diff --git a/include/common/tglobal.h b/include/common/tglobal.h
index 1c5510ba0d..bef581a31b 100644
--- a/include/common/tglobal.h
+++ b/include/common/tglobal.h
@@ -145,6 +145,7 @@ extern bool    tsUseAdapter;
 extern int32_t tsMetaCacheMaxSize;
 extern int32_t tsSlowLogThreshold;
 extern int32_t tsSlowLogScope;
+extern int32_t tsTimeSeriesThreshold;
 
 // client
 extern int32_t tsMinSlidingTime;
diff --git a/include/common/tgrant.h b/include/common/tgrant.h
index 46e09a56b6..31d34add24 100644
--- a/include/common/tgrant.h
+++ b/include/common/tgrant.h
@@ -30,6 +30,8 @@ extern "C" {
 #define GRANTS_COL_MAX_LEN 196
 #endif
 
+#define GRANT_HEART_BEAT_MIN 2
+
 typedef enum {
   TSDB_GRANT_ALL,
   TSDB_GRANT_TIME,
diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index af44184de6..d1d38ca2f8 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1464,6 +1464,11 @@ typedef struct {
   int32_t learnerProgress;  // use one reservered
 } SVnodeLoad;
 
+typedef struct {
+  int32_t vgId;
+  int64_t nTimeSeries;
+} SVnodeLoadLite;
+
 typedef struct {
   int8_t  syncState;
   int64_t syncTerm;
@@ -1511,6 +1516,16 @@ int32_t tSerializeSStatusReq(void* buf, int32_t bufLen, SStatusReq* pReq);
 int32_t tDeserializeSStatusReq(void* buf, int32_t bufLen, SStatusReq* pReq);
 void    tFreeSStatusReq(SStatusReq* pReq);
 
+typedef struct {
+  int32_t dnodeId;
+  int64_t clusterId;
+  SArray* pVloads;
+} SNotifyReq;
+
+int32_t tSerializeSNotifyReq(void* buf, int32_t bufLen, SNotifyReq* pReq);
+int32_t tDeserializeSNotifyReq(void* buf, int32_t bufLen, SNotifyReq* pReq);
+void    tFreeSNotifyReq(SNotifyReq* pReq);
+
 typedef struct {
   int32_t dnodeId;
   int64_t clusterId;
diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index dd9a1af67c..7e030bef3f 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -179,8 +179,7 @@ enum { // WARN: new msg should be appended to segment tail
   TD_DEF_MSG_TYPE(TDMT_MND_STREAM_HEARTBEAT, "stream-heartbeat", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_RETRIEVE_IP_WHITE, "retrieve-ip-white", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_GET_USER_WHITELIST, "get-user-whitelist", NULL, NULL)
-  TD_DEF_MSG_TYPE(TDMT_MND_MAX_MSG, "mnd-max", NULL, NULL)
-
+  TD_DEF_MSG_TYPE(TDMT_MND_NOTIFY, "notify", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_BALANCE_VGROUP_LEADER, "balance-vgroup-leader", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_RESTORE_DNODE, "restore-dnode", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_PAUSE_STREAM, "pause-stream", NULL, NULL)
@@ -189,6 +188,8 @@ enum { // WARN: new msg should be appended to segment tail
   TD_DEF_MSG_TYPE(TDMT_MND_STREAM_BEGIN_CHECKPOINT, "stream-begin-checkpoint", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_STREAM_NODECHANGE_CHECK, "stream-nodechange-check", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_TRIM_DB_TIMER, "trim-db-tmr", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_MND_GRANT_NOTIFY, "grant-notify", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_MND_MAX_MSG, "mnd-max", NULL, NULL)
 
   TD_NEW_MSG_SEG(TDMT_VND_MSG)
   TD_DEF_MSG_TYPE(TDMT_VND_SUBMIT, "submit", SSubmitReq, SSubmitRsp)
diff --git a/include/libs/executor/storageapi.h b/include/libs/executor/storageapi.h
index 0a240dd8f5..d21fb8c459 100644
--- a/include/libs/executor/storageapi.h
+++ b/include/libs/executor/storageapi.h
@@ -142,6 +142,7 @@ typedef struct SSnapContext {
 typedef struct {
   int64_t uid;
   int64_t ctbNum;
+  int32_t colNum;
 } SMetaStbStats;
 
 // void    tqReaderSetColIdList(STqReader *pReader, SArray *pColIdList);
@@ -285,8 +286,8 @@ typedef struct SStoreMeta {
 
   // db name, vgId, numOfTables, numOfSTables
   int32_t (*getNumOfChildTables)(
-      void* pVnode, int64_t uid,
-      int64_t* numOfTables);  // int32_t metaGetStbStats(SMeta *pMeta, int64_t uid, SMetaStbStats *pInfo);
+      void* pVnode, int64_t uid, int64_t* numOfTables,
+      int32_t* numOfCols);  // int32_t metaGetStbStats(SMeta *pMeta, int64_t uid, SMetaStbStats *pInfo);
   void (*getBasicInfo)(void* pVnode, const char** dbname, int32_t* vgId, int64_t* numOfTables,
                        int64_t* numOfNormalTables);  // vnodeGetInfo(void *pVnode, const char **dbname, int32_t *vgId) &
                                                      // metaGetTbNum(SMeta *pMeta) & metaGetNtbNum(SMeta *pMeta);
diff --git a/include/libs/monitor/monitor.h b/include/libs/monitor/monitor.h
index 607179c446..708953f45e 100644
--- a/include/libs/monitor/monitor.h
+++ b/include/libs/monitor/monitor.h
@@ -191,7 +191,7 @@ typedef struct {
 } SMonBmInfo;
 
 typedef struct {
-  SArray *pVloads;  // SVnodeLoad
+  SArray *pVloads;  // SVnodeLoad/SVnodeLoadLite
 } SMonVloadInfo;
 
 typedef struct {
diff --git a/include/os/osThread.h b/include/os/osThread.h
index 3fdafe2c34..f0b79ac2c9 100644
--- a/include/os/osThread.h
+++ b/include/os/osThread.h
@@ -46,7 +46,7 @@ typedef HANDLE             TdThreadMutexAttr;  // windows api
 typedef struct {
   SRWLOCK lock;
   int8_t  excl;
-} TdThreadRwlock;                               // pthread api
+} TdThreadRwlock;                               // windows api
 typedef pthread_attr_t     TdThreadAttr;        // pthread api
 typedef pthread_once_t     TdThreadOnce;        // pthread api
 typedef HANDLE             TdThreadRwlockAttr;  // windows api
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 791fe34440..868cd927d7 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -144,6 +144,7 @@ bool    tsUseAdapter = false;
 int32_t tsMetaCacheMaxSize = -1;  // MB
 int32_t tsSlowLogThreshold = 3;   // seconds
 int32_t tsSlowLogScope = SLOW_LOG_TYPE_ALL;
+int32_t tsTimeSeriesThreshold = 50;
 
 /*
  * denote if the server needs to compress response message at the application layer to client, including query rsp,
@@ -635,6 +636,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddInt32(pCfg, "trimVDbIntervalSec", tsTrimVDbIntervalSec, 1, 100000, CFG_SCOPE_SERVER) != 0) return -1;
   if (cfgAddInt32(pCfg, "uptimeInterval", tsUptimeInterval, 1, 100000, CFG_SCOPE_SERVER) != 0) return -1;
   if (cfgAddInt32(pCfg, "queryRsmaTolerance", tsQueryRsmaTolerance, 0, 900000, CFG_SCOPE_SERVER) != 0) return -1;
+  if (cfgAddInt32(pCfg, "timeseriesThreshold", tsTimeSeriesThreshold, 0, 2000, CFG_SCOPE_SERVER) != 0) return -1;
 
   if (cfgAddInt64(pCfg, "walFsyncDataSizeLimit", tsWalFsyncDataSizeLimit, 100 * 1024 * 1024, INT64_MAX,
                   CFG_SCOPE_SERVER) != 0)
@@ -1043,6 +1045,7 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
   tsTrimVDbIntervalSec = cfgGetItem(pCfg, "trimVDbIntervalSec")->i32;
   tsUptimeInterval = cfgGetItem(pCfg, "uptimeInterval")->i32;
   tsQueryRsmaTolerance = cfgGetItem(pCfg, "queryRsmaTolerance")->i32;
+  tsTimeSeriesThreshold = cfgGetItem(pCfg, "timeseriesThreshold")->i32;
 
   tsWalFsyncDataSizeLimit = cfgGetItem(pCfg, "walFsyncDataSizeLimit")->i64;
 
