diff --git a/include/libs/catalog/catalog.h b/include/libs/catalog/catalog.h
index f3600a509e8be0946b5845634b13c9e6a4a9ed98..c0116051af2f2b3dc6753c96b167427a931980d1 100644
--- a/include/libs/catalog/catalog.h
+++ b/include/libs/catalog/catalog.h
@@ -292,6 +292,8 @@ int32_t catalogUpdateVgEpSet(SCatalog* pCtg, const char* dbFName, int32_t vgId,
 
 int32_t ctgdLaunchAsyncCall(SCatalog* pCtg, SRequestConnInfo* pConn, uint64_t reqId, bool forceUpdate);
 
+int32_t catalogClearCache(void);
+
 /**
  * Destroy catalog and relase all resources
  */
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 6f0f1c7f419a5949a5a352db878e379814343f4c..d04cc90ee44120dc9dce246fe20df1daf8c3aa26 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -609,6 +609,9 @@ void schedulerExecCb(SQueryResult* pResult, void* param, int32_t code) {
   SRequestObj* pRequest = (SRequestObj*)param;
   pRequest->code = code;
 
+  tscDebug("0x%" PRIx64 " enter scheduler exec cb, code:%d - %s, reqId:0x%" PRIx64,
+             pRequest->self, code, tstrerror(code), pRequest->requestId);
+
   STscObj* pTscObj = pRequest->pTscObj;
   if (code != TSDB_CODE_SUCCESS && NEED_CLIENT_HANDLE_ERROR(code)) {
     tscDebug("0x%" PRIx64 " client retry to handle the error, code:%d - %s, tryCount:%d, reqId:0x%" PRIx64,
diff --git a/source/client/src/clientMain.c b/source/client/src/clientMain.c
index 2111ff4508b5b7ae18bcaa7ef4e7ce894e73261e..9a5d5bbecaa4b0b91da751ebc98bad9cdde81278 100644
--- a/source/client/src/clientMain.c
+++ b/source/client/src/clientMain.c
@@ -837,6 +837,9 @@ static void fetchCallback(void *pResult, void *param, int32_t code) {
 
   SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
 
+  tscDebug("0x%" PRIx64 " enter scheduler fetch cb, code:%d - %s, reqId:0x%" PRIx64,
+             pRequest->self, code, tstrerror(code), pRequest->requestId);
+
   pResultInfo->pData = pResult;
   pResultInfo->numOfRows = 0;
 
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 2e1a539980e7e9c3221ef38663d0920c6b0266e3..7457fe7eb69434bcc2c766cba168869ee4174d1a 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -60,7 +60,7 @@ int32_t tsNumOfVnodeWriteThreads = 2;
 int32_t tsNumOfVnodeSyncThreads = 2;
 int32_t tsNumOfVnodeMergeThreads = 2;
 int32_t tsNumOfQnodeQueryThreads = 2;
-int32_t tsNumOfQnodeFetchThreads = 2;
+int32_t tsNumOfQnodeFetchThreads = 1;
 int32_t tsNumOfSnodeSharedThreads = 2;
 int32_t tsNumOfSnodeUniqueThreads = 2;
 
@@ -418,8 +418,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   tsNumOfVnodeQueryThreads = TMAX(tsNumOfVnodeQueryThreads, 1);
   if (cfgAddInt32(pCfg, "numOfVnodeQueryThreads", tsNumOfVnodeQueryThreads, 1, 1024, 0) != 0) return -1;
 
-  tsNumOfVnodeFetchThreads = tsNumOfCores / 2;
-  tsNumOfVnodeFetchThreads = TRANGE(tsNumOfVnodeFetchThreads, 2, 4);
+  tsNumOfVnodeFetchThreads = TRANGE(tsNumOfVnodeFetchThreads, 1, 1);
   if (cfgAddInt32(pCfg, "numOfVnodeFetchThreads", tsNumOfVnodeFetchThreads, 1, 1024, 0) != 0) return -1;
 
   tsNumOfVnodeWriteThreads = tsNumOfCores;
@@ -438,8 +437,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   tsNumOfQnodeQueryThreads = TMAX(tsNumOfQnodeQueryThreads, 1);
   if (cfgAddInt32(pCfg, "numOfQnodeQueryThreads", tsNumOfQnodeQueryThreads, 1, 1024, 0) != 0) return -1;
 
-  tsNumOfQnodeFetchThreads = tsNumOfCores / 2;
-  tsNumOfQnodeFetchThreads = TRANGE(tsNumOfQnodeFetchThreads, 2, 4);
+  tsNumOfQnodeFetchThreads = TRANGE(tsNumOfQnodeFetchThreads, 1, 1);
   if (cfgAddInt32(pCfg, "numOfQnodeFetchThreads", tsNumOfQnodeFetchThreads, 1, 1024, 0) != 0) return -1;
 
   tsNumOfSnodeSharedThreads = tsNumOfCores / 4;
diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index df4b9b6ea6c9b30b83b0bb1c25ab9d86a82fa487..7c90c3538cc3428d6c6456c8c67f9acb4818e82c 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -59,6 +59,7 @@ enum {
   CTG_OP_UPDATE_VG_EPSET,
   CTG_OP_UPDATE_TB_INDEX,
   CTG_OP_DROP_TB_INDEX,
+  CTG_OP_CLEAR_CACHE,
   CTG_OP_MAX
 };
 
@@ -328,6 +329,10 @@ typedef struct SCtgDropTbIndexMsg {
   char         tbName[TSDB_TABLE_NAME_LEN];
 } SCtgDropTbIndexMsg;
 
+typedef struct SCtgClearCacheMsg {
+  SCatalog*    pCtg;
+} SCtgClearCacheMsg;
+
 typedef struct SCtgUpdateEpsetMsg {
   SCatalog* pCtg;
   char  dbFName[TSDB_DB_FNAME_LEN];
@@ -471,8 +476,8 @@ typedef struct SCtgOperation {
 #define CTG_API_LEAVE(c) do { int32_t __code = c; CTG_UNLOCK(CTG_READ, &gCtgMgmt.lock); CTG_API_DEBUG("CTG API leave %s", __FUNCTION__); CTG_RET(__code); } while (0)
 #define CTG_API_ENTER() do { CTG_API_DEBUG("CTG API enter %s", __FUNCTION__); CTG_LOCK(CTG_READ, &gCtgMgmt.lock); if (atomic_load_8((int8_t*)&gCtgMgmt.exit)) { CTG_API_LEAVE(TSDB_CODE_CTG_OUT_OF_SERVICE); }  } while (0)
 
-void ctgdShowTableMeta(SCatalog* pCtg, const char *tbName, STableMeta* p);
-void ctgdShowClusterCache(SCatalog* pCtg);
+void    ctgdShowTableMeta(SCatalog* pCtg, const char *tbName, STableMeta* p);
+void    ctgdShowClusterCache(SCatalog* pCtg);
 int32_t ctgdShowCacheInfo(void);
 
 int32_t ctgRemoveTbMetaFromCache(SCatalog* pCtg, SName* pTableName, bool syncReq);
@@ -487,8 +492,8 @@ int32_t ctgOpDropTbMeta(SCtgCacheOperation *action);
 int32_t ctgOpUpdateUser(SCtgCacheOperation *action);
 int32_t ctgOpUpdateEpset(SCtgCacheOperation *operation);
 int32_t ctgAcquireVgInfoFromCache(SCatalog* pCtg, const char *dbFName, SCtgDBCache **pCache);
-void ctgReleaseDBCache(SCatalog *pCtg, SCtgDBCache *dbCache);
-void ctgRUnlockVgInfo(SCtgDBCache *dbCache);
+void    ctgReleaseDBCache(SCatalog *pCtg, SCtgDBCache *dbCache);
+void    ctgRUnlockVgInfo(SCtgDBCache *dbCache);
 int32_t ctgTbMetaExistInCache(SCatalog* pCtg, char *dbFName, char* tbName, int32_t *exist);
 int32_t ctgReadTbMetaFromCache(SCatalog* pCtg, SCtgTbMetaCtx* ctx, STableMeta** pTableMeta);
 int32_t ctgReadTbVerFromCache(SCatalog *pCtg, SName *pTableName, int32_t *sver, int32_t *tver, int32_t *tbType, uint64_t *suid, char *stbName);
@@ -502,17 +507,20 @@ int32_t ctgUpdateTbMetaEnqueue(SCatalog* pCtg, STableMetaOutput *output, bool sy
 int32_t ctgUpdateUserEnqueue(SCatalog* pCtg, SGetUserAuthRsp *pAuth, bool syncReq);
 int32_t ctgUpdateVgEpsetEnqueue(SCatalog* pCtg, char *dbFName, int32_t vgId, SEpSet* pEpSet);
 int32_t ctgUpdateTbIndexEnqueue(SCatalog* pCtg, STableIndex **pIndex, bool syncOp);
+int32_t ctgClearCacheEnqueue(SCatalog* pCtg, bool syncOp);
 int32_t ctgMetaRentInit(SCtgRentMgmt *mgmt, uint32_t rentSec, int8_t type);
 int32_t ctgMetaRentAdd(SCtgRentMgmt *mgmt, void *meta, int64_t id, int32_t size);
 int32_t ctgMetaRentGet(SCtgRentMgmt *mgmt, void **res, uint32_t *num, int32_t size);
 int32_t ctgUpdateTbMetaToCache(SCatalog* pCtg, STableMetaOutput* pOut, bool syncReq);
 int32_t ctgStartUpdateThread();
 int32_t ctgRelaunchGetTbMetaTask(SCtgTask *pTask);
-void ctgReleaseVgInfoToCache(SCatalog* pCtg, SCtgDBCache *dbCache);
+void    ctgReleaseVgInfoToCache(SCatalog* pCtg, SCtgDBCache *dbCache);
 int32_t ctgReadTbIndexFromCache(SCatalog* pCtg, SName* pTableName, SArray** pRes);
 int32_t ctgDropTbIndexEnqueue(SCatalog* pCtg, SName* pName, bool syncOp);
 int32_t ctgOpDropTbIndex(SCtgCacheOperation *operation);
 int32_t ctgOpUpdateTbIndex(SCtgCacheOperation *operation);
+int32_t ctgOpClearCache(SCtgCacheOperation *operation);
+
 
