From b8391fad62eb5d23544f7218a272685325e40aea Mon Sep 17 00:00:00 2001
From: dapan1121 <wpan@taosdata.com>
Date: Tue, 12 Apr 2022 19:10:52 +0800
Subject: [PATCH] fix heartbeat msg

---
 include/common/tmsg.h                    | 114 ++++++----
 include/libs/scheduler/scheduler.h       |   2 +
 include/util/tarray.h                    |   8 +
 source/client/inc/clientInt.h            |  10 +-
 source/client/src/clientEnv.c            |  70 +++++-
 source/client/src/clientHb.c             | 146 +++++++++++-
 source/client/src/clientImpl.c           |   2 +-
 source/client/src/clientMain.c           |   6 +-
 source/client/src/clientMsgHandler.c     |   2 +-
 source/common/src/tmsg.c                 | 117 +++++++++-
 source/dnode/mnode/impl/inc/mndInt.h     |   1 -
 source/dnode/mnode/impl/src/mndDb.c      |   2 +
 source/dnode/mnode/impl/src/mndProfile.c | 277 +++++++++++------------
 source/libs/scheduler/inc/schedulerInt.h |   4 +-
 source/libs/scheduler/src/scheduler.c    |  30 ++-
 source/util/src/tarray.c                 |  15 ++
 16 files changed, 586 insertions(+), 220 deletions(-)

diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index ba9147dcdd..dd7d904255 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -341,12 +341,12 @@ int32_t tSerializeSConnectReq(void* buf, int32_t bufLen, SConnectReq* pReq);
 int32_t tDeserializeSConnectReq(void* buf, int32_t bufLen, SConnectReq* pReq);
 
 typedef struct {
-  int32_t acctId;
-  int64_t clusterId;
-  int32_t connId;
-  int8_t  superUser;
-  SEpSet  epSet;
-  char    sVersion[128];
+  int32_t  acctId;
+  int64_t  clusterId;
+  uint32_t connId;
+  int8_t   superUser;
+  SEpSet   epSet;
+  char     sVersion[128];
 } SConnectRsp;
 
 int32_t tSerializeSConnectRsp(void* buf, int32_t bufLen, SConnectRsp* pRsp);
@@ -1038,40 +1038,6 @@ typedef struct {
 int32_t tSerializeSDCreateMnodeReq(void* buf, int32_t bufLen, SDCreateMnodeReq* pReq);
 int32_t tDeserializeSDCreateMnodeReq(void* buf, int32_t bufLen, SDCreateMnodeReq* pReq);
 
-typedef struct {
-  char    sql[TSDB_SHOW_SQL_LEN];
-  int32_t queryId;
-  int64_t useconds;
-  int64_t stime;
-  int64_t qId;
-  int64_t sqlObjId;
-  int32_t pid;
-  char    fqdn[TSDB_FQDN_LEN];
-  int8_t  stableQuery;
-  int32_t numOfSub;
-  char    subSqlInfo[TSDB_SHOW_SUBQUERY_LEN];  // include subqueries' index, Obj IDs and states(C-complete/I-imcomplete)
-} SQueryDesc;
-
-typedef struct {
-  int32_t connId;
-  int32_t pid;
-  int32_t numOfQueries;
-  int32_t numOfStreams;
-  char    app[TSDB_APP_NAME_LEN];
-  char    pData[];
-} SHeartBeatReq;
-
-typedef struct {
-  int32_t connId;
-  int32_t queryId;
-  int32_t streamId;
-  int32_t totalDnodes;
-  int32_t onlineDnodes;
-  int8_t  killConnection;
-  int8_t  align[3];
-  SEpSet  epSet;
-} SHeartBeatRsp;
-
 typedef struct {
   int32_t connId;
   int32_t queryId;
@@ -1674,13 +1640,48 @@ typedef struct {
 } SKv;
 
 typedef struct {
-  int32_t connId;
+  int64_t tscRid;
   int32_t hbType;
 } SClientHbKey;
 
 typedef struct {
-  SClientHbKey connKey;
-  SHashObj*    info;  // hash<Skv.key, Skv>
+  int64_t tid;
+  int32_t status;
+} SQuerySubDesc;
+
+typedef struct {
+  char     sql[TSDB_SHOW_SQL_LEN];
+  uint64_t queryId;
+  int64_t  useconds;
+  int64_t  stime;
+  int64_t  reqRid;
+  int32_t  pid;
+  char     fqdn[TSDB_FQDN_LEN];
+  int32_t  subPlanNum;
+  SArray*  subDesc;    // SArray<SQuerySubDesc>
+} SQueryDesc;
+
+typedef struct {
+  uint32_t   connId;
+  int32_t    pid;
+  char       app[TSDB_APP_NAME_LEN];
+  SArray*    queryDesc;   // SArray<SQueryDesc>
+} SQueryHbReqBasic;
+
+typedef struct {
+  uint32_t connId;
+  uint64_t killRid;
+  int32_t  totalDnodes;
+  int32_t  onlineDnodes;
+  int8_t   killConnection;
+  int8_t   align[3];
+  SEpSet   epSet;
+} SQueryHbRspBasic;
+
+typedef struct {
+  SClientHbKey      connKey;
+  SQueryHbReqBasic* query;
+  SHashObj*         info;  // hash<Skv.key, Skv>
 } SClientHbReq;
 
 typedef struct {
@@ -1689,9 +1690,10 @@ typedef struct {
 } SClientHbBatchReq;
 
 typedef struct {
-  SClientHbKey connKey;
-  int32_t      status;
-  SArray*      info;  // Array<Skv>
+  SClientHbKey      connKey;
+  int32_t           status;
+  SQueryHbRspBasic* query;
+  SArray*           info;  // Array<Skv>
 } SClientHbRsp;
 
 typedef struct {
@@ -1711,8 +1713,23 @@ static FORCE_INLINE void tFreeReqKvHash(SHashObj* info) {
   }
 }
 
+static FORCE_INLINE void tFreeClientHbQueryDesc(void* pDesc) {
+  SQueryDesc* desc = (SQueryDesc*)pDesc;
+  if (desc->subDesc) {
+    taosArrayDestroy(desc->subDesc);
+    desc->subDesc = NULL;
+  }
+}
+
 static FORCE_INLINE void tFreeClientHbReq(void* pReq) {
   SClientHbReq* req = (SClientHbReq*)pReq;
+  if (req->query) {
+    if (req->query->queryDesc) {
+      taosArrayDestroyEx(req->query->queryDesc, tFreeClientHbQueryDesc);
+    }
+    taosMemoryFreeClear(req->query);
+  }
+  
   if (req->info) {
     tFreeReqKvHash(req->info);
     taosHashCleanup(req->info);
@@ -1741,6 +1758,7 @@ static FORCE_INLINE void tFreeClientKv(void* pKv) {
 
 static FORCE_INLINE void tFreeClientHbRsp(void* pRsp) {
   SClientHbRsp* rsp = (SClientHbRsp*)pRsp;
+  taosMemoryFreeClear(rsp->query);
   if (rsp->info) taosArrayDestroyEx(rsp->info, tFreeClientKv);
 }
 
@@ -1769,13 +1787,13 @@ static FORCE_INLINE int32_t tDecodeSKv(SCoder* pDecoder, SKv* pKv) {
 }
 
 static FORCE_INLINE int32_t tEncodeSClientHbKey(SCoder* pEncoder, const SClientHbKey* pKey) {
-  if (tEncodeI32(pEncoder, pKey->connId) < 0) return -1;
+  if (tEncodeI64(pEncoder, pKey->tscRid) < 0) return -1;
   if (tEncodeI32(pEncoder, pKey->hbType) < 0) return -1;
   return 0;
 }
 
 static FORCE_INLINE int32_t tDecodeSClientHbKey(SCoder* pDecoder, SClientHbKey* pKey) {
-  if (tDecodeI32(pDecoder, &pKey->connId) < 0) return -1;
+  if (tDecodeI64(pDecoder, &pKey->tscRid) < 0) return -1;
   if (tDecodeI32(pDecoder, &pKey->hbType) < 0) return -1;
   return 0;
 }
diff --git a/include/libs/scheduler/scheduler.h b/include/libs/scheduler/scheduler.h
index 5ab4ead89c..460749243c 100644
--- a/include/libs/scheduler/scheduler.h
+++ b/include/libs/scheduler/scheduler.h
@@ -89,6 +89,8 @@ int32_t schedulerAsyncExecJob(void *transport, SArray *pNodeList, SQueryPlan* pD
  */
 int32_t schedulerFetchRows(int64_t job, void **data);
 
