feature/qnode

include/libs/catalog/catalog.h

@@ -99,7 +99,7 @@ int32_t catalogGetDBVgroupVersion(struct SCatalog* pCatalog, const char* dbName,
  */
 int32_t catalogGetDBVgroup(struct SCatalog* pCatalog, void *pTransporter, const SEpSet* pMgmtEps, const char* pDBName, bool forceUpdate, SArray** pVgroupList);
 
-int32_t catalogUpdateDBVgroup(struct SCatalog* pCatalog, const char* dbName, SDBVgroupInfo* dbInfo);
+int32_t catalogUpdateDBVgroup(struct SCatalog* pCatalog, const char* dbName, uint64_t dbId, SDBVgroupInfo* dbInfo);
 
 int32_t catalogRemoveDB(struct SCatalog* pCatalog, const char* dbName, uint64_t dbId);
 

include/libs/qcom/query.h

@@ -89,6 +89,7 @@ typedef struct SDBVgroupInfo {
 
 typedef struct SUseDbOutput {
   char           db[TSDB_DB_FNAME_LEN];
+  uint64_t       dbId;
   SDBVgroupInfo *dbVgroup;
 } SUseDbOutput;
 

source/client/src/clientHb.c

@@ -44,7 +44,6 @@ static int32_t hbProcessDBInfoRsp(void *value, int32_t valueLen, struct SCatalog
       code = catalogRemoveDB(pCatalog, rsp->db, rsp->uid);
     } else {
       SDBVgroupInfo vgInfo = {0};
-      vgInfo.dbId = rsp->uid;
       vgInfo.vgVersion = rsp->vgVersion;
       vgInfo.hashMethod = rsp->hashMethod;
       vgInfo.vgHash = taosHashInit(rsp->vgNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_ENTRY_LOCK);
@@ -69,7 +68,7 @@ static int32_t hbProcessDBInfoRsp(void *value, int32_t valueLen, struct SCatalog
         }
       }  
       
-      code = catalogUpdateDBVgroup(pCatalog, rsp->db, &vgInfo);
+      code = catalogUpdateDBVgroup(pCatalog, rsp->db, rsp->uid, &vgInfo);
       if (code) {
         taosHashCleanup(vgInfo.vgHash);
       }

source/libs/catalog/inc/catalogInt.h

@@ -48,18 +48,22 @@ enum {
 };
 
 typedef struct SCtgDebug {
-  int32_t lockDebug;
+  bool     lockDebug;
+  bool     cacheDebug;
+  uint32_t showCachePeriodSec;
 } SCtgDebug;
 
 
 typedef struct SCtgTbMetaCache {
   SRWLatch  stbLock;
-  SHashObj *cache;           //key:tbname, value:STableMeta
+  SRWLatch  metaLock;        // RC between cache destroy and all other operations
+  SHashObj *metaCache;       //key:tbname, value:STableMeta
   SHashObj *stbCache;        //key:suid, value:STableMeta*
 } SCtgTbMetaCache;
 
 typedef struct SCtgDBCache {
   SRWLatch         vgLock;
+  uint64_t         dbId;
   int8_t           deleted;
   SDBVgroupInfo   *vgInfo;  
   SCtgTbMetaCache  tbCache;
@@ -136,7 +140,8 @@ typedef uint32_t (*tableNameHashFp)(const char *, uint32_t);
 #define CTG_RET(c) do { int32_t _code = c; if (_code != TSDB_CODE_SUCCESS) { terrno = _code; } return _code; } while (0)
 #define CTG_ERR_JRET(c) do { code = c; if (code != TSDB_CODE_SUCCESS) { terrno = code; goto _return; } } while (0)
 
-#define CTG_LOCK_DEBUG(...) do { if (gCTGDebug.lockDebug) { qDebug(__VA_ARGS__); } } while (0)
+#define CTG_LOCK_DEBUG(...) do { if (gCTGDebug.lockDebug) { ctgDebug(__VA_ARGS__); } } while (0)
+#define CTG_CACHE_DEBUG(...) do { if (gCTGDebug.cacheDebug) { ctgDebug(__VA_ARGS__); } } while (0)
 
 #define TD_RWLATCH_WRITE_FLAG_COPY 0x40000000
 
@@ -173,6 +178,8 @@ typedef uint32_t (*tableNameHashFp)(const char *, uint32_t);
 } while (0)
 
 
+
+
 #ifdef __cplusplus
 }
 #endif

source/libs/catalog/src/catalog.c

@@ -22,6 +22,99 @@ SCatalogMgmt ctgMgmt = {0};
 
 SCtgDebug gCTGDebug = {0};
 
+void ctgShowDBCache(SHashObj *dbHash) {
+  if (NULL == dbHash) {
+    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;
+
+    taosHashGetKey(dbCache, &dbFName, &len);
+    
+    CTG_CACHE_DEBUG("** %dth db [%.*s] **", i, len, dbFName);
+    
+    pIter = taosHashIterate(dbHash, pIter);
+  }
+}
+
+void ctgShowClusterCache(struct SCatalog* pCatalog) {
+  if (NULL == pCatalog) {
+    return;
+  }
+
+  CTG_CACHE_DEBUG("## cluster %"PRIx64" cache Info ##", pCatalog->clusterId);
+  CTG_CACHE_DEBUG("db cache number:%d", pCatalog->dbCache ? taosHashGetSize(pCatalog->dbCache) : 0);    
+  ctgShowDBCache(pCatalog->dbCache);
+
+}
+
+int32_t ctgInitDBCache(struct SCatalog* pCatalog) {
+  if (NULL == pCatalog->dbCache) {
+    SHashObj *cache = taosHashInit(ctgMgmt.cfg.maxDBCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
+    if (NULL == cache) {
+      ctgError("taosHashInit %d failed", CTG_DEFAULT_CACHE_DB_NUMBER);
+      CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+    }
+
+    if (NULL != atomic_val_compare_exchange_ptr(&pCatalog->dbCache, NULL, cache)) {
+      taosHashCleanup(cache);
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t ctgInitTbMetaCache(struct SCatalog* pCatalog, SCtgDBCache *dbCache) {
+  if (NULL == dbCache->tbCache.metaCache) {
+    if (dbCache->deleted) {
+      ctgInfo("db is dropping, dbId:%"PRIx64, dbCache->dbId);
+      CTG_ERR_RET(TSDB_CODE_CTG_DB_DROPPED);
+    }
+
+    SHashObj *metaCache = taosHashInit(ctgMgmt.cfg.maxTblCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
+    if (NULL == metaCache) {
+      ctgError("taosHashInit failed, num:%d", ctgMgmt.cfg.maxTblCacheNum);
+      CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+    }
+    
+    if (NULL != atomic_val_compare_exchange_ptr(&dbCache->tbCache.metaCache, NULL, metaCache)) {
+      taosHashCleanup(metaCache);
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t ctgInitStbCache(struct SCatalog* pCatalog, SCtgDBCache *dbCache) {
+  if (NULL == dbCache->tbCache.stbCache) {
+    if (dbCache->deleted) {
+      ctgInfo("db is dropping, dbId:%"PRIx64, dbCache->dbId);
+      CTG_ERR_RET(TSDB_CODE_CTG_DB_DROPPED);
+    }
+  
+    SHashObj *cache = taosHashInit(ctgMgmt.cfg.maxTblCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_UBIGINT), true, HASH_ENTRY_LOCK);
+    if (NULL == cache) {
+      ctgError("taosHashInit failed, num:%d", ctgMgmt.cfg.maxTblCacheNum);
+      CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+    }
+
+    if (NULL != atomic_val_compare_exchange_ptr(&dbCache->tbCache.stbCache, NULL, cache)) {
+      taosHashCleanup(cache);
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 
 void ctgFreeMetaRent(SCtgRentMgmt *mgmt) {
   if (NULL == mgmt->slots) {
@@ -40,18 +133,20 @@ void ctgFreeMetaRent(SCtgRentMgmt *mgmt) {
 }
 
