diff --git a/source/dnode/mgmt/vm/vmWorker.c b/source/dnode/mgmt/vm/vmWorker.c
index ff92cf880b..2fb29ce944 100644
--- a/source/dnode/mgmt/vm/vmWorker.c
+++ b/source/dnode/mgmt/vm/vmWorker.c
@@ -115,7 +115,7 @@ static void vmProcessWriteQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numO
     }
   }
 
-  vnodeProcessWMsgs(pVnode->pImpl, pArray);
+  vnodePreprocessWriteReqs(pVnode->pImpl, pArray);
 
   numOfMsgs = taosArrayGetSize(pArray);
   for (int32_t i = 0; i < numOfMsgs; i++) {
@@ -123,7 +123,7 @@ static void vmProcessWriteQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numO
     SRpcMsg  *pRpc = &pMsg->rpcMsg;
     SRpcMsg  *pRsp = NULL;
 
-    int32_t code = vnodeApplyWMsg(pVnode->pImpl, pRpc, &pRsp);
+    int32_t code = vnodeProcessWriteReq(pVnode->pImpl, pRpc, &pRsp);
     if (pRsp != NULL) {
       pRsp->ahandle = pRpc->ahandle;
       tmsgSendRsp(pRsp);
@@ -153,7 +153,7 @@ static void vmProcessApplyQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numO
 
     // todo
     SRpcMsg *pRsp = NULL;
-    (void)vnodeApplyWMsg(pVnode->pImpl, &pMsg->rpcMsg, &pRsp);
+    (void)vnodeProcessWriteReq(pVnode->pImpl, &pMsg->rpcMsg, &pRsp);
   }
 }
 
diff --git a/source/dnode/vnode/CMakeLists.txt b/source/dnode/vnode/CMakeLists.txt
index 068b8aabe9..3ab007e3a2 100644
--- a/source/dnode/vnode/CMakeLists.txt
+++ b/source/dnode/vnode/CMakeLists.txt
@@ -26,7 +26,6 @@ target_sources(
     "src/meta/metaTDBImpl.c"
 
