Merge pull request #13471 from taosdata/feature/qnode

feat: add force update option for catalog updating

include/common/tmsg.h

@@ -1982,6 +1982,7 @@ typedef struct {
 
 typedef struct {
   SClientHbKey      connKey;
+  int64_t           clusterId;
   SQueryHbReqBasic* query;
   SHashObj*         info;  // hash<Skv.key, Skv>
 } SClientHbReq;

include/libs/catalog/catalog.h

@@ -68,6 +68,7 @@ typedef struct SCatalogReq {
   SArray *pIndex;         // element is index name
   SArray *pUser;          // element is SUserAuthInfo
   bool    qNodeRequired;  // valid qnode
+  bool    forceUpdate;    
 } SCatalogReq;
 
 typedef struct SMetaData {
@@ -280,7 +281,7 @@ int32_t catalogUpdateUserAuthInfo(SCatalog* pCtg, SGetUserAuthRsp* pAuth);
 int32_t catalogUpdateVgEpSet(SCatalog* pCtg, const char* dbFName, int32_t vgId, SEpSet *epSet);
 
 
-int32_t ctgdLaunchAsyncCall(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, uint64_t reqId);
+int32_t ctgdLaunchAsyncCall(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, uint64_t reqId, bool forceUpdate);
 
 
 /**

include/libs/qcom/query.h

@@ -222,7 +222,7 @@ extern int32_t (*queryProcessMsgRsp[TDMT_MAX])(void* output, char* msg, int32_t
   || (_type) == TDMT_VND_DROP_TABLE || (_type) == TDMT_VND_DROP_STB)
 
 #define NEED_SCHEDULER_RETRY_ERROR(_code) \
-  ((_code) == TSDB_CODE_RPC_REDIRECT || (_code) == TSDB_CODE_RPC_NETWORK_UNAVAIL)
+  ((_code) == TSDB_CODE_RPC_REDIRECT || (_code) == TSDB_CODE_RPC_NETWORK_UNAVAIL || (_code) == TSDB_CODE_SCH_TIMEOUT_ERROR)
 
 #define REQUEST_MAX_TRY_TIMES 1
 

include/libs/scheduler/scheduler.h

@@ -104,6 +104,8 @@ void schedulerAsyncFetchRows(int64_t job, schedulerFetchCallback fp, void* param
 
 int32_t schedulerGetTasksStatus(int64_t job, SArray *pSub);
 
+void schedulerStopQueryHb(void *pTrans);
+
 
 /**
  * Cancel query job

source/client/inc/clientInt.h

@@ -57,11 +57,6 @@ enum {
 
 typedef struct SAppInstInfo SAppInstInfo;
 
-typedef struct {
-  void*         param;
-  SClientHbReq* req;
-} SHbConnInfo;
-
 typedef struct {
   char* key;
   // statistics
@@ -71,11 +66,8 @@ typedef struct {
   int64_t startTime;
   // ctl
   SRWLatch lock;  // lock is used in serialization
-  // connection
   SAppInstInfo* pAppInstInfo;
-  // info
   SHashObj* activeInfo;  // hash<SClientHbKey, SClientHbReq>
-  SHashObj* connInfo;    // hash<SClientHbKey, SHbConnInfo>
 } SAppHbMgr;
 
 typedef int32_t (*FHbRspHandle)(SAppHbMgr* pAppHbMgr, SClientHbRsp* pRsp);
@@ -325,8 +317,6 @@ void       appHbMgrCleanup(void);
 int  hbRegisterConn(SAppHbMgr* pAppHbMgr, int64_t tscRefId, int64_t clusterId, int8_t connType);
 void hbDeregisterConn(SAppHbMgr* pAppHbMgr, SClientHbKey connKey);
 
-int hbAddConnInfo(SAppHbMgr* pAppHbMgr, SClientHbKey connKey, void* key, void* value, int32_t keyLen, int32_t valueLen);
-
 // --- mq
 void hbMgrInitMqHbRspHandle();
 

source/client/src/clientEnv.c

@@ -130,8 +130,13 @@ void destroyTscObj(void *pObj) {
 
   SClientHbKey connKey = {.tscRid = pTscObj->id, .connType = pTscObj->connType};
   hbDeregisterConn(pTscObj->pAppInfo->pAppHbMgr, connKey);
-  atomic_sub_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
+  int64_t connNum = atomic_sub_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
   closeAllRequests(pTscObj->pRequests);
+  schedulerStopQueryHb(pTscObj->pAppInfo->pTransporter);
+  if (0 == connNum) {
+    // TODO 
+    //closeTransporter(pTscObj);
+  }
   tscDebug("connObj 0x%" PRIx64 " destroyed, totalConn:%" PRId64, pTscObj->id, pTscObj->pAppInfo->numOfConns);
   taosThreadMutexDestroy(&pTscObj->mutex);
   taosMemoryFreeClear(pTscObj);
@@ -223,6 +228,10 @@ static void doDestroyRequest(void *p) {
 
   taosHashRemove(pRequest->pTscObj->pRequests, &pRequest->self, sizeof(pRequest->self));
 
+  if (pRequest->body.queryJob != 0) {
+    schedulerFreeJob(pRequest->body.queryJob);
+  }
+
   taosMemoryFreeClear(pRequest->msgBuf);
   taosMemoryFreeClear(pRequest->sqlstr);
   taosMemoryFreeClear(pRequest->pDb);
@@ -230,10 +239,6 @@ static void doDestroyRequest(void *p) {
   doFreeReqResultInfo(&pRequest->body.resInfo);
   qDestroyQueryPlan(pRequest->body.pDag);
 
-  if (pRequest->body.queryJob != 0) {
-    schedulerFreeJob(pRequest->body.queryJob);
-  }
-
   taosArrayDestroy(pRequest->tableList);
   taosArrayDestroy(pRequest->dbList);
 

source/client/src/clientHb.c

@@ -129,9 +129,9 @@ static int32_t hbProcessStbInfoRsp(void *value, int32_t valueLen, struct SCatalo
 }
 
 static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
-  SHbConnInfo *info = taosHashGet(pAppHbMgr->connInfo, &pRsp->connKey, sizeof(SClientHbKey));
-  if (NULL == info) {
-    tscWarn("fail to get connInfo, may be dropped, refId:%" PRIx64 ", type:%d", pRsp->connKey.tscRid,
+  SClientHbReq *pReq = taosHashGet(pAppHbMgr->activeInfo, &pRsp->connKey, sizeof(SClientHbKey));
+  if (NULL == pReq) {
+    tscWarn("pReq to get activeInfo, may be dropped, refId:%" PRIx64 ", type:%d", pRsp->connKey.tscRid,
             pRsp->connKey.connType);
     return TSDB_CODE_SUCCESS;
   }
@@ -181,12 +181,11 @@ static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
           break;
         }
 
-        int64_t         *clusterId = (int64_t *)info->param;
         struct SCatalog *pCatalog = NULL;
 
-        int32_t code = catalogGetHandle(*clusterId, &pCatalog);
+        int32_t code = catalogGetHandle(pReq->clusterId, &pCatalog);
         if (code != TSDB_CODE_SUCCESS) {
-          tscWarn("catalogGetHandle failed, clusterId:%" PRIx64 ", error:%s", *clusterId, tstrerror(code));
+          tscWarn("catalogGetHandle failed, clusterId:%" PRIx64 ", error:%s", pReq->clusterId, tstrerror(code));
           break;
         }
 