 
-void ctgFreeTableMetaCache(SCtgTbMetaCache *table) {
-  CTG_LOCK(CTG_WRITE, &table->stbLock);
-  if (table->stbCache) {
-    taosHashCleanup(table->stbCache);
-    table->stbCache = NULL;
+void ctgFreeTableMetaCache(SCtgTbMetaCache *cache) {
+  CTG_LOCK(CTG_WRITE, &cache->stbLock);
+  if (cache->stbCache) {
+    taosHashCleanup(cache->stbCache);
+    cache->stbCache = NULL;
   }
-  CTG_UNLOCK(CTG_WRITE, &table->stbLock);
+  CTG_UNLOCK(CTG_WRITE, &cache->stbLock);
 
-  if (table->cache) {
-    taosHashCleanup(table->cache);
-    table->cache = NULL;
+  CTG_LOCK(CTG_WRITE, &cache->metaLock);
+  if (cache->metaCache) {
+    taosHashCleanup(cache->metaCache);
+    cache->metaCache = NULL;
   }
+  CTG_UNLOCK(CTG_WRITE, &cache->metaLock);
 }
 
 void ctgFreeDbCache(SCtgDBCache *dbCache) {
@@ -61,9 +156,8 @@ void ctgFreeDbCache(SCtgDBCache *dbCache) {
 
   atomic_store_8(&dbCache->deleted, 1);
 
-  SDBVgroupInfo *dbInfo = NULL;
+  CTG_LOCK(CTG_WRITE, &dbCache->vgLock);
   if (dbCache->vgInfo) {
-    CTG_LOCK(CTG_WRITE, &dbCache->vgLock);
 
     if (dbCache->vgInfo->vgHash) {
       taosHashCleanup(dbCache->vgInfo->vgHash);
@@ -71,8 +165,8 @@ void ctgFreeDbCache(SCtgDBCache *dbCache) {
     }
 
     tfree(dbCache->vgInfo);
-    CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
   }
+  CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
 
   ctgFreeTableMetaCache(&dbCache->tbCache);
 }
@@ -97,22 +191,21 @@ void ctgFreeHandle(struct SCatalog* pCatalog) {
   free(pCatalog);
 }
 
-
-int32_t ctgGetDBVgroupFromCache(struct SCatalog* pCatalog, const char *dbName, SCtgDBCache **dbCache, bool *inCache) {
+int32_t ctgGetDBVgroupFromCache(struct SCatalog* pCatalog, const char *dbFName, SCtgDBCache **dbCache, bool *inCache) {
   if (NULL == pCatalog->dbCache) {
     *inCache = false;
-    ctgWarn("empty db cache, dbName:%s", dbName);
+    ctgWarn("empty db cache, dbFName:%s", dbFName);
     return TSDB_CODE_SUCCESS;
   }
 
   SCtgDBCache *cache = NULL;
 
   while (true) {
-    cache = taosHashAcquire(pCatalog->dbCache, dbName, strlen(dbName));
+    cache = taosHashAcquire(pCatalog->dbCache, dbFName, strlen(dbFName));
 
     if (NULL == cache) {
       *inCache = false;
-      ctgWarn("not in db vgroup cache, dbName:%s", dbName);
+      ctgWarn("not in db vgroup cache, dbFName:%s", dbFName);
       return TSDB_CODE_SUCCESS;
     }
 
@@ -120,7 +213,7 @@ int32_t ctgGetDBVgroupFromCache(struct SCatalog* pCatalog, const char *dbName, S
     if (NULL == cache->vgInfo) {
       CTG_UNLOCK(CTG_READ, &cache->vgLock);
       taosHashRelease(pCatalog->dbCache, cache);
-      ctgWarn("db cache vgInfo is NULL, dbName:%s", dbName);
+      ctgWarn("db cache vgInfo is NULL, dbFName:%s", dbFName);
       
       continue;
     }
@@ -131,7 +224,7 @@ int32_t ctgGetDBVgroupFromCache(struct SCatalog* pCatalog, const char *dbName, S
   *dbCache = cache;
   *inCache = true;
 
-  ctgDebug("Got db vgroup from cache, dbName:%s", dbName);
+  ctgDebug("Got db vgroup from cache, dbFName:%s", dbFName);
   
   return TSDB_CODE_SUCCESS;
 }
@@ -189,7 +282,10 @@ int32_t ctgIsTableMetaExistInCache(struct SCatalog* pCatalog, char *dbFName, cha
 
 
   size_t sz = 0;
-  STableMeta *tbMeta = taosHashGet(dbCache->tbCache.cache, tbName, strlen(tbName));
+  CTG_LOCK(CTG_READ, &dbCache->tbCache.metaLock);  
+  STableMeta *tbMeta = taosHashGet(dbCache->tbCache.metaCache, tbName, strlen(tbName));
+  CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
+  
   if (NULL == tbMeta) {
     taosHashRelease(pCatalog->dbCache, dbCache);
     
@@ -227,15 +323,18 @@ int32_t ctgGetTableMetaFromCache(struct SCatalog* pCatalog, const SName* pTableN
     return TSDB_CODE_SUCCESS;
   }
 
