/*
 * 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 "sma.h"

#define RSMA_QTASKINFO_BUFSIZE     (32768)                                               // size
#define RSMA_QTASKINFO_HEAD_LEN    (sizeof(int32_t) + sizeof(int8_t) + sizeof(int64_t))  // len + type + suid
#define RSMA_QTASKEXEC_SMOOTH_SIZE (100)                                                 // cnt
#define RSMA_SUBMIT_BATCH_SIZE     (1024)                                                // cnt
#define RSMA_FETCH_DELAY_MAX       (900000)                                              // ms
#define RSMA_FETCH_ACTIVE_MAX      (1000)                                                // ms
#define RSMA_FETCH_INTERVAL        (5000)                                                // ms

SSmaMgmt smaMgmt = {
    .inited = 0,
    .rsetId = -1,
};

#define TD_QTASKINFO_FNAME_PREFIX "qinf.v"

typedef struct SRSmaQTaskInfoItem SRSmaQTaskInfoItem;
typedef struct SRSmaQTaskInfoIter SRSmaQTaskInfoIter;

static int32_t    tdUidStorePut(STbUidStore *pStore, tb_uid_t suid, tb_uid_t *uid);
static int32_t    tdUpdateTbUidListImpl(SSma *pSma, tb_uid_t *suid, SArray *tbUids, bool isAdd);
static int32_t    tdSetRSmaInfoItemParams(SSma *pSma, SRSmaParam *param, SRSmaStat *pStat, SRSmaInfo *pRSmaInfo,
                                          int8_t idx);
static int32_t    tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t msgSize, int32_t inputType, SRSmaInfo *pInfo,
                                    ERsmaExecType type, int8_t level);
static SRSmaInfo *tdAcquireRSmaInfoBySuid(SSma *pSma, int64_t suid);
static void       tdReleaseRSmaInfo(SSma *pSma, SRSmaInfo *pInfo);
static void       tdFreeRSmaSubmitItems(SArray *pItems);
static int32_t    tdRSmaFetchAllResult(SSma *pSma, SRSmaInfo *pInfo);
static int32_t    tdRSmaExecAndSubmitResult(SSma *pSma, qTaskInfo_t taskInfo, SRSmaInfoItem *pItem, STSchema *pTSchema,
                                            int64_t suid);
static void       tdRSmaFetchTrigger(void *param, void *tmrId);
static int32_t    tdRSmaInfoClone(SSma *pSma, SRSmaInfo *pInfo);
static void       tdRSmaQTaskInfoFree(qTaskInfo_t *taskHandle, int32_t vgId, int32_t level);
static int32_t    tdRSmaQTaskInfoIterInit(SRSmaQTaskInfoIter *pIter, STFile *pTFile);
static int32_t    tdRSmaQTaskInfoIterNextBlock(SRSmaQTaskInfoIter *pIter, bool *isFinish);
static int32_t    tdRSmaQTaskInfoRestore(SSma *pSma, int8_t type, SRSmaQTaskInfoIter *pIter);
static int32_t    tdRSmaQTaskInfoItemRestore(SSma *pSma, const SRSmaQTaskInfoItem *infoItem);
static int32_t    tdRSmaRestoreQTaskInfoInit(SSma *pSma, int64_t *nTables);
static int32_t    tdRSmaRestoreQTaskInfoReload(SSma *pSma, int8_t type, int64_t qTaskFileVer);
static int32_t    tdRSmaRestoreTSDataReload(SSma *pSma);

static SRSmaInfo *tdGetRSmaInfoByItem(SRSmaInfoItem *pItem) {
  // adapt accordingly if definition of SRSmaInfo update
  SRSmaInfo *pResult = NULL;
  ASSERT(pItem->level == TSDB_RETENTION_L1 || pItem->level == TSDB_RETENTION_L2);
  pResult = (SRSmaInfo *)POINTER_SHIFT(pItem, -(sizeof(SRSmaInfoItem) * (pItem->level - 1) + RSMA_INFO_HEAD_LEN));
  ASSERT(pResult->pTSchema->numOfCols > 1);
  return pResult;
}

struct SRSmaQTaskInfoItem {
  int32_t len;
  int8_t  type;
  int64_t suid;
  void   *qTaskInfo;
};

struct SRSmaQTaskInfoIter {
  STFile *pTFile;
  int64_t offset;
  int64_t fsize;
  int32_t nBytes;
  int32_t nAlloc;
  char   *pBuf;
  // ------------
  char   *qBuf;  // for iterator
  int32_t nBufPos;
};

void tdRSmaQTaskInfoGetFileName(int32_t vgId, int64_t version, char *outputName) {
  tdGetVndFileName(vgId, NULL, VNODE_RSMA_DIR, TD_QTASKINFO_FNAME_PREFIX, version, outputName);
}

void tdRSmaQTaskInfoGetFullName(int32_t vgId, int64_t version, const char *path, char *outputName) {
  tdGetVndFileName(vgId, path, VNODE_RSMA_DIR, TD_QTASKINFO_FNAME_PREFIX, version, outputName);
}

static FORCE_INLINE int32_t tdRSmaQTaskInfoContLen(int32_t lenWithHead) {
  return lenWithHead - RSMA_QTASKINFO_HEAD_LEN;
}

static FORCE_INLINE void tdRSmaQTaskInfoIterDestroy(SRSmaQTaskInfoIter *pIter) { taosMemoryFreeClear(pIter->pBuf); }

static void tdRSmaQTaskInfoFree(qTaskInfo_t *taskHandle, int32_t vgId, int32_t level) {
  // Note: free/kill may in RC
  if (!taskHandle || !(*taskHandle)) return;
  qTaskInfo_t otaskHandle = atomic_load_ptr(taskHandle);
  if (otaskHandle && atomic_val_compare_exchange_ptr(taskHandle, otaskHandle, NULL)) {
    smaDebug("vgId:%d, free qTaskInfo_t %p of level %d", vgId, otaskHandle, level);
    qDestroyTask(otaskHandle);
  } else {
    smaDebug("vgId:%d, not free qTaskInfo_t %p of level %d", vgId, otaskHandle, level);
  }
  // TODO: clear files related to qTaskInfo?
}

/**
 * @brief general function to free rsmaInfo
 *
 * @param pSma
 * @param pInfo
 * @param isDeepFree Only stop tmrId and free pTSchema for deep free
 * @return void*
 */
void *tdFreeRSmaInfo(SSma *pSma, SRSmaInfo *pInfo, bool isDeepFree) {
  if (pInfo) {
    for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
      SRSmaInfoItem *pItem = &pInfo->items[i];

      if (isDeepFree && pItem->tmrId) {
        smaDebug("vgId:%d, stop fetch timer %p for table %" PRIi64 " level %d", SMA_VID(pSma), pItem->tmrId,
                 pInfo->suid, i + 1);
        taosTmrStopA(&pItem->tmrId);
      }

      if (isDeepFree && pInfo->taskInfo[i]) {
        tdRSmaQTaskInfoFree(&pInfo->taskInfo[i], SMA_VID(pSma), i + 1);
      } else {
        smaDebug("vgId:%d, table %" PRIi64 " no need to destroy rsma info level %d since empty taskInfo", SMA_VID(pSma),
                 pInfo->suid, i + 1);
      }

      if (pInfo->iTaskInfo[i]) {
        tdRSmaQTaskInfoFree(&pInfo->iTaskInfo[i], SMA_VID(pSma), i + 1);
      } else {
        smaDebug("vgId:%d, table %" PRIi64 " no need to destroy rsma info level %d since empty iTaskInfo",
                 SMA_VID(pSma), pInfo->suid, i + 1);
      }
    }
    if (isDeepFree) {
      taosMemoryFreeClear(pInfo->pTSchema);
    }

    if (isDeepFree) {
      if (pInfo->queue) taosCloseQueue(pInfo->queue);
      if (pInfo->qall) taosFreeQall(pInfo->qall);
      if (pInfo->iQueue) taosCloseQueue(pInfo->iQueue);
      if (pInfo->iQall) taosFreeQall(pInfo->iQall);
      pInfo->queue = NULL;
      pInfo->qall = NULL;
      pInfo->iQueue = NULL;
      pInfo->iQall = NULL;
    }

    taosMemoryFree(pInfo);
  }

  return NULL;
}

static FORCE_INLINE int32_t tdUidStoreInit(STbUidStore **pStore) {
  ASSERT(*pStore == NULL);
  *pStore = taosMemoryCalloc(1, sizeof(STbUidStore));
  if (*pStore == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    return TSDB_CODE_FAILED;
  }
  return TSDB_CODE_SUCCESS;
}

static int32_t tdUpdateTbUidListImpl(SSma *pSma, tb_uid_t *suid, SArray *tbUids, bool isAdd) {
  SRSmaInfo *pRSmaInfo = NULL;

  if (!suid || !tbUids) {
    terrno = TSDB_CODE_INVALID_PTR;
    smaError("vgId:%d, failed to get rsma info for uid:%" PRIi64 " since %s", SMA_VID(pSma), *suid, terrstr());
    return TSDB_CODE_FAILED;
  }

  if (!taosArrayGetSize(tbUids)) {
    smaDebug("vgId:%d, no need to update tbUidList for suid:%" PRIi64 " since Empty tbUids", SMA_VID(pSma), *suid);
    return TSDB_CODE_SUCCESS;
  }

  pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, *suid);

  if (!pRSmaInfo) {
    smaError("vgId:%d, failed to get rsma info for uid:%" PRIi64, SMA_VID(pSma), *suid);
    terrno = TSDB_CODE_RSMA_INVALID_STAT;
    return TSDB_CODE_FAILED;
  }

  for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
    if (pRSmaInfo->taskInfo[i]) {
      if (((terrno = qUpdateQualifiedTableId(pRSmaInfo->taskInfo[i], tbUids, isAdd)) < 0)) {
        tdReleaseRSmaInfo(pSma, pRSmaInfo);
        smaError("vgId:%d, update tbUidList failed for uid:%" PRIi64 " level %d since %s", SMA_VID(pSma), *suid, i,
                 terrstr());
        return TSDB_CODE_FAILED;
      } else {
        smaDebug("vgId:%d, update tbUidList succeed for qTaskInfo:%p with suid:%" PRIi64 " uid:%" PRIi64 " level %d",
                 SMA_VID(pSma), pRSmaInfo->taskInfo[0], *suid, *(int64_t *)taosArrayGet(tbUids, 0), i);
      }
    }
  }

