ASF GitHub Bot logged work on BEAM-3119:

                Author: ASF GitHub Bot
            Created on: 09/Apr/18 23:45
            Start Date: 09/Apr/18 23:45
    Worklog Time Spent: 10m 
      Work Description: tgroh commented on a change in pull request #4965: 
BEAM-3119 ensure the metrics thread pool is related to an execution
URL: https://github.com/apache/beam/pull/4965#discussion_r180260599

 File path: 
 @@ -76,6 +64,8 @@
   private static class DirectMetric<UpdateT, ResultT> {
     private final MetricAggregation<UpdateT, ResultT> aggregation;
+    private final ExecutorService executorService;
 Review comment:
   Worth noting that the lifecycle of the ExecutorService is managed outside of 
this class; Alternatively you could pass the `submit` method as a 
`Consumer<Runnable>` or use that type for the field, to ensure that future 
changes are clear that this can't be closed from this class.

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Issue Time Tracking

    Worklog Id:     (was: 89195)
    Time Spent: 1h 40m  (was: 1.5h)

> direct-metrics-counter-committer threads are leaking
> ----------------------------------------------------
>                 Key: BEAM-3119
>                 URL: https://issues.apache.org/jira/browse/BEAM-3119
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-direct
>            Reporter: Etienne Chauchot
>            Assignee: Thomas Groh
>            Priority: Major
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
> When I run ElasticsearchIOTests using ESv5, there is a thread leak control 
> mechanism ({{com.carrotsearch.randomizedtesting.ThreadLeakControl}}). It 
> waits for 5s for non-terminated threads at the end of a test. It detects 
> leaked {{direct-metrics-counter-committer}} thread.
> {code}
> com.carrotsearch.randomizedtesting.ThreadLeakError: There are still zombie 
> threads that couldn't be terminated:
>    1) Thread[id=296, name=direct-metrics-counter-committer, 
> state=TIMED_WAITING, group=TGRP-ElasticsearchIOTest]
>         at sun.misc.Unsafe.park(Native Method)
>         at 
> java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
>         at 
> java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
>         at 
> java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
>         at 
> java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
>         at 
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>         at java.lang.Thread.run(Thread.java:745)
>       at __randomizedtesting.SeedInfo.seed([59E504CA1B0DD6A8]:0){code}
> I tried to increase the timeout to 30s (by patching 
> randomizedtesting-runner-2.5.0.jar) but still gets a zombie thread.
> To reproduce, just comment 
> {code}
> @ThreadLeakScope(ThreadLeakScope.Scope.NONE)
> {code}
>  in 
> {code}
> beam/sdks/java/io/elasticsearch-tests/elasticsearch-tests-5/src/test/java/org/apache/beam/sdk/io/elasticsearch/ElasticsearchIOTest.java
> {code}
> and run 
> {code}
> testRead()
> {code}

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