-  if (NULL == dbCache->tbCache.cache) {
+  if (NULL == dbCache->tbCache.metaCache) {
     *exist = 0;
     taosHashRelease(pCatalog->dbCache, dbCache);
     ctgWarn("empty tbmeta cache, dbFName:%s, tbName:%s", db, pTableName->tname);
     return TSDB_CODE_SUCCESS;
   }
   
-  size_t sz = 0;
-  STableMeta *tbMeta = taosHashGetCloneExt(dbCache->tbCache.cache, pTableName->tname, strlen(pTableName->tname), NULL, (void **)pTableMeta, &sz);
+  size_t sz = 0;  
+  CTG_LOCK(CTG_READ, &dbCache->tbCache.metaLock);
+  STableMeta *tbMeta = taosHashGetCloneExt(dbCache->tbCache.metaCache, pTableName->tname, strlen(pTableName->tname), NULL, (void **)pTableMeta, &sz);
+  CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
+
   if (NULL == *pTableMeta) {
     *exist = 0;
     taosHashRelease(pCatalog->dbCache, dbCache);
@@ -308,7 +407,10 @@ int32_t ctgGetTableTypeFromCache(struct SCatalog* pCatalog, const SName* pTableN
     return TSDB_CODE_SUCCESS;
   }
 
-  STableMeta *pTableMeta = (STableMeta *)taosHashAcquire(dbCache->tbCache.cache, pTableName->tname, strlen(pTableName->tname));
+  CTG_LOCK(CTG_READ, &dbCache->tbCache.metaLock);
+  STableMeta *pTableMeta = (STableMeta *)taosHashAcquire(dbCache->tbCache.metaCache, pTableName->tname, strlen(pTableName->tname));
+  CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
+
   if (NULL == pTableMeta) {
     ctgWarn("tbmeta not in cache, dbFName:%s, tbName:%s", dbName, pTableName->tname);  
     taosHashRelease(pCatalog->dbCache, dbCache);
@@ -318,7 +420,7 @@ int32_t ctgGetTableTypeFromCache(struct SCatalog* pCatalog, const SName* pTableN
 
   *tbType = atomic_load_8(&pTableMeta->tableType);
 
-  taosHashRelease(dbCache->tbCache.cache, dbCache);
+  taosHashRelease(dbCache->tbCache.metaCache, dbCache);
   taosHashRelease(pCatalog->dbCache, dbCache);
 
   ctgDebug("Got tbtype from cache, dbFName:%s, tbName:%s, type:%d", dbName, pTableName->tname, *tbType);  
@@ -741,74 +843,118 @@ int32_t ctgMetaRentGet(SCtgRentMgmt *mgmt, void **res, uint32_t *num, int32_t si
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t ctgAddDBCache(struct SCatalog *pCatalog, char *dbFName, SCtgDBCache *dbCache) {
+  int32_t code = 0;
+  if (taosHashPut(pCatalog->dbCache, dbFName, strlen(dbFName), dbCache, sizeof(SCtgDBCache))) {
+    ctgError("taosHashPut db to cache failed, db:%s", dbFName);
+    CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
+  }
+  
+  SDbVgVersion vgVersion = {.dbId = dbCache->dbId, .vgVersion = dbCache->vgInfo ? dbCache->vgInfo->vgVersion : -1};
+  strncpy(vgVersion.dbFName, dbFName, sizeof(vgVersion.dbFName));
+
+  ctgDebug("dbCache added, dbFName:%s, vgVersion:%d, dbId:%"PRIx64, dbFName, vgVersion.vgVersion, dbCache->dbId);
+  
+  CTG_ERR_JRET(ctgMetaRentAdd(&pCatalog->dbRent, &vgVersion, vgVersion.dbId, sizeof(SDbVgVersion)));
 
+  return TSDB_CODE_SUCCESS;
 
-int32_t ctgUpdateTableMetaCache(struct SCatalog *pCatalog, STableMetaOutput *output) {
-  int32_t code = 0;
-  SCtgDBCache *dbCache = NULL;
+_return:
 
-  if ((!CTG_IS_META_CTABLE(output->metaType)) && NULL == output->tbMeta) {
-    ctgError("no valid tbmeta got from meta rsp, dbFName:%s, tbName:%s", output->dbFName, output->tbName);
-    CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
-  }
+  ctgFreeDbCache(dbCache);
 
-  if (NULL == pCatalog->dbCache) {
-    SHashObj *cache = taosHashInit(ctgMgmt.cfg.maxDBCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
-    if (NULL == cache) {
-      ctgError("taosHashInit %d failed", CTG_DEFAULT_CACHE_DB_NUMBER);
-      CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
-    }
+  CTG_RET(code);
+}
 
-    if (NULL != atomic_val_compare_exchange_ptr(&pCatalog->dbCache, NULL, cache)) {
-      taosHashCleanup(cache);
-    }
+
+int32_t ctgUpdateTbMetaImpl(struct SCatalog *pCatalog, SCtgTbMetaCache *tbCache, char *dbFName, char *tbName, STableMeta *meta, int32_t metaSize) {
+  CTG_LOCK(CTG_READ, &tbCache->metaLock);  
+  if (taosHashPut(tbCache->metaCache, tbName, strlen(tbName), meta, metaSize) != 0) {
+    CTG_UNLOCK(CTG_READ, &tbCache->metaLock);  
+    ctgError("taosHashPut tbmeta to cache failed, dbFName:%s, tbName:%s, tbType:%d", dbFName, tbName, meta->tableType);
+    CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
+  CTG_UNLOCK(CTG_READ, &tbCache->metaLock);
+  
+  ctgDebug("tbmeta updated to cache, dbFName:%s, tbName:%s, tbType:%d", dbFName, tbName, meta->tableType);
 
-  while (true) {
-    dbCache = (SCtgDBCache *)taosHashAcquire(pCatalog->dbCache, output->dbFName, strlen(output->dbFName));
-    if (dbCache) {
-      break;
-    }
-    
-    SCtgDBCache newDbCache = {0};
+  return TSDB_CODE_SUCCESS;
+}
 
