本文整理汇总了Java中org.apache.hadoop.mapreduce.v2.app.job.TaskStateInternal.SCHEDULED属性的典型用法代码示例。如果您正苦于以下问题：Java TaskStateInternal.SCHEDULED属性的具体用法？Java TaskStateInternal.SCHEDULED怎么用？Java TaskStateInternal.SCHEDULED使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.hadoop.mapreduce.v2.app.job.TaskStateInternal的用法示例。
在下文中一共展示了TaskStateInternal.SCHEDULED属性的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: transition
@Override
public TaskStateInternal transition(TaskImpl task, TaskEvent event) {
TaskAttemptId attemptId = null;
if (event instanceof TaskTAttemptEvent) {
TaskTAttemptEvent castEvent = (TaskTAttemptEvent) event;
attemptId = castEvent.getTaskAttemptID();
if (task.getInternalState() == TaskStateInternal.SUCCEEDED &&
!attemptId.equals(task.successfulAttempt)) {
// don't allow a different task attempt to override a previous
// succeeded state
task.finishedAttempts.add(castEvent.getTaskAttemptID());
task.inProgressAttempts.remove(castEvent.getTaskAttemptID());
return TaskStateInternal.SUCCEEDED;
}
}
// a successful REDUCE task should not be overridden
// TODO: consider moving it to MapTaskImpl
if (!TaskType.MAP.equals(task.getType())) {
LOG.error("Unexpected event for REDUCE task " + event.getType());
task.internalError(event.getType());
}
// successful attempt is now killed. reschedule
// tell the job about the rescheduling
unSucceed(task);
task.handleTaskAttemptCompletion(attemptId,
TaskAttemptCompletionEventStatus.KILLED);
task.eventHandler.handle(new JobMapTaskRescheduledEvent(task.taskId));
// typically we are here because this map task was run on a bad node and
// we want to reschedule it on a different node.
// Depending on whether there are previous failed attempts or not this
// can SCHEDULE or RESCHEDULE the container allocate request. If this
// SCHEDULE's then the dataLocal hosts of this taskAttempt will be used
// from the map splitInfo. So the bad node might be sent as a location
// to the RM. But the RM would ignore that just like it would ignore
// currently pending container requests affinitized to bad nodes.
task.addAndScheduleAttempt(Avataar.VIRGIN);
return TaskStateInternal.SCHEDULED;
}
示例2: getDefaultState
@Override
protected TaskStateInternal getDefaultState(TaskImpl task) {
return TaskStateInternal.SCHEDULED;
}
示例3: transition
@Override
public TaskStateInternal transition(TaskImpl task, TaskEvent event) {
TaskAttemptId attemptId = null;
if (event instanceof TaskTAttemptEvent) {
TaskTAttemptEvent castEvent = (TaskTAttemptEvent) event;
attemptId = castEvent.getTaskAttemptID();
if (task.getInternalState() == TaskStateInternal.SUCCEEDED &&
!attemptId.equals(task.successfulAttempt)) {
// don't allow a different task attempt to override a previous
// succeeded state
task.finishedAttempts.add(castEvent.getTaskAttemptID());
task.inProgressAttempts.remove(castEvent.getTaskAttemptID());
return TaskStateInternal.SUCCEEDED;
}
}
// a successful REDUCE task should not be overridden
// TODO: consider moving it to MapTaskImpl
if (!TaskType.MAP.equals(task.getType())) {
LOG.error("Unexpected event for REDUCE task " + event.getType());
task.internalError(event.getType());
}
// successful attempt is now killed. reschedule
// tell the job about the rescheduling
unSucceed(task);
task.handleTaskAttemptCompletion(attemptId,
TaskAttemptCompletionEventStatus.KILLED);
task.eventHandler.handle(new JobMapTaskRescheduledEvent(task.taskId));
// typically we are here because this map task was run on a bad node and
// we want to reschedule it on a different node.
// Depending on whether there are previous failed attempts or not this
// can SCHEDULE or RESCHEDULE the container allocate request. If this
// SCHEDULE's then the dataLocal hosts of this taskAttempt will be used
// from the map splitInfo. So the bad node might be sent as a location
// to the RM. But the RM would ignore that just like it would ignore
// currently pending container requests affinitized to bad nodes.
boolean rescheduleNextTaskAttempt = false;
if (event instanceof TaskTAttemptKilledEvent) {
// Decide whether to reschedule next task attempt. If true, this
// typically indicates that a successful map attempt was killed on an
// unusable node being reported.
rescheduleNextTaskAttempt =
((TaskTAttemptKilledEvent)event).getRescheduleAttempt();
}
task.addAndScheduleAttempt(Avataar.VIRGIN, rescheduleNextTaskAttempt);
return TaskStateInternal.SCHEDULED;
}