     # tsdb
-    # "src/tsdb/tsdbBDBImpl.c"
     "src/tsdb/tsdbTDBImpl.c"
     "src/tsdb/tsdbCommit.c"
     "src/tsdb/tsdbCompact.c"
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 7ed0092d36..76fc09ca1d 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -47,8 +47,8 @@ void    vnodeCleanup();
 SVnode *vnodeOpen(const char *path, const SVnodeCfg *pVnodeCfg);
 void    vnodeClose(SVnode *pVnode);
 void    vnodeDestroy(const char *path);
-void    vnodeProcessWMsgs(SVnode *pVnode, SArray *pMsgs);
-int     vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
+void    vnodePreprocessWriteReqs(SVnode *pVnode, SArray *pMsgs);
+int     vnodeProcessWriteReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
 int     vnodeProcessCMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
 int     vnodeProcessSyncReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp);
 int     vnodeProcessQueryMsg(SVnode *pVnode, SRpcMsg *pMsg);
diff --git a/source/dnode/vnode/src/tsdb/tsdbBDBImpl.c b/source/dnode/vnode/src/tsdb/tsdbBDBImpl.c
deleted file mode 100644
index acd9c2dcaa..0000000000
--- a/source/dnode/vnode/src/tsdb/tsdbBDBImpl.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#define ALLOW_FORBID_FUNC
-#include "db.h"
-
-#include "vnodeInt.h"
-
-#define IMPL_WITH_LOCK 1
-
-static int  tsdbOpenBDBDb(DB **ppDB, DB_ENV *pEnv, const char *pFName, bool isDup);
-static void tsdbCloseBDBDb(DB *pDB);
-
-#define BDB_PERR(info, code) fprintf(stderr, "%s:%d " info " reason: %s\n", __FILE__, __LINE__, db_strerror(code))
-
-int32_t tsdbOpenDBF(TDBEnv pEnv, SDBFile *pDBF) {
-  // TDBEnv is shared by a group of SDBFile
-  if (!pEnv) {
-    terrno = TSDB_CODE_INVALID_PTR;
-    return -1;
-  }
-
-  // Open DBF
-  if (tsdbOpenBDBDb(&(pDBF->pDB), pEnv, pDBF->path, false) < 0) {
-    terrno = TSDB_CODE_TDB_INIT_FAILED;
-    tsdbCloseBDBDb(pDBF->pDB);
-    return -1;
-  }
-
-  return 0;
-}
-
-void tsdbCloseDBF(SDBFile *pDBF) {
-  if (pDBF->pDB) {
-    tsdbCloseBDBDb(pDBF->pDB);
-    pDBF->pDB = NULL;
-  }
-  taosMemoryFreeClear(pDBF->path);
-}
-
-int32_t tsdbOpenBDBEnv(DB_ENV **ppEnv, const char *path) {
-  int     ret = 0;
-  DB_ENV *pEnv = NULL;
-
-  if (path == NULL) return 0;
-
-  ret = db_env_create(&pEnv, 0);
-  if (ret != 0) {
-    BDB_PERR("Failed to create tsdb env", ret);
-    return -1;
-  }
-
-  ret = pEnv->open(pEnv, path, DB_CREATE | DB_INIT_CDB | DB_INIT_MPOOL, 0);
-  if (ret != 0) {
-    terrno = TSDB_CODE_TDB_TDB_ENV_OPEN_ERROR;
-    tsdbWarn("Failed to open tsdb env for path %s since ret %d != 0", path ? path : "NULL", ret);
-    return -1;
-  }
-
-  *ppEnv = pEnv;
-
-  return 0;
-}
-
-void tsdbCloseBDBEnv(DB_ENV *pEnv) {
-  if (pEnv) {
-    pEnv->close(pEnv, 0);
-  }
-}
-
-static int tsdbOpenBDBDb(DB **ppDB, DB_ENV *pEnv, const char *pFName, bool isDup) {
-  int ret;
-  DB *pDB;
-
-  ret = db_create(&(pDB), pEnv, 0);
-  if (ret != 0) {
-    BDB_PERR("Failed to create DBP", ret);
-    return -1;
-  }
-
-  if (isDup) {
-    ret = pDB->set_flags(pDB, DB_DUPSORT);
-    if (ret != 0) {
-      BDB_PERR("Failed to set DB flags", ret);
-      return -1;
-    }
-  }
-
-  ret = pDB->open(pDB, NULL, pFName, NULL, DB_BTREE, DB_CREATE, 0);
-  if (ret) {
-    BDB_PERR("Failed to open DBF", ret);
-    return -1;
-  }
-
-  *ppDB = pDB;
-
-  return 0;
-}
-
-static void tsdbCloseBDBDb(DB *pDB) {
-  if (pDB) {
-    pDB->close(pDB, 0);
-  }
-}
-
-int32_t tsdbSaveSmaToDB(SDBFile *pDBF, void *key, uint32_t keySize, void *data, uint32_t dataSize) {
-  int ret;
-  DBT key1 = {0}, value1 = {0};
-
-  key1.data = key;
-  key1.size = keySize;
-
-  value1.data = data;
-  value1.size = dataSize;
-
-  // TODO: lock
-  ret = pDBF->pDB->put(pDBF->pDB, NULL, &key1, &value1, 0);
-  if (ret) {
-    BDB_PERR("Failed to put data to DBF", ret);
-    // TODO: unlock
-    return -1;
-  }
-  // TODO: unlock
-
-  return 0;
-}
-
-void *tsdbGetSmaDataByKey(SDBFile *pDBF, void *key, uint32_t keySize, uint32_t *valueSize) {
-  void *result = NULL;
-  DBT   key1 = {0};
-  DBT   value1 = {0};
-  int   ret;
-
-  // Set key/value
-  key1.data = key;
-  key1.size = keySize;
-
-  // Query
-  // TODO: lock
-  ret = pDBF->pDB->get(pDBF->pDB, NULL, &key1, &value1, 0);
-  // TODO: unlock
-  if (ret != 0) {
-    return NULL;
-  }
-
-  result = taosMemoryCalloc(1, value1.size);
-
-  if (result == NULL) {
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    return NULL;
-  }
-
-  *valueSize = value1.size;
-  memcpy(result, value1.data, value1.size);
-
-  return result;
-}
\ No newline at end of file
diff --git a/source/dnode/vnode/src/vnd/vnodeSvr.c b/source/dnode/vnode/src/vnd/vnodeSvr.c
index 63fe6b6f5b..bcd8d956fd 100644
--- a/source/dnode/vnode/src/vnd/vnodeSvr.c
+++ b/source/dnode/vnode/src/vnd/vnodeSvr.c
@@ -15,7 +15,11 @@
 