-    if (taosHashPut(pCatalog->dbCache, output->dbFName, strlen(output->dbFName), &newDbCache, sizeof(newDbCache))) {
-      ctgError("taosHashPut db to cache failed, db:%s", output->dbFName);
-      CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+int32_t ctgUpdateStbMetaImpl(struct SCatalog *pCatalog, SCtgTbMetaCache *tbCache, char *dbFName, char *tbName, STableMeta *meta, int32_t metaSize) {
+  bool newAdded = false;
+  int32_t code = 0;
+  SSTableMetaVersion metaRent = {.suid = meta->suid, .sversion = meta->sversion, .tversion = meta->tversion};
+  strcpy(metaRent.dbFName, dbFName);
+  strcpy(metaRent.stbName, tbName);
+  
+  CTG_LOCK(CTG_WRITE, &tbCache->stbLock);
+  
+  CTG_LOCK(CTG_READ, &tbCache->metaLock);
+  STableMeta *orig = taosHashAcquire(tbCache->metaCache,  tbName, strlen(tbName));
+  if (orig) {
+    if (orig->suid != meta->suid) {
+      if (taosHashRemove(tbCache->stbCache, &orig->suid, sizeof(orig->suid))) {
+        ctgError("stb not exist in stbCache, db:%s, stb:%s, suid:%"PRIx64, dbFName, tbName, orig->suid);
+      }
+      
+      ctgMetaRentRemove(&pCatalog->stbRent, orig->suid, ctgSTableVersionCompare);
     }
+  
+    taosHashRelease(tbCache->metaCache, orig);
   }
+  CTG_UNLOCK(CTG_READ, &tbCache->metaLock);    
 
-  if (NULL == dbCache->tbCache.cache) {
-    SHashObj *cache = taosHashInit(ctgMgmt.cfg.maxTblCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
-    if (NULL == cache) {
-      ctgError("taosHashInit failed, num:%d", ctgMgmt.cfg.maxTblCacheNum);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
+  CTG_ERR_JRET(ctgUpdateTbMetaImpl(pCatalog, tbCache, dbFName, tbName, meta, metaSize));
 
-    if (NULL != atomic_val_compare_exchange_ptr(&dbCache->tbCache.cache, NULL, cache)) {
-      taosHashCleanup(cache);
-    }
+  CTG_LOCK(CTG_READ, &tbCache->metaLock);  
+  STableMeta *tbMeta = taosHashGet(tbCache->metaCache, tbName, strlen(tbName));
+  if (taosHashPutExt(tbCache->stbCache, &meta->suid, sizeof(meta->suid), &tbMeta, POINTER_BYTES, &newAdded) != 0) {
+    CTG_UNLOCK(CTG_READ, &tbCache->metaLock);    
+    CTG_UNLOCK(CTG_WRITE, &tbCache->stbLock);
+    ctgError("taosHashPutExt stable to stable cache failed, suid:%"PRIx64, meta->suid);
+    CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+  }
+  CTG_UNLOCK(CTG_READ, &tbCache->metaLock);    
+  
+  CTG_UNLOCK(CTG_WRITE, &tbCache->stbLock);
+  
+  ctgDebug("update stable to cache, suid:%"PRIx64, meta->suid);
+  
+  if (newAdded) {
+    CTG_ERR_RET(ctgMetaRentAdd(&pCatalog->stbRent, &metaRent, metaRent.suid, sizeof(SSTableMetaVersion)));
+  } else {
+    CTG_ERR_RET(ctgMetaRentUpdate(&pCatalog->stbRent, &metaRent, metaRent.suid, sizeof(SSTableMetaVersion), ctgSTableVersionCompare));
   }
 
-  if (NULL == dbCache->tbCache.stbCache) {
-    SHashObj *cache = taosHashInit(ctgMgmt.cfg.maxTblCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_UBIGINT), true, HASH_ENTRY_LOCK);
-    if (NULL == cache) {
-      ctgError("taosHashInit failed, num:%d", ctgMgmt.cfg.maxTblCacheNum);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
+  return TSDB_CODE_SUCCESS;
 
-    if (NULL != atomic_val_compare_exchange_ptr(&dbCache->tbCache.stbCache, NULL, cache)) {
-      taosHashCleanup(cache);
-    }
+_return:
+
+  CTG_UNLOCK(CTG_WRITE, &tbCache->stbLock);
+
+  CTG_RET(code);
+}
+
+
+int32_t ctgUpdateTableMetaCache(struct SCatalog *pCatalog, STableMetaOutput *output) {
+  int32_t code = 0;
+  SCtgDBCache *dbCache = NULL;
+
+  if ((!CTG_IS_META_CTABLE(output->metaType)) && NULL == output->tbMeta) {
+    ctgError("no valid tbmeta got from meta rsp, dbFName:%s, tbName:%s", output->dbFName, output->tbName);
+    CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
 
-  if (CTG_IS_META_CTABLE(output->metaType) || CTG_IS_META_BOTH(output->metaType)) {
-    if (taosHashPut(dbCache->tbCache.cache, output->ctbName, strlen(output->ctbName), &output->ctbMeta, sizeof(output->ctbMeta)) != 0) {
-      ctgError("taosHashPut ctbmeta to cache failed, ctbName:%s", output->ctbName);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
+  CTG_ERR_RET(ctgInitDBCache(pCatalog));
+
+  CTG_ERR_JRET(ctgAcquireDBCache(pCatalog, output->dbFName, output->dbId, &dbCache));
+
+  CTG_ERR_JRET(ctgInitTbMetaCache(pCatalog, dbCache));
+  CTG_ERR_JRET(ctgInitStbCache(pCatalog, dbCache));
 
-    ctgDebug("ctbmeta updated to cache, ctbName:%s", output->ctbName);
+  if (CTG_IS_META_CTABLE(output->metaType) || CTG_IS_META_BOTH(output->metaType)) {
+    CTG_ERR_JRET(ctgUpdateTbMetaImpl(pCatalog, &dbCache->tbCache, output->ctbName, (STableMeta *)&output->ctbMeta, sizeof(output->ctbMeta)));
   }
 
   if (CTG_IS_META_CTABLE(output->metaType)) {
@@ -823,42 +969,11 @@ int32_t ctgUpdateTableMetaCache(struct SCatalog *pCatalog, STableMetaOutput *out
   int32_t tbSize = sizeof(*output->tbMeta) + sizeof(SSchema) * (output->tbMeta->tableInfo.numOfColumns + output->tbMeta->tableInfo.numOfTags);
 