@@ -199,12 +198,11 @@ static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
           break;
         }
 
-        int64_t         *clusterId = (int64_t *)info->param;
         struct SCatalog *pCatalog = NULL;
 
-        int32_t code = catalogGetHandle(*clusterId, &pCatalog);
+        int32_t code = catalogGetHandle(pReq->clusterId, &pCatalog);
         if (code != TSDB_CODE_SUCCESS) {
-          tscWarn("catalogGetHandle failed, clusterId:%" PRIx64 ", error:%s", *clusterId, tstrerror(code));
+          tscWarn("catalogGetHandle failed, clusterId:%" PRIx64 ", error:%s", pReq->clusterId, tstrerror(code));
           break;
         }
 
@@ -217,12 +215,11 @@ static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
           break;
         }
 
-        int64_t         *clusterId = (int64_t *)info->param;
         struct SCatalog *pCatalog = NULL;
 
-        int32_t code = catalogGetHandle(*clusterId, &pCatalog);
+        int32_t code = catalogGetHandle(pReq->clusterId, &pCatalog);
         if (code != TSDB_CODE_SUCCESS) {
-          tscWarn("catalogGetHandle failed, clusterId:%" PRIx64 ", error:%s", *clusterId, tstrerror(code));
+          tscWarn("catalogGetHandle failed, clusterId:%" PRIx64 ", error:%s", pReq->clusterId, tstrerror(code));
           break;
         }
 
@@ -547,13 +544,10 @@ SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
 
     pOneReq = taosArrayPush(pBatchReq->reqs, pOneReq);
 
-    SHbConnInfo *info = taosHashGet(pAppHbMgr->connInfo, &pOneReq->connKey, sizeof(SClientHbKey));
-    if (info) {
-      code = (*clientHbMgr.reqHandle[pOneReq->connKey.connType])(&pOneReq->connKey, info->param, pOneReq);
-      if (code) {
-        pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
-        continue;
-      }
+    code = (*clientHbMgr.reqHandle[pOneReq->connKey.connType])(&pOneReq->connKey, &pOneReq->clusterId, pOneReq);
+    if (code) {
+      pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
+      continue;
     }
 
     //hbClearClientHbReq(pOneReq);
@@ -569,23 +563,6 @@ SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
   return pBatchReq;
 }
 
-void hbClearReqInfo(SAppHbMgr *pAppHbMgr) {
-  void *pIter = taosHashIterate(pAppHbMgr->activeInfo, NULL);
-  while (pIter != NULL) {
-    SClientHbReq *pOneReq = pIter;
-
-    tFreeReqKvHash(pOneReq->info);
-    taosHashClear(pOneReq->info);
-
-    if (pOneReq->query) {
-      taosArrayDestroy(pOneReq->query->queryDesc);
-      taosMemoryFreeClear(pOneReq->query);
-    }
-
-    pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
-  }
-}
-
 void hbThreadFuncUnexpectedStopped(void) {
   atomic_store_8(&clientHbMgr.threadStop, 2);
 }
@@ -715,14 +692,6 @@ SAppHbMgr *appHbMgrInit(SAppInstInfo *pAppInstInfo, char *key) {
   }
 
   taosHashSetFreeFp(pAppHbMgr->activeInfo, tFreeClientHbReq);
-  // init getInfoFunc
-  pAppHbMgr->connInfo = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
-
-  if (pAppHbMgr->connInfo == NULL) {
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    taosMemoryFree(pAppHbMgr);
-    return NULL;
-  }
 
   taosThreadMutexLock(&clientHbMgr.lock);
   taosArrayPush(clientHbMgr.appHbMgrs, &pAppHbMgr);
@@ -745,15 +714,6 @@ void appHbMgrCleanup(void) {
     taosHashCleanup(pTarget->activeInfo);
     pTarget->activeInfo = NULL;
 
-    pIter = taosHashIterate(pTarget->connInfo, NULL);
-    while (pIter != NULL) {
-      SHbConnInfo *info = pIter;
-      taosMemoryFree(info->param);
-      pIter = taosHashIterate(pTarget->connInfo, pIter);
-    }
-    taosHashCleanup(pTarget->connInfo);
-    pTarget->connInfo = NULL;
-
     taosMemoryFree(pTarget->key);
     taosMemoryFree(pTarget);
   }
@@ -791,7 +751,7 @@ void hbMgrCleanUp() {
   clientHbMgr.appHbMgrs = NULL;
 }
 
-int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, SHbConnInfo *info) {
+int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, int64_t clusterId) {
   // init hash in activeinfo
   void *data = taosHashGet(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey));
   if (data != NULL) {
@@ -799,17 +759,11 @@ int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, SHbConnInfo *
   }
   SClientHbReq hbReq = {0};
   hbReq.connKey = connKey;
+  hbReq.clusterId = clusterId;
   //hbReq.info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
 
   taosHashPut(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey), &hbReq, sizeof(SClientHbReq));
 
-  // init hash
-  if (info != NULL) {
-    SClientHbReq *pReq = taosHashGet(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey));
-    info->req = pReq;
-    taosHashPut(pAppHbMgr->connInfo, &connKey, sizeof(SClientHbKey), info, sizeof(SHbConnInfo));
-  }
-
   atomic_add_fetch_32(&pAppHbMgr->connKeyCnt, 1);
   return 0;
 }
@@ -819,15 +773,10 @@ int hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, in
       .tscRid = tscRefId,
       .connType = connType,
   };
-  SHbConnInfo info = {0};
 
   switch (connType) {
     case CONN_TYPE__QUERY: {
-      int64_t *pClusterId = taosMemoryMalloc(sizeof(int64_t));
-      *pClusterId = clusterId;
-
-      info.param = pClusterId;
-      return hbRegisterConnImpl(pAppHbMgr, connKey, &info);
+      return hbRegisterConnImpl(pAppHbMgr, connKey, clusterId);
     }
     case CONN_TYPE__TMQ: {
       return 0;
@@ -844,26 +793,10 @@ void hbDeregisterConn(SAppHbMgr *pAppHbMgr, SClientHbKey connKey) {
     taosHashRemove(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey));
   }
 
