#3629

Committed 04 Mar 2025 01:45PM UTC coverage: 63.692% (-0.1%) from 63.79%

Build # #3629

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travis-ci

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Commit Message

Merge pull request #30007 from taosdata/revert-29951-docs/update-exception-handling-strategy

Revert "docs: update exception handling strategy"

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71.85

/source/dnode/vnode/src/tq/tqStreamTask.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 "tq.h"
#include "vnd.h"

#define SCAN_WAL_IDLE_DURATION    250  // idle for 500ms to do next wal scan
#define SCAN_WAL_WAIT_COUNT       2

typedef struct SBuildScanWalMsgParam {
  int64_t metaId;
  SMsgCb  msgCb;
} SBuildScanWalMsgParam;

static int32_t doScanWalForAllTasks(SStreamMeta* pStreamMeta, int32_t* pNumOfTasks);
static int32_t setWalReaderStartOffset(SStreamTask* pTask, int32_t vgId);
static bool    handleFillhistoryScanComplete(SStreamTask* pTask, int64_t ver);
static bool    taskReadyForDataFromWal(SStreamTask* pTask);
static int32_t doPutDataIntoInputQ(SStreamTask* pTask, int64_t maxVer, int32_t* numOfItems, bool* pSucc);

// extract data blocks(submit/delete) from WAL, and add them into the input queue for all the sources tasks.
int32_t tqScanWal(STQ* pTq) {
  SStreamMeta* pMeta = pTq->pStreamMeta;
  int32_t      vgId = pMeta->vgId;
  int64_t      st = taosGetTimestampMs();
  int32_t      numOfTasks = 0;
  int64_t      el = 0;
  int32_t      code = 0;

  int32_t old = atomic_val_compare_exchange_32(&pMeta->scanInfo.scanSentinel, 0, 1);
  if (old == 0) {
    tqDebug("vgId:%d try to scan wal to extract data", vgId);
  } else {
    tqDebug("vgId:%d already in wal scan, abort", vgId);
    return code;
  }

  // the scan wal interval less than 200, not scan, actually.
  if ((pMeta->scanInfo.lastScanTs > 0) && (st - pMeta->scanInfo.lastScanTs < 200)) {
    tqDebug("vgId:%d scan wal less than 200ms, do nothing", vgId);
    atomic_store_32(&pMeta->scanInfo.scanSentinel, 0);
    return code;
  }

  // check all tasks
  code = doScanWalForAllTasks(pMeta, &numOfTasks);

  pMeta->scanInfo.lastScanTs = taosGetTimestampMs();
  el = (pMeta->scanInfo.lastScanTs - st);

  if (code) {
    tqError("vgId:%d failed to scan wal for all tasks, try next time, elapsed time:%" PRId64 "ms code:%s", vgId, el,
            tstrerror(code));
  } else {
    tqDebug("vgId:%d scan wal for stream tasks completed, elapsed time:%" PRId64 "ms", vgId, el);
  }

  atomic_store_32(&pMeta->scanInfo.scanSentinel, 0);
  return code;
}

static bool waitEnoughDuration(SStreamMeta* pMeta) {
  if ((++pMeta->scanInfo.tickCounter) >= SCAN_WAL_WAIT_COUNT) {
    pMeta->scanInfo.tickCounter = 0;
    return true;
  }

  return false;
}

static void doStartScanWal(void* param, void* tmrId) {
  int32_t                vgId = 0;
  int32_t                code = 0;
  int32_t                numOfTasks = 0;
  tmr_h                  pTimer = NULL;
  SBuildScanWalMsgParam* pParam = (SBuildScanWalMsgParam*)param;

  tqDebug("start to do scan wal in tmr, metaRid:%" PRId64, pParam->metaId);

  SStreamMeta* pMeta = taosAcquireRef(streamMetaRefPool, pParam->metaId);
  if (pMeta == NULL) {
    tqError("metaRid:%" PRId64 " not valid now, stream meta has been freed", pParam->metaId);
    taosMemoryFree(pParam);
    return;
  }

  vgId = pMeta->vgId;
  code = streamTimerGetInstance(&pTimer);
  if (code) {
    tqFatal("vgId:%d failed to get tmr ctrl during sched scan wal, not scan wal, code:%s", vgId, tstrerror(code));
    taosMemoryFree(pParam);
    return;
  }

  if (pMeta->closeFlag) {
    code = taosReleaseRef(streamMetaRefPool, pParam->metaId);
    if (code == TSDB_CODE_SUCCESS) {
      tqInfo("vgId:%d jump out of scan wal timer since closed", vgId);
    } else {
      tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,
              tstrerror(code));
    }

    taosMemoryFree(pParam);
    return;
  }

  if (pMeta->role != NODE_ROLE_LEADER) {
    tqDebug("vgId:%d not leader, role:%d not scan wal anymore", vgId, pMeta->role);

    code = taosReleaseRef(streamMetaRefPool, pParam->metaId);
    if (code == TSDB_CODE_SUCCESS) {
      tqDebug("vgId:%d jump out of scan wal timer since not leader", vgId);
    } else {
      tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,
              tstrerror(code));
    }

    taosMemFree(pParam);
    return;
  }

  if (pMeta->startInfo.startAllTasks) {
    tqDebug("vgId:%d in restart procedure, not ready to scan wal", vgId);
    goto _end;
  }

  if (!waitEnoughDuration(pMeta)) {
    streamTmrStart(doStartScanWal, SCAN_WAL_IDLE_DURATION, pParam, pTimer, &pMeta->scanInfo.scanTimer, vgId,
                   "scan-wal");
    code = taosReleaseRef(streamMetaRefPool, pParam->metaId);
    if (code) {
      tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,
              tstrerror(code));
    }
    return;
  }

  code = streamMetaTryRlock(pMeta);
  if (code == 0) {
    numOfTasks = taosArrayGetSize(pMeta->pTaskList);
    streamMetaRUnLock(pMeta);
  } else {
    numOfTasks = 0;
  }

  if (numOfTasks == 0) {
    goto _end;
  }

  tqDebug("vgId:%d create msg to start wal scan, numOfTasks:%d", vgId, numOfTasks);

