From 496ae4ca893508ac78f7aef4b2165ad50339e0a0 Mon Sep 17 00:00:00 2001
From: dapan1121 <wpan@taosdata.com>
Date: Tue, 31 May 2022 14:03:47 +0800
Subject: [PATCH] schedule based on qnode's load

---
 include/common/tmsg.h                         | 39 ++++++++--
 include/common/tmsgdef.h                      |  1 +
 include/dnode/qnode/qnode.h                   | 14 ----
 include/libs/executor/dataSinkMgt.h           |  8 ++
 include/libs/monitor/monitor.h                |  5 ++
 include/libs/qworker/qworker.h                | 22 ++++--
 source/client/inc/clientInt.h                 |  5 +-
 source/client/src/clientHb.c                  |  4 +
 source/client/src/clientImpl.c                | 76 +++++++++++++++----
 source/common/src/tmsg.c                      | 72 +++++++++++++++---
 source/dnode/mgmt/mgmt_dnode/inc/dmInt.h      |  3 +-
 source/dnode/mgmt/mgmt_dnode/src/dmHandle.c   |  2 +
 source/dnode/mgmt/mgmt_dnode/src/dmInt.c      |  1 +
 source/dnode/mgmt/mgmt_qnode/src/qmHandle.c   |  8 ++
 source/dnode/mgmt/mgmt_vnode/src/vmWorker.c   |  2 +-
 source/dnode/mgmt/node_mgmt/inc/dmMgmt.h      |  1 +
 source/dnode/mgmt/node_mgmt/inc/dmNodes.h     |  1 +
 source/dnode/mgmt/node_mgmt/src/dmEnv.c       |  1 +
 source/dnode/mgmt/node_mgmt/src/dmMonitor.c   | 14 ++++
 source/dnode/mgmt/node_mgmt/src/dmTransport.c |  2 +-
 source/dnode/mgmt/node_util/inc/dmUtil.h      |  5 +-
 source/dnode/mnode/impl/inc/mndDef.h          |  1 +
 source/dnode/mnode/impl/inc/mndQnode.h        |  6 ++
 source/dnode/mnode/impl/src/mndDnode.c        |  7 ++
 source/dnode/mnode/impl/src/mndProfile.c      |  4 +
 source/dnode/mnode/impl/src/mndQnode.c        | 67 +++++++++-------
 source/dnode/qnode/src/qnode.c                | 22 ++++--
 source/libs/catalog/inc/catalogInt.h          | 14 ++--
 source/libs/catalog/src/catalog.c             |  6 +-
 source/libs/catalog/src/ctgCache.c            | 38 +++++-----
 source/libs/catalog/src/ctgRemote.c           |  2 +-
 source/libs/catalog/src/ctgUtil.c             |  8 +-
 source/libs/executor/inc/dataSinkInt.h        |  2 +
 source/libs/executor/src/dataDispatcher.c     | 24 +++++-
 source/libs/executor/src/dataSinkMgt.c        | 14 ++++
 source/libs/executor/src/scanoperator.c       |  2 +
 source/libs/monitor/src/monMsg.c              | 48 +++++++++++-
 source/libs/planner/src/planPhysiCreater.c    | 12 ++-
 source/libs/qcom/src/querymsg.c               |  2 +-
 source/libs/qworker/inc/qwInt.h               | 36 +++++++--
 source/libs/qworker/src/qwMsg.c               | 23 ++++--
 source/libs/qworker/src/qwUtil.c              | 21 ++---
 source/libs/qworker/src/qworker.c             | 27 ++++++-
 source/libs/scheduler/src/schJob.c            | 50 +++++++-----
 source/libs/scheduler/src/scheduler.c         |  8 +-
 45 files changed, 549 insertions(+), 181 deletions(-)

diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index faf4addb4b..b78937e964 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -791,19 +791,24 @@ typedef struct {
 int32_t tSerializeSQnodeListReq(void* buf, int32_t bufLen, SQnodeListReq* pReq);
 int32_t tDeserializeSQnodeListReq(void* buf, int32_t bufLen, SQnodeListReq* pReq);
 
+typedef struct SQueryNodeAddr {
+  int32_t nodeId;  // vgId or qnodeId
+  SEpSet  epSet;
+} SQueryNodeAddr;
+
 typedef struct {
-  SArray* addrsList;  // SArray<SQueryNodeAddr>
+  SQueryNodeAddr addr;
+  uint64_t       load;
+} SQueryNodeLoad;
+
+typedef struct {
+  SArray* qnodeList;  // SArray<SQueryNodeLoad>
 } SQnodeListRsp;
 
 int32_t tSerializeSQnodeListRsp(void* buf, int32_t bufLen, SQnodeListRsp* pRsp);
 int32_t tDeserializeSQnodeListRsp(void* buf, int32_t bufLen, SQnodeListRsp* pRsp);
 void    tFreeSQnodeListRsp(SQnodeListRsp* pRsp);
 
-typedef struct SQueryNodeAddr {
-  int32_t nodeId;  // vgId or qnodeId
-  SEpSet  epSet;
-} SQueryNodeAddr;
-
 typedef struct {
   SArray* pArray;  // Array of SUseDbRsp
 } SUseDbBatchRsp;
@@ -926,6 +931,21 @@ typedef struct {
   int32_t syncState;
 } SMnodeLoad;
 
+typedef struct {
+  int32_t dnodeId;
+  int64_t numOfProcessedQuery;
+  int64_t numOfProcessedCQuery;
+  int64_t numOfProcessedFetch;
+  int64_t numOfProcessedDrop;
+  int64_t numOfProcessedHb;
+  int64_t cacheDataSize;
+  int64_t numOfQueryInQueue;
+  int64_t numOfFetchInQueue;
+  int64_t timeInQueryQueue;
+  int64_t timeInFetchQueue;
+} SQnodeLoad;
+
+
 typedef struct {
   int32_t     sver;      // software version
   int64_t     dnodeVer;  // dnode table version in sdb
@@ -937,6 +957,7 @@ typedef struct {
   int32_t     numOfSupportVnodes;
   char        dnodeEp[TSDB_EP_LEN];
   SMnodeLoad  mload;
+  SQnodeLoad  qload;
   SClusterCfg clusterCfg;
   SArray*     pVloads;  // array of SVnodeLoad
 } SStatusReq;
@@ -1937,6 +1958,7 @@ typedef struct {
   int8_t   killConnection;
   int8_t   align[3];
   SEpSet   epSet;
+  SArray  *pQnodeList;
 } SQueryHbRspBasic;
 
 typedef struct {
@@ -2016,7 +2038,10 @@ static FORCE_INLINE void tFreeClientKv(void* pKv) {
 
 static FORCE_INLINE void tFreeClientHbRsp(void* pRsp) {
   SClientHbRsp* rsp = (SClientHbRsp*)pRsp;
-  taosMemoryFreeClear(rsp->query);
+  if (rsp->query) {
+    taosArrayDestroy(rsp->query->pQnodeList);
+    taosMemoryFreeClear(rsp->query);
+  }
   if (rsp->info) taosArrayDestroyEx(rsp->info, tFreeClientKv);
 }
 
diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index 51a15c1489..7858bc2246 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -253,6 +253,7 @@ enum {
   TD_DEF_MSG_TYPE(TDMT_MON_BM_INFO, "monitor-binfo", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MON_VM_LOAD, "monitor-vload", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MON_MM_LOAD, "monitor-mload", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_MON_QM_LOAD, "monitor-qload", NULL, NULL)
   
 #if defined(TD_MSG_NUMBER_)
   TDMT_MAX
diff --git a/include/dnode/qnode/qnode.h b/include/dnode/qnode/qnode.h
index 90a9529395..7d342c4ba1 100644
--- a/include/dnode/qnode/qnode.h
+++ b/include/dnode/qnode/qnode.h
@@ -25,20 +25,6 @@ extern "C" {
 /* ------------------------ TYPES EXPOSED ------------------------ */
 typedef struct SQnode SQnode;
 
-typedef struct {
-  int64_t numOfProcessedQuery;
-  int64_t numOfProcessedCQuery;
-  int64_t numOfProcessedFetch;
-  int64_t numOfProcessedDrop;
-  int64_t memSizeInCache;
-  int64_t dataSizeSend;
-  int64_t dataSizeRecv;
-  int64_t numOfQueryInQueue;
-  int64_t numOfFetchInQueue;
-  int64_t waitTimeInQueryQUeue;
-  int64_t waitTimeInFetchQUeue;
-} SQnodeLoad;
-
 typedef struct {
   SMsgCb msgCb;
 } SQnodeOpt;
diff --git a/include/libs/executor/dataSinkMgt.h b/include/libs/executor/dataSinkMgt.h
index 339743f153..2cc9caca6f 100644
--- a/include/libs/executor/dataSinkMgt.h
+++ b/include/libs/executor/dataSinkMgt.h
@@ -32,6 +32,10 @@ extern "C" {
 struct SDataSink;
 struct SSDataBlock;
 
+typedef struct SDataSinkStat {
+  uint64_t cachedSize;
+} SDataSinkStat;
+
 typedef struct SDataSinkMgtCfg {
   uint32_t maxDataBlockNum;           // todo: this should be numOfRows?
   uint32_t maxDataBlockNumPerQuery;
@@ -62,6 +66,8 @@ typedef struct SOutputData {
  */
 int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHandle);
 
+int32_t dsDataSinkGetCacheSize(SDataSinkStat *pStat);
+
 /**
  * Put the result set returned by the executor into datasinker.
  * @param handle
@@ -88,6 +94,8 @@ void dsGetDataLength(DataSinkHandle handle, int32_t* pLen, bool* pQueryEnd);
  */
 int32_t dsGetDataBlock(DataSinkHandle handle, SOutputData* pOutput);
 
+int32_t dsGetCacheSize(DataSinkHandle handle, uint64_t *pSize);
+
 /**
  * After dsGetStatus returns DS_NEED_SCHEDULE, the caller need to put this into the work queue.
  * @param ahandle
diff --git a/include/libs/monitor/monitor.h b/include/libs/monitor/monitor.h
index 9d8cf61b06..39e8042b93 100644
--- a/include/libs/monitor/monitor.h
+++ b/include/libs/monitor/monitor.h
@@ -171,6 +171,7 @@ void    tFreeSMonVmInfo(SMonVmInfo *pInfo);
 typedef struct {
   SMonSysInfo sys;
   SMonLogs    log;
+  SQnodeLoad  load;
 } SMonQmInfo;
 
 int32_t tSerializeSMonQmInfo(void *buf, int32_t bufLen, SMonQmInfo *pInfo);
@@ -210,6 +211,10 @@ typedef struct {
 int32_t tSerializeSMonMloadInfo(void *buf, int32_t bufLen, SMonMloadInfo *pInfo);
 int32_t tDeserializeSMonMloadInfo(void *buf, int32_t bufLen, SMonMloadInfo *pInfo);
 
+int32_t tSerializeSQnodeLoad(void *buf, int32_t bufLen, SQnodeLoad *pInfo);
+int32_t tDeserializeSQnodeLoad(void *buf, int32_t bufLen, SQnodeLoad *pInfo);
+
+
 typedef struct {
   const char *server;
   uint16_t    port;
diff --git a/include/libs/qworker/qworker.h b/include/libs/qworker/qworker.h
index 5942d00cb2..91cf975a56 100644
--- a/include/libs/qworker/qworker.h
+++ b/include/libs/qworker/qworker.h
@@ -22,7 +22,7 @@ extern "C" {
 
 #include "tmsgcb.h"
 #include "trpc.h"
-
+#include "executor.h"
 
 enum {
   NODE_TYPE_VNODE = 1,
@@ -40,13 +40,19 @@ typedef struct SQWorkerCfg {
 } SQWorkerCfg;
 
 typedef struct {
-  uint64_t numOfStartTask;
-  uint64_t numOfStopTask;
-  uint64_t numOfRecvedFetch;
-  uint64_t numOfSentHb;
-  uint64_t numOfSentFetch;
-  uint64_t numOfTaskInQueue;
+  uint64_t cacheDataSize;
+  
+  uint64_t queryProcessed;
+  uint64_t cqueryProcessed;
+  uint64_t fetchProcessed;
+  uint64_t dropProcessed;
+  uint64_t hbProcessed;
+  
+  uint64_t numOfQueryInQueue;
   uint64_t numOfFetchInQueue;
+  uint64_t timeInQueryQueue;
+  uint64_t timeInFetchQueue;
+  
   uint64_t numOfErrors;
 } SQWorkerStat;
 
