diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index 9bd5c1c016..a5887e8807 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -112,7 +112,13 @@ typedef struct SCtgRuntimeStat {
 } SCtgRuntimeStat;
 
 typedef struct SCtgCacheStat {
-
+  uint64_t clusterNum;
+  uint64_t dbNum;
+  uint64_t tblNum;
+  uint64_t vgHitNum;
+  uint64_t vgMissNum;
+  uint64_t tblHitNum;
+  uint64_t tblMissNum;
 } SCtgCacheStat;
 
 typedef struct SCatalogStat {
@@ -186,7 +192,7 @@ typedef struct SCatalogMgmt {
   bool                  exit;
   SRWLatch              lock;
   SCtgQueue             queue;
-  TdThread             updateThread;  
+  TdThread              updateThread;  
   SHashObj             *pCluster;     //key: clusterId, value: SCatalog*
   SCatalogStat          stat;
   SCatalogCfg           cfg;
@@ -206,6 +212,10 @@ typedef struct SCtgAction {
 
 #define CTG_STAT_ADD(n) atomic_add_fetch_64(&(n), 1)
 #define CTG_STAT_SUB(n) atomic_sub_fetch_64(&(n), 1)
+#define CTG_STAT_GET(n) atomic_load_64(&(n))
+
+#define CTG_RUNTIME_STAT_ADD(_item) (CTG_STAT_ADD(gCtgMgmt.stat.runtime._item))
+#define CTG_CACHE_STAT_ADD(_item) (CTG_STAT_ADD(gCtgMgmt.stat.cache._item))
 
 #define CTG_IS_META_NULL(type) ((type) == META_TYPE_NULL_TABLE)
 #define CTG_IS_META_CTABLE(type) ((type) == META_TYPE_CTABLE)
@@ -291,6 +301,9 @@ typedef struct SCtgAction {
 #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)
 
 
+extern void ctgdShowTableMeta(SCatalog* pCtg, const char *tbName, STableMeta* p);
+extern void ctgdShowClusterCache(SCatalog* pCtg);
+extern int32_t ctgdShowCacheInfo(void);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index 6eab0d280b..73b363ec5c 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -24,8 +24,8 @@ int32_t ctgActRemoveDB(SCtgMetaAction *action);
 int32_t ctgActRemoveStb(SCtgMetaAction *action);
 int32_t ctgActRemoveTbl(SCtgMetaAction *action);
 
+extern SCtgDebug gCTGDebug;
 SCatalogMgmt gCtgMgmt = {0};
-SCtgDebug gCTGDebug = {0};
 SCtgAction gCtgAction[CTG_ACT_MAX] = {{
                             CTG_ACT_UPDATE_VG,
                             "update vgInfo",
@@ -53,181 +53,6 @@ SCtgAction gCtgAction[CTG_ACT_MAX] = {{
                           }
 };
 