   #if 0
  //  wait for the vnode is freed, and invalid read may occur.
  taosMsleep(10000);
   #endif

  code = streamTaskSchedTask(&pParam->msgCb, vgId, 0, 0, STREAM_EXEC_T_EXTRACT_WAL_DATA);
  if (code) {
    tqError("vgId:%d failed sched task to scan wal, code:%s", vgId, tstrerror(code));
  }

_end:
  streamTmrStart(doStartScanWal, SCAN_WAL_IDLE_DURATION, pParam, pTimer, &pMeta->scanInfo.scanTimer, vgId, "scan-wal");
  tqDebug("vgId:%d scan-wal will start in %dms", vgId, SCAN_WAL_IDLE_DURATION*SCAN_WAL_WAIT_COUNT);

  code = taosReleaseRef(streamMetaRefPool, pParam->metaId);
  if (code) {
    tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,
            tstrerror(code));
  }
}

void tqScanWalAsync(STQ* pTq) {
  SStreamMeta*           pMeta = pTq->pStreamMeta;
  int32_t                code = 0;
  int32_t                vgId = TD_VID(pTq->pVnode);
  tmr_h                  pTimer = NULL;
  SBuildScanWalMsgParam* pParam = NULL;

  // 1. the vnode should be the leader.
  // 2. the stream isn't disabled
  if ((pMeta->role == NODE_ROLE_FOLLOWER) || tsDisableStream) {
    tqInfo("vgId:%d follower node or stream disabled, not scan wal", vgId);
    return;
  }

  pParam = taosMemoryMalloc(sizeof(SBuildScanWalMsgParam));
  if (pParam == NULL) {
    tqError("vgId:%d failed to start scan wal, stream not executes, code:%s", vgId, tstrerror(code));
    return;
  }

  pParam->metaId = pMeta->rid;
  pParam->msgCb = pTq->pVnode->msgCb;

  code = streamTimerGetInstance(&pTimer);
  if (code) {
    tqFatal("vgId:%d failed to get tmr ctrl during sched scan wal", vgId);
    taosMemoryFree(pParam);
  } else {
    streamTmrStart(doStartScanWal, SCAN_WAL_IDLE_DURATION, pParam, pTimer, &pMeta->scanInfo.scanTimer, vgId,
                   "scan-wal");
  }
}

int32_t tqStopStreamAllTasksAsync(SStreamMeta* pMeta, SMsgCb* pMsgCb) {
  return streamTaskSchedTask(pMsgCb, pMeta->vgId, 0, 0, STREAM_EXEC_T_STOP_ALL_TASKS);
}

int32_t setWalReaderStartOffset(SStreamTask* pTask, int32_t vgId) {
  // seek the stored version and extract data from WAL
  int64_t firstVer = walReaderGetValidFirstVer(pTask->exec.pWalReader);
  if (pTask->chkInfo.nextProcessVer < firstVer) {
    tqWarn("vgId:%d s-task:%s ver:%" PRId64 " earlier than the first ver of wal range %" PRId64 ", forward to %" PRId64,
           vgId, pTask->id.idStr, pTask->chkInfo.nextProcessVer, firstVer, firstVer);

    pTask->chkInfo.nextProcessVer = firstVer;

    // todo need retry if failed
    int32_t code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.nextProcessVer);
    if (code != TSDB_CODE_SUCCESS) {
      return code;
    }

    // append the data for the stream
    tqDebug("vgId:%d s-task:%s wal reader seek to ver:%" PRId64, vgId, pTask->id.idStr, pTask->chkInfo.nextProcessVer);
  } else {
    int64_t currentVer = walReaderGetCurrentVer(pTask->exec.pWalReader);
    if (currentVer == -1) {  // we only seek the read for the first time
      int32_t code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.nextProcessVer);
      if (code != TSDB_CODE_SUCCESS) {  // no data in wal, quit
        return code;
      }

      // append the data for the stream
      tqDebug("vgId:%d s-task:%s wal reader initial seek to ver:%" PRId64, vgId, pTask->id.idStr,
              pTask->chkInfo.nextProcessVer);
    }
  }

  int64_t skipToVer = walReaderGetSkipToVersion(pTask->exec.pWalReader);
  if (skipToVer != 0 && skipToVer > pTask->chkInfo.nextProcessVer) {
    int32_t code = walReaderSeekVer(pTask->exec.pWalReader, skipToVer);
    if (code != TSDB_CODE_SUCCESS) {  // no data in wal, quit
      return code;
    }

    tqDebug("vgId:%d s-task:%s wal reader jump to ver:%" PRId64, vgId, pTask->id.idStr, skipToVer);
  }

  return TSDB_CODE_SUCCESS;
}

// todo handle memory error
bool handleFillhistoryScanComplete(SStreamTask* pTask, int64_t ver) {
  const char* id = pTask->id.idStr;
  int64_t     maxVer = pTask->step2Range.maxVer;