-  SHbConnInfo *info = taosHashGet(pAppHbMgr->connInfo, &connKey, sizeof(SClientHbKey));
-  if (info) {
-    taosMemoryFree(info->param);
-    taosHashRemove(pAppHbMgr->connInfo, &connKey, sizeof(SClientHbKey));
-  }
-
-  if (NULL == pReq || NULL == info) {
+  if (NULL == pReq) {
     return;
   }
 
   atomic_sub_fetch_32(&pAppHbMgr->connKeyCnt, 1);
 }
 
-int hbAddConnInfo(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, void *key, void *value, int32_t keyLen,
-                  int32_t valueLen) {
-  // find req by connection id
-  SClientHbReq *pReq = taosHashGet(pAppHbMgr->activeInfo, &connKey, sizeof(SClientHbKey));
-  ASSERT(pReq != NULL);
-
-  taosHashPut(pReq->info, key, keyLen, value, valueLen);
-
-  return 0;
-}

source/client/src/clientMsgHandler.c

@@ -180,7 +180,7 @@ int32_t processUseDbRsp(void* param, const SDataBuf* pMsg, int32_t code) {
     taosMemoryFreeClear(output.dbVgroup);
 
     tscError("0x%" PRIx64 " failed to build use db output since %s", pRequest->requestId, terrstr());
-  } else if (output.dbVgroup) {
+  } else if (output.dbVgroup && output.dbVgroup->vgHash) {
     struct SCatalog* pCatalog = NULL;
 
     int32_t code1 = catalogGetHandle(pRequest->pTscObj->pAppInfo->clusterId, &pCatalog);

source/client/src/clientSml.c

@@ -2332,6 +2332,8 @@ static int32_t isSchemalessDb(SSmlHandle* info){
     smlBuildInvalidDataMsg(&info->msgBuf, "catalogGetDBCfg error, code:", tstrerror(code));
     return code;
   }
+  taosArrayDestroy(pInfo.pRetensions);
+  
   if (!pInfo.schemaless){
     info->pRequest->code = TSDB_CODE_SML_INVALID_DB_CONF;
     smlBuildInvalidDataMsg(&info->msgBuf, "can not insert into schemaless db:", dbFname);

source/libs/catalog/inc/catalogInt.h

@@ -52,6 +52,7 @@ enum {
   CTG_OP_UPDATE_VGROUP = 0,
   CTG_OP_UPDATE_TB_META,
   CTG_OP_DROP_DB_CACHE,
+  CTG_OP_DROP_DB_VGROUP,
   CTG_OP_DROP_STB_META,
   CTG_OP_DROP_TB_META,
   CTG_OP_UPDATE_USER,
@@ -266,26 +267,32 @@ typedef struct SCtgUpdateTblMsg {
   STableMetaOutput* output;
 } SCtgUpdateTblMsg;
 
-typedef struct SCtgRemoveDBMsg {
+typedef struct SCtgDropDBMsg {
   SCatalog* pCtg;
   char  dbFName[TSDB_DB_FNAME_LEN];
   uint64_t dbId;
-} SCtgRemoveDBMsg;
+} SCtgDropDBMsg;
 
-typedef struct SCtgRemoveStbMsg {
+typedef struct SCtgDropDbVgroupMsg {
+  SCatalog* pCtg;
+  char  dbFName[TSDB_DB_FNAME_LEN];
+} SCtgDropDbVgroupMsg;
+
+
+typedef struct SCtgDropStbMetaMsg {
   SCatalog* pCtg;
   char  dbFName[TSDB_DB_FNAME_LEN];
   char  stbName[TSDB_TABLE_NAME_LEN];
   uint64_t dbId;
   uint64_t suid;
-} SCtgRemoveStbMsg;
+} SCtgDropStbMetaMsg;
 
-typedef struct SCtgRemoveTblMsg {
+typedef struct SCtgDropTblMetaMsg {
   SCatalog* pCtg;
   char  dbFName[TSDB_DB_FNAME_LEN];
   char  tbName[TSDB_TABLE_NAME_LEN];
   uint64_t dbId;
-} SCtgRemoveTblMsg;
+} SCtgDropTblMetaMsg;
 
 typedef struct SCtgUpdateUserMsg {
   SCatalog* pCtg;
@@ -451,6 +458,7 @@ int32_t ctgGetTbMetaFromCache(CTG_PARAMS, SCtgTbMetaCtx* ctx, STableMeta** pTabl
 int32_t ctgOpUpdateVgroup(SCtgCacheOperation *action);
 int32_t ctgOpUpdateTbMeta(SCtgCacheOperation *action);
 int32_t ctgOpDropDbCache(SCtgCacheOperation *action);
+int32_t ctgOpDropDbVgroup(SCtgCacheOperation *action);
 int32_t ctgOpDropStbMeta(SCtgCacheOperation *action);
 int32_t ctgOpDropTbMeta(SCtgCacheOperation *action);
 int32_t ctgOpUpdateUser(SCtgCacheOperation *action);
@@ -464,6 +472,7 @@ int32_t ctgReadTbMetaFromCache(SCatalog* pCtg, SCtgTbMetaCtx* ctx, STableMeta**
 int32_t ctgReadTbVerFromCache(SCatalog *pCtg, const SName *pTableName, int32_t *sver, int32_t *tver, int32_t *tbType, uint64_t *suid, char *stbName);
 int32_t ctgChkAuthFromCache(SCatalog* pCtg, const char* user, const char* dbFName, AUTH_TYPE type, bool *inCache, bool *pass);
 int32_t ctgDropDbCacheEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId);
+int32_t ctgDropDbVgroupEnqueue(SCatalog* pCtg, const char *dbFName, bool syncReq);
 int32_t ctgDropStbMetaEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *stbName, uint64_t suid, bool syncReq);
 int32_t ctgDropTbMetaEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *tbName, bool syncReq);
 int32_t ctgUpdateVgroupEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, SDBVgInfo* dbInfo, bool syncReq);

source/libs/catalog/src/ctgAsync.c

@@ -286,6 +286,9 @@ int32_t ctgInitJob(CTG_PARAMS, SCtgJob** job, uint64_t reqId, const SCatalogReq*
   int32_t taskIdx = 0;
   for (int32_t i = 0; i < dbVgNum; ++i) {
     char* dbFName = taosArrayGet(pReq->pDbVgroup, i);
+    if (pReq->forceUpdate) {
+      ctgDropDbVgroupEnqueue(pCtg, dbFName, true);
+    }
     CTG_ERR_JRET(ctgInitGetDbVgTask(pJob, taskIdx++, dbFName));
   }
 
@@ -301,6 +304,9 @@ int32_t ctgInitJob(CTG_PARAMS, SCtgJob** job, uint64_t reqId, const SCatalogReq*
 
   for (int32_t i = 0; i < tbMetaNum; ++i) {
     SName* name = taosArrayGet(pReq->pTableMeta, i);
+    if (pReq->forceUpdate) {
+      catalogRemoveTableMeta(pCtg, name);
+    }
     CTG_ERR_JRET(ctgInitGetTbMetaTask(pJob, taskIdx++, name));
   }
 

source/libs/catalog/src/ctgCache.c

@@ -35,6 +35,11 @@ SCtgOperation gCtgCacheOperation[CTG_OP_MAX] = {
     "drop DB",
     ctgOpDropDbCache
   },
+  {
+    CTG_OP_DROP_DB_VGROUP,
+    "drop DBVgroup",
+    ctgOpDropDbVgroup
+  },
   {
     CTG_OP_DROP_STB_META,
     "drop stbMeta",
@@ -563,9 +568,9 @@ int32_t ctgEnqueue(SCatalog* pCtg, SCtgCacheOperation *operation) {
 int32_t ctgDropDbCacheEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId) {
   int32_t code = 0;
   SCtgCacheOperation action= {.opId = CTG_OP_DROP_DB_CACHE};
-  SCtgRemoveDBMsg *msg = taosMemoryMalloc(sizeof(SCtgRemoveDBMsg));
+  SCtgDropDBMsg *msg = taosMemoryMalloc(sizeof(SCtgDropDBMsg));
   if (NULL == msg) {
-    ctgError("malloc %d failed", (int32_t)sizeof(SCtgRemoveDBMsg));
+    ctgError("malloc %d failed", (int32_t)sizeof(SCtgDropDBMsg));
     CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
@@ -590,13 +595,43 @@ _return:
   CTG_RET(code);
 }
 