-int32_t ctgDbgEnableDebug(char *option) {
-  if (0 == strcasecmp(option, "lock")) {
-    gCTGDebug.lockEnable = true;
-    qDebug("lock debug enabled");
-    return TSDB_CODE_SUCCESS;
-  }
-
-  if (0 == strcasecmp(option, "cache")) {
-    gCTGDebug.cacheEnable = true;
-    qDebug("cache debug enabled");
-    return TSDB_CODE_SUCCESS;
-  }
-
-  if (0 == strcasecmp(option, "api")) {
-    gCTGDebug.apiEnable = true;
-    qDebug("api debug enabled");
-    return TSDB_CODE_SUCCESS;
-  }
-
-  if (0 == strcasecmp(option, "meta")) {
-    gCTGDebug.metaEnable = true;
-    qDebug("api debug enabled");
-    return TSDB_CODE_SUCCESS;
-  }
-
-  qError("invalid debug option:%s", option);
-  
-  return TSDB_CODE_CTG_INTERNAL_ERROR;
-}
-
-int32_t ctgDbgGetStatNum(char *option, void *res) {
-  if (0 == strcasecmp(option, "runtime.qDoneNum")) {
-    *(uint64_t *)res = atomic_load_64(&gCtgMgmt.stat.runtime.qDoneNum);
-    return TSDB_CODE_SUCCESS;
-  }
-
-  qError("invalid stat option:%s", option);
-  
-  return TSDB_CODE_CTG_INTERNAL_ERROR;
-}
-
-int32_t ctgDbgGetTbMetaNum(SCtgDBCache *dbCache) {
-  return dbCache->tbCache.metaCache ? (int32_t)taosHashGetSize(dbCache->tbCache.metaCache) : 0;
-}
-
-int32_t ctgDbgGetStbNum(SCtgDBCache *dbCache) {
-  return dbCache->tbCache.stbCache ? (int32_t)taosHashGetSize(dbCache->tbCache.stbCache) : 0;
-}
-
-int32_t ctgDbgGetRentNum(SCtgRentMgmt *rent) {
-  int32_t num = 0;
-  for (uint16_t i = 0; i < rent->slotNum; ++i) {
-    SCtgRentSlot *slot = &rent->slots[i];
-    if (NULL == slot->meta) {
-      continue;
-    }
-
-    num += taosArrayGetSize(slot->meta);
-  }
-
-  return num;
-}
-
-int32_t ctgDbgGetClusterCacheNum(SCatalog* pCtg, int32_t type) {
-  if (NULL == pCtg || NULL == pCtg->dbCache) {
-    return 0;
-  }
-
-  switch (type) {
-    case CTG_DBG_DB_NUM:
-      return (int32_t)taosHashGetSize(pCtg->dbCache);
-    case CTG_DBG_DB_RENT_NUM:
-      return ctgDbgGetRentNum(&pCtg->dbRent);
-    case CTG_DBG_STB_RENT_NUM:
-      return ctgDbgGetRentNum(&pCtg->stbRent);
-    default:
-      break;
-  }
-
-  SCtgDBCache *dbCache = NULL;
-  int32_t num = 0;
-  void *pIter = taosHashIterate(pCtg->dbCache, NULL);
-  while (pIter) {
-    dbCache = (SCtgDBCache *)pIter;
-    switch (type) {
-      case CTG_DBG_META_NUM:
-        num += ctgDbgGetTbMetaNum(dbCache);
-        break;
-      case CTG_DBG_STB_NUM:
-        num += ctgDbgGetStbNum(dbCache);
-        break;
-      default:
-        ctgError("invalid type:%d", type);
-        break;
-    }
-    pIter = taosHashIterate(pCtg->dbCache, pIter);
-  }
-
-  return num;
-}
-
-void ctgDbgShowTableMeta(SCatalog* pCtg, const char *tbName, STableMeta* p) {
-  if (!gCTGDebug.metaEnable) {
-    return;
-  }
-
-  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);
-    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",
-     tbName, p->tableType, p->vgId, p->uid, p->suid, p->sversion, p->tversion, c->numOfTags, c->precision, c->numOfColumns, c->rowSize);
-  }
-
-  int32_t colNum = c->numOfColumns + c->numOfTags;
-  for (int32_t i = 0; i < colNum; ++i) {
-    SSchema *s = &p->schema[i];
-    ctgDebug("[%d] name:%s, type:%d, colId:%d, bytes:%d", i, s->name, s->type, s->colId, s->bytes);
-  }
-}
-
-void ctgDbgShowDBCache(SCatalog* pCtg, SHashObj *dbHash) {
-  if (NULL == dbHash || !gCTGDebug.cacheEnable) {
-    return;
-  }
-
-  int32_t i = 0;
-  SCtgDBCache *dbCache = NULL;
-  void *pIter = taosHashIterate(dbHash, NULL);
-  while (pIter) {
-    char *dbFName = NULL;
-    size_t len = 0;
-    
-    dbCache = (SCtgDBCache *)pIter;
-
-    dbFName = taosHashGetKey(pIter, &len);
-
-    int32_t metaNum = dbCache->tbCache.metaCache ? taosHashGetSize(dbCache->tbCache.metaCache) : 0;
-    int32_t stbNum = dbCache->tbCache.stbCache ? taosHashGetSize(dbCache->tbCache.stbCache) : 0;
-    int32_t vgVersion = CTG_DEFAULT_INVALID_VERSION;
-    int32_t hashMethod = -1;
-    int32_t vgNum = 0;
-
-    if (dbCache->vgInfo) {
-      vgVersion = dbCache->vgInfo->vgVersion;
-      hashMethod = dbCache->vgInfo->hashMethod;
-      if (dbCache->vgInfo->vgHash) {
-        vgNum = taosHashGetSize(dbCache->vgInfo->vgHash);
-      }
-    }
-    
-    ctgDebug("[%d] db [%.*s][%"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);
-  }
-}
-
-
-
-
-void ctgDbgShowClusterCache(SCatalog* pCtg) {
-  if (!gCTGDebug.cacheEnable || NULL == pCtg) {
-    return;
-  }
-
-  ctgDebug("## cluster %"PRIx64" %p cache Info ##", pCtg->clusterId, pCtg);
-  ctgDebug("db:%d meta:%d stb:%d dbRent:%d stbRent:%d", ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM), ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM),
-    ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_NUM), ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_RENT_NUM), ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM));    
-  
-  ctgDbgShowDBCache(pCtg, pCtg->dbCache);
-}
-
 