 
 
@@ -535,22 +543,22 @@ int32_t ctgMakeAsyncRes(SCtgJob *pJob);
 int32_t ctgCloneVgInfo(SDBVgInfo *src, SDBVgInfo **dst);
 int32_t ctgCloneMetaOutput(STableMetaOutput *output, STableMetaOutput **pOutput);
 int32_t ctgGenerateVgList(SCatalog *pCtg, SHashObj *vgHash, SArray** pList);
-void ctgFreeJob(void* job);
-void ctgFreeHandle(SCatalog* pCtg);
-void ctgFreeVgInfo(SDBVgInfo *vgInfo);
+void    ctgFreeJob(void* job);
+void    ctgFreeHandle(SCatalog* pCtg);
+void    ctgFreeVgInfo(SDBVgInfo *vgInfo);
 int32_t ctgGetVgInfoFromHashValue(SCatalog *pCtg, SDBVgInfo *dbInfo, const SName *pTableName, SVgroupInfo *pVgroup);
-void ctgResetTbMetaTask(SCtgTask* pTask);
-void ctgFreeDbCache(SCtgDBCache *dbCache);
+void    ctgResetTbMetaTask(SCtgTask* pTask);
+void    ctgFreeDbCache(SCtgDBCache *dbCache);
 int32_t ctgStbVersionSortCompare(const void* key1, const void* key2);
 int32_t ctgDbVgVersionSortCompare(const void* key1, const void* key2);
 int32_t ctgStbVersionSearchCompare(const void* key1, const void* key2);
 int32_t ctgDbVgVersionSearchCompare(const void* key1, const void* key2);
-void ctgFreeSTableMetaOutput(STableMetaOutput* pOutput);
+void    ctgFreeSTableMetaOutput(STableMetaOutput* pOutput);
 int32_t ctgUpdateMsgCtx(SCtgMsgCtx* pCtx, int32_t reqType, void* out, char* target);
-char *ctgTaskTypeStr(CTG_TASK_TYPE type);
+char *  ctgTaskTypeStr(CTG_TASK_TYPE type);
 int32_t ctgUpdateSendTargetInfo(SMsgSendInfo *pMsgSendInfo, int32_t msgType, SCtgTask* pTask);
 int32_t ctgCloneTableIndex(SArray* pIndex, SArray** pRes);
-void ctgFreeSTableIndex(void *info);
+void    ctgFreeSTableIndex(void *info);
 
 
 extern SCatalogMgmt gCtgMgmt;
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index a3576f8738a13715430b4629fe68194511106dbc..bb02895569c180ea442992f60818e541a842eb8d 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -105,7 +105,7 @@ int32_t ctgRefreshDBVgInfo(SCatalog* pCtg, SRequestConnInfo *pConn, const char*
   code = ctgGetDBVgInfoFromMnode(pCtg, pConn, &input, &DbOut, NULL);
   if (code) {
     if (CTG_DB_NOT_EXIST(code) && (NULL != dbCache)) {
-      ctgDebug("db no longer exist, dbFName:%s, dbId:%" PRIx64, input.db, input.dbId);
+      ctgDebug("db no longer exist, dbFName:%s, dbId:0x%" PRIx64, input.db, input.dbId);
       ctgDropDbCacheEnqueue(pCtg, input.db, input.dbId);
     }
 
@@ -571,7 +571,7 @@ int32_t catalogGetHandle(uint64_t clusterId, SCatalog** catalogHandle) {
   }
 
   if (NULL == gCtgMgmt.pCluster) {
-    qError("catalog cluster cache are not ready, clusterId:%" PRIx64, clusterId);
+    qError("catalog cluster cache are not ready, clusterId:0x%" PRIx64, clusterId);
     CTG_ERR_RET(TSDB_CODE_CTG_NOT_READY);
   }
 
@@ -583,7 +583,7 @@ int32_t catalogGetHandle(uint64_t clusterId, SCatalog** catalogHandle) {
 
     if (ctg && (*ctg)) {
       *catalogHandle = *ctg;
-      qDebug("got catalog handle from cache, clusterId:%" PRIx64 ", CTG:%p", clusterId, *ctg);
+      qDebug("got catalog handle from cache, clusterId:0x%" PRIx64 ", CTG:%p", clusterId, *ctg);
       return TSDB_CODE_SUCCESS;
     }
 
@@ -612,11 +612,11 @@ int32_t catalogGetHandle(uint64_t clusterId, SCatalog** catalogHandle) {
         continue;
       }
 
-      qError("taosHashPut CTG to cache failed, clusterId:%" PRIx64, clusterId);
+      qError("taosHashPut CTG to cache failed, clusterId:0x%" PRIx64, clusterId);
       CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
     }
 
-    qDebug("add CTG to cache, clusterId:%" PRIx64 ", CTG:%p", clusterId, clusterCtg);
+    qDebug("add CTG to cache, clusterId:0x%" PRIx64 ", CTG:%p", clusterId, clusterCtg);
 
     break;
   }
@@ -640,7 +640,7 @@ void catalogFreeHandle(SCatalog* pCtg) {
   }
 
   if (taosHashRemove(gCtgMgmt.pCluster, &pCtg->clusterId, sizeof(pCtg->clusterId))) {
-    ctgWarn("taosHashRemove from cluster failed, may already be freed, clusterId:%" PRIx64, pCtg->clusterId);
+    ctgWarn("taosHashRemove from cluster failed, may already be freed, clusterId:0x%" PRIx64, pCtg->clusterId);
     return;
   }
 
@@ -650,7 +650,7 @@ void catalogFreeHandle(SCatalog* pCtg) {
 
   ctgFreeHandle(pCtg);
 
-  ctgInfo("handle freed, culsterId:%" PRIx64, clusterId);
+  ctgInfo("handle freed, culsterId:0x%" PRIx64, clusterId);
 }
 
 int32_t catalogGetDBVgVersion(SCatalog* pCtg, const char* dbFName, int32_t* version, int64_t* dbId, int32_t* tableNum) {
@@ -1247,6 +1247,23 @@ int32_t catalogUpdateUserAuthInfo(SCatalog* pCtg, SGetUserAuthRsp* pAuth) {
   CTG_API_LEAVE(ctgUpdateUserEnqueue(pCtg, pAuth, false));
 }
 
+int32_t catalogClearCache(void) {
+  CTG_API_ENTER();
+
+  qInfo("start to clear catalog cache");
+
+  if (NULL == gCtgMgmt.pCluster || atomic_load_8((int8_t*)&gCtgMgmt.exit)) {
+    CTG_API_LEAVE(TSDB_CODE_SUCCESS);
+  }
+
+  int32_t code = ctgClearCacheEnqueue(NULL, true);
+
+  qInfo("clear catalog cache end, code: %s", tstrerror(code));
+  
+  CTG_API_LEAVE(code);
+}
+
+
 void catalogDestroy(void) {
   qInfo("start to destroy catalog");
 
diff --git a/source/libs/catalog/src/ctgAsync.c b/source/libs/catalog/src/ctgAsync.c
index 8dabd56934677917e11f0ccf2c97c7490087f7d7..6adadf50455950e5d49bf0a5a9e178673c6fcf6b 100644
--- a/source/libs/catalog/src/ctgAsync.c
+++ b/source/libs/catalog/src/ctgAsync.c
@@ -622,7 +622,7 @@ int32_t ctgHandleTaskEnd(SCtgTask* pTask, int32_t rspCode) {
   SCtgJob* pJob = pTask->pJob;
   int32_t code = 0;
 
-  qDebug("QID:0x%" PRIx64 " task %d end with rsp %s", pJob->queryId, pTask->taskId, tstrerror(rspCode));
+  qDebug("QID:0x%" PRIx64 " task %d end with res %s", pJob->queryId, pTask->taskId, tstrerror(rspCode));
 
   pTask->code = rspCode;
 
@@ -1276,7 +1276,7 @@ int32_t ctgLaunchJob(SCtgJob *pJob) {
   for (int32_t i = 0; i < taskNum; ++i) {
     SCtgTask *pTask = taosArrayGet(pJob->pTasks, i);
 
