[ 
https://issues.apache.org/jira/browse/BEAM-3119?focusedWorklogId=89870&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-89870
 ]

ASF GitHub Bot logged work on BEAM-3119:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 11/Apr/18 09:49
            Start Date: 11/Apr/18 09:49
    Worklog Time Spent: 10m 
      Work Description: echauchot 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_r180693176
 
 

 ##########
 File path: 
sdks/java/core/src/test/java/org/apache/beam/sdk/test/ThreadLeakTracker.java
 ##########
 @@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.test;
+
+import static java.util.stream.Collectors.joining;
+import static java.util.stream.Collectors.toList;
+import static org.junit.Assert.fail;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.stream.Stream;
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/**
+ * Tracks the threads created during a test method execution (or class using 
@ClassRule)
+ * and fails if some still exists after the test method execution.
+ */
+public class ThreadLeakTracker implements TestRule {
 
 Review comment:
   Nice !

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 89870)
    Time Spent: 2h 50m  (was: 2h 40m)

> 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: 2h 50m
>  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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