#3615

Committed 18 Feb 2025 07:41AM UTC coverage: 62.953% (+1.6%) from 61.4%

Build # #3615

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travis-ci

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Commit Message

Merge pull request #29812 from taosdata/doc/analysis

doc: update tdgpt doc.

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66.21

/source/libs/executor/src/streamcountwindowoperator.c

/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
#include "executorInt.h"
#include "function.h"
#include "functionMgt.h"
#include "operator.h"
#include "querytask.h"
#include "streamexecutorInt.h"
#include "tchecksum.h"
#include "tcommon.h"
#include "tdatablock.h"
#include "tglobal.h"
#include "tlog.h"
#include "ttime.h"

#define STREAM_COUNT_OP_STATE_NAME      "StreamCountHistoryState"
#define STREAM_COUNT_OP_CHECKPOINT_NAME "StreamCountOperator_Checkpoint"

typedef struct SCountWindowInfo {
  SResultWindowInfo winInfo;
  COUNT_TYPE*       pWindowCount;
} SCountWindowInfo;

typedef enum {
  NONE_WINDOW = 0,
  CREATE_NEW_WINDOW,
  MOVE_NEXT_WINDOW,
} BuffOp;
typedef struct SBuffInfo {
  bool             rebuildWindow;
  BuffOp           winBuffOp;
  SStreamStateCur* pCur;
} SBuffInfo;

void destroyStreamCountAggOperatorInfo(void* param) {
  if (param == NULL) {
    return;
  }
  SStreamCountAggOperatorInfo* pInfo = (SStreamCountAggOperatorInfo*)param;
  cleanupBasicInfo(&pInfo->binfo);
  if (pInfo->pOperator) {
    cleanupResultInfoInStream(pInfo->pOperator->pTaskInfo, pInfo->streamAggSup.pState, &pInfo->pOperator->exprSupp,
                              &pInfo->groupResInfo);
    pInfo->pOperator = NULL;
  }

  destroyStreamBasicInfo(&pInfo->basic);
  destroyStreamAggSupporter(&pInfo->streamAggSup);
  cleanupExprSupp(&pInfo->scalarSupp);
  clearGroupResInfo(&pInfo->groupResInfo);
  taosArrayDestroyP(pInfo->pUpdated, destroyFlusedPos);
  pInfo->pUpdated = NULL;

  colDataDestroy(&pInfo->twAggSup.timeWindowData);
  blockDataDestroy(pInfo->pDelRes);
  tSimpleHashCleanup(pInfo->pStUpdated);
  tSimpleHashCleanup(pInfo->pStDeleted);
  cleanupGroupResInfo(&pInfo->groupResInfo);

  taosArrayDestroy(pInfo->historyWins);
  blockDataDestroy(pInfo->pCheckpointRes);

  tSimpleHashCleanup(pInfo->pPkDeleted);

  taosMemoryFreeClear(param);
}

bool isSlidingCountWindow(SStreamAggSupporter* pAggSup) { return pAggSup->windowCount != pAggSup->windowSliding; }

int32_t setCountOutputBuf(SStreamAggSupporter* pAggSup, TSKEY ts, uint64_t groupId, SCountWindowInfo* pCurWin,
                          SBuffInfo* pBuffInfo, int32_t* pWinCode) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  int32_t size = pAggSup->resultRowSize;
  pCurWin->winInfo.sessionWin.groupId = groupId;
  pCurWin->winInfo.sessionWin.win.skey = ts;
  pCurWin->winInfo.sessionWin.win.ekey = ts;

  if (isSlidingCountWindow(pAggSup)) {
    if (pBuffInfo->winBuffOp == CREATE_NEW_WINDOW) {
      code =
          pAggSup->stateStore.streamStateCountWinAdd(pAggSup->pState, &pCurWin->winInfo.sessionWin,
                                                     pAggSup->windowCount, (void**)&pCurWin->winInfo.pStatePos, &size);
      QUERY_CHECK_CODE(code, lino, _end);

      *pWinCode = TSDB_CODE_FAILED;
    } else if (pBuffInfo->winBuffOp == MOVE_NEXT_WINDOW) {
      QUERY_CHECK_NULL(pBuffInfo->pCur, code, lino, _end, terrno);
      pAggSup->stateStore.streamStateCurNext(pAggSup->pState, pBuffInfo->pCur);
      *pWinCode = pAggSup->stateStore.streamStateSessionGetKVByCur(pBuffInfo->pCur, &pCurWin->winInfo.sessionWin,
                                                                   (void**)&pCurWin->winInfo.pStatePos, &size);
      if (*pWinCode == TSDB_CODE_FAILED) {
        code = pAggSup->stateStore.streamStateCountWinAdd(pAggSup->pState, &pCurWin->winInfo.sessionWin,
                                                          pAggSup->windowCount, (void**)&pCurWin->winInfo.pStatePos,
                                                          &size);
        QUERY_CHECK_CODE(code, lino, _end);
      } else {
        reuseOutputBuf(pAggSup->pState, pCurWin->winInfo.pStatePos, &pAggSup->stateStore);
      }
    } else {
      pBuffInfo->pCur = pAggSup->stateStore.streamStateCountSeekKeyPrev(pAggSup->pState, &pCurWin->winInfo.sessionWin,
                                                                        pAggSup->windowCount);
      *pWinCode = pAggSup->stateStore.streamStateSessionGetKVByCur(pBuffInfo->pCur, &pCurWin->winInfo.sessionWin,
                                                                   (void**)&pCurWin->winInfo.pStatePos, &size);
      if (*pWinCode == TSDB_CODE_FAILED) {
        code = pAggSup->stateStore.streamStateCountWinAdd(pAggSup->pState, &pCurWin->winInfo.sessionWin,
                                                          pAggSup->windowCount, (void**)&pCurWin->winInfo.pStatePos,
                                                          &size);
        QUERY_CHECK_CODE(code, lino, _end);
      } else {
        reuseOutputBuf(pAggSup->pState, pCurWin->winInfo.pStatePos, &pAggSup->stateStore);
      }
    }
    if (ts < pCurWin->winInfo.sessionWin.win.ekey) {
      pBuffInfo->rebuildWindow = true;
    }
  } else {
    code = pAggSup->stateStore.streamStateCountWinAddIfNotExist(pAggSup->pState, &pCurWin->winInfo.sessionWin,
                                                                pAggSup->windowCount,
                                                                (void**)&pCurWin->winInfo.pStatePos, &size, pWinCode);
    QUERY_CHECK_CODE(code, lino, _end);
  }

