diff --git a/example/src/tmq.c b/example/src/tmq.c
index 56f210081b43fb4d3f1185129b5a94c27c8f03a0..0d5e49c592405dfa1121b1ee81191b0a44529d2a 100644
--- a/example/src/tmq.c
+++ b/example/src/tmq.c
@@ -48,7 +48,6 @@ int32_t init_env() {
     return -1;
   }
   taos_free_result(pRes);
-  sleep(1);
 
   pRes = taos_query(pConn, "use abc1");
   if (taos_errno(pRes) != 0) {
diff --git a/include/client/taos.h b/include/client/taos.h
index 72cb7bfa96fa939bc5cb41580eaab9e642d851be..5b200ed0af91b26f0785aa2b83812f125a188b71 100644
--- a/include/client/taos.h
+++ b/include/client/taos.h
@@ -27,10 +27,7 @@ typedef void   TAOS;
 typedef void   TAOS_STMT;
 typedef void   TAOS_RES;
 typedef void **TAOS_ROW;
-#if 0
-typedef void   TAOS_STREAM;
-#endif
-typedef void TAOS_SUB;
+typedef void   TAOS_SUB;
 
 // Data type definition
 #define TSDB_DATA_TYPE_NULL       0   // 1 bytes
@@ -192,12 +189,6 @@ DLL_EXPORT TAOS_RES *taos_consume(TAOS_SUB *tsub);
 DLL_EXPORT void      taos_unsubscribe(TAOS_SUB *tsub, int keepProgress);
 #endif
 
-#if 0
-DLL_EXPORT TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sql, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
-                                         int64_t stime, void *param, void (*callback)(void *));
-DLL_EXPORT void         taos_close_stream(TAOS_STREAM *tstr);
-#endif
-
 DLL_EXPORT int       taos_load_table_info(TAOS *taos, const char *tableNameList);
 DLL_EXPORT TAOS_RES *taos_schemaless_insert(TAOS *taos, char *lines[], int numLines, int protocol, int precision);
 
@@ -237,12 +228,8 @@ DLL_EXPORT const char *tmq_err2str(tmq_resp_err_t);
 DLL_EXPORT tmq_resp_err_t tmq_subscribe(tmq_t *tmq, const tmq_list_t *topic_list);
 DLL_EXPORT tmq_resp_err_t tmq_unsubscribe(tmq_t *tmq);
 DLL_EXPORT tmq_resp_err_t tmq_subscription(tmq_t *tmq, tmq_list_t **topics);
-DLL_EXPORT TAOS_RES      *tmq_consumer_poll(tmq_t *tmq, int64_t blocking_time);
+DLL_EXPORT TAOS_RES      *tmq_consumer_poll(tmq_t *tmq, int64_t wait_time);
 DLL_EXPORT tmq_resp_err_t tmq_consumer_close(tmq_t *tmq);
-#if 0
-DLL_EXPORT tmq_resp_err_t tmq_assign(tmq_t* tmq, const tmq_topic_vgroup_list_t* vgroups);
-DLL_EXPORT tmq_resp_err_t tmq_assignment(tmq_t* tmq, tmq_topic_vgroup_list_t** vgroups);
-#endif
 DLL_EXPORT tmq_resp_err_t tmq_commit(tmq_t *tmq, const tmq_topic_vgroup_list_t *offsets, int32_t async);
 #if 0
 DLL_EXPORT tmq_resp_err_t tmq_commit_message(tmq_t* tmq, const tmq_message_t* tmqmessage, int32_t async);
@@ -269,7 +256,7 @@ DLL_EXPORT char   *tmq_get_topic_name(TAOS_RES *res);
 DLL_EXPORT int32_t tmq_get_vgroup_id(TAOS_RES *res);
 // TODO
 #if 0
-DLL_EXPORT char   *tmq_get_block_table_name(TAOS_RES *res);
+DLL_EXPORT char   *tmq_get_table_name(TAOS_RES *res);
 #endif
 
 #if 0
diff --git a/source/client/src/tmq.c b/source/client/src/tmq.c
index f9540bc8fc9fdffdc13b40f98c9a27cda2ed845c..a9acb781bea03b2589125c21e07fe0427d081bcf 100644
--- a/source/client/src/tmq.c
+++ b/source/client/src/tmq.c
@@ -56,7 +56,7 @@ struct tmq_conf_t {
   int8_t         autoCommit;
   int8_t         resetOffset;
   uint16_t       port;
-  uint16_t       autoCommitInterval;
+  int32_t        autoCommitInterval;
   char*          ip;
   char*          user;
   char*          pass;
@@ -76,8 +76,9 @@ struct tmq_t {
   char           groupId[TSDB_CGROUP_LEN];
   char           clientId[256];
   int8_t         autoCommit;
-  int64_t        consumerId;
+  int32_t        autoCommitInterval;
   int32_t        resetOffsetCfg;
+  int64_t        consumerId;
   tmq_commit_cb* commit_cb;
 