@@ -68,7 +74,7 @@ int32_t qWorkerProcessHbMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int64_
 
 void qWorkerDestroy(void **qWorkerMgmt);
 
-int64_t qWorkerGetWaitTimeInQueue(void *qWorkerMgmt, EQueueType type);
+int32_t qWorkerGetStat(SReadHandle *handle, void *qWorkerMgmt, SQWorkerStat *pStat);
 
 #ifdef __cplusplus
 }
diff --git a/source/client/inc/clientInt.h b/source/client/inc/clientInt.h
index d9f3351008..c5fa377fea 100644
--- a/source/client/inc/clientInt.h
+++ b/source/client/inc/clientInt.h
@@ -119,6 +119,8 @@ typedef struct SHeartBeatInfo {
 struct SAppInstInfo {
   int64_t          numOfConns;
   SCorEpSet        mgmtEp;
+  TdThreadMutex    qnodeMutex;
+  SArray*          pQnodeList;
   SInstanceSummary summary;
   SList*           pConnList;  // STscObj linked list
   uint64_t         clusterId;
@@ -290,7 +292,7 @@ SRequestObj* launchQuery(STscObj* pTscObj, const char* sql, int sqlLen);
 
 int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery, SStmtCallback* pStmtCb);
 
-int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray* pNodeList);
+int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray** pNodeList);
 
 int32_t buildRequest(STscObj* pTscObj, const char* sql, int sqlLen, SRequestObj** pRequest);
 
@@ -317,6 +319,7 @@ SRequestObj* launchQueryImpl(SRequestObj* pRequest, SQuery* pQuery, int32_t code
 int32_t      getQueryPlan(SRequestObj* pRequest, SQuery* pQuery, SArray** pNodeList);
 int32_t      scheduleQuery(SRequestObj* pRequest, SQueryPlan* pDag, SArray* pNodeList, void** res);
 int32_t      refreshMeta(STscObj* pTscObj, SRequestObj* pRequest);
+int32_t updateQnodeList(SAppInstInfo*pInfo, SArray* pNodeList);
 
 #ifdef __cplusplus
 }
diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index a9c5cd06f6..70b60195d2 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -160,6 +160,10 @@ static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
         taos_close(pTscObj);
       }
 
+      if (pRsp->query->pQnodeList) {
+        updateQnodeList(pTscObj->pAppInfo, pRsp->query->pQnodeList);
+      }
+
       releaseTscObj(pRsp->connKey.tscRid);
     }
   }
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index eb4c4cb59f..53ee592945 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -117,7 +117,8 @@ TAOS* taos_connect_internal(const char* ip, const char* user, const char* pass,
   SAppInstInfo* p = NULL;
   if (pInst == NULL) {
     p = taosMemoryCalloc(1, sizeof(struct SAppInstInfo));
-    p->mgmtEp = epSet;
+    p->mgmtEp = epSet;    
+    taosThreadMutexInit(&p->qnodeMutex, NULL);
     p->pTransporter = openTransporter(user, secretEncrypt, tsNumOfCores);
     p->pAppHbMgr = appHbMgrInit(p, key);
     taosHashPut(appInfo.pInstMap, key, strlen(key), &p, POINTER_BYTES);
@@ -228,7 +229,61 @@ int32_t execDdlQuery(SRequestObj* pRequest, SQuery* pQuery) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray* pNodeList) {
+int compareQueryNodeLoad(const void* elem1, const void* elem2) {
+  SQueryNodeLoad *node1 = (SQueryNodeLoad *)elem1;
+  SQueryNodeLoad *node2 = (SQueryNodeLoad *)elem2;
+
+  if (node1->load < node2->load) {
+    return -1;
+  }
+  
+  return node1->load > node2->load;
+}
+
+int32_t updateQnodeList(SAppInstInfo*pInfo, SArray* pNodeList) {
+  taosThreadMutexLock(&pInfo->qnodeMutex);
+  if (pInfo->pQnodeList) {
+    taosArrayDestroy(pInfo->pQnodeList);
+    pInfo->pQnodeList = NULL;
+  }
+  
+  if (pNodeList) {
+    pInfo->pQnodeList = taosArrayDup(pNodeList);
+    taosArraySort(pInfo->pQnodeList, compareQueryNodeLoad);
+  }
+  taosThreadMutexUnlock(&pInfo->qnodeMutex);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t getQnodeList(SRequestObj* pRequest, SArray** pNodeList) {
+  SAppInstInfo*pInfo = pRequest->pTscObj->pAppInfo;
+  int32_t code = 0;
+  
+  taosThreadMutexLock(&pInfo->qnodeMutex);
+  if (pInfo->pQnodeList) {
+    *pNodeList = taosArrayDup(pInfo->pQnodeList);
+  }
+  taosThreadMutexUnlock(&pInfo->qnodeMutex);
+
+  if (NULL == *pNodeList) {
+    SEpSet       mgmtEpSet = getEpSet_s(&pRequest->pTscObj->pAppInfo->mgmtEp);
+    SCatalog*    pCatalog = NULL;
+    code = catalogGetHandle(pRequest->pTscObj->pAppInfo->clusterId, &pCatalog);
+    if (TSDB_CODE_SUCCESS == code) {
+      *pNodeList = taosArrayInit(5, sizeof(SQueryNodeLoad));
+      code = catalogGetQnodeList(pCatalog, pRequest->pTscObj->pAppInfo->pTransporter, &mgmtEpSet, *pNodeList);
+    }
+    
+    if (TSDB_CODE_SUCCESS == code && *pNodeList) {
+      code = updateQnodeList(pInfo, *pNodeList);
+    }
+  }
+
+  return code;
+}
+
+int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray** pNodeList) {
   pRequest->type = pQuery->msgType;
   SPlanContext cxt = {.queryId = pRequest->requestId,
                       .acctId = pRequest->pTscObj->acctId,
@@ -237,14 +292,10 @@ int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArra
                       .showRewrite = pQuery->showRewrite,
                       .pMsg = pRequest->msgBuf,
                       .msgLen = ERROR_MSG_BUF_DEFAULT_SIZE};
-  SEpSet       mgmtEpSet = getEpSet_s(&pRequest->pTscObj->pAppInfo->mgmtEp);
-  SCatalog*    pCatalog = NULL;
-  int32_t      code = catalogGetHandle(pRequest->pTscObj->pAppInfo->clusterId, &pCatalog);
-  if (TSDB_CODE_SUCCESS == code) {
-    code = catalogGetQnodeList(pCatalog, pRequest->pTscObj->pAppInfo->pTransporter, &mgmtEpSet, pNodeList);
-  }
+
+  int32_t code = getQnodeList(pRequest, pNodeList);
   if (TSDB_CODE_SUCCESS == code) {
-    code = qCreateQueryPlan(&cxt, pPlan, pNodeList);
+    code = qCreateQueryPlan(&cxt, pPlan, *pNodeList);
   }
   return code;
 }
@@ -369,8 +420,7 @@ int32_t scheduleQuery(SRequestObj* pRequest, SQueryPlan* pDag, SArray* pNodeList
 }
 
 int32_t getQueryPlan(SRequestObj* pRequest, SQuery* pQuery, SArray** pNodeList) {
-  *pNodeList = taosArrayInit(4, sizeof(struct SQueryNodeAddr));
-  return getPlan(pRequest, pQuery, &pRequest->body.pDag, *pNodeList);
+  return getPlan(pRequest, pQuery, &pRequest->body.pDag, pNodeList);
 }
 
 int32_t validateSversion(SRequestObj* pRequest, void* res) {
@@ -456,8 +506,8 @@ SRequestObj* launchQueryImpl(SRequestObj* pRequest, SQuery* pQuery, int32_t code
         code = execDdlQuery(pRequest, pQuery);
         break;
       case QUERY_EXEC_MODE_SCHEDULE: {
-        SArray* pNodeList = taosArrayInit(4, sizeof(struct SQueryNodeAddr));
-        code = getPlan(pRequest, pQuery, &pRequest->body.pDag, pNodeList);
+        SArray* pNodeList = NULL;
+        code = getPlan(pRequest, pQuery, &pRequest->body.pDag, &pNodeList);
         if (TSDB_CODE_SUCCESS == code) {
           code = scheduleQuery(pRequest, pRequest->body.pDag, pNodeList, &pRes);
           if (NULL != pRes) {
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 7615f7b070..6bed28cb89 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -147,12 +147,25 @@ int32_t tEncodeSQueryNodeAddr(SEncoder *pEncoder, SQueryNodeAddr *pAddr) {
   return 0;
 }
 
+int32_t tEncodeSQueryNodeLoad(SEncoder *pEncoder, SQueryNodeLoad *pLoad) {
+  if (tEncodeSQueryNodeAddr(pEncoder, &pLoad->addr) < 0) return -1;
+  if (tEncodeU64(pEncoder, pLoad->load) < 0) return -1;
+  return 0;
+}
+
 int32_t tDecodeSQueryNodeAddr(SDecoder *pDecoder, SQueryNodeAddr *pAddr) {
   if (tDecodeI32(pDecoder, &pAddr->nodeId) < 0) return -1;
   if (tDecodeSEpSet(pDecoder, &pAddr->epSet) < 0) return -1;
   return 0;
 }
 
+int32_t tDecodeSQueryNodeLoad(SDecoder *pDecoder, SQueryNodeLoad *pLoad) {
+  if (tDecodeSQueryNodeAddr(pDecoder, &pLoad->addr) < 0) return -1;
+  if (tDecodeU64(pDecoder, &pLoad->load) < 0) return -1;
+  return 0;
+}
+
+
 int32_t taosEncodeSEpSet(void **buf, const SEpSet *pEp) {
   int32_t tlen = 0;
   tlen += taosEncodeFixedI8(buf, pEp->inUse);
@@ -304,6 +317,12 @@ static int32_t tSerializeSClientHbRsp(SEncoder *pEncoder, const SClientHbRsp *pR
     if (tEncodeI32(pEncoder, pRsp->query->onlineDnodes) < 0) return -1;
     if (tEncodeI8(pEncoder, pRsp->query->killConnection) < 0) return -1;
     if (tEncodeSEpSet(pEncoder, &pRsp->query->epSet) < 0) return -1;
+    int32_t num = taosArrayGetSize(pRsp->query->pQnodeList);
+    if (tEncodeI32(pEncoder, num) < 0) return -1;
+    for (int32_t i = 0; i < num; ++i) {
+      SQueryNodeLoad *pLoad = taosArrayGet(pRsp->query->pQnodeList, i);
+      if (tEncodeSQueryNodeLoad(pEncoder, pLoad) < 0) return -1;
+    }
   } else {
     if (tEncodeI32(pEncoder, queryNum) < 0) return -1;
   }
@@ -333,6 +352,15 @@ static int32_t tDeserializeSClientHbRsp(SDecoder *pDecoder, SClientHbRsp *pRsp)
     if (tDecodeI32(pDecoder, &pRsp->query->onlineDnodes) < 0) return -1;
     if (tDecodeI8(pDecoder, &pRsp->query->killConnection) < 0) return -1;
     if (tDecodeSEpSet(pDecoder, &pRsp->query->epSet) < 0) return -1;
+    int32_t pQnodeNum = 0;
+    if (tDecodeI32(pDecoder, &pQnodeNum) < 0) return -1;
+    if (pQnodeNum > 0) {
+      pRsp->query->pQnodeList = taosArrayInit(pQnodeNum, sizeof(SQueryNodeLoad));
+      if (NULL == pRsp->query->pQnodeList) return -1;
+      SQueryNodeLoad load = {0};
+      if (tDecodeSQueryNodeLoad(pDecoder, &load) < 0) return -1;
+      taosArrayPush(pRsp->query->pQnodeList, &load);
+    }
   }
 
   int32_t kvNum = 0;
@@ -898,6 +926,18 @@ int32_t tSerializeSStatusReq(void *buf, int32_t bufLen, SStatusReq *pReq) {
   // mnode loads
   if (tEncodeI32(&encoder, pReq->mload.syncState) < 0) return -1;
 