  if (*pWinCode == TSDB_CODE_SUCCESS) {
    pCurWin->winInfo.isOutput = true;
  }
  pCurWin->pWindowCount =
      (COUNT_TYPE*)((char*)pCurWin->winInfo.pStatePos->pRowBuff + (pAggSup->resultRowSize - sizeof(COUNT_TYPE)));

  if (*pCurWin->pWindowCount == pAggSup->windowCount) {
    pBuffInfo->rebuildWindow = true;
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

static void removeCountResult(SSHashObj* pHashMap, SSHashObj* pResMap, SSessionKey* pKey) {
  SSessionKey key = {0};
  getSessionHashKey(pKey, &key);
  int32_t code = tSimpleHashRemove(pHashMap, &key, sizeof(SSessionKey));
  if (code != TSDB_CODE_SUCCESS) {
    qInfo("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
  }

  code = tSimpleHashRemove(pResMap, &key, sizeof(SSessionKey));
  if (code != TSDB_CODE_SUCCESS) {
    qInfo("%s failed at line %d since %s", __func__, __LINE__, tstrerror(code));
  }
}

static int32_t updateCountWindowInfo(SStreamAggSupporter* pAggSup, SCountWindowInfo* pWinInfo, TSKEY* pTs,
                                     int32_t start, int32_t rows, int32_t maxRows, SSHashObj* pStUpdated,
                                     SSHashObj* pStDeleted, bool* pRebuild, int32_t* pWinRows) {
  int32_t     code = TSDB_CODE_SUCCESS;
  int32_t     lino = 0;
  SSessionKey sWinKey = pWinInfo->winInfo.sessionWin;
  int32_t     num = 0;
  for (int32_t i = start; i < rows; i++) {
    if (pTs[i] < pWinInfo->winInfo.sessionWin.win.ekey) {
      num++;
    } else {
      break;
    }
  }
  int32_t maxNum = TMIN(maxRows - *pWinInfo->pWindowCount, rows - start);
  if (num > maxNum) {
    *pRebuild = true;
  }
  *pWinInfo->pWindowCount += maxNum;
  bool needDelState = false;
  if (pWinInfo->winInfo.sessionWin.win.skey > pTs[start]) {
    needDelState = true;
    if (pStDeleted && pWinInfo->winInfo.isOutput) {
      code = saveDeleteRes(pStDeleted, pWinInfo->winInfo.sessionWin);
      QUERY_CHECK_CODE(code, lino, _end);
    }

    pWinInfo->winInfo.sessionWin.win.skey = pTs[start];
  }

  if (pWinInfo->winInfo.sessionWin.win.ekey < pTs[maxNum + start - 1]) {
    needDelState = true;
    pWinInfo->winInfo.sessionWin.win.ekey = pTs[maxNum + start - 1];
  }

  if (needDelState) {
    memcpy(pWinInfo->winInfo.pStatePos->pKey, &pWinInfo->winInfo.sessionWin, sizeof(SSessionKey));
    removeCountResult(pStUpdated, pAggSup->pResultRows, &sWinKey);
    if (pWinInfo->winInfo.pStatePos->needFree) {
      pAggSup->stateStore.streamStateSessionDel(pAggSup->pState, &sWinKey);
    }
  }

  (*pWinRows) = maxNum;

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

void getCountWinRange(SStreamAggSupporter* pAggSup, const SSessionKey* pKey, EStreamType mode, SSessionKey* pDelRange) {
  *pDelRange = *pKey;
  SStreamStateCur* pCur = NULL;
  if (isSlidingCountWindow(pAggSup)) {
    pCur = pAggSup->stateStore.streamStateCountSeekKeyPrev(pAggSup->pState, pKey, pAggSup->windowCount);
  } else {
    pCur = pAggSup->stateStore.streamStateSessionSeekKeyCurrentNext(pAggSup->pState, pKey);
  }
  SSessionKey tmpKey = {.groupId = pKey->groupId, .win.ekey = INT64_MIN, .win.skey = INT64_MIN};
  int32_t     code = pAggSup->stateStore.streamStateSessionGetKVByCur(pCur, &tmpKey, NULL, 0);
  if (code != TSDB_CODE_SUCCESS) {
    pAggSup->stateStore.streamStateFreeCur(pCur);
    return;
  }
  pDelRange->win = tmpKey.win;
  while (mode == STREAM_DELETE_DATA || mode == STREAM_PARTITION_DELETE_DATA) {
    pAggSup->stateStore.streamStateCurNext(pAggSup->pState, pCur);
    code = pAggSup->stateStore.streamStateSessionGetKVByCur(pCur, &tmpKey, NULL, 0);
    if (code != TSDB_CODE_SUCCESS) {
      break;
    }
    pDelRange->win.ekey = TMAX(pDelRange->win.ekey, tmpKey.win.ekey);
  }
  pAggSup->stateStore.streamStateFreeCur(pCur);
}

static void destroySBuffInfo(SStreamAggSupporter* pAggSup, SBuffInfo* pBuffInfo) {
  pAggSup->stateStore.streamStateFreeCur(pBuffInfo->pCur);
}

bool inCountCalSlidingWindow(SStreamAggSupporter* pAggSup, STimeWindow* pWin, TSKEY sKey, TSKEY eKey) {
  if (pAggSup->windowCount == pAggSup->windowSliding) {
    return true;
  }
  if (sKey <= pWin->skey && pWin->ekey <= eKey) {
    return true;
  }
  return false;
}

bool inCountSlidingWindow(SStreamAggSupporter* pAggSup, STimeWindow* pWin, SDataBlockInfo* pBlockInfo) {
  return inCountCalSlidingWindow(pAggSup, pWin, pBlockInfo->calWin.skey, pBlockInfo->calWin.ekey);
}

static void doStreamCountAggImpl(SOperatorInfo* pOperator, SSDataBlock* pSDataBlock, SSHashObj* pStUpdated,
                                 SSHashObj* pStDeleted) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  int32_t                      numOfOutput = pOperator->exprSupp.numOfExprs;
  uint64_t                     groupId = pSDataBlock->info.id.groupId;
  SResultRow*                  pResult = NULL;
  int32_t                      rows = pSDataBlock->info.rows;
  int32_t                      winRows = 0;
  SStreamAggSupporter*         pAggSup = &pInfo->streamAggSup;
  SBuffInfo                    buffInfo = {.rebuildWindow = false, .winBuffOp = NONE_WINDOW, .pCur = NULL};

  pInfo->dataVersion = TMAX(pInfo->dataVersion, pSDataBlock->info.version);
  pAggSup->winRange = pTaskInfo->streamInfo.fillHistoryWindow;
  if (pAggSup->winRange.ekey <= 0) {
    pAggSup->winRange.ekey = INT64_MAX;
  }

