sparksubmit在作业完成后继续挂起

Question

我试图在AWS中用hdfs测试spark1.6。我使用的是examples文件夹中提供的wordcount python示例。我用spark submit提交作业，作业成功完成，并在控制台上打印结果。web用户界面还显示其已完成。然而，spark提交永远不会终止。我已经验证了上下文在单词计数示例代码中也停止了。在

怎么了？在

这是我在控制台上看到的。在

6-05-24 14:58:04,749 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/stages/stage,null}
2016-05-24 14:58:04,749 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/stages/json,null}
2016-05-24 14:58:04,749 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/stages,null}
2016-05-24 14:58:04,749 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/jobs/job/json,null}
2016-05-24 14:58:04,750 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/jobs/job,null}
2016-05-24 14:58:04,750 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/jobs/json,null}
2016-05-24 14:58:04,750 INFO  [Thread-3] handler.ContextHandler (ContextHandler.java:doStop(843)) - stopped o.s.j.s.ServletContextHandler{/jobs,null}
2016-05-24 14:58:04,802 INFO  [Thread-3] ui.SparkUI (Logging.scala:logInfo(58)) - Stopped Spark web UI at http://172.30.2.239:4040
2016-05-24 14:58:04,805 INFO  [Thread-3] cluster.SparkDeploySchedulerBackend (Logging.scala:logInfo(58)) - Shutting down all executors
2016-05-24 14:58:04,805 INFO  [dispatcher-event-loop-2] cluster.SparkDeploySchedulerBackend (Logging.scala:logInfo(58)) - Asking each executor to shut down
2016-05-24 14:58:04,814 INFO  [dispatcher-event-loop-5] spark.MapOutputTrackerMasterEndpoint (Logging.scala:logInfo(58)) - MapOutputTrackerMasterEndpoint stopped!
2016-05-24 14:58:04,818 INFO  [Thread-3] storage.MemoryStore (Logging.scala:logInfo(58)) - MemoryStore cleared
2016-05-24 14:58:04,818 INFO  [Thread-3] storage.BlockManager (Logging.scala:logInfo(58)) - BlockManager stopped
2016-05-24 14:58:04,820 INFO  [Thread-3] storage.BlockManagerMaster (Logging.scala:logInfo(58)) - BlockManagerMaster stopped
2016-05-24 14:58:04,821 INFO  [dispatcher-event-loop-3] scheduler.OutputCommitCoordinator$OutputCommitCoordinatorEndpoint (Logging.scala:logInfo(58)) - OutputCommitCoordinator stopped!
2016-05-24 14:58:04,824 INFO  [Thread-3] spark.SparkContext (Logging.scala:logInfo(58)) - Successfully stopped SparkContext
2016-05-24 14:58:04,827 INFO  [sparkDriverActorSystem-akka.actor.default-dispatcher-2] remote.RemoteActorRefProvider$RemotingTerminator (Slf4jLogger.scala:apply$mcV$sp(74)) - Shutting down remote daemon.
2016-05-24 14:58:04,828 INFO  [sparkDriverActorSystem-akka.actor.default-dispatcher-2] remote.RemoteActorRefProvider$RemotingTerminator (Slf4jLogger.scala:apply$mcV$sp(74)) - Remote daemon shut down; proceeding with flushing remote transports.
2016-05-24 14:58:04,843 INFO  [sparkDriverActorSystem-akka.actor.default-dispatcher-2] remote.RemoteActorRefProvider$RemotingTerminator (Slf4jLogger.scala:apply$mcV$sp(74)) - Remoting shut down.

我必须执行ctrl-c来终止spark提交过程。这真是个奇怪的问题，我不知道该怎么解决。请让我知道，如果有任何日志，我应该看看，或做的事情在这里不同。在

以下是spark submit过程jstack输出的pastebin链接： http://pastebin.com/Nfnt4XmT

Answer 1

我的spark作业代码中的自定义线程池也有相同的问题。我发现spark submit在代码中使用自定义非守护线程池而挂起。 您可以检查^{}以了解spark开发人员如何创建线程池，或者可以使用此实用程序，但要小心，因为它们是包专用的。在