-    qDebug("QID:0x%" PRIx64 " start to launch task %d", pJob->queryId, pTask->taskId);
+    qDebug("QID:0x%" PRIx64 " ctg start to launch task %d", pJob->queryId, pTask->taskId);
     CTG_ERR_RET((*gCtgAsyncFps[pTask->type].launchFp)(pTask));
   }
 
diff --git a/source/libs/catalog/src/ctgCache.c b/source/libs/catalog/src/ctgCache.c
index 9b4a774d8bfd97c0d05001381390acdd8985598f..c70a5b1769c857ffe1a115120eaac05c8252085d 100644
--- a/source/libs/catalog/src/ctgCache.c
+++ b/source/libs/catalog/src/ctgCache.c
@@ -69,6 +69,11 @@ SCtgOperation gCtgCacheOperation[CTG_OP_MAX] = {
     CTG_OP_DROP_TB_INDEX,
     "drop tbIndex",
     ctgOpDropTbIndex
+  },
+  {
+    CTG_OP_CLEAR_CACHE,
+    "clear cache",
+    ctgOpClearCache
   }  
 };
 
@@ -81,7 +86,7 @@ int32_t ctgRLockVgInfo(SCatalog *pCtg, SCtgDBCache *dbCache, bool *inCache) {
   if (dbCache->deleted) {
     CTG_UNLOCK(CTG_READ, &dbCache->vgCache.vgLock);
 
-    ctgDebug("db is dropping, dbId:%"PRIx64, dbCache->dbId);
+    ctgDebug("db is dropping, dbId:0x%"PRIx64, dbCache->dbId);
     
     *inCache = false;
     return TSDB_CODE_SUCCESS;
@@ -92,7 +97,7 @@ int32_t ctgRLockVgInfo(SCatalog *pCtg, SCtgDBCache *dbCache, bool *inCache) {
     CTG_UNLOCK(CTG_READ, &dbCache->vgCache.vgLock);
 
     *inCache = false;
-    ctgDebug("db vgInfo is empty, dbId:%"PRIx64, dbCache->dbId);
+    ctgDebug("db vgInfo is empty, dbId:0x%"PRIx64, dbCache->dbId);
     return TSDB_CODE_SUCCESS;
   }
 
@@ -105,7 +110,7 @@ int32_t ctgWLockVgInfo(SCatalog *pCtg, SCtgDBCache *dbCache) {
   CTG_LOCK(CTG_WRITE, &dbCache->vgCache.vgLock);
 
   if (dbCache->deleted) {
-    ctgDebug("db is dropping, dbId:%"PRIx64, dbCache->dbId);
+    ctgDebug("db is dropping, dbId:0x%"PRIx64, dbCache->dbId);
     CTG_UNLOCK(CTG_WRITE, &dbCache->vgCache.vgLock);
     CTG_ERR_RET(TSDB_CODE_CTG_DB_DROPPED);
   }
@@ -280,27 +285,27 @@ int32_t ctgAcquireStbMetaFromCache(SCatalog* pCtg, char *dbFName, uint64_t suid,
   int32_t sz = 0;
   char* stName = taosHashAcquire(dbCache->stbCache, &suid, sizeof(suid));
   if (NULL == stName) {
-    ctgDebug("stb %" PRIx64 " not in cache, dbFName:%s", suid, dbFName);
+    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 %" PRIx64 " name %s not in cache, dbFName:%s", suid, stName, dbFName);
+    ctgDebug("stb 0x%" PRIx64 " name %s not in cache, dbFName:%s", suid, stName, dbFName);
     taosHashRelease(dbCache->stbCache, stName);
     goto _return;
   }
 
   CTG_LOCK(CTG_READ, &pCache->metaLock);
   if (NULL == pCache->pMeta) {
-    ctgDebug("stb %" PRIx64 " meta not in cache, dbFName:%s", suid, dbFName);
+    ctgDebug("stb 0x%" PRIx64 " meta not in cache, dbFName:%s", suid, dbFName);
     goto _return;
   }
 
   *pDb = dbCache;
   *pTb = pCache;
 
-  ctgDebug("stb %" PRIx64 " meta got in cache, dbFName:%s", suid, dbFName);
+  ctgDebug("stb 0x%" PRIx64 " meta got in cache, dbFName:%s", suid, dbFName);
   
   CTG_CACHE_STAT_INC(tbMetaHitNum, 1);
 
@@ -434,14 +439,14 @@ int32_t ctgReadTbMetaFromCache(SCatalog* pCtg, SCtgTbMetaCtx* ctx, STableMeta**
   if (NULL == tbCache) {
     ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
     taosMemoryFreeClear(*pTableMeta);
-    ctgDebug("stb %" PRIx64 " meta not in cache", ctx->tbInfo.suid);
+    ctgDebug("stb 0x%" PRIx64 " meta not in cache", ctx->tbInfo.suid);
     return TSDB_CODE_SUCCESS;
   }
   
   STableMeta* stbMeta = tbCache->pMeta;
   if (stbMeta->suid != ctx->tbInfo.suid) {    
     ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
-    ctgError("stb suid %" PRIx64 " in stbCache mis-match, expected suid:%"PRIx64 , stbMeta->suid, ctx->tbInfo.suid);
+    ctgError("stb suid 0x%" PRIx64 " in stbCache mis-match, expected suid 0x%"PRIx64 , stbMeta->suid, ctx->tbInfo.suid);
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -492,7 +497,7 @@ int32_t ctgReadTbVerFromCache(SCatalog *pCtg, SName *pTableName, int32_t *sver,
     *sver = tbMeta->sversion;
     *tver = tbMeta->tversion;
 
-    ctgDebug("Got tb %s ver from cache, dbFName:%s, tbType:%d, sver:%d, tver:%d, suid:%" PRIx64, 
+    ctgDebug("Got tb %s ver from cache, dbFName:%s, tbType:%d, sver:%d, tver:%d, suid:0x%" PRIx64, 
              pTableName->tname, dbFName, *tbType, *sver, *tver, *suid);
 
     ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
@@ -507,14 +512,14 @@ int32_t ctgReadTbVerFromCache(SCatalog *pCtg, SName *pTableName, int32_t *sver,
   ctgAcquireStbMetaFromCache(pCtg, dbFName, *suid, &dbCache, &tbCache);
   if (NULL == tbCache) {
     ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
-    ctgDebug("stb %" PRIx64 " meta not in cache", *suid);
+    ctgDebug("stb 0x%" PRIx64 " meta not in cache", *suid);
     return TSDB_CODE_SUCCESS;
   }
   
   STableMeta* stbMeta = tbCache->pMeta;
   if (stbMeta->suid != *suid) {
     ctgReleaseTbMetaToCache(pCtg, dbCache, tbCache);
-    ctgError("stb suid %" PRIx64 " in stbCache mis-match, expected suid:%" PRIx64 , stbMeta->suid, *suid);
+    ctgError("stb suid 0x%" PRIx64 " in stbCache mis-match, expected suid:0x%" PRIx64 , stbMeta->suid, *suid);
     CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -990,6 +995,33 @@ _return:
 }
 
 
+int32_t ctgClearCacheEnqueue(SCatalog* pCtg, bool syncOp) {
+  int32_t code = 0;
+  SCtgCacheOperation *op = taosMemoryCalloc(1, sizeof(SCtgCacheOperation));
+  op->opId = CTG_OP_CLEAR_CACHE;
+  op->syncOp = syncOp;
+  
+  SCtgClearCacheMsg *msg = taosMemoryMalloc(sizeof(SCtgClearCacheMsg));
+  if (NULL == msg) {
+    ctgError("malloc %d failed", (int32_t)sizeof(SCtgClearCacheMsg));
+    CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+  }
+
+  msg->pCtg = pCtg;
+  op->data = msg;
+
+  CTG_ERR_JRET(ctgEnqueue(pCtg, op));
+  
+  return TSDB_CODE_SUCCESS;
+  
+_return:
+
+  taosMemoryFreeClear(msg);
+  
+  CTG_RET(code);
+}
+
+
 int32_t ctgMetaRentInit(SCtgRentMgmt *mgmt, uint32_t rentSec, int8_t type) {
   mgmt->slotRIdx = 0;
   mgmt->slotNum = rentSec / CTG_RENT_SLOT_SECOND;
@@ -1019,19 +1051,19 @@ int32_t ctgMetaRentAdd(SCtgRentMgmt *mgmt, void *meta, int64_t id, int32_t size)
   if (NULL == slot->meta) {
     slot->meta = taosArrayInit(CTG_DEFAULT_RENT_SLOT_SIZE, size);
     if (NULL == slot->meta) {
-      qError("taosArrayInit %d failed, id:%"PRIx64", slot idx:%d, type:%d", CTG_DEFAULT_RENT_SLOT_SIZE, id, widx, mgmt->type);
+      qError("taosArrayInit %d failed, id:0x%"PRIx64", slot idx:%d, type:%d", CTG_DEFAULT_RENT_SLOT_SIZE, id, widx, mgmt->type);
       CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
     }
   }
 
   if (NULL == taosArrayPush(slot->meta, meta)) {
-    qError("taosArrayPush meta to rent failed, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+    qError("taosArrayPush meta to rent failed, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
     CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
   slot->needSort = true;
 
-  qDebug("add meta to rent, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+  qDebug("add meta to rent, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
 
 _return:
 
@@ -1047,7 +1079,7 @@ int32_t ctgMetaRentUpdate(SCtgRentMgmt *mgmt, void *meta, int64_t id, int32_t si
 