  SColumnInfoData* pStartTsCol = taosArrayGet(pSDataBlock->pDataBlock, pInfo->primaryTsIndex);
  if (!pStartTsCol) {
    code = TSDB_CODE_FAILED;
    QUERY_CHECK_CODE(code, lino, _end);
  }
  TSKEY* startTsCols = (int64_t*)pStartTsCol->pData;
  code = blockDataEnsureCapacity(pAggSup->pScanBlock, rows * 2);
  QUERY_CHECK_CODE(code, lino, _end);

  SStreamStateCur* pCur = NULL;
  COUNT_TYPE       slidingRows = 0;

  for (int32_t i = 0; i < rows;) {
    if (pInfo->ignoreExpiredData &&
        checkExpiredData(&pInfo->streamAggSup.stateStore, pInfo->streamAggSup.pUpdateInfo, &pInfo->twAggSup,
                         pSDataBlock->info.id.uid, startTsCols[i], NULL, 0)) {
      i++;
      continue;
    }
    SCountWindowInfo curWin = {0};
    int32_t          winCode = TSDB_CODE_SUCCESS;
    buffInfo.rebuildWindow = false;
    code = setCountOutputBuf(pAggSup, startTsCols[i], groupId, &curWin, &buffInfo, &winCode);
    QUERY_CHECK_CODE(code, lino, _end);

    if (winCode != TSDB_CODE_SUCCESS &&
        BIT_FLAG_TEST_MASK(pTaskInfo->streamInfo.eventTypes, SNOTIFY_EVENT_WINDOW_OPEN)) {
      code = addCountAggNotifyEvent(SNOTIFY_EVENT_WINDOW_OPEN, &curWin.winInfo.sessionWin, &pInfo->basic.notifyEventSup,
                                    pTaskInfo->streamInfo.pNotifyEventStat);
      QUERY_CHECK_CODE(code, lino, _end);
    }

    if (!inCountSlidingWindow(pAggSup, &curWin.winInfo.sessionWin.win, &pSDataBlock->info)) {
      buffInfo.winBuffOp = MOVE_NEXT_WINDOW;
      continue;
    }
    setSessionWinOutputInfo(pStUpdated, &curWin.winInfo);
    slidingRows = *curWin.pWindowCount;
    if (!buffInfo.rebuildWindow) {
      code = updateCountWindowInfo(pAggSup, &curWin, startTsCols, i, rows, pAggSup->windowCount, pStUpdated, pStDeleted,
                                   &buffInfo.rebuildWindow, &winRows);
      QUERY_CHECK_CODE(code, lino, _end);
    }
    if (buffInfo.rebuildWindow) {
      SSessionKey range = {0};
      if (isSlidingCountWindow(pAggSup)) {
        curWin.winInfo.sessionWin.win.skey = startTsCols[i];
        curWin.winInfo.sessionWin.win.ekey = startTsCols[i];
      }
      getCountWinRange(pAggSup, &curWin.winInfo.sessionWin, STREAM_DELETE_DATA, &range);
      range.win.skey = TMIN(startTsCols[i], range.win.skey);
      range.win.ekey = TMAX(startTsCols[rows - 1], range.win.ekey);
      uint64_t uid = 0;
      code =
          appendDataToSpecialBlock(pAggSup->pScanBlock, &range.win.skey, &range.win.ekey, &uid, &range.groupId, NULL);
      QUERY_CHECK_CODE(code, lino, _end);
      break;
    }
    code = doOneWindowAggImpl(&pInfo->twAggSup.timeWindowData, &curWin.winInfo, &pResult, i, winRows, rows, numOfOutput,
                              pOperator, 0);
    QUERY_CHECK_CODE(code, lino, _end);

    code = saveSessionOutputBuf(pAggSup, &curWin.winInfo);
    QUERY_CHECK_CODE(code, lino, _end);

    if (pInfo->destHasPrimaryKey && curWin.winInfo.isOutput && IS_NORMAL_COUNT_OP(pOperator)) {
      code = saveDeleteRes(pInfo->pPkDeleted, curWin.winInfo.sessionWin);
      QUERY_CHECK_CODE(code, lino, _end);
    }

    if (pInfo->twAggSup.calTrigger == STREAM_TRIGGER_AT_ONCE && pStUpdated) {
      code = saveResult(curWin.winInfo, pStUpdated);
      QUERY_CHECK_CODE(code, lino, _end);
    }
    if (pInfo->twAggSup.calTrigger == STREAM_TRIGGER_WINDOW_CLOSE) {
      curWin.winInfo.pStatePos->beUpdated = true;
      SSessionKey key = {0};
      getSessionHashKey(&curWin.winInfo.sessionWin, &key);
      code =
          tSimpleHashPut(pAggSup->pResultRows, &key, sizeof(SSessionKey), &curWin.winInfo, sizeof(SResultWindowInfo));
      QUERY_CHECK_CODE(code, lino, _end);
    }

    if (isSlidingCountWindow(pAggSup)) {
      if (slidingRows <= pAggSup->windowSliding) {
        if (slidingRows + winRows > pAggSup->windowSliding) {
          buffInfo.winBuffOp = CREATE_NEW_WINDOW;
          winRows = pAggSup->windowSliding - slidingRows;
        }
      } else {
        buffInfo.winBuffOp = MOVE_NEXT_WINDOW;
        winRows = 0;
      }
    }
    i += winRows;
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
  }
  destroySBuffInfo(pAggSup, &buffInfo);
}

