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homework-jianmu/source/libs/scheduler/src/schTask.c

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/*
* 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 "catalog.h"
#include "command.h"
#include "query.h"
#include "schedulerInt.h"
#include "tmsg.h"
#include "tref.h"
#include "trpc.h"
void schFreeTask(SSchJob *pJob, SSchTask *pTask) {
schDeregisterTaskHb(pJob, pTask);
if (pTask->candidateAddrs) {
taosArrayDestroy(pTask->candidateAddrs);
}
taosMemoryFreeClear(pTask->msg);
if (pTask->children) {
taosArrayDestroy(pTask->children);
}
if (pTask->parents) {
taosArrayDestroy(pTask->parents);
}
if (pTask->execNodes) {
taosHashCleanup(pTask->execNodes);
}
}
int32_t schInitTask(SSchJob *pJob, SSchTask *pTask, SSubplan *pPlan, SSchLevel *pLevel) {
pTask->plan = pPlan;
pTask->level = pLevel;
pTask->execId = -1;
pTask->maxExecTimes = SCH_TASK_MAX_EXEC_TIMES;
pTask->timeoutUsec = SCH_DEFAULT_TASK_TIMEOUT_USEC;
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_INIT);
pTask->taskId = schGenTaskId();
pTask->execNodes = taosHashInit(SCH_MAX_CANDIDATE_EP_NUM, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, HASH_NO_LOCK);
if (NULL == pTask->execNodes) {
SCH_TASK_ELOG("taosHashInit %d execNodes failed", SCH_MAX_CANDIDATE_EP_NUM);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
return TSDB_CODE_SUCCESS;
}
int32_t schRecordTaskSucceedNode(SSchJob *pJob, SSchTask *pTask) {
SQueryNodeAddr *addr = taosArrayGet(pTask->candidateAddrs, pTask->candidateIdx);
if (NULL == addr) {
SCH_TASK_ELOG("taosArrayGet candidate addr failed, idx:%d, size:%d", pTask->candidateIdx,
(int32_t)taosArrayGetSize(pTask->candidateAddrs));
SCH_ERR_RET(TSDB_CODE_SCH_INTERNAL_ERROR);
}
pTask->succeedAddr = *addr;
return TSDB_CODE_SUCCESS;
}
int32_t schAppendTaskExecNode(SSchJob *pJob, SSchTask *pTask, SQueryNodeAddr *addr, int32_t execId) {
SSchNodeInfo nodeInfo = {.addr = *addr, .handle = NULL};
if (taosHashPut(pTask->execNodes, &execId, sizeof(execId), &nodeInfo, sizeof(nodeInfo))) {
SCH_TASK_ELOG("taosHashPut nodeInfo to execNodes failed, errno:%d", errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
SCH_TASK_DLOG("task execNode added, execId:%d", execId);
return TSDB_CODE_SUCCESS;
}
int32_t schDropTaskExecNode(SSchJob *pJob, SSchTask *pTask, void *handle, int32_t execId) {
if (NULL == pTask->execNodes) {
return TSDB_CODE_SUCCESS;
}
if (taosHashRemove(pTask->execNodes, &execId, sizeof(execId))) {
SCH_TASK_ELOG("fail to remove execId %d from execNodeList", execId);
} else {
SCH_TASK_DLOG("execId %d removed from execNodeList", execId);
}
if (execId != pTask->execId) { // ignore it
SCH_TASK_DLOG("execId %d is not current execId %d", execId, pTask->execId);
SCH_ERR_RET(TSDB_CODE_SCH_IGNORE_ERROR);
}
return TSDB_CODE_SUCCESS;
}
int32_t schUpdateTaskExecNode(SSchJob *pJob, SSchTask *pTask, void *handle, int32_t execId) {
if (taosHashGetSize(pTask->execNodes) <= 0) {
