diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index b06adf3f2d..d0c84fbfa2 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -2810,6 +2810,9 @@ enum {
   TOPIC_SUB_TYPE__COLUMN,
 };
 
+#define DEFAULT_MAX_POLL_INTERVAL      3000000
+#define DEFAULT_SESSION_TIMEOUT        12000
+
 typedef struct {
   char   name[TSDB_TOPIC_FNAME_LEN];  // accout.topic
   int8_t igExists;
@@ -2832,7 +2835,7 @@ typedef struct {
 typedef struct {
   int64_t consumerId;
   char    cgroup[TSDB_CGROUP_LEN];
-  char    clientId[256];
+  char    clientId[TSDB_CLIENT_ID_LEN];
   SArray* topicNames;  // SArray<char**>
 
   int8_t  withTbName;
@@ -2841,6 +2844,8 @@ typedef struct {
   int8_t  resetOffsetCfg;
   int8_t  enableReplay;
   int8_t  enableBatchMeta;
+  int32_t sessionTimeoutMs;
+  int32_t maxPollIntervalMs;
 } SCMSubscribeReq;
 
 static FORCE_INLINE int32_t tSerializeSCMSubscribeReq(void** buf, const SCMSubscribeReq* pReq) {
@@ -2862,11 +2867,14 @@ static FORCE_INLINE int32_t tSerializeSCMSubscribeReq(void** buf, const SCMSubsc
   tlen += taosEncodeFixedI8(buf, pReq->resetOffsetCfg);
   tlen += taosEncodeFixedI8(buf, pReq->enableReplay);
   tlen += taosEncodeFixedI8(buf, pReq->enableBatchMeta);
+  tlen += taosEncodeFixedI32(buf, pReq->sessionTimeoutMs);
+  tlen += taosEncodeFixedI32(buf, pReq->maxPollIntervalMs);
 
   return tlen;
 }
 
-static FORCE_INLINE int32_t tDeserializeSCMSubscribeReq(void* buf, SCMSubscribeReq* pReq) {
+static FORCE_INLINE int32_t tDeserializeSCMSubscribeReq(void* buf, SCMSubscribeReq* pReq, int32_t len) {
+  void* start = buf;
   buf = taosDecodeFixedI64(buf, &pReq->consumerId);
   buf = taosDecodeStringTo(buf, pReq->cgroup);
   buf = taosDecodeStringTo(buf, pReq->clientId);
@@ -2892,6 +2900,14 @@ static FORCE_INLINE int32_t tDeserializeSCMSubscribeReq(void* buf, SCMSubscribeR
   buf = taosDecodeFixedI8(buf, &pReq->resetOffsetCfg);
   buf = taosDecodeFixedI8(buf, &pReq->enableReplay);
   buf = taosDecodeFixedI8(buf, &pReq->enableBatchMeta);
+  if ((char*)buf - (char*)start < len) {
+    buf = taosDecodeFixedI32(buf, &pReq->sessionTimeoutMs);
+    buf = taosDecodeFixedI32(buf, &pReq->maxPollIntervalMs);
+  } else {
+    pReq->sessionTimeoutMs = DEFAULT_SESSION_TIMEOUT;
+    pReq->maxPollIntervalMs = DEFAULT_MAX_POLL_INTERVAL;
+  }
+
   return 0;
 }
 
@@ -4119,6 +4135,7 @@ typedef struct {
   int64_t consumerId;
   int32_t epoch;
   SArray* topics;
+  int8_t  pollFlag;
 } SMqHbReq;
 
 typedef struct {
diff --git a/include/util/tdef.h b/include/util/tdef.h
index c9677845ac..39c65d2c71 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -221,6 +221,8 @@ typedef enum ELogicConditionType {
 #define TSDB_TABLE_NAME_LEN           193                                // it is a null-terminated string
 #define TSDB_TOPIC_NAME_LEN           193                                // it is a null-terminated string
 #define TSDB_CGROUP_LEN               193                                // it is a null-terminated string
+#define TSDB_CLIENT_ID_LEN            256                                // it is a null-terminated string
+#define TSDB_CONSUMER_ID_LEN          32                                 // it is a null-terminated string
 #define TSDB_OFFSET_LEN               64                                 // it is a null-terminated string
 #define TSDB_USER_CGROUP_LEN          (TSDB_USER_LEN + TSDB_CGROUP_LEN)  // it is a null-terminated string
 #define TSDB_STREAM_NAME_LEN          193                                // it is a null-terminated string
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index a458edcad9..75c1eabe7e 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -2920,8 +2920,10 @@ void taosAsyncFetchImpl(SRequestObj* pRequest, __taos_async_fn_t fp, void* param
       .cbParam = pRequest,
   };
 
-  if (TSDB_CODE_SUCCESS != schedulerFetchRows(pRequest->body.queryJob, &req)) {
-    tscError("0x%" PRIx64 " failed to schedule fetch rows", pRequest->self);
+  int32_t code = schedulerFetchRows(pRequest->body.queryJob, &req);
+  if (TSDB_CODE_SUCCESS != code) {
+    tscError("0x%" PRIx64 " failed to schedule fetch rows", pRequest->requestId);
+    pRequest->body.fetchFp(param, pRequest, code);    
   }
 }
 
diff --git a/source/client/src/clientMonitor.c b/source/client/src/clientMonitor.c
index 92a8fc3b29..4bb29f8d97 100644
--- a/source/client/src/clientMonitor.c
+++ b/source/client/src/clientMonitor.c
@@ -12,13 +12,13 @@
 SRWLatch    monitorLock;
 void*       monitorTimer;
 SHashObj*   monitorCounterHash;
-int32_t     slowLogFlag = -1;
-int32_t     monitorFlag = -1;
+int32_t     monitorFlag = 0;
 int32_t     quitCnt = 0;
 tsem2_t     monitorSem;
 STaosQueue* monitorQueue;
 SHashObj*   monitorSlowLogHash;
 char        tmpSlowLogPath[PATH_MAX] = {0};
+TdThread    monitorThread;
 
 static int32_t getSlowLogTmpDir(char* tmpPath, int32_t size) {
   int ret = snprintf(tmpPath, size, "%s/tdengine_slow_log/", tsTempDir);
@@ -113,11 +113,11 @@ static int32_t monitorReportAsyncCB(void* param, SDataBuf* pMsg, int32_t code) {
       tscError("failed to send slow log:%s, clusterId:%" PRIx64, p->data, p->clusterId);
     }
     MonitorSlowLogData tmp = {.clusterId = p->clusterId,
-                              .type = p->type,
-                              .fileName = p->fileName,
-                              .pFile = p->pFile,
-                              .offset = p->offset,
-                              .data = NULL};
+        .type = p->type,
+        .fileName = p->fileName,
+        .pFile = p->pFile,
+        .offset = p->offset,
+        .data = NULL};
     if (monitorPutData2MonitorQueue(tmp) == 0) {
       p->fileName = NULL;
     }
@@ -164,7 +164,7 @@ static int32_t sendReport(void* pTransporter, SEpSet* epSet, char* pCont, MONITO
   int64_t transporterId = 0;
   return asyncSendMsgToServer(pTransporter, epSet, &transporterId, pInfo);
 
-FAILED:
+  FAILED:
   monitorFreeSlowLogDataEx(param);
   return TAOS_GET_TERRNO(TSDB_CODE_TSC_INTERNAL_ERROR);
 }
@@ -276,12 +276,10 @@ void monitorCreateClient(int64_t clusterId) {
     tscInfo("[monitor] monitorCreateClient for %" PRIx64 "finished %p.", clusterId, pMonitor);
   }
   taosWUnLockLatch(&monitorLock);
-  if (-1 != atomic_val_compare_exchange_32(&monitorFlag, -1, 0)) {
-    tscDebug("[monitor] monitorFlag already is 0");
-  }
+
   return;
 