static int32_t buildCountResult(SOperatorInfo* pOperator, SSDataBlock** ppRes) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  SStreamAggSupporter*         pAggSup = &pInfo->streamAggSup;
  SOptrBasicInfo*              pBInfo = &pInfo->binfo;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  SStreamNotifyEventSupp*      pNotifySup = &pInfo->basic.notifyEventSup;
  STaskNotifyEventStat*        pNotifyEventStat = pTaskInfo->streamInfo.pNotifyEventStat;
  bool                         addNotifyEvent = false;
  addNotifyEvent = BIT_FLAG_TEST_MASK(pTaskInfo->streamInfo.eventTypes, SNOTIFY_EVENT_WINDOW_CLOSE);
  doBuildDeleteDataBlock(pOperator, pInfo->pStDeleted, pInfo->pDelRes, &pInfo->pDelIterator);
  if (pInfo->pDelRes->info.rows > 0) {
    printDataBlock(pInfo->pDelRes, getStreamOpName(pOperator->operatorType), GET_TASKID(pTaskInfo));
    if (addNotifyEvent) {
      code = addAggDeleteNotifyEvent(pInfo->pDelRes, pNotifySup, pNotifyEventStat);
      QUERY_CHECK_CODE(code, lino, _end);
    }
    (*ppRes) = pInfo->pDelRes;
    return code;
  }

  doBuildSessionResult(pOperator, pAggSup->pState, &pInfo->groupResInfo, pBInfo->pRes,
                       addNotifyEvent ? pNotifySup->pSessionKeys : NULL);
  if (pBInfo->pRes->info.rows > 0) {
    printDataBlock(pBInfo->pRes, getStreamOpName(pOperator->operatorType), GET_TASKID(pTaskInfo));
    if (addNotifyEvent) {
      code = addAggResultNotifyEvent(pBInfo->pRes, pNotifySup->pSessionKeys, pTaskInfo->streamInfo.notifyResultSchema,
                                     pNotifySup, pNotifyEventStat);
      QUERY_CHECK_CODE(code, lino, _end);
    }
    (*ppRes) = pBInfo->pRes;
    return code;
  }

  code = buildNotifyEventBlock(pTaskInfo, pNotifySup, pNotifyEventStat);
  QUERY_CHECK_CODE(code, lino, _end);
  if (pNotifySup->pEventBlock && pNotifySup->pEventBlock->info.rows > 0) {
    printDataBlock(pNotifySup->pEventBlock, getStreamOpName(pOperator->operatorType), GET_TASKID(pTaskInfo));
    (*ppRes) = pNotifySup->pEventBlock;
    return code;
  }

  code = removeOutdatedNotifyEvents(&pInfo->twAggSup, pNotifySup, pNotifyEventStat);
  QUERY_CHECK_CODE(code, lino, _end);

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
  }
  (*ppRes) = NULL;
  return code;
}

int32_t doStreamCountEncodeOpState(void** buf, int32_t len, SOperatorInfo* pOperator, bool isParent) {
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  if (!pInfo) {
    return 0;
  }

  void* pData = (buf == NULL) ? NULL : *buf;

  // 1.streamAggSup.pResultRows
  int32_t tlen = 0;
  int32_t mapSize = tSimpleHashGetSize(pInfo->streamAggSup.pResultRows);
  tlen += taosEncodeFixedI32(buf, mapSize);
  void*   pIte = NULL;
  size_t  keyLen = 0;
  int32_t iter = 0;
  while ((pIte = tSimpleHashIterate(pInfo->streamAggSup.pResultRows, pIte, &iter)) != NULL) {
    void* key = tSimpleHashGetKey(pIte, &keyLen);
    tlen += encodeSSessionKey(buf, key);
    tlen += encodeSResultWindowInfo(buf, pIte, pInfo->streamAggSup.resultRowSize);
  }

  // 2.twAggSup
  tlen += encodeSTimeWindowAggSupp(buf, &pInfo->twAggSup);

  // 3.dataVersion
  tlen += taosEncodeFixedI32(buf, pInfo->dataVersion);

  // 4.basicInfo
  tlen += encodeStreamBasicInfo(buf, &pInfo->basic);

  // 5.checksum
  if (isParent) {
    if (buf) {
      uint32_t cksum = taosCalcChecksum(0, pData, len - sizeof(uint32_t));
      tlen += taosEncodeFixedU32(buf, cksum);
    } else {
      tlen += sizeof(uint32_t);
    }
  }

  return tlen;
}

int32_t doStreamCountDecodeOpState(void* buf, int32_t len, SOperatorInfo* pOperator, bool isParent) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  void*                        pDataEnd = POINTER_SHIFT(buf, len);
  if (!pInfo) {
    code = TSDB_CODE_FAILED;
    QUERY_CHECK_CODE(code, lino, _end);
  }

  // 5.checksum
  if (isParent) {
    int32_t dataLen = len - sizeof(uint32_t);
    void*   pCksum = POINTER_SHIFT(buf, dataLen);
    if (taosCheckChecksum(buf, dataLen, *(uint32_t*)pCksum) != TSDB_CODE_SUCCESS) {
      code = TSDB_CODE_FAILED;
      QUERY_CHECK_CODE(code, lino, _end);
    }
    pDataEnd = pCksum;
  }

  // 1.streamAggSup.pResultRows
  int32_t mapSize = 0;
  buf = taosDecodeFixedI32(buf, &mapSize);
  for (int32_t i = 0; i < mapSize; i++) {
    SSessionKey      key = {0};
    SCountWindowInfo curWin = {0};
    int32_t          winCode = TSDB_CODE_SUCCESS;
    buf = decodeSSessionKey(buf, &key);
    SBuffInfo buffInfo = {.rebuildWindow = false, .winBuffOp = NONE_WINDOW, .pCur = NULL};
    code = setCountOutputBuf(&pInfo->streamAggSup, key.win.skey, key.groupId, &curWin, &buffInfo, &winCode);
    QUERY_CHECK_CODE(code, lino, _end);

    buf = decodeSResultWindowInfo(buf, &curWin.winInfo, pInfo->streamAggSup.resultRowSize);
    code = tSimpleHashPut(pInfo->streamAggSup.pResultRows, &key, sizeof(SSessionKey), &curWin.winInfo,
                          sizeof(SResultWindowInfo));
    QUERY_CHECK_CODE(code, lino, _end);
  }