return TSDB_CODE_SUCCESS;
}
SSchNodeInfo *nodeInfo = taosHashGet(pTask->execNodes, &execId, sizeof(execId));
nodeInfo->handle = handle;
SCH_TASK_DLOG("handle updated to %p for execId %d", handle, execId);
return TSDB_CODE_SUCCESS;
}
int32_t schUpdateTaskHandle(SSchJob *pJob, SSchTask *pTask, bool dropExecNode, void *handle, int32_t execId) {
if (dropExecNode) {
SCH_RET(schDropTaskExecNode(pJob, pTask, handle, execId));
}
SCH_SET_TASK_HANDLE(pTask, handle);
schUpdateTaskExecNode(pJob, pTask, handle, execId);
return TSDB_CODE_SUCCESS;
}
// Note: no more task error processing, handled in function internal
int32_t schProcessOnTaskFailure(SSchJob *pJob, SSchTask *pTask, int32_t errCode) {
if (TSDB_CODE_SCH_IGNORE_ERROR == errCode) {
return TSDB_CODE_SCH_IGNORE_ERROR;
}
int8_t status = 0;
if (schJobNeedToStop(pJob, &status)) {
SCH_TASK_DLOG("no more task failure processing cause of job status %s", jobTaskStatusStr(status));
SCH_ERR_RET(TSDB_CODE_SCH_IGNORE_ERROR);
}
if (SCH_GET_TASK_STATUS(pTask) != JOB_TASK_STATUS_EXEC) {
SCH_TASK_ELOG("task already not in EXEC status, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
}
if (errCode == TSDB_CODE_SCH_TIMEOUT_ERROR) {
SCH_LOG_TASK_WAIT_TS(pTask);
} else {
SCH_LOG_TASK_END_TS(pTask);
}
bool needRetry = false;
bool moved = false;
int32_t taskDone = 0;
int32_t code = 0;
SCH_TASK_DLOG("taskOnFailure, code:%s", tstrerror(errCode));
SCH_ERR_RET(schTaskCheckSetRetry(pJob, pTask, errCode, &needRetry));
if (!needRetry) {
SCH_TASK_ELOG("task failed and no more retry, code:%s", tstrerror(errCode));
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_FAIL);
if (SCH_IS_WAIT_ALL_JOB(pJob)) {
SCH_LOCK(SCH_WRITE, &pTask->level->lock);
pTask->level->taskFailed++;
taskDone = pTask->level->taskSucceed + pTask->level->taskFailed;
SCH_UNLOCK(SCH_WRITE, &pTask->level->lock);
schUpdateJobErrCode(pJob, errCode);
if (taskDone < pTask->level->taskNum) {
SCH_TASK_DLOG("need to wait other tasks, doneNum:%d, allNum:%d", taskDone, pTask->level->taskNum);
SCH_RET(errCode);
}
}
} else {
SCH_ERR_RET(schHandleTaskRetry(pJob, pTask));
return TSDB_CODE_SUCCESS;
}
SCH_RET(code);
}
// Note: no more task error processing, handled in function internal
int32_t schProcessOnTaskSuccess(SSchJob *pJob, SSchTask *pTask) {
bool moved = false;
int32_t code = 0;
SCH_TASK_DLOG("taskOnSuccess, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
SCH_LOG_TASK_END_TS(pTask);
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_PART_SUCC);
SCH_ERR_RET(schRecordTaskSucceedNode(pJob, pTask));
SCH_ERR_RET(schLaunchTasksInFlowCtrlList(pJob, pTask));
int32_t parentNum = pTask->parents ? (int32_t)taosArrayGetSize(pTask->parents) : 0;
if (parentNum == 0) {
int32_t taskDone = 0;
if (SCH_IS_WAIT_ALL_JOB(pJob)) {
SCH_LOCK(SCH_WRITE, &pTask->level->lock);
pTask->level->taskSucceed++;
taskDone = pTask->level->taskSucceed + pTask->level->taskFailed;
SCH_UNLOCK(SCH_WRITE, &pTask->level->lock);