+int32_t schedulerGetTasksStatus(int64_t job, SArray *pSub);
+
 
 /**
  * Cancel query job
diff --git a/include/util/tarray.h b/include/util/tarray.h
index 521e54040d..383af8309d 100644
--- a/include/util/tarray.h
+++ b/include/util/tarray.h
@@ -205,6 +205,14 @@ SArray* taosArrayDup(const SArray* pSrc);
  */
 void taosArrayClear(SArray* pArray);
 
+/**
+ * clear the array (remove all element)
+ * @param pArray
+ * @param fp
+ */
+void taosArrayClearEx(SArray* pArray, void (*fp)(void*));
+
+
 /**
  * destroy array list
  * @param pArray
diff --git a/source/client/inc/clientInt.h b/source/client/inc/clientInt.h
index 96d7cead68..4bb1d8e3ff 100644
--- a/source/client/inc/clientInt.h
+++ b/source/client/inc/clientInt.h
@@ -43,7 +43,8 @@ extern "C" {
     }                                \
   } while (0)
 
-#define HEARTBEAT_INTERVAL 1500  // ms
+//#define HEARTBEAT_INTERVAL 1500  // ms
+#define HEARTBEAT_INTERVAL 15000  // ms TODO
 
 typedef struct SAppInstInfo SAppInstInfo;
 
@@ -139,6 +140,7 @@ typedef struct STscObj {
   TdThreadMutex   mutex;      // used to protect the operation on db
   int32_t         numOfReqs;  // number of sqlObj bound to this connection
   SAppInstInfo*   pAppInfo;
+  SHashObj*       pRequests;
 } STscObj;
 
 typedef struct SResultColumn {
@@ -215,11 +217,15 @@ int taos_init();
 
 void* createTscObj(const char* user, const char* auth, const char* db, SAppInstInfo* pAppInfo);
 void  destroyTscObj(void* pObj);
+STscObj *acquireTscObj(int64_t rid);
+int32_t releaseTscObj(int64_t rid);
 
 uint64_t generateRequestId();
 
 void* createRequest(STscObj* pObj, __taos_async_fn_t fp, void* param, int32_t type);
 void  destroyRequest(SRequestObj* pRequest);
+SRequestObj *acquireRequest(int64_t rid);
+int32_t releaseRequest(int64_t rid);
 
 char* getDbOfConnection(STscObj* pObj);
 void  setConnectionDB(STscObj* pTscObj, const char* db);
@@ -258,7 +264,7 @@ SAppHbMgr* appHbMgrInit(SAppInstInfo* pAppInstInfo, char* key);
 void       appHbMgrCleanup(void);
 
 // conn level
-int  hbRegisterConn(SAppHbMgr* pAppHbMgr, int32_t connId, int64_t clusterId, int32_t hbType);
+int  hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, int32_t hbType);
 void hbDeregisterConn(SAppHbMgr* pAppHbMgr, SClientHbKey connKey);
 
 int hbAddConnInfo(SAppHbMgr* pAppHbMgr, SClientHbKey connKey, void* key, void* value, int32_t keyLen, int32_t valueLen);
diff --git a/source/client/src/clientEnv.c b/source/client/src/clientEnv.c
index 359649884f..f997d4cff2 100644
--- a/source/client/src/clientEnv.c
+++ b/source/client/src/clientEnv.c
@@ -37,7 +37,8 @@ static TdThreadOnce tscinit = PTHREAD_ONCE_INIT;
 volatile int32_t      tscInitRes = 0;
 
 static void registerRequest(SRequestObj *pRequest) {
-  STscObj *pTscObj = (STscObj *)taosAcquireRef(clientConnRefPool, pRequest->pTscObj->id);
+  STscObj *pTscObj = acquireTscObj(pRequest->pTscObj->id);
+  
   assert(pTscObj != NULL);
 
   // connection has been released already, abort creating request.
@@ -69,7 +70,7 @@ static void deregisterRequest(SRequestObj *pRequest) {
   tscDebug("0x%" PRIx64 " free Request from connObj: 0x%" PRIx64 ", reqId:0x%" PRIx64 " elapsed:%" PRIu64
            " ms, current:%d, app current:%d",
            pRequest->self, pTscObj->id, pRequest->requestId, duration/1000, num, currentInst);
-  taosReleaseRef(clientConnRefPool, pTscObj->id);
+  releaseTscObj(pTscObj->id);
 }
 
 // todo close the transporter properly
@@ -107,12 +108,24 @@ void *openTransporter(const char *user, const char *auth, int32_t numOfThread) {
   return pDnodeConn;
 }
 
+void closeAllRequests(SHashObj *pRequests) {
+  void   *pIter = taosHashIterate(pRequests, NULL);
+  while (pIter != NULL) {
+    int64_t *rid = pIter;
+
+    releaseRequest(*rid);    
+    
+    pIter = taosHashIterate(pRequests, pIter);
+  }
+}
+
 void destroyTscObj(void *pObj) {
   STscObj *pTscObj = pObj;
 
-  SClientHbKey connKey = {.connId = pTscObj->connId, .hbType = pTscObj->connType};
+  SClientHbKey connKey = {.tscRid = pTscObj->id, .hbType = pTscObj->connType};
   hbDeregisterConn(pTscObj->pAppInfo->pAppHbMgr, connKey);
   atomic_sub_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
+  closeAllRequests(pTscObj->pRequests);
   tscDebug("connObj 0x%" PRIx64 " destroyed, totalConn:%" PRId64, pTscObj->id, pTscObj->pAppInfo->numOfConns);
   taosThreadMutexDestroy(&pTscObj->mutex);
   taosMemoryFreeClear(pTscObj);
@@ -125,6 +138,13 @@ void *createTscObj(const char *user, const char *auth, const char *db, SAppInstI
     return NULL;
   }
 
+  pObj->pRequests = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_ENTRY_LOCK);
+  if (NULL == pObj->pRequests) {
+    taosMemoryFree(pObj);
+    terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
+    return NULL;
+  }
+  
   pObj->pAppInfo = pAppInfo;
   tstrncpy(pObj->user, user, sizeof(pObj->user));
   memcpy(pObj->pass, auth, TSDB_PASSWORD_LEN);
@@ -140,6 +160,14 @@ void *createTscObj(const char *user, const char *auth, const char *db, SAppInstI
   return pObj;
 }
 
+STscObj *acquireTscObj(int64_t rid) {
+  return (STscObj *)taosAcquireRef(clientConnRefPool, rid);
+}
+
+int32_t releaseTscObj(int64_t rid) {
+  return taosReleaseRef(clientConnRefPool, rid);
+}
+
 void *createRequest(STscObj *pObj, __taos_async_fn_t fp, void *param, int32_t type) {
   assert(pObj != NULL);
 
@@ -160,6 +188,14 @@ void *createRequest(STscObj *pObj, __taos_async_fn_t fp, void *param, int32_t ty
   tsem_init(&pRequest->body.rspSem, 0, 0);
 
   registerRequest(pRequest);
+  
+  if (taosHashPut(pObj->pRequests, &pRequest->self, sizeof(pRequest->self), &pRequest->self, sizeof(pRequest->self))) {
+    destroyRequest(pRequest);
+    releaseTscObj(pObj->id);
+    terrno = TSDB_CODE_TSC_OUT_OF_MEMORY;
+    return NULL;
+  }
+  
   return pRequest;
 }
 
@@ -185,6 +221,8 @@ static void doDestroyRequest(void *p) {
 
   assert(RID_VALID(pRequest->self));
 
+  taosHashRemove(pRequest->pTscObj->pRequests, &pRequest->self, sizeof(pRequest->self));
+  
   taosMemoryFreeClear(pRequest->msgBuf);
   taosMemoryFreeClear(pRequest->sqlstr);
   taosMemoryFreeClear(pRequest->pInfo);
@@ -213,9 +251,18 @@ void destroyRequest(SRequestObj *pRequest) {
     return;
   }
 
-  taosReleaseRef(clientReqRefPool, pRequest->self);
+  taosRemoveRef(clientReqRefPool, pRequest->self);
 }
 