  // 2.twAggSup
  buf = decodeSTimeWindowAggSupp(buf, &pInfo->twAggSup);

  // 3.dataVersion
  buf = taosDecodeFixedI64(buf, &pInfo->dataVersion);

  // 4.basicInfo
  if (buf < pDataEnd) {
    code = decodeStreamBasicInfo(&buf, &pInfo->basic);
    QUERY_CHECK_CODE(code, lino, _end);
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
  }
  return code;
}

void doStreamCountSaveCheckpoint(SOperatorInfo* pOperator) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  void*                        pBuf = NULL;
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  if (needSaveStreamOperatorInfo(&pInfo->basic)) {
    int32_t len = doStreamCountEncodeOpState(NULL, 0, pOperator, true);
    pBuf = taosMemoryCalloc(1, len);
    if (!pBuf) {
      code = terrno;
      QUERY_CHECK_CODE(code, lino, _end);
    }
    void* pTmpBuf = pBuf;
    len = doStreamCountEncodeOpState(&pTmpBuf, len, pOperator, true);
    pInfo->streamAggSup.stateStore.streamStateSaveInfo(pInfo->streamAggSup.pState, STREAM_COUNT_OP_CHECKPOINT_NAME,
                                                       strlen(STREAM_COUNT_OP_CHECKPOINT_NAME), pBuf, len);
    saveStreamOperatorStateComplete(&pInfo->basic);
  }

_end:
  taosMemoryFreeClear(pBuf);
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
  }
}

void doResetCountWindows(SStreamAggSupporter* pAggSup, SSDataBlock* pBlock) {
  SColumnInfoData* pStartTsCol = taosArrayGet(pBlock->pDataBlock, START_TS_COLUMN_INDEX);
  TSKEY*           startDatas = (TSKEY*)pStartTsCol->pData;
  SColumnInfoData* pEndTsCol = taosArrayGet(pBlock->pDataBlock, END_TS_COLUMN_INDEX);
  TSKEY*           endDatas = (TSKEY*)pEndTsCol->pData;
  SColumnInfoData* pCalStartTsCol = taosArrayGet(pBlock->pDataBlock, CALCULATE_START_TS_COLUMN_INDEX);
  TSKEY*           calStartDatas = (TSKEY*)pStartTsCol->pData;
  SColumnInfoData* pCalEndTsCol = taosArrayGet(pBlock->pDataBlock, CALCULATE_END_TS_COLUMN_INDEX);
  TSKEY*           calEndDatas = (TSKEY*)pEndTsCol->pData;
  SColumnInfoData* pGroupCol = taosArrayGet(pBlock->pDataBlock, GROUPID_COLUMN_INDEX);
  uint64_t*        gpDatas = (uint64_t*)pGroupCol->pData;

  SRowBuffPos* pPos = NULL;
  int32_t      size = 0;
  for (int32_t i = 0; i < pBlock->info.rows; i++) {
    SSessionKey      key = {.groupId = gpDatas[i], .win.skey = startDatas[i], .win.ekey = endDatas[i]};
    SStreamStateCur* pCur = NULL;
    if (isSlidingCountWindow(pAggSup)) {
      pCur = pAggSup->stateStore.streamStateCountSeekKeyPrev(pAggSup->pState, &key, pAggSup->windowCount);
    } else {
      pCur = pAggSup->stateStore.streamStateSessionSeekKeyCurrentNext(pAggSup->pState, &key);
    }
    while (1) {
      SSessionKey tmpKey = {.groupId = gpDatas[i], .win.skey = INT64_MIN, .win.ekey = INT64_MIN};
      int32_t     code = pAggSup->stateStore.streamStateSessionGetKVByCur(pCur, &tmpKey, (void**)&pPos, &size);
      if (code != TSDB_CODE_SUCCESS || tmpKey.win.skey > endDatas[i]) {
        pAggSup->stateStore.streamStateFreeCur(pCur);
        break;
      }
      if (!inCountCalSlidingWindow(pAggSup, &tmpKey.win, calStartDatas[i], calEndDatas[i])) {
        pAggSup->stateStore.streamStateCurNext(pAggSup->pState, pCur);
        continue;
      }
      pAggSup->stateStore.streamStateSessionReset(pAggSup->pState, pPos->pRowBuff);
      pAggSup->stateStore.streamStateCurNext(pAggSup->pState, pCur);
    }
  }
}

int32_t doDeleteCountWindows(SStreamAggSupporter* pAggSup, SSDataBlock* pBlock, SArray* result) {
  int32_t          code = TSDB_CODE_SUCCESS;
  int32_t          lino = 0;
  SColumnInfoData* pStartTsCol = taosArrayGet(pBlock->pDataBlock, START_TS_COLUMN_INDEX);
  TSKEY*           startDatas = (TSKEY*)pStartTsCol->pData;
  SColumnInfoData* pEndTsCol = taosArrayGet(pBlock->pDataBlock, END_TS_COLUMN_INDEX);
  TSKEY*           endDatas = (TSKEY*)pEndTsCol->pData;
  SColumnInfoData* pCalStartTsCol = taosArrayGet(pBlock->pDataBlock, CALCULATE_START_TS_COLUMN_INDEX);
  TSKEY*           calStartDatas = (TSKEY*)pStartTsCol->pData;
  SColumnInfoData* pCalEndTsCol = taosArrayGet(pBlock->pDataBlock, CALCULATE_END_TS_COLUMN_INDEX);
  TSKEY*           calEndDatas = (TSKEY*)pEndTsCol->pData;
  SColumnInfoData* pGroupCol = taosArrayGet(pBlock->pDataBlock, GROUPID_COLUMN_INDEX);
  uint64_t*        gpDatas = (uint64_t*)pGroupCol->pData;
  for (int32_t i = 0; i < pBlock->info.rows; i++) {
    SSessionKey key = {.win.skey = startDatas[i], .win.ekey = endDatas[i], .groupId = gpDatas[i]};
    while (1) {
      SSessionKey curWin = {0};
      int32_t     winCode = pAggSup->stateStore.streamStateCountGetKeyByRange(pAggSup->pState, &key, &curWin);
      if (winCode != TSDB_CODE_SUCCESS) {
        break;
      }
      doDeleteSessionWindow(pAggSup, &curWin);
      if (result) {
        code = saveDeleteInfo(result, curWin);
        QUERY_CHECK_CODE(code, lino, _end);
      }
    }
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

