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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-6629) Random 7200 seconds build timeouts / infinite loops in Lucene tests?
Date Mon, 29 Jun 2015 09:09:04 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-6629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14605324#comment-14605324
] 

Michael McCandless commented on LUCENE-6629:
--------------------------------------------

Here's another one (just happened last night): http://build-eu-00.elastic.co/job/lucene_linux_java8_64_test_only/53453/console

{noformat}
   [junit4] HEARTBEAT J2 PID(14791@localhost): 2015-06-29T01:59:23, stalled for 7144s at:
TestIndexWriterCommit.testCommitUserData
   [junit4] Suite: org.apache.lucene.index.TestIndexWriterCommit
   [junit4]   2> 6? 28, 2015 6:00:17 ?? com.carrotsearch.randomizedtesting.ThreadLeakControl$2
evaluate
   [junit4]   2> WARNING: Suite execution timed out: org.apache.lucene.index.TestIndexWriterCommit
   [junit4]   2>    1) Thread[id=12, name=JUnit4-serializer-daemon, state=TIMED_WAITING,
group=main]
   [junit4]   2>         at java.lang.Thread.sleep(Native Method)
   [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.events.Serializer$1.run(Serializer.java:47)
   [junit4]   2>    2) Thread[id=1, name=main, state=WAITING, group=main]
   [junit4]   2>         at java.lang.Object.wait(Native Method)
   [junit4]   2>         at java.lang.Thread.join(Thread.java:1249)
   [junit4]   2>         at java.lang.Thread.join(Thread.java:1323)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSuite(RandomizedRunner.java:578)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.run(RandomizedRunner.java:444)
   [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:199)
   [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:310)
   [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:12)
   [junit4]   2>    3) Thread[id=18, name=SUITE-TestIndexWriterCommit-seed#[9DCD05E439A5112E],
state=RUNNABLE, group=TGRP-TestIndexWriterCommit]
   [junit4]   2>         at java.lang.Thread.getStackTrace(Thread.java:1556)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.getThreadsWithTraces(ThreadLeakControl.java:690)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.formatThreadStacksFull(ThreadLeakControl.java:679)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.access$900(ThreadLeakControl.java:62)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$2.evaluate(ThreadLeakControl.java:412)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSuite(RandomizedRunner.java:651)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.access$200(RandomizedRunner.java:138)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$1.run(RandomizedRunner.java:568)
   [junit4]   2>    4) Thread[id=19, name=TEST-TestIndexWriterCommit.testCommitUserData-seed#[9DCD05E439A5112E],
state=RUNNABLE, group=TGRP-TestIndexWriterCommit]
   [junit4]   2>         at org.apache.lucene.store.DataOutput.writeString(DataOutput.java:259)
   [junit4]   2>         at org.apache.lucene.codecs.CodecUtil.writeHeader(CodecUtil.java:92)
   [junit4]   2>         at org.apache.lucene.codecs.CodecUtil.writeIndexHeader(CodecUtil.java:134)
   [junit4]   2>         at org.apache.lucene.codecs.lucene50.Lucene50SegmentInfoFormat.write(Lucene50SegmentInfoFormat.java:129)
   [junit4]   2>         at org.apache.lucene.index.DocumentsWriterPerThread.sealFlushedSegment(DocumentsWriterPerThread.java:499)
   [junit4]   2>         at org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:457)
   [junit4]   2>         at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:514)
   [junit4]   2>         at org.apache.lucene.index.DocumentsWriter.postUpdate(DocumentsWriter.java:384)
   [junit4]   2>         at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:477)
   [junit4]   2>         at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1470)
   [junit4]   2>         at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1249)
   [junit4]   2>         at org.apache.lucene.index.TestIndexWriter.addDoc(TestIndexWriter.java:148)
   [junit4]   2>         at org.apache.lucene.index.TestIndexWriterCommit.testCommitUserData(TestIndexWriterCommit.java:664)
   [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   [junit4]   2>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   [junit4]   2>         at java.lang.reflect.Method.invoke(Method.java:502)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1627)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:836)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:872)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:886)
   [junit4]   2>         at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
   [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
   [junit4]   2>         at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
   [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
   [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:845)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:747)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:781)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:792)
   [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2>         at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2>         at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
   [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
   [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
   [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
   [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
   [junit4]   2>         at java.lang.Thread.run(Thread.java:745)
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=TestIndexWriterCommit -Dtests.method=testCommitUserData
-Dtests.seed=9DCD05E439A5112E -Dtests.slow=true -Dtests.locale=zh_HK -Dtests.timezone=America/Belize
-Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
   [junit4] ERROR   7198s J2 | TestIndexWriterCommit.testCommitUserData <<<
   [junit4]    > Throwable #1: java.lang.Exception: Test abandoned because suite timeout
was reached.
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([9DCD05E439A5112E]:0)
   [junit4]   2> 6? 28, 2015 6:00:17 ?? com.carrotsearch.randomizedtesting.ThreadLeakControl
checkThreadLeaks
   [junit4]   2> WARNING: Will linger awaiting termination of 1 leaked thread(s).
   [junit4]   2> NOTE: test params are: codec=Asserting(Lucene53): {f=TestBloomFilteredLucenePostings(BloomFilteringPostingsFormat(Lucene50(blocksize=128))),
id=Lucene50(blocksize=128), content=Lucene50(blocksize=128)}, docValues:{}, sim=RandomSimilarityProvider(queryNorm=false,coord=no):
{id=DFR GL2, content=DFR G3(800.0)}, locale=zh_HK, timezone=America/Belize
   [junit4]   2> NOTE: Linux 3.13.0-52-generic amd64/Oracle Corporation 1.9.0-ea (64-bit)/cpus=8,threads=1,free=379935560,total=508559360
   [junit4]   2> NOTE: All tests run in this JVM: [TestNearSpansOrdered, TestMergeSchedulerExternal,
TestIndexWriterCommit]
   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=TestIndexWriterCommit -Dtests.seed=9DCD05E439A5112E
-Dtests.slow=true -Dtests.locale=zh_HK -Dtests.timezone=America/Belize -Dtests.asserts=true
-Dtests.file.encoding=ISO-8859-1
   [junit4] ERROR   0.00s J2 | TestIndexWriterCommit (suite) <<<
   [junit4]    > Throwable #1: java.lang.Exception: Suite timeout exceeded (>= 7200000
msec).
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([9DCD05E439A5112E]:0)
   [junit4] Completed [380/402] on J2 in 7200.84s, 8 tests, 2 errors <<< FAILURES!
{noformat}