+SRequestObj *acquireRequest(int64_t rid) {
+  return (SRequestObj *)taosAcquireRef(clientReqRefPool, rid);
+}
+
+int32_t releaseRequest(int64_t rid) {
+  return taosReleaseRef(clientReqRefPool, rid);
+}
+
+
 void taos_init_imp(void) {
   // In the APIs of other program language, taos_cleanup is not available yet.
   // So, to make sure taos_cleanup will be invoked to clean up the allocated resource to suppress the valgrind warning.
@@ -456,11 +503,18 @@ uint64_t generateRequestId() {
     }
   }
 
-  int64_t  ts = taosGetTimestampMs();
-  uint64_t pid = taosGetPId();
-  int32_t  val = atomic_add_fetch_32(&requestSerialId, 1);
+  uint64_t id = 0;
+  
+  while (true) {
+    int64_t  ts = taosGetTimestampMs();
+    uint64_t pid = taosGetPId();
+    int32_t  val = atomic_add_fetch_32(&requestSerialId, 1);
 
-  uint64_t id = ((hashId & 0x0FFF) << 52) | ((pid & 0x0FFF) << 40) | ((ts & 0xFFFFFF) << 16) | (val & 0xFFFF);
+    id = ((hashId & 0x0FFF) << 52) | ((pid & 0x0FFF) << 40) | ((ts & 0xFFFFFF) << 16) | (val & 0xFFFF);
+    if (id) {
+      break;
+    }
+  }
   return id;
 }
 
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index d389fc34c6..642ba46336 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -14,6 +14,7 @@
  */
 
 #include "catalog.h"
+#include "scheduler.h"
 #include "clientInt.h"
 #include "clientLog.h"
 #include "trpc.h"
@@ -107,10 +108,36 @@ 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, connId:%d, type:%d", pRsp->connKey.connId, pRsp->connKey.hbType);
+    tscWarn("fail to get connInfo, may be dropped, refId:%" PRIx64 ", type:%d", pRsp->connKey.tscRid, pRsp->connKey.hbType);
     return TSDB_CODE_SUCCESS;
   }
 
+  if (pRsp->query) {
+    STscObj *pTscObj = (STscObj *)acquireTscObj(pRsp->connKey.tscRid);
+    if (NULL == pTscObj) {
+      tscDebug("tscObj rid %" PRIx64 " not exist", pRsp->connKey.tscRid);
+    } else {
+      updateEpSet_s(&pTscObj->pAppInfo->mgmtEp, &pRsp->query->epSet);
+      pTscObj->connId = pRsp->query->connId;
+      
+      if (pRsp->query->killRid) {
+        SRequestObj *pRequest = acquireRequest(pRsp->query->killRid);
+        if (NULL == pRequest) {
+          tscDebug("request 0x%" PRIx64 " not exist to kill", pRsp->query->killRid);
+        } else {
+          taos_stop_query((TAOS_RES *)pRequest);
+          releaseRequest(pRsp->query->killRid);
+        }
+      }
+      
+      if (pRsp->query->killConnection) {
+        taos_close(pTscObj);
+      }
+
+      releaseTscObj(pRsp->connKey.tscRid);
+    }
+  }
+  
   int32_t kvNum = pRsp->info ? taosArrayGetSize(pRsp->info) : 0;
 
   tscDebug("hb got %d rsp kv", kvNum);
@@ -206,6 +233,97 @@ static int32_t hbAsyncCallBack(void *param, const SDataBuf *pMsg, int32_t code)
   return code;
 }
 
+int32_t hbBuildQueryDesc(SQueryHbReqBasic *hbBasic, STscObj *pObj) {
+  int64_t now = taosGetTimestampUs();
+  SQueryDesc desc = {0};
+  int32_t code = 0;
+
+  void   *pIter = taosHashIterate(pObj->pRequests, NULL);
+  while (pIter != NULL) {
+    int64_t *rid = pIter;
+    SRequestObj *pRequest = acquireRequest(*rid);
+    if (NULL == pRequest) {
+      continue;
+    }
+
+    tstrncpy(desc.sql, pRequest->sqlstr, sizeof(desc.sql));
+    desc.stime    = pRequest->metric.start;
+    desc.queryId  = pRequest->requestId;
+    desc.useconds = now - pRequest->metric.start;
+    desc.reqRid   = pRequest->self;
+    desc.pid      = hbBasic->pid;
+    taosGetFqdn(desc.fqdn);
+    desc.subPlanNum = pRequest->body.pDag ? pRequest->body.pDag->numOfSubplans : 0;
+
+    if (desc.subPlanNum) {
+      desc.subDesc = taosArrayInit(desc.subPlanNum, sizeof(SQuerySubDesc));
+      if (NULL == desc.subDesc) {
+        releaseRequest(*rid);
+        return TSDB_CODE_QRY_OUT_OF_MEMORY;
+      }
+
+      code = schedulerGetTasksStatus(pRequest->body.queryJob, desc.subDesc);
+      if (code) {
+        taosArrayDestroy(desc.subDesc);
+        desc.subDesc = NULL;
+      }
+    }
+
+    releaseRequest(*rid);    
+    taosArrayPush(hbBasic->queryDesc, &desc);
+    
+    pIter = taosHashIterate(pObj->pRequests, pIter);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t hbGetQueryBasicInfo(SClientHbKey *connKey, SClientHbReq *req) {
+  STscObj *pTscObj = (STscObj *)acquireTscObj(connKey->tscRid);
+  if (NULL == pTscObj) {
+    tscWarn("tscObj rid %" PRIx64 " not exist", connKey->tscRid);
+    return TSDB_CODE_QRY_APP_ERROR;
+  }
+  
+  int32_t numOfQueries = pTscObj->pRequests ? taosHashGetSize(pTscObj->pRequests) : 0;
+  if (numOfQueries <= 0) {
+    releaseTscObj(connKey->tscRid);
+    tscDebug("no queries on connection");
+    return TSDB_CODE_QRY_APP_ERROR;
+  }
+  
+  SQueryHbReqBasic *hbBasic = (SQueryHbReqBasic *)taosMemoryCalloc(1, sizeof(SQueryHbReqBasic));
+  if (NULL == hbBasic) {
+    tscError("calloc %d failed", (int32_t)sizeof(SQueryHbReqBasic));
+    releaseTscObj(connKey->tscRid);
+    return TSDB_CODE_QRY_OUT_OF_MEMORY;
+  }
+
+  hbBasic->queryDesc = taosArrayInit(numOfQueries, sizeof(SQueryDesc));
+  if (NULL == hbBasic->queryDesc) {
+    tscWarn("taosArrayInit %d queryDesc failed", numOfQueries);
+    releaseTscObj(connKey->tscRid);
+    taosMemoryFree(hbBasic);
+    return TSDB_CODE_QRY_OUT_OF_MEMORY;
+  }
+  
+  hbBasic->connId = pTscObj->connId;
+  hbBasic->pid = taosGetPId();
+  taosGetAppName(hbBasic->app, NULL);
+
+  int32_t code = hbBuildQueryDesc(hbBasic, pTscObj);
+  if (code) {
+    releaseTscObj(connKey->tscRid);
+    taosMemoryFree(hbBasic);
+    return code;
+  }
+
+  req->query = hbBasic;
+  releaseTscObj(connKey->tscRid);
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t hbGetExpiredDBInfo(SClientHbKey *connKey, struct SCatalog *pCatalog, SClientHbReq *req) {
   SDbVgVersion *dbs = NULL;
   uint32_t      dbNum = 0;
@@ -284,6 +402,8 @@ int32_t hbQueryHbReqHandle(SClientHbKey *connKey, void *param, SClientHbReq *req
     return code;
   }
 
+  hbGetQueryBasicInfo(connKey, req);
+  
   code = hbGetExpiredDBInfo(connKey, pCatalog, req);
   if (TSDB_CODE_SUCCESS != code) {
     return code;
@@ -316,6 +436,11 @@ void hbFreeReq(void *req) {
   tFreeReqKvHash(pReq->info);
 }
 