+  if (tEncodeI32(&encoder, pReq->qload.dnodeId) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfProcessedQuery) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfProcessedCQuery) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfProcessedFetch) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfProcessedDrop) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfProcessedHb) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.cacheDataSize) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfQueryInQueue) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.numOfFetchInQueue) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.timeInQueryQueue) < 0) return -1;
+  if (tEncodeI64(&encoder, pReq->qload.timeInFetchQueue) < 0) return -1;
+
   tEndEncode(&encoder);
 
   int32_t tlen = encoder.pos;
@@ -955,6 +995,18 @@ int32_t tDeserializeSStatusReq(void *buf, int32_t bufLen, SStatusReq *pReq) {
 
   if (tDecodeI32(&decoder, &pReq->mload.syncState) < 0) return -1;
 
+  if (tDecodeI32(&decoder, &pReq->qload.dnodeId) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfProcessedQuery) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfProcessedCQuery) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfProcessedFetch) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfProcessedDrop) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfProcessedHb) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.cacheDataSize) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfQueryInQueue) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.numOfFetchInQueue) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.timeInQueryQueue) < 0) return -1;
+  if (tDecodeI64(&decoder, &pReq->qload.timeInFetchQueue) < 0) return -1;
+
   tEndDecode(&decoder);
   tDecoderClear(&decoder);
   return 0;
@@ -1921,11 +1973,11 @@ int32_t tSerializeSQnodeListRsp(void *buf, int32_t bufLen, SQnodeListRsp *pRsp)
   tEncoderInit(&encoder, buf, bufLen);
 
   if (tStartEncode(&encoder) < 0) return -1;
-  int32_t num = taosArrayGetSize(pRsp->addrsList);
+  int32_t num = taosArrayGetSize(pRsp->qnodeList);
   if (tEncodeI32(&encoder, num) < 0) return -1;
   for (int32_t i = 0; i < num; ++i) {
-    SQueryNodeAddr *addr = taosArrayGet(pRsp->addrsList, i);
-    if (tEncodeSQueryNodeAddr(&encoder, addr) < 0) return -1;
+    SQueryNodeLoad *pLoad = taosArrayGet(pRsp->qnodeList, i);
+    if (tEncodeSQueryNodeLoad(&encoder, pLoad) < 0) return -1;
   }
   tEndEncode(&encoder);
 
@@ -1941,15 +1993,15 @@ int32_t tDeserializeSQnodeListRsp(void *buf, int32_t bufLen, SQnodeListRsp *pRsp
   if (tStartDecode(&decoder) < 0) return -1;
   int32_t num = 0;
   if (tDecodeI32(&decoder, &num) < 0) return -1;
-  if (NULL == pRsp->addrsList) {
-    pRsp->addrsList = taosArrayInit(num, sizeof(SQueryNodeAddr));
-    if (NULL == pRsp->addrsList) return -1;
+  if (NULL == pRsp->qnodeList) {
+    pRsp->qnodeList = taosArrayInit(num, sizeof(SQueryNodeLoad));
+    if (NULL == pRsp->qnodeList) return -1;
   }
 
   for (int32_t i = 0; i < num; ++i) {
-    SQueryNodeAddr addr = {0};
-    if (tDecodeSQueryNodeAddr(&decoder, &addr) < 0) return -1;
-    taosArrayPush(pRsp->addrsList, &addr);
+    SQueryNodeLoad load = {0};
+    if (tDecodeSQueryNodeLoad(&decoder, &load) < 0) return -1;
+    taosArrayPush(pRsp->qnodeList, &load);
   }
   tEndDecode(&decoder);
 
@@ -1957,7 +2009,7 @@ int32_t tDeserializeSQnodeListRsp(void *buf, int32_t bufLen, SQnodeListRsp *pRsp
   return 0;
 }
 
-void tFreeSQnodeListRsp(SQnodeListRsp *pRsp) { taosArrayDestroy(pRsp->addrsList); }
+void tFreeSQnodeListRsp(SQnodeListRsp *pRsp) { taosArrayDestroy(pRsp->qnodeList); }
 
 int32_t tSerializeSCompactDbReq(void *buf, int32_t bufLen, SCompactDbReq *pReq) {
   SEncoder encoder = {0};
diff --git a/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h b/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h
index ae8879326d..ee811c0071 100644
--- a/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h
+++ b/source/dnode/mgmt/mgmt_dnode/inc/dmInt.h
@@ -35,6 +35,7 @@ typedef struct SDnodeMgmt {
   SendMonitorReportFp sendMonitorReportFp;
   GetVnodeLoadsFp     getVnodeLoadsFp;
   GetMnodeLoadsFp     getMnodeLoadsFp;
+  GetQnodeLoadsFp     getQnodeLoadsFp;
 } SDnodeMgmt;
 
 // dmHandle.c
@@ -58,4 +59,4 @@ void    dmStopWorker(SDnodeMgmt *pMgmt);
 }
 #endif
 
-#endif /*_TD_DND_QNODE_INT_H_*/
\ No newline at end of file
+#endif /*_TD_DND_QNODE_INT_H_*/
diff --git a/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c b/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c
index 2533f268e5..fbd46db183 100644
--- a/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c
+++ b/source/dnode/mgmt/mgmt_dnode/src/dmHandle.c
@@ -79,6 +79,8 @@ void dmSendStatusReq(SDnodeMgmt *pMgmt) {
   (*pMgmt->getMnodeLoadsFp)(&minfo);
   req.mload = minfo.load;
 
+  (*pMgmt->getQnodeLoadsFp)(&req.qload);
+
   int32_t contLen = tSerializeSStatusReq(NULL, 0, &req);
   void   *pHead = rpcMallocCont(contLen);
   tSerializeSStatusReq(pHead, contLen, &req);
diff --git a/source/dnode/mgmt/mgmt_dnode/src/dmInt.c b/source/dnode/mgmt/mgmt_dnode/src/dmInt.c
index 59c926545e..d2db1a4a62 100644
--- a/source/dnode/mgmt/mgmt_dnode/src/dmInt.c
+++ b/source/dnode/mgmt/mgmt_dnode/src/dmInt.c
@@ -48,6 +48,7 @@ static int32_t dmOpenMgmt(SMgmtInputOpt *pInput, SMgmtOutputOpt *pOutput) {
   pMgmt->sendMonitorReportFp = pInput->sendMonitorReportFp;
   pMgmt->getVnodeLoadsFp = pInput->getVnodeLoadsFp;
   pMgmt->getMnodeLoadsFp = pInput->getMnodeLoadsFp;
+  pMgmt->getQnodeLoadsFp = pInput->getQnodeLoadsFp;
 
   if (dmStartWorker(pMgmt) != 0) {
     return -1;
diff --git a/source/dnode/mgmt/mgmt_qnode/src/qmHandle.c b/source/dnode/mgmt/mgmt_qnode/src/qmHandle.c
index 65794b7b81..864f5b485a 100644
--- a/source/dnode/mgmt/mgmt_qnode/src/qmHandle.c
+++ b/source/dnode/mgmt/mgmt_qnode/src/qmHandle.c
@@ -20,6 +20,14 @@ void qmGetMonitorInfo(SQnodeMgmt *pMgmt, SMonQmInfo *qmInfo) {
   SQnodeLoad qload = {0};
   qndGetLoad(pMgmt->pQnode, &qload);
 
+  qload.dnodeId = pMgmt->pData->dnodeId;
+
+}
+
+void qmGetQnodeLoads(SQnodeMgmt *pMgmt, SQnodeLoad *pInfo) {
+  qndGetLoad(pMgmt->pQnode, pInfo);
+
+  pInfo->dnodeId = pMgmt->pData->dnodeId;
 }
 
 int32_t qmProcessGetMonitorInfoReq(SQnodeMgmt *pMgmt, SRpcMsg *pMsg) {
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
index 6183794bdd..a945358d34 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
@@ -104,7 +104,7 @@ static void vmProcessWriteQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numO
 
     dTrace("msg:%p, get from vnode-write queue", pMsg);
     if (taosArrayPush(pArray, &pMsg) == NULL) {
-      dTrace("msg:%p, failed to process since %s", pMsg, terrstr());
+      dTrace("msg:%p, failed to push to array since %s", pMsg, terrstr());
       vmSendRsp(pMsg, TSDB_CODE_OUT_OF_MEMORY);
     }
   }
diff --git a/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h b/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
index 27f1140f23..adde055796 100644
--- a/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
+++ b/source/dnode/mgmt/node_mgmt/inc/dmMgmt.h
@@ -168,6 +168,7 @@ int32_t dmProcessNodeMsg(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 void dmSendMonitorReport();
 void dmGetVnodeLoads(SMonVloadInfo *pInfo);
 void dmGetMnodeLoads(SMonMloadInfo *pInfo);
+void dmGetQnodeLoads(SQnodeLoad *pInfo);
 
 #ifdef __cplusplus
 }
diff --git a/source/dnode/mgmt/node_mgmt/inc/dmNodes.h b/source/dnode/mgmt/node_mgmt/inc/dmNodes.h
index 3ac71de530..8c2d57808f 100644
--- a/source/dnode/mgmt/node_mgmt/inc/dmNodes.h
+++ b/source/dnode/mgmt/node_mgmt/inc/dmNodes.h
@@ -37,6 +37,7 @@ void bmGetMonitorInfo(void *pMgmt, SMonBmInfo *pInfo);
 
 void vmGetVnodeLoads(void *pMgmt, SMonVloadInfo *pInfo);
 void mmGetMnodeLoads(void *pMgmt, SMonMloadInfo *pInfo);
+void qmGetQnodeLoads(void *pMgmt, SQnodeLoad *pInfo);
 
 #ifdef __cplusplus
 }
diff --git a/source/dnode/mgmt/node_mgmt/src/dmEnv.c b/source/dnode/mgmt/node_mgmt/src/dmEnv.c
index 07d0c43360..5f1bf30523 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmEnv.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmEnv.c
@@ -178,6 +178,7 @@ SMgmtInputOpt dmBuildMgmtInputOpt(SMgmtWrapper *pWrapper) {
       .sendMonitorReportFp = dmSendMonitorReport,
       .getVnodeLoadsFp = dmGetVnodeLoads,
       .getMnodeLoadsFp = dmGetMnodeLoads,
+      .getQnodeLoadsFp = dmGetQnodeLoads,
   };
 
   opt.msgCb = dmGetMsgcb(pWrapper->pDnode);
diff --git a/source/dnode/mgmt/node_mgmt/src/dmMonitor.c b/source/dnode/mgmt/node_mgmt/src/dmMonitor.c
index 0b74d865fd..ecad390ef9 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmMonitor.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmMonitor.c
@@ -170,3 +170,17 @@ void dmGetMnodeLoads(SMonMloadInfo *pInfo) {
     dmReleaseWrapper(pWrapper);
   }
 }
+
+void dmGetQnodeLoads(SQnodeLoad *pInfo) {
+  SDnode       *pDnode = dmInstance();
+  SMgmtWrapper *pWrapper = &pDnode->wrappers[QNODE];
+  if (dmMarkWrapper(pWrapper) == 0) {
+    if (tsMultiProcess) {
+      dmSendLocalRecv(pDnode, TDMT_MON_QM_LOAD, tDeserializeSQnodeLoad, pInfo);
+    } else if (pWrapper->pMgmt != NULL) {
+      qmGetQnodeLoads(pWrapper->pMgmt, pInfo);
+    }
+    dmReleaseWrapper(pWrapper);
+  }
+}
+
diff --git a/source/dnode/mgmt/node_mgmt/src/dmTransport.c b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
index 987fc54416..02b38ed85b 100644
--- a/source/dnode/mgmt/node_mgmt/src/dmTransport.c
+++ b/source/dnode/mgmt/node_mgmt/src/dmTransport.c
@@ -130,7 +130,7 @@ static void dmProcessRpcMsg(SDnode *pDnode, SRpcMsg *pRpc, SEpSet *pEpSet) {
 