-fail:
+  fail:
   destroyMonitorClient(&pMonitor);
   taosWUnLockLatch(&monitorLock);
 }
@@ -301,7 +299,7 @@ void monitorCreateClientCounter(int64_t clusterId, const char* name, const char*
     tscError("failed to add metric to collector");
     (void)taos_counter_destroy(newCounter);
     goto end;
-}
+  }
   if (taosHashPut(pMonitor->counters, name, strlen(name), &newCounter, POINTER_BYTES) != 0) {
     tscError("failed to put counter to monitor");
     (void)taos_counter_destroy(newCounter);
@@ -310,7 +308,7 @@ void monitorCreateClientCounter(int64_t clusterId, const char* name, const char*
   tscInfo("[monitor] monitorCreateClientCounter %" PRIx64 "(%p):%s : %p.", pMonitor->clusterId, pMonitor, name,
           newCounter);
 
-end:
+  end:
   taosWUnLockLatch(&monitorLock);
 }
 
@@ -339,7 +337,7 @@ void monitorCounterInc(int64_t clusterId, const char* counterName, const char**
   }
   tscDebug("[monitor] monitorCounterInc %" PRIx64 "(%p):%s", pMonitor->clusterId, pMonitor, counterName);
 
-end:
+  end:
   taosWUnLockLatch(&monitorLock);
 }
 
@@ -348,8 +346,6 @@ const char* monitorResultStr(SQL_RESULT_CODE code) {
   return result_state[code];
 }
 
-static void monitorThreadFuncUnexpectedStopped(void) { atomic_store_32(&slowLogFlag, -1); }
-
 static void monitorWriteSlowLog2File(MonitorSlowLogData* slowLogData, char* tmpPath) {
   TdFilePtr pFile = NULL;
   void*     tmp = taosHashGet(monitorSlowLogHash, &slowLogData->clusterId, LONG_BYTES);
@@ -693,20 +689,10 @@ static void monitorSendAllSlowLogFromTempDir(int64_t clusterId) {
 
 static void* monitorThreadFunc(void* param) {
   setThreadName("client-monitor-slowlog");
-
-#ifdef WINDOWS
-  if (taosCheckCurrentInDll()) {
-    atexit(monitorThreadFuncUnexpectedStopped);
-  }
-#endif
-
-  if (-1 != atomic_val_compare_exchange_32(&slowLogFlag, -1, 0)) {
-    return NULL;
-  }
   tscDebug("monitorThreadFunc start");
   int64_t quitTime = 0;
   while (1) {
-    if (atomic_load_32(&slowLogFlag) > 0) {
+    if (atomic_load_32(&monitorFlag) == 1) {
       if (quitCnt == 0) {
         monitorSendAllSlowLogAtQuit();
         if (quitCnt == 0) {
@@ -752,7 +738,6 @@ static void* monitorThreadFunc(void* param) {
     }
     (void)tsem2_timewait(&monitorSem, 100);
   }
-  atomic_store_32(&slowLogFlag, -2);
   return NULL;
 }
 
@@ -767,7 +752,6 @@ static int32_t tscMonitortInit() {
     return TSDB_CODE_TSC_INTERNAL_ERROR;
   }
 
-  TdThread monitorThread;
   if (taosThreadCreate(&monitorThread, &thAttr, monitorThreadFunc, NULL) != 0) {
     tscError("failed to create monitor thread since %s", strerror(errno));
     return TSDB_CODE_TSC_INTERNAL_ERROR;
@@ -778,13 +762,9 @@ static int32_t tscMonitortInit() {
 }
 
 static void tscMonitorStop() {
-  if (atomic_val_compare_exchange_32(&slowLogFlag, 0, 1)) {
-    tscDebug("monitor thread already stopped");
-    return;
-  }
-
-  while (atomic_load_32(&slowLogFlag) > 0) {
-    taosMsleep(100);
+  if (taosCheckPthreadValid(monitorThread)) {
+    (void)taosThreadJoin(monitorThread, NULL);
+    (void)taosThreadClear(&monitorThread);
   }
 }
 
@@ -842,10 +822,7 @@ int32_t monitorInit() {
 void monitorClose() {
   tscInfo("[monitor] tscMonitor close");
   taosWLockLatch(&monitorLock);
-
-  if (atomic_val_compare_exchange_32(&monitorFlag, 0, 1)) {
-    tscDebug("[monitor] monitorFlag is not 0");
-  }
+  atomic_store_32(&monitorFlag, 1);
   tscMonitorStop();
   sendAllCounter();
   taosHashCleanup(monitorCounterHash);
@@ -860,7 +837,7 @@ int32_t monitorPutData2MonitorQueue(MonitorSlowLogData data) {
   int32_t             code = 0;
   MonitorSlowLogData* slowLogData = NULL;
 
-  if (atomic_load_32(&slowLogFlag) == -2) {
+  if (atomic_load_32(&monitorFlag) == 1) {
     tscError("[monitor] slow log thread is exiting");
     return -1;
   }
diff --git a/source/client/src/clientTmq.c b/source/client/src/clientTmq.c
index 46c3cf6622..cfcb68598f 100644
--- a/source/client/src/clientTmq.c
+++ b/source/client/src/clientTmq.c
@@ -37,6 +37,7 @@ struct SMqMgmt {
 static TdThreadOnce   tmqInit = PTHREAD_ONCE_INIT;  // initialize only once
 volatile int32_t      tmqInitRes = 0;               // initialize rsp code
 static struct SMqMgmt tmqMgmt = {0};
+static   int8_t       pollFlag = 0;
 
 typedef struct {
   int32_t code;
@@ -56,7 +57,7 @@ struct tmq_list_t {
 };
 
 struct tmq_conf_t {
-  char           clientId[256];
+  char           clientId[TSDB_CLIENT_ID_LEN];
   char           groupId[TSDB_CGROUP_LEN];
   int8_t         autoCommit;
   int8_t         resetOffset;
@@ -66,6 +67,9 @@ struct tmq_conf_t {
   int8_t         sourceExcluded;  // do not consume, bit
   uint16_t       port;
   int32_t        autoCommitInterval;
+  int32_t        sessionTimeoutMs;
+  int32_t        heartBeatIntervalMs;
+  int32_t        maxPollIntervalMs;
   char*          ip;
   char*          user;
   char*          pass;
@@ -77,15 +81,18 @@ struct tmq_conf_t {
 struct tmq_t {
   int64_t        refId;
   char           groupId[TSDB_CGROUP_LEN];
-  char           clientId[256];
+  char           clientId[TSDB_CLIENT_ID_LEN];
   int8_t         withTbName;
   int8_t         useSnapshot;
   int8_t         autoCommit;
   int32_t        autoCommitInterval;
+  int32_t        sessionTimeoutMs;
+  int32_t        heartBeatIntervalMs;
+  int32_t        maxPollIntervalMs;
   int8_t         resetOffsetCfg;
   int8_t         replayEnable;
   int8_t         sourceExcluded;  // do not consume, bit
-  uint64_t       consumerId;
+  int64_t        consumerId;
   tmq_commit_cb* commitCb;
   void*          commitCbUserParam;
   int8_t         enableBatchMeta;
@@ -266,6 +273,9 @@ tmq_conf_t* tmq_conf_new() {
   conf->autoCommitInterval = DEFAULT_AUTO_COMMIT_INTERVAL;
   conf->resetOffset = TMQ_OFFSET__RESET_LATEST;
   conf->enableBatchMeta = false;
+  conf->heartBeatIntervalMs = DEFAULT_HEARTBEAT_INTERVAL;
+  conf->maxPollIntervalMs = DEFAULT_MAX_POLL_INTERVAL;
+  conf->sessionTimeoutMs = DEFAULT_SESSION_TIMEOUT;
 
   return conf;
 }
@@ -295,7 +305,7 @@ tmq_conf_res_t tmq_conf_set(tmq_conf_t* conf, const char* key, const char* value
   }
 
   if (strcasecmp(key, "client.id") == 0) {
-    tstrncpy(conf->clientId, value, 256);
+    tstrncpy(conf->clientId, value, TSDB_CLIENT_ID_LEN);
     return TMQ_CONF_OK;
   }
 