  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  return TSDB_CODE_SUCCESS;
}

int32_t tdUpdateTbUidList(SSma *pSma, STbUidStore *pStore, bool isAdd) {
  if (!pStore || (taosArrayGetSize(pStore->tbUids) == 0)) {
    return TSDB_CODE_SUCCESS;
  }

  if (tdUpdateTbUidListImpl(pSma, &pStore->suid, pStore->tbUids, isAdd) != TSDB_CODE_SUCCESS) {
    return TSDB_CODE_FAILED;
  }

  void *pIter = taosHashIterate(pStore->uidHash, NULL);
  while (pIter) {
    tb_uid_t *pTbSuid = (tb_uid_t *)taosHashGetKey(pIter, NULL);
    SArray   *pTbUids = *(SArray **)pIter;

    if (tdUpdateTbUidListImpl(pSma, pTbSuid, pTbUids, isAdd) != TSDB_CODE_SUCCESS) {
      taosHashCancelIterate(pStore->uidHash, pIter);
      return TSDB_CODE_FAILED;
    }

    pIter = taosHashIterate(pStore->uidHash, pIter);
  }
  return TSDB_CODE_SUCCESS;
}

/**
 * @brief fetch suid/uids when create child tables of rollup SMA
 *
 * @param pTsdb
 * @param ppStore
 * @param suid
 * @param uid
 * @return int32_t
 */
int32_t tdFetchTbUidList(SSma *pSma, STbUidStore **ppStore, tb_uid_t suid, tb_uid_t uid) {
  SSmaEnv *pEnv = SMA_RSMA_ENV(pSma);

  // only applicable to rollup SMA ctables
  if (!pEnv) {
    return TSDB_CODE_SUCCESS;
  }

  SRSmaStat *pStat = (SRSmaStat *)SMA_ENV_STAT(pEnv);
  SHashObj  *infoHash = NULL;
  if (!pStat || !(infoHash = RSMA_INFO_HASH(pStat))) {
    terrno = TSDB_CODE_RSMA_INVALID_STAT;
    return TSDB_CODE_FAILED;
  }

  // info cached when create rsma stable and return directly for non-rsma ctables
  if (!taosHashGet(infoHash, &suid, sizeof(tb_uid_t))) {
    return TSDB_CODE_SUCCESS;
  }

  ASSERT(ppStore != NULL);

  if (!(*ppStore)) {
    if (tdUidStoreInit(ppStore) < 0) {
      return TSDB_CODE_FAILED;
    }
  }

  if (tdUidStorePut(*ppStore, suid, &uid) < 0) {
    *ppStore = tdUidStoreFree(*ppStore);
    return TSDB_CODE_FAILED;
  }

  return TSDB_CODE_SUCCESS;
}

static int32_t tdSetRSmaInfoItemParams(SSma *pSma, SRSmaParam *param, SRSmaStat *pStat, SRSmaInfo *pRSmaInfo,
                                       int8_t idx) {
  if ((param->qmsgLen > 0) && param->qmsg[idx]) {
    SRetention *pRetention = SMA_RETENTION(pSma);
    STsdbCfg   *pTsdbCfg = SMA_TSDB_CFG(pSma);
    SVnode     *pVnode = pSma->pVnode;
    SReadHandle handle = {
        .meta = pVnode->pMeta,
        .vnode = pVnode,
        .initTqReader = 1,
    };

    pRSmaInfo->taskInfo[idx] = qCreateStreamExecTaskInfo(param->qmsg[idx], &handle);
    if (!pRSmaInfo->taskInfo[idx]) {
      terrno = TSDB_CODE_RSMA_QTASKINFO_CREATE;
      return TSDB_CODE_FAILED;
    }
    SRSmaInfoItem *pItem = &(pRSmaInfo->items[idx]);
    pItem->triggerStat = TASK_TRIGGER_STAT_INACTIVE;
    if (param->maxdelay[idx] < TSDB_MIN_ROLLUP_MAX_DELAY) {
      int64_t msInterval =
          convertTimeFromPrecisionToUnit(pRetention[idx + 1].freq, pTsdbCfg->precision, TIME_UNIT_MILLISECOND);
      pItem->maxDelay = (int32_t)msInterval;
    } else {
      pItem->maxDelay = (int32_t)param->maxdelay[idx];
    }
    if (pItem->maxDelay > TSDB_MAX_ROLLUP_MAX_DELAY) {
      pItem->maxDelay = TSDB_MAX_ROLLUP_MAX_DELAY;
    }

    pItem->level = idx == 0 ? TSDB_RETENTION_L1 : TSDB_RETENTION_L2;
    ASSERT(pItem->level > 0);

    SRSmaRef rsmaRef = {.refId = pStat->refId, .suid = pRSmaInfo->suid};
    taosHashPut(smaMgmt.refHash, &pItem, POINTER_BYTES, &rsmaRef, sizeof(rsmaRef));

    taosTmrReset(tdRSmaFetchTrigger, pItem->maxDelay, pItem, smaMgmt.tmrHandle, &pItem->tmrId);

    smaInfo("vgId:%d, item:%p table:%" PRIi64 " level:%" PRIi8 " maxdelay:%" PRIi64 " watermark:%" PRIi64
            ", finally maxdelay:%" PRIi32,
            TD_VID(pVnode), pItem, pRSmaInfo->suid, idx + 1, param->maxdelay[idx], param->watermark[idx],
            pItem->maxDelay);
  }
  return TSDB_CODE_SUCCESS;
}

/**
 * @brief for rsam create or restore
 *
 * @param pSma
 * @param param
 * @param suid
 * @param tbName
 * @return int32_t
 */
int32_t tdRSmaProcessCreateImpl(SSma *pSma, SRSmaParam *param, int64_t suid, const char *tbName) {
  if ((param->qmsgLen[0] == 0) && (param->qmsgLen[1] == 0)) {
    smaDebug("vgId:%d, no qmsg1/qmsg2 for rollup table %s %" PRIi64, SMA_VID(pSma), tbName, suid);
    return TSDB_CODE_SUCCESS;
  }

  if (tdCheckAndInitSmaEnv(pSma, TSDB_SMA_TYPE_ROLLUP) != TSDB_CODE_SUCCESS) {
    terrno = TSDB_CODE_TDB_INIT_FAILED;
    return TSDB_CODE_FAILED;
  }

  SSmaEnv   *pEnv = SMA_RSMA_ENV(pSma);
  SRSmaStat *pStat = (SRSmaStat *)SMA_ENV_STAT(pEnv);
  SRSmaInfo *pRSmaInfo = NULL;

  pRSmaInfo = taosHashGet(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t));
  if (pRSmaInfo) {
    // TODO: free original pRSmaInfo if exists abnormally
    tdFreeRSmaInfo(pSma, *(SRSmaInfo **)pRSmaInfo, true);
    if (taosHashRemove(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t)) < 0) {
      terrno = TSDB_CODE_RSMA_REMOVE_EXISTS;
      goto _err;
    }
    smaWarn("vgId:%d, remove the rsma info already exists for table %s, %" PRIi64, SMA_VID(pSma), tbName, suid);
  }

  // from write queue: single thead
  pRSmaInfo = (SRSmaInfo *)taosMemoryCalloc(1, sizeof(SRSmaInfo));
  if (!pRSmaInfo) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    return TSDB_CODE_FAILED;
  }

  STSchema *pTSchema = metaGetTbTSchema(SMA_META(pSma), suid, -1);
  if (!pTSchema) {
    terrno = TSDB_CODE_TDB_IVD_TB_SCHEMA_VERSION;
    goto _err;
  }
  pRSmaInfo->pSma = pSma;
  pRSmaInfo->pTSchema = pTSchema;
  pRSmaInfo->suid = suid;
  T_REF_INIT_VAL(pRSmaInfo, 1);
  if (!(pRSmaInfo->queue = taosOpenQueue())) {
    goto _err;
  }

  if (!(pRSmaInfo->qall = taosAllocateQall())) {
    goto _err;
  }
  if (!(pRSmaInfo->iQueue = taosOpenQueue())) {
    goto _err;
  }
  if (!(pRSmaInfo->iQall = taosAllocateQall())) {
    goto _err;
  }

  if (tdSetRSmaInfoItemParams(pSma, param, pStat, pRSmaInfo, 0) < 0) {
    goto _err;
  }

  if (tdSetRSmaInfoItemParams(pSma, param, pStat, pRSmaInfo, 1) < 0) {
    goto _err;
  }

  if (taosHashPut(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t), &pRSmaInfo, sizeof(pRSmaInfo)) < 0) {
    goto _err;
  }

  smaDebug("vgId:%d, register rsma info succeed for table %" PRIi64, SMA_VID(pSma), suid);

  return TSDB_CODE_SUCCESS;
_err:
  tdFreeRSmaInfo(pSma, pRSmaInfo, true);
  return TSDB_CODE_FAILED;
}

/**
 * @brief Check and init qTaskInfo_t, only applicable to stable with SRSmaParam currently
 *
 * @param pSma
 * @param pReq
 * @return int32_t
 */
int32_t tdProcessRSmaCreate(SSma *pSma, SVCreateStbReq *pReq) {
  SVnode *pVnode = pSma->pVnode;
  if (!pReq->rollup) {
    smaTrace("vgId:%d, not create rsma for stable %s %" PRIi64 " since no rollup in req", TD_VID(pVnode), pReq->name,
             pReq->suid);
    return TSDB_CODE_SUCCESS;
  }

  if (!VND_IS_RSMA(pVnode)) {
    smaTrace("vgId:%d, not create rsma for stable %s %" PRIi64 " since vnd is not rsma", TD_VID(pVnode), pReq->name,
             pReq->suid);
    return TSDB_CODE_SUCCESS;
  }

  return tdRSmaProcessCreateImpl(pSma, &pReq->rsmaParam, pReq->suid, pReq->name);
}

/**
 * @brief drop cache for stb
 *
 * @param pSma
 * @param pReq
 * @return int32_t
 */
int32_t tdProcessRSmaDrop(SSma *pSma, SVDropStbReq *pReq) {
  SVnode *pVnode = pSma->pVnode;
  if (!VND_IS_RSMA(pVnode)) {
    smaTrace("vgId:%d, not drop rsma for stable %s %" PRIi64 " since vnd is not rsma", TD_VID(pVnode), pReq->name,
             pReq->suid);
    return TSDB_CODE_SUCCESS;
  }

  SSmaEnv *pSmaEnv = SMA_RSMA_ENV(pSma);
  if (!pSmaEnv) {
    return TSDB_CODE_SUCCESS;
  }

  SRSmaStat *pRSmaStat = (SRSmaStat *)SMA_ENV_STAT(pSmaEnv);

  SRSmaInfo *pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, pReq->suid);

  if (!pRSmaInfo) {
    smaWarn("vgId:%d, drop rsma for stable %s %" PRIi64 " failed no rsma in hash", TD_VID(pVnode), pReq->name,
            pReq->suid);
    return TSDB_CODE_SUCCESS;
  }