  if ((pTask->info.fillHistory == 1) && ver > maxVer) {
    if (!pTask->status.appendTranstateBlock) {
      qWarn("s-task:%s fill-history scan WAL, nextProcessVer:%" PRId64 " out of the maximum ver:%" PRId64
            ", not scan wal anymore, add transfer-state block into inputQ",
            id, ver, maxVer);

      double el = (taosGetTimestampMs() - pTask->execInfo.step2Start) / 1000.0;
      qDebug("s-task:%s scan-history from WAL stage(step 2) ended, range:%" PRId64 "-%" PRId64 ", elapsed time:%.2fs",
             id, pTask->step2Range.minVer, maxVer, el);
      int32_t code = streamTaskPutTranstateIntoInputQ(pTask);
      if (code) {
        qError("s-task:%s failed to put trans-state into inputQ", id);
      }

      return true;
    } else {
      qWarn("s-task:%s fill-history scan WAL, nextProcessVer:%" PRId64 " out of the ver range:%" PRId64 "-%" PRId64
            ", not scan wal",
            id, ver, pTask->step2Range.minVer, maxVer);
    }
  }

  return false;
}

bool taskReadyForDataFromWal(SStreamTask* pTask) {
  // non-source or fill-history tasks don't need to response the WAL scan action.
  SSTaskBasicInfo* pInfo = &pTask->info;
  if ((pInfo->taskLevel != TASK_LEVEL__SOURCE) || (pTask->status.downstreamReady == 0)) {
    return false;
  }

  if (pInfo->taskLevel == TASK_LEVEL__SOURCE && pInfo->trigger == STREAM_TRIGGER_FORCE_WINDOW_CLOSE) {
    return false;
  }

  // not in ready state, do not handle the data from wal
  SStreamTaskState pState = streamTaskGetStatus(pTask);
  if (pState.state != TASK_STATUS__READY) {
    tqTrace("s-task:%s not ready for submit block in wal, status:%s", pTask->id.idStr, pState.name);
    return false;
  }

  // fill-history task has entered into the last phase, no need to anything
  if ((pInfo->fillHistory == 1) && pTask->status.appendTranstateBlock) {
    // the maximum version of data in the WAL has reached already, the step2 is done
    tqDebug("s-task:%s fill-history reach the maximum ver:%" PRId64 ", not scan wal anymore", pTask->id.idStr,
            pTask->dataRange.range.maxVer);
    return false;
  }

  // check whether input queue is full or not
  if (streamQueueIsFull(pTask->inputq.queue)) {
    tqTrace("s-task:%s input queue is full, launch task without scanning wal", pTask->id.idStr);
    int32_t code = streamTrySchedExec(pTask);
    if (code) {
      tqError("s-task:%s failed to start task while inputQ is full", pTask->id.idStr);
    }
    return false;
  }

  // the input queue of downstream task is full, so the output is blocked, stopped for a while
  if (pTask->inputq.status == TASK_INPUT_STATUS__BLOCKED) {
    tqDebug("s-task:%s inputQ is blocked, do nothing", pTask->id.idStr);
    return false;
  }

  return true;
}

int32_t doPutDataIntoInputQ(SStreamTask* pTask, int64_t maxVer, int32_t* numOfItems, bool* pSucc) {
  const char* id = pTask->id.idStr;
  int32_t     numOfNewItems = 0;
  int32_t     code = 0;
  *pSucc = false;

  while (1) {
    if ((pTask->info.fillHistory == 1) && pTask->status.appendTranstateBlock) {
      *numOfItems += numOfNewItems;
      return numOfNewItems > 0;
    }

    SStreamQueueItem* pItem = NULL;
    code = extractMsgFromWal(pTask->exec.pWalReader, (void**)&pItem, maxVer, id);
    if (code != TSDB_CODE_SUCCESS || pItem == NULL) {  // failed, continue
      int64_t currentVer = walReaderGetCurrentVer(pTask->exec.pWalReader);
      bool    itemInFillhistory = handleFillhistoryScanComplete(pTask, currentVer);
      if (itemInFillhistory) {
        numOfNewItems += 1;
      }
      break;
    }

    if (pItem != NULL) {
      code = streamTaskPutDataIntoInputQ(pTask, pItem);
      if (code == TSDB_CODE_SUCCESS) {
        numOfNewItems += 1;
        int64_t ver = walReaderGetCurrentVer(pTask->exec.pWalReader);
        pTask->chkInfo.nextProcessVer = ver;
        tqDebug("s-task:%s set ver:%" PRId64 " for reader after extract data from WAL", id, ver);

        bool itemInFillhistory = handleFillhistoryScanComplete(pTask, ver);
        if (itemInFillhistory) {
          break;
        }
      } else {
        if (code == TSDB_CODE_OUT_OF_MEMORY) {
          tqError("s-task:%s failed to put data into inputQ, since out of memory", id);
        } else {
          tqTrace("s-task:%s append input queue failed, code:inputQ is full, ver:%" PRId64, id,
                  pTask->chkInfo.nextProcessVer);
          code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.nextProcessVer);
          if (code) {
            tqError("s-task:%s failed to seek ver to:%" PRId64 " in wal", id, pTask->chkInfo.nextProcessVer);
          }

          code = 0;  // reset the error code
        }

        break;
      }
    }
  }

  *numOfItems += numOfNewItems;
  *pSucc = (numOfNewItems > 0);
  return code;
}

int32_t doScanWalForAllTasks(SStreamMeta* pStreamMeta, int32_t* pNumOfTasks) {
  int32_t vgId = pStreamMeta->vgId;
  SArray* pTaskList = NULL;
  int32_t numOfTasks = 0;