+void hbClearClientHbReq(SClientHbReq *pReq) {
+  pReq->query = NULL;
+  pReq->info = NULL;
+}
+
 SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
   SClientHbBatchReq *pBatchReq = taosMemoryCalloc(1, sizeof(SClientHbBatchReq));
   if (pBatchReq == NULL) {
@@ -334,20 +459,21 @@ SClientHbBatchReq *hbGatherAllInfo(SAppHbMgr *pAppHbMgr) {
     if (info) {
       code = (*clientHbMgr.reqHandle[pOneReq->connKey.hbType])(&pOneReq->connKey, info->param, pOneReq);
       if (code) {
-        taosHashCancelIterate(pAppHbMgr->activeInfo, pIter);
-        break;
+        pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
+        continue;
       }
     }
 
     taosArrayPush(pBatchReq->reqs, pOneReq);
+    hbClearClientHbReq(pOneReq);
 
     pIter = taosHashIterate(pAppHbMgr->activeInfo, pIter);
   }
 
-  if (code) {
-    taosArrayDestroyEx(pBatchReq->reqs, hbFreeReq);
-    taosMemoryFreeClear(pBatchReq);
-  }
+//  if (code) {
+//    taosArrayDestroyEx(pBatchReq->reqs, hbFreeReq);
+//    taosMemoryFreeClear(pBatchReq);
+//  }
 
   return pBatchReq;
 }
@@ -548,7 +674,7 @@ int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, SHbConnInfo *
   if (data != NULL) {
     return 0;
   }
-  SClientHbReq hbReq;
+  SClientHbReq hbReq = {0};
   hbReq.connKey = connKey;
   hbReq.info = taosHashInit(64, hbKeyHashFunc, 1, HASH_ENTRY_LOCK);
 
@@ -565,9 +691,9 @@ int hbRegisterConnImpl(SAppHbMgr *pAppHbMgr, SClientHbKey connKey, SHbConnInfo *
   return 0;
 }
 
-int hbRegisterConn(SAppHbMgr *pAppHbMgr, int32_t connId, int64_t clusterId, int32_t hbType) {
+int hbRegisterConn(SAppHbMgr *pAppHbMgr, int64_t tscRefId, int64_t clusterId, int32_t hbType) {
   SClientHbKey connKey = {
-      .connId = connId,
+      .tscRid = tscRefId,
       .hbType = HEARTBEAT_TYPE_QUERY,
   };
   SHbConnInfo info = {0};
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index b311060ea9..2c58094b4d 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -458,7 +458,7 @@ STscObj* taosConnectImpl(const char* user, const char* auth, const char* db, __t
     taos_close(pTscObj);
     pTscObj = NULL;
   } else {
-    tscDebug("0x%" PRIx64 " connection is opening, connId:%d, dnodeConn:%p, reqId:0x%" PRIx64, pTscObj->id,
+    tscDebug("0x%" PRIx64 " connection is opening, connId:%u, dnodeConn:%p, reqId:0x%" PRIx64, pTscObj->id,
              pTscObj->connId, pTscObj->pAppInfo->pTransporter, pRequest->requestId);
     destroyRequest(pRequest);
   }
diff --git a/source/client/src/clientMain.c b/source/client/src/clientMain.c
index e10cf5179e..76257a7c0e 100644
--- a/source/client/src/clientMain.c
+++ b/source/client/src/clientMain.c
@@ -14,6 +14,7 @@
  */
 
 #include "catalog.h"
+#include "scheduler.h"
 #include "clientInt.h"
 #include "clientLog.h"
 #include "os.h"
@@ -66,6 +67,7 @@ void taos_cleanup(void) {
 
   rpcCleanup();
   catalogDestroy();
+  schedulerDestroy();
   taosCloseLog();
 
   tscInfo("all local resources released");
@@ -98,7 +100,7 @@ void taos_close(TAOS *taos) {
   STscObj *pTscObj = (STscObj *)taos;
   tscDebug("0x%" PRIx64 " try to close connection, numOfReq:%d", pTscObj->id, pTscObj->numOfReqs);
 
-  /*taosRemoveRef(clientConnRefPool, pTscObj->id);*/
+  taosRemoveRef(clientConnRefPool, pTscObj->id);
 }
 
 int taos_errno(TAOS_RES *tres) {
@@ -366,7 +368,7 @@ void taos_stop_query(TAOS_RES *res) {
     return;
   }
 
-  //  scheduleCancelJob(pRequest->body.pQueryJob);
+  schedulerFreeJob(pRequest->body.queryJob);
 }
 
 bool taos_is_null(TAOS_RES *res, int32_t row, int32_t col) {
diff --git a/source/client/src/clientMsgHandler.c b/source/client/src/clientMsgHandler.c
index 4314391743..ca4c681304 100644
--- a/source/client/src/clientMsgHandler.c
+++ b/source/client/src/clientMsgHandler.c
@@ -71,7 +71,7 @@ int32_t processConnectRsp(void* param, const SDataBuf* pMsg, int32_t code) {
 
   pTscObj->connType = HEARTBEAT_TYPE_QUERY;
 
-  hbRegisterConn(pTscObj->pAppInfo->pAppHbMgr, connectRsp.connId, connectRsp.clusterId, HEARTBEAT_TYPE_QUERY);
+  hbRegisterConn(pTscObj->pAppInfo->pAppHbMgr, pTscObj->id, connectRsp.clusterId, HEARTBEAT_TYPE_QUERY);
 
   //  pRequest->body.resInfo.pRspMsg = pMsg->pData;
   tscDebug("0x%" PRIx64 " clusterId:%" PRId64 ", totalConn:%" PRId64, pRequest->requestId, connectRsp.clusterId,
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 5973a70b59..92fa9b8e97 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -134,6 +134,42 @@ void *taosDecodeSEpSet(void *buf, SEpSet *pEp) {
 static int32_t tSerializeSClientHbReq(SCoder *pEncoder, const SClientHbReq *pReq) {
   if (tEncodeSClientHbKey(pEncoder, &pReq->connKey) < 0) return -1;
 
+  if (pReq->connKey.hbType == HEARTBEAT_TYPE_QUERY) {
+    int32_t queryNum = 0;
+    if (pReq->query) {
+      queryNum = 1;
+      if (tEncodeI32(pEncoder, queryNum) < 0) return -1;
+      if (tEncodeU32(pEncoder, pReq->query->connId) < 0) return -1;
+      if (tEncodeI32(pEncoder, pReq->query->pid) < 0) return -1;
+      if (tEncodeCStr(pEncoder, pReq->query->app) < 0) return -1;
+      
+      int32_t num = taosArrayGetSize(pReq->query->queryDesc);
+      if (tEncodeI32(pEncoder, num) < 0) return -1;
+      
+      for (int32_t i = 0; i < num; ++i) {
+        SQueryDesc *desc = taosArrayGet(pReq->query->queryDesc, i);
+        if (tEncodeCStr(pEncoder, desc->sql) < 0) return -1;
+        if (tEncodeU64(pEncoder, desc->queryId) < 0) return -1;
+        if (tEncodeI64(pEncoder, desc->useconds) < 0) return -1;
+        if (tEncodeI64(pEncoder, desc->stime) < 0) return -1;
+        if (tEncodeI64(pEncoder, desc->reqRid) < 0) return -1;
+        if (tEncodeI32(pEncoder, desc->pid) < 0) return -1;
+        if (tEncodeCStr(pEncoder, desc->fqdn) < 0) return -1;
+        if (tEncodeI32(pEncoder, desc->subPlanNum) < 0) return -1;
+
+        int32_t snum = desc->subDesc ? taosArrayGetSize(desc->subDesc) : 0;
+        if (tEncodeI32(pEncoder, snum) < 0) return -1;
+        for (int32_t m = 0; m < snum; ++m) {
+          SQuerySubDesc *sDesc = taosArrayGet(desc->subDesc, m);
+          if (tEncodeI64(pEncoder, sDesc->tid) < 0) return -1;
+          if (tEncodeI32(pEncoder, sDesc->status) < 0) return -1;
+        }
+      }
+    } else {
+      if (tEncodeI32(pEncoder, queryNum) < 0) return -1;
+    }
+  }
+  
   int32_t kvNum = taosHashGetSize(pReq->info);
   if (tEncodeI32(pEncoder, kvNum) < 0) return -1;
   void *pIter = taosHashIterate(pReq->info, NULL);
@@ -149,6 +185,53 @@ static int32_t tSerializeSClientHbReq(SCoder *pEncoder, const SClientHbReq *pReq
 static int32_t tDeserializeSClientHbReq(SCoder *pDecoder, SClientHbReq *pReq) {
   if (tDecodeSClientHbKey(pDecoder, &pReq->connKey) < 0) return -1;
 