 _OVER:
   if (code != 0) {
-    dError("msg:%p, failed to process since %s", pMsg, terrstr());
+    dError("msg:%s, failed to process since %s", TMSG_INFO(pRpc->msgType), terrstr());
     if (terrno != 0) code = terrno;
 
     if (IsReq(pRpc)) {
diff --git a/source/dnode/mgmt/node_util/inc/dmUtil.h b/source/dnode/mgmt/node_util/inc/dmUtil.h
index 0d921c2e8b..c142a6cfd8 100644
--- a/source/dnode/mgmt/node_util/inc/dmUtil.h
+++ b/source/dnode/mgmt/node_util/inc/dmUtil.h
@@ -34,6 +34,7 @@
 
 #include "dnode.h"
 #include "mnode.h"
+#include "qnode.h"
 #include "monitor.h"
 #include "sync.h"
 #include "wal.h"
@@ -92,6 +93,7 @@ typedef int32_t (*ProcessDropNodeFp)(EDndNodeType ntype, SRpcMsg *pMsg);
 typedef void (*SendMonitorReportFp)();
 typedef void (*GetVnodeLoadsFp)(SMonVloadInfo *pInfo);
 typedef void (*GetMnodeLoadsFp)(SMonMloadInfo *pInfo);
+typedef void (*GetQnodeLoadsFp)(SQnodeLoad *pInfo);
 
 typedef struct {
   int32_t        dnodeId;
@@ -118,6 +120,7 @@ typedef struct {
   SendMonitorReportFp sendMonitorReportFp;
   GetVnodeLoadsFp     getVnodeLoadsFp;
   GetMnodeLoadsFp     getMnodeLoadsFp;
+  GetQnodeLoadsFp     getQnodeLoadsFp;
 } SMgmtInputOpt;
 
 typedef struct {
@@ -180,4 +183,4 @@ void    dmSetMnodeEpSet(SDnodeData *pData, SEpSet *pEpSet);
 }
 #endif
 
-#endif /*_TD_DM_INT_H_*/
\ No newline at end of file
+#endif /*_TD_DM_INT_H_*/
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index 9e036d7b25..f3af135e6d 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -216,6 +216,7 @@ typedef struct {
   int64_t    createdTime;
   int64_t    updateTime;
   SDnodeObj* pDnode;
+  SQnodeLoad load;  
 } SQnodeObj;
 
 typedef struct {
diff --git a/source/dnode/mnode/impl/inc/mndQnode.h b/source/dnode/mnode/impl/inc/mndQnode.h
index 5d177b3f6d..3e38565a4f 100644
--- a/source/dnode/mnode/impl/inc/mndQnode.h
+++ b/source/dnode/mnode/impl/inc/mndQnode.h
@@ -22,9 +22,15 @@
 extern "C" {
 #endif
 
+#define QNODE_LOAD_VALUE(pQnode) (pQnode ? (pQnode->load.numOfQueryInQueue + pQnode->load.numOfFetchInQueue) : 0)
+
 int32_t mndInitQnode(SMnode *pMnode);
 void    mndCleanupQnode(SMnode *pMnode);
 
+SQnodeObj *mndAcquireQnode(SMnode *pMnode, int32_t qnodeId);
+void mndReleaseQnode(SMnode *pMnode, SQnodeObj *pObj);
+int32_t mndCreateQnodeList(SMnode       *pMnode, SArray** pList, int32_t limit);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/mnode/impl/src/mndDnode.c b/source/dnode/mnode/impl/src/mndDnode.c
index 22f858c60b..047aac37a5 100644
--- a/source/dnode/mnode/impl/src/mndDnode.c
+++ b/source/dnode/mnode/impl/src/mndDnode.c
@@ -17,6 +17,7 @@
 #include "mndDnode.h"
 #include "mndAuth.h"
 #include "mndMnode.h"
+#include "mndQnode.h"
 #include "mndShow.h"
 #include "mndTrans.h"
 #include "mndUser.h"
@@ -388,6 +389,12 @@ static int32_t mndProcessStatusReq(SRpcMsg *pReq) {
     mndReleaseMnode(pMnode, pObj);
   }
 
+  SQnodeObj *pQnode = mndAcquireQnode(pMnode, statusReq.qload.dnodeId);
+  if (pQnode != NULL) {
+    pQnode->load = statusReq.qload;
+    mndReleaseQnode(pMnode, pQnode);
+  }
+
   int64_t curMs = taosGetTimestampMs();
   bool    online = mndIsDnodeOnline(pMnode, pDnode, curMs);
   bool    dnodeChanged = (statusReq.dnodeVer != sdbGetTableVer(pMnode->pSdb, SDB_DNODE));
diff --git a/source/dnode/mnode/impl/src/mndProfile.c b/source/dnode/mnode/impl/src/mndProfile.c
index c9c52af0fe..bacdf2f366 100644
--- a/source/dnode/mnode/impl/src/mndProfile.c
+++ b/source/dnode/mnode/impl/src/mndProfile.c
@@ -18,6 +18,7 @@
 #include "mndDb.h"
 #include "mndDnode.h"
 #include "mndMnode.h"
+#include "mndQnode.h"
 #include "mndShow.h"
 #include "mndStb.h"
 #include "mndUser.h"
@@ -382,6 +383,9 @@ static int32_t mndProcessQueryHeartBeat(SMnode *pMnode, SRpcMsg *pMsg, SClientHb
     rspBasic->totalDnodes = mndGetDnodeSize(pMnode);
     rspBasic->onlineDnodes = 1;  // TODO
     mndGetMnodeEpSet(pMnode, &rspBasic->epSet);
+
+    mndCreateQnodeList(pMnode, &rspBasic->pQnodeList, -1);
+    
     mndReleaseConn(pMnode, pConn);
 
     hbRsp.query = rspBasic;
diff --git a/source/dnode/mnode/impl/src/mndQnode.c b/source/dnode/mnode/impl/src/mndQnode.c
index 3dc6200229..7c7bdc2e3a 100644
--- a/source/dnode/mnode/impl/src/mndQnode.c
+++ b/source/dnode/mnode/impl/src/mndQnode.c
@@ -60,7 +60,7 @@ int32_t mndInitQnode(SMnode *pMnode) {
 
 void mndCleanupQnode(SMnode *pMnode) {}
 
-static SQnodeObj *mndAcquireQnode(SMnode *pMnode, int32_t qnodeId) {
+SQnodeObj *mndAcquireQnode(SMnode *pMnode, int32_t qnodeId) {
   SQnodeObj *pObj = sdbAcquire(pMnode->pSdb, SDB_QNODE, &qnodeId);
   if (pObj == NULL && terrno == TSDB_CODE_SDB_OBJ_NOT_THERE) {
     terrno = TSDB_CODE_MND_QNODE_NOT_EXIST;
@@ -68,7 +68,7 @@ static SQnodeObj *mndAcquireQnode(SMnode *pMnode, int32_t qnodeId) {
   return pObj;
 }
 
-static void mndReleaseQnode(SMnode *pMnode, SQnodeObj *pObj) {
+void mndReleaseQnode(SMnode *pMnode, SQnodeObj *pObj) {
   SSdb *pSdb = pMnode->pSdb;
   sdbRelease(pSdb, pObj);
 }
@@ -429,49 +429,62 @@ _OVER:
   return code;
 }
 
-static int32_t mndProcessQnodeListReq(SRpcMsg *pReq) {
-  int32_t       code = -1;
-  int32_t       numOfRows = 0;
-  SMnode       *pMnode = pReq->info.node;
-  SSdb         *pSdb = pMnode->pSdb;
+int32_t mndCreateQnodeList(SMnode       *pMnode, SArray** pList, int32_t limit) {
+  SSdb *pSdb = pMnode->pSdb;
+  void *pIter = NULL;
   SQnodeObj    *pObj = NULL;
-  SQnodeListReq qlistReq = {0};
-  SQnodeListRsp qlistRsp = {0};
-
-  if (tDeserializeSQnodeListReq(pReq->pCont, pReq->contLen, &qlistReq) != 0) {
-    mError("failed to parse qnode list req");
-    terrno = TSDB_CODE_INVALID_MSG;
-    goto _OVER;
-  }
+  int32_t       numOfRows = 0;
 
-  qlistRsp.addrsList = taosArrayInit(5, sizeof(SQueryNodeAddr));
-  if (NULL == qlistRsp.addrsList) {
+  SArray* qnodeList = taosArrayInit(5, sizeof(SQueryNodeLoad));
+  if (NULL == qnodeList) {
     mError("failed to alloc epSet while process qnode list req");
     terrno = TSDB_CODE_OUT_OF_MEMORY;
-    goto _OVER;
+    return terrno;
   }
-
-  void *pIter = NULL;
+  
   while (1) {
     pIter = sdbFetch(pSdb, SDB_QNODE, pIter, (void **)&pObj);
     if (pIter == NULL) break;
 
-    SQueryNodeAddr nodeAddr = {0};
-    nodeAddr.nodeId = QNODE_HANDLE;
-    nodeAddr.epSet.numOfEps = 1;
-    tstrncpy(nodeAddr.epSet.eps[0].fqdn, pObj->pDnode->fqdn, TSDB_FQDN_LEN);
-    nodeAddr.epSet.eps[0].port = pObj->pDnode->port;
+    SQueryNodeLoad nodeLoad = {0};
+    nodeLoad.addr.nodeId = QNODE_HANDLE;
+    nodeLoad.addr.epSet.numOfEps = 1;
+    tstrncpy(nodeLoad.addr.epSet.eps[0].fqdn, pObj->pDnode->fqdn, TSDB_FQDN_LEN);
+    nodeLoad.addr.epSet.eps[0].port = pObj->pDnode->port;
+    nodeLoad.load = QNODE_LOAD_VALUE(pObj);
 
-    (void)taosArrayPush(qlistRsp.addrsList, &nodeAddr);
+    (void)taosArrayPush(qnodeList, &nodeLoad);
 
     numOfRows++;
     sdbRelease(pSdb, pObj);
 
-    if (qlistReq.rowNum > 0 && numOfRows >= qlistReq.rowNum) {
+    if (limit > 0 && numOfRows >= limit) {
       break;
     }
   }
 
+  *pList = qnodeList;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+static int32_t mndProcessQnodeListReq(SRpcMsg *pReq) {
+  int32_t       code = -1;
+  SMnode       *pMnode = pReq->info.node;
+  SQnodeListReq qlistReq = {0};
+  SQnodeListRsp qlistRsp = {0};
+
+  if (tDeserializeSQnodeListReq(pReq->pCont, pReq->contLen, &qlistReq) != 0) {
+    mError("failed to parse qnode list req");
+    terrno = TSDB_CODE_INVALID_MSG;
+    goto _OVER;
+  }
+
+  if (mndCreateQnodeList(pMnode, &qlistRsp.qnodeList, qlistReq.rowNum) != 0) {
+    goto _OVER;
+  }
+
   int32_t rspLen = tSerializeSQnodeListRsp(NULL, 0, &qlistRsp);
   void   *pRsp = rpcMallocCont(rspLen);
   if (pRsp == NULL) {
diff --git a/source/dnode/qnode/src/qnode.c b/source/dnode/qnode/src/qnode.c
index 40aa572a56..438982ac6a 100644
--- a/source/dnode/qnode/src/qnode.c
+++ b/source/dnode/qnode/src/qnode.c
@@ -41,12 +41,24 @@ void qndClose(SQnode *pQnode) {
 }
 
 int32_t qndGetLoad(SQnode *pQnode, SQnodeLoad *pLoad) { 
-  SMsgCb* pCb = &pQnode->msgCb;
+  SReadHandle handle = {.pMsgCb = &pQnode->msgCb};
+  SQWorkerStat stat = {0};
+
+  int32_t code = qWorkerGetStat(&handle, pQnode->pQuery, &stat);
+  if (code) {
+    return code;
+  }
 