@@ -312,7 +322,38 @@ tmq_conf_res_t tmq_conf_set(tmq_conf_t* conf, const char* key, const char* value
   }
 
   if (strcasecmp(key, "auto.commit.interval.ms") == 0) {
-    conf->autoCommitInterval = taosStr2int64(value);
+    int64_t tmp = taosStr2int64(value);
+    if (tmp < 0 || EINVAL == errno || ERANGE == errno) {
+      return TMQ_CONF_INVALID;
+    }
+    conf->autoCommitInterval = (tmp > INT32_MAX ? INT32_MAX : tmp);
+    return TMQ_CONF_OK;
+  }
+
+  if (strcasecmp(key, "session.timeout.ms") == 0) {
+    int64_t tmp = taosStr2int64(value);
+    if (tmp < 6000 || tmp > 1800000){
+      return TMQ_CONF_INVALID;
+    }
+    conf->sessionTimeoutMs = tmp;
+    return TMQ_CONF_OK;
+  }
+
+  if (strcasecmp(key, "heartbeat.interval.ms") == 0) {
+    int64_t tmp = taosStr2int64(value);
+    if (tmp < 1000 || tmp >= conf->sessionTimeoutMs){
+      return TMQ_CONF_INVALID;
+    }
+    conf->heartBeatIntervalMs = tmp;
+    return TMQ_CONF_OK;
+  }
+
+  if (strcasecmp(key, "max.poll.interval.ms") == 0) {
+    int64_t tmp = taosStr2int64(value);
+    if (tmp < 1000 || tmp > INT32_MAX){
+      return TMQ_CONF_INVALID;
+    }
+    conf->maxPollIntervalMs = tmp;
     return TMQ_CONF_OK;
   }
 
@@ -371,7 +412,12 @@ tmq_conf_res_t tmq_conf_set(tmq_conf_t* conf, const char* key, const char* value
   }
 
   if (strcasecmp(key, "td.connect.port") == 0) {
-    conf->port = taosStr2int64(value);
+    int64_t tmp = taosStr2int64(value);
+    if (tmp <= 0 || tmp > 65535) {
+      return TMQ_CONF_INVALID;
+    }
+
+    conf->port = tmp;
     return TMQ_CONF_OK;
   }
 
@@ -825,6 +871,7 @@ void tmqSendHbReq(void* param, void* tmrId) {
   SMqHbReq req = {0};
   req.consumerId = tmq->consumerId;
   req.epoch = tmq->epoch;
+  req.pollFlag = atomic_load_8(&pollFlag);
   req.topics = taosArrayInit(taosArrayGetSize(tmq->clientTopics), sizeof(TopicOffsetRows));
   if (req.topics == NULL){
     return;
@@ -906,10 +953,11 @@ void tmqSendHbReq(void* param, void* tmrId) {
     tscError("tmqSendHbReq asyncSendMsgToServer failed");
   }
 
+  atomic_val_compare_exchange_8(&pollFlag, 1, 0);
 OVER:
   tDestroySMqHbReq(&req);
-  if (tmrId != NULL) {
-    (void)taosTmrReset(tmqSendHbReq, DEFAULT_HEARTBEAT_INTERVAL, param, tmqMgmt.timer, &tmq->hbLiveTimer);
+  if(tmrId != NULL){
+    (void)taosTmrReset(tmqSendHbReq, tmq->heartBeatIntervalMs, param, tmqMgmt.timer, &tmq->hbLiveTimer);
   }
   (void)taosReleaseRef(tmqMgmt.rsetId, refId);
 }
@@ -1208,6 +1256,9 @@ tmq_t* tmq_consumer_new(tmq_conf_t* conf, char* errstr, int32_t errstrLen) {
   pTmq->useSnapshot = conf->snapEnable;
   pTmq->autoCommit = conf->autoCommit;
   pTmq->autoCommitInterval = conf->autoCommitInterval;
+  pTmq->sessionTimeoutMs = conf->sessionTimeoutMs;
+  pTmq->heartBeatIntervalMs = conf->heartBeatIntervalMs;
+  pTmq->maxPollIntervalMs = conf->maxPollIntervalMs;
   pTmq->commitCb = conf->commitCb;
   pTmq->commitCbUserParam = conf->commitCbUserParam;
   pTmq->resetOffsetCfg = conf->resetOffset;
@@ -1246,7 +1297,7 @@ tmq_t* tmq_consumer_new(tmq_conf_t* conf, char* errstr, int32_t errstrLen) {
     goto _failed;
   }
 
-  pTmq->hbLiveTimer = taosTmrStart(tmqSendHbReq, DEFAULT_HEARTBEAT_INTERVAL, (void*)pTmq->refId, tmqMgmt.timer);
+  pTmq->hbLiveTimer = taosTmrStart(tmqSendHbReq, pTmq->heartBeatIntervalMs, (void*)pTmq->refId, tmqMgmt.timer);
   if (pTmq->hbLiveTimer == NULL) {
     SET_ERROR_MSG_TMQ("start heartbeat timer failed")
     goto _failed;
@@ -1279,7 +1330,7 @@ int32_t tmq_subscribe(tmq_t* tmq, const tmq_list_t* topic_list) {
   tscInfo("consumer:0x%" PRIx64 " cgroup:%s, subscribe %d topics", tmq->consumerId, tmq->groupId, sz);
 
   req.consumerId = tmq->consumerId;
-  tstrncpy(req.clientId, tmq->clientId, 256);
+  tstrncpy(req.clientId, tmq->clientId, TSDB_CLIENT_ID_LEN);
   tstrncpy(req.cgroup, tmq->groupId, TSDB_CGROUP_LEN);
 
   req.topicNames = taosArrayInit(sz, sizeof(void*));
@@ -1291,6 +1342,8 @@ int32_t tmq_subscribe(tmq_t* tmq, const tmq_list_t* topic_list) {
   req.withTbName = tmq->withTbName;
   req.autoCommit = tmq->autoCommit;
   req.autoCommitInterval = tmq->autoCommitInterval;
+  req.sessionTimeoutMs = tmq->sessionTimeoutMs;
+  req.maxPollIntervalMs = tmq->maxPollIntervalMs;
   req.resetOffsetCfg = tmq->resetOffsetCfg;
   req.enableReplay = tmq->replayEnable;
   req.enableBatchMeta = tmq->enableBatchMeta;
@@ -2343,6 +2396,8 @@ TAOS_RES* tmq_consumer_poll(tmq_t* tmq, int64_t timeout) {
     }
   }
 
+  atomic_val_compare_exchange_8(&pollFlag, 0, 1);
+
   while (1) {
     tmqHandleAllDelayedTask(tmq);
 
diff --git a/source/common/src/systable.c b/source/common/src/systable.c
index 0c0073b4a7..2d69a687a6 100644
--- a/source/common/src/systable.c
+++ b/source/common/src/systable.c
@@ -482,16 +482,16 @@ static const SSysDbTableSchema connectionsSchema[] = {
 
 
 static const SSysDbTableSchema consumerSchema[] = {
-    {.name = "consumer_id", .bytes = 32, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
-    {.name = "consumer_group", .bytes = SYSTABLE_SCH_TABLE_NAME_LEN, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
-    {.name = "client_id", .bytes = SYSTABLE_SCH_TABLE_NAME_LEN, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
+    {.name = "consumer_id", .bytes = TSDB_CONSUMER_ID_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
+    {.name = "consumer_group", .bytes = TSDB_CGROUP_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
+    {.name = "client_id", .bytes = TSDB_CLIENT_ID_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
     {.name = "status", .bytes = 20 + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
     {.name = "topics", .bytes = TSDB_TOPIC_FNAME_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
     /*{.name = "end_point", .bytes = TSDB_IPv4ADDR_LEN + 6 + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR, .sysInfo = false},*/
     {.name = "up_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP, .sysInfo = false},
     {.name = "subscribe_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP, .sysInfo = false},
     {.name = "rebalance_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP, .sysInfo = false},
-    {.name = "parameters", .bytes = 64 + TSDB_OFFSET_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
+    {.name = "parameters", .bytes = 128 + TSDB_OFFSET_LEN + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY, .sysInfo = false},
 };
 
 static const SSysDbTableSchema offsetSchema[] = {
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 32915ba884..9777030953 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -7083,6 +7083,7 @@ int32_t tSerializeSMqHbReq(void *buf, int32_t bufLen, SMqHbReq *pReq) {
     }
   }
 