+int32_t ctgDropDbVgroupEnqueue(SCatalog* pCtg, const char *dbFName, bool syncOp) {
+  int32_t code = 0;
+  SCtgCacheOperation action= {.opId = CTG_OP_DROP_DB_VGROUP, .syncOp = syncOp};
+  SCtgDropDbVgroupMsg *msg = taosMemoryMalloc(sizeof(SCtgDropDbVgroupMsg));
+  if (NULL == msg) {
+    ctgError("malloc %d failed", (int32_t)sizeof(SCtgDropDbVgroupMsg));
+    CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
+  }
+
+  char *p = strchr(dbFName, '.');
+  if (p && CTG_IS_SYS_DBNAME(p + 1)) {
+    dbFName = p + 1;
+  }
+
+  msg->pCtg = pCtg;
+  strncpy(msg->dbFName, dbFName, sizeof(msg->dbFName));
+
+  action.data = msg;
+
+  CTG_ERR_JRET(ctgEnqueue(pCtg, &action));
+
+  return TSDB_CODE_SUCCESS;
+
+_return:
+
+  taosMemoryFreeClear(action.data);
+  CTG_RET(code);
+}
+
+
 
 int32_t ctgDropStbMetaEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *stbName, uint64_t suid, bool syncOp) {
   int32_t code = 0;
   SCtgCacheOperation action= {.opId = CTG_OP_DROP_STB_META, .syncOp = syncOp};
-  SCtgRemoveStbMsg *msg = taosMemoryMalloc(sizeof(SCtgRemoveStbMsg));
+  SCtgDropStbMetaMsg *msg = taosMemoryMalloc(sizeof(SCtgDropStbMetaMsg));
   if (NULL == msg) {
-    ctgError("malloc %d failed", (int32_t)sizeof(SCtgRemoveStbMsg));
+    ctgError("malloc %d failed", (int32_t)sizeof(SCtgDropStbMetaMsg));
     CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
@@ -623,9 +658,9 @@ _return:
 int32_t ctgDropTbMetaEnqueue(SCatalog* pCtg, const char *dbFName, int64_t dbId, const char *tbName, bool syncOp) {
   int32_t code = 0;
   SCtgCacheOperation action= {.opId = CTG_OP_DROP_TB_META, .syncOp = syncOp};
-  SCtgRemoveTblMsg *msg = taosMemoryMalloc(sizeof(SCtgRemoveTblMsg));
+  SCtgDropTblMetaMsg *msg = taosMemoryMalloc(sizeof(SCtgDropTblMetaMsg));
   if (NULL == msg) {
-    ctgError("malloc %d failed", (int32_t)sizeof(SCtgRemoveTblMsg));
+    ctgError("malloc %d failed", (int32_t)sizeof(SCtgDropTblMetaMsg));
     CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
@@ -1281,7 +1316,7 @@ _return:
 
 int32_t ctgOpDropDbCache(SCtgCacheOperation *operation) {
   int32_t code = 0;
-  SCtgRemoveDBMsg *msg = operation->data;
+  SCtgDropDBMsg *msg = operation->data;
   SCatalog* pCtg = msg->pCtg;
 
   SCtgDBCache *dbCache = NULL;
@@ -1304,6 +1339,33 @@ _return:
   CTG_RET(code);
 }
 
+int32_t ctgOpDropDbVgroup(SCtgCacheOperation *operation) {
+  int32_t code = 0;
+  SCtgDropDbVgroupMsg *msg = operation->data;
+  SCatalog* pCtg = msg->pCtg;
+
+  SCtgDBCache *dbCache = NULL;
+  ctgGetDBCache(msg->pCtg, msg->dbFName, &dbCache);
+  if (NULL == dbCache) {
+    goto _return;
+  }
+  
+  CTG_ERR_RET(ctgWAcquireVgInfo(pCtg, dbCache));
+  
+  ctgFreeVgInfo(dbCache->vgInfo);
+  dbCache->vgInfo = NULL;
+
+  ctgDebug("db vgInfo removed, dbFName:%s", msg->dbFName);
+
+  ctgWReleaseVgInfo(dbCache);
+
+_return:
+
+  taosMemoryFreeClear(msg);
+  
+  CTG_RET(code);
+}
+
 
 int32_t ctgOpUpdateTbMeta(SCtgCacheOperation *operation) {
   int32_t code = 0;
@@ -1353,7 +1415,7 @@ _return:
 
 int32_t ctgOpDropStbMeta(SCtgCacheOperation *operation) {
   int32_t code = 0;
-  SCtgRemoveStbMsg *msg = operation->data;
+  SCtgDropStbMetaMsg *msg = operation->data;
   SCatalog* pCtg = msg->pCtg;
 
   SCtgDBCache *dbCache = NULL;
@@ -1399,7 +1461,7 @@ _return:
 
 int32_t ctgOpDropTbMeta(SCtgCacheOperation *operation) {
   int32_t code = 0;
-  SCtgRemoveTblMsg *msg = operation->data;
+  SCtgDropTblMetaMsg *msg = operation->data;
   SCatalog* pCtg = msg->pCtg;
 
   SCtgDBCache *dbCache = NULL;

source/libs/catalog/src/ctgDbg.c

@@ -132,7 +132,22 @@ void ctgdUserCallback(SMetaData* pResult, void* param, int32_t code) {
   }     
 }
 
-int32_t ctgdLaunchAsyncCall(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, uint64_t reqId) {
+
+/*
+prepare SQL:
+create database db1;
+use db1;
+create stable st1 (ts timestamp, f1 int) tags(t1 int);
+create table tb1 using st1 tags(1);
+insert into tb1 values (now, 1);
+create qnode on dnode 1;
+create user user1 pass "abc";
+create database db2;
+grant write on db2.* to user1;
+create function udf1 as '/tmp/libudf1.so' outputtype int;
+create aggregate function udf2 as '/tmp/libudf2.so' outputtype int;
+*/
+int32_t ctgdLaunchAsyncCall(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, uint64_t reqId, bool forceUpdate) {
   int32_t code = 0;
   SCatalogReq req = {0};
   req.pTableMeta = taosArrayInit(2, sizeof(SName));
@@ -144,6 +159,7 @@ int32_t ctgdLaunchAsyncCall(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps
   req.pIndex = NULL;//taosArrayInit(2, TSDB_INDEX_FNAME_LEN);
   req.pUser = taosArrayInit(2, sizeof(SUserAuthInfo));
   req.qNodeRequired = true;
+  req.forceUpdate = forceUpdate;
 