@@ -1458,6 +1461,8 @@ int32_t taosApplyLocalCfg(SConfig *pCfg, char *name) {
         tqDebugFlag = cfgGetItem(pCfg, "tqDebugFlag")->i32;
       } else if (strcasecmp("ttlFlushThreshold", name) == 0) {
         tsTtlFlushThreshold = cfgGetItem(pCfg, "ttlFlushThreshold")->i32;
+      } else if (strcasecmp("timeseriesThreshold", name) == 0) {
+        tsTimeSeriesThreshold = cfgGetItem(pCfg, "timeseriesThreshold")->i32;
       }
       break;
     }
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index fd39ae98d9..a9f83cc21a 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -1035,6 +1035,68 @@ int32_t tDeserializeSMDropFullTextReq(void *buf, int32_t bufLen, SMDropFullTextR
   return 0;
 }
 
+int32_t tSerializeSNotifyReq(void *buf, int32_t bufLen, SNotifyReq *pReq) {
+  SEncoder encoder = {0};
+  tEncoderInit(&encoder, buf, bufLen);
+
+  if (tStartEncode(&encoder) < 0) return -1;
+
+  if (tEncodeI32(&encoder, pReq->dnodeId) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->clusterId) < 0) return -1;
+
+  int32_t nVgroup = taosArrayGetSize(pReq->pVloads);
+  if (tEncodeI32(&encoder, nVgroup) < 0) return -1;
+  for (int32_t i = 0; i < nVgroup; ++i) {
+    SVnodeLoadLite *vload = TARRAY_GET_ELEM(pReq->pVloads, i);
+    if (tEncodeI32(&encoder, vload->vgId) < 0) return -1;
+    if (tEncodeI64(&encoder, vload->nTimeSeries) < 0) return -1;
+  }
+
+  tEndEncode(&encoder);
+
+  int32_t tlen = encoder.pos;
+  tEncoderClear(&encoder);
+  return tlen;
+}
+
+int32_t tDeserializeSNotifyReq(void *buf, int32_t bufLen, SNotifyReq *pReq) {
+  int32_t  code = TSDB_CODE_INVALID_MSG;
+  SDecoder decoder = {0};
+  tDecoderInit(&decoder, buf, bufLen);
+
+  if (tStartDecode(&decoder) < 0) goto _exit;
+  if (tDecodeI32(&decoder, &pReq->dnodeId) < 0) goto _exit;
+  if (tDecodeI64(&decoder, &pReq->clusterId) < 0) goto _exit;
+  int32_t nVgroup = 0;
+  if (tDecodeI32(&decoder, &nVgroup) < 0) goto _exit;
+  if (nVgroup > 0) {
+    pReq->pVloads = taosArrayInit(nVgroup, sizeof(SVnodeLoadLite));
+    if (!pReq->pVloads) {
+      code = TSDB_CODE_OUT_OF_MEMORY;
+      goto _exit;
+    }
+    for (int32_t i = 0; i < nVgroup; ++i) {
+      SVnodeLoadLite vload;
+      if (tDecodeI32(&decoder, &(vload.vgId)) < 0) goto _exit;
+      if (tDecodeI64(&decoder, &(vload.nTimeSeries)) < 0) goto _exit;
+      taosArrayPush(pReq->pVloads, &vload);
+    }
+  }
+
+  code = 0;
+  
+_exit:
+  tEndDecode(&decoder);
+  tDecoderClear(&decoder);
+  return code;
+}
+
+void tFreeSNotifyReq(SNotifyReq *pReq) {
+  if (pReq) {
+    taosArrayDestroy(pReq->pVloads);
+  }
+}
+
 int32_t tSerializeSStatusReq(void *buf, int32_t bufLen, SStatusReq *pReq) {
   SEncoder encoder = {0};
   tEncoderInit(&encoder, buf, bufLen);
diff --git a/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h b/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h
index 35947c001b..9e43c2af47 100644
--- a/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h
+++ b/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h
@@ -28,6 +28,7 @@ typedef struct SDnodeMgmt {
   const char            *path;
   const char            *name;
   TdThread               statusThread;
+  TdThread               notifyThread;
   TdThread               monitorThread;
   TdThread               crashReportThread;
   SSingleWorker          mgmtWorker;
@@ -36,6 +37,7 @@ typedef struct SDnodeMgmt {
   ProcessDropNodeFp      processDropNodeFp;
   SendMonitorReportFp    sendMonitorReportFp;
   GetVnodeLoadsFp        getVnodeLoadsFp;
+  GetVnodeLoadsFp        getVnodeLoadsLiteFp;
   GetMnodeLoadsFp        getMnodeLoadsFp;
   GetQnodeLoadsFp        getQnodeLoadsFp;
   int32_t                statusSeq;
@@ -44,17 +46,21 @@ typedef struct SDnodeMgmt {
 // dmHandle.c
 SArray *dmGetMsgHandles();
 void    dmSendStatusReq(SDnodeMgmt *pMgmt);
+void    dmSendNotifyReq(SDnodeMgmt *pMgmt);
 int32_t dmProcessConfigReq(SDnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t dmProcessAuthRsp(SDnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t dmProcessGrantRsp(SDnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t dmProcessServerRunStatus(SDnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t dmProcessRetrieve(SDnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t dmProcessGrantReq(void *pInfo, SRpcMsg *pMsg);
+int32_t dmProcessGrantNotify(void *pInfo, SRpcMsg *pMsg);
 
 // dmWorker.c
 int32_t dmPutNodeMsgToMgmtQueue(SDnodeMgmt *pMgmt, SRpcMsg *pMsg);
 int32_t dmStartStatusThread(SDnodeMgmt *pMgmt);
 void    dmStopStatusThread(SDnodeMgmt *pMgmt);
+int32_t dmStartNotifyThread(SDnodeMgmt *pMgmt);
+void    dmStopNotifyThread(SDnodeMgmt *pMgmt);
 int32_t dmStartMonitorThread(SDnodeMgmt *pMgmt);
 void    dmStopMonitorThread(SDnodeMgmt *pMgmt);
 int32_t dmStartCrashReportThread(SDnodeMgmt *pMgmt);
diff --git a/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c b/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c
index a56387079f..c7af552da4 100644
--- a/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c
+++ b/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c
@@ -170,6 +170,36 @@ void dmSendStatusReq(SDnodeMgmt *pMgmt) {
   dmProcessStatusRsp(pMgmt, &rpcRsp);
 }
 