  // clone the task list, to avoid the task update during scan wal files
  streamMetaWLock(pStreamMeta);
  pTaskList = taosArrayDup(pStreamMeta->pTaskList, NULL);
  streamMetaWUnLock(pStreamMeta);
  if (pTaskList == NULL) {
    tqError("vgId:%d failed to create task list dup, code:%s", vgId, tstrerror(terrno));
    return terrno;
  }

  // update the new task number
  numOfTasks = taosArrayGetSize(pTaskList);
  if (pNumOfTasks != NULL) {
    *pNumOfTasks = numOfTasks;
  }

  tqDebug("vgId:%d start to check wal to extract new submit block for %d tasks", vgId, numOfTasks);

  for (int32_t i = 0; i < numOfTasks; ++i) {
    STaskId* pTaskId = taosArrayGet(pTaskList, i);
    if (pTaskId == NULL) {
      continue;
    }

    SStreamTask* pTask = NULL;
    int32_t      code = streamMetaAcquireTask(pStreamMeta, pTaskId->streamId, pTaskId->taskId, &pTask);
    if (pTask == NULL || code != 0) {
      continue;
    }

    if (!taskReadyForDataFromWal(pTask)) {
      streamMetaReleaseTask(pStreamMeta, pTask);
      continue;
    }

    // seek the stored version and extract data from WAL
    code = setWalReaderStartOffset(pTask, vgId);
    if (code != TSDB_CODE_SUCCESS) {
      streamMetaReleaseTask(pStreamMeta, pTask);
      continue;
    }

    int32_t numOfItems = streamQueueGetNumOfItems(pTask->inputq.queue);
    int64_t maxVer = (pTask->info.fillHistory == 1) ? pTask->step2Range.maxVer : INT64_MAX;

    streamMutexLock(&pTask->lock);

    SStreamTaskState state = streamTaskGetStatus(pTask);
    if (state.state != TASK_STATUS__READY) {
      tqDebug("s-task:%s not ready for submit block from wal, status:%s", pTask->id.idStr, state.name);
      streamMutexUnlock(&pTask->lock);
      streamMetaReleaseTask(pStreamMeta, pTask);
      continue;
    }

    bool hasNewData = false;
    code = doPutDataIntoInputQ(pTask, maxVer, &numOfItems, &hasNewData);
    streamMutexUnlock(&pTask->lock);

    if ((numOfItems > 0) || hasNewData) {
      code = streamTrySchedExec(pTask);
      if (code != TSDB_CODE_SUCCESS) {
        streamMetaReleaseTask(pStreamMeta, pTask);
        taosArrayDestroy(pTaskList);
        return code;
      }
    }

    streamMetaReleaseTask(pStreamMeta, pTask);
  }

  taosArrayDestroy(pTaskList);
  return TSDB_CODE_SUCCESS;
}

void streamMetaFreeTQDuringScanWalError(STQ* pTq) {
  SBuildScanWalMsgParam* p = taosMemoryCalloc(1, sizeof(SBuildScanWalMsgParam));
  p->metaId = pTq->pStreamMeta->rid;

