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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2017/03/09 12:09:37 UTC
[jira] [Resolved] (SPARK-19883) Executor is waiting for lock
[ https://issues.apache.org/jira/browse/SPARK-19883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen resolved SPARK-19883.
-------------------------------
Resolution: Invalid
This is entirely normal. It's what you see whenever anything is waiting on a lock in the JVM. Before opening a JIRA, please assemble a more complete description of a problem, not just a detail of a symptom. This however isn't even a problem.
> Executor is waiting for lock
> ----------------------------
>
> Key: SPARK-19883
> URL: https://issues.apache.org/jira/browse/SPARK-19883
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.1.0
> Reporter: hustfxj
> Attachments: jstack
>
>
> {code:borderStyle=solid}
> "Executor task launch worker for task 4808985" #5373 daemon prio=5 os_prio=0 tid=0x00007f54ef437000 nid=0x1aed0 waiting on condition [0x00007f53aebfe000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x0000000498c249c0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:189)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:332)
> at org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:58)
> at scala.collection.Iterator$$anon$12.nextCur(Iterator.scala:434)
> at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:440)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at org.apache.spark.util.CompletionIterator.hasNext(CompletionIterator.scala:32)
> at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
> at org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:199)
> at org.apache.spark.shuffle.sort.SortShuffleWriter.write(SortShuffleWriter.scala:63)
> at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:97)
> at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:54)
> at org.apache.spark.scheduler.Task.run(Task.scala:114)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:323)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
> at java.lang.Thread.run(Thread.java:834)
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