  // set del flag for data in mem
  RSMA_INFO_SET_DEL(pRSmaInfo);
  tdUnRefRSmaInfo(pSma, pRSmaInfo);

  tdReleaseRSmaInfo(pSma, pRSmaInfo);

  // save to file
  // TODO
  smaDebug("vgId:%d, drop rsma for table %" PRIi64 " succeed", TD_VID(pVnode), pReq->suid);
  return TSDB_CODE_SUCCESS;
}

/**
 * @brief store suid/[uids], prefer to use array and then hash
 *
 * @param pStore
 * @param suid
 * @param uid
 * @return int32_t
 */
static int32_t tdUidStorePut(STbUidStore *pStore, tb_uid_t suid, tb_uid_t *uid) {
  // prefer to store suid/uids in array
  if ((suid == pStore->suid) || (pStore->suid == 0)) {
    if (pStore->suid == 0) {
      pStore->suid = suid;
    }
    if (uid) {
      if (!pStore->tbUids) {
        if (!(pStore->tbUids = taosArrayInit(1, sizeof(tb_uid_t)))) {
          terrno = TSDB_CODE_OUT_OF_MEMORY;
          return TSDB_CODE_FAILED;
        }
      }
      if (!taosArrayPush(pStore->tbUids, uid)) {
        return TSDB_CODE_FAILED;
      }
    }
  } else {
    // store other suid/uids in hash when multiple stable/table included in 1 batch of request
    if (!pStore->uidHash) {
      pStore->uidHash = taosHashInit(4, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), false, HASH_ENTRY_LOCK);
      if (!pStore->uidHash) {
        return TSDB_CODE_FAILED;
      }
    }
    if (uid) {
      SArray *uidArray = taosHashGet(pStore->uidHash, &suid, sizeof(tb_uid_t));
      if (uidArray && ((uidArray = *(SArray **)uidArray))) {
        taosArrayPush(uidArray, uid);
      } else {
        SArray *pUidArray = taosArrayInit(1, sizeof(tb_uid_t));
        if (!pUidArray) {
          terrno = TSDB_CODE_OUT_OF_MEMORY;
          return TSDB_CODE_FAILED;
        }
        if (!taosArrayPush(pUidArray, uid)) {
          terrno = TSDB_CODE_OUT_OF_MEMORY;
          return TSDB_CODE_FAILED;
        }
        if (taosHashPut(pStore->uidHash, &suid, sizeof(suid), &pUidArray, sizeof(pUidArray)) < 0) {
          return TSDB_CODE_FAILED;
        }
      }
    } else {
      if (taosHashPut(pStore->uidHash, &suid, sizeof(suid), NULL, 0) < 0) {
        return TSDB_CODE_FAILED;
      }
    }
  }
  return TSDB_CODE_SUCCESS;
}

void tdUidStoreDestory(STbUidStore *pStore) {
  if (pStore) {
    if (pStore->uidHash) {
      if (pStore->tbUids) {
        // When pStore->tbUids not NULL, the pStore->uidHash has k/v; otherwise pStore->uidHash only has keys.
        void *pIter = taosHashIterate(pStore->uidHash, NULL);
        while (pIter) {
          SArray *arr = *(SArray **)pIter;
          taosArrayDestroy(arr);
          pIter = taosHashIterate(pStore->uidHash, pIter);
        }
      }
      taosHashCleanup(pStore->uidHash);
    }
    taosArrayDestroy(pStore->tbUids);
  }
}

void *tdUidStoreFree(STbUidStore *pStore) {
  if (pStore) {
    tdUidStoreDestory(pStore);
    taosMemoryFree(pStore);
  }
  return NULL;
}

/**
 * @brief The SubmitReq for rsma L2/L3 is inserted by tsdbInsertData method directly while not by WriteQ, as the queue
 * would be freed when close Vnode, thus lock should be used if with race condition.
 * @param pTsdb
 * @param version
 * @param pReq
 * @return int32_t
 */
static int32_t tdProcessSubmitReq(STsdb *pTsdb, int64_t version, void *pReq) {
  if (!pReq) {
    terrno = TSDB_CODE_INVALID_PTR;
    return TSDB_CODE_FAILED;
  }

  SSubmitReq *pSubmitReq = (SSubmitReq *)pReq;
  // TODO: spin lock for race conditiond
  if (tsdbInsertData(pTsdb, version, pSubmitReq, NULL) < 0) {
    return TSDB_CODE_FAILED;
  }

  return TSDB_CODE_SUCCESS;
}

static int32_t tdFetchSubmitReqSuids(SSubmitReq *pMsg, STbUidStore *pStore) {
  SSubmitMsgIter msgIter = {0};
  SSubmitBlk    *pBlock = NULL;
  SSubmitBlkIter blkIter = {0};
  STSRow        *row = NULL;

  terrno = TSDB_CODE_SUCCESS;

  if (tInitSubmitMsgIter(pMsg, &msgIter) < 0) {
    return -1;
  }
  while (true) {
    if (tGetSubmitMsgNext(&msgIter, &pBlock) < 0) {
      return -1;
    }

    if (!pBlock) break;
    tdUidStorePut(pStore, msgIter.suid, NULL);
  }

  if (terrno != TSDB_CODE_SUCCESS) {
    return -1;
  }
  return 0;
}

/**
 * @brief retention of rsma1/rsma2
 *
 * @param pSma
 * @param now
 * @return int32_t
 */
int32_t smaDoRetention(SSma *pSma, int64_t now) {
  int32_t code = TSDB_CODE_SUCCESS;
  if (!VND_IS_RSMA(pSma->pVnode)) {
    return code;
  }

  for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
    if (pSma->pRSmaTsdb[i]) {
      code = tsdbDoRetention(pSma->pRSmaTsdb[i], now);
      if (code) goto _end;
    }
  }

_end:
  return code;
}

static int32_t tdRSmaExecAndSubmitResult(SSma *pSma, qTaskInfo_t taskInfo, SRSmaInfoItem *pItem, STSchema *pTSchema,
                                         int64_t suid) {
  SArray *pResList = taosArrayInit(1, POINTER_BYTES);
  if (pResList == NULL) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    goto _err;
  }

  while (1) {
    uint64_t ts;
    int32_t  code = qExecTaskOpt(taskInfo, pResList, &ts);
    if (code < 0) {
      if (code == TSDB_CODE_QRY_IN_EXEC) {
        break;
      } else {
        smaError("vgId:%d, qExecTask for rsma table %" PRIi64 " level %" PRIi8 " failed since %s", SMA_VID(pSma), suid,
                 pItem->level, terrstr(code));
        goto _err;
      }
    }

    if (taosArrayGetSize(pResList) == 0) {
      if (terrno == 0) {
        // smaDebug("vgId:%d, no rsma level %" PRIi8 " data fetched yet", SMA_VID(pSma), pItem->level);
      } else {
        smaDebug("vgId:%d, no rsma level %" PRIi8 " data fetched since %s", SMA_VID(pSma), pItem->level, terrstr());
        goto _err;
      }

      break;
    } else {
      smaDebug("vgId:%d, rsma level %" PRIi8 " data fetched", SMA_VID(pSma), pItem->level);
    }
#if 0
    char flag[10] = {0};
    snprintf(flag, 10, "level %" PRIi8, pItem->level);
    blockDebugShowDataBlocks(pResList, flag);
#endif
    for (int32_t i = 0; i < taosArrayGetSize(pResList); ++i) {
      SSDataBlock *output = taosArrayGetP(pResList, i);
      STsdb       *sinkTsdb = (pItem->level == TSDB_RETENTION_L1 ? pSma->pRSmaTsdb[0] : pSma->pRSmaTsdb[1]);
      SSubmitReq  *pReq = NULL;

      // TODO: the schema update should be handled later(TD-17965)
      if (buildSubmitReqFromDataBlock(&pReq, output, pTSchema, SMA_VID(pSma), suid) < 0) {
        smaError("vgId:%d, build submit req for rsma table %" PRIi64 " level %" PRIi8 " failed since %s", SMA_VID(pSma),
                 suid, pItem->level, terrstr());
        goto _err;
      }

      if (pReq && tdProcessSubmitReq(sinkTsdb, output->info.version, pReq) < 0) {
        taosMemoryFreeClear(pReq);
        smaError("vgId:%d, process submit req for rsma table %" PRIi64 " level %" PRIi8 " failed since %s",
                 SMA_VID(pSma), suid, pItem->level, terrstr());
        goto _err;
      }

      smaDebug("vgId:%d, process submit req for rsma table %" PRIi64 " level %" PRIi8 " ver %" PRIi64 " len %" PRIu32,
               SMA_VID(pSma), suid, pItem->level, output->info.version, htonl(pReq->header.contLen));

      taosMemoryFreeClear(pReq);
    }
  }

  taosArrayDestroy(pResList);
  return TSDB_CODE_SUCCESS;

_err:
  taosArrayDestroy(pResList);
  return TSDB_CODE_FAILED;
}

/**
 * @brief Copy msg to rsmaQueueBuffer for batch process
 *
 * @param pSma
 * @param pMsg
 * @param inputType
 * @param pInfo
 * @param suid
 * @return int32_t
 */
static int32_t tdExecuteRSmaImplAsync(SSma *pSma, const void *pMsg, int32_t inputType, SRSmaInfo *pInfo,
                                      tb_uid_t suid) {
  const SSubmitReq *pReq = (const SSubmitReq *)pMsg;

  void *qItem = taosAllocateQitem(pReq->header.contLen, DEF_QITEM);
  if (!qItem) {
    return TSDB_CODE_FAILED;
  }

  memcpy(qItem, pMsg, pReq->header.contLen);

  taosWriteQitem(pInfo->queue, qItem);

  pInfo->lastRecv = taosGetTimestampMs();

  SRSmaStat *pRSmaStat = SMA_RSMA_STAT(pSma);

  int64_t nItems = atomic_fetch_add_64(&pRSmaStat->nBufItems, 1);

  if (atomic_load_8(&pInfo->assigned) == 0) {
    tsem_post(&(pRSmaStat->notEmpty));
  }