  doStartScanWal(p, 0);
}

1	/*
2	* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
3	*
4	* This program is free software: you can use, redistribute, and/or modify
5	* it under the terms of the GNU Affero General Public License, version 3
6	* or later ("AGPL"), as published by the Free Software Foundation.
7	*
8	* This program is distributed in the hope that it will be useful, but WITHOUT
9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10	* FITNESS FOR A PARTICULAR PURPOSE.
11	*
12	* You should have received a copy of the GNU Affero General Public License
13	* along with this program. If not, see <http://www.gnu.org/licenses/>.
14	*/
15
16	#include "tq.h"
17	#include "vnd.h"
18
19	#define SCAN_WAL_IDLE_DURATION 250 // idle for 500ms to do next wal scan
20	#define SCAN_WAL_WAIT_COUNT 2
21
22	typedef struct SBuildScanWalMsgParam {
23	int64_t metaId;
24	SMsgCb msgCb;
25	} SBuildScanWalMsgParam;
26
27	static int32_t doScanWalForAllTasks(SStreamMeta* pStreamMeta, int32_t* pNumOfTasks);
28	static int32_t setWalReaderStartOffset(SStreamTask* pTask, int32_t vgId);
29	static bool handleFillhistoryScanComplete(SStreamTask* pTask, int64_t ver);
30	static bool taskReadyForDataFromWal(SStreamTask* pTask);
31	static int32_t doPutDataIntoInputQ(SStreamTask* pTask, int64_t maxVer, int32_t* numOfItems, bool* pSucc);
32
33	// extract data blocks(submit/delete) from WAL, and add them into the input queue for all the sources tasks.
34	int32_t tqScanWal(STQ* pTq) {	277,553✔
35	SStreamMeta* pMeta = pTq->pStreamMeta;	277,553✔
36	int32_t vgId = pMeta->vgId;	277,553✔
37	int64_t st = taosGetTimestampMs();	277,889✔
38	int32_t numOfTasks = 0;	277,889✔
39	int64_t el = 0;	277,889✔
40	int32_t code = 0;	277,889✔
41
42	int32_t old = atomic_val_compare_exchange_32(&pMeta->scanInfo.scanSentinel, 0, 1);	277,889✔
43	if (old == 0) {	277,836!
44	tqDebug("vgId:%d try to scan wal to extract data", vgId);	277,861✔
45	} else {
46	tqDebug("vgId:%d already in wal scan, abort", vgId);	×
47	return code;	×
48	}
49
50	// the scan wal interval less than 200, not scan, actually.
51	if ((pMeta->scanInfo.lastScanTs > 0) && (st - pMeta->scanInfo.lastScanTs < 200)) {	277,860✔
52	tqDebug("vgId:%d scan wal less than 200ms, do nothing", vgId);	208✔
53	atomic_store_32(&pMeta->scanInfo.scanSentinel, 0);	208✔
54	return code;	208✔
55	}
56
57	// check all tasks
58	code = doScanWalForAllTasks(pMeta, &numOfTasks);	277,652✔
59
60	pMeta->scanInfo.lastScanTs = taosGetTimestampMs();	277,316✔
61	el = (pMeta->scanInfo.lastScanTs - st);	277,316✔
62
63	if (code) {	277,316!
64	tqError("vgId:%d failed to scan wal for all tasks, try next time, elapsed time:%" PRId64 "ms code:%s", vgId, el,	×
65	tstrerror(code));
66	} else {
67	tqDebug("vgId:%d scan wal for stream tasks completed, elapsed time:%" PRId64 "ms", vgId, el);	277,316✔
68	}
69
70	atomic_store_32(&pMeta->scanInfo.scanSentinel, 0);	277,316✔
71	return code;	277,569✔
72	}
73
74	static bool waitEnoughDuration(SStreamMeta* pMeta) {	4,174,346✔
75	if ((++pMeta->scanInfo.tickCounter) >= SCAN_WAL_WAIT_COUNT) {	4,174,346✔
76	pMeta->scanInfo.tickCounter = 0;	2,084,694✔
77	return true;	2,084,694✔
78	}
79
80	return false;	2,089,652✔
81	}
82
83	static void doStartScanWal(void* param, void* tmrId) {	4,186,399✔
84	int32_t vgId = 0;	4,186,399✔
85	int32_t code = 0;	4,186,399✔
86	int32_t numOfTasks = 0;	4,186,399✔
87	tmr_h pTimer = NULL;	4,186,399✔
88	SBuildScanWalMsgParam* pParam = (SBuildScanWalMsgParam*)param;	4,186,399✔
89
90	tqDebug("start to do scan wal in tmr, metaRid:%" PRId64, pParam->metaId);	4,186,399✔
91
92	SStreamMeta* pMeta = taosAcquireRef(streamMetaRefPool, pParam->metaId);	4,186,399✔
93	if (pMeta == NULL) {	4,186,399!
94	tqError("metaRid:%" PRId64 " not valid now, stream meta has been freed", pParam->metaId);	×
95	taosMemoryFree(pParam);	×
96	return;	2,100,014✔
97	}
98
99	vgId = pMeta->vgId;	4,186,399✔
100	code = streamTimerGetInstance(&pTimer);	4,186,399✔
101	if (code) {	4,186,399!
102	tqFatal("vgId:%d failed to get tmr ctrl during sched scan wal, not scan wal, code:%s", vgId, tstrerror(code));	×
103	taosMemoryFree(pParam);	×
104	return;	×
105	}
106
107	if (pMeta->closeFlag) {	4,186,399✔
108	code = taosReleaseRef(streamMetaRefPool, pParam->metaId);	10,340✔
109	if (code == TSDB_CODE_SUCCESS) {	10,340!
110	tqInfo("vgId:%d jump out of scan wal timer since closed", vgId);	10,340!
111	} else {
112	tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,	×
113	tstrerror(code));
114	}
115
116	taosMemoryFree(pParam);	10,340!
117	return;	10,340✔
118	}
119
120	if (pMeta->role != NODE_ROLE_LEADER) {	4,176,059✔
121	tqDebug("vgId:%d not leader, role:%d not scan wal anymore", vgId, pMeta->role);	22!
122