   // status
@@ -87,6 +88,11 @@ struct tmq_t {
   int32_t epSkipCnt;
   int64_t pollCnt;
 
+  // timer
+  tmr_h hbTimer;
+  tmr_h reportTimer;
+  tmr_h commitTimer;
+
   // connection
   STscObj* pTscObj;
 
@@ -111,6 +117,12 @@ enum {
   TMQ_CONSUMER_STATUS__READY,
 };
 
+enum {
+  TMQ_DELAYED_TASK__HB = 1,
+  TMQ_DELAYED_TASK__REPORT,
+  TMQ_DELAYED_TASK__COMMIT,
+};
+
 typedef struct {
   // statistics
   int64_t pollCnt;
@@ -280,6 +292,50 @@ static int32_t tmqMakeTopicVgKey(char* dst, const char* topicName, int32_t vg) {
   return sprintf(dst, "%s:%d", topicName, vg);
 }
 
+void tmqAssignDelayedHbTask(void* param, void* tmrId) {
+  tmq_t*  tmq = (tmq_t*)param;
+  int8_t* pTaskType = taosAllocateQitem(sizeof(int8_t));
+  *pTaskType = TMQ_DELAYED_TASK__HB;
+  taosWriteQitem(tmq->delayedTask, pTaskType);
+}
+
+void tmqAssignDelayedCommitTask(void* param, void* tmrId) {
+  tmq_t*  tmq = (tmq_t*)param;
+  int8_t* pTaskType = taosAllocateQitem(sizeof(int8_t));
+  *pTaskType = TMQ_DELAYED_TASK__COMMIT;
+  taosWriteQitem(tmq->delayedTask, pTaskType);
+}
+
+void tmqAssignDelayedReportTask(void* param, void* tmrId) {
+  tmq_t*  tmq = (tmq_t*)param;
+  int8_t* pTaskType = taosAllocateQitem(sizeof(int8_t));
+  *pTaskType = TMQ_DELAYED_TASK__REPORT;
+  taosWriteQitem(tmq->delayedTask, pTaskType);
+}
+
+int32_t tmqHandleAllDelayedTask(tmq_t* tmq) {
+  STaosQall* qall = taosAllocateQall();
+  taosReadAllQitems(tmq->delayedTask, qall);
+  while (1) {
+    int8_t* pTaskType = NULL;
+    taosGetQitem(qall, (void**)&pTaskType);
+    if (pTaskType == NULL) break;
+
+    if (*pTaskType == TMQ_DELAYED_TASK__HB) {
+      tmqAskEp(tmq, false);
+      taosTmrReset(tmqAssignDelayedHbTask, 1000, tmq, tmqMgmt.timer, &tmq->hbTimer);
+    } else if (*pTaskType == TMQ_DELAYED_TASK__COMMIT) {
+      tmq_commit(tmq, NULL, true);
+      taosTmrReset(tmqAssignDelayedCommitTask, tmq->autoCommitInterval, tmq, tmqMgmt.timer, &tmq->commitTimer);
+    } else if (*pTaskType == TMQ_DELAYED_TASK__REPORT) {
+    } else {
+      ASSERT(0);
+    }
+  }
+  taosFreeQall(qall);
+  return 0;
+}
+
 void tmqClearUnhandleMsg(tmq_t* tmq) {
   SMqRspWrapper* msg = NULL;
   while (1) {
@@ -414,7 +470,9 @@ tmq_t* tmq_consumer_new(tmq_conf_t* conf, char* errstr, int32_t errstrLen) {
   // set conf
   strcpy(pTmq->clientId, conf->clientId);
   strcpy(pTmq->groupId, conf->groupId);
-  pTmq->autoCommit = conf->autoCommit;
+  /*pTmq->autoCommit = conf->autoCommit;*/
+  pTmq->autoCommit = 0;
+  pTmq->autoCommitInterval = conf->autoCommitInterval;
   pTmq->commit_cb = conf->commit_cb;
   pTmq->resetOffsetCfg = conf->resetOffset;
 
@@ -607,6 +665,14 @@ tmq_resp_err_t tmq_subscribe(tmq_t* tmq, const tmq_list_t* topic_list) {
     taosMsleep(500);
   }
 