+  if (tEncodeI8(&encoder, pReq->pollFlag) < 0) return -1;
   tEndEncode(&encoder);
 
   int32_t tlen = encoder.pos;
@@ -7122,6 +7123,9 @@ int32_t tDeserializeSMqHbReq(void *buf, int32_t bufLen, SMqHbReq *pReq) {
       }
     }
   }
+  if (!tDecodeIsEnd(&decoder)) {
+    if (tDecodeI8(&decoder, &pReq->pollFlag) < 0) return -1;
+  }
   tEndDecode(&decoder);
 
   tDecoderClear(&decoder);
diff --git a/source/dnode/mnode/impl/inc/mndConsumer.h b/source/dnode/mnode/impl/inc/mndConsumer.h
index e1a790867e..a773c61986 100644
--- a/source/dnode/mnode/impl/inc/mndConsumer.h
+++ b/source/dnode/mnode/impl/inc/mndConsumer.h
@@ -25,7 +25,7 @@ extern "C" {
 enum {
   MQ_CONSUMER_STATUS_REBALANCE = 1,
   MQ_CONSUMER_STATUS_READY,
-  MQ_CONSUMER_STATUS_LOST,
+//  MQ_CONSUMER_STATUS_LOST,
 };
 
 int32_t mndInitConsumer(SMnode *pMnode);
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index 5319cc88eb..62e77867f6 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -596,11 +596,12 @@ typedef struct {
 typedef struct {
   int64_t  consumerId;
   char     cgroup[TSDB_CGROUP_LEN];
-  char     clientId[256];
+  char     clientId[TSDB_CLIENT_ID_LEN];
   int8_t   updateType;  // used only for update
   int32_t  epoch;
   int32_t  status;
   int32_t  hbStatus;          // hbStatus is not applicable to serialization
+  int32_t  pollStatus;        // pollStatus is not applicable to serialization
   SRWLatch lock;              // lock is used for topics update
   SArray*  currentTopics;     // SArray<char*>
   SArray*  rebNewTopics;      // SArray<char*>
@@ -620,6 +621,8 @@ typedef struct {
   int8_t  autoCommit;
   int32_t autoCommitInterval;
   int32_t resetOffsetCfg;
+  int32_t sessionTimeoutMs;
+  int32_t maxPollIntervalMs;
 } SMqConsumerObj;
 
 int32_t         tNewSMqConsumerObj(int64_t consumerId, char *cgroup, int8_t updateType,
diff --git a/source/dnode/mnode/impl/src/mndConsumer.c b/source/dnode/mnode/impl/src/mndConsumer.c
index fbbe9a742a..1a9f808688 100644
--- a/source/dnode/mnode/impl/src/mndConsumer.c
+++ b/source/dnode/mnode/impl/src/mndConsumer.c
@@ -25,7 +25,7 @@
 #include "tcompare.h"
 #include "tname.h"
 
-#define MND_CONSUMER_VER_NUMBER   2
+#define MND_CONSUMER_VER_NUMBER   3
 #define MND_CONSUMER_RESERVE_SIZE 64
 
 #define MND_MAX_GROUP_PER_TOPIC 100
@@ -55,7 +55,6 @@ int32_t mndInitConsumer(SMnode *pMnode) {
   mndSetMsgHandle(pMnode, TDMT_MND_TMQ_SUBSCRIBE, mndProcessSubscribeReq);
   mndSetMsgHandle(pMnode, TDMT_MND_TMQ_HB, mndProcessMqHbReq);
   mndSetMsgHandle(pMnode, TDMT_MND_TMQ_ASK_EP, mndProcessAskEpReq);
-  //  mndSetMsgHandle(pMnode, TDMT_MND_TMQ_TIMER, mndProcessMqTimerMsg);
   mndSetMsgHandle(pMnode, TDMT_MND_TMQ_LOST_CONSUMER_CLEAR, mndProcessConsumerClearMsg);
 
   mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_CONSUMERS, mndRetrieveConsumer);
@@ -238,11 +237,10 @@ static int32_t mndProcessMqHbReq(SRpcMsg *pMsg) {
   MND_TMQ_RETURN_CHECK(mndAcquireConsumer(pMnode, consumerId, &pConsumer));
   MND_TMQ_RETURN_CHECK(checkPrivilege(pMnode, pConsumer, &rsp, pMsg->info.conn.user));
   atomic_store_32(&pConsumer->hbStatus, 0);
-  int32_t status = atomic_load_32(&pConsumer->status);
-  if (status == MQ_CONSUMER_STATUS_LOST) {
-    mInfo("try to recover consumer:0x%" PRIx64, consumerId);
-    MND_TMQ_RETURN_CHECK(mndSendConsumerMsg(pMnode, pConsumer->consumerId, TDMT_MND_TMQ_CONSUMER_RECOVER, &pMsg->info));
+  if (req.pollFlag == 1){
+    atomic_store_32(&pConsumer->pollStatus, 0);
   }
+
   storeOffsetRows(pMnode, &req, pConsumer);
   code = buildMqHbRsp(pMsg, &rsp);
 
@@ -389,11 +387,9 @@ static int32_t mndProcessAskEpReq(SRpcMsg *pMsg) {
     code = TSDB_CODE_MND_CONSUMER_NOT_EXIST;
     goto END;
   }
-  atomic_store_32(&pConsumer->hbStatus, 0);
+
+  // 1. check consumer status
   int32_t status = atomic_load_32(&pConsumer->status);
-  if (status == MQ_CONSUMER_STATUS_LOST) {
-    MND_TMQ_RETURN_CHECK(mndSendConsumerMsg(pMnode, pConsumer->consumerId, TDMT_MND_TMQ_CONSUMER_RECOVER, &pMsg->info));
-  }
   if (status != MQ_CONSUMER_STATUS_READY) {
     mInfo("consumer:0x%" PRIx64 " not ready, status: %s", consumerId, mndConsumerStatusName(status));
     code = TSDB_CODE_MND_CONSUMER_NOT_READY;
@@ -566,7 +562,7 @@ int32_t mndProcessSubscribeReq(SRpcMsg *pMsg) {
   STrans         *pTrans = NULL;
 
   SCMSubscribeReq subscribe = {0};
-  MND_TMQ_RETURN_CHECK(tDeserializeSCMSubscribeReq(msgStr, &subscribe));
+  MND_TMQ_RETURN_CHECK(tDeserializeSCMSubscribeReq(msgStr, &subscribe, pMsg->contLen));
   if(taosArrayGetSize(subscribe.topicNames) == 0){
     SMqConsumerObj *pConsumerTmp = NULL;
     MND_TMQ_RETURN_CHECK(mndAcquireConsumer(pMnode, subscribe.consumerId, &pConsumerTmp));
@@ -701,17 +697,17 @@ static int32_t mndConsumerActionDelete(SSdb *pSdb, SMqConsumerObj *pConsumer) {
   return 0;
 }
 
-static void updateConsumerStatus(SMqConsumerObj *pConsumer) {
-  int32_t status = pConsumer->status;
-
-  if (taosArrayGetSize(pConsumer->rebNewTopics) == 0 && taosArrayGetSize(pConsumer->rebRemovedTopics) == 0) {
-    if (status == MQ_CONSUMER_STATUS_REBALANCE) {
-      pConsumer->status = MQ_CONSUMER_STATUS_READY;
-    } else if (status == MQ_CONSUMER_STATUS_READY && taosArrayGetSize(pConsumer->currentTopics) == 0) {
-      pConsumer->status = MQ_CONSUMER_STATUS_LOST;
-    }
-  }
-}
+//static void updateConsumerStatus(SMqConsumerObj *pConsumer) {
+//  int32_t status = pConsumer->status;
+//
+//  if (taosArrayGetSize(pConsumer->rebNewTopics) == 0 && taosArrayGetSize(pConsumer->rebRemovedTopics) == 0) {
+//    if (status == MQ_CONSUMER_STATUS_REBALANCE) {
+//      pConsumer->status = MQ_CONSUMER_STATUS_READY;
+//    } else if (status == MQ_CONSUMER_STATUS_READY && taosArrayGetSize(pConsumer->currentTopics) == 0) {
+//      pConsumer->status = MQ_CONSUMER_STATUS_LOST;
+//    }
+//  }
+//}
 