int32_t deleteCountWinState(SStreamAggSupporter* pAggSup, SSDataBlock* pBlock, SSHashObj* pMapUpdate,
                            SSHashObj* pMapDelete, SSHashObj* pPkDelete, bool needAdd) {
  int32_t code = TSDB_CODE_SUCCESS;
  int32_t lino = 0;
  SArray* pWins = taosArrayInit(16, sizeof(SSessionKey));
  if (!pWins) {
    code = terrno;
    QUERY_CHECK_CODE(code, lino, _end);
  }

  if (isSlidingCountWindow(pAggSup)) {
    code = doDeleteCountWindows(pAggSup, pBlock, pWins);
    QUERY_CHECK_CODE(code, lino, _end);
  } else {
    code = doDeleteTimeWindows(pAggSup, pBlock, pWins);
    QUERY_CHECK_CODE(code, lino, _end);
  }
  removeSessionResults(pAggSup, pMapUpdate, pWins);
  code = copyDeleteWindowInfo(pWins, pMapDelete);
  QUERY_CHECK_CODE(code, lino, _end);
  if (needAdd) {
    code = copyDeleteWindowInfo(pWins, pPkDelete);
    QUERY_CHECK_CODE(code, lino, _end);
  }
  taosArrayDestroy(pWins);

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  }
  return code;
}

static int32_t doStreamCountAggNext(SOperatorInfo* pOperator, SSDataBlock** ppRes) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SExprSupp*                   pSup = &pOperator->exprSupp;
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  SOptrBasicInfo*              pBInfo = &pInfo->binfo;
  SStreamAggSupporter*         pAggSup = &pInfo->streamAggSup;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  qDebug("stask:%s  %s status: %d", GET_TASKID(pTaskInfo), getStreamOpName(pOperator->operatorType), pOperator->status);
  if (pOperator->status == OP_EXEC_DONE) {
    (*ppRes) = NULL;
    return code;
  } else if (pOperator->status == OP_RES_TO_RETURN) {
    SSDataBlock* opRes = NULL;
    code = buildCountResult(pOperator, &opRes);
    QUERY_CHECK_CODE(code, lino, _end);
    if (opRes) {
      (*ppRes) = opRes;
      return code;
    }

    if (pInfo->recvGetAll) {
      pInfo->recvGetAll = false;
      resetUnCloseSessionWinInfo(pInfo->streamAggSup.pResultRows);
    }

    if (pInfo->reCkBlock) {
      pInfo->reCkBlock = false;
      printDataBlock(pInfo->pCheckpointRes, getStreamOpName(pOperator->operatorType), GET_TASKID(pTaskInfo));
      (*ppRes) = pInfo->pCheckpointRes;
      return code;
    }

    setStreamOperatorCompleted(pOperator);
    (*ppRes) = NULL;
    return code;
  }

  SOperatorInfo* downstream = pOperator->pDownstream[0];
  if (!pInfo->pUpdated) {
    pInfo->pUpdated = taosArrayInit(16, sizeof(SResultWindowInfo));
    QUERY_CHECK_NULL(pInfo->pUpdated, code, lino, _end, terrno);
  }
  if (!pInfo->pStUpdated) {
    _hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY);
    pInfo->pStUpdated = tSimpleHashInit(64, hashFn);
    QUERY_CHECK_NULL(pInfo->pStUpdated, code, lino, _end, terrno);
  }
  while (1) {
    SSDataBlock* pBlock = NULL;
    code = downstream->fpSet.getNextFn(downstream, &pBlock);
    QUERY_CHECK_CODE(code, lino, _end);

    if (pBlock == NULL) {
      break;
    }

    printSpecDataBlock(pBlock, getStreamOpName(pOperator->operatorType), "recv", GET_TASKID(pTaskInfo));
    setStreamOperatorState(&pInfo->basic, pBlock->info.type);

    if (pBlock->info.type == STREAM_DELETE_DATA || pBlock->info.type == STREAM_DELETE_RESULT) {
      bool add = pInfo->destHasPrimaryKey && IS_NORMAL_COUNT_OP(pOperator);
      code = deleteCountWinState(&pInfo->streamAggSup, pBlock, pInfo->pStUpdated, pInfo->pStDeleted, pInfo->pPkDeleted,
                                 add);
      QUERY_CHECK_CODE(code, lino, _end);
      continue;
    } else if (pBlock->info.type == STREAM_CLEAR) {
      doResetCountWindows(&pInfo->streamAggSup, pBlock);
      continue;
    } else if (pBlock->info.type == STREAM_GET_ALL) {
      pInfo->recvGetAll = true;
      code = getAllSessionWindow(pAggSup->pResultRows, pInfo->pStUpdated);
      QUERY_CHECK_CODE(code, lino, _end);
      continue;
    } else if (pBlock->info.type == STREAM_CREATE_CHILD_TABLE) {
      (*ppRes) = pBlock;
      return code;
    } else if (pBlock->info.type == STREAM_CHECKPOINT) {
      pAggSup->stateStore.streamStateCommit(pAggSup->pState);
      doStreamCountSaveCheckpoint(pOperator);
      code = copyDataBlock(pInfo->pCheckpointRes, pBlock);
      QUERY_CHECK_CODE(code, lino, _end);
      continue;
    } else {
      if (pBlock->info.type != STREAM_NORMAL && pBlock->info.type != STREAM_INVALID) {
        code = TSDB_CODE_QRY_EXECUTOR_INTERNAL_ERROR;
        QUERY_CHECK_CODE(code, lino, _end);
      }
    }