 void ctgFreeMetaRent(SCtgRentMgmt *mgmt) {
   if (NULL == mgmt->slots) {
@@ -361,7 +186,7 @@ int32_t ctgPushAction(SCatalog* pCtg, SCtgMetaAction *action) {
   CTG_UNLOCK(CTG_WRITE, &gCtgMgmt.queue.qlock);
 
   CTG_QUEUE_ADD();
-  CTG_STAT_ADD(gCtgMgmt.stat.runtime.qNum);
+  CTG_RUNTIME_STAT_ADD(qNum);
 
   tsem_post(&gCtgMgmt.queue.reqSem);
 
@@ -1595,7 +1420,7 @@ int32_t ctgUpdateTblMeta(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFName, ui
   }
 
   ctgDebug("tbmeta updated to cache, dbFName:%s, tbName:%s, tbType:%d", dbFName, tbName, meta->tableType);
-  ctgDbgShowTableMeta(pCtg, tbName, meta);
+  ctgdShowTableMeta(pCtg, tbName, meta);
 
   if (!isStb) {
     CTG_UNLOCK(CTG_READ, &tbCache->metaLock);  
@@ -1962,7 +1787,7 @@ _return:
 
   if (*pTableMeta) {
     ctgDebug("tbmeta returned, tbName:%s, tbType:%d", pTableName->tname, (*pTableMeta)->tableType);
-    ctgDbgShowTableMeta(pCtg, pTableName->tname, *pTableMeta);
+    ctgdShowTableMeta(pCtg, pTableName->tname, *pTableMeta);
   }
 
   CTG_RET(code);
@@ -2161,9 +1986,9 @@ void* ctgUpdateThreadFunc(void* param) {
       tsem_post(&gCtgMgmt.queue.rspSem);
     }
 
-    CTG_STAT_ADD(gCtgMgmt.stat.runtime.qDoneNum); 
+    CTG_RUNTIME_STAT_ADD(qDoneNum); 
 