-  pLoad->numOfQueryInQueue = pCb->qsizeFp(pCb->mgmt, pQnode->qndId, QUERY_QUEUE);
-  pLoad->numOfFetchInQueue = pCb->qsizeFp(pCb->mgmt, pQnode->qndId, FETCH_QUEUE);
-  pLoad->waitTimeInQueryQUeue = qWorkerGetWaitTimeInQueue(pQnode->pQuery, QUERY_QUEUE);
-  pLoad->waitTimeInFetchQUeue = qWorkerGetWaitTimeInQueue(pQnode->pQuery, FETCH_QUEUE);
+  pLoad->numOfQueryInQueue = stat.numOfQueryInQueue;
+  pLoad->numOfFetchInQueue = stat.numOfFetchInQueue;
+  pLoad->timeInQueryQueue = stat.timeInQueryQueue;
+  pLoad->timeInFetchQueue = stat.timeInFetchQueue;
+  pLoad->cacheDataSize = stat.cacheDataSize;
+  pLoad->numOfProcessedQuery = stat.queryProcessed;
+  pLoad->numOfProcessedCQuery = stat.cqueryProcessed;
+  pLoad->numOfProcessedFetch = stat.fetchProcessed;
+  pLoad->numOfProcessedDrop = stat.dropProcessed;
+  pLoad->numOfProcessedHb = stat.hbProcessed;
   
   return 0; 
 }
diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index 230949ab7f..57f651ed69 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -342,16 +342,16 @@ typedef struct SCtgOperation {
   ctgOpFunc func;
 } SCtgOperation;
 
-#define CTG_QUEUE_ADD() atomic_add_fetch_64(&gCtgMgmt.queue.qRemainNum, 1)
-#define CTG_QUEUE_SUB() atomic_sub_fetch_64(&gCtgMgmt.queue.qRemainNum, 1)
+#define CTG_QUEUE_INC() atomic_add_fetch_64(&gCtgMgmt.queue.qRemainNum, 1)
+#define CTG_QUEUE_DEC() atomic_sub_fetch_64(&gCtgMgmt.queue.qRemainNum, 1)
 
-#define CTG_STAT_ADD(_item, _n) atomic_add_fetch_64(&(_item), _n)
-#define CTG_STAT_SUB(_item, _n) atomic_sub_fetch_64(&(_item), _n)
+#define CTG_STAT_INC(_item, _n) atomic_add_fetch_64(&(_item), _n)
+#define CTG_STAT_DEC(_item, _n) atomic_sub_fetch_64(&(_item), _n)
 #define CTG_STAT_GET(_item) atomic_load_64(&(_item))
 
-#define CTG_RUNTIME_STAT_ADD(item, n) (CTG_STAT_ADD(gCtgMgmt.stat.runtime.item, n))
-#define CTG_CACHE_STAT_ADD(item, n) (CTG_STAT_ADD(gCtgMgmt.stat.cache.item, n))
-#define CTG_CACHE_STAT_SUB(item, n) (CTG_STAT_SUB(gCtgMgmt.stat.cache.item, n))
+#define CTG_RT_STAT_INC(item, n) (CTG_STAT_INC(gCtgMgmt.stat.runtime.item, n))
+#define CTG_CACHE_STAT_INC(item, n) (CTG_STAT_INC(gCtgMgmt.stat.cache.item, n))
+#define CTG_CACHE_STAT_DEC(item, n) (CTG_STAT_DEC(gCtgMgmt.stat.cache.item, n))
 
 #define CTG_IS_META_NULL(type) ((type) == META_TYPE_NULL_TABLE)
 #define CTG_IS_META_CTABLE(type) ((type) == META_TYPE_CTABLE)
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index 6519440dad..a874764468 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -558,7 +558,7 @@ int32_t catalogGetHandle(uint64_t clusterId, SCatalog** catalogHandle) {
 
   *catalogHandle = clusterCtg;
 
-  CTG_CACHE_STAT_ADD(clusterNum, 1);
+  CTG_CACHE_STAT_INC(clusterNum, 1);
   
   return TSDB_CODE_SUCCESS;
 
@@ -579,7 +579,7 @@ void catalogFreeHandle(SCatalog* pCtg) {
     return;
   }
 
-  CTG_CACHE_STAT_SUB(clusterNum, 1);
+  CTG_CACHE_STAT_DEC(clusterNum, 1);
 
   uint64_t clusterId = pCtg->clusterId;
   
@@ -990,7 +990,7 @@ int32_t catalogGetAllMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps,
   }
 
   if (pReq->qNodeRequired) {
-    pRsp->pQnodeList = taosArrayInit(10, sizeof(SQueryNodeAddr));
+    pRsp->pQnodeList = taosArrayInit(10, sizeof(SQueryNodeLoad));
     CTG_ERR_JRET(ctgGetQnodeListFromMnode(CTG_PARAMS_LIST(), pRsp->pQnodeList, NULL));
   }
 
diff --git a/source/libs/catalog/src/ctgCache.c b/source/libs/catalog/src/ctgCache.c
index d1e2056bec..2fbb8b499d 100644
--- a/source/libs/catalog/src/ctgCache.c
+++ b/source/libs/catalog/src/ctgCache.c
@@ -178,7 +178,7 @@ int32_t ctgAcquireVgInfoFromCache(SCatalog* pCtg, const char *dbFName, SCtgDBCac
 
   *pCache = dbCache;
 
-  CTG_CACHE_STAT_ADD(vgHitNum, 1);
+  CTG_CACHE_STAT_INC(vgHitNum, 1);
 
   ctgDebug("Got db vgInfo from cache, dbFName:%s", dbFName);
   
@@ -192,7 +192,7 @@ _return:
 
   *pCache = NULL;
 
-  CTG_CACHE_STAT_ADD(vgMissNum, 1);
+  CTG_CACHE_STAT_INC(vgMissNum, 1);
   
   return TSDB_CODE_SUCCESS;
 }
@@ -279,7 +279,7 @@ int32_t ctgReadTbMetaFromCache(SCatalog* pCtg, SCtgTbMetaCtx* ctx, STableMeta**
     ctgReleaseDBCache(pCtg, dbCache);
     ctgDebug("Got meta from cache, type:%d, dbFName:%s, tbName:%s", tbMeta->tableType, dbFName, ctx->pName->tname);
 
-    CTG_CACHE_STAT_ADD(tblHitNum, 1);
+    CTG_CACHE_STAT_INC(tblHitNum, 1);
     return TSDB_CODE_SUCCESS;
   }
   
@@ -312,7 +312,7 @@ int32_t ctgReadTbMetaFromCache(SCatalog* pCtg, SCtgTbMetaCtx* ctx, STableMeta**
 
   ctgReleaseDBCache(pCtg, dbCache);
 
-  CTG_CACHE_STAT_ADD(tblHitNum, 1);
+  CTG_CACHE_STAT_INC(tblHitNum, 1);
 
   ctgDebug("Got tbmeta from cache, dbFName:%s, tbName:%s", dbFName, ctx->pName->tname);
   
@@ -323,7 +323,7 @@ _return:
   ctgReleaseDBCache(pCtg, dbCache);
   taosMemoryFreeClear(*pTableMeta);
 
-  CTG_CACHE_STAT_ADD(tblMissNum, 1);
+  CTG_CACHE_STAT_INC(tblMissNum, 1);
   
   CTG_RET(code);
 }
@@ -462,7 +462,7 @@ int32_t ctgChkAuthFromCache(SCatalog* pCtg, const char* user, const char* dbFNam
   *inCache = true;
 
   ctgDebug("Got user from cache, user:%s", user);
-  CTG_CACHE_STAT_ADD(userHitNum, 1);
+  CTG_CACHE_STAT_INC(userHitNum, 1);
   
   if (pUser->superUser) {
     *pass = true;
@@ -491,7 +491,7 @@ int32_t ctgChkAuthFromCache(SCatalog* pCtg, const char* user, const char* dbFNam
 _return:
 
   *inCache = false;
-  CTG_CACHE_STAT_ADD(userMissNum, 1);
+  CTG_CACHE_STAT_INC(userMissNum, 1);
   
   return TSDB_CODE_SUCCESS;
 }
@@ -521,7 +521,7 @@ void ctgDequeue(SCtgCacheOperation **op) {
   SCtgQNode *node = gCtgMgmt.queue.head->next;
   gCtgMgmt.queue.head = gCtgMgmt.queue.head->next;
 
-  CTG_QUEUE_SUB();
+  CTG_QUEUE_DEC();
   
   taosMemoryFreeClear(orig);
 
@@ -545,8 +545,8 @@ int32_t ctgEnqueue(SCatalog* pCtg, SCtgCacheOperation *operation) {
   gCtgMgmt.queue.tail = node;
   CTG_UNLOCK(CTG_WRITE, &gCtgMgmt.queue.qlock);
 
-  CTG_QUEUE_ADD();
-  CTG_RUNTIME_STAT_ADD(qNum, 1);
+  CTG_QUEUE_INC();
+  CTG_RT_STAT_INC(qNum, 1);
 
   tsem_post(&gCtgMgmt.queue.reqSem);
 
@@ -988,7 +988,7 @@ int32_t ctgAddNewDBCache(SCatalog *pCtg, const char *dbFName, uint64_t dbId) {
     CTG_ERR_JRET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
-  CTG_CACHE_STAT_ADD(dbNum, 1);
+  CTG_CACHE_STAT_INC(dbNum, 1);
  
   SDbVgVersion vgVersion = {.dbId = newDBCache.dbId, .vgVersion = -1};
   strncpy(vgVersion.dbFName, dbFName, sizeof(vgVersion.dbFName));
@@ -1048,7 +1048,7 @@ int32_t ctgRemoveDBFromCache(SCatalog* pCtg, SCtgDBCache *dbCache, const char* d
     CTG_ERR_RET(TSDB_CODE_CTG_DB_DROPPED);
   }
 
-  CTG_CACHE_STAT_SUB(dbNum, 1);
+  CTG_CACHE_STAT_DEC(dbNum, 1);
 
   ctgInfo("db removed from cache, dbFName:%s, dbId:%"PRIx64, dbFName, dbId);
   
@@ -1187,7 +1187,7 @@ int32_t ctgWriteTbMetaToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFNam
       if (taosHashRemove(tbCache->stbCache, &orig->suid, sizeof(orig->suid))) {
         ctgError("stb not exist in stbCache, dbFName:%s, stb:%s, suid:%"PRIx64, dbFName, tbName, orig->suid);
       } else {
-        CTG_CACHE_STAT_SUB(stblNum, 1);
+        CTG_CACHE_STAT_DEC(stblNum, 1);
       }
       CTG_UNLOCK(CTG_WRITE, &tbCache->stbLock);
 
@@ -1214,7 +1214,7 @@ int32_t ctgWriteTbMetaToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFNam
   }
 
   if (NULL == orig) {
-    CTG_CACHE_STAT_ADD(tblNum, 1);
+    CTG_CACHE_STAT_INC(tblNum, 1);
   }
 
   ctgDebug("tbmeta updated to cache, dbFName:%s, tbName:%s, tbType:%d", dbFName, tbName, meta->tableType);
@@ -1233,7 +1233,7 @@ int32_t ctgWriteTbMetaToCache(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFNam
     CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
 
-  CTG_CACHE_STAT_ADD(stblNum, 1);
+  CTG_CACHE_STAT_INC(stblNum, 1);
   
   CTG_UNLOCK(CTG_WRITE, &tbCache->stbLock);
 
@@ -1371,14 +1371,14 @@ int32_t ctgOpDropStbMeta(SCtgCacheOperation *operation) {
   if (taosHashRemove(dbCache->tbCache.stbCache, &msg->suid, sizeof(msg->suid))) {
     ctgDebug("stb not exist in stbCache, may be removed, dbFName:%s, stb:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
   } else {
-    CTG_CACHE_STAT_SUB(stblNum, 1);
+    CTG_CACHE_STAT_DEC(stblNum, 1);
   }
 
   CTG_LOCK(CTG_READ, &dbCache->tbCache.metaLock);
   if (taosHashRemove(dbCache->tbCache.metaCache, msg->stbName, strlen(msg->stbName))) {  
     ctgError("stb not exist in cache, dbFName:%s, stb:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
   } else {
-    CTG_CACHE_STAT_SUB(tblNum, 1);
+    CTG_CACHE_STAT_DEC(tblNum, 1);
   }
   CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
   
@@ -1419,7 +1419,7 @@ int32_t ctgOpDropTbMeta(SCtgCacheOperation *operation) {
     ctgError("stb not exist in cache, dbFName:%s, tbName:%s", msg->dbFName, msg->tbName);
     CTG_ERR_RET(TSDB_CODE_CTG_INTERNAL_ERROR);
   } else {
-    CTG_CACHE_STAT_SUB(tblNum, 1);
+    CTG_CACHE_STAT_DEC(tblNum, 1);
   }
   CTG_UNLOCK(CTG_READ, &dbCache->tbCache.metaLock);
 