   CTG_LOCK(CTG_WRITE, &slot->lock);
   if (NULL == slot->meta) {
-    qError("empty meta slot, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+    qError("empty meta slot, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -1060,20 +1092,20 @@ int32_t ctgMetaRentUpdate(SCtgRentMgmt *mgmt, void *meta, int64_t id, int32_t si
 
   void *orig = taosArraySearch(slot->meta, &id, searchCompare, TD_EQ);
   if (NULL == orig) {
-    qDebug("meta not found in slot, id:%"PRIx64", slot idx:%d, type:%d, size:%d", id, widx, mgmt->type, (int32_t)taosArrayGetSize(slot->meta));
+    qDebug("meta not found in slot, id:0x%"PRIx64", slot idx:%d, type:%d, size:%d", id, widx, mgmt->type, (int32_t)taosArrayGetSize(slot->meta));
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
   memcpy(orig, meta, size);
 
-  qDebug("meta in rent updated, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+  qDebug("meta in rent updated, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
 
 _return:
 
   CTG_UNLOCK(CTG_WRITE, &slot->lock);
 
   if (code) {
-    qDebug("meta in rent update failed, will try to add it, code:%x, id:%"PRIx64", slot idx:%d, type:%d", code, id, widx, mgmt->type);
+    qDebug("meta in rent update failed, will try to add it, code:%x, id:0x%"PRIx64", slot idx:%d, type:%d", code, id, widx, mgmt->type);
     CTG_RET(ctgMetaRentAdd(mgmt, meta, id, size));
   }
 
@@ -1088,7 +1120,7 @@ int32_t ctgMetaRentRemove(SCtgRentMgmt *mgmt, int64_t id, __compar_fn_t sortComp
   
   CTG_LOCK(CTG_WRITE, &slot->lock);
   if (NULL == slot->meta) {
-    qError("empty meta slot, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+    qError("empty meta slot, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -1100,13 +1132,13 @@ int32_t ctgMetaRentRemove(SCtgRentMgmt *mgmt, int64_t id, __compar_fn_t sortComp
 
   int32_t idx = taosArraySearchIdx(slot->meta, &id, searchCompare, TD_EQ);
   if (idx < 0) {
-    qError("meta not found in slot, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+    qError("meta not found in slot, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
   taosArrayRemove(slot->meta, idx);
 
-  qDebug("meta in rent removed, id:%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
+  qDebug("meta in rent removed, id:0x%"PRIx64", slot idx:%d, type:%d", id, widx, mgmt->type);
 
 _return:
 
@@ -1219,11 +1251,11 @@ int32_t ctgAddNewDBCache(SCatalog *pCtg, const char *dbFName, uint64_t dbId) {
   SDbVgVersion vgVersion = {.dbId = newDBCache.dbId, .vgVersion = -1};
   strncpy(vgVersion.dbFName, dbFName, sizeof(vgVersion.dbFName));
 
-  ctgDebug("db added to cache, dbFName:%s, dbId:%"PRIx64, dbFName, dbId);
+  ctgDebug("db added to cache, dbFName:%s, dbId:0x%"PRIx64, dbFName, dbId);
 
   CTG_ERR_RET(ctgMetaRentAdd(&pCtg->dbRent, &vgVersion, dbId, sizeof(SDbVgVersion)));
 
-  ctgDebug("db added to rent, dbFName:%s, vgVersion:%d, dbId:%"PRIx64, dbFName, vgVersion.vgVersion, dbId);
+  ctgDebug("db added to rent, dbFName:%s, vgVersion:%d, dbId:0x%"PRIx64, dbFName, vgVersion.vgVersion, dbId);
 
   return TSDB_CODE_SUCCESS;
 
@@ -1246,7 +1278,7 @@ void ctgRemoveStbRent(SCatalog* pCtg, SCtgDBCache *dbCache) {
     suid = taosHashGetKey(pIter, NULL);
 
     if (TSDB_CODE_SUCCESS == ctgMetaRentRemove(&pCtg->stbRent, *suid, ctgStbVersionSortCompare, ctgStbVersionSearchCompare)) {
-      ctgDebug("stb removed from rent, suid:%"PRIx64, *suid);
+      ctgDebug("stb removed from rent, suid:0x%"PRIx64, *suid);
     }
         
     pIter = taosHashIterate(dbCache->stbCache, pIter);
@@ -1257,7 +1289,7 @@ void ctgRemoveStbRent(SCatalog* pCtg, SCtgDBCache *dbCache) {
 int32_t ctgRemoveDBFromCache(SCatalog* pCtg, SCtgDBCache *dbCache, const char* dbFName) {
   uint64_t dbId = dbCache->dbId;
   
-  ctgInfo("start to remove db from cache, dbFName:%s, dbId:%"PRIx64, dbFName, dbCache->dbId);
+  ctgInfo("start to remove db from cache, dbFName:%s, dbId:0x%"PRIx64, dbFName, dbCache->dbId);
 
   CTG_LOCK(CTG_WRITE, &dbCache->dbLock);
 
@@ -1268,7 +1300,7 @@ int32_t ctgRemoveDBFromCache(SCatalog* pCtg, SCtgDBCache *dbCache, const char* d
   CTG_UNLOCK(CTG_WRITE, &dbCache->dbLock);
 
   CTG_ERR_RET(ctgMetaRentRemove(&pCtg->dbRent, dbId, ctgDbVgVersionSortCompare, ctgDbVgVersionSearchCompare));
-  ctgDebug("db removed from rent, dbFName:%s, dbId:%"PRIx64, dbFName, dbId);
+  ctgDebug("db removed from rent, dbFName:%s, dbId:0x%"PRIx64, dbFName, dbId);
 
   if (taosHashRemove(pCtg->dbCache, dbFName, strlen(dbFName))) {
     ctgInfo("taosHashRemove from dbCache failed, may be removed, dbFName:%s", dbFName);
@@ -1276,7 +1308,7 @@ int32_t ctgRemoveDBFromCache(SCatalog* pCtg, SCtgDBCache *dbCache, const char* d
   }
 
   CTG_CACHE_STAT_DEC(dbNum, 1);
-  ctgInfo("db removed from cache, dbFName:%s, dbId:%"PRIx64, dbFName, dbId);
+  ctgInfo("db removed from cache, dbFName:%s, dbId:0x%"PRIx64, dbFName, dbId);
   
   return TSDB_CODE_SUCCESS;
 }
@@ -1339,7 +1371,7 @@ int32_t ctgUpdateRentStbVersion(SCatalog *pCtg, char* dbFName, char* tbName, uin
   
   CTG_ERR_RET(ctgMetaRentUpdate(&pCtg->stbRent, &metaRent, metaRent.suid, sizeof(SSTableVersion), ctgStbVersionSortCompare, ctgStbVersionSearchCompare));
 
-  ctgDebug("db %s,%" PRIx64 " stb %s,%" PRIx64 " sver %d tver %d smaVer %d updated to stbRent", 
+  ctgDebug("db %s,0x%" PRIx64 " stb %s,0x%" PRIx64 " sver %d tver %d smaVer %d updated to stbRent", 
            dbFName, dbId, tbName, suid, metaRent.sversion, metaRent.tversion, metaRent.smaVer);
 
   return TSDB_CODE_SUCCESS;         
@@ -1349,7 +1381,7 @@ int32_t ctgUpdateRentStbVersion(SCatalog *pCtg, char* dbFName, char* tbName, uin
 int32_t ctgWriteTbMetaToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFName, uint64_t dbId, char *tbName, STableMeta *meta, int32_t metaSize) {
   if (NULL == dbCache->tbCache || NULL == dbCache->stbCache) {
     taosMemoryFree(meta);
-    ctgError("db is dropping, dbId:%"PRIx64, dbCache->dbId);
+    ctgError("db is dropping, dbId:0x%"PRIx64, dbCache->dbId);
     CTG_ERR_RET(TSDB_CODE_CTG_DB_DROPPED);
   }
 
@@ -1370,10 +1402,10 @@ int32_t ctgWriteTbMetaToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFNam
     
     if (origType == TSDB_SUPER_TABLE) {
       if (taosHashRemove(dbCache->stbCache, &orig->suid, sizeof(orig->suid))) {
-        ctgError("stb not exist in stbCache, dbFName:%s, stb:%s, suid:%"PRIx64, dbFName, tbName, orig->suid);
+        ctgError("stb not exist in stbCache, dbFName:%s, stb:%s, suid:0x%"PRIx64, dbFName, tbName, orig->suid);
       } else {
         CTG_CACHE_STAT_DEC(stblNum, 1);
-        ctgDebug("stb removed from stbCache, dbFName:%s, stb:%s, suid:%"PRIx64, dbFName, tbName, orig->suid);
+        ctgDebug("stb removed from stbCache, dbFName:%s, stb:%s, suid:0x%"PRIx64, dbFName, tbName, orig->suid);
       }
       
       origSuid = orig->suid;
@@ -1407,13 +1439,13 @@ int32_t ctgWriteTbMetaToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFNam
   }
 
   if (origSuid != meta->suid && taosHashPut(dbCache->stbCache, &meta->suid, sizeof(meta->suid), tbName, strlen(tbName) + 1) != 0) {
-    ctgError("taosHashPut to stable cache failed, suid:%"PRIx64, meta->suid);
+    ctgError("taosHashPut to stable cache failed, suid:0x%"PRIx64, meta->suid);
     CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
   CTG_CACHE_STAT_INC(stblNum, 1);
 
