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https://issues.apache.org/jira/browse/LUCENE-4280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13427884#comment-13427884
]
Dawid Weiss commented on LUCENE-4280:
-------------------------------------
I'm talking about this particular seed though:
{code}
-Dtests.seed=9449688B90185FA5
{code}
With thread leak detection and warnings only:
{code}
@ThreadLeakScope(Scope.TEST)
@ThreadLeakLingering(linger = 1000)
@ThreadLeakAction(value = {Action.WARN})
@Repeat(iterations = 1000)
public class TestReaderClosed extends LuceneTestCase {
{code}
the 'test' method passes all 1000 iterations, the testReaderChaining fails
about 20 times (2% failure rate).
> TestReaderClosed leaks threads
> ------------------------------
>
> Key: LUCENE-4280
> URL: https://issues.apache.org/jira/browse/LUCENE-4280
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Dawid Weiss
> Assignee: Robert Muir
> Priority: Minor
>
> {code}
> -ea
> -Dtests.seed=9449688B90185FA5
> -Dtests.iters=100
> {code}
> reproduces 100% for me, multiple thread leak out from newSearcher's internal
> threadfactory:
> {code}
> Aug 02, 2012 8:46:05 AM com.carrotsearch.randomizedtesting.ThreadLeakControl
> checkThreadLeaks
> SEVERE: 6 threads leaked from SUITE scope at
> org.apache.lucene.index.TestReaderClosed:
> 1) Thread[id=13, name=LuceneTestCase-1-thread-1, state=WAITING,
> group=TGRP-TestReaderClosed]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> 2) Thread[id=15, name=LuceneTestCase-3-thread-1, state=WAITING,
> group=TGRP-TestReaderClosed]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> 3) Thread[id=17, name=LuceneTestCase-5-thread-1, state=WAITING,
> group=TGRP-TestReaderClosed]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> 4) Thread[id=18, name=LuceneTestCase-6-thread-1, state=WAITING,
> group=TGRP-TestReaderClosed]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> 5) Thread[id=16, name=LuceneTestCase-4-thread-1, state=WAITING,
> group=TGRP-TestReaderClosed]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> 6) Thread[id=14, name=LuceneTestCase-2-thread-1, state=WAITING,
> group=TGRP-TestReaderClosed]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> {code}
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