+  if (pReq->connKey.hbType == HEARTBEAT_TYPE_QUERY) {
+    int32_t queryNum = 0;
+    if (tDecodeI32(pDecoder, &queryNum) < 0) return -1;
+    if (queryNum) {
+      pReq->query = taosMemoryCalloc(1, sizeof(*pReq->query));
+      if (NULL == pReq->query) return -1;
+      if (tDecodeU32(pDecoder, &pReq->query->connId) < 0) return -1;
+      if (tDecodeI32(pDecoder, &pReq->query->pid) < 0) return -1;
+      if (tDecodeCStrTo(pDecoder, pReq->query->app) < 0) return -1;
+
+      int32_t num = 0;
+      if (tDecodeI32(pDecoder, &num) < 0) return -1;
+      if (num > 0) {
+        pReq->query->queryDesc = taosArrayInit(num, sizeof(SQueryDesc));
+        if (NULL == pReq->query->queryDesc) return -1;
+        
+        for (int32_t i = 0; i < num; ++i) {
+          SQueryDesc desc = {0};
+          if (tDecodeCStrTo(pDecoder, desc.sql) < 0) return -1;
+          if (tDecodeU64(pDecoder, &desc.queryId) < 0) return -1;
+          if (tDecodeI64(pDecoder, &desc.useconds) < 0) return -1;
+          if (tDecodeI64(pDecoder, &desc.stime) < 0) return -1;
+          if (tDecodeI64(pDecoder, &desc.reqRid) < 0) return -1;
+          if (tDecodeI32(pDecoder, &desc.pid) < 0) return -1;
+          if (tDecodeCStrTo(pDecoder, desc.fqdn) < 0) return -1;
+          if (tDecodeI32(pDecoder, &desc.subPlanNum) < 0) return -1;
+
+          int32_t snum = 0;
+          if (tDecodeI32(pDecoder, &snum) < 0) return -1;
+          if (snum > 0) {
+            desc.subDesc = taosArrayInit(snum, sizeof(SQuerySubDesc));
+            if (NULL == desc.subDesc) return -1;
+            
+            for (int32_t m = 0; m < snum; ++m) {
+              SQuerySubDesc sDesc = {0};
+              if (tDecodeI64(pDecoder, &sDesc.tid) < 0) return -1;
+              if (tDecodeI32(pDecoder, &sDesc.status) < 0) return -1;
+              taosArrayPush(desc.subDesc, &sDesc);
+            }
+          }
+
+          taosArrayPush(pReq->query->queryDesc, &desc);
+        }
+      }
+    }
+  }
+
   int32_t kvNum = 0;
   if (tDecodeI32(pDecoder, &kvNum) < 0) return -1;
   if (pReq->info == NULL) {
@@ -168,6 +251,20 @@ static int32_t tSerializeSClientHbRsp(SCoder *pEncoder, const SClientHbRsp *pRsp
   if (tEncodeSClientHbKey(pEncoder, &pRsp->connKey) < 0) return -1;
   if (tEncodeI32(pEncoder, pRsp->status) < 0) return -1;
 
+  int32_t queryNum = 0;
+  if (pRsp->query) {
+    queryNum = 1;
+    if (tEncodeI32(pEncoder, queryNum) < 0) return -1;  
+    if (tEncodeU32(pEncoder, pRsp->query->connId) < 0) return -1;
+    if (tEncodeU64(pEncoder, pRsp->query->killRid) < 0) return -1;
+    if (tEncodeI32(pEncoder, pRsp->query->totalDnodes) < 0) return -1;
+    if (tEncodeI32(pEncoder, pRsp->query->onlineDnodes) < 0) return -1;
+    if (tEncodeI8(pEncoder, pRsp->query->killConnection) < 0) return -1;
+    if (tEncodeSEpSet(pEncoder, &pRsp->query->epSet) < 0) return -1;
+  } else {
+    if (tEncodeI32(pEncoder, queryNum) < 0) return -1;  
+  }
+  
   int32_t kvNum = taosArrayGetSize(pRsp->info);
   if (tEncodeI32(pEncoder, kvNum) < 0) return -1;
   for (int32_t i = 0; i < kvNum; i++) {
@@ -182,6 +279,19 @@ static int32_t tDeserializeSClientHbRsp(SCoder *pDecoder, SClientHbRsp *pRsp) {
   if (tDecodeSClientHbKey(pDecoder, &pRsp->connKey) < 0) return -1;
   if (tDecodeI32(pDecoder, &pRsp->status) < 0) return -1;
 
+  int32_t queryNum = 0;
+  if (tDecodeI32(pDecoder, &queryNum) < 0) return -1;
+  if (queryNum) {
+    pRsp->query = taosMemoryCalloc(1, sizeof(*pRsp->query));
+    if (NULL == pRsp->query) return -1;
+    if (tDecodeU32(pDecoder, &pRsp->query->connId) < 0) return -1;
+    if (tDecodeU64(pDecoder, &pRsp->query->killRid) < 0) return -1;
+    if (tDecodeI32(pDecoder, &pRsp->query->totalDnodes) < 0) return -1;
+    if (tDecodeI32(pDecoder, &pRsp->query->onlineDnodes) < 0) return -1;
+    if (tDecodeI8(pDecoder, &pRsp->query->killConnection) < 0) return -1;
+    if (tDecodeSEpSet(pDecoder, &pRsp->query->epSet) < 0) return -1;
+  }
+
   int32_t kvNum = 0;
   if (tDecodeI32(pDecoder, &kvNum) < 0) return -1;
   pRsp->info = taosArrayInit(kvNum, sizeof(SKv));
@@ -224,8 +334,9 @@ int32_t tDeserializeSClientHbBatchReq(void *buf, int32_t bufLen, SClientHbBatchR
 
   int32_t reqNum = 0;
   if (tDecodeI32(&decoder, &reqNum) < 0) return -1;
-  if (pBatchReq->reqs == NULL) {
+  if (reqNum > 0) {
     pBatchReq->reqs = taosArrayInit(reqNum, sizeof(SClientHbReq));
+    if (NULL == pBatchReq->reqs) return -1;
   }
   for (int32_t i = 0; i < reqNum; i++) {
     SClientHbReq req = {0};
@@ -2564,7 +2675,7 @@ int32_t tSerializeSConnectRsp(void *buf, int32_t bufLen, SConnectRsp *pRsp) {
   if (tStartEncode(&encoder) < 0) return -1;
   if (tEncodeI32(&encoder, pRsp->acctId) < 0) return -1;
   if (tEncodeI64(&encoder, pRsp->clusterId) < 0) return -1;
-  if (tEncodeI32(&encoder, pRsp->connId) < 0) return -1;
+  if (tEncodeU32(&encoder, pRsp->connId) < 0) return -1;
   if (tEncodeI8(&encoder, pRsp->superUser) < 0) return -1;
   if (tEncodeSEpSet(&encoder, &pRsp->epSet) < 0) return -1;
   if (tEncodeCStr(&encoder, pRsp->sVersion) < 0) return -1;
@@ -2582,7 +2693,7 @@ int32_t tDeserializeSConnectRsp(void *buf, int32_t bufLen, SConnectRsp *pRsp) {
   if (tStartDecode(&decoder) < 0) return -1;
   if (tDecodeI32(&decoder, &pRsp->acctId) < 0) return -1;
   if (tDecodeI64(&decoder, &pRsp->clusterId) < 0) return -1;
-  if (tDecodeI32(&decoder, &pRsp->connId) < 0) return -1;
+  if (tDecodeU32(&decoder, &pRsp->connId) < 0) return -1;
   if (tDecodeI8(&decoder, &pRsp->superUser) < 0) return -1;
   if (tDecodeSEpSet(&decoder, &pRsp->epSet) < 0) return -1;
   if (tDecodeCStrTo(&decoder, pRsp->sVersion) < 0) return -1;
diff --git a/source/dnode/mnode/impl/inc/mndInt.h b/source/dnode/mnode/impl/inc/mndInt.h
index fa1502fe10..ad42eebc1b 100644
--- a/source/dnode/mnode/impl/inc/mndInt.h
+++ b/source/dnode/mnode/impl/inc/mndInt.h
@@ -75,7 +75,6 @@ typedef struct {
 } SShowMgmt;
 
 typedef struct {
-  int32_t    connId;
   SCacheObj *cache;
 } SProfileMgmt;
 