This test makes a Directory, IndexWriter and then writes 17 docs into it, and somehow it's
hung doing {{DataOutput.writeString}} on one of those docs.

> Random 7200 seconds build timeouts / infinite loops in Lucene tests?
> --------------------------------------------------------------------
>
>                 Key: LUCENE-6629
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6629
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Michael McCandless
>
> I'm not sure what's going on here, but every so often a Jenkins run will fail with a
build timeout (7200 seconds) with stack traces that do not look like deadlock.  They never
reproduce for me.
> We really need to improve test infra here, so that each HEARTBEAT we also got 1) full
thread stacks and 2) total CPU usage of the process as reported by the ManagementBean APIs
... this would shed more light on whether the JVM is somehow hung vs our bug (infinite loop).
 But infinite loop seems most likely ... the stacks always seem to be somewhere "spooky".
> We should try to gather recent Jenkins runs where this is happening, here, to see if
there are patterns / we can get to the root cause.
> Anyway, this happened to me on my old beast box, which runs the "nightly ant test times"
graphs: http://people.apache.org/~mikemccand/lucenebench/antcleantest.html
> The 2015/06/27 data point is missing because it failed with this timeout:
> {noformat}
>    [junit4] Suite: org.apache.lucene.search.TestDocValuesRewriteMethod
>    [junit4]   2> ??? 28, 2015 7:01:29 ? com.carrotsearch.randomizedtesting.ThreadLeakControl$2
evaluate
>    [junit4]   2> WARNING: Suite execution timed out: org.apache.lucene.search.TestDocValuesRewriteMethod
>    [junit4]   2>    1) Thread[id=1, name=main, state=WAITING, group=main]
>    [junit4]   2>         at java.lang.Object.wait(Native Method)
>    [junit4]   2>         at java.lang.Thread.join(Thread.java:1245)
>    [junit4]   2>         at java.lang.Thread.join(Thread.java:1319)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSuite(RandomizedRunner.java:578)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.run(RandomizedRunner.java:444)
>    [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.execute(SlaveMain.java:199)
>    [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.slave.SlaveMain.main(SlaveMain.java:310)
>    [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.slave.SlaveMainSafe.main(SlaveMainSafe.java:12)
>    [junit4]   2>    2) Thread[id=213, name=TEST-TestDocValuesRewriteMethod.testRegexps-seed#[C2DDF486BB909D8],
state=RUNNABLE, group=TGRP-TestDocValuesRewriteMethod]
>    [junit4]   2>         at org.apache.lucene.util.automaton.Operations.getLiveStates(Operations.java:900)
>    [junit4]   2>         at org.apache.lucene.util.automaton.Operations.hasDeadStates(Operations.java:389)
>    [junit4]   2>         at org.apache.lucene.util.automaton.Automata.makeString(Automata.java:517)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:579)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.findLeaves(RegExp.java:617)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:519)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.findLeaves(RegExp.java:617)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:510)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomaton(RegExp.java:495)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomaton(RegExp.java:466)
>    [junit4]   2>         at org.apache.lucene.search.RegexpQuery.<init>(RegexpQuery.java:109)
>    [junit4]   2>         at org.apache.lucene.search.RegexpQuery.<init>(RegexpQuery.java:79)
>    [junit4]   2>         at org.apache.lucene.search.TestDocValuesRewriteMethod.assertSame(TestDocValuesRewriteMethod.java:117)
>    [junit4]   2>         at org.apache.lucene.search.TestDocValuesRewriteMethod.testRegexps(TestDocValuesRewriteMethod.java:109)
>    [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>    [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>    [junit4]   2>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>    [junit4]   2>         at java.lang.reflect.Method.invoke(Method.java:497)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1627)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:836)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:872)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:886)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
>    [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:845)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:747)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:781)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:792)
>    [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>    [junit4]   2>         at java.lang.Thread.run(Thread.java:745)
>    [junit4]   2>    3) Thread[id=212, name=SUITE-TestDocValuesRewriteMethod-seed#[C2DDF486BB909D8],
state=RUNNABLE, group=TGRP-TestDocValuesRewriteMethod]
>    [junit4]   2>         at java.lang.Thread.getStackTrace(Thread.java:1552)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.getThreadsWithTraces(ThreadLeakControl.java:690)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.formatThreadStacksFull(ThreadLeakControl.java:679)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.access$900(ThreadLeakControl.java:62)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$2.evaluate(ThreadLeakControl.java:412)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSuite(RandomizedRunner.java:651)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.access$200(RandomizedRunner.java:138)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$1.run(RandomizedRunner.java:568)
>    [junit4]   2>    4) Thread[id=19, name=JUnit4-serializer-daemon, state=TIMED_WAITING,
group=main]
>    [junit4]   2>         at java.lang.Thread.sleep(Native Method)
>    [junit4]   2>         at com.carrotsearch.ant.tasks.junit4.events.Serializer$1.run(Serializer.java:47)
>    [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=TestDocValuesRewriteMethod
-Dtests.method=testRegexps -Dtests.seed=C2DDF486BB909D8 -Dtests.slow=true -Dtests.locale=ar_IQ
-Dtests.timezone=Africa/Mbabane -Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
>    [junit4] ERROR   7200s J6  | TestDocValuesRewriteMethod.testRegexps <<<
>    [junit4]    > Throwable #1: java.lang.Exception: Test abandoned because suite timeout
was reached.
>    [junit4]    > 	at __randomizedtesting.SeedInfo.seed([C2DDF486BB909D8]:0)
>    [junit4]   2> ??? 28, 2015 7:01:29 ? com.carrotsearch.randomizedtesting.ThreadLeakControl
checkThreadLeaks
>    [junit4]   2> WARNING: Will linger awaiting termination of 1 leaked thread(s).
>    [junit4]   2> ??? 28, 2015 7:01:49 ? com.carrotsearch.randomizedtesting.ThreadLeakControl
checkThreadLeaks
>    [junit4]   2> SEVERE: 1 thread leaked from SUITE scope at org.apache.lucene.search.TestDocValuesRewriteMethod:

