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https://issues.apache.org/jira/browse/KAFKA-1815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14244302#comment-14244302
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Chris Cope commented on KAFKA-1815:
-----------------------------------
Unexpectedly, this was fixed by
https://github.com/apache/kafka/commit/e8ffbd0fee0bc715ad0fe6c9afe85715f84d8e51
that [~joestein] committed to fix KAFKA-1812. I'm looking through his commit
and don't see why it would fix this bug, but the test results don't lie.
> ServerShutdownTest fails in trunk.
> ----------------------------------
>
> Key: KAFKA-1815
> URL: https://issues.apache.org/jira/browse/KAFKA-1815
> Project: Kafka
> Issue Type: Bug
> Reporter: Anatoly Fayngelerin
> Priority: Minor
> Attachments: shutdown_test_fix.patch
>
>
> I ran into these failures consistently when trying to build Kafka locally:
> kafka.server.ServerShutdownTest > testCleanShutdown FAILED
> java.lang.NullPointerException
> at
> kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
> at
> kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
> at
> scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:114)
> at
> scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:113)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
> at
> scala.collection.TraversableOnce$class.count(TraversableOnce.scala:113)
> at scala.collection.mutable.ArrayOps$ofRef.count(ArrayOps.scala:105)
> at
> kafka.server.ServerShutdownTest.verifyNonDaemonThreadsStatus(ServerShutdownTest.scala:147)
> at
> kafka.server.ServerShutdownTest.testCleanShutdown(ServerShutdownTest.scala:101)
> kafka.server.ServerShutdownTest > testCleanShutdownWithDeleteTopicEnabled
> FAILED
> java.lang.NullPointerException
> at
> kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
> at
> kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
> at
> scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:114)
> at
> scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:113)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
> at
> scala.collection.TraversableOnce$class.count(TraversableOnce.scala:113)
> at scala.collection.mutable.ArrayOps$ofRef.count(ArrayOps.scala:105)
> at
> kafka.server.ServerShutdownTest.verifyNonDaemonThreadsStatus(ServerShutdownTest.scala:147)
> at
> kafka.server.ServerShutdownTest.testCleanShutdownWithDeleteTopicEnabled(ServerShutdownTest.scala:114)
> kafka.server.ServerShutdownTest > testCleanShutdownAfterFailedStartup FAILED
> java.lang.NullPointerException
> at
> kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
> at
> kafka.server.ServerShutdownTest$$anonfun$verifyNonDaemonThreadsStatus$2.apply(ServerShutdownTest.scala:147)
> at
> scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:114)
> at
> scala.collection.TraversableOnce$$anonfun$count$1.apply(TraversableOnce.scala:113)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:105)
> at
> scala.collection.TraversableOnce$class.count(TraversableOnce.scala:113)
> at scala.collection.mutable.ArrayOps$ofRef.count(ArrayOps.scala:105)
> at
> kafka.server.ServerShutdownTest.verifyNonDaemonThreadsStatus(ServerShutdownTest.scala:147)
> at
> kafka.server.ServerShutdownTest.testCleanShutdownAfterFailedStartup(ServerShutdownTest.scala:141)
> It looks like Jenkins also had issues with these tests:
> https://builds.apache.org/job/Kafka-trunk/351/console
> I would like to provide a patch that fixes this.
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