  // smoothing consume
  int32_t n = nItems / RSMA_QTASKEXEC_SMOOTH_SIZE;
  if (n > 1) {
    if (n > 10) {
      n = 10;
    }
    taosMsleep(n << 3);
    if (n > 5) {
      smaWarn("vgId:%d, pInfo->queue itemSize:%d, memSize:%" PRIi64 ", sleep %d ms", SMA_VID(pSma),
              taosQueueItemSize(pInfo->queue), taosQueueMemorySize(pInfo->queue), n << 3);
    }
  }

  return TSDB_CODE_SUCCESS;
}

static int32_t tdRsmaPrintSubmitReq(SSma *pSma, SSubmitReq *pReq) {
  SSubmitMsgIter msgIter = {0};
  SSubmitBlkIter blkIter = {0};
  STSRow        *row = NULL;
  if (tInitSubmitMsgIter(pReq, &msgIter) < 0) return -1;
  while (true) {
    SSubmitBlk *pBlock = NULL;
    if (tGetSubmitMsgNext(&msgIter, &pBlock) < 0) return -1;
    if (pBlock == NULL) break;
    tInitSubmitBlkIter(&msgIter, pBlock, &blkIter);
    while ((row = tGetSubmitBlkNext(&blkIter)) != NULL) {
      smaDebug("vgId:%d, numOfRows:%d, suid:%" PRIi64 ", uid:%" PRIi64 ", version:%" PRIi64 ", ts:%" PRIi64,
               SMA_VID(pSma), msgIter.numOfRows, msgIter.suid, msgIter.uid, pReq->version, row->ts);
    }
  }
  return 0;
}

/**
 * @brief sync mode
 *
 * @param pSma
 * @param pMsg
 * @param msgSize
 * @param inputType
 * @param pInfo
 * @param type
 * @param level
 * @return int32_t
 */
static int32_t tdExecuteRSmaImpl(SSma *pSma, const void *pMsg, int32_t msgSize, int32_t inputType, SRSmaInfo *pInfo,
                                 ERsmaExecType type, int8_t level) {
  int32_t idx = level - 1;

  void *qTaskInfo = (type == RSMA_EXEC_COMMIT) ? RSMA_INFO_IQTASK(pInfo, idx) : RSMA_INFO_QTASK(pInfo, idx);
  if (!qTaskInfo) {
    smaDebug("vgId:%d, no qTaskInfo to execute rsma %" PRIi8 " task for suid:%" PRIu64, SMA_VID(pSma), level,
             pInfo->suid);
    return TSDB_CODE_SUCCESS;
  }
  if (!pInfo->pTSchema) {
    smaWarn("vgId:%d, no schema to execute rsma %" PRIi8 " task for suid:%" PRIu64, SMA_VID(pSma), level, pInfo->suid);
    return TSDB_CODE_FAILED;
  }

  smaDebug("vgId:%d, execute rsma %" PRIi8 " task for qTaskInfo:%p suid:%" PRIu64, SMA_VID(pSma), level,
           RSMA_INFO_QTASK(pInfo, idx), pInfo->suid);

#if 0
  for (int32_t i = 0; i < msgSize; ++i) {
    SSubmitReq *pReq = *(SSubmitReq **)((char *)pMsg + i * sizeof(void *));
    smaDebug("vgId:%d, [%d][%d] version %" PRIi64, SMA_VID(pSma), msgSize, i, pReq->version);
    tdRsmaPrintSubmitReq(pSma, pReq);
  }
#endif
  if (qSetMultiStreamInput(qTaskInfo, pMsg, msgSize, inputType) < 0) {
    smaError("vgId:%d, rsma %" PRIi8 " qSetStreamInput failed since %s", SMA_VID(pSma), level, tstrerror(terrno));
    return TSDB_CODE_FAILED;
  }

  SRSmaInfoItem *pItem = RSMA_INFO_ITEM(pInfo, idx);
  tdRSmaExecAndSubmitResult(pSma, qTaskInfo, pItem, pInfo->pTSchema, pInfo->suid);

  return TSDB_CODE_SUCCESS;
}

static int32_t tdCloneQTaskInfo(SSma *pSma, qTaskInfo_t dstTaskInfo, qTaskInfo_t srcTaskInfo, SRSmaParam *param,
                                tb_uid_t suid, int8_t idx) {
  SVnode *pVnode = pSma->pVnode;
  char   *pOutput = NULL;
  int32_t len = 0;

  if ((terrno = qSerializeTaskStatus(srcTaskInfo, &pOutput, &len)) < 0) {
    smaError("vgId:%d, rsma clone, table %" PRIi64 " serialize qTaskInfo failed since %s", TD_VID(pVnode), suid,
             terrstr());
    goto _err;
  }

  SReadHandle handle = {
      .meta = pVnode->pMeta,
      .vnode = pVnode,
      .initTqReader = 1,
  };
  ASSERT(!dstTaskInfo);
  dstTaskInfo = qCreateStreamExecTaskInfo(param->qmsg[idx], &handle);
  if (!dstTaskInfo) {
    terrno = TSDB_CODE_RSMA_QTASKINFO_CREATE;
    goto _err;
  }

  if (qDeserializeTaskStatus(dstTaskInfo, pOutput, len) < 0) {
    smaError("vgId:%d, rsma clone, restore rsma task for table:%" PRIi64 " failed since %s", TD_VID(pVnode), suid,
             terrstr());
    goto _err;
  }

  smaDebug("vgId:%d, rsma clone, restore rsma task for table:%" PRIi64 " succeed", TD_VID(pVnode), suid);

  taosMemoryFreeClear(pOutput);
  return TSDB_CODE_SUCCESS;
_err:
  taosMemoryFreeClear(pOutput);
  tdRSmaQTaskInfoFree(dstTaskInfo, TD_VID(pVnode), idx + 1);
  smaError("vgId:%d, rsma clone, restore rsma task for table:%" PRIi64 " failed since %s", TD_VID(pVnode), suid,
           terrstr());
  return TSDB_CODE_FAILED;
}

/**
 * @brief Clone qTaskInfo of SRSmaInfo
 *
 * @param pSma
 * @param pInfo
 * @return int32_t
 */
static int32_t tdRSmaInfoClone(SSma *pSma, SRSmaInfo *pInfo) {
  SRSmaParam *param = NULL;
  if (!pInfo) {
    return TSDB_CODE_SUCCESS;
  }

  SMetaReader mr = {0};
  metaReaderInit(&mr, SMA_META(pSma), 0);
  smaDebug("vgId:%d, rsma clone qTaskInfo for suid:%" PRIi64, SMA_VID(pSma), pInfo->suid);
  if (metaGetTableEntryByUid(&mr, pInfo->suid) < 0) {
    smaError("vgId:%d, rsma clone, failed to get table meta for %" PRIi64 " since %s", SMA_VID(pSma), pInfo->suid,
             terrstr());
    goto _err;
  }
  ASSERT(mr.me.type == TSDB_SUPER_TABLE);
  ASSERT(mr.me.uid == pInfo->suid);
  if (TABLE_IS_ROLLUP(mr.me.flags)) {
    param = &mr.me.stbEntry.rsmaParam;
    for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
      if (!pInfo->iTaskInfo[i]) {
        continue;
      }
      if (tdCloneQTaskInfo(pSma, pInfo->taskInfo[i], pInfo->iTaskInfo[i], param, pInfo->suid, i) < 0) {
        goto _err;
      }
    }
    smaDebug("vgId:%d, rsma clone env success for %" PRIi64, SMA_VID(pSma), pInfo->suid);
  } else {
    terrno = TSDB_CODE_RSMA_INVALID_SCHEMA;
    goto _err;
  }

  metaReaderClear(&mr);
  return TSDB_CODE_SUCCESS;
_err:
  metaReaderClear(&mr);
  smaError("vgId:%d, rsma clone env failed for %" PRIi64 " since %s", SMA_VID(pSma), pInfo->suid, terrstr());
  return TSDB_CODE_FAILED;
}

/**
 * @brief During async commit, the SRSmaInfo object would be COW from iRSmaInfoHash and write lock should be applied.
 *
 * @param pSma
 * @param suid
 * @return SRSmaInfo*
 */
static SRSmaInfo *tdAcquireRSmaInfoBySuid(SSma *pSma, int64_t suid) {
  SSmaEnv   *pEnv = SMA_RSMA_ENV(pSma);
  SRSmaStat *pStat = NULL;
  SRSmaInfo *pRSmaInfo = NULL;

  if (!pEnv) {
    terrno = TSDB_CODE_RSMA_INVALID_ENV;
    return NULL;
  }

  pStat = (SRSmaStat *)SMA_ENV_STAT(pEnv);
  if (!pStat || !RSMA_INFO_HASH(pStat)) {
    terrno = TSDB_CODE_RSMA_INVALID_STAT;
    return NULL;
  }

  // taosRLockLatch(SMA_ENV_LOCK(pEnv));
  pRSmaInfo = taosHashGet(RSMA_INFO_HASH(pStat), &suid, sizeof(tb_uid_t));
  if (pRSmaInfo && (pRSmaInfo = *(SRSmaInfo **)pRSmaInfo)) {
    if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
      // taosRUnLockLatch(SMA_ENV_LOCK(pEnv));
      return NULL;
    }
    if (!pRSmaInfo->taskInfo[0]) {
      if (tdRSmaInfoClone(pSma, pRSmaInfo) < 0) {
        // taosRUnLockLatch(SMA_ENV_LOCK(pEnv));
        return NULL;
      }
    }
    tdRefRSmaInfo(pSma, pRSmaInfo);
    // taosRUnLockLatch(SMA_ENV_LOCK(pEnv));
    ASSERT(pRSmaInfo->suid == suid);
    return pRSmaInfo;
  }
  // taosRUnLockLatch(SMA_ENV_LOCK(pEnv));

  return NULL;
}

static FORCE_INLINE void tdReleaseRSmaInfo(SSma *pSma, SRSmaInfo *pInfo) {
  if (pInfo) {
    tdUnRefRSmaInfo(pSma, pInfo);
  }
}

/**
 * @brief async mode
 *
 * @param pSma
 * @param pMsg
 * @param inputType
 * @param suid
 * @return int32_t
 */
static int32_t tdExecuteRSmaAsync(SSma *pSma, const void *pMsg, int32_t inputType, tb_uid_t suid) {
  SRSmaInfo *pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, suid);
  if (!pRSmaInfo) {
    smaDebug("vgId:%d, execute rsma, no rsma info for suid:%" PRIu64, SMA_VID(pSma), suid);
    return TSDB_CODE_SUCCESS;
  }

  if (inputType == STREAM_INPUT__DATA_SUBMIT) {
    if (tdExecuteRSmaImplAsync(pSma, pMsg, inputType, pRSmaInfo, suid) < 0) {
      tdReleaseRSmaInfo(pSma, pRSmaInfo);
      return TSDB_CODE_FAILED;
    }
    if (smaMgmt.tmrHandle) {
      SRSmaInfoItem *pItem = RSMA_INFO_ITEM(pRSmaInfo, 0);
      if (pItem->level > 0) {
        atomic_store_8(&pItem->triggerStat, TASK_TRIGGER_STAT_ACTIVE);
      }
      pItem = RSMA_INFO_ITEM(pRSmaInfo, 1);
      if (pItem->level > 0) {
        atomic_store_8(&pItem->triggerStat, TASK_TRIGGER_STAT_ACTIVE);
      }
    }
  } else {
    ASSERT(0);
  }