-  ctgDebug("stb %" PRIx64 " updated to cache, dbFName:%s, tbName:%s, tbType:%d", meta->suid, dbFName, tbName, meta->tableType);
+  ctgDebug("stb 0x%" PRIx64 " updated to cache, dbFName:%s, tbName:%s, tbType:%d", meta->suid, dbFName, tbName, meta->tableType);
 
   CTG_ERR_RET(ctgUpdateRentStbVersion(pCtg, dbFName, tbName, dbId, meta->suid, pCache));
   
@@ -1424,7 +1456,7 @@ int32_t ctgWriteTbIndexToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char* dbFNa
   if (NULL == dbCache->tbCache) {
     ctgFreeSTableIndex(*index);
     taosMemoryFreeClear(*index);
-    ctgError("db is dropping, dbId:%"PRIx64, dbCache->dbId);
+    ctgError("db is dropping, dbId:0x%"PRIx64, dbCache->dbId);
     CTG_ERR_RET(TSDB_CODE_CTG_DB_DROPPED);
   }
 
@@ -1510,7 +1542,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
   SCtgDBCache *dbCache = NULL;
   CTG_ERR_RET(ctgGetAddDBCache(msg->pCtg, dbFName, msg->dbId, &dbCache));
   if (NULL == dbCache) {
-    ctgInfo("conflict db update, ignore this update, dbFName:%s, dbId:%"PRIx64, dbFName, msg->dbId);
+    ctgInfo("conflict db update, ignore this update, dbFName:%s, dbId:0x%"PRIx64, dbFName, msg->dbId);
     CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -1540,7 +1572,7 @@ int32_t ctgOpUpdateVgroup(SCtgCacheOperation *operation) {
   vgCache->vgInfo = dbInfo;
   msg->dbInfo = NULL;
 
-  ctgDebug("db vgInfo updated, dbFName:%s, vgVer:%d, dbId:%"PRIx64, dbFName, vgVersion.vgVersion, vgVersion.dbId);
+  ctgDebug("db vgInfo updated, dbFName:%s, vgVer:%d, dbId:0x%"PRIx64, dbFName, vgVersion.vgVersion, vgVersion.dbId);
 
   ctgWUnlockVgInfo(dbCache);
 
@@ -1569,7 +1601,7 @@ int32_t ctgOpDropDbCache(SCtgCacheOperation *operation) {
   }
   
   if (dbCache->dbId != msg->dbId) {
-    ctgInfo("dbId already updated, dbFName:%s, dbId:%"PRIx64 ", targetId:%"PRIx64, msg->dbFName, dbCache->dbId, msg->dbId);
+    ctgInfo("dbId already updated, dbFName:%s, dbId:0x%"PRIx64 ", targetId:0x%"PRIx64, msg->dbFName, dbCache->dbId, msg->dbId);
     goto _return;
   }
   
@@ -1629,7 +1661,7 @@ int32_t ctgOpUpdateTbMeta(SCtgCacheOperation *operation) {
   
   CTG_ERR_JRET(ctgGetAddDBCache(pCtg, pMeta->dbFName, pMeta->dbId, &dbCache));
   if (NULL == dbCache) {
-    ctgInfo("conflict db update, ignore this update, dbFName:%s, dbId:%" PRIx64, pMeta->dbFName, pMeta->dbId);
+    ctgInfo("conflict db update, ignore this update, dbFName:%s, dbId:0x%" PRIx64, pMeta->dbFName, pMeta->dbId);
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
@@ -1673,27 +1705,28 @@ int32_t ctgOpDropStbMeta(SCtgCacheOperation *operation) {
   }
 
   if (msg->dbId && (dbCache->dbId != msg->dbId)) {
-    ctgDebug("dbId already modified, dbFName:%s, current:%"PRIx64", dbId:%"PRIx64", stb:%s, suid:%"PRIx64, msg->dbFName, dbCache->dbId, msg->dbId, msg->stbName, msg->suid);
+    ctgDebug("dbId already modified, dbFName:%s, current:0x%"PRIx64", dbId:0x%"PRIx64", stb:%s, suid:0x%"PRIx64, 
+             msg->dbFName, dbCache->dbId, msg->dbId, msg->stbName, msg->suid);
     return TSDB_CODE_SUCCESS;
   }
   
   if (taosHashRemove(dbCache->stbCache, &msg->suid, sizeof(msg->suid))) {
-    ctgDebug("stb not exist in stbCache, may be removed, dbFName:%s, stb:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
+    ctgDebug("stb not exist in stbCache, may be removed, dbFName:%s, stb:%s, suid:0x%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
   } else {
     CTG_CACHE_STAT_DEC(stblNum, 1);
   }
 
   if (taosHashRemove(dbCache->tbCache, msg->stbName, strlen(msg->stbName))) {  
-    ctgError("stb not exist in cache, dbFName:%s, stb:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
+    ctgError("stb not exist in cache, dbFName:%s, stb:%s, suid:0x%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
   } else {
     CTG_CACHE_STAT_DEC(tblNum, 1);
   }
   
-  ctgInfo("stb removed from cache, dbFName:%s, stbName:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
+  ctgInfo("stb removed from cache, dbFName:%s, stbName:%s, suid:0x%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
 
   CTG_ERR_JRET(ctgMetaRentRemove(&msg->pCtg->stbRent, msg->suid, ctgStbVersionSortCompare, ctgStbVersionSearchCompare));
   
-  ctgDebug("stb removed from rent, dbFName:%s, stbName:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
+  ctgDebug("stb removed from rent, dbFName:%s, stbName:%s, suid:0x%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
   
 _return:
 
@@ -1714,7 +1747,7 @@ int32_t ctgOpDropTbMeta(SCtgCacheOperation *operation) {
   }
 
   if (dbCache->dbId != msg->dbId) {
-    ctgDebug("dbId %" PRIx64 " not match with curId %"PRIx64", dbFName:%s, tbName:%s", msg->dbId, dbCache->dbId, msg->dbFName, msg->tbName);
+    ctgDebug("dbId 0x%" PRIx64 " not match with curId 0x%"PRIx64", dbFName:%s, tbName:%s", msg->dbId, dbCache->dbId, msg->dbFName, msg->tbName);
     return TSDB_CODE_SUCCESS;
   }
 
@@ -1898,6 +1931,37 @@ _return:
 }
 
 
+int32_t ctgOpClearCache(SCtgCacheOperation *operation) {
+  int32_t code = 0;
+  SCtgClearCacheMsg *msg = operation->data;
+  SCatalog* pCtg = msg->pCtg;
+
+  if (pCtg) {
+    catalogFreeHandle(pCtg);
+    goto _return;
+  }
+  
+  void* pIter = taosHashIterate(gCtgMgmt.pCluster, NULL);
+  while (pIter) {
+    pCtg = *(SCatalog**)pIter;
+
+    if (pCtg) {
+      catalogFreeHandle(pCtg);
+    }
+
+    pIter = taosHashIterate(gCtgMgmt.pCluster, pIter);
+  }
+
+  taosHashClear(gCtgMgmt.pCluster);
+
+_return:
+ 
+  taosMemoryFreeClear(msg);
+  
+  CTG_RET(code);
+}
+
+
 void ctgUpdateThreadUnexpectedStopped(void) {
   if (!atomic_load_8((int8_t*)&gCtgMgmt.exit) && CTG_IS_LOCKED(&gCtgMgmt.lock) > 0) CTG_UNLOCK(CTG_READ, &gCtgMgmt.lock);
 }
@@ -1969,6 +2033,7 @@ void* ctgUpdateThreadFunc(void* param) {
 
     CTG_RT_STAT_INC(qDoneNum, 1); 
 
+    ctgdShowCacheInfo();
     ctgdShowClusterCache(pCtg);
   }
 
diff --git a/source/libs/catalog/src/ctgDbg.c b/source/libs/catalog/src/ctgDbg.c
index ff93bedb213607c3592b057c12beb2ed2f733d54..7f2b919f175adfa79a5bc3916813c8b6619e1b3f 100644
--- a/source/libs/catalog/src/ctgDbg.c
+++ b/source/libs/catalog/src/ctgDbg.c
@@ -19,7 +19,7 @@
 #include "catalogInt.h"
 
 extern SCatalogMgmt gCtgMgmt;
-SCtgDebug gCTGDebug = {.lockEnable = true, .apiEnable = true};
+SCtgDebug gCTGDebug = {.cacheEnable = true};
 
 void ctgdUserCallback(SMetaData* pResult, void* param, int32_t code) {
   ASSERT(*(int32_t*)param == 1);
@@ -40,9 +40,9 @@ void ctgdUserCallback(SMetaData* pResult, void* param, int32_t code) {
       STableComInfo *c = &p->tableInfo;
       
       if (TSDB_CHILD_TABLE == p->tableType) {
-        qDebug("table meta: type:%d, vgId:%d, uid:%" PRIx64 ",suid:%" PRIx64, p->tableType, p->vgId, p->uid, p->suid);
+        qDebug("table meta: type:%d, vgId:%d, uid:0x%" PRIx64 ",suid:0x%" PRIx64, p->tableType, p->vgId, p->uid, p->suid);
       } else {
-        qDebug("table meta: type:%d, vgId:%d, uid:%" PRIx64 ",suid:%" PRIx64 ",sv:%d, tv:%d, tagNum:%d, precision:%d, colNum:%d, rowSize:%d",
+        qDebug("table meta: type:%d, vgId:%d, uid:0x%" PRIx64 ",suid:0x%" PRIx64 ",sv:%d, tv:%d, tagNum:%d, precision:%d, colNum:%d, rowSize:%d",
          p->tableType, p->vgId, p->uid, p->suid, p->sversion, p->tversion, c->numOfTags, c->precision, c->numOfColumns, c->rowSize);
       }
       