-    ctgDbgShowClusterCache(pCtg);
+    ctgdShowClusterCache(pCtg);
   }
 
   CTG_UNLOCK(CTG_READ, &gCtgMgmt.lock);
diff --git a/source/libs/catalog/src/catalogDbg.c b/source/libs/catalog/src/catalogDbg.c
new file mode 100644
index 0000000000..1d4ad0082c
--- /dev/null
+++ b/source/libs/catalog/src/catalogDbg.c
@@ -0,0 +1,222 @@
+/*
+ * 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/>.
+ */
+
+#include "trpc.h"
+#include "query.h"
+#include "tname.h"
+#include "catalogInt.h"
+
+extern SCatalogMgmt gCtgMgmt;
+SCtgDebug gCTGDebug = {0};
+
+int32_t ctgdEnableDebug(char *option) {
+  if (0 == strcasecmp(option, "lock")) {
+    gCTGDebug.lockEnable = true;
+    qDebug("lock debug enabled");
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (0 == strcasecmp(option, "cache")) {
+    gCTGDebug.cacheEnable = true;
+    qDebug("cache debug enabled");
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (0 == strcasecmp(option, "api")) {
+    gCTGDebug.apiEnable = true;
+    qDebug("api debug enabled");
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (0 == strcasecmp(option, "meta")) {
+    gCTGDebug.metaEnable = true;
+    qDebug("api debug enabled");
+    return TSDB_CODE_SUCCESS;
+  }
+
+  qError("invalid debug option:%s", option);
+  
+  return TSDB_CODE_CTG_INTERNAL_ERROR;
+}
+
+int32_t ctgdGetStatNum(char *option, void *res) {
+  if (0 == strcasecmp(option, "runtime.qDoneNum")) {
+    *(uint64_t *)res = atomic_load_64(&gCtgMgmt.stat.runtime.qDoneNum);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  qError("invalid stat option:%s", option);
+  
+  return TSDB_CODE_CTG_INTERNAL_ERROR;
+}
+
+int32_t ctgdGetTbMetaNum(SCtgDBCache *dbCache) {
+  return dbCache->tbCache.metaCache ? (int32_t)taosHashGetSize(dbCache->tbCache.metaCache) : 0;
+}
+
+int32_t ctgdGetStbNum(SCtgDBCache *dbCache) {
+  return dbCache->tbCache.stbCache ? (int32_t)taosHashGetSize(dbCache->tbCache.stbCache) : 0;
+}
+
+int32_t ctgdGetRentNum(SCtgRentMgmt *rent) {
+  int32_t num = 0;
+  for (uint16_t i = 0; i < rent->slotNum; ++i) {
+    SCtgRentSlot *slot = &rent->slots[i];
+    if (NULL == slot->meta) {
+      continue;
+    }
+
+    num += taosArrayGetSize(slot->meta);
+  }
+
+  return num;
+}
+
+int32_t ctgdGetClusterCacheNum(SCatalog* pCtg, int32_t type) {
+  if (NULL == pCtg || NULL == pCtg->dbCache) {
+    return 0;
+  }
+
+  switch (type) {
+    case CTG_DBG_DB_NUM:
+      return (int32_t)taosHashGetSize(pCtg->dbCache);
+    case CTG_DBG_DB_RENT_NUM:
+      return ctgdGetRentNum(&pCtg->dbRent);
+    case CTG_DBG_STB_RENT_NUM:
+      return ctgdGetRentNum(&pCtg->stbRent);
+    default:
+      break;
+  }
+
+  SCtgDBCache *dbCache = NULL;
+  int32_t num = 0;
+  void *pIter = taosHashIterate(pCtg->dbCache, NULL);
+  while (pIter) {
+    dbCache = (SCtgDBCache *)pIter;
+    switch (type) {
+      case CTG_DBG_META_NUM:
+        num += ctgdGetTbMetaNum(dbCache);
+        break;
+      case CTG_DBG_STB_NUM:
+        num += ctgdGetStbNum(dbCache);
+        break;
+      default:
+        ctgError("invalid type:%d", type);
+        break;
+    }
+    pIter = taosHashIterate(pCtg->dbCache, pIter);
+  }
+
+  return num;
+}
+
+void ctgdShowTableMeta(SCatalog* pCtg, const char *tbName, STableMeta* p) {
+  if (!gCTGDebug.metaEnable) {
+    return;
+  }
+
+  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);
+    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",
+     tbName, p->tableType, p->vgId, p->uid, p->suid, p->sversion, p->tversion, c->numOfTags, c->precision, c->numOfColumns, c->rowSize);
+  }
+
+  int32_t colNum = c->numOfColumns + c->numOfTags;
+  for (int32_t i = 0; i < colNum; ++i) {
+    SSchema *s = &p->schema[i];
+    ctgDebug("[%d] name:%s, type:%d, colId:%d, bytes:%d", i, s->name, s->type, s->colId, s->bytes);
+  }
+}
+
+void ctgdShowDBCache(SCatalog* pCtg, SHashObj *dbHash) {
+  if (NULL == dbHash || !gCTGDebug.cacheEnable) {
+    return;
+  }
+
+  int32_t i = 0;
+  SCtgDBCache *dbCache = NULL;
+  void *pIter = taosHashIterate(dbHash, NULL);
+  while (pIter) {
+    char *dbFName = NULL;
+    size_t len = 0;
+    
+    dbCache = (SCtgDBCache *)pIter;
+
+    dbFName = taosHashGetKey(pIter, &len);
+
+    int32_t metaNum = dbCache->tbCache.metaCache ? taosHashGetSize(dbCache->tbCache.metaCache) : 0;
+    int32_t stbNum = dbCache->tbCache.stbCache ? taosHashGetSize(dbCache->tbCache.stbCache) : 0;
+    int32_t vgVersion = CTG_DEFAULT_INVALID_VERSION;
+    int32_t hashMethod = -1;
+    int32_t vgNum = 0;
+
+    if (dbCache->vgInfo) {
+      vgVersion = dbCache->vgInfo->vgVersion;
+      hashMethod = dbCache->vgInfo->hashMethod;
+      if (dbCache->vgInfo->vgHash) {
+        vgNum = taosHashGetSize(dbCache->vgInfo->vgHash);
+      }
+    }
+    
+    ctgDebug("[%d] db [%.*s][%"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);
+  }
+}
+
+
+
+
+void ctgdShowClusterCache(SCatalog* pCtg) {
+  if (!gCTGDebug.cacheEnable || NULL == pCtg) {
+    return;
+  }
+
+  ctgDebug("## cluster %"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);
+}
+
+int32_t ctgdShowCacheInfo(void) {
+  if (!gCTGDebug.cacheEnable) {
+    return TSDB_CODE_CTG_OUT_OF_SERVICE;
+  }
+
+  CTG_API_ENTER();
+  
+  SCatalog *pCtg = NULL;
+  void *pIter = taosHashIterate(gCtgMgmt.pCluster, NULL);
+  while (pIter) {
+    pCtg = *(SCatalog **)pIter;
+
+    if (pCtg) {
+      ctgdShowClusterCache(pCtg);
+    }
+    
+    pIter = taosHashIterate(gCtgMgmt.pCluster, pIter);
+  }
+
+  CTG_API_LEAVE(TSDB_CODE_SUCCESS);
+}
+
diff --git a/source/libs/catalog/test/catalogTests.cpp b/source/libs/catalog/test/catalogTests.cpp
index e62819b078..27d08f6428 100644
--- a/source/libs/catalog/test/catalogTests.cpp
+++ b/source/libs/catalog/test/catalogTests.cpp
@@ -39,10 +39,10 @@ namespace {
 
