// 做合并和导出，重置任务的检查操作
// 所有任务一起来轮询，对Master来讲，有点资源浪费
// 可以通过以下几种方式改进：
// 1、针对job的属性设置监听器，Listener模式
// 2、使用Observer模式
protected void mergeAndExportJobs() {
Iterator<Map.Entry<String, Job>> iter = jobs.entrySet().iterator();
while (iter.hasNext()) {
Job job = iter.next().getValue();
if (job.getRebuildTag() == 2) {
job.rebuild(0, null, this);
continue;
}
if (!job.getJobTimeOut().get()) {
// 需要合并该job的task
if (!job.isMerging().get() && job.needMerge()) {
logger.warn(
"job "
+ job.getJobName()
+ " complete tasks:"
+ job.getCompletedTaskCount().get()
+ ", merged tasks :"
+ job.getMergedTaskCount().get());
final Job j = job;
final BlockingQueue<JobMergedResult> branchResultQueue =
branchResultQueuePool.get(j.getJobName());
final BlockingQueue<JobTaskResult> jobTaskResultsQueue =
jobTaskResultsQueuePool.get(j.getJobName());
if (j.isMerging().compareAndSet(false, true))
eventProcessThreadPool.execute(
new Runnable() {
public void run() {
try {
jobResultMerger.merge(j, branchResultQueue, jobTaskResultsQueue, true);
} catch (Throwable e) {
logger.error(e);
} finally {
j.isMerging().set(false);
}
}
});
}
} else {
// 判断是否还有和主干合并的线程，如果没有可以设置完成标识
boolean gotIt = job.getTrunkLock().writeLock().tryLock();
if (gotIt) {
try {
if (!job.isMerged().get()) {
List<Map<String, Map<String, Object>>> mergeResults =
new ArrayList<Map<String, Map<String, Object>>>();
new MergeJobOperation(
job, 0, mergeResults, config, branchResultQueuePool.get(job.getJobName()))
.run();
job.isMerged().set(true);
logger.warn("job is timeout, last merge trunk success!");
}
} finally {
job.getTrunkLock().writeLock().unlock();
}
}
}
// 需要导出该job的数据
if (!job.isExporting().get() && job.needExport()) {
final Job j = job;
if (j.isExporting().compareAndSet(false, true))
eventProcessThreadPool.execute(
new Runnable() {
public void run() {
try {
// 虽然是多线程，但还是阻塞模式来做
jobExporter.exportReport(j, false);
j.isExported().set(true);
} catch (Throwable e) {
logger.error(e);
} finally {
j.isExporting().set(false);
}
// 判断是否需要开始导出中间结果,放在外部不妨碍下一次的处理
exportOrCleanTrunk(j);
}
});
if (job.getRebuildTag() == -1) {
job.rebuild(0, null, this);
iter.remove();
}
if (job.getRebuildTag() == 1) {
job.rebuild(0, null, this);
}
}
// 做一次任务处理时间判断，如果超时将设置job的超时状态位置
job.checkJobTimeOut();
// 任务是否需要被重置
if (job.needReset()) {
if (logger.isWarnEnabled()) logger.warn("job " + job.getJobName() + " be reset now.");
StringBuilder sb =
new StringBuilder(ReportUtil.MASTER_LOG)
.append(",")
.append(System.currentTimeMillis())
.append(",");
sb.append(job.getEpoch())
.append(",")
.append(job.getJobName())
.append(",")
.append(System.currentTimeMillis() - job.getStartTime())
.append(",")
.append(job.getJobMergeTime().get())
.append(",")
.append(job.getJobExportTime())
.append(",")
.append(job.getTaskCount())
.append(",")
.append(job.getCompletedTaskCount().get())
.append(",")
.append(job.getMergedTaskCount().get())
.append(",")
.append(job.getJobMergeBranchCount().get());
ReportUtil.clusterLog(sb.toString());
job.reset(this);
if (logger.isInfoEnabled()) {
sb =
new StringBuilder("jobManager:{jobs:")
.append(jobs.size())
.append(",jobTaskPool:" + jobTaskPool.size());
sb.append(",statusPool:")
.append(statusPool.size())
.append(",undoTasks:")
.append(undoTaskQueue.size())
.append("}");
logger.info(sb.toString());
}
List<JobTask> tasks = job.getJobTasks();
for (JobTask task : tasks) {
statusPool.put(task.getTaskId(), task.getStatus());
}
}
}
}
// 分配任务和结果提交处理由于是单线程处理，
// 因此本身不用做状态池并发控制，将消耗较多的发送操作交给ServerConnector多线程操作
@Override
public void addTaskResultToQueue(SendResultsRequestEvent jobResponseEvent) {
JobTaskResult jobTaskResult = jobResponseEvent.getJobTaskResult();
if (jobTaskResult.getTaskIds() != null && jobTaskResult.getTaskIds().size() > 0) {
// 判断是否是过期的一些老任务数据，根据task和taskresult的createtime来判断
// 以后要扩展成为如果发现当前的epoch < 结果的epoch，表明这台可能是从属的master，负责reduce，但是速度跟不上了
