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https://issues.apache.org/jira/browse/DRILL-2510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14372268#comment-14372268
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Chris Westin commented on DRILL-2510:
-------------------------------------
Since the problems were in "mvn install" tests, I didn't run the precommit
suite before submitting the review. I'm running it now just to be sure, in case
we want to wait for that.
> Unclosed allocators detected in Java shutdown hook
> --------------------------------------------------
>
> Key: DRILL-2510
> URL: https://issues.apache.org/jira/browse/DRILL-2510
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Affects Versions: 0.7.0
> Reporter: Chris Westin
> Assignee: Jacques Nadeau
> Fix For: 0.8.0
>
> Attachments: DRILL-2510.1.patch.txt
>
>
> We're seeing errors in logs that look like this:
> {code}
> Exception in thread "Drillbit-ShutdownHook#1"
> java.lang.IllegalStateException: Failure while trying to close allocator:
> Child level allocators not closed. Stack trace:
> java.lang.Thread.getStackTrace(Thread.java:1589)
>
> org.apache.drill.exec.memory.TopLevelAllocator.getChildAllocator(TopLevelAllocator.java:126)
>
> org.apache.drill.exec.ops.FragmentContext.<init>(FragmentContext.java:111)
>
> org.apache.drill.exec.work.foreman.Foreman.setupRootFragment(Foreman.java:763)
>
> org.apache.drill.exec.work.foreman.Foreman.runPhysicalPlan(Foreman.java:349)
>
> org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:737)
>
> org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:202)
>
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> java.lang.Thread.run(Thread.java:745)
> at
> org.apache.drill.exec.memory.TopLevelAllocator.close(TopLevelAllocator.java:159)
> at
> org.apache.drill.exec.server.BootStrapContext.close(BootStrapContext.java:75)
> at com.google.common.io.Closeables.close(Closeables.java:77)
> at com.google.common.io.Closeables.closeQuietly(Closeables.java:108)
> at org.apache.drill.exec.server.Drillbit.close(Drillbit.java:267)
> at
> org.apache.drill.exec.server.Drillbit$ShutdownThread.run(Drillbit.java:285)
> {code}
> This might be a result of sharing the jvm across test classes during mvn
> install runs, but it might also be a new problem, because some examples can
> be seen in individual tests run from IDEs.
> Investigate.
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