 #include "vnodeInt.h"
 
-void vnodeProcessWMsgs(SVnode *pVnode, SArray *pMsgs) {
+static int vnodeProcessCreateStbReq(SVnode *pVnode, void *pReq);
+static int vnodeProcessCreateTbReq(SVnode *pVnode, SRpcMsg *pMsg, void *pReq, SRpcMsg **pRsp);
+static int vnodeProcessAlterStbReq(SVnode *pVnode, void *pReq);
+
+void vnodePreprocessWriteReqs(SVnode *pVnode, SArray *pMsgs) {
   SNodeMsg *pMsg;
   SRpcMsg  *pRpc;
 
@@ -36,14 +40,9 @@ void vnodeProcessWMsgs(SVnode *pVnode, SArray *pMsgs) {
   }
 
   walFsync(pVnode->pWal, false);
-
-  // TODO: Integrate RAFT module here
-
-  // No results are returned because error handling is difficult
-  // return 0;
 }
 
-int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
+int vnodeProcessWriteReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
   void *ptr = NULL;
 
   if (pVnode->config.streamMode == 0) {
@@ -64,108 +63,16 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
   }
 
   switch (pMsg->msgType) {
-    case TDMT_VND_CREATE_STB: {
-      SVCreateTbReq vCreateTbReq = {0};
-      tDeserializeSVCreateTbReq(POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), &vCreateTbReq);
-      if (metaCreateTable(pVnode->pMeta, &(vCreateTbReq)) < 0) {
-        // TODO: handle error
-      }
-
-      // TODO: to encapsule a free API
-      taosMemoryFree(vCreateTbReq.stbCfg.pSchema);
-      taosMemoryFree(vCreateTbReq.stbCfg.pTagSchema);
-      if (vCreateTbReq.stbCfg.pRSmaParam) {
-        taosMemoryFree(vCreateTbReq.stbCfg.pRSmaParam->pFuncIds);
-        taosMemoryFree(vCreateTbReq.stbCfg.pRSmaParam);
-      }
-      taosMemoryFree(vCreateTbReq.dbFName);
-      taosMemoryFree(vCreateTbReq.name);
-      break;
-    }
-    case TDMT_VND_CREATE_TABLE: {
-      SVCreateTbBatchReq vCreateTbBatchReq = {0};
-      SVCreateTbBatchRsp vCreateTbBatchRsp = {0};
-      tDeserializeSVCreateTbBatchReq(POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), &vCreateTbBatchReq);
-      int reqNum = taosArrayGetSize(vCreateTbBatchReq.pArray);
-      for (int i = 0; i < reqNum; i++) {
-        SVCreateTbReq *pCreateTbReq = taosArrayGet(vCreateTbBatchReq.pArray, i);
-
-        char      tableFName[TSDB_TABLE_FNAME_LEN];
-        SMsgHead *pHead = (SMsgHead *)pMsg->pCont;
-        sprintf(tableFName, "%s.%s", pCreateTbReq->dbFName, pCreateTbReq->name);
-
-        int32_t code = vnodeValidateTableHash(&pVnode->config, tableFName);
-        if (code) {
-          SVCreateTbRsp rsp;
-          rsp.code = code;
-
-          taosArrayPush(vCreateTbBatchRsp.rspList, &rsp);
-        }
-
-        if (metaCreateTable(pVnode->pMeta, pCreateTbReq) < 0) {
-          // TODO: handle error
-          vError("vgId:%d, failed to create table: %s", pVnode->vgId, pCreateTbReq->name);
-        }
-        // TODO: to encapsule a free API
-        taosMemoryFree(pCreateTbReq->name);
-        taosMemoryFree(pCreateTbReq->dbFName);
-        if (pCreateTbReq->type == TD_SUPER_TABLE) {
-          taosMemoryFree(pCreateTbReq->stbCfg.pSchema);