+void dmSendNotifyReq(SDnodeMgmt *pMgmt) {
+  SNotifyReq req = {0};
+
+  taosThreadRwlockRdlock(&pMgmt->pData->lock);
+  req.dnodeId = pMgmt->pData->dnodeId;
+  taosThreadRwlockUnlock(&pMgmt->pData->lock);
+
+  req.clusterId = pMgmt->pData->clusterId;
+
+  SMonVloadInfo vinfo = {0};
+  (*pMgmt->getVnodeLoadsLiteFp)(&vinfo);
+  req.pVloads = vinfo.pVloads;
+
+  int32_t contLen = tSerializeSNotifyReq(NULL, 0, &req);
+  void   *pHead = rpcMallocCont(contLen);
+  tSerializeSNotifyReq(pHead, contLen, &req);
+  tFreeSNotifyReq(&req);
+
+  SRpcMsg rpcMsg = {.pCont = pHead,
+                    .contLen = contLen,
+                    .msgType = TDMT_MND_NOTIFY,
+                    .info.ahandle = (void *)0x9527,
+                    .info.refId = 0,
+                    .info.noResp = 1};
+
+  SEpSet epSet = {0};
+  dmGetMnodeEpSet(pMgmt->pData, &epSet);
+  rpcSendRequest(pMgmt->msgCb.clientRpc, &epSet, &rpcMsg, NULL);
+}
+
 int32_t dmProcessAuthRsp(SDnodeMgmt *pMgmt, SRpcMsg *pMsg) {
   dError("auth rsp is received, but not supported yet");
   return 0;
@@ -395,6 +425,7 @@ SArray *dmGetMsgHandles() {
 
   // Requests handled by MNODE
   if (dmSetMgmtHandle(pArray, TDMT_MND_GRANT, dmPutNodeMsgToMgmtQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_MND_GRANT_NOTIFY, dmPutNodeMsgToMgmtQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_AUTH_RSP, dmPutNodeMsgToMgmtQueue, 0) == NULL) goto _OVER;
 
   code = 0;
diff --git a/source/dnode/mgmt/mgmt_dnode/src/dmInt.c b/source/dnode/mgmt/mgmt_dnode/src/dmInt.c
index e754b08daf..966891feb8 100644
--- a/source/dnode/mgmt/mgmt_dnode/src/dmInt.c
+++ b/source/dnode/mgmt/mgmt_dnode/src/dmInt.c
@@ -20,6 +20,11 @@ static int32_t dmStartMgmt(SDnodeMgmt *pMgmt) {
   if (dmStartStatusThread(pMgmt) != 0) {
     return -1;
   }
+#ifdef TD_ENTERPRISE
+  if (dmStartNotifyThread(pMgmt) != 0) {
+    return -1;
+  }
+#endif
   if (dmStartMonitorThread(pMgmt) != 0) {
     return -1;
   }
@@ -33,6 +38,7 @@ static void dmStopMgmt(SDnodeMgmt *pMgmt) {
   pMgmt->pData->stopped = true;
   dmStopMonitorThread(pMgmt);
   dmStopStatusThread(pMgmt);
+  dmStopNotifyThread(pMgmt);
   dmStopCrashReportThread(pMgmt);
 }
 
@@ -52,6 +58,7 @@ static int32_t dmOpenMgmt(SMgmtInputOpt *pInput, SMgmtOutputOpt *pOutput) {
   pMgmt->processDropNodeFp = pInput->processDropNodeFp;
   pMgmt->sendMonitorReportFp = pInput->sendMonitorReportFp;
   pMgmt->getVnodeLoadsFp = pInput->getVnodeLoadsFp;
+  pMgmt->getVnodeLoadsLiteFp = pInput->getVnodeLoadsLiteFp;
   pMgmt->getMnodeLoadsFp = pInput->getMnodeLoadsFp;
   pMgmt->getQnodeLoadsFp = pInput->getQnodeLoadsFp;
 
diff --git a/source/dnode/mgmt/mgmt_dnode/src/dmWorker.c b/source/dnode/mgmt/mgmt_dnode/src/dmWorker.c
index 76cb65b53a..5b2bd0783a 100644
--- a/source/dnode/mgmt/mgmt_dnode/src/dmWorker.c
+++ b/source/dnode/mgmt/mgmt_dnode/src/dmWorker.c
@@ -53,6 +53,26 @@ static void *dmStatusThreadFp(void *param) {
   return NULL;
 }
 
+tsem_t       dmNotifySem;
+static void *dmNotifyThreadFp(void *param) {
+  SDnodeMgmt *pMgmt = param;
+  int64_t     lastTime = taosGetTimestampMs();
+  setThreadName("dnode-notify");
+
+  if (tsem_init(&dmNotifySem, 0, 0) != 0) {
+    return NULL;
+  }
+
+  while (1) {
+    if (pMgmt->pData->dropped || pMgmt->pData->stopped) break;
+
+    tsem_wait(&dmNotifySem);
+    dmSendNotifyReq(pMgmt);
+  }
+
+  return NULL;
+}
+
 static void *dmMonitorThreadFp(void *param) {
   SDnodeMgmt *pMgmt = param;
   int64_t     lastTime = taosGetTimestampMs();
@@ -132,7 +152,6 @@ static void *dmCrashReportThreadFp(void *param) {
   return NULL;
 }
 
-
 int32_t dmStartStatusThread(SDnodeMgmt *pMgmt) {
   TdThreadAttr thAttr;
   taosThreadAttrInit(&thAttr);
@@ -154,6 +173,29 @@ void dmStopStatusThread(SDnodeMgmt *pMgmt) {
   }
 }
 
+int32_t dmStartNotifyThread(SDnodeMgmt *pMgmt) {
+  TdThreadAttr thAttr;
+  taosThreadAttrInit(&thAttr);
+  taosThreadAttrSetDetachState(&thAttr, PTHREAD_CREATE_JOINABLE);
+  if (taosThreadCreate(&pMgmt->notifyThread, &thAttr, dmNotifyThreadFp, pMgmt) != 0) {
+    dError("failed to create notify thread since %s", strerror(errno));
+    return -1;
+  }
+
+  taosThreadAttrDestroy(&thAttr);
+  tmsgReportStartup("dnode-notify", "initialized");
+  return 0;
+}
+
+void dmStopNotifyThread(SDnodeMgmt *pMgmt) {
+  if (taosCheckPthreadValid(pMgmt->notifyThread)) {
+    tsem_post(&dmNotifySem);
+    taosThreadJoin(pMgmt->notifyThread, NULL);
+    taosThreadClear(&pMgmt->notifyThread);
+  }
+  tsem_destroy(&dmNotifySem);
+}
+
 int32_t dmStartMonitorThread(SDnodeMgmt *pMgmt) {
   TdThreadAttr thAttr;
   taosThreadAttrInit(&thAttr);
@@ -251,6 +293,11 @@ static void dmProcessMgmtQueue(SQueueInfo *pInfo, SRpcMsg *pMsg) {
     case TDMT_MND_GRANT:
       code = dmProcessGrantReq(&pMgmt->pData->clusterId, pMsg);
       break;
+    case TDMT_MND_GRANT_NOTIFY:
+#ifdef MAKE_JENKINS_HAPPY
+      code = dmProcessGrantNotify(NULL, pMsg);
+#endif
+      break;
     default:
       terrno = TSDB_CODE_MSG_NOT_PROCESSED;
       dGError("msg:%p, not processed in mgmt queue", pMsg);
diff --git a/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c b/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
index 42eb89b5fb..3fc3ca4cea 100644
--- a/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
+++ b/source/dnode/mgmt/mgmt_mnode/src/mmHandle.c
@@ -178,6 +178,7 @@ SArray *mmGetMsgHandles() {
   if (dmSetMgmtHandle(pArray, TDMT_MND_KILL_CONN, mmPutMsgToWriteQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_HEARTBEAT, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_STATUS, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
+  if (dmSetMgmtHandle(pArray, TDMT_MND_NOTIFY, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_SYSTABLE_RETRIEVE, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_AUTH, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
   if (dmSetMgmtHandle(pArray, TDMT_MND_SHOW_VARIABLES, mmPutMsgToReadQueue, 0) == NULL) goto _OVER;
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
index 0251b9b636..a13c8fcc57 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmHandle.c
@@ -40,6 +40,28 @@ void vmGetVnodeLoads(SVnodeMgmt *pMgmt, SMonVloadInfo *pInfo, bool isReset) {
   taosThreadRwlockUnlock(&pMgmt->lock);
 }
 