 extern "C" int32_t ctgGetTableMetaFromCache(struct SCatalog *pCatalog, const SName *pTableName, STableMeta **pTableMeta,
                                             int32_t *exist, int32_t flag, uint64_t *dbId);
-extern "C" int32_t ctgDbgGetClusterCacheNum(struct SCatalog* pCatalog, int32_t type);
+extern "C" int32_t ctgdGetClusterCacheNum(struct SCatalog* pCatalog, int32_t type);
 extern "C" int32_t ctgActUpdateTbl(SCtgMetaAction *action);
-extern "C" int32_t ctgDbgEnableDebug(char *option);
-extern "C" int32_t ctgDbgGetStatNum(char *option, void *res);
+extern "C" int32_t ctgdEnableDebug(char *option);
+extern "C" int32_t ctgdGetStatNum(char *option, void *res);
 
 void ctgTestSetRspTableMeta();
 void ctgTestSetRspCTableMeta();
@@ -140,9 +140,9 @@ void ctgTestInitLogFile() {
   qDebugFlag = 159;
   strcpy(tsLogDir, "/var/log/taos");
 
-  ctgDbgEnableDebug("api");
-  ctgDbgEnableDebug("meta");
-  ctgDbgEnableDebug("cache");
+  ctgdEnableDebug("api");
+  ctgdEnableDebug("meta");
+  ctgdEnableDebug("cache");
   
   if (taosInitLog(defaultLogFileNamePrefix, maxLogFileNum) < 0) {
     printf("failed to open log file in directory:%s\n", tsLogDir);
@@ -879,7 +879,7 @@ TEST(tableMeta, normalTable) {
   ASSERT_EQ(vgInfo.vgId, 8);
   ASSERT_EQ(vgInfo.epSet.numOfEps, 3);
 
-  while (0 == ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM)) {
+  while (0 == ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM)) {
     taosMsleep(50);
   }
   
@@ -899,7 +899,7 @@ TEST(tableMeta, normalTable) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
   while (true) {
-    uint32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    uint32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
     if (0 == n) {
       taosMsleep(50);
     } else {
@@ -994,7 +994,7 @@ TEST(tableMeta, childTableCase) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
   while (true) {
-    uint32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    uint32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
     if (0 == n) {
       taosMsleep(50);
     } else {
@@ -1103,7 +1103,7 @@ TEST(tableMeta, superTableCase) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
   while (true) {
-    uint32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    uint32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
     if (0 == n) {
       taosMsleep(50);
     } else {
@@ -1130,7 +1130,7 @@ TEST(tableMeta, superTableCase) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
   while (true) {
-    uint32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    uint32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
     if (2 != n) {
       taosMsleep(50);
     } else {
@@ -1228,7 +1228,7 @@ TEST(tableMeta, rmStbMeta) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
   while (true) {
-    uint32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    uint32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
     if (0 == n) {
       taosMsleep(50);
     } else {
@@ -1241,8 +1241,8 @@ TEST(tableMeta, rmStbMeta) {
   ASSERT_EQ(code, 0);
 
   while (true) {
-    int32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
-    int32_t m = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM);
+    int32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    int32_t m = ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM);
     if (n || m) {
       taosMsleep(50);
     } else {
@@ -1251,11 +1251,11 @@ TEST(tableMeta, rmStbMeta) {
   }
 