   SName name = {0};
   char dbFName[TSDB_DB_FNAME_LEN] = {0};

source/libs/qworker/inc/qwInt.h

@@ -34,6 +34,7 @@ extern "C" {
 #define QW_DEFAULT_SCH_TASK_NUMBER  10000
 #define QW_DEFAULT_SHORT_RUN_TIMES  2
 #define QW_DEFAULT_HEARTBEAT_MSEC   5000
+#define QW_SCH_TIMEOUT_MSEC 180000
 
 enum {
   QW_PHASE_PRE_QUERY = 1,
@@ -137,7 +138,7 @@ typedef struct SQWTaskCtx {
 } SQWTaskCtx;
 
 typedef struct SQWSchStatus {
-  int32_t        lastAccessTs;  // timestamp in second
+  int64_t        hbBrokenTs;  // timestamp in msecond
   SRWLatch       hbConnLock;
   SRpcHandleInfo hbConnInfo;
   SQueryNodeEpId hbEpId;
@@ -354,6 +355,8 @@ int32_t qwOpenRef(void);
 void qwSetHbParam(int64_t refId, SQWHbParam **pParam);
 int32_t qwUpdateTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type);
 int64_t qwGetTimeInQueue(SQWorker *mgmt, EQueueType type);
+void qwClearExpiredSch(SArray* pExpiredSch);
+int32_t qwAcquireScheduler(SQWorker *mgmt, uint64_t sId, int32_t rwType, SQWSchStatus **sch);
 
 void qwDbgDumpMgmtInfo(SQWorker *mgmt);
 int32_t qwDbgValidateStatus(QW_FPARAMS_DEF, int8_t oriStatus, int8_t newStatus, bool *ignore);

source/libs/qworker/src/qwUtil.c

@@ -535,3 +535,9 @@ int64_t qwGetTimeInQueue(SQWorker *mgmt, EQueueType type) {
   return -1;
 }
 
+
+void qwClearExpiredSch(SArray* pExpiredSch) {
+
+}
+
+

source/libs/qworker/src/qworker.c

@@ -21,10 +21,12 @@ int32_t qwProcessHbLinkBroken(SQWorker *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *re
   SSchedulerHbRsp rsp = {0};
   SQWSchStatus   *sch = NULL;
 
-  QW_ERR_RET(qwAcquireAddScheduler(mgmt, req->sId, QW_READ, &sch));
+  QW_ERR_RET(qwAcquireScheduler(mgmt, req->sId, QW_READ, &sch));
 
   QW_LOCK(QW_WRITE, &sch->hbConnLock);
 
+  sch->hbBrokenTs = taosGetTimestampMs();
+  
   if (qwMsg->connInfo.handle == sch->hbConnInfo.handle) {
     tmsgReleaseHandle(&sch->hbConnInfo, TAOS_CONN_SERVER);
     sch->hbConnInfo.handle = NULL;
@@ -794,6 +796,7 @@ void qwProcessHbTimerEvent(void *param, void *tmrId) {
   SQWSchStatus *sch = NULL;
   int32_t       taskNum = 0;
   SQWHbInfo    *rspList = NULL;
+  SArray       *pExpiredSch = NULL;
   int32_t       code = 0;
 
   qwDbgDumpMgmtInfo(mgmt);
@@ -809,8 +812,11 @@ void qwProcessHbTimerEvent(void *param, void *tmrId) {
   }
 
   rspList = taosMemoryCalloc(schNum, sizeof(SQWHbInfo));
-  if (NULL == rspList) {
+  pExpiredSch = taosArrayInit(schNum, sizeof(uint64_t));
+  if (NULL == rspList || NULL == pExpiredSch) {
     QW_UNLOCK(QW_READ, &mgmt->schLock);
+    taosMemoryFree(rspList);
+    taosArrayDestroy(pExpiredSch);
     QW_ELOG("calloc %d SQWHbInfo failed", schNum);
     taosTmrReset(qwProcessHbTimerEvent, QW_DEFAULT_HEARTBEAT_MSEC, param, mgmt->timer, &mgmt->hbTimer);
     qwRelease(refId);
@@ -820,6 +826,7 @@ void qwProcessHbTimerEvent(void *param, void *tmrId) {
   void   *key = NULL;
   size_t  keyLen = 0;
   int32_t i = 0;
+  int64_t currentMs = taosGetTimestampMs();
 
   void *pIter = taosHashIterate(mgmt->schHash, NULL);
   while (pIter) {
@@ -827,6 +834,11 @@ void qwProcessHbTimerEvent(void *param, void *tmrId) {
     if (NULL == sch->hbConnInfo.handle) {
       uint64_t *sId = taosHashGetKey(pIter, NULL);
       QW_TLOG("cancel send hb to sch %" PRIx64 " cause of no connection handle", *sId);
+
+      if (sch->hbBrokenTs > 0 && ((currentMs - sch->hbBrokenTs) > QW_SCH_TIMEOUT_MSEC) && taosHashGetSize(sch->tasksHash) <= 0) {
+        taosArrayPush(pExpiredSch, sId);
+      }
+      
       pIter = taosHashIterate(mgmt->schHash, pIter);
       continue;
     }
@@ -852,7 +864,12 @@ _return:
     tFreeSSchedulerHbRsp(&rspList[j].rsp);
   }
 
+  if (taosArrayGetSize(pExpiredSch) > 0) {
+    qwClearExpiredSch(pExpiredSch);
+  }
+
   taosMemoryFreeClear(rspList);
+  taosArrayDestroy(pExpiredSch);
 
   taosTmrReset(qwProcessHbTimerEvent, QW_DEFAULT_HEARTBEAT_MSEC, param, mgmt->timer, &mgmt->hbTimer);
   qwRelease(refId);

source/libs/scheduler/inc/schedulerInt.h

@@ -102,11 +102,11 @@ typedef struct SSchedulerMgmt {
   uint64_t        taskId; // sequential taksId
   uint64_t        sId;    // schedulerId
   SSchedulerCfg   cfg;
-  SRWLatch        lock;
   bool            exit;
   int32_t         jobRef;
   int32_t         jobNum;
   SSchStat        stat;
+  SRWLatch        hbLock;
   SHashObj       *hbConnections;
 } SSchedulerMgmt;
 
@@ -320,6 +320,8 @@ extern SSchedulerMgmt schMgmt;
 #define SCH_UNLOCK(type, _lock) (SCH_READ == (type) ? taosRUnLockLatch(_lock) : taosWUnLockLatch(_lock))
 
 
+void schDeregisterTaskHb(SSchJob *pJob, SSchTask *pTask);
+void schCleanClusterHb(void* pTrans);
 int32_t schLaunchTask(SSchJob *job, SSchTask *task);
 int32_t schBuildAndSendMsg(SSchJob *job, SSchTask *task, SQueryNodeAddr *addr, int32_t msgType);
 SSchJob *schAcquireJob(int64_t refId);

source/libs/scheduler/src/schJob.c

@@ -126,30 +126,6 @@ _return:
   SCH_RET(code);
 }
 
-void schDeregisterTaskHb(SSchJob *pJob, SSchTask *pTask) {
-  if (!pTask->registerdHb) {
-    return;
-  }
-  
-  SQueryNodeAddr *addr = taosArrayGet(pTask->candidateAddrs, pTask->candidateIdx);
-  SQueryNodeEpId  epId = {0};
-
-  epId.nodeId = addr->nodeId;
-
-  SEp* pEp = SCH_GET_CUR_EP(addr);
-  strcpy(epId.ep.fqdn, pEp->fqdn);
-  epId.ep.port = pEp->port;
-
-  SSchHbTrans *hb = taosHashGet(schMgmt.hbConnections, &epId, sizeof(SQueryNodeEpId));
-  if (NULL == hb) {
-    SCH_TASK_ELOG("nodeId %d fqdn %s port %d not in hb connections", epId.nodeId, epId.ep.fqdn, epId.ep.port);
-    return;
-  }
-
-  atomic_sub_fetch_64(&hb->taskNum, 1);
-  
-  pTask->registerdHb = false;
-}
 
 void schFreeTask(SSchJob *pJob, SSchTask *pTask) {
   schDeregisterTaskHb(pJob, pTask);
@@ -377,15 +353,21 @@ int32_t schDropTaskExecNode(SSchJob *pJob, SSchTask *pTask, void *handle, int32_
     return TSDB_CODE_SUCCESS;
   }
 