  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  return TSDB_CODE_SUCCESS;
}

int32_t tdProcessRSmaSubmit(SSma *pSma, void *pMsg, int32_t inputType) {
  SSmaEnv *pEnv = SMA_RSMA_ENV(pSma);
  if (!pEnv) {
    // only applicable when rsma env exists
    return TSDB_CODE_SUCCESS;
  }
  STbUidStore uidStore = {0};
  SRetention *pRetention = SMA_RETENTION(pSma);
  if (!RETENTION_VALID(pRetention + 1)) {
    // return directly if retention level 1 is invalid
    return TSDB_CODE_SUCCESS;
  }

  if (inputType == STREAM_INPUT__DATA_SUBMIT) {
    if (tdFetchSubmitReqSuids(pMsg, &uidStore) < 0) {
      goto _err;
    }

    if (uidStore.suid != 0) {
      if (tdExecuteRSmaAsync(pSma, pMsg, inputType, uidStore.suid) < 0) {
        goto _err;
      }

      void *pIter = NULL;
      while ((pIter = taosHashIterate(uidStore.uidHash, pIter))) {
        tb_uid_t *pTbSuid = (tb_uid_t *)taosHashGetKey(pIter, NULL);
        if (tdExecuteRSmaAsync(pSma, pMsg, inputType, *pTbSuid) < 0) {
          goto _err;
        }
      }
    }
  }
  tdUidStoreDestory(&uidStore);
  return TSDB_CODE_SUCCESS;
_err:
  tdUidStoreDestory(&uidStore);
  smaError("vgId:%d, failed to process rsma submit since: %s", SMA_VID(pSma), terrstr());
  return TSDB_CODE_FAILED;
}

/**
 * @brief retrieve rsma meta and init
 *
 * @param pSma
 * @param nTables number of tables of rsma
 * @return int32_t
 */
static int32_t tdRSmaRestoreQTaskInfoInit(SSma *pSma, int64_t *nTables) {
  SVnode     *pVnode = pSma->pVnode;
  SArray     *suidList = NULL;
  STbUidStore uidStore = {0};
  SMetaReader mr = {0};

  if (!(suidList = taosArrayInit(1, sizeof(tb_uid_t)))) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    goto _err;
  }

  if (vnodeGetStbIdList(pSma->pVnode, 0, suidList) < 0) {
    smaError("vgId:%d, failed to restore rsma env since get stb id list error: %s", TD_VID(pVnode), terrstr());
    goto _err;
  }

  int64_t arrSize = taosArrayGetSize(suidList);

  if (arrSize == 0) {
    if (nTables) {
      *nTables = 0;
    }
    taosArrayDestroy(suidList);
    smaDebug("vgId:%d, no need to restore rsma env since empty stb id list", TD_VID(pVnode));
    return TSDB_CODE_SUCCESS;
  }

  int64_t nRsmaTables = 0;
  metaReaderInit(&mr, SMA_META(pSma), 0);
  if (!(uidStore.tbUids = taosArrayInit(1024, sizeof(tb_uid_t)))) {
    goto _err;
  }
  for (int64_t i = 0; i < arrSize; ++i) {
    tb_uid_t suid = *(tb_uid_t *)taosArrayGet(suidList, i);
    smaDebug("vgId:%d, rsma restore, suid is %" PRIi64, TD_VID(pVnode), suid);
    if (metaGetTableEntryByUid(&mr, suid) < 0) {
      smaError("vgId:%d, rsma restore, failed to get table meta for %" PRIi64 " since %s", TD_VID(pVnode), suid,
               terrstr());
      goto _err;
    }
    tDecoderClear(&mr.coder);
    ASSERT(mr.me.type == TSDB_SUPER_TABLE);
    ASSERT(mr.me.uid == suid);
    if (TABLE_IS_ROLLUP(mr.me.flags)) {
      ++nRsmaTables;
      SRSmaParam *param = &mr.me.stbEntry.rsmaParam;
      for (int i = 0; i < TSDB_RETENTION_L2; ++i) {
        smaDebug("vgId:%d, rsma restore, table:%" PRIi64 " level:%d, maxdelay:%" PRIi64 " watermark:%" PRIi64
                 " qmsgLen:%" PRIi32,
                 TD_VID(pVnode), suid, i, param->maxdelay[i], param->watermark[i], param->qmsgLen[i]);
      }
      if (tdRSmaProcessCreateImpl(pSma, &mr.me.stbEntry.rsmaParam, suid, mr.me.name) < 0) {
        smaError("vgId:%d, rsma restore env failed for %" PRIi64 " since %s", TD_VID(pVnode), suid, terrstr());
        goto _err;
      }

      // reload all ctbUids for suid
      uidStore.suid = suid;
      if (vnodeGetCtbIdList(pVnode, suid, uidStore.tbUids) < 0) {
        smaError("vgId:%d, rsma restore, get ctb idlist failed for %" PRIi64 " since %s", TD_VID(pVnode), suid,
                 terrstr());
        goto _err;
      }

      if (tdUpdateTbUidList(pVnode->pSma, &uidStore, true) < 0) {
        smaError("vgId:%d, rsma restore, update tb uid list failed for %" PRIi64 " since %s", TD_VID(pVnode), suid,
                 terrstr());
        goto _err;
      }

      taosArrayClear(uidStore.tbUids);

      smaDebug("vgId:%d, rsma restore env success for %" PRIi64, TD_VID(pVnode), suid);
    }
  }

  metaReaderClear(&mr);
  taosArrayDestroy(suidList);
  tdUidStoreDestory(&uidStore);

  if (nTables) {
    *nTables = nRsmaTables;
  }

  return TSDB_CODE_SUCCESS;
_err:
  metaReaderClear(&mr);
  taosArrayDestroy(suidList);
  tdUidStoreDestory(&uidStore);

  return TSDB_CODE_FAILED;
}

static int32_t tdRSmaRestoreQTaskInfoReload(SSma *pSma, int8_t type, int64_t qTaskFileVer) {
  SVnode *pVnode = pSma->pVnode;
  STFile  tFile = {0};
  char    qTaskInfoFName[TSDB_FILENAME_LEN] = {0};

  tdRSmaQTaskInfoGetFileName(TD_VID(pVnode), qTaskFileVer, qTaskInfoFName);
  if (tdInitTFile(&tFile, tfsGetPrimaryPath(pVnode->pTfs), qTaskInfoFName) < 0) {
    goto _err;
  }

  if (!taosCheckExistFile(TD_TFILE_FULL_NAME(&tFile))) {
    if (qTaskFileVer > 0) {
      smaWarn("vgId:%d, restore rsma task %" PRIi8 " for version %" PRIi64 ", not start as %s not exist",
              TD_VID(pVnode), type, qTaskFileVer, TD_TFILE_FULL_NAME(&tFile));
    } else {
      smaDebug("vgId:%d, restore rsma task %" PRIi8 " for version %" PRIi64 ", no need as %s not exist", TD_VID(pVnode),
               type, qTaskFileVer, TD_TFILE_FULL_NAME(&tFile));
    }
    return TSDB_CODE_SUCCESS;
  }

  if (tdOpenTFile(&tFile, TD_FILE_READ) < 0) {
    goto _err;
  }

  STFInfo tFileInfo = {0};
  if (tdLoadTFileHeader(&tFile, &tFileInfo) < 0) {
    goto _err;
  }

  SRSmaQTaskInfoIter fIter = {0};
  if (tdRSmaQTaskInfoIterInit(&fIter, &tFile) < 0) {
    tdRSmaQTaskInfoIterDestroy(&fIter);
    tdCloseTFile(&tFile);
    tdDestroyTFile(&tFile);
    goto _err;
  }

  if (tdRSmaQTaskInfoRestore(pSma, type, &fIter) < 0) {
    tdRSmaQTaskInfoIterDestroy(&fIter);
    tdCloseTFile(&tFile);
    tdDestroyTFile(&tFile);
    goto _err;
  }

  tdRSmaQTaskInfoIterDestroy(&fIter);
  tdCloseTFile(&tFile);
  tdDestroyTFile(&tFile);

  // restored successfully from committed or sync
  smaInfo("vgId:%d, restore rsma task %" PRIi8 " for version %" PRIi64 ", qtaskinfo reload succeed", TD_VID(pVnode),
          type, qTaskFileVer);
  return TSDB_CODE_SUCCESS;
_err:
  smaError("vgId:%d, restore rsma task %" PRIi8 " for version %" PRIi64 ", qtaskinfo reload failed since %s",
           TD_VID(pVnode), type, qTaskFileVer, terrstr());
  return TSDB_CODE_FAILED;
}

/**
 * @brief reload ts data from checkpoint
 *
 * @param pSma
 * @return int32_t
 */
static int32_t tdRSmaRestoreTSDataReload(SSma *pSma) {
  // NOTHING TODO: the data would be restored from the unified WAL replay procedure
  return TSDB_CODE_SUCCESS;
}

int32_t tdRSmaProcessRestoreImpl(SSma *pSma, int8_t type, int64_t qtaskFileVer) {
  // step 1: iterate all stables to restore the rsma env
  int64_t nTables = 0;
  if (tdRSmaRestoreQTaskInfoInit(pSma, &nTables) < 0) {
    goto _err;
  }

  if (nTables <= 0) {
    smaDebug("vgId:%d, no need to restore rsma task %" PRIi8 " since no tables", SMA_VID(pSma), type);
    return TSDB_CODE_SUCCESS;
  }

  // step 2: retrieve qtaskinfo items from the persistence file(rsma/qtaskinfo) and restore
  if (tdRSmaRestoreQTaskInfoReload(pSma, type, qtaskFileVer) < 0) {
    goto _err;
  }

  // step 3: reload ts data from checkpoint
  if (tdRSmaRestoreTSDataReload(pSma) < 0) {
    goto _err;
  }

  // step 4: open SRSmaFS for qTaskFiles
  if (tdRSmaFSOpen(pSma, qtaskFileVer) < 0) {
    goto _err;
  }

  smaInfo("vgId:%d, restore rsma task %" PRIi8 " from qtaskf %" PRIi64 " succeed", SMA_VID(pSma), type, qtaskFileVer);
  return TSDB_CODE_SUCCESS;
_err:
  smaError("vgId:%d, restore rsma task %" PRIi8 "from qtaskf %" PRIi64 " failed since %s", SMA_VID(pSma), type,
           qtaskFileVer, terrstr());
  return TSDB_CODE_FAILED;
}