@@ -1578,7 +1578,7 @@ void* ctgUpdateThreadFunc(void* param) {
       tsem_post(&gCtgMgmt.queue.rspSem);
     }
 
-    CTG_RUNTIME_STAT_ADD(qDoneNum, 1); 
+    CTG_RT_STAT_INC(qDoneNum, 1); 
 
     ctgdShowClusterCache(pCtg);
   }
diff --git a/source/libs/catalog/src/ctgRemote.c b/source/libs/catalog/src/ctgRemote.c
index 4def1fff4f..b16a082f75 100644
--- a/source/libs/catalog/src/ctgRemote.c
+++ b/source/libs/catalog/src/ctgRemote.c
@@ -275,7 +275,7 @@ int32_t ctgGetQnodeListFromMnode(CTG_PARAMS, SArray *out, SCtgTask* pTask) {
   }
 
   if (pTask) {
-    void* pOut = taosArrayInit(4, sizeof(struct SQueryNodeAddr));
+    void* pOut = taosArrayInit(4, sizeof(SQueryNodeLoad));
     if (NULL == pOut) {
       CTG_ERR_RET(TSDB_CODE_OUT_OF_MEMORY);
     }
diff --git a/source/libs/catalog/src/ctgUtil.c b/source/libs/catalog/src/ctgUtil.c
index 4fbf1463d8..4625203dd8 100644
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@@ -85,7 +85,7 @@ void ctgFreeTbMetaCache(SCtgTbMetaCache *cache) {
     int32_t stblNum = taosHashGetSize(cache->stbCache);  
     taosHashCleanup(cache->stbCache);
     cache->stbCache = NULL;
-    CTG_CACHE_STAT_SUB(stblNum, stblNum);
+    CTG_CACHE_STAT_DEC(stblNum, stblNum);
   }
   CTG_UNLOCK(CTG_WRITE, &cache->stbLock);
 
@@ -94,7 +94,7 @@ void ctgFreeTbMetaCache(SCtgTbMetaCache *cache) {
     int32_t tblNum = taosHashGetSize(cache->metaCache);
     taosHashCleanup(cache->metaCache);
     cache->metaCache = NULL;
-    CTG_CACHE_STAT_SUB(tblNum, tblNum);
+    CTG_CACHE_STAT_DEC(tblNum, tblNum);
   }
   CTG_UNLOCK(CTG_WRITE, &cache->metaLock);
 }
@@ -145,7 +145,7 @@ void ctgFreeHandle(SCatalog* pCtg) {
 
     taosHashCleanup(pCtg->dbCache);
     
-    CTG_CACHE_STAT_SUB(dbNum, dbNum);
+    CTG_CACHE_STAT_DEC(dbNum, dbNum);
   }
 
   if (pCtg->userCache) {
@@ -162,7 +162,7 @@ void ctgFreeHandle(SCatalog* pCtg) {
 
     taosHashCleanup(pCtg->userCache);
 
-    CTG_CACHE_STAT_SUB(userNum, userNum);
+    CTG_CACHE_STAT_DEC(userNum, userNum);
   }
 
   taosMemoryFree(pCtg);
diff --git a/source/libs/executor/inc/dataSinkInt.h b/source/libs/executor/inc/dataSinkInt.h
index 85356a862c..8f49440105 100644
--- a/source/libs/executor/inc/dataSinkInt.h
+++ b/source/libs/executor/inc/dataSinkInt.h
@@ -37,6 +37,7 @@ typedef void (*FEndPut)(struct SDataSinkHandle* pHandle, uint64_t useconds);
 typedef void (*FGetDataLength)(struct SDataSinkHandle* pHandle, int32_t* pLen, bool* pQueryEnd);
 typedef int32_t (*FGetDataBlock)(struct SDataSinkHandle* pHandle, SOutputData* pOutput);
 typedef int32_t (*FDestroyDataSinker)(struct SDataSinkHandle* pHandle);
+typedef int32_t (*FGetCacheSize)(struct SDataSinkHandle* pHandle, uint64_t* size);
 
 typedef struct SDataSinkHandle {
   FPutDataBlock fPut;
@@ -44,6 +45,7 @@ typedef struct SDataSinkHandle {
   FGetDataLength fGetLen;
   FGetDataBlock fGetData;
   FDestroyDataSinker fDestroy;
+  FGetCacheSize fGetCacheSize;
 } SDataSinkHandle;
 
 int32_t createDataDispatcher(SDataSinkManager* pManager, const SDataSinkNode* pDataSink, DataSinkHandle* pHandle);
diff --git a/source/libs/executor/src/dataDispatcher.c b/source/libs/executor/src/dataDispatcher.c
index fa9e27a5f8..080cf5c2ad 100644
--- a/source/libs/executor/src/dataDispatcher.c
+++ b/source/libs/executor/src/dataDispatcher.c
@@ -22,6 +22,8 @@
 #include "tglobal.h"
 #include "tqueue.h"
 
+extern SDataSinkStat gDataSinkStat;
+
 typedef struct SDataDispatchBuf {
   int32_t useSize;
   int32_t allocSize;
@@ -45,6 +47,7 @@ typedef struct SDataDispatchHandle {
   int32_t             status;
   bool                queryEnd;
   uint64_t            useconds;
+  uint64_t            cachedSize;
   TdThreadMutex       mutex;
 } SDataDispatchHandle;
 
@@ -71,7 +74,7 @@ static bool needCompress(const SSDataBlock* pData, int32_t numOfCols) {
 // +----------------+--------------+----------+--------------------------------------+-------------+-----------+-------------+-----------+
 // The length of bitmap is decided by number of rows of this data block, and the length of each column data is
 // recorded in the first segment, next to the struct header
-static void toDataCacheEntry(const SDataDispatchHandle* pHandle, const SInputData* pInput, SDataDispatchBuf* pBuf) {
+static void toDataCacheEntry(SDataDispatchHandle* pHandle, const SInputData* pInput, SDataDispatchBuf* pBuf) {
   int32_t numOfCols = LIST_LENGTH(pHandle->pSchema->pSlots);
 
   SDataCacheEntry* pEntry = (SDataCacheEntry*)pBuf->pData;
@@ -84,6 +87,9 @@ static void toDataCacheEntry(const SDataDispatchHandle* pHandle, const SInputDat
   blockCompressEncode(pInput->pData, pEntry->data, &pEntry->dataLen, numOfCols, pEntry->compressed);
 
   pBuf->useSize += pEntry->dataLen;
+  
+  atomic_add_fetch_64(&pHandle->cachedSize, pEntry->dataLen); 
+  atomic_add_fetch_64(&gDataSinkStat.cachedSize, pEntry->dataLen); 
 }
 
 static bool allocBuf(SDataDispatchHandle* pDispatcher, const SInputData* pInput, SDataDispatchBuf* pBuf) {
@@ -156,6 +162,7 @@ static void getDataLength(SDataSinkHandle* pHandle, int32_t* pLen, bool* pQueryE
   taosFreeQitem(pBuf);
   *pLen = ((SDataCacheEntry*)(pDispatcher->nextOutput.pData))->dataLen;
   *pQueryEnd = pDispatcher->queryEnd;
+  qDebug("got data len %d, row num %d in sink", *pLen, ((SDataCacheEntry*)(pDispatcher->nextOutput.pData))->numOfRows);
 }
 
 static int32_t getDataBlock(SDataSinkHandle* pHandle, SOutputData* pOutput) {
@@ -173,6 +180,10 @@ static int32_t getDataBlock(SDataSinkHandle* pHandle, SOutputData* pOutput) {
   pOutput->numOfRows = pEntry->numOfRows;
   pOutput->numOfCols = pEntry->numOfCols;
   pOutput->compressed = pEntry->compressed;
+
+  atomic_sub_fetch_64(&pDispatcher->cachedSize, pEntry->dataLen);  
+  atomic_sub_fetch_64(&gDataSinkStat.cachedSize, pEntry->dataLen); 
+
   taosMemoryFreeClear(pDispatcher->nextOutput.pData);  // todo persistent
   pOutput->bufStatus = updateStatus(pDispatcher);
   taosThreadMutexLock(&pDispatcher->mutex);
@@ -180,11 +191,14 @@ static int32_t getDataBlock(SDataSinkHandle* pHandle, SOutputData* pOutput) {
   pOutput->useconds = pDispatcher->useconds;
   pOutput->precision = pDispatcher->pSchema->precision;
   taosThreadMutexUnlock(&pDispatcher->mutex);
+
+  
   return TSDB_CODE_SUCCESS;
 }
 
 static int32_t destroyDataSinker(SDataSinkHandle* pHandle) {
   SDataDispatchHandle* pDispatcher = (SDataDispatchHandle*)pHandle;
+  atomic_sub_fetch_64(&gDataSinkStat.cachedSize, pDispatcher->cachedSize);
   taosMemoryFreeClear(pDispatcher->nextOutput.pData);
   while (!taosQueueEmpty(pDispatcher->pDataBlocks)) {
     SDataDispatchBuf* pBuf = NULL;
@@ -197,6 +211,13 @@ static int32_t destroyDataSinker(SDataSinkHandle* pHandle) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t getCacheSize(struct SDataSinkHandle* pHandle, uint64_t* size) {
+  SDataDispatchHandle* pDispatcher = (SDataDispatchHandle*)pHandle;
+
+  *size = atomic_load_64(&pDispatcher->cachedSize);
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t createDataDispatcher(SDataSinkManager* pManager, const SDataSinkNode* pDataSink, DataSinkHandle* pHandle) {
   SDataDispatchHandle* dispatcher = taosMemoryCalloc(1, sizeof(SDataDispatchHandle));
   if (NULL == dispatcher) {
@@ -208,6 +229,7 @@ int32_t createDataDispatcher(SDataSinkManager* pManager, const SDataSinkNode* pD
   dispatcher->sink.fGetLen = getDataLength;
   dispatcher->sink.fGetData = getDataBlock;
   dispatcher->sink.fDestroy = destroyDataSinker;
+  dispatcher->sink.fGetCacheSize = getCacheSize;
   dispatcher->pManager = pManager;
   dispatcher->pSchema = pDataSink->pInputDataBlockDesc;
   dispatcher->status = DS_BUF_EMPTY;
diff --git a/source/libs/executor/src/dataSinkMgt.c b/source/libs/executor/src/dataSinkMgt.c
index 64206fc10a..9016ca274a 100644
--- a/source/libs/executor/src/dataSinkMgt.c
+++ b/source/libs/executor/src/dataSinkMgt.c
@@ -19,6 +19,7 @@
 #include "planner.h"
 
 static SDataSinkManager gDataSinkManager = {0};
+SDataSinkStat gDataSinkStat = {0};
 
 int32_t dsDataSinkMgtInit(SDataSinkMgtCfg *cfg) {
   gDataSinkManager.cfg = *cfg;
@@ -26,6 +27,13 @@ int32_t dsDataSinkMgtInit(SDataSinkMgtCfg *cfg) {
   return 0; // to avoid compiler eror
 }
 
+int32_t dsDataSinkGetCacheSize(SDataSinkStat *pStat) {
+  pStat->cachedSize = atomic_load_64(&gDataSinkStat.cachedSize);
+
+  return 0;
+}
+
+
 int32_t dsCreateDataSinker(const SDataSinkNode *pDataSink, DataSinkHandle* pHandle) {
   if (QUERY_NODE_PHYSICAL_PLAN_DISPATCH == nodeType(pDataSink)) {
     return createDataDispatcher(&gDataSinkManager, pDataSink, pHandle);
@@ -53,6 +61,12 @@ int32_t dsGetDataBlock(DataSinkHandle handle, SOutputData* pOutput) {
   return pHandleImpl->fGetData(pHandleImpl, pOutput);
 }
 
+int32_t dsGetCacheSize(DataSinkHandle handle, uint64_t *pSize) {
+  SDataSinkHandle* pHandleImpl = (SDataSinkHandle*)handle;
+  return pHandleImpl->fGetCacheSize(pHandleImpl, pSize);
+}
+
+
 void dsScheduleProcess(void* ahandle, void* pItem) {
   // todo
 }
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index bbdb3b2b7e..785060fa30 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -303,7 +303,9 @@ void addTagPseudoColumnData(STableScanInfo* pTableScanInfo, SSDataBlock* pBlock)
     int32_t dstSlotId = pExpr->base.resSchema.slotId;
 
     SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, dstSlotId);
+    
     colInfoDataEnsureCapacity(pColInfoData, 0, pBlock->info.rows);
+    colInfoDataCleanup(pColInfoData, pBlock->info.rows);
 
     int32_t functionId = pExpr->pExpr->_function.functionId;
 
diff --git a/source/libs/monitor/src/monMsg.c b/source/libs/monitor/src/monMsg.c
index e106cbd428..944a7b5475 100644
--- a/source/libs/monitor/src/monMsg.c
+++ b/source/libs/monitor/src/monMsg.c
@@ -556,4 +556,50 @@ int32_t tDeserializeSMonMloadInfo(void *buf, int32_t bufLen, SMonMloadInfo *pInf
 
   tDecoderClear(&decoder);
   return 0;
-}
\ No newline at end of file
+}
+
+
+int32_t tSerializeSQnodeLoad(void *buf, int32_t bufLen, SQnodeLoad *pInfo) {
+  SEncoder encoder = {0};
+  tEncoderInit(&encoder, buf, bufLen);
+
+  if (tStartEncode(&encoder) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfProcessedQuery) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfProcessedCQuery) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfProcessedFetch) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfProcessedDrop) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfProcessedHb) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->cacheDataSize) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfQueryInQueue) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->numOfFetchInQueue) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->timeInQueryQueue) < 0) return -1;
+  if (tEncodeI64(&encoder, pInfo->timeInFetchQueue) < 0) return -1;
+  tEndEncode(&encoder);
+
+  int32_t tlen = encoder.pos;
+  tEncoderClear(&encoder);
+  return tlen;
+}
+
+int32_t tDeserializeSQnodeLoad(void *buf, int32_t bufLen, SQnodeLoad *pInfo) {
+  SDecoder decoder = {0};
+  tDecoderInit(&decoder, buf, bufLen);
+
+  if (tStartDecode(&decoder) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfProcessedQuery) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfProcessedCQuery) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfProcessedFetch) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfProcessedDrop) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfProcessedHb) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->cacheDataSize) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfQueryInQueue) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->numOfFetchInQueue) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->timeInQueryQueue) < 0) return -1;
+  if (tDecodeI64(&decoder, &pInfo->timeInFetchQueue) < 0) return -1;
+  tEndDecode(&decoder);
+
+  tDecoderClear(&decoder);
+  return 0;
+}
+
+
diff --git a/source/libs/planner/src/planPhysiCreater.c b/source/libs/planner/src/planPhysiCreater.c
index 0f88a54e91..50819ffc87 100644
--- a/source/libs/planner/src/planPhysiCreater.c
+++ b/source/libs/planner/src/planPhysiCreater.c
@@ -468,6 +468,7 @@ static int32_t createTagScanPhysiNode(SPhysiPlanContext* pCxt, SSubplan* pSubpla
     return TSDB_CODE_OUT_OF_MEMORY;
   }
   vgroupInfoToNodeAddr(pScanLogicNode->pVgroupList->vgroups, &pSubplan->execNode);
+  SQueryNodeLoad node = {.addr = pSubplan->execNode, .load = 0};
   taosArrayPush(pCxt->pExecNodeList, &pSubplan->execNode);
   return createScanPhysiNodeFinalize(pCxt, pSubplan, pScanLogicNode, (SScanPhysiNode*)pTagScan, pPhyNode);
 }
@@ -489,7 +490,8 @@ static int32_t createTableScanPhysiNode(SPhysiPlanContext* pCxt, SSubplan* pSubp
     pSubplan->execNodeStat.tableNum = pScanLogicNode->pVgroupList->vgroups[0].numOfTable;
   }
   if (pCxt->pExecNodeList) {
-    taosArrayPush(pCxt->pExecNodeList, &pSubplan->execNode);
+    SQueryNodeLoad node = {.addr = pSubplan->execNode, .load = 0};
+    taosArrayPush(pCxt->pExecNodeList, &node);
   }
   tNameGetFullDbName(&pScanLogicNode->tableName, pSubplan->dbFName);
   pTableScan->dataRequired = pScanLogicNode->dataRequired;
@@ -520,10 +522,11 @@ static int32_t createSystemTableScanPhysiNode(SPhysiPlanContext* pCxt, SSubplan*
   pScan->accountId = pCxt->pPlanCxt->acctId;
   if (0 == strcmp(pScanLogicNode->tableName.tname, TSDB_INS_TABLE_USER_TABLES)) {
     vgroupInfoToNodeAddr(pScanLogicNode->pVgroupList->vgroups, &pSubplan->execNode);
+    SQueryNodeLoad node = { .addr = pSubplan->execNode, .load = 0};
     taosArrayPush(pCxt->pExecNodeList, &pSubplan->execNode);
   } else {
-    SQueryNodeAddr addr = {.nodeId = MNODE_HANDLE, .epSet = pCxt->pPlanCxt->mgmtEpSet};
-    taosArrayPush(pCxt->pExecNodeList, &addr);
+    SQueryNodeLoad node = { .addr = {.nodeId = MNODE_HANDLE, .epSet = pCxt->pPlanCxt->mgmtEpSet}, .load = 0};
+    taosArrayPush(pCxt->pExecNodeList, &node);
   }
   pScan->mgmtEpSet = pCxt->pPlanCxt->mgmtEpSet;
   tNameGetFullDbName(&pScanLogicNode->tableName, pSubplan->dbFName);
@@ -1243,7 +1246,8 @@ static int32_t createPhysiSubplan(SPhysiPlanContext* pCxt, SLogicSubplan* pLogic
     SVnodeModifLogicNode* pModif = (SVnodeModifLogicNode*)pLogicSubplan->pNode;
     pSubplan->msgType = pModif->msgType;
     pSubplan->execNode.epSet = pModif->pVgDataBlocks->vg.epSet;
-    taosArrayPush(pCxt->pExecNodeList, &pSubplan->execNode);
+    SQueryNodeLoad node = {.addr = pSubplan->execNode, .load = 0};
+    taosArrayPush(pCxt->pExecNodeList, &node);
     code = createDataInserter(pCxt, pModif->pVgDataBlocks, &pSubplan->pDataSink);
   } else {
     pSubplan->msgType = TDMT_VND_QUERY;
diff --git a/source/libs/qcom/src/querymsg.c b/source/libs/qcom/src/querymsg.c
index 636b2b50a8..810c0153b1 100644
--- a/source/libs/qcom/src/querymsg.c
+++ b/source/libs/qcom/src/querymsg.c
@@ -373,7 +373,7 @@ int32_t queryProcessQnodeListRsp(void *output, char *msg, int32_t msgSize) {
     return code;
   }
 
-  out.addrsList = (SArray *)output;
+  out.qnodeList = (SArray *)output;
   if (tDeserializeSQnodeListRsp(msg, msgSize, &out) != 0) {
     qError("invalid qnode list rsp msg, msgSize:%d", msgSize);
     code = TSDB_CODE_INVALID_MSG;
diff --git a/source/libs/qworker/inc/qwInt.h b/source/libs/qworker/inc/qwInt.h
index b0a102069d..4fe3c18393 100644
--- a/source/libs/qworker/inc/qwInt.h
+++ b/source/libs/qworker/inc/qwInt.h
@@ -145,13 +145,30 @@ typedef struct SQWSchStatus {
   SHashObj      *tasksHash;  // key:queryId+taskId, value: SQWTaskStatus
 } SQWSchStatus;
 
-typedef struct SQWWaitTimeStat {
+typedef struct SQWTimeInQ {
   uint64_t num;
   uint64_t total;
-} SQWWaitTimeStat;
+} SQWTimeInQ;
+
+typedef struct SQWMsgStat {
+  SQWTimeInQ waitTime[2];
+  uint64_t queryProcessed;
+  uint64_t cqueryProcessed;
+  uint64_t fetchProcessed;
+  uint64_t fetchRspProcessed;
+  uint64_t cancelProcessed;
+  uint64_t dropProcessed;
+  uint64_t hbProcessed;
+} SQWMsgStat;
+
+typedef struct SQWRTStat {
+  uint64_t startTaskNum;
+  uint64_t stopTaskNum;
+} SQWRTStat;
 
 typedef struct SQWStat {
-  SQWWaitTimeStat msgWait[2];
+  SQWMsgStat   msgStat;
+  SQWRTStat    rtStat;
 } SQWStat;
 
 // Qnode/Vnode level task management
@@ -182,10 +199,13 @@ typedef struct SQWorkerMgmt {
 #define QW_IDS()       sId, qId, tId, rId
 #define QW_FPARAMS()   mgmt, QW_IDS()
 
-#define QW_GET_EVENT_VALUE(ctx, event) atomic_load_8(&(ctx)->events[event])
+#define QW_STAT_INC(_item, _n) atomic_add_fetch_64(&(_item), _n)
+#define QW_STAT_DEC(_item, _n) atomic_sub_fetch_64(&(_item), _n)
+#define QW_STAT_GET(_item) atomic_load_64(&(_item))
 
-#define QW_IS_EVENT_RECEIVED(ctx, event)   (atomic_load_8(&(ctx)->events[event]) == QW_EVENT_RECEIVED)
-#define QW_IS_EVENT_PROCESSED(ctx, event)  (atomic_load_8(&(ctx)->events[event]) == QW_EVENT_PROCESSED)
+#define QW_GET_EVENT(ctx, event) atomic_load_8(&(ctx)->events[event])
+#define QW_IS_EVENT_RECEIVED(ctx, event)   (QW_GET_EVENT(ctx, event) == QW_EVENT_RECEIVED)
+#define QW_IS_EVENT_PROCESSED(ctx, event)  (QW_GET_EVENT(ctx, event) == QW_EVENT_PROCESSED)
 #define QW_SET_EVENT_RECEIVED(ctx, event)  atomic_store_8(&(ctx)->events[event], QW_EVENT_RECEIVED)
 #define QW_SET_EVENT_PROCESSED(ctx, event) atomic_store_8(&(ctx)->events[event], QW_EVENT_PROCESSED)
 
@@ -332,8 +352,8 @@ int32_t qwDropTask(QW_FPARAMS_DEF);
 void qwSaveTbVersionInfo(qTaskInfo_t       pTaskInfo, SQWTaskCtx *ctx);
 int32_t qwOpenRef(void);
 void qwSetHbParam(int64_t refId, SQWHbParam **pParam);
-int32_t qwUpdateWaitTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type);
-int64_t qwGetWaitTimeInQueue(SQWorker *mgmt, EQueueType type);
+int32_t qwUpdateTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type);
+int64_t qwGetTimeInQueue(SQWorker *mgmt, EQueueType type);
 
 void qwDbgDumpMgmtInfo(SQWorker *mgmt);
 int32_t qwDbgValidateStatus(QW_FPARAMS_DEF, int8_t oriStatus, int8_t newStatus, bool *ignore);
diff --git a/source/libs/qworker/src/qwMsg.c b/source/libs/qworker/src/qwMsg.c
index b9dc18cd2f..f8205a6bb4 100644
--- a/source/libs/qworker/src/qwMsg.c
+++ b/source/libs/qworker/src/qwMsg.c
@@ -257,7 +257,8 @@ int32_t qWorkerProcessQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int
   SSubQueryMsg *msg = pMsg->pCont;
   SQWorker *    mgmt = (SQWorker *)qWorkerMgmt;
 
-  qwUpdateWaitTimeInQueue(mgmt, ts, QUERY_QUEUE);
+  qwUpdateTimeInQueue(mgmt, ts, QUERY_QUEUE);
+  QW_STAT_INC(mgmt->stat.msgStat.queryProcessed, 1);
 
   if (NULL == msg || pMsg->contLen <= sizeof(*msg)) {
     QW_ELOG("invalid query msg, msg:%p, msgLen:%d", msg, pMsg->contLen);
@@ -297,7 +298,8 @@ int32_t qWorkerProcessCQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, in
   SQWTaskCtx *       handles = NULL;
   SQWorker *         mgmt = (SQWorker *)qWorkerMgmt;
 