+void vmGetVnodeLoadsLite(SVnodeMgmt *pMgmt, SMonVloadInfo *pInfo) {
+  pInfo->pVloads = taosArrayInit(pMgmt->state.totalVnodes, sizeof(SVnodeLoadLite));
+  if (!pInfo->pVloads) return;
+
+  taosThreadRwlockRdlock(&pMgmt->lock);
+
+  void *pIter = taosHashIterate(pMgmt->hash, NULL);
+  while (pIter) {
+    SVnodeObj **ppVnode = pIter;
+    if (ppVnode == NULL || *ppVnode == NULL) continue;
+
+    SVnodeObj     *pVnode = *ppVnode;
+    SVnodeLoadLite vload = {0};
+    if (vnodeGetLoadLite(pVnode->pImpl, &vload) == 0) {
+      taosArrayPush(pInfo->pVloads, &vload);
+    }
+    pIter = taosHashIterate(pMgmt->hash, pIter);
+  }
+
+  taosThreadRwlockUnlock(&pMgmt->lock);
+}
+
 void vmGetMonitorInfo(SVnodeMgmt *pMgmt, SMonVmInfo *pInfo) {
   SMonVloadInfo vloads = {0};
   vmGetVnodeLoads(pMgmt, &vloads, true);
diff --git a/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h b/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
index 98489433b9..1c6625ba1a 100644
--- a/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
+++ b/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
@@ -119,6 +119,7 @@ int32_t dmProcessNodeMsg(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 // dmMonitor.c
 void dmSendMonitorReport();
 void dmGetVnodeLoads(SMonVloadInfo *pInfo);
+void dmGetVnodeLoadsLite(SMonVloadInfo *pInfo);
 void dmGetMnodeLoads(SMonMloadInfo *pInfo);
 void dmGetQnodeLoads(SQnodeLoad *pInfo);
 
diff --git a/source/dnode/mgmt/node_mgmt/inc/dmNodes.h b/source/dnode/mgmt/node_mgmt/inc/dmNodes.h
index 5f36309038..7d635c6bdc 100644
--- a/source/dnode/mgmt/node_mgmt/inc/dmNodes.h
+++ b/source/dnode/mgmt/node_mgmt/inc/dmNodes.h
@@ -35,6 +35,7 @@ void smGetMonitorInfo(void *pMgmt, SMonSmInfo *pInfo);
 void bmGetMonitorInfo(void *pMgmt, SMonBmInfo *pInfo);
 
 void vmGetVnodeLoads(void *pMgmt, SMonVloadInfo *pInfo, bool isReset);
+void vmGetVnodeLoadsLite(void *pMgmt, SMonVloadInfo *pInfo);
 void mmGetMnodeLoads(void *pMgmt, SMonMloadInfo *pInfo);
 void qmGetQnodeLoads(void *pMgmt, SQnodeLoad *pInfo);
 
diff --git a/source/dnode/mgmt/node_mgmt/src/dmEnv.c b/source/dnode/mgmt/node_mgmt/src/dmEnv.c
index 320c9db37d..8815647047 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmEnv.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmEnv.c
@@ -419,6 +419,7 @@ SMgmtInputOpt dmBuildMgmtInputOpt(SMgmtWrapper *pWrapper) {
       .processDropNodeFp = dmProcessDropNodeReq,
       .sendMonitorReportFp = dmSendMonitorReport,
       .getVnodeLoadsFp = dmGetVnodeLoads,
+      .getVnodeLoadsLiteFp = dmGetVnodeLoadsLite,
       .getMnodeLoadsFp = dmGetMnodeLoads,
       .getQnodeLoadsFp = dmGetQnodeLoads,
   };
diff --git a/source/dnode/mgmt/node_mgmt/src/dmMonitor.c b/source/dnode/mgmt/node_mgmt/src/dmMonitor.c
index 4ab56ed682..b3db7c3058 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmMonitor.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmMonitor.c
@@ -119,6 +119,17 @@ void dmGetVnodeLoads(SMonVloadInfo *pInfo) {
   }
 }
 
+void dmGetVnodeLoadsLite(SMonVloadInfo *pInfo) {
+  SDnode       *pDnode = dmInstance();
+  SMgmtWrapper *pWrapper = &pDnode->wrappers[VNODE];
+  if (dmMarkWrapper(pWrapper) == 0) {
+    if (pWrapper->pMgmt != NULL) {
+      vmGetVnodeLoadsLite(pWrapper->pMgmt, pInfo);
+    }
+    dmReleaseWrapper(pWrapper);
+  }
+}
+
 void dmGetMnodeLoads(SMonMloadInfo *pInfo) {
   SDnode       *pDnode = dmInstance();
   SMgmtWrapper *pWrapper = &pDnode->wrappers[MNODE];
diff --git a/source/dnode/mgmt/node_util/inc/dmUtil.h b/source/dnode/mgmt/node_util/inc/dmUtil.h
index ad87bc91c6..9d97e6ae9f 100644
--- a/source/dnode/mgmt/node_util/inc/dmUtil.h
+++ b/source/dnode/mgmt/node_util/inc/dmUtil.h
@@ -121,6 +121,7 @@ typedef struct {
   ProcessDropNodeFp   processDropNodeFp;
   SendMonitorReportFp sendMonitorReportFp;
   GetVnodeLoadsFp     getVnodeLoadsFp;
+  GetVnodeLoadsFp     getVnodeLoadsLiteFp;
   GetMnodeLoadsFp     getMnodeLoadsFp;
   GetQnodeLoadsFp     getQnodeLoadsFp;
 } SMgmtInputOpt;
diff --git a/source/dnode/mnode/impl/src/mndDnode.c b/source/dnode/mnode/impl/src/mndDnode.c
index f38cf70dc6..a2c7f7b5cf 100644
--- a/source/dnode/mnode/impl/src/mndDnode.c
+++ b/source/dnode/mnode/impl/src/mndDnode.c
@@ -71,6 +71,7 @@ static int32_t mndProcessDropDnodeReq(SRpcMsg *pReq);
 static int32_t mndProcessConfigDnodeReq(SRpcMsg *pReq);
 static int32_t mndProcessConfigDnodeRsp(SRpcMsg *pRsp);
 static int32_t mndProcessStatusReq(SRpcMsg *pReq);
+static int32_t mndProcessNotifyReq(SRpcMsg *pReq);
 static int32_t mndProcessRestoreDnodeReq(SRpcMsg *pReq);
 
 static int32_t mndRetrieveConfigs(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBlock, int32_t rows);
@@ -80,6 +81,12 @@ static void    mndCancelGetNextDnode(SMnode *pMnode, void *pIter);
 
 static int32_t mndMCfgGetValInt32(SMCfgDnodeReq *pInMCfgReq, int32_t opLen, int32_t *pOutValue);
 
+#ifndef TD_ENTERPRISE
+static int32_t mndUpdClusterInfo(SRpcMsg *pReq) { return 0; }
+#else
+int32_t mndUpdClusterInfo(SRpcMsg *pReq);
+#endif
+
 int32_t mndInitDnode(SMnode *pMnode) {
   SSdbTable table = {
       .sdbType = SDB_DNODE,
@@ -97,6 +104,7 @@ int32_t mndInitDnode(SMnode *pMnode) {
   mndSetMsgHandle(pMnode, TDMT_MND_CONFIG_DNODE, mndProcessConfigDnodeReq);
   mndSetMsgHandle(pMnode, TDMT_DND_CONFIG_DNODE_RSP, mndProcessConfigDnodeRsp);
   mndSetMsgHandle(pMnode, TDMT_MND_STATUS, mndProcessStatusReq);
+  mndSetMsgHandle(pMnode, TDMT_MND_NOTIFY, mndProcessNotifyReq);
   mndSetMsgHandle(pMnode, TDMT_MND_DNODE_LIST, mndProcessDnodeListReq);
   mndSetMsgHandle(pMnode, TDMT_MND_SHOW_VARIABLES, mndProcessShowVariablesReq);
   mndSetMsgHandle(pMnode, TDMT_MND_RESTORE_DNODE, mndProcessRestoreDnodeReq);
@@ -543,6 +551,10 @@ static int32_t mndProcessStatusReq(SRpcMsg *pReq) {
   mGTrace("dnode:%d, status received, accessTimes:%d check:%d online:%d reboot:%d changed:%d statusSeq:%d", pDnode->id,
           pDnode->accessTimes, needCheck, online, reboot, dnodeChanged, statusReq.statusSeq);
 