 // remove from topic list
 static void removeFromTopicList(SArray *topicList, const char *pTopic, int64_t consumerId, char *type) {
@@ -757,21 +753,6 @@ static int32_t mndConsumerActionUpdate(SSdb *pSdb, SMqConsumerObj *pOldConsumer,
     pOldConsumer->subscribeTime = taosGetTimestampMs();
     pOldConsumer->status = MQ_CONSUMER_STATUS_REBALANCE;
     mInfo("consumer:0x%" PRIx64 " subscribe update, modify existed consumer", pOldConsumer->consumerId);
-  } else if (pNewConsumer->updateType == CONSUMER_UPDATE_REC) {
-    int32_t sz = taosArrayGetSize(pOldConsumer->assignedTopics);
-    for (int32_t i = 0; i < sz; i++) {
-      void * tmp = taosArrayGetP(pOldConsumer->assignedTopics, i);
-      if (tmp == NULL){
-        return TSDB_CODE_TMQ_INVALID_MSG;
-      }
-      char *topic = taosStrdup(tmp);
-      if (taosArrayPush(pOldConsumer->rebNewTopics, &topic) == NULL) {
-        taosMemoryFree(topic);
-        return TSDB_CODE_TMQ_INVALID_MSG;
-      }
-    }
-    pOldConsumer->status = MQ_CONSUMER_STATUS_REBALANCE;
-    mInfo("consumer:0x%" PRIx64 " recover update", pOldConsumer->consumerId);
   } else if (pNewConsumer->updateType == CONSUMER_UPDATE_REB) {
     (void)atomic_add_fetch_32(&pOldConsumer->epoch, 1);
     pOldConsumer->rebalanceTime = taosGetTimestampMs();
@@ -796,7 +777,11 @@ static int32_t mndConsumerActionUpdate(SSdb *pSdb, SMqConsumerObj *pOldConsumer,
     }
 
     int32_t status = pOldConsumer->status;
-    updateConsumerStatus(pOldConsumer);
+//    updateConsumerStatus(pOldConsumer);
+    if (taosArrayGetSize(pOldConsumer->rebNewTopics) == 0 && taosArrayGetSize(pOldConsumer->rebRemovedTopics) == 0) {
+      pOldConsumer->status = MQ_CONSUMER_STATUS_READY;
+    }
+
     pOldConsumer->rebalanceTime = taosGetTimestampMs();
     (void)atomic_add_fetch_32(&pOldConsumer->epoch, 1);
 
@@ -816,7 +801,10 @@ static int32_t mndConsumerActionUpdate(SSdb *pSdb, SMqConsumerObj *pOldConsumer,
     removeFromTopicList(pOldConsumer->currentTopics, topic, pOldConsumer->consumerId, "current");
 
     int32_t status = pOldConsumer->status;
-    updateConsumerStatus(pOldConsumer);
+//    updateConsumerStatus(pOldConsumer);
+    if (taosArrayGetSize(pOldConsumer->rebNewTopics) == 0 && taosArrayGetSize(pOldConsumer->rebRemovedTopics) == 0) {
+      pOldConsumer->status = MQ_CONSUMER_STATUS_READY;
+    }
     pOldConsumer->rebalanceTime = taosGetTimestampMs();
     (void)atomic_add_fetch_32(&pOldConsumer->epoch, 1);
 
@@ -852,6 +840,8 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
   int32_t         numOfRows = 0;
   SMqConsumerObj *pConsumer = NULL;
   int32_t         code = 0;
+  char           *parasStr = NULL;
+  char           *status = NULL;
 
   while (numOfRows < rowsCapacity) {
     pShow->pIter = sdbFetch(pSdb, SDB_CONSUMER, pShow->pIter, (void **)&pConsumer);
@@ -884,7 +874,7 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
       int32_t          cols = 0;
 
       // consumer id
-      char consumerIdHex[32] = {0};
+      char consumerIdHex[TSDB_CONSUMER_ID_LEN + VARSTR_HEADER_SIZE] = {0};
       (void)sprintf(varDataVal(consumerIdHex), "0x%" PRIx64, pConsumer->consumerId);
       varDataSetLen(consumerIdHex, strlen(varDataVal(consumerIdHex)));
 
@@ -901,7 +891,7 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
       MND_TMQ_RETURN_CHECK(colDataSetVal(pColInfo, numOfRows, (const char *)cgroup, false));
 
       // client id
-      char clientId[256 + VARSTR_HEADER_SIZE] = {0};
+      char clientId[TSDB_CLIENT_ID_LEN + VARSTR_HEADER_SIZE] = {0};
       STR_TO_VARSTR(clientId, pConsumer->clientId);
 
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
@@ -909,13 +899,15 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
       MND_TMQ_RETURN_CHECK(colDataSetVal(pColInfo, numOfRows, (const char *)clientId, false));
 
       // status
-      char        status[20 + VARSTR_HEADER_SIZE] = {0};
       const char *pStatusName = mndConsumerStatusName(pConsumer->status);
+      status = taosMemoryCalloc(1, pShow->pMeta->pSchemas[cols].bytes);
+      MND_TMQ_NULL_CHECK(status);
       STR_TO_VARSTR(status, pStatusName);
 
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
       MND_TMQ_NULL_CHECK(pColInfo);
       MND_TMQ_RETURN_CHECK(colDataSetVal(pColInfo, numOfRows, (const char *)status, false));
+      taosMemoryFreeClear(status);
 
       // one subscribed topic
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
@@ -948,7 +940,8 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
       STqOffsetVal pVal = {.type = pConsumer->resetOffsetCfg};
       tFormatOffset(buf, TSDB_OFFSET_LEN, &pVal);
 
-      char parasStr[64 + TSDB_OFFSET_LEN + VARSTR_HEADER_SIZE] = {0};
+      parasStr = taosMemoryCalloc(1, pShow->pMeta->pSchemas[cols].bytes);
+      MND_TMQ_NULL_CHECK(parasStr);
       (void)sprintf(varDataVal(parasStr), "tbname:%d,commit:%d,interval:%dms,reset:%s", pConsumer->withTbName,
               pConsumer->autoCommit, pConsumer->autoCommitInterval, buf);
       varDataSetLen(parasStr, strlen(varDataVal(parasStr)));
@@ -956,7 +949,7 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
       pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
       MND_TMQ_NULL_CHECK(pColInfo);
       MND_TMQ_RETURN_CHECK(colDataSetVal(pColInfo, numOfRows, (const char *)parasStr, false));
-
+      taosMemoryFreeClear(parasStr);
       numOfRows++;
     }
 
@@ -970,6 +963,8 @@ static int32_t mndRetrieveConsumer(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *
   return numOfRows;
 
 END:
+  taosMemoryFreeClear(status);
+  taosMemoryFreeClear(parasStr);
   return code;
 }
 
@@ -982,8 +977,8 @@ const char *mndConsumerStatusName(int status) {
   switch (status) {
     case MQ_CONSUMER_STATUS_READY:
       return "ready";
-    case MQ_CONSUMER_STATUS_LOST:
-      return "lost";
+//    case MQ_CONSUMER_STATUS_LOST:
+//      return "lost";
     case MQ_CONSUMER_STATUS_REBALANCE:
       return "rebalancing";
     default:
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index a307e3557b..5a7831ac0e 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -791,12 +791,12 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
   mndSetDefaultDbCfg(&dbObj.cfg);
 
   if ((code = mndCheckDbName(dbObj.name, pUser)) != 0) {
-    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
+    mError("db:%s, failed to create, check db name failed, since %s", pCreate->db, terrstr());
     TAOS_RETURN(code);
   }
 
   if ((code = mndCheckDbCfg(pMnode, &dbObj.cfg)) != 0) {
-    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
+    mError("db:%s, failed to create, check db cfg failed, since %s", pCreate->db, terrstr());
     TAOS_RETURN(code);
   }
 
@@ -812,7 +812,7 @@ static int32_t mndCreateDb(SMnode *pMnode, SRpcMsg *pReq, SCreateDbReq *pCreate,
 
   SVgObj *pVgroups = NULL;
   if ((code = mndAllocVgroup(pMnode, &dbObj, &pVgroups)) != 0) {
-    mError("db:%s, failed to create since %s", pCreate->db, terrstr());
+    mError("db:%s, failed to create, alloc vgroup failed, since %s", pCreate->db, terrstr());
     TAOS_RETURN(code);
   }
 