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index 49e9ccaba6..fe75e6c60c 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -1128,6 +1128,8 @@ static int32_t mndProcessUseDbReq(SNodeMsg *pReq) {
 
       if (taosArrayGetSize(usedbRsp.pVgroupInfos) <= 0) {
         terrno = TSDB_CODE_MND_DB_NOT_EXIST;
+      } else {
+        code = 0;
       }
     } else {
       usedbRsp.vgVersion = usedbReq.vgVersion;
diff --git a/source/dnode/mnode/impl/src/mndProfile.c b/source/dnode/mnode/impl/src/mndProfile.c
index 320671c332..b036b857e5 100644
--- a/source/dnode/mnode/impl/src/mndProfile.c
+++ b/source/dnode/mnode/impl/src/mndProfile.c
@@ -29,7 +29,7 @@
 #define QUERY_SAVE_SIZE 20
 
 typedef struct {
-  int32_t     id;
+  uint32_t    id;
   char        user[TSDB_USER_LEN];
   char        app[TSDB_APP_NAME_LEN];  // app name that invokes taosc
   int64_t     appStartTimeMs;          // app start time
@@ -39,15 +39,15 @@ typedef struct {
   int8_t      killed;
   int64_t     loginTimeMs;
   int64_t     lastAccessTimeMs;
-  int32_t     queryId;
+  uint64_t    killId;
   int32_t     numOfQueries;
-  SQueryDesc *pQueries;
+  SArray     *pQueries;      //SArray<SQueryDesc>
 } SConnObj;
 
 static SConnObj *mndCreateConn(SMnode *pMnode, const char *user, uint32_t ip, uint16_t port, int32_t pid,
                                const char *app, int64_t startTime);
 static void      mndFreeConn(SConnObj *pConn);
-static SConnObj *mndAcquireConn(SMnode *pMnode, int32_t connId);
+static SConnObj *mndAcquireConn(SMnode *pMnode, uint32_t connId);
 static void      mndReleaseConn(SMnode *pMnode, SConnObj *pConn);
 static void     *mndGetNextConn(SMnode *pMnode, SCacheIter *pIter);
 static void      mndCancelGetNextConn(SMnode *pMnode, void *pIter);
@@ -97,8 +97,9 @@ static SConnObj *mndCreateConn(SMnode *pMnode, const char *user, uint32_t ip, ui
                                const char *app, int64_t startTime) {
   SProfileMgmt *pMgmt = &pMnode->profileMgmt;
 
-  int32_t connId = atomic_add_fetch_32(&pMgmt->connId, 1);
-  if (connId == 0) atomic_add_fetch_32(&pMgmt->connId, 1);
+  char connStr[255] = {0};
+  int32_t len = snprintf(connStr, sizeof(connStr), "%s%d%d%d%s", user, ip, port, pid, app);
+  int32_t connId = mndGenerateUid(connStr, len);
   if (startTime == 0) startTime = taosGetTimestampMs();
 
   SConnObj connObj = {.id = connId,
@@ -109,7 +110,7 @@ static SConnObj *mndCreateConn(SMnode *pMnode, const char *user, uint32_t ip, ui
                       .killed = 0,
                       .loginTimeMs = taosGetTimestampMs(),
                       .lastAccessTimeMs = 0,
-                      .queryId = 0,
+                      .killId = 0,
                       .numOfQueries = 0,
                       .pQueries = NULL};
 
@@ -124,35 +125,35 @@ static SConnObj *mndCreateConn(SMnode *pMnode, const char *user, uint32_t ip, ui
     mError("conn:%d, failed to put into cache since %s, user:%s", connId, user, terrstr());
     return NULL;
   } else {
-    mTrace("conn:%d, is created, data:%p user:%s", pConn->id, pConn, user);
+    mTrace("conn:%u, is created, data:%p user:%s", pConn->id, pConn, user);
     return pConn;
   }
 }
 
 static void mndFreeConn(SConnObj *pConn) {
   taosMemoryFreeClear(pConn->pQueries);
-  mTrace("conn:%d, is destroyed, data:%p", pConn->id, pConn);
+  mTrace("conn:%u, is destroyed, data:%p", pConn->id, pConn);
 }
 
-static SConnObj *mndAcquireConn(SMnode *pMnode, int32_t connId) {
+static SConnObj *mndAcquireConn(SMnode *pMnode, uint32_t connId) {
   SProfileMgmt *pMgmt = &pMnode->profileMgmt;
 
-  SConnObj *pConn = taosCacheAcquireByKey(pMgmt->cache, &connId, sizeof(int32_t));
+  SConnObj *pConn = taosCacheAcquireByKey(pMgmt->cache, &connId, sizeof(connId));
   if (pConn == NULL) {
-    mDebug("conn:%d, already destroyed", connId);
+    mDebug("conn:%u, already destroyed", connId);
     return NULL;
   }
 
   int32_t keepTime = tsShellActivityTimer * 3;
   pConn->lastAccessTimeMs = keepTime * 1000 + (uint64_t)taosGetTimestampMs();
 
-  mTrace("conn:%d, acquired from cache, data:%p", pConn->id, pConn);
+  mTrace("conn:%u, acquired from cache, data:%p", pConn->id, pConn);
   return pConn;
 }
 
 static void mndReleaseConn(SMnode *pMnode, SConnObj *pConn) {
   if (pConn == NULL) return;
-  mTrace("conn:%d, released from cache, data:%p", pConn->id, pConn);
+  mTrace("conn:%u, released from cache, data:%p", pConn->id, pConn);
 
   SProfileMgmt *pMgmt = &pMnode->profileMgmt;
   taosCacheRelease(pMgmt->cache, (void **)&pConn, false);
@@ -217,6 +218,8 @@ static int32_t mndProcessConnectReq(SNodeMsg *pReq) {
     goto CONN_OVER;
   }
 
+  mndAcquireConn(pMnode, pConn->id);
+
   SConnectRsp connectRsp = {0};
   connectRsp.acctId = pUser->acctId;
   connectRsp.superUser = pUser->superUser;
@@ -236,7 +239,7 @@ static int32_t mndProcessConnectReq(SNodeMsg *pReq) {
   pReq->rspLen = contLen;
   pReq->pRsp = pRsp;
 
-  mDebug("user:%s, login from %s, conn:%d, app:%s", pReq->user, ip, pConn->id, connReq.app);
+  mDebug("user:%s, login from %s:%d, conn:%u, app:%s", pReq->user, ip, pConn->port, pConn->id, connReq.app);
 
   code = 0;
 
@@ -249,22 +252,13 @@ CONN_OVER:
   return code;
 }
 
-static int32_t mndSaveQueryStreamList(SConnObj *pConn, SHeartBeatReq *pReq) {
-  pConn->numOfQueries = 0;
-  int32_t numOfQueries = htonl(pReq->numOfQueries);
+static int32_t mndSaveQueryList(SConnObj *pConn, SQueryHbReqBasic *pBasic) {
+  taosArrayDestroyEx(pConn->pQueries, tFreeClientHbQueryDesc);
 
-  if (numOfQueries > 0) {
-    if (pConn->pQueries == NULL) {
-      pConn->pQueries = taosMemoryCalloc(sizeof(SQueryDesc), QUERY_SAVE_SIZE);
-    }
-
-    pConn->numOfQueries = TMIN(QUERY_SAVE_SIZE, numOfQueries);
-
-    int32_t saveSize = pConn->numOfQueries * sizeof(SQueryDesc);
-    if (saveSize > 0 && pConn->pQueries != NULL) {
-      memcpy(pConn->pQueries, pReq->pData, saveSize);
-    }
-  }
+  pConn->pQueries = pBasic->queryDesc;
+  pBasic->queryDesc = NULL;
+  
+  pConn->numOfQueries =  pBasic->queryDesc ? taosArrayGetSize(pBasic->queryDesc) : 0;
 
   return TSDB_CODE_SUCCESS;
 }
@@ -334,6 +328,111 @@ static SClientHbRsp *mndMqHbBuildRsp(SMnode *pMnode, SClientHbReq *pReq) {
   return NULL;
 }
 