-          taosMemoryFree(pCreateTbReq->stbCfg.pTagSchema);
-          if (pCreateTbReq->stbCfg.pRSmaParam) {
-            taosMemoryFree(pCreateTbReq->stbCfg.pRSmaParam->pFuncIds);
-            taosMemoryFree(pCreateTbReq->stbCfg.pRSmaParam);
-          }
-        } else if (pCreateTbReq->type == TD_CHILD_TABLE) {
-          taosMemoryFree(pCreateTbReq->ctbCfg.pTag);
-        } else {
-          taosMemoryFree(pCreateTbReq->ntbCfg.pSchema);
-          if (pCreateTbReq->ntbCfg.pRSmaParam) {
-            taosMemoryFree(pCreateTbReq->ntbCfg.pRSmaParam->pFuncIds);
-            taosMemoryFree(pCreateTbReq->ntbCfg.pRSmaParam);
-          }
-        }
-      }
-
-      vTrace("vgId:%d process create %" PRIzu " tables", pVnode->vgId, taosArrayGetSize(vCreateTbBatchReq.pArray));
-      taosArrayDestroy(vCreateTbBatchReq.pArray);
-      if (vCreateTbBatchRsp.rspList) {
-        int32_t contLen = tSerializeSVCreateTbBatchRsp(NULL, 0, &vCreateTbBatchRsp);
-        void   *msg = rpcMallocCont(contLen);
-        tSerializeSVCreateTbBatchRsp(msg, contLen, &vCreateTbBatchRsp);
-        taosArrayDestroy(vCreateTbBatchRsp.rspList);
-
-        *pRsp = taosMemoryCalloc(1, sizeof(SRpcMsg));
-        (*pRsp)->msgType = TDMT_VND_CREATE_TABLE_RSP;
-        (*pRsp)->pCont = msg;
-        (*pRsp)->contLen = contLen;
-        (*pRsp)->handle = pMsg->handle;
-        (*pRsp)->ahandle = pMsg->ahandle;
-      }
-      break;
-    }
-    case TDMT_VND_ALTER_STB: {
-      SVCreateTbReq vAlterTbReq = {0};
-      vTrace("vgId:%d, process alter stb req", pVnode->vgId);
-      tDeserializeSVCreateTbReq(POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), &vAlterTbReq);
-      // TODO: to encapsule a free API
-      taosMemoryFree(vAlterTbReq.stbCfg.pSchema);
-      taosMemoryFree(vAlterTbReq.stbCfg.pTagSchema);
-      if (vAlterTbReq.stbCfg.pRSmaParam) {
-        taosMemoryFree(vAlterTbReq.stbCfg.pRSmaParam->pFuncIds);
-        taosMemoryFree(vAlterTbReq.stbCfg.pRSmaParam);
-      }
-      taosMemoryFree(vAlterTbReq.dbFName);
-      taosMemoryFree(vAlterTbReq.name);
-      break;
-    }
+    case TDMT_VND_CREATE_STB:
+      return vnodeProcessCreateStbReq(pVnode, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)));
+    case TDMT_VND_CREATE_TABLE:
+      return vnodeProcessCreateTbReq(pVnode, pMsg, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), pRsp);
+    case TDMT_VND_ALTER_STB:
+      return vnodeProcessAlterStbReq(pVnode, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)));
     case TDMT_VND_DROP_STB:
       vTrace("vgId:%d, process drop stb req", pVnode->vgId);
       break;
     case TDMT_VND_DROP_TABLE:
-      // if (metaDropTable(pVnode->pMeta, vReq.dtReq.uid) < 0) {
-      //   // TODO: handle error
-      // }
       break;
     case TDMT_VND_SUBMIT:
       /*printf("vnode %d write data %ld\n", pVnode->vgId, ver);*/
@@ -199,32 +106,7 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
       }
     } break;
     case TDMT_VND_CREATE_SMA: {  // timeRangeSMA
-#if 0
 