@@ -965,7 +965,7 @@ static int32_t mndProcessCreateDbReq(SRpcMsg *pReq) {
 
   TAOS_CHECK_GOTO(mndAcquireUser(pMnode, pReq->info.conn.user, &pUser), &lino, _OVER);
 
-  code = mndCreateDb(pMnode, pReq, &createReq, pUser);
+  TAOS_CHECK_GOTO(mndCreateDb(pMnode, pReq, &createReq, pUser), &lino, _OVER);
   if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
 
   SName name = {0};
diff --git a/source/dnode/mnode/impl/src/mndDef.c b/source/dnode/mnode/impl/src/mndDef.c
index 6fdd77af98..695bf4d30d 100644
--- a/source/dnode/mnode/impl/src/mndDef.c
+++ b/source/dnode/mnode/impl/src/mndDef.c
@@ -288,6 +288,7 @@ int32_t tNewSMqConsumerObj(int64_t consumerId, char *cgroup, int8_t updateType,
   pConsumer->epoch = 0;
   pConsumer->status = MQ_CONSUMER_STATUS_REBALANCE;
   pConsumer->hbStatus = 0;
+  pConsumer->pollStatus = 0;
 
   taosInitRWLatch(&pConsumer->lock);
   pConsumer->createTime = taosGetTimestampMs();
@@ -322,6 +323,8 @@ int32_t tNewSMqConsumerObj(int64_t consumerId, char *cgroup, int8_t updateType,
     pConsumer->autoCommit = subscribe->autoCommit;
     pConsumer->autoCommitInterval = subscribe->autoCommitInterval;
     pConsumer->resetOffsetCfg = subscribe->resetOffsetCfg;
+    pConsumer->maxPollIntervalMs = subscribe->maxPollIntervalMs;
+    pConsumer->sessionTimeoutMs = subscribe->sessionTimeoutMs;
 
     pConsumer->rebNewTopics = taosArrayDup(subscribe->topicNames, topicNameDup);
     if (pConsumer->rebNewTopics == NULL){
@@ -424,6 +427,8 @@ int32_t tEncodeSMqConsumerObj(void **buf, const SMqConsumerObj *pConsumer) {
   tlen += taosEncodeFixedI8(buf, pConsumer->autoCommit);
   tlen += taosEncodeFixedI32(buf, pConsumer->autoCommitInterval);
   tlen += taosEncodeFixedI32(buf, pConsumer->resetOffsetCfg);
+  tlen += taosEncodeFixedI32(buf, pConsumer->maxPollIntervalMs);
+  tlen += taosEncodeFixedI32(buf, pConsumer->sessionTimeoutMs);
   return tlen;
 }
 
@@ -495,6 +500,14 @@ void *tDecodeSMqConsumerObj(const void *buf, SMqConsumerObj *pConsumer, int8_t s
     buf = taosDecodeFixedI32(buf, &pConsumer->autoCommitInterval);
     buf = taosDecodeFixedI32(buf, &pConsumer->resetOffsetCfg);
   }
+  if (sver > 2){
+    buf = taosDecodeFixedI32(buf, &pConsumer->maxPollIntervalMs);
+    buf = taosDecodeFixedI32(buf, &pConsumer->sessionTimeoutMs);
+  } else{
+    pConsumer->maxPollIntervalMs = DEFAULT_MAX_POLL_INTERVAL;
+    pConsumer->sessionTimeoutMs = DEFAULT_SESSION_TIMEOUT;
+  }
+
   return (void *)buf;
 }
 
diff --git a/source/dnode/mnode/impl/src/mndMain.c b/source/dnode/mnode/impl/src/mndMain.c
index 7e072b8fe5..37a171e9a4 100644
--- a/source/dnode/mnode/impl/src/mndMain.c
+++ b/source/dnode/mnode/impl/src/mndMain.c
@@ -669,6 +669,13 @@ SMnode *mndOpen(const char *path, const SMnodeOpt *pOption) {
   }
   (void)memset(pMnode, 0, sizeof(SMnode));
 
+  int32_t code = taosThreadRwlockInit(&pMnode->lock, NULL);
+  if (code != 0) {
+    taosMemoryFree(pMnode);
+    mError("failed to open mnode lock since %s", tstrerror(code));
+    return NULL;
+  }
+
   char timestr[24] = "1970-01-01 00:00:00.00";
   (void)taosParseTime(timestr, &pMnode->checkTime, (int32_t)strlen(timestr), TSDB_TIME_PRECISION_MILLI, 0);
   mndSetOptions(pMnode, pOption);
@@ -682,7 +689,7 @@ SMnode *mndOpen(const char *path, const SMnodeOpt *pOption) {
     return NULL;
   }
 
-  int32_t code = mndCreateDir(pMnode, path);
+  code = mndCreateDir(pMnode, path);
   if (code != 0) {
     code = terrno;
     mError("failed to open mnode since %s", tstrerror(code));
diff --git a/source/dnode/mnode/impl/src/mndSubscribe.c b/source/dnode/mnode/impl/src/mndSubscribe.c
index d45346516b..585bf5527d 100644
--- a/source/dnode/mnode/impl/src/mndSubscribe.c
+++ b/source/dnode/mnode/impl/src/mndSubscribe.c
@@ -27,8 +27,7 @@
 #define MND_SUBSCRIBE_VER_NUMBER   3
 #define MND_SUBSCRIBE_RESERVE_SIZE 64
 
-#define MND_CONSUMER_LOST_HB_CNT          6
-#define MND_CONSUMER_LOST_CLEAR_THRESHOLD 43200
+//#define MND_CONSUMER_LOST_HB_CNT          6
 
 static int32_t mqRebInExecCnt = 0;
 
@@ -331,6 +330,7 @@ static int32_t processRemoveAddVgs(SMnode *pMnode, SMqRebOutputObj *pOutput) {
   int32_t code = 0;
   int32_t totalVgNum = 0;
   SVgObj *pVgroup = NULL;
+  SMqVgEp *pVgEp = NULL;
   void   *pIter = NULL;
   SArray *newVgs = taosArrayInit(0, POINTER_BYTES);
   MND_TMQ_NULL_CHECK(newVgs);
@@ -346,11 +346,12 @@ static int32_t processRemoveAddVgs(SMnode *pMnode, SMqRebOutputObj *pOutput) {
     }
 
     totalVgNum++;
-    SMqVgEp *pVgEp = taosMemoryMalloc(sizeof(SMqVgEp));
+    pVgEp = taosMemoryMalloc(sizeof(SMqVgEp));
     MND_TMQ_NULL_CHECK(pVgEp);
     pVgEp->epSet = mndGetVgroupEpset(pMnode, pVgroup);
     pVgEp->vgId = pVgroup->vgId;
     MND_TMQ_NULL_CHECK(taosArrayPush(newVgs, &pVgEp));
+    pVgEp = NULL;
     sdbRelease(pMnode->pSdb, pVgroup);
   }
 