+static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHbReq *pHbReq, SClientHbBatchRsp *pBatchRsp) {
+  SProfileMgmt *pMgmt = &pMnode->profileMgmt;
+  SClientHbRsp hbRsp = {.connKey = pHbReq->connKey, .status = 0, .info = NULL, .query = NULL};
+
+  if (pHbReq->query) {
+    SQueryHbReqBasic *pBasic = pHbReq->query;
+
+    SRpcConnInfo connInfo = {0};
+    rpcGetConnInfo(pMsg->handle, &connInfo);
+
+    SConnObj *pConn = mndAcquireConn(pMnode, pBasic->connId);
+    if (pConn == NULL) {    
+      pConn = mndCreateConn(pMnode, connInfo.user, connInfo.clientIp, connInfo.clientPort, pBasic->pid, pBasic->app, 0);
+      if (pConn == NULL) {
+        mError("user:%s, conn:%u is freed and failed to create new since %s", connInfo.user, pBasic->connId, terrstr());
+        return -1;
+      } else {
+        mDebug("user:%s, conn:%u is freed and create a new conn:%u", connInfo.user, pBasic->connId, pConn->id);
+      }
+    } else if (pConn->killed) {
+      mError("user:%s, conn:%u is already killed", connInfo.user, pConn->id);
+      mndReleaseConn(pMnode, pConn);      
+      terrno = TSDB_CODE_MND_INVALID_CONNECTION;
+      return -1;
+    }
+
+    SQueryHbRspBasic *rspBasic = taosMemoryCalloc(1, sizeof(SQueryHbRspBasic));
+    if (rspBasic == NULL) {
+      mndReleaseConn(pMnode, pConn);
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      mError("user:%s, conn:%u failed to process hb while since %s", pConn->user, pBasic->connId, terrstr());
+      return -1;
+    }
+
+    mndSaveQueryList(pConn, pBasic);
+    if (pConn->killed != 0) {
+      rspBasic->killConnection = 1;
+    }
+
+    if (pConn->killId != 0) {
+      rspBasic->killRid = pConn->killId;
+      pConn->killId = 0;
+    }
+
+    rspBasic->connId = pConn->id;
+    rspBasic->totalDnodes = 1;  //TODO
+    rspBasic->onlineDnodes = 1; //TODO
+    mndGetMnodeEpSet(pMnode, &rspBasic->epSet);
+    mndReleaseConn(pMnode, pConn);
+
+    hbRsp.query = rspBasic;
+  }
+
+  int32_t kvNum = taosHashGetSize(pHbReq->info);
+  if (NULL == pHbReq->info || kvNum <= 0) {
+    taosArrayPush(pBatchRsp->rsps, &hbRsp);  
+    return TSDB_CODE_SUCCESS;
+  }
+
+  hbRsp.info = taosArrayInit(kvNum, sizeof(SKv));
+  if (NULL == hbRsp.info) {
+    mError("taosArrayInit %d rsp kv failed", kvNum);
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
+  }
+
+  void *pIter = taosHashIterate(pHbReq->info, NULL);
+  while (pIter != NULL) {
+    SKv *kv = pIter;
+
+    switch (kv->key) {
+      case HEARTBEAT_KEY_DBINFO: {
+        void   *rspMsg = NULL;
+        int32_t rspLen = 0;
+        mndValidateDbInfo(pMnode, kv->value, kv->valueLen / sizeof(SDbVgVersion), &rspMsg, &rspLen);
+        if (rspMsg && rspLen > 0) {
+          SKv kv1 = {.key = HEARTBEAT_KEY_DBINFO, .valueLen = rspLen, .value = rspMsg};
+          taosArrayPush(hbRsp.info, &kv1);
+        }
+        break;
+      }
+      case HEARTBEAT_KEY_STBINFO: {
+        void   *rspMsg = NULL;
+        int32_t rspLen = 0;
+        mndValidateStbInfo(pMnode, kv->value, kv->valueLen / sizeof(SSTableMetaVersion), &rspMsg, &rspLen);
+        if (rspMsg && rspLen > 0) {
+          SKv kv1 = {.key = HEARTBEAT_KEY_STBINFO, .valueLen = rspLen, .value = rspMsg};
+          taosArrayPush(hbRsp.info, &kv1);
+        }
+        break;
+      }
+      default:
+        mError("invalid kv key:%d", kv->key);
+        hbRsp.status = TSDB_CODE_MND_APP_ERROR;
+        break;
+    }
+
+    pIter = taosHashIterate(pHbReq->info, pIter);
+  }
+
+  taosArrayPush(pBatchRsp->rsps, &hbRsp);
+
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t mndProcessHeartBeatReq(SNodeMsg *pReq) {
   SMnode *pMnode = pReq->pNode;
 
@@ -351,48 +450,7 @@ static int32_t mndProcessHeartBeatReq(SNodeMsg *pReq) {
   for (int i = 0; i < sz; i++) {
     SClientHbReq *pHbReq = taosArrayGet(batchReq.reqs, i);
     if (pHbReq->connKey.hbType == HEARTBEAT_TYPE_QUERY) {
-      int32_t kvNum = taosHashGetSize(pHbReq->info);
-      if (NULL == pHbReq->info || kvNum <= 0) {
-        continue;
-      }
-
-      SClientHbRsp hbRsp = {.connKey = pHbReq->connKey, .status = 0, .info = taosArrayInit(kvNum, sizeof(SKv))};
-
-      void *pIter = taosHashIterate(pHbReq->info, NULL);
-      while (pIter != NULL) {
-        SKv *kv = pIter;
-
-        switch (kv->key) {
-          case HEARTBEAT_KEY_DBINFO: {
-            void   *rspMsg = NULL;
-            int32_t rspLen = 0;
-            mndValidateDbInfo(pMnode, kv->value, kv->valueLen / sizeof(SDbVgVersion), &rspMsg, &rspLen);
-            if (rspMsg && rspLen > 0) {
-              SKv kv1 = {.key = HEARTBEAT_KEY_DBINFO, .valueLen = rspLen, .value = rspMsg};
-              taosArrayPush(hbRsp.info, &kv1);
-            }
-            break;
-          }
-          case HEARTBEAT_KEY_STBINFO: {
-            void   *rspMsg = NULL;
-            int32_t rspLen = 0;
-            mndValidateStbInfo(pMnode, kv->value, kv->valueLen / sizeof(SSTableMetaVersion), &rspMsg, &rspLen);
-            if (rspMsg && rspLen > 0) {
-              SKv kv1 = {.key = HEARTBEAT_KEY_STBINFO, .valueLen = rspLen, .value = rspMsg};
-              taosArrayPush(hbRsp.info, &kv1);
-            }
-            break;
-          }
-          default:
-            mError("invalid kv key:%d", kv->key);
-            hbRsp.status = TSDB_CODE_MND_APP_ERROR;
-            break;
-        }
-
-        pIter = taosHashIterate(pHbReq->info, pIter);
-      }
-
-      taosArrayPush(batchRsp.rsps, &hbRsp);
+      mndProcessQueryHeartBeat(pMnode, &pReq->rpcMsg, pHbReq, &batchRsp);
     } else if (pHbReq->connKey.hbType == HEARTBEAT_TYPE_MQ) {
       SClientHbRsp *pRsp = mndMqHbBuildRsp(pMnode, pHbReq);
       if (pRsp != NULL) {
@@ -421,73 +479,8 @@ static int32_t mndProcessHeartBeatReq(SNodeMsg *pReq) {
   taosArrayDestroy(batchRsp.rsps);
   pReq->rspLen = tlen;
   pReq->pRsp = buf;
+
   return 0;
-
-#if 0
-  SMnode       *pMnode = pReq->pNode;
-  SProfileMgmt *pMgmt = &pMnode->profileMgmt;
-
-  SHeartBeatReq *pHeartbeat = pReq->rpcMsg.pCont;
-  pHeartbeat->connId = htonl(pHeartbeat->connId);
-  pHeartbeat->pid = htonl(pHeartbeat->pid);
-
-  SConnObj *pConn = mndAcquireConn(pMnode, pHeartbeat->connId);
-  if (pConn == NULL) {
-    pConn = mndCreateConn(pMnode, &info, pHeartbeat->pid, pHeartbeat->app, 0);
-    if (pConn == NULL) {
-      mError("user:%s, conn:%d is freed and failed to create new since %s", pReq->user, pHeartbeat->connId, terrstr());
-      return -1;
-    } else {
-      mDebug("user:%s, conn:%d is freed and create a new conn:%d", pReq->user, pHeartbeat->connId, pConn->id);
-    }
-  } else if (pConn->killed) {
-    mError("user:%s, conn:%d is already killed", pReq->user, pConn->id);
-    terrno = TSDB_CODE_MND_INVALID_CONNECTION;
-    return -1;
-  } else {
-    if (pConn->ip != info.clientIp || pConn->port != info.clientPort /* || strcmp(pConn->user, info.user) != 0 */) {
-      char oldIpStr[40];
-      char newIpStr[40];
-      taosIpPort2String(pConn->ip, pConn->port, oldIpStr);
-      taosIpPort2String(info.clientIp, info.clientPort, newIpStr);
-      mError("conn:%d, incoming conn user:%s ip:%s, not match exist user:%s ip:%s", pConn->id, info.user, newIpStr,
-             pConn->user, oldIpStr);
-
-      if (pMgmt->connId < pConn->id) pMgmt->connId = pConn->id + 1;
-      taosCacheRelease(pMgmt->cache, (void **)&pConn, false);
-      terrno = TSDB_CODE_MND_INVALID_CONNECTION;
-      return -1;
-    }
-  }
-
-  SHeartBeatRsp *pRsp = rpcMallocCont(sizeof(SHeartBeatRsp));
-  if (pRsp == NULL) {
-    mndReleaseConn(pMnode, pConn);
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    mError("user:%s, conn:%d failed to process hb while since %s", pReq->user, pHeartbeat->connId, terrstr());
-    return -1;
-  }
-
-  mndSaveQueryStreamList(pConn, pHeartbeat);
-  if (pConn->killed != 0) {
-    pRsp->killConnection = 1;
-  }
-
-  if (pConn->queryId != 0) {
-    pRsp->queryId = htonl(pConn->queryId);
-    pConn->queryId = 0;
-  }
-
-  pRsp->connId = htonl(pConn->id);
-  pRsp->totalDnodes = htonl(1);
-  pRsp->onlineDnodes = htonl(1);
-  mndGetMnodeEpSet(pMnode, &pRsp->epSet);
-  mndReleaseConn(pMnode, pConn);
-
-  pReq->contLen = sizeof(SConnectRsp);
-  pReq->pRsp = pRsp;
-  return 0;
-#endif
 }
 
