diff --git a/include/libs/qcom/query.h b/include/libs/qcom/query.h
index 97ce5ae0320a5fbebd162f0fba034355ea15b831..ffb982af8e63e7c4ed8b5c4d5bbb917a82c19589 100644
--- a/include/libs/qcom/query.h
+++ b/include/libs/qcom/query.h
@@ -129,6 +129,7 @@ typedef struct SDBVgInfo {
   int32_t   numOfTable;  // DB's table num, unit is TSDB_TABLE_NUM_UNIT
   int64_t   stateTs;
   SHashObj* vgHash;      // key:vgId, value:SVgroupInfo
+  SArray*   vgArray;
 } SDBVgInfo;
 
 typedef struct SUseDbOutput {
@@ -238,6 +239,7 @@ int32_t dataConverToStr(char* str, int type, void* buf, int32_t bufSize, int32_t
 char*   parseTagDatatoJson(void* p);
 int32_t cloneTableMeta(STableMeta* pSrc, STableMeta** pDst);
 int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst);
+void    freeVgInfo(SDBVgInfo* vgInfo);
 
 extern int32_t (*queryBuildMsg[TDMT_MAX])(void* input, char** msg, int32_t msgSize, int32_t* msgLen,
                                           void* (*mallocFp)(int64_t));
diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index c95d0fe4620f7a068813701588da77d9d149a936..ba9990658955f29b437ae0f17c36e24b3a6e84c3 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -762,7 +762,6 @@ int32_t ctgCloneMetaOutput(STableMetaOutput* output, STableMetaOutput** pOutput)
 int32_t ctgGenerateVgList(SCatalog* pCtg, SHashObj* vgHash, SArray** pList);
 void    ctgFreeJob(void* job);
 void    ctgFreeHandleImpl(SCatalog* pCtg);
-void    ctgFreeVgInfo(SDBVgInfo* vgInfo);
 int32_t ctgGetVgInfoFromHashValue(SCatalog* pCtg, SDBVgInfo* dbInfo, const SName* pTableName, SVgroupInfo* pVgroup);
 int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo* dbInfo, SCtgTbHashsCtx* pCtx,
                                    char* dbFName, SArray* pNames, bool update);
@@ -789,6 +788,8 @@ int32_t ctgRemoveTbMeta(SCatalog* pCtg, SName* pTableName);
 int32_t ctgGetTbHashVgroup(SCatalog* pCtg, SRequestConnInfo* pConn, const SName* pTableName, SVgroupInfo* pVgroup, bool* exists);
 SName*  ctgGetFetchName(SArray* pNames, SCtgFetch* pFetch);
 int32_t ctgdGetOneHandle(SCatalog **pHandle);
+int     ctgVgInfoComp(const void* lp, const void* rp);
+int32_t ctgMakeVgArray(SDBVgInfo* dbInfo);
 
 extern SCatalogMgmt gCtgMgmt;
 extern SCtgDebug    gCTGDebug;
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index 1d749577185c882d70cd68d59b7950d87a2ac80e..1b9bf7f99c0984784b20c8b0db8022dd071490ad 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -505,8 +505,7 @@ _return:
   taosMemoryFreeClear(tbMeta);
 
   if (vgInfo) {
-    taosHashCleanup(vgInfo->vgHash);
-    taosMemoryFreeClear(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   if (vgList) {
@@ -546,8 +545,7 @@ _return:
   }
 
   if (vgInfo) {
-    taosHashCleanup(vgInfo->vgHash);
-    taosMemoryFreeClear(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   CTG_RET(code);
@@ -778,8 +776,7 @@ _return:
   }
 
   if (vgInfo) {
-    taosHashCleanup(vgInfo->vgHash);
-    taosMemoryFreeClear(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   CTG_API_LEAVE(code);
@@ -836,8 +833,7 @@ _return:
     ctgRUnlockVgInfo(dbCache);
     ctgReleaseDBCache(pCtg, dbCache);
   } else if (dbInfo) {
-    taosHashCleanup(dbInfo->vgHash);
-    taosMemoryFreeClear(dbInfo);
+    freeVgInfo(dbInfo);
   }
 