if (taskDone < pTask->level->taskNum) {
SCH_TASK_DLOG("wait all tasks, done:%d, all:%d", taskDone, pTask->level->taskNum);
return TSDB_CODE_SUCCESS;
} else if (taskDone > pTask->level->taskNum) {
SCH_TASK_ELOG("taskDone number invalid, done:%d, total:%d", taskDone, pTask->level->taskNum);
}
if (pTask->level->taskFailed > 0) {
SCH_RET(schSwitchJobStatus(pJob, JOB_TASK_STATUS_FAIL, 0));
} else {
SCH_RET(schSwitchJobStatus(pJob, JOB_TASK_STATUS_PART_SUCC, NULL));
}
} else {
pJob->resNode = pTask->succeedAddr;
}
pJob->fetchTask = pTask;
SCH_RET(schSwitchJobStatus(pJob, JOB_TASK_STATUS_PART_SUCC, NULL));
}
/*
if (SCH_IS_DATA_SRC_TASK(task) && job->dataSrcEps.numOfEps < SCH_MAX_CANDIDATE_EP_NUM) {
strncpy(job->dataSrcEps.fqdn[job->dataSrcEps.numOfEps], task->execAddr.fqdn, sizeof(task->execAddr.fqdn));
job->dataSrcEps.port[job->dataSrcEps.numOfEps] = task->execAddr.port;
++job->dataSrcEps.numOfEps;
}
*/
for (int32_t i = 0; i < parentNum; ++i) {
SSchTask *parent = *(SSchTask **)taosArrayGet(pTask->parents, i);
int32_t readyNum = atomic_add_fetch_32(&parent->childReady, 1);
SCH_LOCK(SCH_WRITE, &parent->lock);
SDownstreamSourceNode source = {.type = QUERY_NODE_DOWNSTREAM_SOURCE,
.taskId = pTask->taskId,
.schedId = schMgmt.sId,
.execId = pTask->execId,
.addr = pTask->succeedAddr};
qSetSubplanExecutionNode(parent->plan, pTask->plan->id.groupId, &source);
SCH_UNLOCK(SCH_WRITE, &parent->lock);
if (SCH_TASK_READY_FOR_LAUNCH(readyNum, parent)) {
SCH_TASK_DLOG("all %d children task done, start to launch parent task 0x%" PRIx64, readyNum, parent->taskId);
SCH_ERR_RET(schLaunchTask(pJob, parent));
}
}
SCH_ERR_RET(schLaunchJobLowerLevel(pJob, pTask));
return TSDB_CODE_SUCCESS;
}
int32_t schRescheduleTask(SSchJob *pJob, SSchTask *pTask) {
if (SCH_IS_DATA_SRC_QRY_TASK(pTask)) {
return TSDB_CODE_SUCCESS;
}
if (SCH_TASK_TIMEOUT(pTask) && JOB_TASK_STATUS_EXEC == pTask->status &&
pJob->fetchTask != pTask && taosArrayGetSize(pTask->candidateAddrs) > 1) {
SCH_TASK_DLOG("task execId %d will be rescheduled now", pTask->execId);
schDropTaskOnExecNode(pJob, pTask);
taosHashClear(pTask->execNodes);
SCH_ERR_RET(schProcessOnTaskFailure(pJob, pTask, TSDB_CODE_SCH_TIMEOUT_ERROR));
}
return TSDB_CODE_SUCCESS;
}
int32_t schDoTaskRedirect(SSchJob *pJob, SSchTask *pTask, SDataBuf* pData, int32_t rspCode) {
int32_t code = 0;
if ((pTask->execId + 1) >= pTask->maxExecTimes) {
SCH_TASK_DLOG("task no more retry since reach max try times, execId:%d", pTask->execId);
schSwitchJobStatus(pJob, JOB_TASK_STATUS_FAIL, (void*)rspCode);
return TSDB_CODE_SUCCESS;
}
SCH_TASK_DLOG("task will be redirected now, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
schDropTaskOnExecNode(pJob, pTask);
taosHashClear(pTask->execNodes);
SCH_ERR_JRET(schRemoveTaskFromExecList(pJob, pTask));
schDeregisterTaskHb(pJob, pTask);
atomic_sub_fetch_32(&pTask->level->taskLaunchedNum, 1);
taosMemoryFreeClear(pTask->msg);