 static int32_t mndProcessKillQueryReq(SNodeMsg *pReq) {
@@ -518,7 +511,7 @@ static int32_t mndProcessKillQueryReq(SNodeMsg *pReq) {
     return -1;
   } else {
     mInfo("connId:%d, queryId:%d is killed by user:%s", killReq.connId, killReq.queryId, pReq->user);
-    pConn->queryId = killReq.queryId;
+    pConn->killId = killReq.queryId;
     taosCacheRelease(pMgmt->cache, (void **)&pConn, false);
     return 0;
   }
@@ -651,7 +644,7 @@ static int32_t mndRetrieveConns(SNodeMsg *pReq, SShowObj *pShow, char *data, int
     cols = 0;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    *(int32_t *)pWrite = pConn->id;
+    *(uint32_t *)pWrite = pConn->id;
     cols++;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
@@ -808,6 +801,7 @@ static int32_t mndGetQueryMeta(SNodeMsg *pReq, SShowObj *pShow, STableMetaRsp *p
 static int32_t mndRetrieveQueries(SNodeMsg *pReq, SShowObj *pShow, char *data, int32_t rows) {
   SMnode   *pMnode = pReq->pNode;
   int32_t   numOfRows = 0;
+#if 0
   SConnObj *pConn = NULL;
   int32_t   cols = 0;
   char     *pWrite;
@@ -905,6 +899,7 @@ static int32_t mndRetrieveQueries(SNodeMsg *pReq, SShowObj *pShow, char *data, i
 
   mndVacuumResult(data, pShow->numOfColumns, numOfRows, rows, pShow);
   pShow->numOfReads += numOfRows;
+#endif  
   return numOfRows;
 }
 
@@ -917,4 +912,4 @@ static void mndCancelGetNextQuery(SMnode *pMnode, void *pIter) {
 int32_t mndGetNumOfConnections(SMnode *pMnode) {
   SProfileMgmt *pMgmt = &pMnode->profileMgmt;
   return taosCacheGetNumOfObj(pMgmt->cache);
-}
\ No newline at end of file
+}
diff --git a/source/libs/scheduler/inc/schedulerInt.h b/source/libs/scheduler/inc/schedulerInt.h
index 62a96b6438..d1def1bef1 100644
--- a/source/libs/scheduler/inc/schedulerInt.h
+++ b/source/libs/scheduler/inc/schedulerInt.h
@@ -156,8 +156,8 @@ typedef struct SSchJob {
   int32_t          levelNum;
   int32_t          taskNum;
   void            *transport;
-  SArray          *nodeList;   // qnode/vnode list, element is SQueryNodeAddr
-  SArray          *levels;    // Element is SQueryLevel, starting from 0. SArray<SSchLevel>
+  SArray          *nodeList;   // qnode/vnode list, SArray<SQueryNodeAddr>
+  SArray          *levels;    // starting from 0. SArray<SSchLevel>
   SNodeList       *subPlans;  // subplan pointer copied from DAG, no need to free it in scheduler
 
   int32_t          levelIdx;
diff --git a/source/libs/scheduler/src/scheduler.c b/source/libs/scheduler/src/scheduler.c
index 11f8e880a6..8dd7625325 100644
--- a/source/libs/scheduler/src/scheduler.c
+++ b/source/libs/scheduler/src/scheduler.c
@@ -2655,6 +2655,34 @@ _return:
   SCH_RET(code);
 }
 
+int32_t schedulerGetTasksStatus(int64_t job, SArray *pSub) {
+  int32_t  code = 0;
+  SSchJob *pJob = schAcquireJob(job);
+  if (NULL == pJob) {
+    qDebug("acquire job from jobRef list failed, may not started or dropped, refId:%" PRIx64, job);
+    SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
+  }
+
+  if (pJob->status < JOB_TASK_STATUS_NOT_START || pJob->levelNum <= 0 || NULL == pJob->levels) {
+    qDebug("job not initialized or not executable job, refId:%" PRIx64, job);
+    SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
+  }
+
+  for (int32_t i = pJob->levelNum - 1; i >= 0; --i) {
+    SSchLevel *pLevel = taosArrayGet(pJob->levels, i);
+    
+    for (int32_t m = 0; m < pLevel->taskNum; ++m) {
+      SSchTask *pTask = taosArrayGet(pLevel->subTasks, m);
+      SQuerySubDesc subDesc = {.tid = pTask->taskId, .status = pTask->status};
+      
+      taosArrayPush(pSub, &subDesc);
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t scheduleCancelJob(int64_t job) {
   SSchJob *pJob = schAcquireJob(job);
   if (NULL == pJob) {
@@ -2672,7 +2700,7 @@ int32_t scheduleCancelJob(int64_t job) {
 void schedulerFreeJob(int64_t job) {
   SSchJob *pJob = schAcquireJob(job);
   if (NULL == pJob) {
-    qError("acquire job from jobRef list failed, may be dropped, refId:%" PRIx64, job);
+    qDebug("acquire job from jobRef list failed, may be dropped, refId:%" PRIx64, job);
     return;
   }
 
diff --git a/source/util/src/tarray.c b/source/util/src/tarray.c
index a74b26a386..4477a5cacd 100644
--- a/source/util/src/tarray.c
+++ b/source/util/src/tarray.c
@@ -303,6 +303,21 @@ void taosArrayClear(SArray* pArray) {
   pArray->size = 0;
 }
 
+void taosArrayClearEx(SArray* pArray, void (*fp)(void*)) {
+  if (pArray == NULL) return;
+  if (fp == NULL) {
+    pArray->size = 0;
+    return;
+  }
+
+  for (int32_t i = 0; i < pArray->size; ++i) {
+    fp(TARRAY_GET_ELEM(pArray, i));
+  }
+
+  pArray->size = 0;
+}
+
+
 void* taosArrayDestroy(SArray* pArray) {
   if (pArray) {
     taosMemoryFree(pArray->pData);