+  if (reboot) {
+    tsGrantHBInterval = GRANT_HEART_BEAT_MIN;
+  }
+
   for (int32_t v = 0; v < taosArrayGetSize(statusReq.pVloads); ++v) {
     SVnodeLoad *pVload = taosArrayGet(statusReq.pVloads, v);
 
@@ -676,6 +688,45 @@ static int32_t mndProcessStatusReq(SRpcMsg *pReq) {
 _OVER:
   mndReleaseDnode(pMnode, pDnode);
   taosArrayDestroy(statusReq.pVloads);
+#ifdef MAKE_JENKINS_HAPPY
+  mndUpdClusterInfo(pReq);
+#endif
+  return code;
+}
+
+static int32_t mndProcessNotifyReq(SRpcMsg *pReq) {
+  SMnode    *pMnode = pReq->info.node;
+  SNotifyReq notifyReq = {0};
+  int32_t    code = 0;
+
+  if ((code = tDeserializeSNotifyReq(pReq->pCont, pReq->contLen, &notifyReq)) != 0) {
+    terrno = code;
+    goto _OVER;
+  }
+
+  int64_t clusterid = mndGetClusterId(pMnode);
+  if (notifyReq.clusterId != 0 && notifyReq.clusterId != clusterid) {
+    code = TSDB_CODE_MND_DNODE_DIFF_CLUSTER;
+    mWarn("dnode:%d, its clusterid:%" PRId64 " differ from current cluster:%" PRId64 " since %s", notifyReq.dnodeId,
+          notifyReq.clusterId, clusterid, tstrerror(code));
+    goto _OVER;
+  }
+
+  int32_t nVgroup = taosArrayGetSize(notifyReq.pVloads);
+  for (int32_t v = 0; v < nVgroup; ++v) {
+    SVnodeLoadLite *pVload = taosArrayGet(notifyReq.pVloads, v);
+
+    SVgObj *pVgroup = mndAcquireVgroup(pMnode, pVload->vgId);
+    if (pVgroup != NULL) {
+      pVgroup->numOfTimeSeries = pVload->nTimeSeries;
+      mndReleaseVgroup(pMnode, pVgroup);
+    }
+  }
+_OVER:
+#ifdef MAKE_JENKINS_HAPPY
+  mndUpdClusterInfo(pReq);
+#endif
+  tFreeSNotifyReq(&notifyReq);
   return code;
 }
 
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index d0a242c8ea..c47c4994b7 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -1678,6 +1678,10 @@ static int32_t mndAddSuperTableColumn(const SStbObj *pOld, SStbObj *pNew, SArray
     return -1;
   }
 
+  if ((terrno = grantCheck(TSDB_GRANT_TIMESERIES)) != 0) {
+    return -1;
+  }
+
   pNew->numOfColumns = pNew->numOfColumns + ncols;
   if (mndAllocStbSchemas(pOld, pNew) != 0) {
     return -1;
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index e15f5f911d..727d790b91 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -86,11 +86,13 @@ void   *vnodeGetIdx(void *pVnode);
 void   *vnodeGetIvtIdx(void *pVnode);
 
 int32_t vnodeGetCtbNum(SVnode *pVnode, int64_t suid, int64_t *num);
+int32_t vnodeGetStbColumnNum(SVnode *pVnode, tb_uid_t suid, int *num);
 int32_t vnodeGetTimeSeriesNum(SVnode *pVnode, int64_t *num);
 int32_t vnodeGetAllCtbNum(SVnode *pVnode, int64_t *num);
 
 void    vnodeResetLoad(SVnode *pVnode, SVnodeLoad *pLoad);
 int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad);
+int32_t vnodeGetLoadLite(SVnode *pVnode, SVnodeLoadLite *pLoad);
 int32_t vnodeValidateTableHash(SVnode *pVnode, char *tableFName);
 
 int32_t vnodePreProcessWriteMsg(SVnode *pVnode, SRpcMsg *pMsg);
@@ -134,7 +136,7 @@ bool     metaTbInFilterCache(void *pVnode, tb_uid_t suid, int8_t type);
 int32_t  metaPutTbToFilterCache(void *pVnode, tb_uid_t suid, int8_t type);
 int32_t  metaSizeOfTbFilterCache(void *pVnode, int8_t type);
 
-int32_t metaGetStbStats(void *pVnode, int64_t uid, int64_t *numOfTables);
+int32_t metaGetStbStats(void *pVnode, int64_t uid, int64_t *numOfTables, int32_t *numOfCols);
 
 // tsdb
 typedef struct STsdbReader STsdbReader;
@@ -288,10 +290,10 @@ typedef struct {
   int64_t numOfSTables;
   int64_t numOfCTables;
   int64_t numOfNTables;
-  int64_t numOfCmprTables;
+  int64_t numOfReportedTimeSeries;
   int64_t numOfNTimeSeries;
   int64_t numOfTimeSeries;
-  int64_t itvTimeSeries;
+  // int64_t itvTimeSeries;
   int64_t pointsWritten;
   int64_t totalStorage;
   int64_t compStorage;
diff --git a/source/dnode/vnode/src/inc/meta.h b/source/dnode/vnode/src/inc/meta.h
index 4f25bf31a2..c74ccf6c11 100644
--- a/source/dnode/vnode/src/inc/meta.h
+++ b/source/dnode/vnode/src/inc/meta.h
@@ -71,7 +71,7 @@ int32_t metaCacheDrop(SMeta* pMeta, int64_t uid);
 int32_t metaStatsCacheUpsert(SMeta* pMeta, SMetaStbStats* pInfo);
 int32_t metaStatsCacheDrop(SMeta* pMeta, int64_t uid);
 int32_t metaStatsCacheGet(SMeta* pMeta, int64_t uid, SMetaStbStats* pInfo);
-void    metaUpdateStbStats(SMeta* pMeta, int64_t uid, int64_t delta);
+void    metaUpdateStbStats(SMeta* pMeta, int64_t uid, int64_t deltaCtb, int32_t deltaCol);
 int32_t metaUidFilterCacheGet(SMeta* pMeta, uint64_t suid, const void* pKey, int32_t keyLen, LRUHandle** pHandle);
 
 struct SMeta {
diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index f4e3b0bd58..2952c863cb 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -170,7 +170,8 @@ int32_t metaTbGroupCacheClear(SMeta* pMeta, uint64_t suid);
 int metaAddIndexToSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
 int metaDropIndexFromSTable(SMeta* pMeta, int64_t version, SDropIndexReq* pReq);
 
-int64_t       metaGetTimeSeriesNum(SMeta* pMeta);
+int64_t       metaGetTimeSeriesNum(SMeta* pMeta, int type);
+void          metaUpdTimeSeriesNum(SMeta* pMeta);
 SMCtbCursor*  metaOpenCtbCursor(void* pVnode, tb_uid_t uid, int lock);
 int32_t       metaResumeCtbCursor(SMCtbCursor* pCtbCur, int8_t first);
 void          metaPauseCtbCursor(SMCtbCursor* pCtbCur);
diff --git a/source/dnode/vnode/src/meta/metaQuery.c b/source/dnode/vnode/src/meta/metaQuery.c
index c74f36eaa2..2bf73198aa 100644
--- a/source/dnode/vnode/src/meta/metaQuery.c
+++ b/source/dnode/vnode/src/meta/metaQuery.c
@@ -696,22 +696,30 @@ int64_t metaGetTbNum(SMeta *pMeta) {
   return pMeta->pVnode->config.vndStats.numOfCTables + pMeta->pVnode->config.vndStats.numOfNTables;
 }
 