pTask->msgLen = 0;
pTask->lastMsgType = 0;
memset(&pTask->succeedAddr, 0, sizeof(pTask->succeedAddr));
if (SCH_IS_DATA_SRC_QRY_TASK(pTask)) {
if (pData) {
SCH_ERR_JRET(schUpdateTaskCandidateAddr(pJob, pTask, pData->pEpSet));
}
if (SCH_TASK_NEED_FLOW_CTRL(pJob, pTask)) {
if (JOB_TASK_STATUS_EXEC == SCH_GET_TASK_STATUS(pTask)) {
SCH_ERR_JRET(schLaunchTasksInFlowCtrlList(pJob, pTask));
}
}
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_INIT);
SCH_ERR_JRET(schLaunchTask(pJob, pTask));
return TSDB_CODE_SUCCESS;
}
// merge plan
pTask->childReady = 0;
qClearSubplanExecutionNode(pTask->plan);
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_INIT);
int32_t childrenNum = taosArrayGetSize(pTask->children);
for (int32_t i = 0; i < childrenNum; ++i) {
SSchTask* pChild = taosArrayGetP(pTask->children, i);
SCH_LOCK_TASK(pChild);
schDoTaskRedirect(pJob, pChild, NULL, rspCode);
SCH_UNLOCK_TASK(pChild);
}
return TSDB_CODE_SUCCESS;
_return:
SCH_RET(schProcessOnTaskFailure(pJob, pTask, code));
}
int32_t schHandleRedirect(SSchJob *pJob, SSchTask *pTask, SDataBuf* pData, int32_t rspCode) {
int32_t code = 0;
if (SCH_IS_DATA_SRC_QRY_TASK(pTask)) {
if (NULL == pData->pEpSet) {
SCH_TASK_ELOG("no epset updated while got error %s", tstrerror(rspCode));
SCH_ERR_JRET(rspCode);
}
}
SCH_RET(schDoTaskRedirect(pJob, pTask, pData, rspCode));
_return:
SCH_RET(schProcessOnTaskFailure(pJob, pTask, code));
}
int32_t schPushTaskToExecList(SSchJob *pJob, SSchTask *pTask) {
int32_t code = taosHashPut(pJob->execTasks, &pTask->taskId, sizeof(pTask->taskId), &pTask, POINTER_BYTES);
if (0 != code) {
if (HASH_NODE_EXIST(code)) {
SCH_TASK_ELOG("task already in execTask list, code:%x", code);
SCH_ERR_RET(TSDB_CODE_SCH_INTERNAL_ERROR);
}
SCH_TASK_ELOG("taosHashPut task to execTask list failed, errno:%d", errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
SCH_TASK_DLOG("task added to execTask list, numOfTasks:%d", taosHashGetSize(pJob->execTasks));
return TSDB_CODE_SUCCESS;
}
/*
int32_t schMoveTaskToSuccList(SSchJob *pJob, SSchTask *pTask, bool *moved) {
if (0 != taosHashRemove(pJob->execTasks, &pTask->taskId, sizeof(pTask->taskId))) {
SCH_TASK_WLOG("remove task from execTask list failed, may not exist, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
} else {
SCH_TASK_DLOG("task removed from execTask list, numOfTasks:%d", taosHashGetSize(pJob->execTasks));
}
int32_t code = taosHashPut(pJob->succTasks, &pTask->taskId, sizeof(pTask->taskId), &pTask, POINTER_BYTES);
if (0 != code) {
if (HASH_NODE_EXIST(code)) {
*moved = true;
SCH_TASK_ELOG("task already in succTask list, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
}
SCH_TASK_ELOG("taosHashPut task to succTask list failed, errno:%d", errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
*moved = true;
SCH_TASK_DLOG("task moved to succTask list, numOfTasks:%d", taosHashGetSize(pJob->succTasks));
return TSDB_CODE_SUCCESS;
}