   CTG_API_LEAVE(code);
@@ -849,7 +845,7 @@ int32_t catalogUpdateDBVgInfo(SCatalog* pCtg, const char* dbFName, uint64_t dbId
   int32_t code = 0;
 
   if (NULL == pCtg || NULL == dbFName || NULL == dbInfo) {
-    ctgFreeVgInfo(dbInfo);
+    freeVgInfo(dbInfo);
     CTG_ERR_JRET(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
diff --git a/source/libs/catalog/src/ctgCache.c b/source/libs/catalog/src/ctgCache.c
index 19b7ee32aebc05c211d564e47fae3af7eaeb4f81..f41058584f322de823c48d85239aeb43a25f89a9 100644
--- a/source/libs/catalog/src/ctgCache.c
+++ b/source/libs/catalog/src/ctgCache.c
@@ -226,6 +226,7 @@ _return:
   return TSDB_CODE_SUCCESS;
 }
 
+/*
 int32_t ctgAcquireStbMetaFromCache(SCatalog *pCtg, char *dbFName, uint64_t suid, SCtgDBCache **pDb, SCtgTbCache **pTb) {
   SCtgDBCache *dbCache = NULL;
   SCtgTbCache *pCache = NULL;
@@ -276,6 +277,49 @@ _return:
 
   return TSDB_CODE_SUCCESS;
 }
+*/
+
+int32_t ctgAcquireStbMetaFromCache(SCtgDBCache *dbCache, SCatalog *pCtg, char *dbFName, uint64_t suid, SCtgTbCache **pTb) {
+  SCtgTbCache *pCache = NULL;
+  char *stName = taosHashAcquire(dbCache->stbCache, &suid, sizeof(suid));
+  if (NULL == stName) {
+    ctgDebug("stb 0x%" PRIx64 " not in cache, dbFName:%s", suid, dbFName);
+    goto _return;
+  }
+
+  pCache = taosHashAcquire(dbCache->tbCache, stName, strlen(stName));
+  if (NULL == pCache) {
+    ctgDebug("stb 0x%" PRIx64 " name %s not in cache, dbFName:%s", suid, stName, dbFName);
+    taosHashRelease(dbCache->stbCache, stName);
+    goto _return;
+  }
+
+  taosHashRelease(dbCache->stbCache, stName);
+
+  CTG_LOCK(CTG_READ, &pCache->metaLock);
+  if (NULL == pCache->pMeta) {
+    ctgDebug("stb 0x%" PRIx64 " meta not in cache, dbFName:%s", suid, dbFName);
+    goto _return;
+  }
+
+  *pTb = pCache;
+
+  ctgDebug("stb 0x%" PRIx64 " meta got in cache, dbFName:%s", suid, dbFName);
+
+  CTG_CACHE_STAT_INC(numOfMetaHit, 1);
+
+  return TSDB_CODE_SUCCESS;
+
+_return:
+
+  ctgReleaseTbMetaToCache(pCtg, dbCache, pCache);
+
+  CTG_CACHE_STAT_INC(numOfMetaMiss, 1);
+
+  *pTb = NULL;
+
+  return TSDB_CODE_SUCCESS;
+}
 
 int32_t ctgAcquireTbIndexFromCache(SCatalog *pCtg, char *dbFName, char *tbName, SCtgDBCache **pDb, SCtgTbCache **pTb) {
   SCtgDBCache *dbCache = NULL;
@@ -384,13 +428,19 @@ int32_t ctgReadTbMetaFromCache(SCatalog *pCtg, SCtgTbMetaCtx *ctx, STableMeta **
 
   memcpy(*pTableMeta, tbMeta, metaSize);
 