   if (TSDB_SUPER_TABLE == output->tbMeta->tableType) {
-    bool newAdded = false;
-    SSTableMetaVersion metaRent = {.suid = output->tbMeta->suid, .sversion = output->tbMeta->sversion, .tversion = output->tbMeta->tversion};
-    strcpy(metaRent.dbFName, output->dbFName);
-    strcpy(metaRent.stbName, output->tbName);
-    
-    CTG_LOCK(CTG_WRITE, &dbCache->tbCache.stbLock);
-    if (taosHashPut(dbCache->tbCache.cache, output->tbName, strlen(output->tbName), output->tbMeta, tbSize) != 0) {
-      CTG_UNLOCK(CTG_WRITE, &dbCache->tbCache.stbLock);
-      ctgError("taosHashPut tablemeta to cache failed, dbFName:%s, tbName:%s", output->dbFName, output->tbName);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
-
-    STableMeta *tbMeta = taosHashGet(dbCache->tbCache.cache, output->tbName, strlen(output->tbName));
-    if (taosHashPutExt(dbCache->tbCache.stbCache, &output->tbMeta->suid, sizeof(output->tbMeta->suid), &tbMeta, POINTER_BYTES, &newAdded) != 0) {
-      CTG_UNLOCK(CTG_WRITE, &dbCache->tbCache.stbLock);
-      ctgError("taosHashPutExt stable to stable cache failed, suid:%"PRIx64, output->tbMeta->suid);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
-    CTG_UNLOCK(CTG_WRITE, &dbCache->tbCache.stbLock);
-
-    ctgDebug("update stable to cache, suid:%"PRIx64, output->tbMeta->suid);
-
-    if (newAdded) {
-      CTG_ERR_JRET(ctgMetaRentAdd(&pCatalog->stbRent, &metaRent, metaRent.suid, sizeof(SSTableMetaVersion)));
-    } else {
-      CTG_ERR_JRET(ctgMetaRentUpdate(&pCatalog->stbRent, &metaRent, metaRent.suid, sizeof(SSTableMetaVersion), ctgSTableVersionCompare));
-    }
+    CTG_ERR_JRET(ctgUpdateStbMetaImpl(pCatalog, &dbCache->tbCache, output->dbFName, output->tbName, output->tbMeta, tbSize));
   } else {
-    if (taosHashPut(dbCache->tbCache.cache, output->tbName, strlen(output->tbName), output->tbMeta, tbSize) != 0) {
-      ctgError("taosHashPut tablemeta to cache failed, dbFName:%s, tbName:%s", output->dbFName, output->tbName);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
+    CTG_ERR_JRET(ctgUpdateTbMetaImpl(pCatalog, &dbCache->tbCache, output->dbFName, output->tbName, output->tbMeta, tbSize));
   }
 
-  ctgDebug("update tablemeta to cache, dbFName:%s, tbName:%s", output->dbFName, output->tbName);
-
 _return:
 
   if (dbCache) {
@@ -868,30 +983,30 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgGetDBVgroup(struct SCatalog* pCatalog, void *pRpc, const SEpSet* pMgmtEps, const char* dbName, bool forceUpdate, SCtgDBCache** dbCache) {
+int32_t ctgGetDBVgroup(struct SCatalog* pCatalog, void *pRpc, const SEpSet* pMgmtEps, const char* dbFName, bool forceUpdate, SCtgDBCache** dbCache) {
   bool inCache = false;
   if (!forceUpdate) {
-    CTG_ERR_RET(ctgGetDBVgroupFromCache(pCatalog, dbName, dbCache, &inCache));
+    CTG_ERR_RET(ctgGetDBVgroupFromCache(pCatalog, dbFName, dbCache, &inCache));
     if (inCache) {
       return TSDB_CODE_SUCCESS;
     }
 
-    ctgDebug("failed to get DB vgroupInfo from cache, dbName:%s, load it from mnode, update:%d", dbName, forceUpdate);
+    ctgDebug("failed to get DB vgroupInfo from cache, dbName:%s, load it from mnode, update:%d", dbFName, forceUpdate);
   }
 
   SUseDbOutput DbOut = {0};
   SBuildUseDBInput input = {0};
 
-  tstrncpy(input.db, dbName, tListLen(input.db));
+  tstrncpy(input.db, dbFName, tListLen(input.db));
   input.vgVersion = CTG_DEFAULT_INVALID_VERSION;
 
   while (true) {
     CTG_ERR_RET(ctgGetDBVgroupFromMnode(pCatalog, pRpc, pMgmtEps, &input, &DbOut));
-    CTG_ERR_RET(catalogUpdateDBVgroup(pCatalog, dbName, DbOut.dbVgroup));
-    CTG_ERR_RET(ctgGetDBVgroupFromCache(pCatalog, dbName, dbCache, &inCache));
+    CTG_ERR_RET(catalogUpdateDBVgroup(pCatalog, dbFName, DbOut.dbVgroup));
+    CTG_ERR_RET(ctgGetDBVgroupFromCache(pCatalog, dbFName, dbCache, &inCache));
 
     if (!inCache) {
-      ctgWarn("can't get db vgroup from cache, will retry, db:%s", dbName);
+      ctgWarn("can't get db vgroup from cache, will retry, db:%s", dbFName);
       continue;
     }
 
@@ -901,58 +1016,90 @@ int32_t ctgGetDBVgroup(struct SCatalog* pCatalog, void *pRpc, const SEpSet* pMgm
   return TSDB_CODE_SUCCESS;
 }
 
+void ctgRemoveAndFreeTableMeta(struct SCatalog* pCatalog, SCtgTbMetaCache *cache) {
+  CTG_LOCK(CTG_WRITE, &cache->stbLock);
+  if (cache->stbCache) {
+    void *pIter = taosHashIterate(cache->stbCache, NULL);
+    while (pIter) {
+      uint64_t suid = 0;
+      taosHashGetKey(pIter, &suid, NULL);
 
-int32_t ctgValidateAndRemoveDb(struct SCatalog* pCatalog, const char* dbName, uint64_t dbId, bool *removed) {
-  *removed = false;
+      CTG_ERR_RET(ctgMetaRentRemove(&pCatalog->stbRent, suid, ctgSTableVersionCompare));
+      ctgDebug("stb removed from rent, suid:%"PRIx64, suid);
+          
+      pIter = taosHashIterate(cache->stbCache, pIter);
+    }
+  }
+  CTG_UNLOCK(CTG_WRITE, &cache->stbLock);
 
-  SCtgDBCache *dbCache = (SCtgDBCache *)taosHashAcquire(pCatalog->dbCache, dbName, strlen(dbName));
-  if (NULL == dbCache) {
-    ctgInfo("db not exist in dbCache, may be removed, db:%s", dbName);
-    return TSDB_CODE_SUCCESS;
+  ctgFreeTableMetaCache(cache);
+}
+
+int32_t ctgValidateAndRemoveDb(struct SCatalog* pCatalog, SCtgDBCache *dbCache, const char* dbFName) {
+  if (taosHashRemove(pCatalog->dbCache, dbFName, strlen(dbFName))) {
+    ctgError("taosHashRemove from dbCache failed, dbFName:%s", dbFName);
+    CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }
+
+  atomic_store_8(&dbCache->deleted, 1);
   