123	code = taosReleaseRef(streamMetaRefPool, pParam->metaId);	22✔
124	if (code == TSDB_CODE_SUCCESS) {	22!
125	tqDebug("vgId:%d jump out of scan wal timer since not leader", vgId);	22!
126	} else {
127	tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,	×
128	tstrerror(code));
129	}
130
131	taosMemFree(pParam);	22✔
132	return;	22✔
133	}
134
135	if (pMeta->startInfo.startAllTasks) {	4,176,037✔
136	tqDebug("vgId:%d in restart procedure, not ready to scan wal", vgId);	1,691✔
137	goto _end;	1,691✔
138	}
139
140	if (!waitEnoughDuration(pMeta)) {	4,174,346✔
141	streamTmrStart(doStartScanWal, SCAN_WAL_IDLE_DURATION, pParam, pTimer, &pMeta->scanInfo.scanTimer, vgId,	2,089,652✔
142	"scan-wal");
143	code = taosReleaseRef(streamMetaRefPool, pParam->metaId);	2,089,652✔
144	if (code) {	2,089,652!
145	tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,	×
146	tstrerror(code));
147	}
148	return;	2,089,652✔
149	}
150
151	code = streamMetaTryRlock(pMeta);	2,084,694✔
152	if (code == 0) {	2,084,694✔
153	numOfTasks = taosArrayGetSize(pMeta->pTaskList);	2,084,374✔
154	streamMetaRUnLock(pMeta);	2,084,374✔
155	} else {
156	numOfTasks = 0;	320✔
157	}
158
159	if (numOfTasks == 0) {	2,084,694✔
160	goto _end;	1,806,762✔
161	}
162
163	tqDebug("vgId:%d create msg to start wal scan, numOfTasks:%d", vgId, numOfTasks);	277,932✔
164
165	#if 0
166	// wait for the vnode is freed, and invalid read may occur.
167	taosMsleep(10000);
168	#endif
169
170	code = streamTaskSchedTask(&pParam->msgCb, vgId, 0, 0, STREAM_EXEC_T_EXTRACT_WAL_DATA);	277,932✔
171	if (code) {	277,932✔
172	tqError("vgId:%d failed sched task to scan wal, code:%s", vgId, tstrerror(code));	1!
173	}
174
175	_end:	277,931✔
176	streamTmrStart(doStartScanWal, SCAN_WAL_IDLE_DURATION, pParam, pTimer, &pMeta->scanInfo.scanTimer, vgId, "scan-wal");	2,086,385✔
177	tqDebug("vgId:%d scan-wal will start in %dms", vgId, SCAN_WAL_IDLE_DURATION*SCAN_WAL_WAIT_COUNT);	2,086,385✔
178
179	code = taosReleaseRef(streamMetaRefPool, pParam->metaId);	2,086,385✔
180	if (code) {	2,086,385!
181	tqError("vgId:%d failed to release ref for streamMeta, rid:%" PRId64 " code:%s", vgId, pParam->metaId,	×
182	tstrerror(code));
183	}
184	}
185
186	void tqScanWalAsync(STQ* pTq) {	10,355✔
187	SStreamMeta* pMeta = pTq->pStreamMeta;	10,355✔
188	int32_t code = 0;	10,355✔
189	int32_t vgId = TD_VID(pTq->pVnode);	10,355✔
190	tmr_h pTimer = NULL;	10,355✔
191	SBuildScanWalMsgParam* pParam = NULL;	10,355✔
192
193	// 1. the vnode should be the leader.
194	// 2. the stream isn't disabled
195	if ((pMeta->role == NODE_ROLE_FOLLOWER) \|\| tsDisableStream) {	10,355!
196	tqInfo("vgId:%d follower node or stream disabled, not scan wal", vgId);	×
197	return;	×
198	}
199
200	pParam = taosMemoryMalloc(sizeof(SBuildScanWalMsgParam));	10,361!
201	if (pParam == NULL) {	10,361!
202	tqError("vgId:%d failed to start scan wal, stream not executes, code:%s", vgId, tstrerror(code));	×
203	return;	×
204	}
205
206	pParam->metaId = pMeta->rid;	10,361✔
207	pParam->msgCb = pTq->pVnode->msgCb;	10,361✔
208
209	code = streamTimerGetInstance(&pTimer);	10,361✔
210	if (code) {	10,358!
211	tqFatal("vgId:%d failed to get tmr ctrl during sched scan wal", vgId);	×
212	taosMemoryFree(pParam);	×
213	} else {
214	streamTmrStart(doStartScanWal, SCAN_WAL_IDLE_DURATION, pParam, pTimer, &pMeta->scanInfo.scanTimer, vgId,	10,358✔
215	"scan-wal");
216	}
217	}
218
219	int32_t tqStopStreamAllTasksAsync(SStreamMeta* pMeta, SMsgCb* pMsgCb) {	4,612✔
220	return streamTaskSchedTask(pMsgCb, pMeta->vgId, 0, 0, STREAM_EXEC_T_STOP_ALL_TASKS);	4,612✔
221	}
222
223	int32_t setWalReaderStartOffset(SStreamTask* pTask, int32_t vgId) {	301,772✔
224	// seek the stored version and extract data from WAL
225	int64_t firstVer = walReaderGetValidFirstVer(pTask->exec.pWalReader);	301,772✔
226	if (pTask->chkInfo.nextProcessVer < firstVer) {	301,630✔
227	tqWarn("vgId:%d s-task:%s ver:%" PRId64 " earlier than the first ver of wal range %" PRId64 ", forward to %" PRId64,	4!
228	vgId, pTask->id.idStr, pTask->chkInfo.nextProcessVer, firstVer, firstVer);
229
230	pTask->chkInfo.nextProcessVer = firstVer;	4✔
231
232	// todo need retry if failed
233	int32_t code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.nextProcessVer);	4✔
234	if (code != TSDB_CODE_SUCCESS) {	4!
235	return code;	×
236	}
237
238	// append the data for the stream
239	tqDebug("vgId:%d s-task:%s wal reader seek to ver:%" PRId64, vgId, pTask->id.idStr, pTask->chkInfo.nextProcessVer);	4!
240	} else {
241	int64_t currentVer = walReaderGetCurrentVer(pTask->exec.pWalReader);	301,626✔
242	if (currentVer == -1) { // we only seek the read for the first time	299,855✔
243	int32_t code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.nextProcessVer);	4,995✔