int32_t schMoveTaskToFailList(SSchJob *pJob, SSchTask *pTask, bool *moved) {
*moved = false;
if (0 != taosHashRemove(pJob->execTasks, &pTask->taskId, sizeof(pTask->taskId))) {
SCH_TASK_WLOG("remove task from execTask list failed, may not exist, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
}
int32_t code = taosHashPut(pJob->failTasks, &pTask->taskId, sizeof(pTask->taskId), &pTask, POINTER_BYTES);
if (0 != code) {
if (HASH_NODE_EXIST(code)) {
*moved = true;
SCH_TASK_WLOG("task already in failTask list, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
}
SCH_TASK_ELOG("taosHashPut task to failTask list failed, errno:%d", errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
*moved = true;
SCH_TASK_DLOG("task moved to failTask list, numOfTasks:%d", taosHashGetSize(pJob->failTasks));
return TSDB_CODE_SUCCESS;
}
int32_t schMoveTaskToExecList(SSchJob *pJob, SSchTask *pTask, bool *moved) {
if (0 != taosHashRemove(pJob->succTasks, &pTask->taskId, sizeof(pTask->taskId))) {
SCH_TASK_WLOG("remove task from succTask list failed, may not exist, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
}
int32_t code = taosHashPut(pJob->execTasks, &pTask->taskId, sizeof(pTask->taskId), &pTask, POINTER_BYTES);
if (0 != code) {
if (HASH_NODE_EXIST(code)) {
*moved = true;
SCH_TASK_ELOG("task already in execTask list, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
SCH_ERR_RET(TSDB_CODE_SCH_STATUS_ERROR);
}
SCH_TASK_ELOG("taosHashPut task to execTask list failed, errno:%d", errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
*moved = true;
SCH_TASK_DLOG("task moved to execTask list, numOfTasks:%d", taosHashGetSize(pJob->execTasks));
return TSDB_CODE_SUCCESS;
}
*/
int32_t schTaskCheckSetRetry(SSchJob *pJob, SSchTask *pTask, int32_t errCode, bool *needRetry) {
if (TSDB_CODE_SCH_TIMEOUT_ERROR == errCode) {
pTask->maxExecTimes++;
if (pTask->timeoutUsec < SCH_MAX_TASK_TIMEOUT_USEC) {
pTask->timeoutUsec *= 2;
if (pTask->timeoutUsec > SCH_MAX_TASK_TIMEOUT_USEC) {
pTask->timeoutUsec = SCH_MAX_TASK_TIMEOUT_USEC;
}
}
}
if ((pTask->execId + 1) >= pTask->maxExecTimes) {
*needRetry = false;
SCH_TASK_DLOG("task no more retry since reach max try times, execId:%d", pTask->execId);
return TSDB_CODE_SUCCESS;
}
if (!SCH_NEED_RETRY(pTask->lastMsgType, errCode)) {
*needRetry = false;
SCH_TASK_DLOG("task no more retry cause of errCode, errCode:%x - %s", errCode, tstrerror(errCode));
return TSDB_CODE_SUCCESS;
}
if (SCH_IS_DATA_SRC_TASK(pTask)) {
if ((pTask->execId + 1) >= SCH_TASK_NUM_OF_EPS(&pTask->plan->execNode)) {
*needRetry = false;
SCH_TASK_DLOG("task no more retry since all ep tried, execId:%d, epNum:%d", pTask->execId,
SCH_TASK_NUM_OF_EPS(&pTask->plan->execNode));
return TSDB_CODE_SUCCESS;
}
} else {
int32_t candidateNum = taosArrayGetSize(pTask->candidateAddrs);
if ((pTask->candidateIdx + 1) >= candidateNum && (TSDB_CODE_SCH_TIMEOUT_ERROR != errCode)) {
*needRetry = false;