   CTG_LOCK(CTG_WRITE, &dbCache->vgLock);
-  
-  if (NULL == dbCache->vgInfo) {
-    ctgInfo("db vgInfo not in dbCache, may be removed, db:%s, dbId:%"PRIx64, dbName, dbId);
-    CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
-    taosHashRelease(pCatalog->dbCache, dbCache);
-    return TSDB_CODE_SUCCESS;
-  }
-  
-  if (dbCache->vgInfo->dbId != dbId) {
-    ctgInfo("db id already updated, db:%s, dbId:%"PRIx64 ", targetId:%"PRIx64, dbName, dbCache->vgInfo->dbId, dbId);
-    CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
-    taosHashRelease(pCatalog->dbCache, dbCache);
-    return TSDB_CODE_SUCCESS;
-  }
+  if (dbCache->vgInfo) {
+    ctgInfo("cleanup db vgInfo, dbFName:%s, dbId:%"PRIx64, dbFName, dbCache->dbId);
+    
+    if (dbCache->vgInfo->vgHash) {
+      taosHashCleanup(dbCache->vgInfo->vgHash);
+    }
     
-  if (dbCache->vgInfo->vgHash) {
-    ctgInfo("cleanup db vgInfo, db:%s, dbId:%"PRIx64, dbName, dbId);
-    taosHashCleanup(dbCache->vgInfo->vgHash);
     tfree(dbCache->vgInfo);
   }
+  CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
 
-  if (taosHashRemove(pCatalog->dbCache, dbName, strlen(dbName))) {
-    ctgError("taosHashRemove from dbCache failed, db:%s", dbName);
-    CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);      
-    taosHashRelease(pCatalog->dbCache, dbCache);
-    CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
-  }
+  ctgRemoveAndFreeTableMeta(pCatalog, &dbCache->tbCache);
+
+  ctgInfo("db removed from cache, dbFName:%s, uid:%"PRIx64, dbFName, dbCache->dbId);
 
-  dbCache->deleted = true;
+  CTG_ERR_RET(ctgMetaRentRemove(&pCatalog->dbRent, dbCache->dbId, ctgDbVgVersionCompare));
   
-  CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
+  ctgDebug("db removed from rent, dbFName:%s, uid:%"PRIx64, dbFName, dbCache->dbId);
+  
+  return TSDB_CODE_SUCCESS;
+}
 
-  ctgFreeTableMetaCache(&dbCache->tbCache);
 
-  taosHashRelease(pCatalog->dbCache, dbCache);
+int32_t ctgAcquireDBCache(struct SCatalog* pCatalog, const char *dbFName, uint64_t dbId, SCtgDBCache **pCache) {
+  int32_t code = 0;
+  SCtgDBCache *dbCache = NULL;
+  
+  while (true) {
+    dbCache = (SCtgDBCache *)taosHashAcquire(pCatalog->dbCache, dbFName, strlen(dbFName));
+    if (dbCache) {
+      if (dbCache->dbId == dbId) {
+        *pCache = dbCache;
+        return TSDB_CODE_SUCCESS;
+      }
+      
+      CTG_ERR_JRET(ctgValidateAndRemoveDb(pCatalog, dbCache, dbFName));
+      taosHashRelease(pCatalog->dbCache, dbCache);
+      dbCache = NULL;
+    }
 
-  *removed = true;
+    SCtgDBCache newDBCache = {0};
+    newDBCache.dbId = dbId;
+    
+    CTG_ERR_JRET(ctgAddDBCache(pCatalog, dbFName, &newDBCache));
+  }
+
+_return:
+
+  if (dbCache) {
+    taosHashRelease(pCatalog->dbCache, dbCache);
+  }
   
-  return TSDB_CODE_SUCCESS;
+  CTG_RET(code);
 }
 
+
 int32_t ctgValidateAndRemoveStbMeta(struct SCatalog* pCatalog, const char* dbName, const char* stbName, uint64_t suid, bool *removed) {
   *removed = false;
 
@@ -970,12 +1117,16 @@ int32_t ctgValidateAndRemoveStbMeta(struct SCatalog* pCatalog, const char* dbNam
     return TSDB_CODE_SUCCESS;
   }
 
-  if (taosHashRemove(dbCache->tbCache.cache, stbName, strlen(stbName))) {
+  CTG_LOCK(CTG_READ, &dbCache->tbCache.metaLock);
+  if (taosHashRemove(dbCache->tbCache.metaCache, stbName, strlen(stbName))) {  
+    CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
     CTG_UNLOCK(CTG_WRITE, &dbCache->tbCache.stbLock);
     taosHashRelease(pCatalog->dbCache, dbCache);
     ctgError("stb not exist in cache, db:%s, stb:%s, suid:%"PRIx64, dbName, stbName, suid);
     CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
-  }
+  }  
+  CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
+  
   CTG_UNLOCK(CTG_WRITE, &dbCache->tbCache.stbLock);
   
   taosHashRelease(pCatalog->dbCache, dbCache);
@@ -1255,7 +1406,7 @@ int32_t catalogGetDBVgroupVersion(struct SCatalog* pCatalog, const char* dbName,
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t catalogGetDBVgroup(struct SCatalog* pCatalog, void *pRpc, const SEpSet* pMgmtEps, const char* dbName, bool forceUpdate, SArray** vgroupList) {
+int32_t catalogGetDBVgroup(struct SCatalog* pCatalog, void *pRpc, const SEpSet* pMgmtEps, const char* dbFName, bool forceUpdate, SArray** vgroupList) {
   if (NULL == pCatalog || NULL == dbName || NULL == pRpc || NULL == pMgmtEps || NULL == vgroupList) {
     CTG_ERR_RET(TSDB_CODE_CTG_INVALID_INPUT);
   }
@@ -1265,7 +1416,7 @@ int32_t catalogGetDBVgroup(struct SCatalog* pCatalog, void *pRpc, const SEpSet*
 
   int32_t code = 0;
   SArray *vgList = NULL;
-  CTG_ERR_JRET(ctgGetDBVgroup(pCatalog, pRpc, pMgmtEps, dbName, forceUpdate, &dbCache));
+  CTG_ERR_JRET(ctgGetDBVgroup(pCatalog, pRpc, pMgmtEps, dbFName, forceUpdate, &dbCache));
 
   int32_t vgNum = (int32_t)taosHashGetSize(dbCache->vgInfo->vgHash);
   vgList = taosArrayInit(vgNum, sizeof(SVgroupInfo));
@@ -1307,89 +1458,64 @@ _return:
 }
 