-  ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
+  //ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
+
+  if (tbCache) {
+    CTG_UNLOCK(CTG_READ, &tbCache->metaLock);
+    taosHashRelease(dbCache->tbCache, tbCache);
+  }
+  
   ctgDebug("Got ctb %s meta from cache, will continue to get its stb meta, type:%d, dbFName:%s", ctx->pName->tname,
            ctx->tbInfo.tbType, dbFName);
 
-  ctgAcquireStbMetaFromCache(pCtg, dbFName, ctx->tbInfo.suid, &dbCache, &tbCache);
+  ctgAcquireStbMetaFromCache(dbCache, pCtg, dbFName, ctx->tbInfo.suid, &tbCache);
   if (NULL == tbCache) {
-    ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
+    //ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
     taosMemoryFreeClear(*pTableMeta);
     ctgDebug("stb 0x%" PRIx64 " meta not in cache", ctx->tbInfo.suid);
     return TSDB_CODE_SUCCESS;
@@ -460,12 +510,17 @@ int32_t ctgReadTbVerFromCache(SCatalog *pCtg, SName *pTableName, int32_t *sver,
 
   // PROCESS FOR CHILD TABLE
 
-  ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
+  //ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
+  if (tbCache) {
+    CTG_UNLOCK(CTG_READ, &tbCache->metaLock);
+    taosHashRelease(dbCache->tbCache, tbCache);
+  }
+  
   ctgDebug("Got ctb %s ver from cache, will continue to get its stb ver, dbFName:%s", pTableName->tname, dbFName);
 
-  ctgAcquireStbMetaFromCache(pCtg, dbFName, *suid, &dbCache, &tbCache);
+  ctgAcquireStbMetaFromCache(dbCache, pCtg, dbFName, *suid, &tbCache);
   if (NULL == tbCache) {
-    ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
+    //ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
     ctgDebug("stb 0x%" PRIx64 " meta not in cache", *suid);
     return TSDB_CODE_SUCCESS;
   }
@@ -794,7 +849,7 @@ int32_t ctgUpdateVgroupEnqueue(SCatalog *pCtg, const char *dbFName, int64_t dbId
   if (NULL == msg) {
     ctgError("malloc %d failed", (int32_t)sizeof(SCtgUpdateVgMsg));
     taosMemoryFree(op);
-    ctgFreeVgInfo(dbInfo);
+    freeVgInfo(dbInfo);
     CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
   }
 
@@ -803,6 +858,14 @@ int32_t ctgUpdateVgroupEnqueue(SCatalog *pCtg, const char *dbFName, int64_t dbId
     dbFName = p + 1;
   }
 
+  code = ctgMakeVgArray(dbInfo);
+  if (code) {
+    taosMemoryFree(op);
+    taosMemoryFree(msg);
+    freeVgInfo(dbInfo);
+    CTG_ERR_RET(code);
+  }
+
   tstrncpy(msg->dbFName, dbFName, sizeof(msg->dbFName));
   msg->pCtg = pCtg;
   msg->dbId = dbId;
@@ -816,7 +879,7 @@ int32_t ctgUpdateVgroupEnqueue(SCatalog *pCtg, const char *dbFName, int64_t dbId
 
 _return:
 
-  ctgFreeVgInfo(dbInfo);
+  freeVgInfo(dbInfo);
   CTG_RET(code);
 }
 
@@ -1549,6 +1612,20 @@ void ctgFreeAllInstance(void) {
   taosHashClear(gCtgMgmt.pCluster);
 }
 
+int32_t ctgVgInfoIdComp(void const* lp, void const* rp) {
+  int32_t*    key = (int32_t*)lp;
+  SVgroupInfo* pVg = (SVgroupInfo*)rp;
+
+  if (*key < pVg->vgId) {
+    return -1;
+  } else if (*key > pVg->vgId) {
+    return 1;
+  }
+
+  return 0;
+}
+
+
 int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
   int32_t          code = 0;
   SCtgUpdateVgMsg *msg = operation->data;
@@ -1600,7 +1677,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
       goto _return;
     }
 