-  taosHashRemove(pTask->execNodes, &execIdx, sizeof(execIdx));
+  if (taosHashRemove(pTask->execNodes, &execIdx, sizeof(execIdx))) {
+    SCH_TASK_ELOG("fail to remove execIdx %d from execNodeList", execIdx);
+  } else {
+    SCH_TASK_DLOG("execIdx %d removed from execNodeList", execIdx);
+  }
+  
   if (execIdx != pTask->execIdx) {     // ignore it
+    SCH_TASK_DLOG("execIdx %d is not current execIdx %d", execIdx, pTask->execIdx);
     SCH_RET(TSDB_CODE_SCH_IGNORE_ERROR);
   }
 
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t schUpdateTaskExecNode(SSchTask *pTask, void *handle, int32_t execIdx) {
+int32_t schUpdateTaskExecNode(SSchJob *pJob, SSchTask *pTask, void *handle, int32_t execIdx) {
   if (taosHashGetSize(pTask->execNodes) <= 0) {
     return TSDB_CODE_SUCCESS;
   }
@@ -393,6 +375,8 @@ int32_t schUpdateTaskExecNode(SSchTask *pTask, void *handle, int32_t execIdx) {
   SSchNodeInfo *nodeInfo = taosHashGet(pTask->execNodes, &execIdx, sizeof(execIdx));
   nodeInfo->handle = handle;
 
+  SCH_TASK_DLOG("handle updated to %p for execIdx %d", handle, execIdx);
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -403,7 +387,7 @@ int32_t schUpdateTaskHandle(SSchJob *pJob, SSchTask *pTask, bool dropExecNode, v
 
   SCH_SET_TASK_HANDLE(pTask, handle);
 
-  schUpdateTaskExecNode(pTask, handle, execIdx);
+  schUpdateTaskExecNode(pJob, pTask, handle, execIdx);
 
   return TSDB_CODE_SUCCESS;
 }
@@ -551,6 +535,8 @@ int32_t schSetAddrsFromNodeList(SSchJob *pJob, SSchTask *pTask) {
         SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
       }
 
+      SCH_TASK_DLOG("set %dth condidate addr, id %d, fqdn:%s, port:%d", i, naddr->nodeId, SCH_GET_CUR_EP(naddr)->fqdn, SCH_GET_CUR_EP(naddr)->port);
+
       ++addNum;
     }
   }
@@ -1110,6 +1096,7 @@ 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_ERR_RET(schLaunchTask(pJob, parent));
     }
   }
@@ -1186,7 +1173,7 @@ void schDropTaskOnExecNode(SSchJob *pJob, SSchTask *pTask) {
     nodeInfo = taosHashIterate(pTask->execNodes, nodeInfo);
   }
 
-  SCH_TASK_DLOG("task has %d exec address", size);
+  SCH_TASK_DLOG("task has been dropped on %d exec nodes", size);
 }
 
 
@@ -1196,7 +1183,8 @@ int32_t schRescheduleTask(SSchJob *pJob, SSchTask *pTask) {
   }
 
   SCH_LOCK_TASK(pTask);
-  if (JOB_TASK_STATUS_EXECUTING == pTask->status && pJob->fetchTask != pTask) {
+  if (JOB_TASK_STATUS_EXECUTING == pTask->status && pJob->fetchTask != pTask && taosArrayGetSize(pTask->candidateAddrs) > 1) {
+    SCH_TASK_DLOG("task execIdx %d will be rescheduled now", pTask->execIdx);
     schDropTaskOnExecNode(pJob, pTask);
     taosHashClear(pTask->execNodes);
     schProcessOnTaskFailure(pJob, pTask, TSDB_CODE_SCH_TIMEOUT_ERROR);
@@ -1306,9 +1294,10 @@ int32_t schLaunchTaskImpl(SSchJob *pJob, SSchTask *pTask) {
   int32_t code = 0;
 
   atomic_add_fetch_32(&pTask->level->taskLaunchedNum, 1);
-
   pTask->execIdx++;
 
+  SCH_TASK_DLOG("start to launch task's %dth exec", pTask->execIdx);
+
   SCH_LOG_TASK_START_TS(pTask);
 
   if (schJobNeedToStop(pJob, &status)) {
@@ -1471,9 +1460,10 @@ void schFreeJobImpl(void *job) {
 
   qDebug("QID:0x%" PRIx64 " job freed, refId:%" PRIx64 ", pointer:%p", queryId, refId, pJob);
 
-  atomic_sub_fetch_32(&schMgmt.jobNum, 1);
-
-  schCloseJobRef();
+  int32_t jobNum = atomic_sub_fetch_32(&schMgmt.jobNum, 1);
+  if (jobNum == 0) {
+    schCloseJobRef();
+  }
 }
 
 int32_t schExecJobImpl(void *pTrans, SArray *pNodeList, SQueryPlan *pDag, int64_t *job, const char *sql,

source/libs/scheduler/src/schRemote.c

@@ -648,31 +648,6 @@ _return:
   SCH_RET(code);
 }
 
-int32_t schRegisterHbConnection(SSchJob *pJob, SSchTask *pTask, SQueryNodeEpId *epId, bool *exist) {
-  int32_t     code = 0;
-  SSchHbTrans hb = {0};
-
-  hb.trans.pTrans = pJob->pTrans;
-
-  SCH_ERR_RET(schMakeHbRpcCtx(pJob, pTask, &hb.rpcCtx));
-
-  code = taosHashPut(schMgmt.hbConnections, epId, sizeof(SQueryNodeEpId), &hb, sizeof(SSchHbTrans));
-  if (code) {
-    schFreeRpcCtx(&hb.rpcCtx);
-
-    if (HASH_NODE_EXIST(code)) {
-      *exist = true;
-      return TSDB_CODE_SUCCESS;
-    }
-
-    qError("taosHashPut hb trans failed, nodeId:%d, fqdn:%s, port:%d", epId->nodeId, epId->ep.fqdn, epId->ep.port);
-    SCH_ERR_RET(code);
-  }
-
-  return TSDB_CODE_SUCCESS;
-}
-
-
 int32_t schBuildAndSendHbMsg(SQueryNodeEpId *nodeEpId, SArray* taskAction) {
   SSchedulerHbReq req = {0};
   int32_t         code = 0;
@@ -684,17 +659,20 @@ int32_t schBuildAndSendHbMsg(SQueryNodeEpId *nodeEpId, SArray* taskAction) {
   req.sId = schMgmt.sId;
   memcpy(&req.epId, nodeEpId, sizeof(SQueryNodeEpId));
 