@@ -75,7 +75,7 @@ void ctgdUserCallback(SMetaData* pResult, void* param, int32_t code) {
     num = taosArrayGetSize(pResult->pDbInfo);
     for (int32_t i = 0; i < num; ++i) {
       SDbInfo *pDb = taosArrayGet(pResult->pDbInfo, i);
-      qDebug("db %d dbInfo: vgVer:%d, tbNum:%d, dbId:%" PRIx64, i, pDb->vgVer, pDb->tbNum, pDb->dbId);
+      qDebug("db %d dbInfo: vgVer:%d, tbNum:%d, dbId:0x%" PRIx64, i, pDb->vgVer, pDb->tbNum, pDb->dbId);
     }
   } else {
     qDebug("empty db info");
@@ -333,10 +333,10 @@ void ctgdShowTableMeta(SCatalog* pCtg, const char *tbName, STableMeta* p) {
   STableComInfo *c = &p->tableInfo;
 
   if (TSDB_CHILD_TABLE == p->tableType) {
-    ctgDebug("table [%s] meta: type:%d, vgId:%d, uid:%" PRIx64 ",suid:%" PRIx64, tbName, p->tableType, p->vgId, p->uid, p->suid);
+    ctgDebug("table [%s] meta: type:%d, vgId:%d, uid:0x%" PRIx64 ",suid:0x%" PRIx64, tbName, p->tableType, p->vgId, p->uid, p->suid);
     return;
   } else {
-    ctgDebug("table [%s] meta: type:%d, vgId:%d, uid:%" PRIx64 ",suid:%" PRIx64 ",sv:%d, tv:%d, tagNum:%d, precision:%d, colNum:%d, rowSize:%d",
+    ctgDebug("table [%s] meta: type:%d, vgId:%d, uid:0x%" PRIx64 ",suid:0x%" PRIx64 ",sv:%d, tv:%d, tagNum:%d, precision:%d, colNum:%d, rowSize:%d",
      tbName, p->tableType, p->vgId, p->uid, p->suid, p->sversion, p->tversion, c->numOfTags, c->precision, c->numOfColumns, c->rowSize);
   }
 
@@ -377,7 +377,7 @@ void ctgdShowDBCache(SCatalog* pCtg, SHashObj *dbHash) {
       }
     }
     
-    ctgDebug("[%d] db [%.*s][%"PRIx64"] %s: metaNum:%d, stbNum:%d, vgVersion:%d, hashMethod:%d, vgNum:%d",
+    ctgDebug("[%d] db [%.*s][0x%"PRIx64"] %s: metaNum:%d, stbNum:%d, vgVersion:%d, hashMethod:%d, vgNum:%d",
       i, (int32_t)len, dbFName, dbCache->dbId, dbCache->deleted?"deleted":"", metaNum, stbNum, vgVersion, hashMethod, vgNum);
 
     pIter = taosHashIterate(dbHash, pIter);
@@ -392,13 +392,13 @@ void ctgdShowClusterCache(SCatalog* pCtg) {
     return;
   }
 
-  ctgDebug("## cluster %"PRIx64" %p cache Info BEGIN ##", pCtg->clusterId, pCtg);
+  ctgDebug("## cluster 0x%"PRIx64" %p cache Info BEGIN ##", pCtg->clusterId, pCtg);
   ctgDebug("db:%d meta:%d stb:%d dbRent:%d stbRent:%d", ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM), ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM),
     ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_NUM), ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_RENT_NUM), ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM));    
   
   ctgdShowDBCache(pCtg, pCtg->dbCache);
 
-  ctgDebug("## cluster %"PRIx64" %p cache Info END ##", pCtg->clusterId, pCtg);
+  ctgDebug("## cluster 0x%"PRIx64" %p cache Info END ##", pCtg->clusterId, pCtg);
 }
 
 int32_t ctgdShowCacheInfo(void) {
@@ -407,6 +407,8 @@ int32_t ctgdShowCacheInfo(void) {
   }
 
   CTG_API_ENTER();
+
+  qDebug("# total catalog cluster number %d #", taosHashGetSize(gCtgMgmt.pCluster));
   
   SCatalog *pCtg = NULL;
   void *pIter = taosHashIterate(gCtgMgmt.pCluster, NULL);
diff --git a/source/libs/catalog/src/ctgRemote.c b/source/libs/catalog/src/ctgRemote.c
index 178025704f7e91045e8970844e0d5590baa5a052..fa1a26283286d01cc4574c4babbb28ad5fb36996 100644
--- a/source/libs/catalog/src/ctgRemote.c
+++ b/source/libs/catalog/src/ctgRemote.c
@@ -186,13 +186,13 @@ int32_t ctgHandleMsgCallback(void *param, const SDataBuf *pMsg, int32_t rspCode)
 
   SCtgJob* pJob = taosAcquireRef(gCtgMgmt.jobPool, cbParam->refId);
   if (NULL == pJob) {
-    qDebug("job refId %" PRIx64 " already dropped", cbParam->refId);
+    qDebug("ctg job refId 0x%" PRIx64 " already dropped", cbParam->refId);
     goto _return;
   }
 
   SCtgTask *pTask = taosArrayGet(pJob->pTasks, cbParam->taskId);
 
-  qDebug("QID:0x%" PRIx64 " task %d start to handle rsp %s", pJob->queryId, pTask->taskId, TMSG_INFO(cbParam->reqType + 1));
+  qDebug("QID:0x%" PRIx64 " ctg task %d start to handle rsp %s", pJob->queryId, pTask->taskId, TMSG_INFO(cbParam->reqType + 1));
   
   CTG_ERR_JRET((*gCtgAsyncFps[pTask->type].handleRspFp)(pTask, cbParam->reqType, pMsg, rspCode));
  
@@ -263,7 +263,7 @@ int32_t ctgAsyncSendMsg(SCatalog* pCtg, SRequestConnInfo *pConn, SCtgTask* pTask
     CTG_ERR_JRET(code);
   }
 
-  ctgDebug("req msg sent, reqId:0x%" PRIx64 ", msg type:%d, %s", pTask->pJob->queryId, msgType, TMSG_INFO(msgType));
+  ctgDebug("ctg req msg sent, reqId:0x%" PRIx64 ", msg type:%d, %s", pTask->pJob->queryId, msgType, TMSG_INFO(msgType));
   return TSDB_CODE_SUCCESS;
 
 _return:
diff --git a/source/libs/catalog/src/ctgUtil.c b/source/libs/catalog/src/ctgUtil.c
index e97c34dc268b61b402304aeb51689a99926484ec..476eb371b057e27a2420dd6b35582b58db8aca72 100644
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@@ -434,7 +434,7 @@ void ctgFreeJob(void* job) {
 
   taosMemoryFree(job);
 
-  qDebug("QID:%" PRIx64 ", job %" PRIx64 " freed", qid, rid);
+  qDebug("QID:0x%" PRIx64 ", ctg job 0x%" PRIx64 " freed", qid, rid);
 }
 
 int32_t ctgUpdateMsgCtx(SCtgMsgCtx* pCtx, int32_t reqType, void* out, char* target) {
diff --git a/source/libs/command/src/command.c b/source/libs/command/src/command.c
index f330b7ce162f9c79189a66c0772fffbc96cb8dcc..f06664b60b8f8a5c1daaf4ab495df24b5f77332b 100644
--- a/source/libs/command/src/command.c
+++ b/source/libs/command/src/command.c
@@ -14,6 +14,7 @@
  */
 
 #include "command.h"
+#include "catalog.h"
 #include "tdatablock.h"
 
 static int32_t getSchemaBytes(const SSchema* pSchema) {
@@ -120,8 +121,7 @@ static int32_t execDescribe(SNode* pStmt, SRetrieveTableRsp** pRsp) {
 }
 
 static int32_t execResetQueryCache() {
-  // todo
-  return TSDB_CODE_SUCCESS;
+  return catalogClearCache();
 }
 
 int32_t qExecCommand(SNode* pStmt, SRetrieveTableRsp** pRsp) {
diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index 451607e7d02e473ddeff651d04b0118f4b2c1baf..db05b70658396743ac6cd2e7e196ea478fe5a65e 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -614,6 +614,8 @@ int32_t qwProcessCQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
         QW_SET_EVENT_PROCESSED(ctx, QW_EVENT_FETCH);
 
         qwBuildAndSendFetchRsp(&qwMsg->connInfo, rsp, dataLen, code);
+        rsp = NULL;
+        
         QW_TASK_DLOG("fetch rsp send, handle:%p, code:%x - %s, dataLen:%d", qwMsg->connInfo.handle, code,
                      tstrerror(code), dataLen);
       } else {
@@ -633,7 +635,7 @@ int32_t qwProcessCQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
       rsp = NULL;
 
       qwMsg->connInfo = ctx->dataConnInfo;
-      qwBuildAndSendFetchRsp(&qwMsg->connInfo, rsp, 0, code);
+      qwBuildAndSendFetchRsp(&qwMsg->connInfo, NULL, 0, code);
       QW_TASK_DLOG("fetch rsp send, handle:%p, code:%x - %s, dataLen:%d", qwMsg->connInfo.handle, code, tstrerror(code),
                    0);
     }
diff --git a/source/libs/scheduler/src/schJob.c b/source/libs/scheduler/src/schJob.c
index f9c7b21cf25a2774cfa91ca697d801f900eb9e02..972ec4586cccb13c5401004690e79ec11101ea19 100644
--- a/source/libs/scheduler/src/schJob.c
+++ b/source/libs/scheduler/src/schJob.c
@@ -21,9 +21,9 @@
 #include "tref.h"
 #include "trpc.h"
 