-    ctgFreeVgInfo(vgInfo);
+    freeVgInfo(vgInfo);
   }
 
   vgCache->vgInfo = dbInfo;
@@ -1621,7 +1698,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
 
 _return:
 
-  ctgFreeVgInfo(msg->dbInfo);
+  freeVgInfo(msg->dbInfo);
   taosMemoryFreeClear(msg);
 
   CTG_RET(code);
@@ -1674,7 +1751,7 @@ int32_t ctgOpDropDbVgroup(SCtgCacheOperation *operation) {
 
   CTG_ERR_JRET(ctgWLockVgInfo(pCtg, dbCache));
 
-  ctgFreeVgInfo(dbCache->vgCache.vgInfo);
+  freeVgInfo(dbCache->vgCache.vgInfo);
   dbCache->vgCache.vgInfo = NULL;
 
   ctgDebug("db vgInfo removed, dbFName:%s", msg->dbFName);
@@ -1930,7 +2007,13 @@ int32_t ctgOpUpdateEpset(SCtgCacheOperation *operation) {
 
   SVgroupInfo *pInfo = taosHashGet(vgInfo->vgHash, &msg->vgId, sizeof(msg->vgId));
   if (NULL == pInfo) {
-    ctgDebug("no vgroup %d in db %s, ignore epset update", msg->vgId, msg->dbFName);
+    ctgDebug("no vgroup %d in db %s vgHash, ignore epset update", msg->vgId, msg->dbFName);
+    goto _return;
+  }
+
+  SVgroupInfo *pInfo2 = taosArraySearch(vgInfo->vgArray, &msg->vgId, ctgVgInfoIdComp, TD_EQ);
+  if (NULL == pInfo2) {
+    ctgDebug("no vgroup %d in db %s vgArray, ignore epset update", msg->vgId, msg->dbFName);
     goto _return;
   }
 
@@ -1941,6 +2024,7 @@ int32_t ctgOpUpdateEpset(SCtgCacheOperation *operation) {
            msg->epSet.numOfEps, pNewEp->fqdn, pNewEp->port, msg->dbFName);
 
   pInfo->epSet = msg->epSet;
+  pInfo2->epSet = msg->epSet;
 
 _return:
 
@@ -2057,7 +2141,7 @@ void ctgFreeCacheOperationData(SCtgCacheOperation *op) {
   switch (op->opId) {
     case CTG_OP_UPDATE_VGROUP: {
       SCtgUpdateVgMsg *msg = op->data;
-      ctgFreeVgInfo(msg->dbInfo);
+      freeVgInfo(msg->dbInfo);
       taosMemoryFreeClear(op->data);
       break;
     }
diff --git a/source/libs/catalog/src/ctgUtil.c b/source/libs/catalog/src/ctgUtil.c
index f795be3ac2ab41ebb40e818584c3be59841995be..802ecde63eaae46645712a5d3f60ae76cdfeee6f 100644
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@@ -231,20 +231,7 @@ void ctgFreeTbCache(SCtgDBCache* dbCache) {
   CTG_CACHE_STAT_DEC(numOfTbl, tblNum);
 }
 
-void ctgFreeVgInfo(SDBVgInfo* vgInfo) {
-  if (NULL == vgInfo) {
-    return;
-  }
-
-  if (vgInfo->vgHash) {
-    taosHashCleanup(vgInfo->vgHash);
-    vgInfo->vgHash = NULL;
-  }
-
-  taosMemoryFreeClear(vgInfo);
-}
-
-void ctgFreeVgInfoCache(SCtgDBCache* dbCache) { ctgFreeVgInfo(dbCache->vgCache.vgInfo); }
+void ctgFreeVgInfoCache(SCtgDBCache* dbCache) { freeVgInfo(dbCache->vgCache.vgInfo); }
 
 void ctgFreeDbCache(SCtgDBCache* dbCache) {
   if (NULL == dbCache) {
@@ -366,8 +353,7 @@ void ctgFreeSUseDbOutput(SUseDbOutput* pOutput) {
   }
 