-// N.B. Called by statusReq per second
-int64_t metaGetTimeSeriesNum(SMeta *pMeta) {
-  // sum of (number of columns of stable -  1) * number of ctables (excluding timestamp column)
-  int64_t nTables = metaGetTbNum(pMeta);
-  if (nTables - pMeta->pVnode->config.vndStats.numOfCmprTables > 100 ||
-      pMeta->pVnode->config.vndStats.numOfTimeSeries <= 0 ||
-      ++pMeta->pVnode->config.vndStats.itvTimeSeries % (60 * 5) == 0) {
-    int64_t num = 0;
-    vnodeGetTimeSeriesNum(pMeta->pVnode, &num);
-    pMeta->pVnode->config.vndStats.numOfTimeSeries = num;
+void metaUpdTimeSeriesNum(SMeta *pMeta) {
+  int64_t nCtbTimeSeries = 0;
+  if (vnodeGetTimeSeriesNum(pMeta->pVnode, &nCtbTimeSeries) == 0) {
+    atomic_store_64(&pMeta->pVnode->config.vndStats.numOfTimeSeries, nCtbTimeSeries);
+  }
+}
 
-    pMeta->pVnode->config.vndStats.itvTimeSeries = (TD_VID(pMeta->pVnode) % 100) * 2;
-    pMeta->pVnode->config.vndStats.numOfCmprTables = nTables;
+static FORCE_INLINE int64_t metaGetTimeSeriesNumImpl(SMeta *pMeta, bool forceUpd) {
+  // sum of (number of columns of stable -  1) * number of ctables (excluding timestamp column)
+  SVnodeStats *pStats = &pMeta->pVnode->config.vndStats;
+  if (forceUpd || pStats->numOfTimeSeries <= 0) {
+    metaUpdTimeSeriesNum(pMeta);
   }
 
-  return pMeta->pVnode->config.vndStats.numOfTimeSeries + pMeta->pVnode->config.vndStats.numOfNTimeSeries;
+  return pStats->numOfTimeSeries + pStats->numOfNTimeSeries;
+}
+
+// type: 1 reported timeseries
+int64_t metaGetTimeSeriesNum(SMeta *pMeta, int type) {
+  int64_t nTimeSeries = metaGetTimeSeriesNumImpl(pMeta, false);
+  if (type == 1) {
+    atomic_store_64(&pMeta->pVnode->config.vndStats.numOfReportedTimeSeries, nTimeSeries);
+  }
+  return nTimeSeries;
 }
 
 typedef struct {
@@ -1509,9 +1517,10 @@ _exit:
   return code;
 }
 
-int32_t metaGetStbStats(void *pVnode, int64_t uid, int64_t *numOfTables) {
+int32_t metaGetStbStats(void *pVnode, int64_t uid, int64_t *numOfTables, int32_t *numOfCols) {
   int32_t code = 0;
-  *numOfTables = 0;
+
+  if (!numOfTables && !numOfCols) goto _exit;
 
   SVnode *pVnodeObj = pVnode;
   metaRLock(pVnodeObj->pMeta);
@@ -1520,19 +1529,26 @@ int32_t metaGetStbStats(void *pVnode, int64_t uid, int64_t *numOfTables) {
   SMetaStbStats state = {0};
   if (metaStatsCacheGet(pVnodeObj->pMeta, uid, &state) == TSDB_CODE_SUCCESS) {
     metaULock(pVnodeObj->pMeta);
-    *numOfTables = state.ctbNum;
+    if (numOfTables) *numOfTables = state.ctbNum;
+    if (numOfCols) *numOfCols = state.colNum;
+    ASSERTS(state.colNum > 0, "vgId:%d, suid:%" PRIi64 " nCols:%d <= 0 in metaCache", TD_VID(pVnodeObj), uid,
+            state.colNum);
     goto _exit;
   }
 
   // slow path: search TDB
   int64_t ctbNum = 0;
+  int32_t colNum = 0;
   vnodeGetCtbNum(pVnode, uid, &ctbNum);
-
+  vnodeGetStbColumnNum(pVnode, uid, &colNum);
   metaULock(pVnodeObj->pMeta);
-  *numOfTables = ctbNum;
+
+  if (numOfTables) *numOfTables = ctbNum;
+  if (numOfCols) *numOfCols = colNum;
 
   state.uid = uid;
   state.ctbNum = ctbNum;
+  state.colNum = colNum;
 
   // upsert the cache
   metaWLock(pVnodeObj->pMeta);
@@ -1543,12 +1559,12 @@ _exit:
   return code;
 }
 
-void metaUpdateStbStats(SMeta *pMeta, int64_t uid, int64_t delta) {
+void metaUpdateStbStats(SMeta *pMeta, int64_t uid, int64_t deltaCtb, int32_t deltaCol) {
   SMetaStbStats stats = {0};
 
   if (metaStatsCacheGet(pMeta, uid, &stats) == TSDB_CODE_SUCCESS) {
-    stats.ctbNum += delta;
-
+    stats.ctbNum += deltaCtb;
+    stats.colNum += deltaCol;
     metaStatsCacheUpsert(pMeta, &stats);
   }
 }
diff --git a/source/dnode/vnode/src/meta/metaTable.c b/source/dnode/vnode/src/meta/metaTable.c
index 9a298a4bb7..0a25bdc9c7 100644
--- a/source/dnode/vnode/src/meta/metaTable.c
+++ b/source/dnode/vnode/src/meta/metaTable.c
@@ -15,6 +15,8 @@
 
 #include "meta.h"
 
+extern tsem_t dmNotifySem;
+
 static int  metaSaveJsonVarToIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const SSchema *pSchema);
 static int  metaDelJsonVarFromIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const SSchema *pSchema);
 static int  metaSaveToTbDb(SMeta *pMeta, const SMetaEntry *pME);
@@ -26,7 +28,7 @@ static int  metaSaveToSkmDb(SMeta *pMeta, const SMetaEntry *pME);
 static int  metaUpdateCtbIdx(SMeta *pMeta, const SMetaEntry *pME);
 static int  metaUpdateSuidIdx(SMeta *pMeta, const SMetaEntry *pME);
 static int  metaUpdateTagIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry);
-static int  metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type);
+static int  metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type, tb_uid_t *pSuid);
 static void metaDestroyTagIdxKey(STagIdxKey *pTagIdxKey);
 // opt ins_tables query
 static int metaUpdateBtimeIdx(SMeta *pMeta, const SMetaEntry *pME);
@@ -34,6 +36,7 @@ static int metaDeleteBtimeIdx(SMeta *pMeta, const SMetaEntry *pME);
 static int metaUpdateNcolIdx(SMeta *pMeta, const SMetaEntry *pME);
 static int metaDeleteNcolIdx(SMeta *pMeta, const SMetaEntry *pME);
 
+
 static void metaGetEntryInfo(const SMetaEntry *pEntry, SMetaInfo *pInfo) {
   pInfo->uid = pEntry->uid;
   pInfo->version = pEntry->version;
@@ -191,6 +194,14 @@ int metaDelJsonVarFromIdx(SMeta *pMeta, const SMetaEntry *pCtbEntry, const SSche
   return 0;
 }
 
+static inline void metaTimeSeriesNotifyCheck(SMeta *pMeta) {
+#ifdef TD_ENTERPRISE
+  int64_t nTimeSeries = metaGetTimeSeriesNum(pMeta, 0);
+  int64_t deltaTS = nTimeSeries - pMeta->pVnode->config.vndStats.numOfReportedTimeSeries;
+  if (deltaTS > tsTimeSeriesThreshold) tsem_post(&dmNotifySem);
+#endif
+}
+
 int metaCreateSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
   SMetaEntry  me = {0};
   int         kLen = 0;
@@ -292,7 +303,7 @@ int metaDropSTable(SMeta *pMeta, int64_t verison, SVDropStbReq *pReq, SArray *tb
 
   for (int32_t iChild = 0; iChild < taosArrayGetSize(tbUidList); iChild++) {
     tb_uid_t uid = *(tb_uid_t *)taosArrayGet(tbUidList, iChild);
-    metaDropTableByUid(pMeta, uid, NULL);
+    metaDropTableByUid(pMeta, uid, NULL, NULL);
   }
 