 
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM), 1);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM), 0);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_NUM), 0);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_RENT_NUM), 1);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM), 0);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM), 0);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_NUM), 0);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_RENT_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM), 0);
 
   catalogDestroy();
   memset(&gCtgMgmt, 0, sizeof(gCtgMgmt));
@@ -1298,7 +1298,7 @@ TEST(tableMeta, updateStbMeta) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
   while (true) {
-    uint32_t n = ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
+    uint32_t n = ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM);
     if (0 == n) {
       taosMsleep(50);
     } else {
@@ -1318,7 +1318,7 @@ TEST(tableMeta, updateStbMeta) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n != 3) {
       taosMsleep(50);
     } else {
@@ -1326,11 +1326,11 @@ TEST(tableMeta, updateStbMeta) {
     }
   }
 
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM), 1);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM), 1);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_NUM), 1);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_DB_RENT_NUM), 1);
-  ASSERT_EQ(ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_DB_RENT_NUM), 1);
+  ASSERT_EQ(ctgdGetClusterCacheNum(pCtg, CTG_DBG_STB_RENT_NUM), 1);
 
   code = catalogGetTableMeta(pCtg, mockPointer, (const SEpSet *)mockPointer, &n, &tableMeta);
   ASSERT_EQ(code, 0);
@@ -1388,7 +1388,7 @@ TEST(refreshGetMeta, normal2normal) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -1409,7 +1409,7 @@ TEST(refreshGetMeta, normal2normal) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
   taosMemoryFreeClear(tableMeta);
 
-  while (0 == ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
+  while (0 == ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
     taosMsleep(50);
   }
 
@@ -1467,7 +1467,7 @@ TEST(refreshGetMeta, normal2notexist) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -1488,7 +1488,7 @@ TEST(refreshGetMeta, normal2notexist) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
   taosMemoryFreeClear(tableMeta);
 
-  while (0 == ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
+  while (0 == ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
     taosMsleep(50);
   }
 
@@ -1541,7 +1541,7 @@ TEST(refreshGetMeta, normal2child) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -1562,7 +1562,7 @@ TEST(refreshGetMeta, normal2child) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
   taosMemoryFreeClear(tableMeta);
 
-  while (0 == ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
+  while (0 == ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
     taosMsleep(50);
   }
 
@@ -1625,7 +1625,7 @@ TEST(refreshGetMeta, stable2child) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -1647,7 +1647,7 @@ TEST(refreshGetMeta, stable2child) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
   taosMemoryFreeClear(tableMeta);
 
-  while (0 == ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
+  while (0 == ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
     taosMsleep(50);
   }
 
@@ -1710,7 +1710,7 @@ TEST(refreshGetMeta, stable2stable) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -1732,7 +1732,7 @@ TEST(refreshGetMeta, stable2stable) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
   taosMemoryFreeClear(tableMeta);
 
-  while (0 == ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
+  while (0 == ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
     taosMsleep(50);
   }
 
@@ -1798,7 +1798,7 @@ TEST(refreshGetMeta, child2stable) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -1818,7 +1818,7 @@ TEST(refreshGetMeta, child2stable) {
   ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
   taosMemoryFreeClear(tableMeta);
 
-  while (2 != ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
+  while (2 != ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM)) {
     taosMsleep(50);
   }
 
@@ -2015,7 +2015,7 @@ TEST(dbVgroup, getSetDbVgroupCase) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n > 0) {
       break;
     }
@@ -2041,7 +2041,7 @@ TEST(dbVgroup, getSetDbVgroupCase) {
 
   while (true) {
     uint64_t n = 0;
-    ctgDbgGetStatNum("runtime.qDoneNum", (void *)&n);
+    ctgdGetStatNum("runtime.qDoneNum", (void *)&n);
     if (n != 3) {
       taosMsleep(50);
     } else {
@@ -2266,7 +2266,7 @@ TEST(rentTest, allRent) {
     ASSERT_EQ(tableMeta->tableInfo.precision, 1);
     ASSERT_EQ(tableMeta->tableInfo.rowSize, 12);
 
-    while (ctgDbgGetClusterCacheNum(pCtg, CTG_DBG_META_NUM) < i) {
+    while (ctgdGetClusterCacheNum(pCtg, CTG_DBG_META_NUM) < i) {
       taosMsleep(50);
     }