 
-int32_t catalogUpdateDBVgroup(struct SCatalog* pCatalog, const char* dbName, SDBVgroupInfo* dbInfo) {
+int32_t catalogUpdateDBVgroup(struct SCatalog* pCatalog, const char* dbFName, uint64_t dbId, SDBVgroupInfo* dbInfo) {
   int32_t code = 0;
   
-  if (NULL == pCatalog || NULL == dbName || NULL == dbInfo) {
+  if (NULL == pCatalog || NULL == dbFName || NULL == dbInfo) {
     CTG_ERR_JRET(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
   if (NULL == dbInfo->vgHash || dbInfo->vgVersion < 0 || taosHashGetSize(dbInfo->vgHash) <= 0) {
-    ctgError("invalid db vgInfo, dbName:%s, vgHash:%p, vgVersion:%d", dbName, dbInfo->vgHash, dbInfo->vgVersion);
+    ctgError("invalid db vgInfo, dbFName:%s, vgHash:%p, vgVersion:%d", dbFName, dbInfo->vgHash, dbInfo->vgVersion);
     CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
-  if (NULL == pCatalog->dbCache) {
-    SHashObj *cache = taosHashInit(ctgMgmt.cfg.maxDBCacheNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_ENTRY_LOCK);
-    if (NULL == cache) {
-      ctgError("taosHashInit %d failed", CTG_DEFAULT_CACHE_DB_NUMBER);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
-    }
-
-    if (NULL != atomic_val_compare_exchange_ptr(&pCatalog->dbCache, NULL, cache)) {
-      taosHashCleanup(cache);
-    }
-  }
+  CTG_ERR_JRET(ctgInitDBCache(pCatalog));
 
   bool newAdded = false;
-  SDbVgVersion vgVersion = {.dbId = dbInfo->dbId, .vgVersion = dbInfo->vgVersion};
-
-  SCtgDBCache *dbCache = (SCtgDBCache *)taosHashAcquire(pCatalog->dbCache, dbName, strlen(dbName));
-  if (dbCache) {
-    CTG_LOCK(CTG_WRITE, &dbCache->vgLock);
-    
-    if (NULL == dbCache->vgInfo) {
-      newAdded = true;
-
-      dbCache->vgInfo = dbInfo;
-    } else {
-      if (dbCache->vgInfo->dbId != dbInfo->dbId) {
-        ctgMetaRentRemove(&pCatalog->dbRent, dbCache->vgInfo->dbId, ctgDbVgVersionCompare);
-        newAdded = true;
-      } else if (dbInfo->vgVersion <= dbCache->vgInfo->vgVersion) {
-        ctgInfo("db vgVersion is old, db:%s, vgVersion:%d, current:%d", dbName, dbInfo->vgVersion, dbCache->vgInfo->vgVersion);
-        CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
-        taosHashRelease(pCatalog->dbCache, dbCache);
-        
-        goto _return;
-      }
-      
-      if (dbCache->vgInfo->vgHash) {
-        ctgInfo("cleanup db vgHash, db:%s", dbName);
-        taosHashCleanup(dbCache->vgInfo->vgHash);
-        dbCache->vgInfo->vgHash = NULL;
-      }
-
-      tfree(dbCache->vgInfo);
-      dbCache->vgInfo = dbInfo;
-    }
+  SDbVgVersion vgVersion = {.dbId = dbId, .vgVersion = dbInfo->vgVersion};
 
+  SCtgDBCache *dbCache = NULL;
+  CTG_ERR_JRET(ctgAcquireDBCache(pCatalog, dbFName, dbId, &dbCache));
+  
+  CTG_LOCK(CTG_WRITE, &dbCache->vgLock);
+  if (dbCache->deleted) {
+    ctgInfo("db is dropping, dbFName:%s, dbId:%"PRIx64, dbFName, dbInfo->dbId);
     CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
     taosHashRelease(pCatalog->dbCache, dbCache);
+    CTG_ERR_JRET(TSDB_CODE_CTG_DB_DROPPED);
+  }
+  
+  if (NULL == dbCache->vgInfo) {
+    dbCache->vgInfo = dbInfo;
   } else {
-    SCtgDBCache newDBCache = {0};
-    newDBCache.vgInfo = dbInfo;
+    if (dbInfo->vgVersion <= dbCache->vgInfo->vgVersion) {
+      ctgInfo("db vgVersion is old, dbFName:%s, vgVersion:%d, current:%d", dbFName, dbInfo->vgVersion, dbCache->vgInfo->vgVersion);
+      CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
+      taosHashRelease(pCatalog->dbCache, dbCache);
+      
+      goto _return;
+    }
     
-    if (taosHashPut(pCatalog->dbCache, dbName, strlen(dbName), &newDBCache, sizeof(newDBCache)) != 0) {
-      ctgError("taosHashPut db & db vgroup to cache failed, db:%s", dbName);
-      CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
+    if (dbCache->vgInfo->vgHash) {
+      ctgInfo("cleanup db vgHash, dbFName:%s", dbFName);
+      taosHashCleanup(dbCache->vgInfo->vgHash);
+      dbCache->vgInfo->vgHash = NULL;
     }
 
-    newAdded = true;
+    tfree(dbCache->vgInfo);
+    dbCache->vgInfo = dbInfo;
   }
 
   dbInfo = NULL;
 
-  strncpy(vgVersion.dbFName, dbName, sizeof(vgVersion.dbFName));
-  
-  if (newAdded) {
-    CTG_ERR_JRET(ctgMetaRentAdd(&pCatalog->dbRent, &vgVersion, vgVersion.dbId, sizeof(SDbVgVersion)));
-  } else {
-    CTG_ERR_JRET(ctgMetaRentUpdate(&pCatalog->dbRent, &vgVersion, vgVersion.dbId, sizeof(SDbVgVersion), ctgDbVgVersionCompare));
-  }
-  
-  ctgDebug("dbName:%s vgroup updated, vgVersion:%d", dbName, vgVersion.vgVersion);
+  CTG_UNLOCK(CTG_WRITE, &dbCache->vgLock);
+  taosHashRelease(pCatalog->dbCache, dbCache);
+
+  strncpy(vgVersion.dbFName, dbFName, sizeof(vgVersion.dbFName));
+  CTG_ERR_JRET(ctgMetaRentUpdate(&pCatalog->dbRent, &vgVersion, vgVersion.dbId, sizeof(SDbVgVersion), ctgDbVgVersionCompare));
 
+  ctgDebug("dbCache updated, dbFName:%s, vgVersion:%d, dbId:%"PRIx64, dbFName, vgVersion.vgVersion, vgVersion.dbId);
 