-FORCE_INLINE SSchJob *schAcquireJob(int64_t refId) { qDebug("acquire jobId:0x%"PRIx64, refId); return (SSchJob *)taosAcquireRef(schMgmt.jobRef, refId); }
+FORCE_INLINE SSchJob *schAcquireJob(int64_t refId) { qDebug("sch acquire jobId:0x%"PRIx64, refId); return (SSchJob *)taosAcquireRef(schMgmt.jobRef, refId); }
 
-FORCE_INLINE int32_t schReleaseJob(int64_t refId) { qDebug("release jobId:0x%"PRIx64, refId); return taosReleaseRef(schMgmt.jobRef, refId); }
+FORCE_INLINE int32_t schReleaseJob(int64_t refId) { qDebug("sch release jobId:0x%"PRIx64, refId); return taosReleaseRef(schMgmt.jobRef, refId); }
 
 int32_t schInitTask(SSchJob *pJob, SSchTask *pTask, SSubplan *pPlan, SSchLevel *pLevel) {
   pTask->plan = pPlan;
@@ -47,7 +47,7 @@ int32_t schInitJob(SSchedulerReq *pReq, SSchJob **pSchJob, SQueryResult* pRes, b
   int64_t  refId = -1;
   SSchJob *pJob = taosMemoryCalloc(1, sizeof(SSchJob));
   if (NULL == pJob) {
-    qError("QID:%" PRIx64 " calloc %d failed", pReq->pDag->queryId, (int32_t)sizeof(SSchJob));
+    qError("QID:0x%" PRIx64 " calloc %d failed", pReq->pDag->queryId, (int32_t)sizeof(SSchJob));
     SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
   }
 
@@ -108,7 +108,7 @@ int32_t schInitJob(SSchedulerReq *pReq, SSchJob **pSchJob, SQueryResult* pRes, b
   atomic_add_fetch_32(&schMgmt.jobNum, 1);
 
   if (NULL == schAcquireJob(refId)) {
-    SCH_JOB_ELOG("schAcquireJob job failed, refId:%" PRIx64, refId);
+    SCH_JOB_ELOG("schAcquireJob job failed, refId:0x%" PRIx64, refId);
     SCH_ERR_JRET(TSDB_CODE_SCH_STATUS_ERROR);
   }
 
@@ -194,7 +194,7 @@ FORCE_INLINE bool schJobNeedToStop(SSchJob *pJob, int8_t *pStatus) {
     *pStatus = status;
   }
 
-  if (pJob->reqKilled) {
+  if (*pJob->reqKilled) {
     schUpdateJobStatus(pJob, JOB_TASK_STATUS_DROPPING);
     schUpdateJobErrCode(pJob, TSDB_CODE_TSC_QUERY_KILLED);
 
@@ -229,7 +229,7 @@ int32_t schUpdateJobStatus(SSchJob *pJob, int8_t newStatus) {
 
         break;
       case JOB_TASK_STATUS_NOT_START:
-        if (newStatus != JOB_TASK_STATUS_EXECUTING) {
+        if (newStatus != JOB_TASK_STATUS_EXECUTING && newStatus != JOB_TASK_STATUS_DROPPING) {
           SCH_ERR_JRET(TSDB_CODE_QRY_APP_ERROR);
         }
 
@@ -299,7 +299,7 @@ int32_t schBeginOperation(SSchJob *pJob, SCH_OP_TYPE type, bool sync) {
   int8_t status = 0;
   
   if (schJobNeedToStop(pJob, &status)) {
-    SCH_JOB_ELOG("job need to stop cause of status %s", jobTaskStatusStr(status));
+    SCH_JOB_ELOG("abort op %s cause of job need to stop", schGetOpStr(type));
     SCH_ERR_JRET(pJob->errCode);
   }
       
@@ -308,7 +308,7 @@ int32_t schBeginOperation(SSchJob *pJob, SCH_OP_TYPE type, bool sync) {
     SCH_ERR_JRET(TSDB_CODE_TSC_APP_ERROR);
   }
 
-  SCH_JOB_ELOG("job start %s operation", schGetOpStr(pJob->opStatus.op));
+  SCH_JOB_DLOG("job start %s operation", schGetOpStr(pJob->opStatus.op));
 
   pJob->opStatus.sync = sync;
 
@@ -377,7 +377,7 @@ int32_t schBuildTaskRalation(SSchJob *pJob, SHashObj *planToTask) {
           SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
         }
 
-        SCH_TASK_DLOG("children info, the %d child TID %" PRIx64, n, (*childTask)->taskId);
+        SCH_TASK_DLOG("children info, the %d child TID 0x%" PRIx64, n, (*childTask)->taskId);
       }
 
       if (parentNum > 0) {
@@ -411,7 +411,7 @@ int32_t schBuildTaskRalation(SSchJob *pJob, SHashObj *planToTask) {
           SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
         }
 
-        SCH_TASK_DLOG("parents info, the %d parent TID %" PRIx64, n, (*parentTask)->taskId);        
+        SCH_TASK_DLOG("parents info, the %d parent TID 0x%" PRIx64, n, (*parentTask)->taskId);        
       }
 
       SCH_TASK_DLOG("level:%d, parentNum:%d, childNum:%d", i, parentNum, childNum);
@@ -981,7 +981,9 @@ int32_t schProcessOnJobFailureImpl(SSchJob *pJob, int32_t status, int32_t errCod
   schUpdateJobErrCode(pJob, errCode);
   
   int32_t code = atomic_load_32(&pJob->errCode);
-  SCH_JOB_DLOG("job failed with error: %s", tstrerror(code));
+  if (code) {
+    SCH_JOB_DLOG("job failed with error: %s", tstrerror(code));
+  }
 
   schPostJobRes(pJob, 0);
 
@@ -1174,7 +1176,7 @@ int32_t schProcessOnTaskSuccess(SSchJob *pJob, SSchTask *pTask) {
     SCH_UNLOCK(SCH_WRITE, &parent->lock);
 
     if (SCH_TASK_READY_FOR_LAUNCH(readyNum, parent)) {
-      SCH_TASK_DLOG("all %d children task done, start to launch parent task %" PRIx64, readyNum, parent->taskId);
+      SCH_TASK_DLOG("all %d children task done, start to launch parent task 0x%" PRIx64, readyNum, parent->taskId);
       SCH_ERR_RET(schLaunchTask(pJob, parent));
     }
   }
@@ -1347,7 +1349,7 @@ int32_t schGetTaskFromList(SHashObj *pTaskList, uint64_t taskId, SSchTask **pTas
 int32_t schGetTaskInJob(SSchJob *pJob, uint64_t taskId, SSchTask **pTask) {
   schGetTaskFromList(pJob->taskList, taskId, pTask);
   if (NULL == *pTask) {
-    SCH_JOB_ELOG("task not found in job task list, taskId:%" PRIx64, taskId);
+    SCH_JOB_ELOG("task not found in job task list, taskId:0x%" PRIx64, taskId);
     SCH_ERR_RET(TSDB_CODE_SCH_INTERNAL_ERROR);
   }
 
@@ -1520,9 +1522,9 @@ void schFreeJobImpl(void *job) {
 
   taosMemoryFreeClear(pJob->userRes.queryRes);
   taosMemoryFreeClear(pJob->resData);
-  taosMemoryFreeClear(pJob);
+  taosMemoryFree(pJob);
 
-  qDebug("QID:0x%" PRIx64 " job freed, refId:%" PRIx64 ", pointer:%p", queryId, refId, pJob);
+  qDebug("QID:0x%" PRIx64 " sch job freed, refId:0x%" PRIx64 ", pointer:%p", queryId, refId, pJob);
 
   int32_t jobNum = atomic_sub_fetch_32(&schMgmt.jobNum, 1);
   if (jobNum == 0) {
@@ -1614,7 +1616,7 @@ int32_t schExecStaticExplainJob(SSchedulerReq *pReq, int64_t *job, bool sync) {
   int32_t  code = 0;
   SSchJob *pJob = taosMemoryCalloc(1, sizeof(SSchJob));
   if (NULL == pJob) {
-    qError("QID:%" PRIx64 " calloc %d failed", pReq->pDag->queryId, (int32_t)sizeof(SSchJob));
+    qError("QID:0x%" PRIx64 " calloc %d failed", pReq->pDag->queryId, (int32_t)sizeof(SSchJob));
     code = TSDB_CODE_QRY_OUT_OF_MEMORY;
     pReq->fp(NULL, pReq->cbParam, code);
     SCH_ERR_RET(code);
@@ -1643,13 +1645,13 @@ int32_t schExecStaticExplainJob(SSchedulerReq *pReq, int64_t *job, bool sync) {
   }
 
   if (NULL == schAcquireJob(refId)) {
-    SCH_JOB_ELOG("schAcquireJob job failed, refId:%" PRIx64, refId);
+    SCH_JOB_ELOG("schAcquireJob job failed, refId:0x%" PRIx64, refId);
     SCH_ERR_JRET(TSDB_CODE_SCH_STATUS_ERROR);
   }
 
   pJob->refId = refId;
 