+  // init hb timer
+  tmq->hbTimer = taosTmrStart(tmqAssignDelayedHbTask, 1000, tmq, tmqMgmt.timer);
+
+  // init auto commit timer
+  if (tmq->autoCommit) {
+    tmq->commitTimer = taosTmrStart(tmqAssignDelayedCommitTask, tmq->autoCommitInterval, tmq, tmqMgmt.timer);
+  }
+
   code = 0;
 FAIL:
   if (req.topicNames != NULL) taosArrayDestroyP(req.topicNames, taosMemoryFree);
@@ -1216,7 +1282,7 @@ TAOS_RES* tmq_consumer_poll(tmq_t* tmq, int64_t blocking_time) {
   }
 
   while (1) {
-    tmqAskEp(tmq, false);
+    tmqHandleAllDelayedTask(tmq);
     tmqPollImpl(tmq, blocking_time);
 
     /*tsem_wait(&tmq->rspSem);*/
diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index 207b7d84219750cf1d2110d30b4b6b6f9d69e842..d025ca3781a9db5262a09498cdd65a6652d019fc 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -61,7 +61,6 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
   walBuildIdxName(pWal, walGetCurFileFirstVer(pWal), fnameStr);
   TdFilePtr pIdxTFile = taosOpenFile(fnameStr, TD_FILE_WRITE | TD_FILE_READ);
 
-  // TODO:change to deserialize function
   if (pIdxTFile == NULL) {
     taosThreadMutexUnlock(&pWal->mutex);
     return -1;
@@ -73,7 +72,6 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
     return -1;
   }
   // read idx file and get log file pos
-  // TODO:change to deserialize function
   SWalIdxEntry entry;
   if (taosReadFile(pIdxTFile, &entry, sizeof(SWalIdxEntry)) != sizeof(SWalIdxEntry)) {
     taosThreadMutexUnlock(&pWal->mutex);
@@ -167,7 +165,7 @@ int32_t walEndSnapshot(SWal *pWal) {
   char fnameStr[WAL_FILE_LEN];
   // remove file
   for (int i = 0; i < deleteCnt; i++) {
-    SWalFileInfo *pInfo = taosArrayGet(pWal->fileInfoSet, i);
+    pInfo = taosArrayGet(pWal->fileInfoSet, i);
     walBuildLogName(pWal, pInfo->firstVer, fnameStr);
     taosRemoveFile(fnameStr);
     walBuildIdxName(pWal, pInfo->firstVer, fnameStr);
diff --git a/source/os/src/osSystem.c b/source/os/src/osSystem.c
index 148529170c7d50a633993efb4bf4a1496bc29683..62c1747619154257c68bac98bf1e26b1b38d25c5 100644
--- a/source/os/src/osSystem.c
+++ b/source/os/src/osSystem.c
@@ -39,11 +39,11 @@ void* taosLoadDll(const char* filename) {
 #else
   void* handle = dlopen(filename, RTLD_LAZY);
   if (!handle) {
-    //printf("load dll:%s failed, error:%s", filename, dlerror());
+    // printf("load dll:%s failed, error:%s", filename, dlerror());
     return NULL;
   }
 
-  //printf("dll %s loaded", filename);
+  // printf("dll %s loaded", filename);
 
   return handle;
 #endif
@@ -59,17 +59,17 @@ void* taosLoadSym(void* handle, char* name) {
   char* error = NULL;
 
   if ((error = dlerror()) != NULL) {
-    //printf("load sym:%s failed, error:%s", name, dlerror());
+    // printf("load sym:%s failed, error:%s", name, dlerror());
     return NULL;
   }
 
-  //printf("sym %s loaded", name);
+  // printf("sym %s loaded", name);
 
   return sym;
 #endif
 }
 
-void  taosCloseDll(void* handle) {
+void taosCloseDll(void* handle) {
 #if defined(WINDOWS)
   return;
 #elif defined(_TD_DARWIN_64)
@@ -100,7 +100,7 @@ int taosSetConsoleEcho(bool on) {
   struct termios term;
 
   if (tcgetattr(STDIN_FILENO, &term) == -1) {
-    perror("Cannot get the attribution of the terminal");
+    /*perror("Cannot get the attribution of the terminal");*/
     return -1;
   }
 
@@ -111,7 +111,7 @@ int taosSetConsoleEcho(bool on) {
 
   err = tcsetattr(STDIN_FILENO, TCSAFLUSH, &term);
   if (err == -1 || err == EINTR) {
-    printf("Cannot set the attribution of the terminal");
+    /*printf("Cannot set the attribution of the terminal");*/
     return -1;
   }
 