/**
 * @brief Restore from SRSmaQTaskInfoItem
 *
 * @param pSma
 * @param pItem
 * @return int32_t
 */
static int32_t tdRSmaQTaskInfoItemRestore(SSma *pSma, const SRSmaQTaskInfoItem *pItem) {
  SRSmaInfo *pRSmaInfo = NULL;
  void      *qTaskInfo = NULL;

  pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, pItem->suid);
  if (!pRSmaInfo) {
    smaDebug("vgId:%d, no restore as no rsma info for table:%" PRIu64, SMA_VID(pSma), pItem->suid);
    return TSDB_CODE_SUCCESS;
  }

  if (pItem->type == TSDB_RETENTION_L1) {
    qTaskInfo = RSMA_INFO_QTASK(pRSmaInfo, 0);
  } else if (pItem->type == TSDB_RETENTION_L2) {
    qTaskInfo = RSMA_INFO_QTASK(pRSmaInfo, 1);
  } else {
    ASSERT(0);
  }

  if (!qTaskInfo) {
    tdReleaseRSmaInfo(pSma, pRSmaInfo);
    smaDebug("vgId:%d, no restore as NULL rsma qTaskInfo for table:%" PRIu64, SMA_VID(pSma), pItem->suid);
    return TSDB_CODE_SUCCESS;
  }

  if (qDeserializeTaskStatus(qTaskInfo, pItem->qTaskInfo, pItem->len) < 0) {
    tdReleaseRSmaInfo(pSma, pRSmaInfo);
    smaError("vgId:%d, restore rsma task failed for table:%" PRIi64 " level %d since %s", SMA_VID(pSma), pItem->suid,
             pItem->type, terrstr());
    return TSDB_CODE_FAILED;
  }
  smaDebug("vgId:%d, restore rsma task success for table:%" PRIi64 " level %d", SMA_VID(pSma), pItem->suid,
           pItem->type);

  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  return TSDB_CODE_SUCCESS;
}

static int32_t tdRSmaQTaskInfoIterInit(SRSmaQTaskInfoIter *pIter, STFile *pTFile) {
  memset(pIter, 0, sizeof(*pIter));
  pIter->pTFile = pTFile;
  pIter->offset = TD_FILE_HEAD_SIZE;

  if (tdGetTFileSize(pTFile, &pIter->fsize) < 0) {
    return TSDB_CODE_FAILED;
  }

  if ((pIter->fsize - TD_FILE_HEAD_SIZE) < RSMA_QTASKINFO_BUFSIZE) {
    pIter->nAlloc = pIter->fsize - TD_FILE_HEAD_SIZE;
  } else {
    pIter->nAlloc = RSMA_QTASKINFO_BUFSIZE;
  }

  if (pIter->nAlloc < TD_FILE_HEAD_SIZE) {
    pIter->nAlloc = TD_FILE_HEAD_SIZE;
  }

  pIter->pBuf = taosMemoryMalloc(pIter->nAlloc);
  if (!pIter->pBuf) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    return TSDB_CODE_FAILED;
  }
  pIter->qBuf = pIter->pBuf;

  return TSDB_CODE_SUCCESS;
}

static int32_t tdRSmaQTaskInfoIterNextBlock(SRSmaQTaskInfoIter *pIter, bool *isFinish) {
  STFile *pTFile = pIter->pTFile;
  int64_t nBytes = RSMA_QTASKINFO_BUFSIZE;

  if (pIter->offset >= pIter->fsize) {
    *isFinish = true;
    return TSDB_CODE_SUCCESS;
  }

  if ((pIter->fsize - pIter->offset) < RSMA_QTASKINFO_BUFSIZE) {
    nBytes = pIter->fsize - pIter->offset;
  }

  if (tdSeekTFile(pTFile, pIter->offset, SEEK_SET) < 0) {
    return TSDB_CODE_FAILED;
  }

  if (tdReadTFile(pTFile, pIter->pBuf, nBytes) != nBytes) {
    return TSDB_CODE_FAILED;
  }

  int32_t infoLen = 0;
  taosDecodeFixedI32(pIter->pBuf, &infoLen);
  if (infoLen > nBytes) {
    if (infoLen <= RSMA_QTASKINFO_BUFSIZE) {
      terrno = TSDB_CODE_RSMA_FILE_CORRUPTED;
      smaError("iterate rsma qtaskinfo file %s failed since %s", TD_TFILE_FULL_NAME(pIter->pTFile), terrstr());
      return TSDB_CODE_FAILED;
    }
    if (pIter->nAlloc < infoLen) {
      pIter->nAlloc = infoLen;
      void *pBuf = taosMemoryRealloc(pIter->pBuf, infoLen);
      if (!pBuf) {
        terrno = TSDB_CODE_OUT_OF_MEMORY;
        return TSDB_CODE_FAILED;
      }
      pIter->pBuf = pBuf;
    }

    nBytes = infoLen;

    if (tdSeekTFile(pTFile, pIter->offset, SEEK_SET) < 0) {
      return TSDB_CODE_FAILED;
    }

    if (tdReadTFile(pTFile, pIter->pBuf, nBytes) != nBytes) {
      return TSDB_CODE_FAILED;
    }
  }

  pIter->qBuf = pIter->pBuf;
  pIter->offset += nBytes;
  pIter->nBytes = nBytes;
  pIter->nBufPos = 0;

  return TSDB_CODE_SUCCESS;
}

static int32_t tdRSmaQTaskInfoRestore(SSma *pSma, int8_t type, SRSmaQTaskInfoIter *pIter) {
  while (1) {
    // block iter
    bool isFinish = false;
    if (tdRSmaQTaskInfoIterNextBlock(pIter, &isFinish) < 0) {
      return TSDB_CODE_FAILED;
    }
    if (isFinish) {
      return TSDB_CODE_SUCCESS;
    }

    // consume the block
    int32_t qTaskInfoLenWithHead = 0;
    pIter->qBuf = taosDecodeFixedI32(pIter->qBuf, &qTaskInfoLenWithHead);
    if (qTaskInfoLenWithHead < RSMA_QTASKINFO_HEAD_LEN) {
      terrno = TSDB_CODE_TDB_FILE_CORRUPTED;
      smaError("vgId:%d, restore rsma task %" PRIi8 " from qtaskinfo file %s failed since %s", SMA_VID(pSma), type,
               TD_TFILE_FULL_NAME(pIter->pTFile), terrstr());
      return TSDB_CODE_FAILED;
    }

    while (1) {
      if ((pIter->nBufPos + qTaskInfoLenWithHead) <= pIter->nBytes) {
        SRSmaQTaskInfoItem infoItem = {0};
        pIter->qBuf = taosDecodeFixedI8(pIter->qBuf, &infoItem.type);
        pIter->qBuf = taosDecodeFixedI64(pIter->qBuf, &infoItem.suid);
        infoItem.qTaskInfo = pIter->qBuf;
        infoItem.len = tdRSmaQTaskInfoContLen(qTaskInfoLenWithHead);
        // do the restore job
        smaDebug("vgId:%d, restore rsma task %" PRIi8 " from qtaskinfo file %s offset:%" PRIi64 "\n", SMA_VID(pSma),
                 type, TD_TFILE_FULL_NAME(pIter->pTFile), pIter->offset - pIter->nBytes + pIter->nBufPos);
        tdRSmaQTaskInfoItemRestore(pSma, &infoItem);

        pIter->qBuf = POINTER_SHIFT(pIter->qBuf, infoItem.len);
        pIter->nBufPos += qTaskInfoLenWithHead;

        if ((pIter->nBufPos + RSMA_QTASKINFO_HEAD_LEN) >= pIter->nBytes) {
          // prepare and load next block in the file
          pIter->offset -= (pIter->nBytes - pIter->nBufPos);
          break;
        }

        pIter->qBuf = taosDecodeFixedI32(pIter->qBuf, &qTaskInfoLenWithHead);
        continue;
      }
      // prepare and load next block in the file
      pIter->offset -= (pIter->nBytes - pIter->nBufPos);
      break;
    }
  }

  return TSDB_CODE_SUCCESS;
}

int32_t tdRSmaPersistExecImpl(SRSmaStat *pRSmaStat, SHashObj *pInfoHash) {
  SSma   *pSma = pRSmaStat->pSma;
  SVnode *pVnode = pSma->pVnode;
  int32_t vid = SMA_VID(pSma);
  int64_t toffset = 0;
  bool    isFileCreated = false;

  if (taosHashGetSize(pInfoHash) <= 0) {
    return TSDB_CODE_SUCCESS;
  }

  void *infoHash = taosHashIterate(pInfoHash, NULL);
  if (!infoHash) {
    return TSDB_CODE_SUCCESS;
  }

  int64_t fsMaxVer = tdRSmaFSMaxVer(pSma, pRSmaStat);
  if (pRSmaStat->commitAppliedVer <= fsMaxVer) {
    smaDebug("vgId:%d, rsma persist, no need as applied %" PRIi64 " not larger than fsMaxVer %" PRIi64, vid,
            pRSmaStat->commitAppliedVer, fsMaxVer);
    return TSDB_CODE_SUCCESS;
  }

  STFile tFile = {0};
#if 0
  if (pRSmaStat->commitAppliedVer > 0) {
    char qTaskInfoFName[TSDB_FILENAME_LEN];
    tdRSmaQTaskInfoGetFileName(vid, pRSmaStat->commitAppliedVer, qTaskInfoFName);
    if (tdInitTFile(&tFile, tfsGetPrimaryPath(pVnode->pTfs), qTaskInfoFName) < 0) {
      smaError("vgId:%d, rsma persist, init %s failed since %s", vid, qTaskInfoFName, terrstr());
      goto _err;
    }
    if (tdCreateTFile(&tFile, true, TD_FTYPE_RSMA_QTASKINFO) < 0) {
      smaError("vgId:%d, rsma persist, create %s failed since %s", vid, TD_TFILE_FULL_NAME(&tFile), terrstr());
      goto _err;
    }
    smaDebug("vgId:%d, rsma, serialize qTaskInfo, file %s created", vid, TD_TFILE_FULL_NAME(&tFile));

    isFileCreated = true;
  }
#endif

  while (infoHash) {
    SRSmaInfo *pRSmaInfo = *(SRSmaInfo **)infoHash;

    if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
      infoHash = taosHashIterate(pInfoHash, infoHash);
      continue;
    }

    for (int32_t i = 0; i < TSDB_RETENTION_L2; ++i) {
#if 0
      qTaskInfo_t taskInfo = RSMA_INFO_IQTASK(pRSmaInfo, i);
#endif
      qTaskInfo_t taskInfo = RSMA_INFO_QTASK(pRSmaInfo, i);
      if (!taskInfo) {
        smaDebug("vgId:%d, rsma, table %" PRIi64 " level %d qTaskInfo is NULL", vid, pRSmaInfo->suid, i + 1);
        continue;
      }