-  SCH_JOB_DLOG("job refId:%" PRIx64, pJob->refId);
+  SCH_JOB_DLOG("job refId:0x%" PRIx64, pJob->refId);
 
   pJob->status = JOB_TASK_STATUS_PARTIAL_SUCCEED;
   
diff --git a/source/libs/scheduler/src/schRemote.c b/source/libs/scheduler/src/schRemote.c
index 2e9e5e5d1a6ea9d07db38b57595061c3c755c921..0bd747785cb162ed6ad10b7c7fc6f5f77ab28d9e 100644
--- a/source/libs/scheduler/src/schRemote.c
+++ b/source/libs/scheduler/src/schRemote.c
@@ -344,7 +344,7 @@ int32_t schHandleResponseMsg(SSchJob *pJob, SSchTask *pTask, int32_t msgType, ch
     }
     case TDMT_VND_DROP_TASK_RSP: {
       // SHOULD NEVER REACH HERE
-      SCH_TASK_ELOG("invalid status to handle drop task rsp, refId:%" PRIx64, pJob->refId);
+      SCH_TASK_ELOG("invalid status to handle drop task rsp, refId:0x%" PRIx64, pJob->refId);
       SCH_ERR_JRET(TSDB_CODE_SCH_INTERNAL_ERROR);
       break;
     }
@@ -374,7 +374,7 @@ int32_t schHandleCallback(void *param, const SDataBuf *pMsg, int32_t msgType, in
 
   SSchJob *pJob = schAcquireJob(pParam->refId);
   if (NULL == pJob) {
-    qWarn("QID:0x%" PRIx64 ",TID:0x%" PRIx64 "taosAcquireRef job failed, may be dropped, refId:%" PRIx64,
+    qWarn("QID:0x%" PRIx64 ",TID:0x%" PRIx64 "taosAcquireRef job failed, may be dropped, refId:0x%" PRIx64,
           pParam->queryId, pParam->taskId, pParam->refId);
     SCH_ERR_JRET(TSDB_CODE_QRY_JOB_FREED);
   }
@@ -443,7 +443,7 @@ int32_t schHandleExplainCallback(void *param, const SDataBuf *pMsg, int32_t code
 
 int32_t schHandleDropCallback(void *param, const SDataBuf *pMsg, int32_t code) {
   SSchTaskCallbackParam *pParam = (SSchTaskCallbackParam *)param;
-  qDebug("QID:%" PRIx64 ",TID:%" PRIx64 " drop task rsp received, code:%x", pParam->queryId, pParam->taskId, code);
+  qDebug("QID:0x%" PRIx64 ",TID:0x%" PRIx64 " drop task rsp received, code:0x%x", pParam->queryId, pParam->taskId, code);
   taosMemoryFreeClear(param);
   return TSDB_CODE_SUCCESS;
 }
diff --git a/source/libs/scheduler/src/schUtil.c b/source/libs/scheduler/src/schUtil.c
index 93e1fda1d3842b7d89435f9b1b51a5cf23e790d1..73077cbf0f6632e0a7a7b9979e0b6d17baf90fd3 100644
--- a/source/libs/scheduler/src/schUtil.c
+++ b/source/libs/scheduler/src/schUtil.c
@@ -200,7 +200,7 @@ int32_t schUpdateHbConnection(SQueryNodeEpId *epId, SSchTrans *trans) {
   SCH_UNLOCK(SCH_WRITE, &hb->lock);
   SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
 
-  qDebug("hb connection updated, sId:%" PRIx64 ", nodeId:%d, fqdn:%s, port:%d, pTrans:%p, pHandle:%p", schMgmt.sId,
+  qDebug("hb connection updated, sId:0x%" PRIx64 ", nodeId:%d, fqdn:%s, port:%d, pTrans:%p, pHandle:%p", schMgmt.sId,
          epId->nodeId, epId->ep.fqdn, epId->ep.port, trans->pTrans, trans->pHandle);
 
   return TSDB_CODE_SUCCESS;
diff --git a/source/libs/scheduler/src/scheduler.c b/source/libs/scheduler/src/scheduler.c
index 1f2780e1d76babc904577803a602dcef5890e19d..57a405ffa3ffd524e7203a2935a4135ec3bd5208 100644
--- a/source/libs/scheduler/src/scheduler.c
+++ b/source/libs/scheduler/src/scheduler.c
@@ -62,12 +62,14 @@ int32_t schedulerInit(SSchedulerCfg *cfg) {
     SCH_ERR_RET(TSDB_CODE_QRY_SYS_ERROR);
   }
 
-  qInfo("scheduler %" PRIx64 " initizlized, maxJob:%u", schMgmt.sId, schMgmt.cfg.maxJobNum);
+  qInfo("scheduler 0x%" PRIx64 " initizlized, maxJob:%u", schMgmt.sId, schMgmt.cfg.maxJobNum);
 
   return TSDB_CODE_SUCCESS;
 }
 
 int32_t schedulerExecJob(SSchedulerReq *pReq, int64_t *pJob, SQueryResult *pRes) {
+  qDebug("scheduler sync exec job start");
+  
   if (NULL == pReq || NULL == pJob || NULL == pRes) {
     SCH_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
   }
@@ -76,6 +78,8 @@ int32_t schedulerExecJob(SSchedulerReq *pReq, int64_t *pJob, SQueryResult *pRes)
 }
 
 int32_t schedulerAsyncExecJob(SSchedulerReq *pReq, int64_t *pJob) {
+  qDebug("scheduler async exec job start");
+
   int32_t code = 0;
   if (NULL == pReq || NULL == pJob) {
     SCH_ERR_JRET(TSDB_CODE_QRY_INVALID_INPUT);
@@ -93,6 +97,8 @@ _return:
 }
 
 int32_t schedulerFetchRows(int64_t job, void **pData) {
+  qDebug("scheduler sync fetch rows start");
+
   if (NULL == pData) {
     SCH_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
   }
@@ -115,6 +121,8 @@ int32_t schedulerFetchRows(int64_t job, void **pData) {
 }
 
 void schedulerAsyncFetchRows(int64_t job, schedulerFetchCallback fp, void* param) {
+  qDebug("scheduler async fetch rows start");
+
   int32_t code = 0;
   if (NULL == fp || NULL == param) {
     SCH_ERR_JRET(TSDB_CODE_QRY_INVALID_INPUT);
@@ -146,12 +154,12 @@ int32_t schedulerGetTasksStatus(int64_t job, SArray *pSub) {
   int32_t  code = 0;
   SSchJob *pJob = schAcquireJob(job);
   if (NULL == pJob) {
-    qDebug("acquire job from jobRef list failed, may not started or dropped, refId:%" PRIx64, job);
+    qDebug("acquire job from jobRef list failed, may not started or dropped, refId:0x%" PRIx64, job);
     SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
   }
 
   if (pJob->status < JOB_TASK_STATUS_NOT_START || pJob->levelNum <= 0 || NULL == pJob->levels) {
-    qDebug("job not initialized or not executable job, refId:%" PRIx64, job);
+    qDebug("job not initialized or not executable job, refId:0x%" PRIx64, job);
     SCH_ERR_JRET(TSDB_CODE_SCH_STATUS_ERROR);
   }
 
@@ -206,14 +214,14 @@ void schedulerFreeJob(int64_t job, int32_t errCode) {
 
   int32_t code = schProcessOnJobDropped(pJob, errCode);
   if (TSDB_CODE_SCH_JOB_IS_DROPPING == code) {
-    SCH_JOB_DLOG("sch job is already dropping, refId:%" PRIx64, job);
+    SCH_JOB_DLOG("sch job is already dropping, refId:0x%" PRIx64, job);
     return;
   }
 
-  SCH_JOB_DLOG("start to remove job from jobRef list, refId:%" PRIx64, job);
+  SCH_JOB_DLOG("start to remove job from jobRef list, refId:0x%" PRIx64, job);
 
   if (taosRemoveRef(schMgmt.jobRef, job)) {
-    SCH_JOB_ELOG("remove job from job list failed, refId:%" PRIx64, job);
+    SCH_JOB_ELOG("remove job from job list failed, refId:0x%" PRIx64, job);
   }
 
   schReleaseJob(job);
diff --git a/tools/shell/src/shellEngine.c b/tools/shell/src/shellEngine.c
index 8ed0e9ddcf43a490c905ae9db5ada09f202d3899..1f29237d38b0441507bef05a39586d8a3b80ca56 100644
--- a/tools/shell/src/shellEngine.c
+++ b/tools/shell/src/shellEngine.c
@@ -855,8 +855,7 @@ void shellGetGrantInfo() {
     if (code == TSDB_CODE_OPS_NOT_SUPPORT) {
       fprintf(stdout, "Server is Community Edition, %s\n\n", sinfo);
     } else {
-      fprintf(stderr, "Failed to check Server Edition, Reason:0x%04x:%s\n\n", taos_errno(shell.conn),
-              taos_errstr(shell.conn));
+      fprintf(stderr, "Failed to check Server Edition, Reason:0x%04x:%s\n\n", code, taos_errstr(tres));
     }
     return;
   }