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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} -- This message is automatically generated by JIRA. 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