}
else if (event.getType() == TaskCleaner.EventType.TASK_CLEAN) {
TaskAttemptId aId = ((TaskCleanupEvent) event).getAttemptID();
LOG.debug("TASK_CLEAN");
actualHandler.handle(new TaskAttemptEvent(aId,
TaskAttemptEventType.TA_CLEANUP_DONE));
return;
}
else if (event.getType() == ContainerLauncher.EventType.CONTAINER_REMOTE_LAUNCH) {
TaskAttemptId aId = ((ContainerRemoteLaunchEvent) event)
.getTaskAttemptID();
TaskAttemptInfo attInfo = getTaskAttemptInfo(aId);
actualHandler.handle(new TaskAttemptContainerLaunchedEvent(aId,
attInfo.getShufflePort()));
// send the status update event
sendStatusUpdateEvent(aId, attInfo);
TaskAttemptState state = TaskAttemptState.valueOf(attInfo.getTaskStatus());
switch (state) {
case SUCCEEDED:
//recover the task output
TaskAttemptContext taskContext = new TaskAttemptContextImpl(getConfig(),
attInfo.getAttemptId());
try {
TaskType type = taskContext.getTaskAttemptID().getTaskID().getTaskType();
int numReducers = taskContext.getConfiguration().getInt(MRJobConfig.NUM_REDUCES, 1);
if(type == TaskType.REDUCE || (type == TaskType.MAP && numReducers <= 0)) {
committer.recoverTask(taskContext);
LOG.info("Recovered output from task attempt " + attInfo.getAttemptId());
} else {
LOG.info("Will not try to recover output for "
+ taskContext.getTaskAttemptID());
}
} catch (IOException e) {
LOG.error("Caught an exception while trying to recover task "+aId, e);
actualHandler.handle(new JobDiagnosticsUpdateEvent(
aId.getTaskId().getJobId(), "Error in recovering task output " +
e.getMessage()));
actualHandler.handle(new JobEvent(aId.getTaskId().getJobId(),
JobEventType.INTERNAL_ERROR));
}
// send the done event
LOG.info("Sending done event to recovered attempt " + aId);
actualHandler.handle(new TaskAttemptEvent(aId,
TaskAttemptEventType.TA_DONE));
break;
case KILLED:
LOG.info("Sending kill event to recovered attempt " + aId);
actualHandler.handle(new TaskAttemptEvent(aId,
TaskAttemptEventType.TA_KILL));
break;
default:
LOG.info("Sending fail event to recovered attempt " + aId);
actualHandler.handle(new TaskAttemptEvent(aId,
TaskAttemptEventType.TA_FAILMSG));
break;
}
return;
}
else if (event.getType() ==
ContainerLauncher.EventType.CONTAINER_REMOTE_CLEANUP) {
TaskAttemptId aId = ((ContainerLauncherEvent) event)
.getTaskAttemptID();
actualHandler.handle(
new TaskAttemptEvent(aId,
TaskAttemptEventType.TA_CONTAINER_CLEANED));
return;
}
// delegate to the actual handler