   // drop super table
@@ -304,8 +315,12 @@ _drop_super_table:
   tdbTbDelete(pMeta->pUidIdx, &pReq->suid, sizeof(tb_uid_t), pMeta->txn);
   tdbTbDelete(pMeta->pSuidIdx, &pReq->suid, sizeof(tb_uid_t), pMeta->txn);
 
+  metaStatsCacheDrop(pMeta, pReq->suid);
+
   metaULock(pMeta);
 
+  metaUpdTimeSeriesNum(pMeta);
+
 _exit:
   tdbFree(pKey);
   tdbFree(pData);
@@ -376,6 +391,8 @@ int metaAlterSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
   nStbEntry.stbEntry.schemaRow = pReq->schemaRow;
   nStbEntry.stbEntry.schemaTag = pReq->schemaTag;
 
+  int32_t deltaCol = pReq->schemaRow.nCols - oStbEntry.stbEntry.schemaRow.nCols;
+
   metaWLock(pMeta);
   // compare two entry
   if (oStbEntry.stbEntry.schemaRow.version != pReq->schemaRow.version) {
@@ -390,8 +407,18 @@ int metaAlterSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {
 
   // metaStatsCacheDrop(pMeta, nStbEntry.uid);
 
+  if (deltaCol != 0) {
+    metaUpdateStbStats(pMeta, pReq->suid, 0, deltaCol);
+  }
   metaULock(pMeta);
 
+  if (deltaCol != 0) {
+    int64_t ctbNum;
+    metaGetStbStats(pMeta->pVnode, pReq->suid, &ctbNum, NULL);
+    pMeta->pVnode->config.vndStats.numOfTimeSeries += (ctbNum * deltaCol);
+  }
+
+_exit:
   if (oStbEntry.pBuf) taosMemoryFree(oStbEntry.pBuf);
   tDecoderClear(&dc);
   tdbTbcClose(pTbDbc);
@@ -734,6 +761,7 @@ int metaCreateTable(SMeta *pMeta, int64_t ver, SVCreateTbReq *pReq, STableMetaRs
   metaReaderClear(&mr);
 
   // build SMetaEntry
+  SVnodeStats *pStats = &pMeta->pVnode->config.vndStats;
   me.version = ver;
   me.type = pReq->type;
   me.uid = pReq->uid;
@@ -767,10 +795,13 @@ int metaCreateTable(SMeta *pMeta, int64_t ver, SVCreateTbReq *pReq, STableMetaRs
     }
 #endif
 
-    ++pMeta->pVnode->config.vndStats.numOfCTables;
+    ++pStats->numOfCTables;
+    int32_t nCols = 0;
+    metaGetStbStats(pMeta->pVnode, me.ctbEntry.suid, 0, &nCols);
+    pStats->numOfTimeSeries += nCols - 1;
 
     metaWLock(pMeta);
-    metaUpdateStbStats(pMeta, me.ctbEntry.suid, 1);
+    metaUpdateStbStats(pMeta, me.ctbEntry.suid, 1, 0);
     metaUidCacheClear(pMeta, me.ctbEntry.suid);
     metaTbGroupCacheClear(pMeta, me.ctbEntry.suid);
     metaULock(pMeta);
@@ -782,12 +813,14 @@ int metaCreateTable(SMeta *pMeta, int64_t ver, SVCreateTbReq *pReq, STableMetaRs
     me.ntbEntry.schemaRow = pReq->ntb.schemaRow;
     me.ntbEntry.ncid = me.ntbEntry.schemaRow.pSchema[me.ntbEntry.schemaRow.nCols - 1].colId + 1;
 
-    ++pMeta->pVnode->config.vndStats.numOfNTables;
-    pMeta->pVnode->config.vndStats.numOfNTimeSeries += me.ntbEntry.schemaRow.nCols - 1;
+    ++pStats->numOfNTables;
+    pStats->numOfNTimeSeries += me.ntbEntry.schemaRow.nCols - 1;
   }
 
   if (metaHandleEntry(pMeta, &me) < 0) goto _err;
 
+  metaTimeSeriesNotifyCheck(pMeta);
+
   if (pMetaRsp) {
     *pMetaRsp = taosMemoryCalloc(1, sizeof(STableMetaRsp));
 
@@ -817,7 +850,8 @@ int metaDropTable(SMeta *pMeta, int64_t version, SVDropTbReq *pReq, SArray *tbUi
   void    *pData = NULL;
   int      nData = 0;
   int      rc = 0;
-  tb_uid_t uid;
+  tb_uid_t uid = 0;
+  tb_uid_t suid = 0;
   int      type;
 
   rc = tdbTbGet(pMeta->pNameIdx, pReq->name, strlen(pReq->name) + 1, &pData, &nData);
@@ -828,9 +862,19 @@ int metaDropTable(SMeta *pMeta, int64_t version, SVDropTbReq *pReq, SArray *tbUi
   uid = *(tb_uid_t *)pData;
 
   metaWLock(pMeta);
-  metaDropTableByUid(pMeta, uid, &type);
+  rc = metaDropTableByUid(pMeta, uid, &type, &suid);
   metaULock(pMeta);
 
+  if (rc < 0) goto _exit;
+
+  if (type == TSDB_CHILD_TABLE) {
+    int32_t      nCols = 0;
+    SVnodeStats *pStats = &pMeta->pVnode->config.vndStats;
+    if (metaGetStbStats(pMeta->pVnode, suid, NULL, &nCols) == 0) {
+      pStats->numOfTimeSeries -= nCols - 1;
+    }
+  }
+
   if ((type == TSDB_CHILD_TABLE || type == TSDB_NORMAL_TABLE) && tbUids) {
     taosArrayPush(tbUids, &uid);
   }
@@ -839,20 +883,48 @@ int metaDropTable(SMeta *pMeta, int64_t version, SVDropTbReq *pReq, SArray *tbUi
     *tbUid = uid;
   }
 
+_exit:
   tdbFree(pData);
-  return 0;
+  return rc;
 }
 
 void metaDropTables(SMeta *pMeta, SArray *tbUids) {
   if (taosArrayGetSize(tbUids) == 0) return;
 
+  int64_t    nCtbDropped = 0;
+  SSHashObj *suidHash = tSimpleHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT));
+
   metaWLock(pMeta);
   for (int i = 0; i < taosArrayGetSize(tbUids); ++i) {
     tb_uid_t uid = *(tb_uid_t *)taosArrayGet(tbUids, i);
-    metaDropTableByUid(pMeta, uid, NULL);
+    tb_uid_t suid = 0;
+    int      type;
+    metaDropTableByUid(pMeta, uid, &type, &suid);
+    if (type == TSDB_CHILD_TABLE && suid != 0 && suidHash) {
+      int64_t *pVal = tSimpleHashGet(suidHash, &suid, sizeof(tb_uid_t));
+      if (pVal) {
+        nCtbDropped = *pVal + 1;
+      } else {
+        nCtbDropped = 1;
+      }
+      tSimpleHashPut(suidHash, &suid, sizeof(tb_uid_t), &nCtbDropped, sizeof(int64_t));
+    }
     metaDebug("batch drop table:%" PRId64, uid);
   }
   metaULock(pMeta);
+
+  // update timeseries
+  void   *pCtbDropped = NULL;
+  int32_t iter = 0;
+  while ((pCtbDropped = tSimpleHashIterate(suidHash, pCtbDropped, &iter))) {
+    tb_uid_t    *pSuid = tSimpleHashGetKey(pCtbDropped, NULL);
+    int32_t      nCols = 0;
+    SVnodeStats *pStats = &pMeta->pVnode->config.vndStats;
+    if (metaGetStbStats(pMeta->pVnode, *pSuid, NULL, &nCols) == 0) {
+      pStats->numOfTimeSeries -= *(int64_t *)pCtbDropped * (nCols - 1);
+    }
+  }
+  tSimpleHashCleanup(suidHash);
 }
 
 static int32_t metaFilterTableByHash(SMeta *pMeta, SArray *uidList) {
@@ -987,7 +1059,7 @@ static int metaDeleteTtl(SMeta *pMeta, const SMetaEntry *pME) {
   return ttlMgrDeleteTtl(pMeta->pTtlMgr, &ctx);
 }
 