SCH_TASK_DLOG("task no more retry since all candiates tried, candidateIdx:%d, candidateNum:%d",
pTask->candidateIdx, candidateNum);
return TSDB_CODE_SUCCESS;
}
}
*needRetry = true;
SCH_TASK_DLOG("task need the %dth retry, errCode:%x - %s", pTask->execId + 1, errCode, tstrerror(errCode));
return TSDB_CODE_SUCCESS;
}
int32_t schHandleTaskRetry(SSchJob *pJob, SSchTask *pTask) {
atomic_sub_fetch_32(&pTask->level->taskLaunchedNum, 1);
SCH_ERR_RET(schRemoveTaskFromExecList(pJob, pTask));
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_INIT);
if (SCH_TASK_NEED_FLOW_CTRL(pJob, pTask)) {
SCH_ERR_RET(schLaunchTasksInFlowCtrlList(pJob, pTask));
}
schDeregisterTaskHb(pJob, pTask);
if (SCH_IS_DATA_SRC_TASK(pTask)) {
SCH_SWITCH_EPSET(&pTask->plan->execNode);
} else {
int32_t candidateNum = taosArrayGetSize(pTask->candidateAddrs);
if (++pTask->candidateIdx >= candidateNum) {
pTask->candidateIdx = 0;
}
}
SCH_ERR_RET(schLaunchTask(pJob, pTask));
return TSDB_CODE_SUCCESS;
}
int32_t schSetAddrsFromNodeList(SSchJob *pJob, SSchTask *pTask) {
int32_t addNum = 0;
int32_t nodeNum = 0;
if (pJob->nodeList) {
nodeNum = taosArrayGetSize(pJob->nodeList);
for (int32_t i = 0; i < nodeNum && addNum < SCH_MAX_CANDIDATE_EP_NUM; ++i) {
SQueryNodeLoad *nload = taosArrayGet(pJob->nodeList, i);
SQueryNodeAddr *naddr = &nload->addr;
if (NULL == taosArrayPush(pTask->candidateAddrs, naddr)) {
SCH_TASK_ELOG("taosArrayPush execNode to candidate addrs failed, addNum:%d, errno:%d", addNum, errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
SCH_TASK_DLOG("set %dth candidate addr, id %d, fqdn:%s, port:%d", i, naddr->nodeId, SCH_GET_CUR_EP(naddr)->fqdn, SCH_GET_CUR_EP(naddr)->port);
++addNum;
}
}
if (addNum <= 0) {
SCH_TASK_ELOG("no available execNode as candidates, nodeNum:%d", nodeNum);
SCH_ERR_RET(TSDB_CODE_TSC_NO_EXEC_NODE);
}
return TSDB_CODE_SUCCESS;
}
int32_t schSetTaskCandidateAddrs(SSchJob *pJob, SSchTask *pTask) {
if (NULL != pTask->candidateAddrs) {
return TSDB_CODE_SUCCESS;
}
pTask->candidateIdx = 0;
pTask->candidateAddrs = taosArrayInit(SCH_MAX_CANDIDATE_EP_NUM, sizeof(SQueryNodeAddr));
if (NULL == pTask->candidateAddrs) {
SCH_TASK_ELOG("taosArrayInit %d condidate addrs failed", SCH_MAX_CANDIDATE_EP_NUM);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
if (pTask->plan->execNode.epSet.numOfEps > 0) {
if (NULL == taosArrayPush(pTask->candidateAddrs, &pTask->plan->execNode)) {
SCH_TASK_ELOG("taosArrayPush execNode to candidate addrs failed, errno:%d", errno);
SCH_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
}
SCH_TASK_DLOG("use execNode in plan as candidate addr, numOfEps:%d", pTask->plan->execNode.epSet.numOfEps);
return TSDB_CODE_SUCCESS;
}
if (SCH_IS_DATA_SRC_QRY_TASK(pTask)) {
SCH_TASK_ELOG("no execNode specifed for data src task, numOfEps:%d", pTask->plan->execNode.epSet.numOfEps);
SCH_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
}
SCH_ERR_RET(schSetAddrsFromNodeList(pJob, pTask));
/*