   if (pOutput->dbVgroup) {
-    taosHashCleanup(pOutput->dbVgroup->vgHash);
-    taosMemoryFreeClear(pOutput->dbVgroup);
+    freeVgInfo(pOutput->dbVgroup);
   }
 
   taosMemoryFree(pOutput);
@@ -573,8 +559,7 @@ void ctgFreeSubTaskRes(CTG_TASK_TYPE type, void** pRes) {
     case CTG_TASK_GET_DB_VGROUP: {
       if (*pRes) {
         SDBVgInfo* pInfo = (SDBVgInfo*)*pRes;
-        taosHashCleanup(pInfo->vgHash);
-        taosMemoryFreeClear(*pRes);
+        freeVgInfo(pInfo);
       }
       break;
     }
@@ -837,10 +822,36 @@ _return:
   CTG_RET(code);
 }
 
+int ctgVgInfoComp(const void* lp, const void* rp) {
+  SVgroupInfo* pLeft = (SVgroupInfo*)lp;
+  SVgroupInfo* pRight = (SVgroupInfo*)rp;
+  if (pLeft->hashBegin < pRight->hashBegin) {
+    return -1;
+  } else if (pLeft->hashBegin > pRight->hashBegin) {
+    return 1;
+  }
+
+  return 0;
+}
+
+int32_t ctgHashValueComp(void const* lp, void const* rp) {
+  uint32_t*    key = (uint32_t*)lp;
+  SVgroupInfo* pVg = (SVgroupInfo*)rp;
+
+  if (*key < pVg->hashBegin) {
+    return -1;
+  } else if (*key > pVg->hashEnd) {
+    return 1;
+  }
+
+  return 0;
+}
+
 int32_t ctgGetVgInfoFromHashValue(SCatalog* pCtg, SDBVgInfo* dbInfo, const SName* pTableName, SVgroupInfo* pVgroup) {
   int32_t code = 0;
+  CTG_ERR_RET(ctgMakeVgArray(dbInfo));
 
-  int32_t vgNum = taosHashGetSize(dbInfo->vgHash);
+  int32_t vgNum = taosArrayGetSize(dbInfo->vgArray);
   char    db[TSDB_DB_FNAME_LEN] = {0};
   tNameGetFullDbName(pTableName, db);
 
@@ -856,6 +867,9 @@ int32_t ctgGetVgInfoFromHashValue(SCatalog* pCtg, SDBVgInfo* dbInfo, const SName
   uint32_t hashValue = taosGetTbHashVal(tbFullName, (uint32_t)strlen(tbFullName), dbInfo->hashMethod,
                                         dbInfo->hashPrefix, dbInfo->hashSuffix);
 
+  vgInfo = taosArraySearch(dbInfo->vgArray, &hashValue, ctgHashValueComp, TD_EQ);
+
+/*
   void* pIter = taosHashIterate(dbInfo->vgHash, NULL);
   while (pIter) {
     vgInfo = pIter;
@@ -867,10 +881,11 @@ int32_t ctgGetVgInfoFromHashValue(SCatalog* pCtg, SDBVgInfo* dbInfo, const SName
     pIter = taosHashIterate(dbInfo->vgHash, pIter);
     vgInfo = NULL;
   }
+*/
 
   if (NULL == vgInfo) {
     ctgError("no hash range found for hash value [%u], db:%s, numOfVgId:%d", hashValue, db,
-             taosHashGetSize(dbInfo->vgHash));
+             (int32_t)taosArrayGetSize(dbInfo->vgArray));
     CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -883,37 +898,15 @@ int32_t ctgGetVgInfoFromHashValue(SCatalog* pCtg, SDBVgInfo* dbInfo, const SName
   CTG_RET(code);
 }
 