-      SSmaCfg vCreateSmaReq = {0};
-      if (tDeserializeSVCreateTSmaReq(POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), &vCreateSmaReq) == NULL) {
-        terrno = TSDB_CODE_OUT_OF_MEMORY;
-        vWarn("vgId:%d TDMT_VND_CREATE_SMA received but deserialize failed since %s", pVnode->config.vgId,
-              terrstr(terrno));
-        return -1;
-      }
-      vDebug("vgId:%d TDMT_VND_CREATE_SMA msg received for %s:%" PRIi64, pVnode->config.vgId,
-             vCreateSmaReq.tSma.indexName, vCreateSmaReq.tSma.indexUid);
-
-      // record current timezone of server side
-      vCreateSmaReq.tSma.timezoneInt = tsTimezone;
-
-      if (metaCreateTSma(pVnode->pMeta, &vCreateSmaReq) < 0) {
-        // TODO: handle error
-        tdDestroyTSma(&vCreateSmaReq.tSma);
-        return -1;
-      }
-
-      tsdbTSmaAdd(pVnode->pTsdb, 1);
-
-      tdDestroyTSma(&vCreateSmaReq.tSma);
-      // TODO: return directly or go on follow steps?
-#endif
       if (tsdbCreateTSma(pVnode->pTsdb, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead))) < 0) {
         // TODO
       }
@@ -235,33 +117,7 @@ int vnodeApplyWMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
       //   if (tsdbDropTSma(pVnode->pTsdb, POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead))) < 0) {
       //     // TODO
       //   }
-#if 0    
-      tsdbTSmaSub(pVnode->pTsdb, 1);
-      SVDropTSmaReq vDropSmaReq = {0};
-      if (tDeserializeSVDropTSmaReq(POINTER_SHIFT(pMsg->pCont, sizeof(SMsgHead)), &vDropSmaReq) == NULL) {
-        terrno = TSDB_CODE_OUT_OF_MEMORY;
-        return -1;
-      }
 