244	if (code != TSDB_CODE_SUCCESS) { // no data in wal, quit	4,988!
245	return code;	×
246	}
247
248	// append the data for the stream
249	tqDebug("vgId:%d s-task:%s wal reader initial seek to ver:%" PRId64, vgId, pTask->id.idStr,	4,988✔
250	pTask->chkInfo.nextProcessVer);
251	}
252	}
253
254	int64_t skipToVer = walReaderGetSkipToVersion(pTask->exec.pWalReader);	299,853✔
255	if (skipToVer != 0 && skipToVer > pTask->chkInfo.nextProcessVer) {	300,452✔
256	int32_t code = walReaderSeekVer(pTask->exec.pWalReader, skipToVer);	456✔
257	if (code != TSDB_CODE_SUCCESS) { // no data in wal, quit	455!
258	return code;	×
259	}
260
261	tqDebug("vgId:%d s-task:%s wal reader jump to ver:%" PRId64, vgId, pTask->id.idStr, skipToVer);	455✔
262	}
263
264	return TSDB_CODE_SUCCESS;	300,451✔
265	}
266
267	// todo handle memory error
268	bool handleFillhistoryScanComplete(SStreamTask* pTask, int64_t ver) {	867,215✔
269	const char* id = pTask->id.idStr;	867,215✔
270	int64_t maxVer = pTask->step2Range.maxVer;	867,215✔
271
272	if ((pTask->info.fillHistory == 1) && ver > maxVer) {	867,215✔
273	if (!pTask->status.appendTranstateBlock) {	977!
274	qWarn("s-task:%s fill-history scan WAL, nextProcessVer:%" PRId64 " out of the maximum ver:%" PRId64	977!
275	", not scan wal anymore, add transfer-state block into inputQ",
276	id, ver, maxVer);
277
278	double el = (taosGetTimestampMs() - pTask->execInfo.step2Start) / 1000.0;	977✔
279	qDebug("s-task:%s scan-history from WAL stage(step 2) ended, range:%" PRId64 "-%" PRId64 ", elapsed time:%.2fs",	977✔
280	id, pTask->step2Range.minVer, maxVer, el);
281	int32_t code = streamTaskPutTranstateIntoInputQ(pTask);	977✔
282	if (code) {	976!
283	qError("s-task:%s failed to put trans-state into inputQ", id);	×
284	}
285
286	return true;	976✔
287	} else {
288	qWarn("s-task:%s fill-history scan WAL, nextProcessVer:%" PRId64 " out of the ver range:%" PRId64 "-%" PRId64	×
289	", not scan wal",
290	id, ver, pTask->step2Range.minVer, maxVer);
291	}
292	}
293
294	return false;	866,158✔
295	}
296
297	bool taskReadyForDataFromWal(SStreamTask* pTask) {	689,916✔
298	// non-source or fill-history tasks don't need to response the WAL scan action.
299	SSTaskBasicInfo* pInfo = &pTask->info;	689,916✔
300	if ((pInfo->taskLevel != TASK_LEVEL__SOURCE) \|\| (pTask->status.downstreamReady == 0)) {	689,916✔
301	return false;	321,699✔
302	}
303
304	if (pInfo->taskLevel == TASK_LEVEL__SOURCE && pInfo->trigger == STREAM_TRIGGER_FORCE_WINDOW_CLOSE) {	368,217!
305	return false;	30,631✔
306	}
307
308	// not in ready state, do not handle the data from wal
309	SStreamTaskState pState = streamTaskGetStatus(pTask);	337,586✔
310	if (pState.state != TASK_STATUS__READY) {	337,535✔
311	tqTrace("s-task:%s not ready for submit block in wal, status:%s", pTask->id.idStr, pState.name);	29,807✔
312	return false;	29,802✔
313	}
314
315	// fill-history task has entered into the last phase, no need to anything
316	if ((pInfo->fillHistory == 1) && pTask->status.appendTranstateBlock) {	307,728✔
317	// the maximum version of data in the WAL has reached already, the step2 is done
318	tqDebug("s-task:%s fill-history reach the maximum ver:%" PRId64 ", not scan wal anymore", pTask->id.idStr,	5,604✔
319	pTask->dataRange.range.maxVer);
320	return false;	5,604✔
321	}
322
323	// check whether input queue is full or not
324	if (streamQueueIsFull(pTask->inputq.queue)) {	302,124✔
325	tqTrace("s-task:%s input queue is full, launch task without scanning wal", pTask->id.idStr);	281!
326	int32_t code = streamTrySchedExec(pTask);	281✔
327	if (code) {	2!
328	tqError("s-task:%s failed to start task while inputQ is full", pTask->id.idStr);	×
329	}
330	return false;	2✔
331	}
332
333	// the input queue of downstream task is full, so the output is blocked, stopped for a while
334	if (pTask->inputq.status == TASK_INPUT_STATUS__BLOCKED) {	301,933!
335	tqDebug("s-task:%s inputQ is blocked, do nothing", pTask->id.idStr);	×
336	return false;	×
337	}
338
339	return true;	301,933✔
340	}
341
342	int32_t doPutDataIntoInputQ(SStreamTask* pTask, int64_t maxVer, int32_t* numOfItems, bool* pSucc) {	300,967✔
343	const char* id = pTask->id.idStr;	300,967✔
344	int32_t numOfNewItems = 0;	300,967✔
345	int32_t code = 0;	300,967✔
346	*pSucc = false;	300,967✔
347
348	while (1) {	567,204✔
349	if ((pTask->info.fillHistory == 1) && pTask->status.appendTranstateBlock) {	868,171!
350	*numOfItems += numOfNewItems;	×
351	return numOfNewItems > 0;	×
352	}
353
354	SStreamQueueItem* pItem = NULL;	868,171✔
355	code = extractMsgFromWal(pTask->exec.pWalReader, (void**)&pItem, maxVer, id);	868,171✔
356	if (code != TSDB_CODE_SUCCESS \|\| pItem == NULL) { // failed, continue	867,266✔