@@ -154,7 +154,7 @@ void taosSetTerminalMode() {
 
 int32_t taosGetOldTerminalMode() {
 #if defined(WINDOWS)
-  
+
 #else
   /* Make sure stdin is a terminal. */
   if (!isatty(STDIN_FILENO)) {
@@ -181,7 +181,7 @@ void taosResetTerminalMode() {
 #endif
 }
 
-TdCmdPtr taosOpenCmd(const char *cmd) {
+TdCmdPtr taosOpenCmd(const char* cmd) {
   if (cmd == NULL) return NULL;
 #ifdef WINDOWS
   return (TdCmdPtr)_popen(cmd, "r");
@@ -190,8 +190,8 @@ TdCmdPtr taosOpenCmd(const char *cmd) {
 #endif
 }
 
-int64_t taosGetLineCmd(TdCmdPtr pCmd, char ** __restrict ptrBuf) {
-  if (pCmd == NULL || ptrBuf == NULL ) {
+int64_t taosGetLineCmd(TdCmdPtr pCmd, char** __restrict ptrBuf) {
+  if (pCmd == NULL || ptrBuf == NULL) {
     return -1;
   }
   if (*ptrBuf != NULL) {
@@ -219,7 +219,7 @@ int32_t taosEOFCmd(TdCmdPtr pCmd) {
   return feof((FILE*)pCmd);
 }
 
-int64_t taosCloseCmd(TdCmdPtr *ppCmd) {
+int64_t taosCloseCmd(TdCmdPtr* ppCmd) {
   if (ppCmd == NULL || *ppCmd == NULL) {
     return 0;
   }
diff --git a/tests/script/tsim/tmq/basic1.sim b/tests/script/tsim/tmq/basic1.sim
index d7534338e1c0781cb911c2bcd4b3f19c730ff59e..0c96635a788ba18ab391cfad869e2a68e675954c 100644
--- a/tests/script/tsim/tmq/basic1.sim
+++ b/tests/script/tsim/tmq/basic1.sim
@@ -25,7 +25,7 @@ $rowsPerCtb = 10
 $tstart     = 1640966400000  # 2022-01-01 00:00:00.000
 #---- global parameters end ----#
 
-$pullDelay    = 5
+$pullDelay    = 3
 $ifcheckdata  = 1
 $showMsg      = 1
 $showRow      = 0
diff --git a/tests/script/tsim/tmq/basic2.sim b/tests/script/tsim/tmq/basic2.sim
index ac0d2bb6df1a228ed8576103f39a4ad70ff6c850..53f10e22475cc067a25b86b7aa0c46c342d0111c 100644
--- a/tests/script/tsim/tmq/basic2.sim
+++ b/tests/script/tsim/tmq/basic2.sim
@@ -25,7 +25,7 @@ $rowsPerCtb = 10
 $tstart     = 1640966400000  # 2022-01-01 00:00:00.000
 #---- global parameters end ----#
 
-$pullDelay    = 5
+$pullDelay    = 3
 $ifcheckdata  = 1
 $showMsg      = 1
 $showRow      = 0
diff --git a/tests/script/tsim/tmq/basic3.sim b/tests/script/tsim/tmq/basic3.sim
index c0ba2c97fb3528d72b67bd51b183c13f4d92e351..de771ba892ec01825fbed08464a7d3794a5226bf 100644
--- a/tests/script/tsim/tmq/basic3.sim
+++ b/tests/script/tsim/tmq/basic3.sim
@@ -25,7 +25,7 @@ $rowsPerCtb = 10
 $tstart     = 1640966400000  # 2022-01-01 00:00:00.000
 #---- global parameters end ----#
 
-$pullDelay    = 5
+$pullDelay    = 3
 $ifcheckdata  = 1
 $showMsg      = 1
 $showRow      = 0
diff --git a/tests/script/tsim/tmq/basic4.sim b/tests/script/tsim/tmq/basic4.sim
index 1eed93463cc37322fe523cc1a91984b7c2c32da3..42023bda7e1f5d5defd0266ae5a4146f50851314 100644
--- a/tests/script/tsim/tmq/basic4.sim
+++ b/tests/script/tsim/tmq/basic4.sim
@@ -25,7 +25,7 @@ $rowsPerCtb = 10
 $tstart     = 1640966400000  # 2022-01-01 00:00:00.000
 #---- global parameters end ----#
 
-$pullDelay    = 5
+$pullDelay    = 3
 $ifcheckdata  = 1
 $showMsg      = 1
 $showRow      = 0