+  SCH_LOCK(SCH_READ, &schMgmt.hbLock);
   SSchHbTrans *hb = taosHashGet(schMgmt.hbConnections, nodeEpId, sizeof(SQueryNodeEpId));
   if (NULL == hb) {
-    qError("taosHashGet hb connection failed, nodeId:%d, fqdn:%s, port:%d", nodeEpId->nodeId, nodeEpId->ep.fqdn,
+    SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+    qError("hb connection no longer exist, nodeId:%d, fqdn:%s, port:%d", nodeEpId->nodeId, nodeEpId->ep.fqdn,
            nodeEpId->ep.port);
-    SCH_ERR_RET(code);
+    return TSDB_CODE_SUCCESS;
   }
 
   SCH_LOCK(SCH_WRITE, &hb->lock);
   code = schCloneHbRpcCtx(&hb->rpcCtx, &rpcCtx);
   memcpy(&trans, &hb->trans, sizeof(trans));
   SCH_UNLOCK(SCH_WRITE, &hb->lock);
+  SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
 
   SCH_ERR_RET(code);
 
@@ -764,60 +742,6 @@ _return:
   SCH_RET(code);
 }
 
-
-int32_t schEnsureHbConnection(SSchJob *pJob, SSchTask *pTask) {
-  SQueryNodeAddr *addr = taosArrayGet(pTask->candidateAddrs, pTask->candidateIdx);
-  SQueryNodeEpId  epId = {0};
-
-  epId.nodeId = addr->nodeId;
-
-  SEp* pEp = SCH_GET_CUR_EP(addr);
-  strcpy(epId.ep.fqdn, pEp->fqdn);
-  epId.ep.port = pEp->port;
-
-  SSchHbTrans *hb = NULL;
-  while (true) {
-    hb = taosHashGet(schMgmt.hbConnections, &epId, sizeof(SQueryNodeEpId));
-    if (NULL == hb) {
-      bool exist = false;
-      SCH_ERR_RET(schRegisterHbConnection(pJob, pTask, &epId, &exist));
-      if (!exist) {
-        SCH_ERR_RET(schBuildAndSendHbMsg(&epId, NULL));
-      }
-
-      continue;
-    }
-
-    break;
-  }
-
-  atomic_add_fetch_64(&hb->taskNum, 1);
-  
-  pTask->registerdHb = true;
-
-  return TSDB_CODE_SUCCESS;
-}
-
-int32_t schUpdateHbConnection(SQueryNodeEpId *epId, SSchTrans *trans) {
-  int32_t      code = 0;
-  SSchHbTrans *hb = NULL;
-
-  hb = taosHashGet(schMgmt.hbConnections, epId, sizeof(SQueryNodeEpId));
-  if (NULL == hb) {
-    qError("taosHashGet hb connection failed, nodeId:%d, fqdn:%s, port:%d", epId->nodeId, epId->ep.fqdn, epId->ep.port);
-    SCH_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
-  }
-
-  SCH_LOCK(SCH_WRITE, &hb->lock);
-  memcpy(&hb->trans, trans, sizeof(*trans));
-  SCH_UNLOCK(SCH_WRITE, &hb->lock);
-
-  qDebug("hb connection updated, sId:%" 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;
-}
-
 int32_t schHandleHbCallback(void *param, const SDataBuf *pMsg, int32_t code) {
   SSchedulerHbRsp rsp = {0};
   SSchTaskCallbackParam *pParam = (SSchTaskCallbackParam *)param;
@@ -1037,6 +961,7 @@ int32_t schBuildAndSendMsg(SSchJob *pJob, SSchTask *pTask, SQueryNodeAddr *addr,
   if (NULL == addr) {
     addr = taosArrayGet(pTask->candidateAddrs, pTask->candidateIdx);
     isCandidateAddr = true;
+    SCH_TASK_DLOG("target candidateIdx %d", pTask->candidateIdx);
   }
 
   SEpSet epSet = addr->epSet;

source/libs/scheduler/src/schUtil.c

@@ -21,17 +21,189 @@
 #include "tref.h"
 #include "trpc.h"
 