 _return:
 
@@ -1403,29 +1529,34 @@ _return:
 }
 
 
-int32_t catalogRemoveDB(struct SCatalog* pCatalog, const char* dbName, uint64_t dbId) {
+int32_t catalogRemoveDB(struct SCatalog* pCatalog, const char* dbFName, uint64_t dbId) {
   int32_t code = 0;
-  bool removed = false;
   
-  if (NULL == pCatalog || NULL == dbName) {
+  if (NULL == pCatalog || NULL == dbFName) {
     CTG_ERR_RET(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
   if (NULL == pCatalog->dbCache) {
     return TSDB_CODE_SUCCESS;
   }
-  
-  CTG_ERR_RET(ctgValidateAndRemoveDb(pCatalog, dbName, dbId, &removed));
-  if (!removed) {
+
+  SCtgDBCache *dbCache = (SCtgDBCache *)taosHashAcquire(pCatalog->dbCache, dbFName, strlen(dbFName));
+  if (NULL == dbCache) {
+    ctgInfo("db not exist in dbCache, may be removed, dbFName:%s", dbFName);
     return TSDB_CODE_SUCCESS;
   }
-  
-  ctgInfo("db removed from cache, db:%s, uid:%"PRIx64, dbName, dbId);
 
-  CTG_ERR_RET(ctgMetaRentRemove(&pCatalog->dbRent, dbId, ctgDbVgVersionCompare));
+  if (dbCache->dbId != dbId) {
+    ctgInfo("db id already updated, dbFName:%s, dbId:%"PRIx64 ", targetId:%"PRIx64, dbFName, dbCache->dbId, dbId);
+    return TSDB_CODE_SUCCESS;
+  }
   
-  ctgDebug("db removed from rent, db:%s, uid:%"PRIx64, dbName, dbId);
+  CTG_ERR_JRET(ctgValidateAndRemoveDb(pCatalog, dbCache, dbFName));
+
+_return:
   
+  taosHashRelease(pCatalog->dbCache, dbCache);
+
   CTG_RET(code);
 }
 
@@ -1464,6 +1595,27 @@ int32_t catalogGetSTableMeta(struct SCatalog* pCatalog, void * pTransporter, con
   return ctgGetTableMeta(pCatalog, pTransporter, pMgmtEps, pTableName, false, pTableMeta, 1);
 }
 
+int32_t catalogUpdateSTableMeta(struct SCatalog* pCatalog, STableMetaRsp *rspMsg) {
+  STableMetaOutput output = {0};
+  int32_t code = 0;
+
+  strcpy(output.dbFName, rspMsg->dbFName);
+  strcpy(output.tbName, rspMsg->tbName);
+  
+  SET_META_TYPE_TABLE(output.metaType);
+  
+  CTG_ERR_RET(queryCreateTableMetaFromMsg(rspMsg, true, &output.tbMeta));
+
+  CTG_ERR_JRET(ctgUpdateTableMetaCache(pCatalog, &output));
+
+_return:
+
+  tfree(output.tbMeta);
+  
+  CTG_RET(code);
+}
+
+
 int32_t catalogRenewTableMeta(struct SCatalog* pCatalog, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, int32_t isSTable) {
   if (NULL == pCatalog || NULL == pTransporter || NULL == pMgmtEps || NULL == pTableName) {
     CTG_ERR_RET(TSDB_CODE_CTG_INVALID_INPUT);

source/libs/catalog/test/catalogTests.cpp

@@ -185,7 +185,6 @@ void ctgTestBuildDBVgroup(SDBVgroupInfo **pdbVgroup) {
   ctgTestCurrentVgVersion = dbVgroup->vgVersion;
 
   dbVgroup->hashMethod = 0;
-  dbVgroup->dbId = ctgTestDbId;
   dbVgroup->vgHash = taosHashInit(ctgTestVgNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_ENTRY_LOCK);
 
   vgNum = ctgTestGetVgNumFromVgVersion(dbVgroup->vgVersion);
@@ -600,7 +599,7 @@ void *ctgTestSetDbVgroupThread(void *param) {
 
   while (!ctgTestStop) {
     ctgTestBuildDBVgroup(&dbVgroup);
-    code = catalogUpdateDBVgroup(pCtg, ctgTestDbname, dbVgroup);
+    code = catalogUpdateDBVgroup(pCtg, ctgTestDbname, ctgTestDbId, dbVgroup);
     if (code) {
       assert(0);
     }
@@ -1109,7 +1108,7 @@ TEST(dbVgroup, getSetDbVgroupCase) {
   taosArrayDestroy(vgList);
 
   ctgTestBuildDBVgroup(&dbVgroup);
-  code = catalogUpdateDBVgroup(pCtg, ctgTestDbname, dbVgroup);
+  code = catalogUpdateDBVgroup(pCtg, ctgTestDbname, ctgTestDbId, dbVgroup);
   ASSERT_EQ(code, 0);
 
   code = catalogGetTableHashVgroup(pCtg, mockPointer, (const SEpSet *)mockPointer, &n, &vgInfo);

source/libs/qcom/src/querymsg.c

@@ -119,9 +119,9 @@ int32_t queryProcessUseDBRsp(void* output, char *msg, int32_t msgSize) {
     return TSDB_CODE_TSC_OUT_OF_MEMORY;
   }
 
+  pOut->dbId = pRsp->uid;
   pOut->dbVgroup->vgVersion = pRsp->vgVersion;
   pOut->dbVgroup->hashMethod = pRsp->hashMethod;
-  pOut->dbVgroup->dbId = pRsp->uid;
   pOut->dbVgroup->vgHash = taosHashInit(pRsp->vgNum, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_ENTRY_LOCK);
   if (NULL == pOut->dbVgroup->vgHash) {
     qError("taosHashInit %d failed", pRsp->vgNum);

source/util/src/terror.c

@@ -418,6 +418,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_CTG_INVALID_INPUT,            "invalid catalog input
 TAOS_DEFINE_ERROR(TSDB_CODE_CTG_NOT_READY,                "catalog is not ready")
 TAOS_DEFINE_ERROR(TSDB_CODE_CTG_MEM_ERROR,                "catalog memory error")
 TAOS_DEFINE_ERROR(TSDB_CODE_CTG_SYS_ERROR,                "catalog system error")
+TAOS_DEFINE_ERROR(TSDB_CODE_CTG_DB_DROPPED,               "Database is dropped")
 
 //scheduler
 TAOS_DEFINE_ERROR(TSDB_CODE_SCH_STATUS_ERROR,             "scheduler status error")