if (jobTaskPool.get(jobTaskResult.getTaskIds().get(0)) == null) {
logger.error("jobTask is null " + jobTaskResult.getTaskIds().get(0));
}
if (jobTaskResult.getJobEpoch()
!= jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobEpoch()) {
if (jobTaskResult.getJobEpoch()
< jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobEpoch()) {
logger.error(
"old task result will be discard! job:"
+ jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobName()
+ ",epoch:"
+ jobTaskResult.getJobEpoch()
+ ",slave:"
+ jobResponseEvent.getChannel());
masterNode.echoSendJobTaskResults(
jobResponseEvent.getSequence(), "success", jobResponseEvent.getChannel());
return;
} else {
// 给一定的容忍时间，暂时定为5秒
jobs.get(jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobName())
.blockToResetJob(15000);
if (jobTaskResult.getJobEpoch()
> jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobEpoch()) {
logger.error(
"otherMaster can't merge in time!job:"
+ jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobName());
masterNode.echoSendJobTaskResults(
jobResponseEvent.getSequence(), "success", jobResponseEvent.getChannel());
return;
}
}
}
if (logger.isWarnEnabled()) {
StringBuilder ts =
new StringBuilder("Receive slave analysis result, jobTaskIds : ")
.append(jobTaskResult.toString())
.append(", ")
.append(jobTaskResult.getTaskIds().size());
logger.warn(ts.toString());
}
// 先放入队列，防止小概率多线程并发问题
jobTaskResultsQueuePool
.get(jobTaskPool.get(jobTaskResult.getTaskIds().get(0)).getJobName())
.offer(jobTaskResult);
for (int i = 0; i < jobTaskResult.getTaskIds().size(); i++) {
String taskId = jobTaskResult.getTaskIds().get(i);
JobTask jobTask = jobTaskPool.get(taskId);
if (jobTask == null) {
logger.error(
new StringBuilder("taskId :").append(taskId).append("not exist!").toString());
continue;
}
Job job = jobs.get(jobTask.getJobName());
if (job == null) {
logger.error(
new StringBuilder("job :")
.append(jobTask.getJobName())
.append("not exist!")
.toString());
continue;
}
if (statusPool.replace(taskId, JobTaskStatus.DOING, JobTaskStatus.DONE)
|| statusPool.replace(taskId, JobTaskStatus.UNDO, JobTaskStatus.DONE)) {
logger.info("task " + jobTask.getJobName() + " of job " + job.getJobName() + " done");
jobTask.setStatus(JobTaskStatus.DONE);
jobTask.setEndTime(System.currentTimeMillis());
jobTask.setLastMergedEpoch(job.getEpoch().get());
job.getCompletedTaskCount().incrementAndGet();
}
// 对jobTask的执行结果打点
StringBuilder log =
new StringBuilder(ReportUtil.SLAVE_LOG)
.append(",")
.append(System.currentTimeMillis())
.append(",")
.append(job.getEpoch())
.append(",");
log.append(jobTask.getJobName())
.append(",")
.append(jobTask.getTaskId())
.append(",")
.append(jobTask.getRecycleCounter().get())
.append(",")
.append(jobTaskResult.getSlaveIp())
.append(",")
.append(jobTaskResult.getEfficiency())
.append(",");
JobTaskExecuteInfo executeInfo =
jobTaskResult.getTaskExecuteInfos().get(jobTask.getTaskId());
if (executeInfo != null)
log.append(executeInfo.getAnalysisConsume())
.append(",")
.append(executeInfo.getJobDataSize())
.append(",")
.append(executeInfo.getTotalLine())
.append(",")
.append(executeInfo.getErrorLine())
.append(",")
.append(executeInfo.getEmptyLine());
else
logger.error(
new StringBuilder()
.append("taskId : ")
.append(jobTask.getTaskId())
.append(" executeInfo is null!")
.toString());
ReportUtil.clusterLog(log.toString());
}
}
// 是否需要用异步方式发送，减少对jobManager事件处理延时
if (config.isUseAsynModeToSendResponse()) {
final String sequence = jobResponseEvent.getSequence();
final Object channel = jobResponseEvent.getChannel();
eventProcessThreadPool.execute(
new Runnable() {
public void run() {
try {
masterNode.echoSendJobTaskResults(sequence, "success", channel);
} catch (Throwable e) {
logger.error(e);
}
}
});
} else
masterNode.echoSendJobTaskResults(
jobResponseEvent.getSequence(), "success", jobResponseEvent.getChannel());
}
