     SCliMsg* pMsg = pConn->data;
     if (pMsg == NULL) {
       // handle
@@ -351,7 +351,7 @@ static void clientWriteCb(uv_write_t* req, int status) {
     }
     destroyUserdata(&pMsg->msg);
   } else {
-    tError("conn %p failed to write: %s", pConn, uv_err_name(status));
+    tError("client conn %p failed to write: %s", pConn, uv_err_name(status));
     clientHandleExcept(pConn);
     return;
   }
@@ -370,7 +370,7 @@ static void clientWrite(SCliConn* pConn) {
   pHead->msgLen = (int32_t)htonl((uint32_t)msgLen);
 
   uv_buf_t wb = uv_buf_init((char*)pHead, msgLen);
-  tDebug("conn %p data write out, msgType : %d, len: %d", pConn, pHead->msgType, msgLen);
+  tDebug("client conn %p data write out, msgType : %s, len: %d", pConn, TMSG_INFO(pHead->msgType), msgLen);
   uv_write(pConn->writeReq, (uv_stream_t*)pConn->stream, &wb, 1, clientWriteCb);
 }
 static void clientConnCb(uv_connect_t* req, int status) {
@@ -378,11 +378,11 @@ static void clientConnCb(uv_connect_t* req, int status) {
   SCliConn* pConn = req->data;
   if (status != 0) {
     // tError("failed to connect server(%s, %d), errmsg: %s", pCtx->ip, pCtx->port, uv_strerror(status));
-    tError("conn %p failed to connect server: %s", pConn, uv_strerror(status));
+    tError("client conn %p failed to connect server: %s", pConn, uv_strerror(status));
     clientHandleExcept(pConn);
     return;
   }
-  tDebug("conn %p create", pConn);
+  tDebug("client conn %p create", pConn);
 
   assert(pConn->stream == req->handle);
   clientWrite(pConn);
@@ -400,14 +400,14 @@ static void clientHandleQuit(SCliMsg* pMsg, SCliThrdObj* pThrd) {
 static void clientHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   uint64_t et = taosGetTimestampUs();
   uint64_t el = et - pMsg->st;
-  tDebug("msg tran time cost: %" PRIu64 "", el);
+  tDebug("client msg tran time cost: %" PRIu64 "", el);
   et = taosGetTimestampUs();
 
   STransConnCtx* pCtx = pMsg->ctx;
   SCliConn*      conn = getConnFromPool(pThrd->pool, pCtx->ip, pCtx->port);
   if (conn != NULL) {
     // impl later
-    tDebug("conn %p get from conn pool", conn);
+    tDebug("client get conn %p from pool", conn);
     conn->data = pMsg;
     conn->writeReq->data = conn;
     transDestroyBuffer(&conn->readBuf);
diff --git a/source/libs/transport/src/transSrv.c b/source/libs/transport/src/transSrv.c
index 4d2ac434dde79a1749770e79fa3f20533090ab9b..f3cfd254089d33460287194be7d5c2f56d620711 100644
--- a/source/libs/transport/src/transSrv.c
+++ b/source/libs/transport/src/transSrv.c
@@ -266,6 +266,7 @@ static void uvHandleReq(SSrvConn* pConn) {
 
   transClearBuffer(&pConn->readBuf);
   pConn->ref++;
+  tDebug("%s received on %p", TMSG_INFO(rpcMsg.msgType), pConn);
   (*(pRpc->cfp))(pRpc->parent, &rpcMsg, NULL);
   // uv_timer_start(pConn->pTimer, uvHandleActivityTimeout, pRpc->idleTime * 10000, 0);
   // auth
@@ -278,7 +279,7 @@ void uvOnReadCb(uv_stream_t* cli, ssize_t nread, const uv_buf_t* buf) {
   SConnBuffer* pBuf = &conn->readBuf;
   if (nread > 0) {
     pBuf->len += nread;
-    tDebug("conn %p read summroy, total read: %d, current read: %d", conn, pBuf->len, (int)nread);
+    tDebug("conn %p read summary, total read: %d, current read: %d", conn, pBuf->len, (int)nread);
     if (readComplete(pBuf)) {
       tDebug("conn %p alread read complete packet", conn);
       uvHandleReq(conn);
@@ -717,6 +718,9 @@ void taosCloseServer(void* arg) {
 }
 
 void rpcSendResponse(const SRpcMsg* pMsg) {
+  if (pMsg->handle == NULL) {
+    return;
+  }
   SSrvConn*     pConn = pMsg->handle;
   SWorkThrdObj* pThrd = pConn->hostThrd;
 
diff --git a/source/util/src/tarray.c b/source/util/src/tarray.c
index 09aeff5ff3f749ab7292700ccd42f9be7c6e4dc8..3e6f97c0c3bcdc30d39f08dd469babd3199a1fa9 100644
--- a/source/util/src/tarray.c
+++ b/source/util/src/tarray.c
@@ -204,7 +204,12 @@ void* taosArrayGetLast(const SArray* pArray) {
   return TARRAY_GET_ELEM(pArray, pArray->size - 1);
 }
 
-size_t taosArrayGetSize(const SArray* pArray) { return pArray->size; }
+size_t taosArrayGetSize(const SArray* pArray) {
+  if (pArray == NULL) {
+    return 0;
+  }
+  return pArray->size;
+}
 
 void taosArraySetSize(SArray* pArray, size_t size) {
   assert(size <= pArray->capacity);
@@ -296,7 +301,7 @@ SArray* taosArrayDup(const SArray* pSrc) {
 }
 
 void taosArrayClear(SArray* pArray) {
-  assert( pArray != NULL );
+  if (pArray == NULL) return;
   pArray->size = 0;
 }