    if (pInfo->scalarSupp.pExprInfo != NULL) {
      SExprSupp* pExprSup = &pInfo->scalarSupp;
      code = projectApplyFunctions(pExprSup->pExprInfo, pBlock, pBlock, pExprSup->pCtx, pExprSup->numOfExprs, NULL);
      QUERY_CHECK_CODE(code, lino, _end);
    }
    // the pDataBlock are always the same one, no need to call this again
    code = setInputDataBlock(pSup, pBlock, TSDB_ORDER_ASC, MAIN_SCAN, true);
    QUERY_CHECK_CODE(code, lino, _end);
    doStreamCountAggImpl(pOperator, pBlock, pInfo->pStUpdated, pInfo->pStDeleted);
    pInfo->twAggSup.maxTs = TMAX(pInfo->twAggSup.maxTs, pBlock->info.window.ekey);
    pInfo->twAggSup.maxTs = TMAX(pInfo->twAggSup.maxTs, pBlock->info.watermark);
  }
  // restore the value
  pOperator->status = OP_RES_TO_RETURN;

  code = closeSessionWindow(pAggSup->pResultRows, &pInfo->twAggSup, pInfo->pStUpdated);
  QUERY_CHECK_CODE(code, lino, _end);

  code = copyUpdateResult(&pInfo->pStUpdated, pInfo->pUpdated, sessionKeyCompareAsc);
  QUERY_CHECK_CODE(code, lino, _end);

  removeSessionDeleteResults(pInfo->pStDeleted, pInfo->pUpdated);
  initGroupResInfoFromArrayList(&pInfo->groupResInfo, pInfo->pUpdated);
  pInfo->pUpdated = NULL;
  code = blockDataEnsureCapacity(pInfo->binfo.pRes, pOperator->resultInfo.capacity);
  QUERY_CHECK_CODE(code, lino, _end);

  if (pInfo->destHasPrimaryKey && IS_NORMAL_COUNT_OP(pOperator)) {
    code = copyDeleteSessionKey(pInfo->pPkDeleted, pInfo->pStDeleted);
    QUERY_CHECK_CODE(code, lino, _end);
  }

  SSDataBlock* opRes = NULL;
  code = buildCountResult(pOperator, &opRes);
  QUERY_CHECK_CODE(code, lino, _end);
  if (opRes) {
    (*ppRes) = opRes;
    return code;
  }

_end:
  if (code != TSDB_CODE_SUCCESS) {
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
    pTaskInfo->code = code;
    T_LONG_JMP(pTaskInfo->env, code);
  }
  setStreamOperatorCompleted(pOperator);
  (*ppRes) = NULL;
  return code;
}

void streamCountReleaseState(SOperatorInfo* pOperator) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SStreamEventAggOperatorInfo* pInfo = pOperator->info;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  int32_t                      resSize = sizeof(TSKEY);
  char*                        pBuff = taosMemoryCalloc(1, resSize);
  QUERY_CHECK_NULL(pBuff, code, lino, _end, terrno);

  memcpy(pBuff, &pInfo->twAggSup.maxTs, sizeof(TSKEY));
  qDebug("===stream=== count window operator relase state. ");
  pInfo->streamAggSup.stateStore.streamStateSaveInfo(pInfo->streamAggSup.pState, STREAM_COUNT_OP_STATE_NAME,
                                                     strlen(STREAM_COUNT_OP_STATE_NAME), pBuff, resSize);
  pInfo->streamAggSup.stateStore.streamStateCommit(pInfo->streamAggSup.pState);
  taosMemoryFreeClear(pBuff);
  SOperatorInfo* downstream = pOperator->pDownstream[0];
  if (downstream->fpSet.releaseStreamStateFn) {
    downstream->fpSet.releaseStreamStateFn(downstream);
  }
_end:
  if (code != TSDB_CODE_SUCCESS) {
    terrno = code;
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
  }
}

void streamCountReloadState(SOperatorInfo* pOperator) {
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SStreamCountAggOperatorInfo* pInfo = pOperator->info;
  SExecTaskInfo*               pTaskInfo = pOperator->pTaskInfo;
  SStreamAggSupporter*         pAggSup = &pInfo->streamAggSup;
  int32_t                      size = 0;
  void*                        pBuf = NULL;

  code = pAggSup->stateStore.streamStateGetInfo(pAggSup->pState, STREAM_COUNT_OP_STATE_NAME,
                                                strlen(STREAM_COUNT_OP_STATE_NAME), &pBuf, &size);
  QUERY_CHECK_CODE(code, lino, _end);

  TSKEY ts = *(TSKEY*)pBuf;
  pInfo->twAggSup.maxTs = TMAX(pInfo->twAggSup.maxTs, ts);
  taosMemoryFree(pBuf);

  SOperatorInfo* downstream = pOperator->pDownstream[0];
  if (downstream->fpSet.reloadStreamStateFn) {
    downstream->fpSet.reloadStreamStateFn(downstream);
  }
  reloadAggSupFromDownStream(downstream, &pInfo->streamAggSup);

_end:
  if (code != TSDB_CODE_SUCCESS) {
    terrno = code;
    qError("%s failed at line %d since %s. task:%s", __func__, lino, tstrerror(code), GET_TASKID(pTaskInfo));
  }
}

int32_t createStreamCountAggOperatorInfo(SOperatorInfo* downstream, SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo,
                                         SReadHandle* pHandle, SOperatorInfo** pOptrInfo) {
  QRY_PARAM_CHECK(pOptrInfo);

  SCountWinodwPhysiNode*       pCountNode = (SCountWinodwPhysiNode*)pPhyNode;
  int32_t                      numOfCols = 0;
  int32_t                      code = TSDB_CODE_SUCCESS;
  int32_t                      lino = 0;
  SStreamCountAggOperatorInfo* pInfo = taosMemoryCalloc(1, sizeof(SStreamCountAggOperatorInfo));
  SOperatorInfo*               pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
  if (pInfo == NULL || pOperator == NULL) {
    code = terrno;
    QUERY_CHECK_CODE(code, lino, _error);
  }

  pOperator->pTaskInfo = pTaskInfo;

  initResultSizeInfo(&pOperator->resultInfo, 4096);
  if (pCountNode->window.pExprs != NULL) {
    int32_t    numOfScalar = 0;
    SExprInfo* pScalarExprInfo = NULL;
    code = createExprInfo(pCountNode->window.pExprs, NULL, &pScalarExprInfo, &numOfScalar);
    QUERY_CHECK_CODE(code, lino, _error);

    code = initExprSupp(&pInfo->scalarSupp, pScalarExprInfo, numOfScalar, &pTaskInfo->storageAPI.functionStore);
    QUERY_CHECK_CODE(code, lino, _error);
  }
  SExprSupp* pExpSup = &pOperator->exprSupp;