-      // TODO: send msg to stream computing to drop tSma
-      // if ((send msg to stream computing) < 0) {
-      //   tdDestroyTSma(&vCreateSmaReq);
-      //   return -1;
-      // }
-      // 
-
-      if (metaDropTSma(pVnode->pMeta, vDropSmaReq.indexUid) < 0) {
-        // TODO: handle error
-        return -1;
-      }
-
-      if(tsdbDropTSmaData(pVnode->pTsdb, vDropSmaReq.indexUid) < 0) {
-        // TODO: handle error
-        return -1;
-      }
-
-      // TODO: return directly or go on follow steps?
-#endif
     } break;
     default:
       ASSERT(0);
@@ -341,4 +197,104 @@ void smaHandleRes(void *pVnode, int64_t smaId, const SArray *data) {
 int vnodeProcessSyncReq(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
   /*vInfo("sync message is processed");*/
   return 0;
+}
+
+static int vnodeProcessCreateStbReq(SVnode *pVnode, void *pReq) {
+  SVCreateTbReq vCreateTbReq = {0};
+  tDeserializeSVCreateTbReq(pReq, &vCreateTbReq);
+  if (metaCreateTable(pVnode->pMeta, &(vCreateTbReq)) < 0) {
+    // TODO
+    return -1;
+  }
+
+  taosMemoryFree(vCreateTbReq.stbCfg.pSchema);
+  taosMemoryFree(vCreateTbReq.stbCfg.pTagSchema);
+  if (vCreateTbReq.stbCfg.pRSmaParam) {
+    taosMemoryFree(vCreateTbReq.stbCfg.pRSmaParam->pFuncIds);
+    taosMemoryFree(vCreateTbReq.stbCfg.pRSmaParam);
+  }
+  taosMemoryFree(vCreateTbReq.dbFName);
+  taosMemoryFree(vCreateTbReq.name);
+
+  return 0;
+}
+
+static int vnodeProcessCreateTbReq(SVnode *pVnode, SRpcMsg *pMsg, void *pReq, SRpcMsg **pRsp) {
+  SVCreateTbBatchReq vCreateTbBatchReq = {0};
+  SVCreateTbBatchRsp vCreateTbBatchRsp = {0};
+  tDeserializeSVCreateTbBatchReq(pReq, &vCreateTbBatchReq);
+  int reqNum = taosArrayGetSize(vCreateTbBatchReq.pArray);
+  for (int i = 0; i < reqNum; i++) {
+    SVCreateTbReq *pCreateTbReq = taosArrayGet(vCreateTbBatchReq.pArray, i);
+
+    char      tableFName[TSDB_TABLE_FNAME_LEN];
+    SMsgHead *pHead = (SMsgHead *)pMsg->pCont;
+    sprintf(tableFName, "%s.%s", pCreateTbReq->dbFName, pCreateTbReq->name);
+
+    int32_t code = vnodeValidateTableHash(&pVnode->config, tableFName);
+    if (code) {
+      SVCreateTbRsp rsp;
+      rsp.code = code;
+
+      taosArrayPush(vCreateTbBatchRsp.rspList, &rsp);
+    }
+
+    if (metaCreateTable(pVnode->pMeta, pCreateTbReq) < 0) {
+      // TODO: handle error
+      vError("vgId:%d, failed to create table: %s", pVnode->vgId, pCreateTbReq->name);
+    }
+    // TODO: to encapsule a free API
+    taosMemoryFree(pCreateTbReq->name);
+    taosMemoryFree(pCreateTbReq->dbFName);
+    if (pCreateTbReq->type == TD_SUPER_TABLE) {
+      taosMemoryFree(pCreateTbReq->stbCfg.pSchema);
+      taosMemoryFree(pCreateTbReq->stbCfg.pTagSchema);
+      if (pCreateTbReq->stbCfg.pRSmaParam) {
+        taosMemoryFree(pCreateTbReq->stbCfg.pRSmaParam->pFuncIds);
+        taosMemoryFree(pCreateTbReq->stbCfg.pRSmaParam);
+      }
+    } else if (pCreateTbReq->type == TD_CHILD_TABLE) {
+      taosMemoryFree(pCreateTbReq->ctbCfg.pTag);
+    } else {
+      taosMemoryFree(pCreateTbReq->ntbCfg.pSchema);
+      if (pCreateTbReq->ntbCfg.pRSmaParam) {
+        taosMemoryFree(pCreateTbReq->ntbCfg.pRSmaParam->pFuncIds);
+        taosMemoryFree(pCreateTbReq->ntbCfg.pRSmaParam);
+      }
+    }
+  }
+
+  vTrace("vgId:%d process create %" PRIzu " tables", pVnode->vgId, taosArrayGetSize(vCreateTbBatchReq.pArray));
+  taosArrayDestroy(vCreateTbBatchReq.pArray);
+  if (vCreateTbBatchRsp.rspList) {
+    int32_t contLen = tSerializeSVCreateTbBatchRsp(NULL, 0, &vCreateTbBatchRsp);
+    void   *msg = rpcMallocCont(contLen);
+    tSerializeSVCreateTbBatchRsp(msg, contLen, &vCreateTbBatchRsp);
+    taosArrayDestroy(vCreateTbBatchRsp.rspList);
+
+    *pRsp = taosMemoryCalloc(1, sizeof(SRpcMsg));
+    (*pRsp)->msgType = TDMT_VND_CREATE_TABLE_RSP;
+    (*pRsp)->pCont = msg;
+    (*pRsp)->contLen = contLen;
+    (*pRsp)->handle = pMsg->handle;
+    (*pRsp)->ahandle = pMsg->ahandle;
+  }
+
+  return 0;
+}
+
+static int vnodeProcessAlterStbReq(SVnode *pVnode, void *pReq) {
+  SVCreateTbReq vAlterTbReq = {0};
+  vTrace("vgId:%d, process alter stb req", pVnode->vgId);
+  tDeserializeSVCreateTbReq(pReq, &vAlterTbReq);
+  // TODO: to encapsule a free API
+  taosMemoryFree(vAlterTbReq.stbCfg.pSchema);
+  taosMemoryFree(vAlterTbReq.stbCfg.pTagSchema);
+  if (vAlterTbReq.stbCfg.pRSmaParam) {
+    taosMemoryFree(vAlterTbReq.stbCfg.pRSmaParam->pFuncIds);
+    taosMemoryFree(vAlterTbReq.stbCfg.pRSmaParam);
+  }
+  taosMemoryFree(vAlterTbReq.dbFName);
+  taosMemoryFree(vAlterTbReq.name);
+  return 0;
 }
\ No newline at end of file