for (int32_t i = 0; i < job->dataSrcEps.numOfEps && addNum < SCH_MAX_CANDIDATE_EP_NUM; ++i) {
strncpy(epSet->fqdn[epSet->numOfEps], job->dataSrcEps.fqdn[i], sizeof(job->dataSrcEps.fqdn[i]));
epSet->port[epSet->numOfEps] = job->dataSrcEps.port[i];
++epSet->numOfEps;
}
*/
return TSDB_CODE_SUCCESS;
}
int32_t schUpdateTaskCandidateAddr(SSchJob *pJob, SSchTask *pTask, SEpSet* pEpSet) {
if (NULL == pTask->candidateAddrs || 1 != taosArrayGetSize(pTask->candidateAddrs)) {
SCH_TASK_ELOG("not able to update cndidate addr, addr num %d", (int32_t)(pTask->candidateAddrs ? taosArrayGetSize(pTask->candidateAddrs): 0));
SCH_ERR_RET(TSDB_CODE_APP_ERROR);
}
SQueryNodeAddr* pAddr = taosArrayGet(pTask->candidateAddrs, 0);
SEp* pOld = &pAddr->epSet.eps[pAddr->epSet.inUse];
SEp* pNew = &pEpSet->eps[pEpSet->inUse];
SCH_TASK_DLOG("update task ep from %s:%d to %s:%d", pOld->fqdn, pOld->port, pNew->fqdn, pNew->port);
memcpy(&pAddr->epSet, pEpSet, sizeof(pAddr->epSet));
return TSDB_CODE_SUCCESS;
}
int32_t schRemoveTaskFromExecList(SSchJob *pJob, SSchTask *pTask) {
int32_t code = taosHashRemove(pJob->execTasks, &pTask->taskId, sizeof(pTask->taskId));
if (code) {
SCH_TASK_ELOG("task failed to rm from execTask list, code:%x", code);
SCH_ERR_RET(TSDB_CODE_SCH_INTERNAL_ERROR);
}
return TSDB_CODE_SUCCESS;
}
void schDropTaskOnExecNode(SSchJob *pJob, SSchTask *pTask) {
if (NULL == pTask->execNodes) {
SCH_TASK_DLOG("no exec address, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
return;
}
int32_t size = (int32_t)taosHashGetSize(pTask->execNodes);
if (size <= 0) {
SCH_TASK_DLOG("task has no execNodes, no need to drop it, status:%s", SCH_GET_TASK_STATUS_STR(pTask));
return;
}
SSchNodeInfo *nodeInfo = taosHashIterate(pTask->execNodes, NULL);
while (nodeInfo) {
SCH_SET_TASK_HANDLE(pTask, nodeInfo->handle);
schBuildAndSendMsg(pJob, pTask, &nodeInfo->addr, TDMT_SCH_DROP_TASK);
nodeInfo = taosHashIterate(pTask->execNodes, nodeInfo);
}
SCH_TASK_DLOG("task has been dropped on %d exec nodes", size);
}
int32_t schProcessOnTaskStatusRsp(SQueryNodeEpId* pEpId, SArray* pStatusList) {
int32_t taskNum = (int32_t)taosArrayGetSize(pStatusList);
SSchTask *pTask = NULL;
SSchJob *pJob = NULL;
qDebug("%d task status in hb rsp from nodeId:%d, fqdn:%s, port:%d", taskNum, pEpId->nodeId, pEpId->ep.fqdn, pEpId->ep.port);
for (int32_t i = 0; i < taskNum; ++i) {
STaskStatus *pStatus = taosArrayGet(pStatusList, i);
int32_t code = 0;
qDebug("QID:0x%" PRIx64 ",TID:0x%" PRIx64 ",EID:%d task status in server: %s",
pStatus->queryId, pStatus->taskId, pStatus->execId, jobTaskStatusStr(pStatus->status));
if (schProcessOnCbBegin(&pJob, &pTask, pStatus->queryId, pStatus->refId, pStatus->taskId)) {
continue;
}
if (pStatus->execId != pTask->execId) {
//TODO
SCH_TASK_DLOG("execId %d mis-match current execId %d", pStatus->execId, pTask->execId);
schProcessOnCbEnd(pJob, pTask, 0);
continue;
}
if (pStatus->status == JOB_TASK_STATUS_FAIL) {
// RECORD AND HANDLE ERROR!!!!