-static int metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type) {
+static int metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type, tb_uid_t *pSuid) {
   void      *pData = NULL;
   int        nData = 0;
   int        rc = 0;
@@ -1012,9 +1084,11 @@ static int metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type) {
   if (type) *type = e.type;
 
   if (e.type == TSDB_CHILD_TABLE) {
+    if (pSuid) *pSuid = e.ctbEntry.suid;
     void *tData = NULL;
     int   tLen = 0;
 
+
     if (tdbTbGet(pMeta->pUidIdx, &e.ctbEntry.suid, sizeof(tb_uid_t), &tData, &tLen) == 0) {
       STbDbKey tbDbKey = {.uid = e.ctbEntry.suid, .version = ((SUidIdxVal *)tData)[0].version};
       if (tdbTbGet(pMeta->pTbDb, &tbDbKey, sizeof(tbDbKey), &tData, &tLen) == 0) {
@@ -1075,8 +1149,7 @@ static int metaDropTableByUid(SMeta *pMeta, tb_uid_t uid, int *type) {
     tdbTbDelete(pMeta->pCtbIdx, &(SCtbIdxKey){.suid = e.ctbEntry.suid, .uid = uid}, sizeof(SCtbIdxKey), pMeta->txn);
 
     --pMeta->pVnode->config.vndStats.numOfCTables;
-
-    metaUpdateStbStats(pMeta, e.ctbEntry.suid, -1);
+    metaUpdateStbStats(pMeta, e.ctbEntry.suid, -1, 0);
     metaUidCacheClear(pMeta, e.ctbEntry.suid);
     metaTbGroupCacheClear(pMeta, e.ctbEntry.suid);
   } else if (e.type == TSDB_NORMAL_TABLE) {
@@ -1243,6 +1316,9 @@ static int metaAlterTableColumn(SMeta *pMeta, int64_t version, SVAlterTbReq *pAl
         terrno = TSDB_CODE_VND_COL_ALREADY_EXISTS;
         goto _err;
       }
+      if ((terrno = grantCheck(TSDB_GRANT_TIMESERIES)) < 0) {
+        goto _err;
+      }
       pSchema->version++;
       pSchema->nCols++;
       pNewSchema = taosMemoryMalloc(sizeof(SSchema) * pSchema->nCols);
@@ -1255,6 +1331,7 @@ static int metaAlterTableColumn(SMeta *pMeta, int64_t version, SVAlterTbReq *pAl
       strcpy(pSchema->pSchema[entry.ntbEntry.schemaRow.nCols - 1].name, pAlterTbReq->colName);
 
       ++pMeta->pVnode->config.vndStats.numOfNTimeSeries;
+      metaTimeSeriesNotifyCheck(pMeta);
       break;
     case TSDB_ALTER_TABLE_DROP_COLUMN:
       if (pColumn == NULL) {
diff --git a/source/dnode/vnode/src/vnd/vnodeQuery.c b/source/dnode/vnode/src/vnd/vnodeQuery.c
index 01dd062866..01292f33e4 100644
--- a/source/dnode/vnode/src/vnd/vnodeQuery.c
+++ b/source/dnode/vnode/src/vnd/vnodeQuery.c
@@ -388,7 +388,7 @@ int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad) {
   pLoad->cacheUsage = tsdbCacheGetUsage(pVnode);
   pLoad->numOfCachedTables = tsdbCacheGetElems(pVnode);
   pLoad->numOfTables = metaGetTbNum(pVnode->pMeta);
-  pLoad->numOfTimeSeries = metaGetTimeSeriesNum(pVnode->pMeta);
+  pLoad->numOfTimeSeries = metaGetTimeSeriesNum(pVnode->pMeta, 1);
   pLoad->totalStorage = (int64_t)3 * 1073741824;
   pLoad->compStorage = (int64_t)2 * 1073741824;
   pLoad->pointsWritten = 100;
@@ -400,6 +400,15 @@ int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad) {
   return 0;
 }
 
+int32_t vnodeGetLoadLite(SVnode *pVnode, SVnodeLoadLite *pLoad) {
+  SSyncState syncState = syncGetState(pVnode->sync);
+  if (syncState.state == TAOS_SYNC_STATE_LEADER) {
+    pLoad->vgId = TD_VID(pVnode);
+    pLoad->nTimeSeries = metaGetTimeSeriesNum(pVnode->pMeta, 1);
+    return 0;
+  }
+  return -1;
+}
 /**
  * @brief Reset the statistics value by monitor interval
  *
@@ -544,8 +553,8 @@ int32_t vnodeGetCtbNum(SVnode *pVnode, int64_t suid, int64_t *num) {
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t vnodeGetStbColumnNum(SVnode *pVnode, tb_uid_t suid, int *num) {
-  SSchemaWrapper *pSW = metaGetTableSchema(pVnode->pMeta, suid, -1, 1);
+int32_t vnodeGetStbColumnNum(SVnode *pVnode, tb_uid_t suid, int *num) {
+  SSchemaWrapper *pSW = metaGetTableSchema(pVnode->pMeta, suid, -1, 0);
   if (pSW) {
     *num = pSW->nCols;
     tDeleteSchemaWrapper(pSW);
@@ -634,10 +643,8 @@ int32_t vnodeGetTimeSeriesNum(SVnode *pVnode, int64_t *num) {
     tb_uid_t suid = *(tb_uid_t *)taosArrayGet(suidList, i);
 
     int64_t ctbNum = 0;
-    metaGetStbStats(pVnode, suid, &ctbNum);
-
-    int numOfCols = 0;
-    vnodeGetStbColumnNum(pVnode, suid, &numOfCols);
+    int32_t numOfCols = 0;
+    metaGetStbStats(pVnode, suid, &ctbNum, &numOfCols);
 
     *num += ctbNum * (numOfCols - 1);
   }
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 474128007a..b95a948937 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -3928,7 +3928,7 @@ static void buildVnodeFilteredTbCount(SOperatorInfo* pOperator, STableCountScanO
       pAPI->metaFn.getTableUidByName(pInfo->readHandle.vnode, pSupp->stbNameFilter, &uid);
 
       int64_t numOfChildTables = 0;
-      pAPI->metaFn.getNumOfChildTables(pInfo->readHandle.vnode, uid, &numOfChildTables);
+      pAPI->metaFn.getNumOfChildTables(pInfo->readHandle.vnode, uid, &numOfChildTables, NULL);
 
       fillTableCountScanDataBlock(pSupp, dbName, pSupp->stbNameFilter, numOfChildTables, pRes);
     } else {
@@ -3979,7 +3979,7 @@ static void buildVnodeGroupedStbTableCount(STableCountScanOperatorInfo* pInfo, S
   pRes->info.id.groupId = groupId;
 
   int64_t ctbNum = 0;
-  int32_t code = pAPI->metaFn.getNumOfChildTables(pInfo->readHandle.vnode, stbUid, &ctbNum);
+  int32_t code = pAPI->metaFn.getNumOfChildTables(pInfo->readHandle.vnode, stbUid, &ctbNum, NULL);
   fillTableCountScanDataBlock(pSupp, dbName, varDataVal(stbName), ctbNum, pRes);
 }