-  qwUpdateWaitTimeInQueue(mgmt, ts, QUERY_QUEUE);
+  qwUpdateTimeInQueue(mgmt, ts, QUERY_QUEUE);
+  QW_STAT_INC(mgmt->stat.msgStat.cqueryProcessed, 1);
 
   if (NULL == msg || pMsg->contLen < sizeof(*msg)) {
     QW_ELOG("invalid cquery msg, msg:%p, msgLen:%d", msg, pMsg->contLen);
@@ -328,7 +330,8 @@ int32_t qWorkerProcessFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int
   SResFetchReq *msg = pMsg->pCont;
   SQWorker *    mgmt = (SQWorker *)qWorkerMgmt;
 
-  qwUpdateWaitTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  qwUpdateTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  QW_STAT_INC(mgmt->stat.msgStat.fetchProcessed, 1);
 
   if (NULL == msg || pMsg->contLen < sizeof(*msg)) {
     QW_ELOG("invalid fetch msg, msg:%p, msgLen:%d", msg, pMsg->contLen);
@@ -357,7 +360,10 @@ int32_t qWorkerProcessFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int
 
 int32_t qWorkerProcessFetchRsp(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int64_t ts) {
   SQWorker *      mgmt = (SQWorker *)qWorkerMgmt;
-  qwUpdateWaitTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  if (mgmt) {
+    qwUpdateTimeInQueue(mgmt, ts, FETCH_QUEUE);
+    QW_STAT_INC(mgmt->stat.msgStat.fetchRspProcessed, 1);
+  }
 
   qProcessFetchRsp(NULL, pMsg, NULL);
   pMsg->pCont = NULL;
@@ -373,7 +379,8 @@ int32_t qWorkerProcessCancelMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, in
   int32_t         code = 0;
   STaskCancelReq *msg = pMsg->pCont;
 
-  qwUpdateWaitTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  qwUpdateTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  QW_STAT_INC(mgmt->stat.msgStat.cancelProcessed, 1);
 
   if (NULL == msg || pMsg->contLen < sizeof(*msg)) {
     qError("invalid task cancel msg");
@@ -411,7 +418,8 @@ int32_t qWorkerProcessDropMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int6
   STaskDropReq *msg = pMsg->pCont;
   SQWorker *    mgmt = (SQWorker *)qWorkerMgmt;
 
-  qwUpdateWaitTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  qwUpdateTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  QW_STAT_INC(mgmt->stat.msgStat.dropProcessed, 1);
 
   if (NULL == msg || pMsg->contLen < sizeof(*msg)) {
     QW_ELOG("invalid task drop msg, msg:%p, msgLen:%d", msg, pMsg->contLen);
@@ -452,7 +460,8 @@ int32_t qWorkerProcessHbMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int64_
   SSchedulerHbReq req = {0};
   SQWorker *      mgmt = (SQWorker *)qWorkerMgmt;
 
-  qwUpdateWaitTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  qwUpdateTimeInQueue(mgmt, ts, FETCH_QUEUE);
+  QW_STAT_INC(mgmt->stat.msgStat.hbProcessed, 1);
 
   if (NULL == pMsg->pCont) {
     QW_ELOG("invalid hb msg, msg:%p, msgLen:%d", pMsg->pCont, pMsg->contLen);
diff --git a/source/libs/qworker/src/qwUtil.c b/source/libs/qworker/src/qwUtil.c
index a4bc22fc88..e5d606ffff 100644
--- a/source/libs/qworker/src/qwUtil.c
+++ b/source/libs/qworker/src/qwUtil.c
@@ -499,7 +499,7 @@ int32_t qwOpenRef(void) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t qwUpdateWaitTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type) {
+int32_t qwUpdateTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type) {
   if (ts <= 0) {
     return TSDB_CODE_SUCCESS;
   }
@@ -507,12 +507,12 @@ int32_t qwUpdateWaitTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type) {
   int64_t duration = taosGetTimestampUs() - ts;
   switch (type) {
     case QUERY_QUEUE:
-      ++mgmt->stat.msgWait[0].num;
-      mgmt->stat.msgWait[0].total += duration;
+      ++mgmt->stat.msgStat.waitTime[0].num;
+      mgmt->stat.msgStat.waitTime[0].total += duration;
       break;
     case FETCH_QUEUE:
-      ++mgmt->stat.msgWait[1].num;
-      mgmt->stat.msgWait[1].total += duration;
+      ++mgmt->stat.msgStat.waitTime[1].num;
+      mgmt->stat.msgStat.waitTime[1].total += duration;
       break;
     default:
       qError("unsupported queue type %d", type);
@@ -522,19 +522,20 @@ int32_t qwUpdateWaitTimeInQueue(SQWorker *mgmt, int64_t ts, EQueueType type) {
   return TSDB_CODE_SUCCESS;
 }
 
-int64_t qwGetWaitTimeInQueue(SQWorker *mgmt, EQueueType type) {
-  SQWWaitTimeStat *pStat = NULL;
+int64_t qwGetTimeInQueue(SQWorker *mgmt, EQueueType type) {
+  SQWTimeInQ *pStat = NULL;
   switch (type) {
     case QUERY_QUEUE:
-      pStat = &mgmt->stat.msgWait[0];
+      pStat = &mgmt->stat.msgStat.waitTime[0];
       return pStat->num ? (pStat->total/pStat->num) : 0;
     case FETCH_QUEUE:
-      pStat = &mgmt->stat.msgWait[1];
+      pStat = &mgmt->stat.msgStat.waitTime[1];
       return pStat->num ? (pStat->total/pStat->num) : 0;
     default:
       qError("unsupported queue type %d", type);
-      return -1;
   }
+
+  return -1;
 }
 
 
diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index 7201820854..03b8cd5cca 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -1,4 +1,3 @@
-#include "qworker.h"
 #include "dataSinkMgt.h"
 #include "executor.h"
 #include "planner.h"
@@ -8,6 +7,7 @@
 #include "tcommon.h"
 #include "tmsg.h"
 #include "tname.h"
+#include "qworker.h"
 
 SQWorkerMgmt gQwMgmt = {
     .lock = 0,
@@ -950,8 +950,29 @@ void qWorkerDestroy(void **qWorkerMgmt) {
   }
 }
 
-int64_t qWorkerGetWaitTimeInQueue(void *qWorkerMgmt, EQueueType type) {
-  return qwGetWaitTimeInQueue((SQWorker *)qWorkerMgmt, type);
+int32_t qWorkerGetStat(SReadHandle *handle, void *qWorkerMgmt, SQWorkerStat *pStat) {
+  if (NULL == handle || NULL == qWorkerMgmt || NULL == pStat) {
+    QW_RET(TSDB_CODE_QRY_INVALID_INPUT);
+  }
+
+  SQWorker *mgmt = (SQWorker *)qWorkerMgmt;
+  SDataSinkStat sinkStat = {0};
+  
+  dsDataSinkGetCacheSize(&sinkStat);
+  pStat->cacheDataSize = sinkStat.cachedSize;
+  
+  pStat->queryProcessed = QW_STAT_GET(mgmt->stat.msgStat.queryProcessed);
+  pStat->cqueryProcessed = QW_STAT_GET(mgmt->stat.msgStat.cqueryProcessed);
+  pStat->fetchProcessed = QW_STAT_GET(mgmt->stat.msgStat.fetchProcessed);
+  pStat->dropProcessed = QW_STAT_GET(mgmt->stat.msgStat.dropProcessed);
+  pStat->hbProcessed = QW_STAT_GET(mgmt->stat.msgStat.hbProcessed);
+
+  pStat->numOfQueryInQueue = handle->pMsgCb->qsizeFp(handle->pMsgCb->mgmt, mgmt->nodeId, QUERY_QUEUE);
+  pStat->numOfFetchInQueue = handle->pMsgCb->qsizeFp(handle->pMsgCb->mgmt, mgmt->nodeId, FETCH_QUEUE);
+  pStat->timeInQueryQueue = qwGetTimeInQueue((SQWorker *)qWorkerMgmt, QUERY_QUEUE);
+  pStat->timeInFetchQueue = qwGetTimeInQueue((SQWorker *)qWorkerMgmt, FETCH_QUEUE);
+
+  return TSDB_CODE_SUCCESS;
 }
 
 
diff --git a/source/libs/scheduler/src/schJob.c b/source/libs/scheduler/src/schJob.c
index e5aa2bd523..00bebcd5ac 100644
--- a/source/libs/scheduler/src/schJob.c
+++ b/source/libs/scheduler/src/schJob.c
@@ -469,6 +469,34 @@ _return:
   SCH_RET(code);
 }
 
+int32_t schSetAddrsFromNodeList(SSchJob *pJob, SSchTask *pTask) {
+  int32_t addNum = 0;
+  int32_t nodeNum = 0;
+  
+  if (pJob->nodeList) {
+    nodeNum = taosArrayGetSize(pJob->nodeList);
+
+    for (int32_t i = 0; i < nodeNum && addNum < SCH_MAX_CANDIDATE_EP_NUM; ++i) {
+      SQueryNodeAddr *naddr = taosArrayGet(pJob->nodeList, i);
+
+      if (NULL == taosArrayPush(pTask->candidateAddrs, naddr)) {
+        SCH_TASK_ELOG("taosArrayPush execNode to candidate addrs failed, addNum:%d, errno:%d", addNum, errno);
+        SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+      }
+
+      ++addNum;
+    }
+  }
+
+  if (addNum <= 0) {
+    SCH_TASK_ELOG("no available execNode as candidates, nodeNum:%d", nodeNum);
+    SCH_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t schSetTaskCandidateAddrs(SSchJob *pJob, SSchTask *pTask) {
   if (NULL != pTask->candidateAddrs) {
     return TSDB_CODE_SUCCESS;
@@ -492,27 +520,7 @@ int32_t schSetTaskCandidateAddrs(SSchJob *pJob, SSchTask *pTask) {
     return TSDB_CODE_SUCCESS;
   }
 
-  int32_t addNum = 0;
-  int32_t nodeNum = 0;
-  if (pJob->nodeList) {
-    nodeNum = taosArrayGetSize(pJob->nodeList);
-
-    for (int32_t i = 0; i < nodeNum && addNum < SCH_MAX_CANDIDATE_EP_NUM; ++i) {
-      SQueryNodeAddr *naddr = taosArrayGet(pJob->nodeList, i);
-
-      if (NULL == taosArrayPush(pTask->candidateAddrs, naddr)) {
-        SCH_TASK_ELOG("taosArrayPush execNode to candidate addrs failed, addNum:%d, errno:%d", addNum, errno);
-        SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
-      }
-
-      ++addNum;
-    }
-  }
-
-  if (addNum <= 0) {
-    SCH_TASK_ELOG("no available execNode as candidates, nodeNum:%d", nodeNum);
-    SCH_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
-  }
+  SCH_ERR_RET(schSetAddrsFromNodeList(pJob, pTask));
 
   /*
     for (int32_t i = 0; i < job->dataSrcEps.numOfEps && addNum < SCH_MAX_CANDIDATE_EP_NUM; ++i) {
diff --git a/source/libs/scheduler/src/scheduler.c b/source/libs/scheduler/src/scheduler.c
index 3ecc4f4a30..522bd8044d 100644
--- a/source/libs/scheduler/src/scheduler.c
+++ b/source/libs/scheduler/src/scheduler.c
@@ -141,7 +141,7 @@ int32_t schedulerGetTasksStatus(int64_t job, SArray *pSub) {
 
   if (pJob->status < JOB_TASK_STATUS_NOT_START || pJob->levelNum <= 0 || NULL == pJob->levels) {
     qDebug("job not initialized or not executable job, refId:%" PRIx64, job);
-    SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
+    SCH_ERR_JRET(TSDB_CODE_SCH_STATUS_ERROR);
   }
 
   for (int32_t i = pJob->levelNum - 1; i >= 0; --i) {
@@ -155,7 +155,11 @@ int32_t schedulerGetTasksStatus(int64_t job, SArray *pSub) {
     }
   }
 
-  return TSDB_CODE_SUCCESS;
+_return:
+
+  schReleaseJob(job);
+
+  SCH_RET(code);
 }
 
 int32_t scheduleCancelJob(int64_t job) {
-- 
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