[jira] [Created] (DRILL-2510) Unclosed allocators detected in Java shutdown hook

["Chris Westin (JIRA)" <ji...@apache.org>]

Chris Westin created DRILL-2510:
-----------------------------------

             Summary: 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: Chris Westin


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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