+
+void schCleanClusterHb(void* pTrans) {
+  SCH_LOCK(SCH_WRITE, &schMgmt.hbLock);
+
+  SSchHbTrans *hb = taosHashIterate(schMgmt.hbConnections, NULL);
+  while (hb) {
+    if (hb->trans.pTrans == pTrans) {
+      SQueryNodeEpId* pEpId = taosHashGetKey(hb, NULL);
+      rpcReleaseHandle(hb->trans.pHandle, TAOS_CONN_CLIENT);
+      taosHashRemove(schMgmt.hbConnections, pEpId, sizeof(SQueryNodeEpId));
+    }
+    
+    hb = taosHashIterate(schMgmt.hbConnections, hb);
+  }
+  
+  SCH_UNLOCK(SCH_WRITE, &schMgmt.hbLock);
+}
+
+int32_t schRemoveHbConnection(SSchJob *pJob, SSchTask *pTask, SQueryNodeEpId *epId) {
+  return TSDB_CODE_SUCCESS; // TODO ENABLE IT WHEN RPC IS READY
+  
+  int32_t     code = 0;
+
+  SCH_LOCK(SCH_WRITE, &schMgmt.hbLock);
+  SSchHbTrans *hb = taosHashGet(schMgmt.hbConnections, epId, sizeof(SQueryNodeEpId));
+  if (NULL == hb) {
+    SCH_UNLOCK(SCH_WRITE, &schMgmt.hbLock);
+    SCH_TASK_ELOG("nodeId %d fqdn %s port %d not in hb connections", epId->nodeId, epId->ep.fqdn, epId->ep.port);
+    return TSDB_CODE_SUCCESS;
+  }
+
+  int64_t taskNum = atomic_load_64(&hb->taskNum);
+  if (taskNum <= 0) {
+    rpcReleaseHandle(hb->trans.pHandle, TAOS_CONN_CLIENT);
+    taosHashRemove(schMgmt.hbConnections, epId, sizeof(SQueryNodeEpId));
+  }
+  SCH_UNLOCK(SCH_WRITE, &schMgmt.hbLock);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+int32_t schAddHbConnection(SSchJob *pJob, SSchTask *pTask, SQueryNodeEpId *epId, bool *exist) {
+  int32_t     code = 0;
+  SSchHbTrans hb = {0};
+
+  hb.trans.pTrans = pJob->pTrans;
+  hb.taskNum = 1;
+
+  SCH_ERR_RET(schMakeHbRpcCtx(pJob, pTask, &hb.rpcCtx));
+
+  SCH_LOCK(SCH_WRITE, &schMgmt.hbLock);
+  code = taosHashPut(schMgmt.hbConnections, epId, sizeof(SQueryNodeEpId), &hb, sizeof(SSchHbTrans));
+  if (code) {
+    SCH_UNLOCK(SCH_WRITE, &schMgmt.hbLock);
+    schFreeRpcCtx(&hb.rpcCtx);
+
+    if (HASH_NODE_EXIST(code)) {
+      *exist = true;
+      return TSDB_CODE_SUCCESS;
+    }
+
+    qError("taosHashPut hb trans failed, nodeId:%d, fqdn:%s, port:%d", epId->nodeId, epId->ep.fqdn, epId->ep.port);
+    SCH_ERR_RET(code);
+  }
+
+  SCH_UNLOCK(SCH_WRITE, &schMgmt.hbLock);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t schRegisterHbConnection(SSchJob *pJob, SSchTask *pTask, SQueryNodeEpId *pEpId) {
+  SSchHbTrans *hb = NULL;
+
+  while (true) {
+    SCH_LOCK(SCH_READ, &schMgmt.hbLock);
+    hb = taosHashGet(schMgmt.hbConnections, pEpId, sizeof(SQueryNodeEpId));
+    if (NULL == hb) {
+      bool exist = false;
+      SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+      SCH_ERR_RET(schAddHbConnection(pJob, pTask, pEpId, &exist));
+      if (!exist) {
+        SCH_RET(schBuildAndSendHbMsg(pEpId, NULL));
+      }
+
+      continue;
+    }
+
+    break;
+  }
+
+  atomic_add_fetch_64(&hb->taskNum, 1);
+
+  SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+void schDeregisterTaskHb(SSchJob *pJob, SSchTask *pTask) {
+  if (!pTask->registerdHb) {
+    return;
+  }
+  
+  SQueryNodeAddr *addr = taosArrayGet(pTask->candidateAddrs, pTask->candidateIdx);
+  SQueryNodeEpId  epId = {0};
+
+  epId.nodeId = addr->nodeId;
+
+  SEp* pEp = SCH_GET_CUR_EP(addr);
+  strcpy(epId.ep.fqdn, pEp->fqdn);
+  epId.ep.port = pEp->port;
+
+  SCH_LOCK(SCH_READ, &schMgmt.hbLock);
+  SSchHbTrans *hb = taosHashGet(schMgmt.hbConnections, &epId, sizeof(SQueryNodeEpId));
+  if (NULL == hb) {
+    SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+    SCH_TASK_WLOG("nodeId %d fqdn %s port %d not in hb connections", epId.nodeId, epId.ep.fqdn, epId.ep.port);
+    return;
+  }
+
+  int64_t taskNum = atomic_sub_fetch_64(&hb->taskNum, 1);
+  if (0 == taskNum) {
+    SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+    schRemoveHbConnection(pJob, pTask, &epId);
+  } else {
+    SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+  }
+  
+  pTask->registerdHb = false;
+}
+
+
+
+int32_t schEnsureHbConnection(SSchJob *pJob, SSchTask *pTask) {
+  SQueryNodeAddr *addr = taosArrayGet(pTask->candidateAddrs, pTask->candidateIdx);
+  SQueryNodeEpId  epId = {0};
+
+  epId.nodeId = addr->nodeId;
+
+  SEp* pEp = SCH_GET_CUR_EP(addr);
+  strcpy(epId.ep.fqdn, pEp->fqdn);
+  epId.ep.port = pEp->port;
+
+  SCH_ERR_RET(schRegisterHbConnection(pJob, pTask, &epId));
+  
+  pTask->registerdHb = true;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t schUpdateHbConnection(SQueryNodeEpId *epId, SSchTrans *trans) {
+  int32_t      code = 0;
+  SSchHbTrans *hb = NULL;
+
+  SCH_LOCK(SCH_READ, &schMgmt.hbLock);
+  hb = taosHashGet(schMgmt.hbConnections, epId, sizeof(SQueryNodeEpId));
+  if (NULL == hb) {
+    SCH_UNLOCK(SCH_READ, &schMgmt.hbLock);
+    qError("taosHashGet hb connection failed, nodeId:%d, fqdn:%s, port:%d", epId->nodeId, epId->ep.fqdn, epId->ep.port);
+    SCH_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+  }
+
+  SCH_LOCK(SCH_WRITE, &hb->lock);
+  memcpy(&hb->trans, trans, sizeof(*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,
+         epId->nodeId, epId->ep.fqdn, epId->ep.port, trans->pTrans, trans->pHandle);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 void schCloseJobRef(void) {
   if (!atomic_load_8((int8_t *)&schMgmt.exit)) {
     return;
   }
 
-  SCH_LOCK(SCH_WRITE, &schMgmt.lock);
-  if (atomic_load_32(&schMgmt.jobNum) <= 0 && schMgmt.jobRef >= 0) {
+  if (schMgmt.jobRef >= 0) {
     taosCloseRef(schMgmt.jobRef);
     schMgmt.jobRef = -1;
   }
-  SCH_UNLOCK(SCH_WRITE, &schMgmt.lock);
 }
 
 uint64_t schGenTaskId(void) { return atomic_add_fetch_64(&schMgmt.taskId, 1); }
@@ -88,4 +260,3 @@ void schFreeRpcCtx(SRpcCtx *pCtx) {
   (*pCtx->freeFunc)(pCtx->brokenVal.val);
 }
 
-

source/libs/scheduler/src/scheduler.c

@@ -182,6 +182,14 @@ int32_t scheduleCancelJob(int64_t job) {
   SCH_RET(code);
 }
 
+void schedulerStopQueryHb(void *pTrans) {
+  if (NULL == pTrans) {
+    return;
+  }
+
+  schCleanClusterHb(pTrans);
+}
+
 void schedulerFreeJob(int64_t job) {
   SSchJob *pJob = schAcquireJob(job);
   if (NULL == pJob) {
@@ -220,6 +228,7 @@ void schedulerDestroy(void) {
     }
   }
 
+  SCH_LOCK(SCH_WRITE, &schMgmt.hbLock);
   if (schMgmt.hbConnections) {
     void *pIter = taosHashIterate(schMgmt.hbConnections, NULL);
     while (pIter != NULL) {
@@ -230,4 +239,5 @@ void schedulerDestroy(void) {
     taosHashCleanup(schMgmt.hbConnections);
     schMgmt.hbConnections = NULL;
   }
+  SCH_UNLOCK(SCH_WRITE, &schMgmt.hbLock);
 }

source/libs/transport/src/transSvr.c

@@ -180,6 +180,12 @@ static bool addHandleToAcceptloop(void* arg);
       if (!transQueuePush(&conn->srvMsgs, srvMsg)) {                                  \
         return;                                                                       \
       }                                                                               \
+      if (conn->regArg.init) {                                                        \
+        tTrace("server conn %p release, notify server app", conn);                    \
+        STrans* pTransInst = conn->pTransInst;                                        \
+        (*pTransInst->cfp)(pTransInst->parent, &(conn->regArg.msg), NULL);            \
+        memset(&conn->regArg, 0, sizeof(conn->regArg));                               \
+      }                                                                               \
       uvStartSendRespInternal(srvMsg);                                                \
       return;                                                                         \
     }                                                                                 \
@@ -1154,6 +1160,10 @@ int transGetConnInfo(void* thandle, STransHandleInfo* pInfo) {
   }
   SExHandle* ex = thandle;
   SSvrConn*  pConn = ex->handle;
+  if (pConn == NULL) {
+    tTrace("invalid handle %p, failed to Get Conn info", thandle);
+    return -1;
+  }
 
   struct sockaddr_in addr = pConn->addr;
   pInfo->clientIp = (uint32_t)(addr.sin_addr.s_addr);