  SSDataBlock* pResBlock = createDataBlockFromDescNode(pPhyNode->pOutputDataBlockDesc);
  QUERY_CHECK_NULL(pResBlock, code, lino, _error, terrno);
  pInfo->binfo.pRes = pResBlock;

  SExprInfo* pExprInfo = NULL;
  code = createExprInfo(pCountNode->window.pFuncs, NULL, &pExprInfo, &numOfCols);
  QUERY_CHECK_CODE(code, lino, _error);

  code = initBasicInfoEx(&pInfo->binfo, pExpSup, pExprInfo, numOfCols, pResBlock, &pTaskInfo->storageAPI.functionStore);
  QUERY_CHECK_CODE(code, lino, _error);

  pInfo->twAggSup = (STimeWindowAggSupp){
      .waterMark = pCountNode->window.watermark,
      .calTrigger = pCountNode->window.triggerType,
      .maxTs = INT64_MIN,
      .minTs = INT64_MAX,
      .deleteMark = getDeleteMark(&pCountNode->window, 0),
  };

  pInfo->primaryTsIndex = ((SColumnNode*)pCountNode->window.pTspk)->slotId;
  code = initStreamAggSupporter(&pInfo->streamAggSup, pExpSup, numOfCols, 0, pTaskInfo->streamInfo.pState,
                                sizeof(COUNT_TYPE), 0, &pTaskInfo->storageAPI.stateStore, pHandle, &pInfo->twAggSup,
                                GET_TASKID(pTaskInfo), &pTaskInfo->storageAPI, pInfo->primaryTsIndex,
                                STREAM_STATE_BUFF_SORT, 1);
  QUERY_CHECK_CODE(code, lino, _error);

  pInfo->streamAggSup.windowCount = pCountNode->windowCount;
  pInfo->streamAggSup.windowSliding = pCountNode->windowSliding;

  code = initExecTimeWindowInfo(&pInfo->twAggSup.timeWindowData, &pTaskInfo->window);
  QUERY_CHECK_CODE(code, lino, _error);

  _hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY);
  pInfo->pStDeleted = tSimpleHashInit(64, hashFn);
  QUERY_CHECK_NULL(pInfo->pStDeleted, code, lino, _error, terrno);
  pInfo->pDelIterator = NULL;

  code = createSpecialDataBlock(STREAM_DELETE_RESULT, &pInfo->pDelRes);
  QUERY_CHECK_CODE(code, lino, _error);

  pInfo->ignoreExpiredData = pCountNode->window.igExpired;
  pInfo->ignoreExpiredDataSaved = false;
  pInfo->pUpdated = NULL;
  pInfo->pStUpdated = NULL;
  pInfo->dataVersion = 0;
  pInfo->historyWins = taosArrayInit(4, sizeof(SSessionKey));
  if (!pInfo->historyWins) {
    code = terrno;
    QUERY_CHECK_CODE(code, lino, _error);
  }

  code = createSpecialDataBlock(STREAM_CHECKPOINT, &pInfo->pCheckpointRes);
  QUERY_CHECK_CODE(code, lino, _error);

  pInfo->recvGetAll = false;
  pInfo->pPkDeleted = tSimpleHashInit(64, hashFn);
  QUERY_CHECK_NULL(pInfo->pPkDeleted, code, lino, _error, terrno);
  pInfo->destHasPrimaryKey = pCountNode->window.destHasPrimaryKey;

  pOperator->operatorType = QUERY_NODE_PHYSICAL_PLAN_STREAM_COUNT;
  setOperatorInfo(pOperator, getStreamOpName(pOperator->operatorType), QUERY_NODE_PHYSICAL_PLAN_STREAM_COUNT, true,
                  OP_NOT_OPENED, pInfo, pTaskInfo);
  // for stream
  void*   buff = NULL;
  int32_t len = 0;
  int32_t res =
      pInfo->streamAggSup.stateStore.streamStateGetInfo(pInfo->streamAggSup.pState, STREAM_COUNT_OP_CHECKPOINT_NAME,
                                                        strlen(STREAM_COUNT_OP_CHECKPOINT_NAME), &buff, &len);
  if (res == TSDB_CODE_SUCCESS) {
    code = doStreamCountDecodeOpState(buff, len, pOperator, true);
    QUERY_CHECK_CODE(code, lino, _error);
    taosMemoryFree(buff);
  }
  pInfo->pOperator = pOperator;
  pOperator->fpSet = createOperatorFpSet(optrDummyOpenFn, doStreamCountAggNext, NULL, destroyStreamCountAggOperatorInfo,
                                         optrDefaultBufFn, NULL, optrDefaultGetNextExtFn, NULL);
  setOperatorStreamStateFn(pOperator, streamCountReleaseState, streamCountReloadState);

  code = initStreamBasicInfo(&pInfo->basic, pOperator);
  QUERY_CHECK_CODE(code, lino, _error);

  if (downstream) {
    code = initDownStream(downstream, &pInfo->streamAggSup, pOperator->operatorType, pInfo->primaryTsIndex,
                          &pInfo->twAggSup, &pInfo->basic);
    QUERY_CHECK_CODE(code, lino, _error);

    code = appendDownstream(pOperator, &downstream, 1);
    QUERY_CHECK_CODE(code, lino, _error);
  }

  *pOptrInfo = pOperator;
  return TSDB_CODE_SUCCESS;

_error:
  if (pInfo != NULL) {
    destroyStreamCountAggOperatorInfo(pInfo);
  }

  destroyOperatorAndDownstreams(pOperator, &downstream, 1);
  pTaskInfo->code = code;
  qError("%s failed at line %d since %s", __func__, lino, tstrerror(code));
  return code;
}

taosdata / TDengine / #3615

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