-int32_t ctgHashValueComp(void const* lp, void const* rp) {
-  uint32_t*    key = (uint32_t*)lp;
-  SVgroupInfo* pVg = *(SVgroupInfo**)rp;
-
-  if (*key < pVg->hashBegin) {
-    return -1;
-  } else if (*key > pVg->hashEnd) {
-    return 1;
-  }
-
-  return 0;
-}
-
-int ctgVgInfoComp(const void* lp, const void* rp) {
-  SVgroupInfo* pLeft = *(SVgroupInfo**)lp;
-  SVgroupInfo* pRight = *(SVgroupInfo**)rp;
-  if (pLeft->hashBegin < pRight->hashBegin) {
-    return -1;
-  } else if (pLeft->hashBegin > pRight->hashBegin) {
-    return 1;
-  }
-
-  return 0;
-}
-
 int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo* dbInfo, SCtgTbHashsCtx* pCtx,
                                    char* dbFName, SArray* pNames, bool update) {
   int32_t   code = 0;
   SCtgTask* pTask = tReq->pTask;
   SMetaRes  res = {0};
-  int32_t   vgNum = taosHashGetSize(dbInfo->vgHash);
+
+  CTG_ERR_RET(ctgMakeVgArray(dbInfo));
+
+  int32_t   vgNum = taosArrayGetSize(dbInfo->vgArray);
   if (vgNum <= 0) {
     ctgError("db vgroup cache invalid, db:%s, vgroup number:%d", dbFName, vgNum);
     CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
@@ -923,20 +916,13 @@ int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo*
   int32_t      tbNum = taosArrayGetSize(pNames);
 
   if (1 == vgNum) {
-    void* pIter = taosHashIterate(dbInfo->vgHash, NULL);
-    if (NULL == pIter) {
-      ctgError("empty vgHash, db:%s, vgroup number:%d", dbFName, vgNum);
-      CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
-    }
-    
     for (int32_t i = 0; i < tbNum; ++i) {
       vgInfo = taosMemoryMalloc(sizeof(SVgroupInfo));
       if (NULL == vgInfo) {
-        taosHashCancelIterate(dbInfo->vgHash, pIter);
         CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
       }
 
-      *vgInfo = *(SVgroupInfo*)pIter;
+      *vgInfo = *(SVgroupInfo*)taosArrayGet(dbInfo->vgArray, 0);
 
       ctgDebug("Got tb hash vgroup, vgId:%d, epNum %d, current %s port %d", vgInfo->vgId, vgInfo->epSet.numOfEps,
                vgInfo->epSet.eps[vgInfo->epSet.inUse].fqdn, vgInfo->epSet.eps[vgInfo->epSet.inUse].port);
@@ -951,19 +937,9 @@ int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo*
       }
     }
 
-    taosHashCancelIterate(dbInfo->vgHash, pIter);
     return TSDB_CODE_SUCCESS;
   }
 
-  SArray* pVgList = taosArrayInit(vgNum, POINTER_BYTES);
-  void*   pIter = taosHashIterate(dbInfo->vgHash, NULL);
-  while (pIter) {
-    taosArrayPush(pVgList, &pIter);
-    pIter = taosHashIterate(dbInfo->vgHash, pIter);
-  }
-
-  taosArraySort(pVgList, ctgVgInfoComp);
-
   char tbFullName[TSDB_TABLE_FNAME_LEN];
   sprintf(tbFullName, "%s.", dbFName);
   int32_t offset = strlen(tbFullName);
@@ -979,20 +955,15 @@ int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo*
     uint32_t hashValue = taosGetTbHashVal(tbFullName, (uint32_t)strlen(tbFullName), dbInfo->hashMethod,
                                           dbInfo->hashPrefix, dbInfo->hashSuffix);
 
-    SVgroupInfo** p = taosArraySearch(pVgList, &hashValue, ctgHashValueComp, TD_EQ);
-
-    if (NULL == p) {
+    vgInfo = taosArraySearch(dbInfo->vgArray, &hashValue, ctgHashValueComp, TD_EQ);
+    if (NULL == vgInfo) {
       ctgError("no hash range found for hash value [%u], db:%s, numOfVgId:%d", hashValue, dbFName,
-               taosHashGetSize(dbInfo->vgHash));
-      taosArrayDestroy(pVgList);
+               (int32_t)taosArrayGetSize(dbInfo->vgArray));
       CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
     }
 