@@ -361,13 +362,13 @@ static int32_t processRemoveAddVgs(SMnode *pMnode, SMqRebOutputObj *pOutput) {
     SMqConsumerEp *pConsumerEp = (SMqConsumerEp *)pIter;
     int32_t j = 0;
     while (j < taosArrayGetSize(pConsumerEp->vgs)) {
-      SMqVgEp *pVgEp = taosArrayGetP(pConsumerEp->vgs, j);
-      MND_TMQ_NULL_CHECK(pVgEp);
+      SMqVgEp *pVgEpTmp = taosArrayGetP(pConsumerEp->vgs, j);
+      MND_TMQ_NULL_CHECK(pVgEpTmp);
       bool     find = false;
       for (int32_t k = 0; k < taosArrayGetSize(newVgs); k++) {
         SMqVgEp *pnewVgEp = taosArrayGetP(newVgs, k);
         MND_TMQ_NULL_CHECK(pnewVgEp);
-        if (pVgEp->vgId == pnewVgEp->vgId) {
+        if (pVgEpTmp->vgId == pnewVgEp->vgId) {
           tDeleteSMqVgEp(pnewVgEp);
           taosArrayRemove(newVgs, k);
           find = true;
@@ -375,8 +376,8 @@ static int32_t processRemoveAddVgs(SMnode *pMnode, SMqRebOutputObj *pOutput) {
         }
       }
       if (!find) {
-        mInfo("[rebalance] processRemoveAddVgs old vgId:%d", pVgEp->vgId);
-        tDeleteSMqVgEp(pVgEp);
+        mInfo("[rebalance] processRemoveAddVgs old vgId:%d", pVgEpTmp->vgId);
+        tDeleteSMqVgEp(pVgEpTmp);
         taosArrayRemove(pConsumerEp->vgs, j);
         continue;
       }
@@ -387,12 +388,16 @@ static int32_t processRemoveAddVgs(SMnode *pMnode, SMqRebOutputObj *pOutput) {
   if (taosArrayGetSize(pOutput->pSub->unassignedVgs) == 0 && taosArrayGetSize(newVgs) != 0) {
     MND_TMQ_NULL_CHECK(taosArrayAddAll(pOutput->pSub->unassignedVgs, newVgs));
     mInfo("[rebalance] processRemoveAddVgs add new vg num:%d", (int)taosArrayGetSize(newVgs));
-    (void)taosArrayDestroy(newVgs);
+    taosArrayDestroy(newVgs);
   } else {
-    (void)taosArrayDestroyP(newVgs, (FDelete)tDeleteSMqVgEp);
+    taosArrayDestroyP(newVgs, (FDelete)tDeleteSMqVgEp);
   }
   return totalVgNum;
+
 END:
+  sdbRelease(pMnode->pSdb, pVgroup);
+  taosMemoryFree(pVgEp);
+  taosArrayDestroyP(newVgs, (FDelete)tDeleteSMqVgEp);
   return code;
 }
 
@@ -758,32 +763,32 @@ static int32_t mndCheckConsumer(SRpcMsg *pMsg, SHashObj *rebSubHash) {
     }
 
     int32_t hbStatus = atomic_add_fetch_32(&pConsumer->hbStatus, 1);
+    int32_t pollStatus = atomic_add_fetch_32(&pConsumer->pollStatus, 1);
     int32_t status = atomic_load_32(&pConsumer->status);
 
     mDebug("[rebalance] check for consumer:0x%" PRIx64 " status:%d(%s), sub-time:%" PRId64 ", createTime:%" PRId64
-           ", hbstatus:%d",
+           ", hbstatus:%d, pollStatus:%d",
            pConsumer->consumerId, status, mndConsumerStatusName(status), pConsumer->subscribeTime,
-           pConsumer->createTime, hbStatus);
+           pConsumer->createTime, hbStatus, pollStatus);
 
     if (status == MQ_CONSUMER_STATUS_READY) {
-      if (taosArrayGetSize(pConsumer->assignedTopics) == 0) {  // unsubscribe or close
+      if (taosArrayGetSize(pConsumer->currentTopics) == 0) {  // unsubscribe or close
         MND_TMQ_RETURN_CHECK(mndSendConsumerMsg(pMnode, pConsumer->consumerId, TDMT_MND_TMQ_LOST_CONSUMER_CLEAR, &pMsg->info));
-      } else if (hbStatus > MND_CONSUMER_LOST_HB_CNT) {
+      } else if (hbStatus * tsMqRebalanceInterval * 1000 >= pConsumer->sessionTimeoutMs ||
+                 pollStatus * tsMqRebalanceInterval * 1000 >= pConsumer->maxPollIntervalMs) {
         taosRLockLatch(&pConsumer->lock);
         MND_TMQ_RETURN_CHECK(buildRebInfo(rebSubHash, pConsumer->currentTopics, 0, pConsumer->cgroup, pConsumer->consumerId));
         taosRUnLockLatch(&pConsumer->lock);
       } else {
         checkForVgroupSplit(pMnode, pConsumer, rebSubHash);
       }
-    } else if (status == MQ_CONSUMER_STATUS_LOST) {
-      if (hbStatus > MND_CONSUMER_LOST_CLEAR_THRESHOLD) {  // clear consumer if lost a day
-        MND_TMQ_RETURN_CHECK(mndSendConsumerMsg(pMnode, pConsumer->consumerId, TDMT_MND_TMQ_LOST_CONSUMER_CLEAR, &pMsg->info));
-      }
-    } else {
+    } else if (status == MQ_CONSUMER_STATUS_REBALANCE) {
       taosRLockLatch(&pConsumer->lock);
       MND_TMQ_RETURN_CHECK(buildRebInfo(rebSubHash, pConsumer->rebNewTopics, 1, pConsumer->cgroup, pConsumer->consumerId));
       MND_TMQ_RETURN_CHECK(buildRebInfo(rebSubHash, pConsumer->rebRemovedTopics, 0, pConsumer->cgroup, pConsumer->consumerId));
       taosRUnLockLatch(&pConsumer->lock);
+    } else {
+      MND_TMQ_RETURN_CHECK(mndSendConsumerMsg(pMnode, pConsumer->consumerId, TDMT_MND_TMQ_LOST_CONSUMER_CLEAR, &pMsg->info));
     }
 
     mndReleaseConsumer(pMnode, pConsumer);
@@ -1013,37 +1018,37 @@ END:
   return code;
 }
 
-static int32_t mndDropConsumerByGroup(SMnode *pMnode, STrans *pTrans, char *cgroup, char *topic) {
-  void           *pIter = NULL;
-  SMqConsumerObj *pConsumer = NULL;
-  int             code = 0;
-  while (1) {
-    pIter = sdbFetch(pMnode->pSdb, SDB_CONSUMER, pIter, (void **)&pConsumer);
-    if (pIter == NULL) {
-      break;
-    }
-
-    // drop consumer in lost status, other consumers not in lost status already deleted by rebalance
-    if (pConsumer->status != MQ_CONSUMER_STATUS_LOST || strcmp(cgroup, pConsumer->cgroup) != 0) {
-      sdbRelease(pMnode->pSdb, pConsumer);
-      continue;
-    }
-    int32_t sz = taosArrayGetSize(pConsumer->assignedTopics);
-    for (int32_t i = 0; i < sz; i++) {
-      char *name = taosArrayGetP(pConsumer->assignedTopics, i);
-      if (name && strcmp(topic, name) == 0) {
-        MND_TMQ_RETURN_CHECK(mndSetConsumerDropLogs(pTrans, pConsumer));
-      }
-    }
-
-    sdbRelease(pMnode->pSdb, pConsumer);
-  }
-
-END:
-  sdbRelease(pMnode->pSdb, pConsumer);
-  sdbCancelFetch(pMnode->pSdb, pIter);
-  return code;
-}
+//static int32_t mndDropConsumerByGroup(SMnode *pMnode, STrans *pTrans, char *cgroup, char *topic) {
+//  void           *pIter = NULL;
+//  SMqConsumerObj *pConsumer = NULL;
+//  int             code = 0;
+//  while (1) {
+//    pIter = sdbFetch(pMnode->pSdb, SDB_CONSUMER, pIter, (void **)&pConsumer);
+//    if (pIter == NULL) {
+//      break;
+//    }
+//
+//    // drop consumer in lost status, other consumers not in lost status already deleted by rebalance
+//    if (pConsumer->status != MQ_CONSUMER_STATUS_LOST || strcmp(cgroup, pConsumer->cgroup) != 0) {
+//      sdbRelease(pMnode->pSdb, pConsumer);
+//      continue;
+//    }
+//    int32_t sz = taosArrayGetSize(pConsumer->assignedTopics);
+//    for (int32_t i = 0; i < sz; i++) {
+//      char *name = taosArrayGetP(pConsumer->assignedTopics, i);
+//      if (name && strcmp(topic, name) == 0) {
+//        MND_TMQ_RETURN_CHECK(mndSetConsumerDropLogs(pTrans, pConsumer));
+//      }
+//    }
+//
+//    sdbRelease(pMnode->pSdb, pConsumer);
+//  }
+//
+//END:
+//  sdbRelease(pMnode->pSdb, pConsumer);
+//  sdbCancelFetch(pMnode->pSdb, pIter);
+//  return code;
+//}
 