      char   *pOutput = NULL;
      int32_t len = 0;
      int8_t  type = (int8_t)(i + 1);
      if (qSerializeTaskStatus(taskInfo, &pOutput, &len) < 0) {
        smaError("vgId:%d, rsma, table %" PRIi64 " level %d serialize qTaskInfo failed since %s", vid, pRSmaInfo->suid,
                 i + 1, terrstr());
        goto _err;
      }
      if (!pOutput || len <= 0) {
        smaDebug("vgId:%d, rsma, table %" PRIi64
                 " level %d serialize qTaskInfo success but no output(len %d), not persist",
                 vid, pRSmaInfo->suid, i + 1, len);
        taosMemoryFreeClear(pOutput);
        continue;
      }

      smaDebug("vgId:%d, rsma, table %" PRIi64 " level %d serialize qTaskInfo success with len %d, need persist", vid,
               pRSmaInfo->suid, i + 1, len);

      if (!isFileCreated) {
        char qTaskInfoFName[TSDB_FILENAME_LEN];
        tdRSmaQTaskInfoGetFileName(vid, pRSmaStat->commitAppliedVer, qTaskInfoFName);
        if (tdInitTFile(&tFile, tfsGetPrimaryPath(pVnode->pTfs), qTaskInfoFName) < 0) {
          smaError("vgId:%d, rsma persist, init %s failed since %s", vid, qTaskInfoFName, terrstr());
          goto _err;
        }
        if (tdCreateTFile(&tFile, true, TD_FTYPE_RSMA_QTASKINFO) < 0) {
          smaError("vgId:%d, rsma persist, create %s failed since %s", vid, TD_TFILE_FULL_NAME(&tFile), terrstr());
          goto _err;
        }
        smaDebug("vgId:%d, rsma, table %" PRIi64 " serialize qTaskInfo, file %s created", vid, pRSmaInfo->suid,
                 TD_TFILE_FULL_NAME(&tFile));

        isFileCreated = true;
      }

      char    tmpBuf[RSMA_QTASKINFO_HEAD_LEN] = {0};
      void   *pTmpBuf = &tmpBuf;
      int32_t headLen = 0;
      headLen += taosEncodeFixedI32(&pTmpBuf, len + RSMA_QTASKINFO_HEAD_LEN);
      headLen += taosEncodeFixedI8(&pTmpBuf, type);
      headLen += taosEncodeFixedI64(&pTmpBuf, pRSmaInfo->suid);

      ASSERT(headLen <= RSMA_QTASKINFO_HEAD_LEN);
      tdAppendTFile(&tFile, (void *)&tmpBuf, headLen, &toffset);
      smaDebug("vgId:%d, rsma, table %" PRIi64 " level %d head part(len:%d) appended to offset:%" PRIi64, vid,
               pRSmaInfo->suid, i + 1, headLen, toffset);
      tdAppendTFile(&tFile, pOutput, len, &toffset);
      smaDebug("vgId:%d, rsma, table %" PRIi64 " level %d body part len:%d appended to offset:%" PRIi64, vid,
               pRSmaInfo->suid, i + 1, len, toffset);

      taosMemoryFree(pOutput);
    }

    infoHash = taosHashIterate(pInfoHash, infoHash);
  }

  if (isFileCreated) {
    if (tdUpdateTFileHeader(&tFile) < 0) {
      smaError("vgId:%d, rsma, failed to update tfile %s header since %s", vid, TD_TFILE_FULL_NAME(&tFile),
               tstrerror(terrno));
      goto _err;
    } else {
      smaDebug("vgId:%d, rsma, succeed to update tfile %s header", vid, TD_TFILE_FULL_NAME(&tFile));
    }

    tdCloseTFile(&tFile);
    tdDestroyTFile(&tFile);
  }
  return TSDB_CODE_SUCCESS;
_err:
  smaError("vgId:%d, rsma persist failed since %s", vid, terrstr());
  if (isFileCreated) {
    tdRemoveTFile(&tFile);
    tdDestroyTFile(&tFile);
  }
  return TSDB_CODE_FAILED;
}

/**
 * @brief trigger to get rsma result in async mode
 *
 * @param param
 * @param tmrId
 */
static void tdRSmaFetchTrigger(void *param, void *tmrId) {
  SRSmaRef      *pRSmaRef = NULL;
  SSma          *pSma = NULL;
  SRSmaStat     *pStat = NULL;
  SRSmaInfo     *pRSmaInfo = NULL;
  SRSmaInfoItem *pItem = NULL;

  if (!(pRSmaRef = taosHashGet(smaMgmt.refHash, &param, POINTER_BYTES))) {
    smaDebug("rsma fetch task not start since rsma info item:%p not exist in refHash:%p, rsetId:%" PRIi64, param,
             *(int64_t *)&param, smaMgmt.refHash, smaMgmt.rsetId);
    return;
  }

  if (!(pStat = (SRSmaStat *)tdAcquireSmaRef(smaMgmt.rsetId, pRSmaRef->refId))) {
    smaDebug("rsma fetch task not start since rsma stat already destroyed, rsetId:%" PRIi64 " refId:%d)",
             smaMgmt.rsetId, pRSmaRef->refId);  // pRSmaRef freed in taosHashRemove
    taosHashRemove(smaMgmt.refHash, &param, POINTER_BYTES);
    return;
  }

  pSma = pStat->pSma;

  if (!(pRSmaInfo = tdAcquireRSmaInfoBySuid(pSma, pRSmaRef->suid))) {
    smaDebug("rsma fetch task not start since rsma info not exist, rsetId:%" PRIi64 " refId:%d)", smaMgmt.rsetId,
             pRSmaRef->refId);  // pRSmaRef freed in taosHashRemove
    tdReleaseSmaRef(smaMgmt.rsetId, pRSmaRef->refId);
    taosHashRemove(smaMgmt.refHash, &param, POINTER_BYTES);
    return;
  }

  if (RSMA_INFO_IS_DEL(pRSmaInfo)) {
    smaDebug("rsma fetch task not start since rsma info already deleted, rsetId:%" PRIi64 " refId:%d)", smaMgmt.rsetId,
             pRSmaRef->refId);  // pRSmaRef freed in taosHashRemove
    tdReleaseRSmaInfo(pSma, pRSmaInfo);
    tdReleaseSmaRef(smaMgmt.rsetId, pRSmaRef->refId);
    taosHashRemove(smaMgmt.refHash, &param, POINTER_BYTES);
    return;
  }

  pItem = *(SRSmaInfoItem **)&param;

  // if rsma trigger stat in paused, cancelled or finished, not start fetch task
  int8_t rsmaTriggerStat = atomic_load_8(RSMA_TRIGGER_STAT(pStat));
  switch (rsmaTriggerStat) {
    case TASK_TRIGGER_STAT_PAUSED:
    case TASK_TRIGGER_STAT_CANCELLED: {
      smaDebug("vgId:%d, rsma fetch task not start for level %" PRIi8 " since stat is %" PRIi8
               ", rsetId rsetId:%" PRIi64 " refId:%d",
               SMA_VID(pSma), pItem->level, rsmaTriggerStat, smaMgmt.rsetId, pRSmaRef->refId);
      if (rsmaTriggerStat == TASK_TRIGGER_STAT_PAUSED) {
        taosTmrReset(tdRSmaFetchTrigger, RSMA_FETCH_INTERVAL, pItem, smaMgmt.tmrHandle, &pItem->tmrId);
      }
      tdReleaseRSmaInfo(pSma, pRSmaInfo);
      tdReleaseSmaRef(smaMgmt.rsetId, pRSmaRef->refId);
      return;
    }
    default:
      break;
  }

  int8_t fetchTriggerStat =
      atomic_val_compare_exchange_8(&pItem->triggerStat, TASK_TRIGGER_STAT_ACTIVE, TASK_TRIGGER_STAT_INACTIVE);
  switch (fetchTriggerStat) {
    case TASK_TRIGGER_STAT_ACTIVE: {
      smaDebug("vgId:%d, rsma fetch task planned for level:%" PRIi8 " suid:%" PRIi64 " since stat is active",
               SMA_VID(pSma), pItem->level, pRSmaInfo->suid);
      // async process
      pItem->fetchLevel = pItem->level;
#if 0
      SRSmaInfo     *qInfo = tdAcquireRSmaInfoBySuid(pSma, pRSmaInfo->suid);
      SRSmaInfoItem *qItem = RSMA_INFO_ITEM(qInfo, pItem->level - 1);
      ASSERT(qItem->level == pItem->level);
      ASSERT(qItem->fetchLevel == pItem->fetchLevel);
#endif
      if (atomic_load_8(&pRSmaInfo->assigned) == 0) {
        tsem_post(&(pStat->notEmpty));
      }
    } break;
    case TASK_TRIGGER_STAT_PAUSED: {
      smaDebug("vgId:%d, rsma fetch task not start for level:%" PRIi8 " suid:%" PRIi64 " since stat is paused",
               SMA_VID(pSma), pItem->level, pRSmaInfo->suid);
    } break;
    case TASK_TRIGGER_STAT_INACTIVE: {
      smaDebug("vgId:%d, rsma fetch task not start for level:%" PRIi8 " suid:%" PRIi64 " since stat is inactive",
               SMA_VID(pSma), pItem->level, pRSmaInfo->suid);
    } break;
    case TASK_TRIGGER_STAT_INIT: {
      smaDebug("vgId:%d, rsma fetch task not start for level:%" PRIi8 " suid::%" PRIi64 " since stat is init",
               SMA_VID(pSma), pItem->level, pRSmaInfo->suid);
    } break;
    default: {
      smaDebug("vgId:%d, rsma fetch task not start for level:%" PRIi8 " suid:%" PRIi64 " since stat is unknown",
               SMA_VID(pSma), pItem->level, pRSmaInfo->suid);
    } break;
  }

_end:
  taosTmrReset(tdRSmaFetchTrigger, pItem->maxDelay, pItem, smaMgmt.tmrHandle, &pItem->tmrId);
  tdReleaseRSmaInfo(pSma, pRSmaInfo);
  tdReleaseSmaRef(smaMgmt.rsetId, pRSmaRef->refId);
}

static void tdFreeRSmaSubmitItems(SArray *pItems) {
  for (int32_t i = 0; i < taosArrayGetSize(pItems); ++i) {
    taosFreeQitem(*(void **)taosArrayGet(pItems, i));
  }
  taosArrayClear(pItems);
}