357	int64_t currentVer = walReaderGetCurrentVer(pTask->exec.pWalReader);	299,628✔
358	bool itemInFillhistory = handleFillhistoryScanComplete(pTask, currentVer);	299,897✔
359	if (itemInFillhistory) {	299,514✔
360	numOfNewItems += 1;	693✔
361	}
362	break;	299,514✔
363	}
364
365	if (pItem != NULL) {	567,638✔
366	code = streamTaskPutDataIntoInputQ(pTask, pItem);	567,635✔
367	if (code == TSDB_CODE_SUCCESS) {	567,649✔
368	numOfNewItems += 1;	567,495✔
369	int64_t ver = walReaderGetCurrentVer(pTask->exec.pWalReader);	567,495✔
370	pTask->chkInfo.nextProcessVer = ver;	567,491✔
371	tqDebug("s-task:%s set ver:%" PRId64 " for reader after extract data from WAL", id, ver);	567,491✔
372
373	bool itemInFillhistory = handleFillhistoryScanComplete(pTask, ver);	567,491✔
374	if (itemInFillhistory) {	567,485✔
375	break;	284✔
376	}
377	} else {
378	if (code == TSDB_CODE_OUT_OF_MEMORY) {	154!
379	tqError("s-task:%s failed to put data into inputQ, since out of memory", id);	×
380	} else {
381	tqTrace("s-task:%s append input queue failed, code:inputQ is full, ver:%" PRId64, id,	154!
382	pTask->chkInfo.nextProcessVer);
383	code = walReaderSeekVer(pTask->exec.pWalReader, pTask->chkInfo.nextProcessVer);	154✔
384	if (code) {	154!
385	tqError("s-task:%s failed to seek ver to:%" PRId64 " in wal", id, pTask->chkInfo.nextProcessVer);	×
386	}
387
388	code = 0; // reset the error code	154✔
389	}
390
391	break;	154✔
392	}
393	}
394	}
395
396	*numOfItems += numOfNewItems;	299,952✔
397	*pSucc = (numOfNewItems > 0);	299,952✔
398	return code;	299,952✔
399	}
400
401	int32_t doScanWalForAllTasks(SStreamMeta* pStreamMeta, int32_t* pNumOfTasks) {	277,361✔
402	int32_t vgId = pStreamMeta->vgId;	277,361✔
403	SArray* pTaskList = NULL;	277,361✔
404	int32_t numOfTasks = 0;	277,361✔
405
406	// clone the task list, to avoid the task update during scan wal files
407	streamMetaWLock(pStreamMeta);	277,361✔
408	pTaskList = taosArrayDup(pStreamMeta->pTaskList, NULL);	277,319✔
409	streamMetaWUnLock(pStreamMeta);	277,619✔
410	if (pTaskList == NULL) {	277,401!
411	tqError("vgId:%d failed to create task list dup, code:%s", vgId, tstrerror(terrno));	×
412	return terrno;	×
413	}
414
415	// update the new task number
416	numOfTasks = taosArrayGetSize(pTaskList);	277,401✔
417	if (pNumOfTasks != NULL) {	277,363!
418	*pNumOfTasks = numOfTasks;	277,396✔
419	}
420
421	tqDebug("vgId:%d start to check wal to extract new submit block for %d tasks", vgId, numOfTasks);	277,363✔
422
423	for (int32_t i = 0; i < numOfTasks; ++i) {	968,099✔
424	STaskId* pTaskId = taosArrayGet(pTaskList, i);	690,623✔
425	if (pTaskId == NULL) {	690,101!
426	continue;	388,800✔
427	}
428
429	SStreamTask* pTask = NULL;	690,101✔
430	int32_t code = streamMetaAcquireTask(pStreamMeta, pTaskId->streamId, pTaskId->taskId, &pTask);	690,101✔
431	if (pTask == NULL \|\| code != 0) {	691,030!
432	continue;	559✔
433	}
434
435	if (!taskReadyForDataFromWal(pTask)) {	690,471✔
436	streamMetaReleaseTask(pStreamMeta, pTask);	387,738✔
437	continue;	388,269✔
438	}
439
440	// seek the stored version and extract data from WAL
441	code = setWalReaderStartOffset(pTask, vgId);	301,909✔
442	if (code != TSDB_CODE_SUCCESS) {	300,446!
443	streamMetaReleaseTask(pStreamMeta, pTask);	×
444	continue;	×
445	}
446
447	int32_t numOfItems = streamQueueGetNumOfItems(pTask->inputq.queue);	300,446✔
448	int64_t maxVer = (pTask->info.fillHistory == 1) ? pTask->step2Range.maxVer : INT64_MAX;	301,650✔
449
450	streamMutexLock(&pTask->lock);	301,650✔
451
452	SStreamTaskState state = streamTaskGetStatus(pTask);	301,435✔
453	if (state.state != TASK_STATUS__READY) {	301,014✔
454	tqDebug("s-task:%s not ready for submit block from wal, status:%s", pTask->id.idStr, state.name);	1!
455	streamMutexUnlock(&pTask->lock);	1✔
456	streamMetaReleaseTask(pStreamMeta, pTask);	1✔
457	continue;	×
458	}
459
460	bool hasNewData = false;	301,013✔
461	code = doPutDataIntoInputQ(pTask, maxVer, &numOfItems, &hasNewData);	301,013✔
462	streamMutexUnlock(&pTask->lock);	300,019✔
463
464	if ((numOfItems > 0) \|\| hasNewData) {	302,090!
465	code = streamTrySchedExec(pTask);	18,065✔
466	if (code != TSDB_CODE_SUCCESS) {	18,084!
467	streamMetaReleaseTask(pStreamMeta, pTask);	×
468	taosArrayDestroy(pTaskList);	×
469	return code;	×
470	}
471	}
472
473	streamMetaReleaseTask(pStreamMeta, pTask);	302,109✔
474	}
475
476	taosArrayDestroy(pTaskList);	277,476✔
477	return TSDB_CODE_SUCCESS;	277,254✔
478	}
479
480	void streamMetaFreeTQDuringScanWalError(STQ* pTq) {	×
481	SBuildScanWalMsgParam* p = taosMemoryCalloc(1, sizeof(SBuildScanWalMsgParam));	×
482	p->metaId = pTq->pStreamMeta->rid;	×
483
484	doStartScanWal(p, 0);	×
485	}	×

taosdata / TDengine / #3629

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