 static int32_t mndProcessDropCgroupReq(SRpcMsg *pMsg) {
   SMnode         *pMnode = pMsg->info.node;
@@ -1079,7 +1084,6 @@ static int32_t mndProcessDropCgroupReq(SRpcMsg *pMsg) {
   mInfo("trans:%d, used to drop cgroup:%s on topic %s", pTrans->id, dropReq.cgroup, dropReq.topic);
   mndTransSetDbName(pTrans, pSub->dbName, dropReq.cgroup);
   MND_TMQ_RETURN_CHECK(mndTransCheckConflict(pMnode, pTrans));
-  MND_TMQ_RETURN_CHECK(mndDropConsumerByGroup(pMnode, pTrans, dropReq.cgroup, dropReq.topic));
   MND_TMQ_RETURN_CHECK(sendDeleteSubToVnode(pMnode, pSub, pTrans));
   MND_TMQ_RETURN_CHECK(mndSetDropSubCommitLogs(pMnode, pTrans, pSub));
   MND_TMQ_RETURN_CHECK(mndTransPrepare(pMnode, pTrans));
diff --git a/source/dnode/mnode/impl/src/mndTopic.c b/source/dnode/mnode/impl/src/mndTopic.c
index 930c4d66d5..46d5afc145 100644
--- a/source/dnode/mnode/impl/src/mndTopic.c
+++ b/source/dnode/mnode/impl/src/mndTopic.c
@@ -613,44 +613,44 @@ static bool checkTopic(SArray *topics, char *topicName){
   return false;
 }
 
-static int32_t mndDropConsumerByTopic(SMnode *pMnode, STrans *pTrans, char *topicName){
-  int32_t         code = 0;
-  SSdb           *pSdb    = pMnode->pSdb;
-  void           *pIter = NULL;
-  SMqConsumerObj *pConsumer = NULL;
-  while (1) {
-    pIter = sdbFetch(pSdb, SDB_CONSUMER, pIter, (void **)&pConsumer);
-    if (pIter == NULL) {
-      break;
-    }
-
-    bool found = checkTopic(pConsumer->assignedTopics, topicName);
-    if (found){
-      if (pConsumer->status == MQ_CONSUMER_STATUS_LOST) {
-        MND_TMQ_RETURN_CHECK(mndSetConsumerDropLogs(pTrans, pConsumer));
-        sdbRelease(pSdb, pConsumer);
-        continue;
-      }
-      mError("topic:%s, failed to drop since subscribed by consumer:0x%" PRIx64 ", in consumer group %s",
-             topicName, pConsumer->consumerId, pConsumer->cgroup);
-      code = TSDB_CODE_MND_TOPIC_SUBSCRIBED;
-      goto END;
-    }
-
-    if (checkTopic(pConsumer->rebNewTopics, topicName) || checkTopic(pConsumer->rebRemovedTopics, topicName))  {
-      code = TSDB_CODE_MND_TOPIC_SUBSCRIBED;
-      mError("topic:%s, failed to drop since subscribed by consumer:%" PRId64 ", in consumer group %s (reb new)",
-             topicName, pConsumer->consumerId, pConsumer->cgroup);
-      goto END;
-    }
-    sdbRelease(pSdb, pConsumer);
-  }
-
-END:
-  sdbRelease(pSdb, pConsumer);
-  sdbCancelFetch(pSdb, pIter);
-  return code;
-}
+//static int32_t mndDropConsumerByTopic(SMnode *pMnode, STrans *pTrans, char *topicName){
+//  int32_t         code = 0;
+//  SSdb           *pSdb    = pMnode->pSdb;
+//  void           *pIter = NULL;
+//  SMqConsumerObj *pConsumer = NULL;
+//  while (1) {
+//    pIter = sdbFetch(pSdb, SDB_CONSUMER, pIter, (void **)&pConsumer);
+//    if (pIter == NULL) {
+//      break;
+//    }
+//
+//    bool found = checkTopic(pConsumer->assignedTopics, topicName);
+//    if (found){
+//      if (pConsumer->status == MQ_CONSUMER_STATUS_LOST) {
+//        MND_TMQ_RETURN_CHECK(mndSetConsumerDropLogs(pTrans, pConsumer));
+//        sdbRelease(pSdb, pConsumer);
+//        continue;
+//      }
+//      mError("topic:%s, failed to drop since subscribed by consumer:0x%" PRIx64 ", in consumer group %s",
+//             topicName, pConsumer->consumerId, pConsumer->cgroup);
+//      code = TSDB_CODE_MND_TOPIC_SUBSCRIBED;
+//      goto END;
+//    }
+//
+//    if (checkTopic(pConsumer->rebNewTopics, topicName) || checkTopic(pConsumer->rebRemovedTopics, topicName))  {
+//      code = TSDB_CODE_MND_TOPIC_SUBSCRIBED;
+//      mError("topic:%s, failed to drop since subscribed by consumer:%" PRId64 ", in consumer group %s (reb new)",
+//             topicName, pConsumer->consumerId, pConsumer->cgroup);
+//      goto END;
+//    }
+//    sdbRelease(pSdb, pConsumer);
+//  }
+//
+//END:
+//  sdbRelease(pSdb, pConsumer);
+//  sdbCancelFetch(pSdb, pIter);
+//  return code;
+//}
 
 static int32_t mndDropCheckInfoByTopic(SMnode *pMnode, STrans *pTrans, SMqTopicObj *pTopic){
   // broadcast to all vnode
@@ -722,9 +722,10 @@ static int32_t mndProcessDropTopicReq(SRpcMsg *pReq) {
   mndTransSetDbName(pTrans, pTopic->db, NULL);
   MND_TMQ_RETURN_CHECK(mndTransCheckConflict(pMnode, pTrans));
   mInfo("trans:%d, used to drop topic:%s", pTrans->id, pTopic->name);
+
   MND_TMQ_RETURN_CHECK(mndCheckTopicPrivilege(pMnode, pReq->info.conn.user, MND_OPER_DROP_TOPIC, pTopic));
   MND_TMQ_RETURN_CHECK(mndCheckDbPrivilegeByName(pMnode, pReq->info.conn.user, MND_OPER_READ_DB, pTopic->db));
-  MND_TMQ_RETURN_CHECK(mndDropConsumerByTopic(pMnode, pTrans, dropReq.name));
+//  MND_TMQ_RETURN_CHECK(mndDropConsumerByTopic(pMnode, pTrans, dropReq.name));
   MND_TMQ_RETURN_CHECK(mndDropSubByTopic(pMnode, pTrans, dropReq.name));
 
   if (pTopic->ntbUid != 0) {
diff --git a/source/dnode/mnode/impl/src/mndVgroup.c b/source/dnode/mnode/impl/src/mndVgroup.c
index 57a7453eac..5cfc896a1c 100644
--- a/source/dnode/mnode/impl/src/mndVgroup.c
+++ b/source/dnode/mnode/impl/src/mndVgroup.c
@@ -877,7 +877,7 @@ int32_t mndAllocVgroup(SMnode *pMnode, SDbObj *pDb, SVgObj **ppVgroups) {
     pVgroup->dbUid = pDb->uid;
     pVgroup->replica = pDb->cfg.replications;
 
-    if (mndGetAvailableDnode(pMnode, pDb, pVgroup, pArray) != 0) {
+    if ((code = mndGetAvailableDnode(pMnode, pDb, pVgroup, pArray)) != 0) {
       goto _OVER;
     }
 
diff --git a/utils/test/c/tmq_taosx_ci.c b/utils/test/c/tmq_taosx_ci.c
index 51d134a463..2f6a5fa59b 100644
--- a/utils/test/c/tmq_taosx_ci.c
+++ b/utils/test/c/tmq_taosx_ci.c
@@ -596,6 +596,7 @@ tmq_t* build_consumer() {
   tmq_conf_set(conf, "enable.auto.commit", "true");
   tmq_conf_set(conf, "auto.offset.reset", "earliest");
   tmq_conf_set(conf, "msg.consume.excluded", "1");
+//  tmq_conf_set(conf, "max.poll.interval.ms", "20000");
 
   if (g_conf.snapShot) {
     tmq_conf_set(conf, "experimental.snapshot.enable", "true");