/**
 * @brief fetch rsma result(consider the efficiency and functionality)
 *
 * @param pSma
 * @param pInfo
 * @return int32_t
 */
static int32_t tdRSmaFetchAllResult(SSma *pSma, SRSmaInfo *pInfo) {
  SSDataBlock dataBlock = {.info.type = STREAM_GET_ALL};
  for (int8_t i = 1; i <= TSDB_RETENTION_L2; ++i) {
    SRSmaInfoItem *pItem = RSMA_INFO_ITEM(pInfo, i - 1);
    if (pItem->fetchLevel) {
      pItem->fetchLevel = 0;
      qTaskInfo_t taskInfo = RSMA_INFO_QTASK(pInfo, i - 1);
      if (!taskInfo) {
        continue;
      }

      int64_t curMs = taosGetTimestampMs();
      if ((pItem->nSkipped * pItem->maxDelay) > RSMA_FETCH_DELAY_MAX) {
        smaDebug("vgId:%d, suid:%" PRIi64 " level:%" PRIi8 " nSkipped:%" PRIi8 " maxDelay:%d, fetch executed",
                 SMA_VID(pSma), pInfo->suid, i, pItem->nSkipped, pItem->maxDelay);
      } else if (((curMs - pInfo->lastRecv) < RSMA_FETCH_ACTIVE_MAX)) {
        ++pItem->nSkipped;
        smaTrace("vgId:%d, suid:%" PRIi64 " level:%" PRIi8 " curMs:%" PRIi64 " lastRecv:%" PRIi64 ", fetch skipped ",
                 SMA_VID(pSma), pInfo->suid, i, curMs, pInfo->lastRecv);
        continue;
      } else {
        smaDebug("vgId:%d, suid:%" PRIi64 " level:%" PRIi8 " curMs:%" PRIi64 " lastRecv:%" PRIi64 ", fetch executed ",
                 SMA_VID(pSma), pInfo->suid, i, curMs, pInfo->lastRecv);
      }

      pItem->nSkipped = 0;

      if ((terrno = qSetMultiStreamInput(taskInfo, &dataBlock, 1, STREAM_INPUT__DATA_BLOCK)) < 0) {
        goto _err;
      }
      if (tdRSmaExecAndSubmitResult(pSma, taskInfo, pItem, pInfo->pTSchema, pInfo->suid) < 0) {
        tdCleanupStreamInputDataBlock(taskInfo);
        goto _err;
      }

      tdCleanupStreamInputDataBlock(taskInfo);
      smaInfo("vgId:%d, suid:%" PRIi64 " level:%" PRIi8 " nSkipped:%" PRIi8 " maxDelay:%d, fetch finished",
              SMA_VID(pSma), pInfo->suid, i, pItem->nSkipped, pItem->maxDelay);
    } else {
      smaDebug("vgId:%d, suid:%" PRIi64 " level:%" PRIi8 " nSkipped:%" PRIi8
               " maxDelay:%d, fetch not executed as fetch level is %" PRIi8,
               SMA_VID(pSma), pInfo->suid, i, pItem->nSkipped, pItem->maxDelay, pItem->fetchLevel);
    }
  }

_end:
  return TSDB_CODE_SUCCESS;
_err:
  return TSDB_CODE_FAILED;
}

static int32_t tdRSmaBatchExec(SSma *pSma, SRSmaInfo *pInfo, STaosQall *qall, SArray *pSubmitArr, ERsmaExecType type) {
  taosArrayClear(pSubmitArr);
  while (1) {
    void *msg = NULL;
    taosGetQitem(qall, (void **)&msg);
    if (msg) {
      if (taosArrayPush(pSubmitArr, &msg) < 0) {
        tdFreeRSmaSubmitItems(pSubmitArr);
        goto _err;
      }
    } else {
      break;
    }
  }

  int32_t size = taosArrayGetSize(pSubmitArr);
  if (size > 0) {
    for (int32_t i = 1; i <= TSDB_RETENTION_L2; ++i) {
      if (tdExecuteRSmaImpl(pSma, pSubmitArr->pData, size, STREAM_INPUT__MERGED_SUBMIT, pInfo, type, i) < 0) {
        tdFreeRSmaSubmitItems(pSubmitArr);
        goto _err;
      }
    }
    tdFreeRSmaSubmitItems(pSubmitArr);
  }
  return TSDB_CODE_SUCCESS;
_err:
  while (1) {
    void *msg = NULL;
    taosGetQitem(qall, (void **)&msg);
    if (msg) {
      taosFreeQitem(msg);
    } else {
      break;
    }
  }
  return TSDB_CODE_FAILED;
}

/**
 * @brief
 *
 * @param pSma
 * @param type
 * @return int32_t
 */

int32_t tdRSmaProcessExecImpl(SSma *pSma, ERsmaExecType type) {
  SVnode    *pVnode = pSma->pVnode;
  SSmaEnv   *pEnv = SMA_RSMA_ENV(pSma);
  SRSmaStat *pRSmaStat = (SRSmaStat *)SMA_ENV_STAT(pEnv);
  SHashObj  *infoHash = NULL;
  SArray    *pSubmitArr = NULL;
  bool       isFetchAll = false;

  if (!pRSmaStat || !(infoHash = RSMA_INFO_HASH(pRSmaStat))) {
    terrno = TSDB_CODE_RSMA_INVALID_STAT;
    goto _err;
  }

  if (!(pSubmitArr =
            taosArrayInit(TMIN(RSMA_SUBMIT_BATCH_SIZE, atomic_load_64(&pRSmaStat->nBufItems)), POINTER_BYTES))) {
    terrno = TSDB_CODE_OUT_OF_MEMORY;
    goto _err;
  }

  while (true) {
    // step 1: rsma exec - consume data in buffer queue for all suids
    if (type == RSMA_EXEC_OVERFLOW || type == RSMA_EXEC_COMMIT) {
      void *pIter = NULL;
      while ((pIter = taosHashIterate(infoHash, pIter))) {
        SRSmaInfo *pInfo = *(SRSmaInfo **)pIter;
        if (atomic_val_compare_exchange_8(&pInfo->assigned, 0, 1) == 0) {
          if ((taosQueueItemSize(pInfo->queue) > 0) || RSMA_INFO_ITEM(pInfo, 0)->fetchLevel ||
              RSMA_INFO_ITEM(pInfo, 1)->fetchLevel) {
            int32_t batchCnt = -1;
            int32_t batchMax = taosHashGetSize(infoHash) / tsNumOfVnodeRsmaThreads;
            bool    occupied = (batchMax <= 1);
            if (batchMax > 1) {
              batchMax = 100 / batchMax;
            }
            while (occupied || (++batchCnt < batchMax)) {    // greedy mode
              taosReadAllQitems(pInfo->queue, pInfo->qall);  // queue has mutex lock
              int32_t qallItemSize = taosQallItemSize(pInfo->qall);
              if (qallItemSize > 0) {
                tdRSmaBatchExec(pSma, pInfo, pInfo->qall, pSubmitArr, type);
                smaDebug("vgId:%d, batchSize:%d, execType:%" PRIi8, SMA_VID(pSma), qallItemSize, type);
              }

              int8_t oldStat = atomic_val_compare_exchange_8(RSMA_COMMIT_STAT(pRSmaStat), 0, 2);
              if (oldStat == 0 ||
                  ((oldStat == 2) && atomic_load_8(RSMA_TRIGGER_STAT(pRSmaStat)) < TASK_TRIGGER_STAT_PAUSED)) {
                atomic_fetch_add_32(&pRSmaStat->nFetchAll, 1);
                tdRSmaFetchAllResult(pSma, pInfo);
                if (0 == atomic_sub_fetch_32(&pRSmaStat->nFetchAll, 1)) {
                  atomic_store_8(RSMA_COMMIT_STAT(pRSmaStat), 0);
                }
              }

              if (qallItemSize > 0) {
                atomic_fetch_sub_64(&pRSmaStat->nBufItems, qallItemSize);
                continue;
              } else if (RSMA_INFO_ITEM(pInfo, 0)->fetchLevel || RSMA_INFO_ITEM(pInfo, 1)->fetchLevel) {
                if (atomic_load_8(RSMA_COMMIT_STAT(pRSmaStat)) == 0) {
                  continue;
                }
                for (int32_t j = 0; j < TSDB_RETENTION_L2; ++j) {
                  SRSmaInfoItem *pItem = RSMA_INFO_ITEM(pInfo, j);
                  if (pItem->fetchLevel) {
                    pItem->fetchLevel = 0;
                    taosTmrReset(tdRSmaFetchTrigger, RSMA_FETCH_INTERVAL, pItem, smaMgmt.tmrHandle, &pItem->tmrId);
                  }
                }
              }

              break;
            }
          }
          atomic_val_compare_exchange_8(&pInfo->assigned, 1, 0);
        }
      }
      if (type == RSMA_EXEC_COMMIT) {
        if (atomic_load_64(&pRSmaStat->nBufItems) <= 0) {
          break;
        } else {
          // commit should wait for all items be consumed
          continue;
        }
      }
    }
#if 0
    else if (type == RSMA_EXEC_COMMIT) {
      while (pIter) {
        SRSmaInfo *pInfo = *(SRSmaInfo **)pIter;
        if (taosQueueItemSize(pInfo->iQueue)) {
          if (atomic_val_compare_exchange_8(&pInfo->assigned, 0, 1) == 0) {
            taosReadAllQitems(pInfo->iQueue, pInfo->iQall);  // queue has mutex lock
            int32_t qallItemSize = taosQallItemSize(pInfo->iQall);
            if (qallItemSize > 0) {
              atomic_fetch_sub_64(&pRSmaStat->nBufItems, qallItemSize);
              nIdle = 0;

              // batch exec
              tdRSmaBatchExec(pSma, pInfo, pInfo->qall, pSubmitArr, type);
            }

            // tdRSmaFetchAllResult(pSma, pInfo, pSubmitArr);
            atomic_val_compare_exchange_8(&pInfo->assigned, 1, 0);
          }
        }
        ASSERT(taosQueueItemSize(pInfo->iQueue) == 0);
        pIter = taosHashIterate(infoHash, pIter);
      }
      break;
    }
#endif
    else {
      ASSERT(0);
    }

    if (atomic_load_64(&pRSmaStat->nBufItems) <= 0) {
      if (pEnv->flag & SMA_ENV_FLG_CLOSE) {
        break;
      }

      tsem_wait(&pRSmaStat->notEmpty);

      if ((pEnv->flag & SMA_ENV_FLG_CLOSE) && (atomic_load_64(&pRSmaStat->nBufItems) <= 0)) {
        smaInfo("vgId:%d, exec task end, flag:%" PRIi8 ", nBufItems:%" PRIi64, SMA_VID(pSma), pEnv->flag,
                atomic_load_64(&pRSmaStat->nBufItems));
        break;
      }
    }

  }  // end of while(true)

_end:
  taosArrayDestroy(pSubmitArr);
  return TSDB_CODE_SUCCESS;
_err:
  taosArrayDestroy(pSubmitArr);
  return TSDB_CODE_FAILED;
}