-    vgInfo = *p;
-
     SVgroupInfo* pNewVg = taosMemoryMalloc(sizeof(SVgroupInfo));
     if (NULL == pNewVg) {
-      taosArrayDestroy(pVgList);
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
 
@@ -1012,8 +983,6 @@ int32_t ctgGetVgInfosFromHashValue(SCatalog* pCtg, SCtgTaskReq* tReq, SDBVgInfo*
     }
   }
 
-  taosArrayDestroy(pVgList);
-
   CTG_RET(code);
 }
 
@@ -1057,7 +1026,33 @@ int32_t ctgDbVgVersionSortCompare(const void* key1, const void* key2) {
   }
 }
 
+int32_t ctgMakeVgArray(SDBVgInfo* dbInfo) {
+  if (NULL == dbInfo) {
+    return TSDB_CODE_SUCCESS;
+  }
+  
+  if (dbInfo->vgHash && NULL == dbInfo->vgArray) {
+    dbInfo->vgArray = taosArrayInit(100, sizeof(SVgroupInfo));
+    if (NULL == dbInfo->vgArray) {
+      CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
+    }
+    
+    void*   pIter = taosHashIterate(dbInfo->vgHash, NULL);
+    while (pIter) {
+      taosArrayPush(dbInfo->vgArray, pIter);
+      pIter = taosHashIterate(dbInfo->vgHash, pIter);
+    }
+    
+    taosArraySort(dbInfo->vgArray, ctgVgInfoComp);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t ctgCloneVgInfo(SDBVgInfo* src, SDBVgInfo** dst) {
+  CTG_ERR_RET(ctgMakeVgArray(src));
+
   *dst = taosMemoryMalloc(sizeof(SDBVgInfo));
   if (NULL == *dst) {
     qError("malloc %d failed", (int32_t)sizeof(SDBVgInfo));
@@ -1090,6 +1085,10 @@ int32_t ctgCloneVgInfo(SDBVgInfo* src, SDBVgInfo** dst) {
     pIter = taosHashIterate(src->vgHash, pIter);
   }
 
+  if (src->vgArray) {
+    (*dst)->vgArray = taosArrayDup(src->vgArray, NULL);
+  }
+
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/source/libs/qcom/src/queryUtil.c b/source/libs/qcom/src/queryUtil.c
index 938be3fcbd246eb8ce7337928c693c82a7dea8d7..c74882cf23dac901eab09b779afd56cbfb55dcaa 100644
--- a/source/libs/qcom/src/queryUtil.c
+++ b/source/libs/qcom/src/queryUtil.c
@@ -447,6 +447,19 @@ int32_t cloneTableMeta(STableMeta* pSrc, STableMeta** pDst) {
   return TSDB_CODE_SUCCESS;
 }
 
+
+void freeVgInfo(SDBVgInfo* vgInfo) {
+  if (NULL == vgInfo) {
+    return;
+  }
+
+  taosHashCleanup(vgInfo->vgHash);
+  taosArrayDestroy(vgInfo->vgArray);
+
+  taosMemoryFreeClear(vgInfo);
+}
+
+
 int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst) {
   if (NULL == pSrc) {
     *pDst = NULL;
@@ -475,8 +488,7 @@ int32_t cloneDbVgInfo(SDBVgInfo* pSrc, SDBVgInfo** pDst) {
       if (0 != taosHashPut((*pDst)->vgHash, vgId, sizeof(*vgId), vgInfo, sizeof(*vgInfo))) {
         qError("taosHashPut failed, vgId:%d", vgInfo->vgId);
         taosHashCancelIterate(pSrc->vgHash, pIter);
-        taosHashCleanup((*pDst)->vgHash);
-        taosMemoryFreeClear(*pDst);
+        freeVgInfo(*pDst);
         return TSDB_CODE_OUT_OF_MEMORY;
       }