schProcessOnCbEnd(pJob, pTask, 0);
continue;
}
if (pStatus->status == JOB_TASK_STATUS_INIT) {
code = schRescheduleTask(pJob, pTask);
}
schProcessOnCbEnd(pJob, pTask, code);
}
return TSDB_CODE_SUCCESS;
}
int32_t schLaunchTaskImpl(SSchJob *pJob, SSchTask *pTask) {
int8_t status = 0;
int32_t code = 0;
atomic_add_fetch_32(&pTask->level->taskLaunchedNum, 1);
pTask->execId++;
SCH_TASK_DLOG("start to launch task's %dth exec", pTask->execId);
SCH_LOG_TASK_START_TS(pTask);
if (schJobNeedToStop(pJob, &status)) {
SCH_TASK_DLOG("no need to launch task cause of job status %s", jobTaskStatusStr(status));
SCH_ERR_RET(TSDB_CODE_SCH_IGNORE_ERROR);
}
// NOTE: race condition: the task should be put into the hash table before send msg to server
if (SCH_GET_TASK_STATUS(pTask) != JOB_TASK_STATUS_EXEC) {
SCH_ERR_RET(schPushTaskToExecList(pJob, pTask));
SCH_SET_TASK_STATUS(pTask, JOB_TASK_STATUS_EXEC);
}
SSubplan *plan = pTask->plan;
if (NULL == pTask->msg) { // TODO add more detailed reason for failure
code = qSubPlanToString(plan, &pTask->msg, &pTask->msgLen);
if (TSDB_CODE_SUCCESS != code) {
SCH_TASK_ELOG("failed to create physical plan, code:%s, msg:%p, len:%d", tstrerror(code), pTask->msg,
pTask->msgLen);
SCH_ERR_RET(code);
} else {
SCH_TASK_DLOGL("physical plan len:%d, %s", pTask->msgLen, pTask->msg);
}
}
SCH_ERR_RET(schSetTaskCandidateAddrs(pJob, pTask));
if (SCH_IS_QUERY_JOB(pJob)) {
SCH_ERR_RET(schEnsureHbConnection(pJob, pTask));
}
SCH_ERR_RET(schBuildAndSendMsg(pJob, pTask, NULL, plan->msgType));
return TSDB_CODE_SUCCESS;
}
// Note: no more error processing, handled in function internal
int32_t schLaunchTask(SSchJob *pJob, SSchTask *pTask) {
bool enough = false;
int32_t code = 0;
SCH_SET_TASK_HANDLE(pTask, NULL);
if (SCH_TASK_NEED_FLOW_CTRL(pJob, pTask)) {
SCH_ERR_JRET(schCheckIncTaskFlowQuota(pJob, pTask, &enough));
if (enough) {
SCH_ERR_JRET(schLaunchTaskImpl(pJob, pTask));
}
} else {
SCH_ERR_JRET(schLaunchTaskImpl(pJob, pTask));
}
return TSDB_CODE_SUCCESS;
_return:
SCH_RET(schProcessOnTaskFailure(pJob, pTask, code));
}
int32_t schLaunchLevelTasks(SSchJob *pJob, SSchLevel *level) {
SCH_ERR_RET(schChkJobNeedFlowCtrl(pJob, level));
for (int32_t i = 0; i < level->taskNum; ++i) {
SSchTask *pTask = taosArrayGet(level->subTasks, i);
SCH_ERR_RET(schLaunchTask(pJob, pTask));
}
return TSDB_CODE_SUCCESS;
}
void schDropTaskInHashList(SSchJob *pJob, SHashObj *list) {
if (!SCH_IS_NEED_DROP_JOB(pJob)) {
return;
}
void *pIter = taosHashIterate(list, NULL);
while (pIter) {
SSchTask *pTask = *(SSchTask **)pIter;
schDropTaskOnExecNode(pJob, pTask);
pIter = taosHashIterate(list, pIter);
}
}
// Note: no more error processing, handled in function internal
int32_t schLaunchFetchTask(SSchJob *pJob) {
int32_t code = 0;
void *resData = atomic_load_ptr(&pJob->resData);
if (resData) {
SCH_JOB_DLOG("res already fetched, res:%p", resData);
return TSDB_CODE_SUCCESS;
}
SCH_ERR_JRET(schBuildAndSendMsg(pJob, pJob->fetchTask, &pJob->resNode, TDMT_SCH_FETCH));
return TSDB_CODE_SUCCESS;
_return:
SCH_RET(schProcessOnTaskFailure(pJob, pJob->fetchTask, code));
}
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