>    [junit4]   2>    1) Thread[id=213, name=TEST-TestDocValuesRewriteMethod.testRegexps-seed#[C2DDF486BB909D8],
state=RUNNABLE, group=TGRP-TestDocValuesRewriteMethod]
>    [junit4]   2>         at org.apache.lucene.util.automaton.Operations.getLiveStates(Operations.java:900)
>    [junit4]   2>         at org.apache.lucene.util.automaton.Operations.hasDeadStates(Operations.java:389)
>    [junit4]   2>         at org.apache.lucene.util.automaton.Automata.makeString(Automata.java:517)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:579)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.findLeaves(RegExp.java:617)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:519)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.findLeaves(RegExp.java:617)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:510)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomaton(RegExp.java:495)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomaton(RegExp.java:466)
>    [junit4]   2>         at org.apache.lucene.search.RegexpQuery.<init>(RegexpQuery.java:109)
>    [junit4]   2>         at org.apache.lucene.search.RegexpQuery.<init>(RegexpQuery.java:79)
>    [junit4]   2>         at org.apache.lucene.search.TestDocValuesRewriteMethod.assertSame(TestDocValuesRewriteMethod.java:117)
>    [junit4]   2>         at org.apache.lucene.search.TestDocValuesRewriteMethod.testRegexps(TestDocValuesRewriteMethod.java:109)
>    [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>    [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>    [junit4]   2>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>    [junit4]   2>         at java.lang.reflect.Method.invoke(Method.java:497)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1627)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:836)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:872)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:886)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
>    [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:845)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:747)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:781)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:792)
>    [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>    [junit4]   2>         at java.lang.Thread.run(Thread.java:745)
>    [junit4]   2> ??? 28, 2015 7:01:49 ? com.carrotsearch.randomizedtesting.ThreadLeakControl
tryToInterruptAll
>    [junit4]   2> INFO: Starting to interrupt leaked threads:
>    [junit4]   2>    1) Thread[id=213, name=TEST-TestDocValuesRewriteMethod.testRegexps-seed#[C2DDF486BB909D8],
state=RUNNABLE, group=TGRP-TestDocValuesRewriteMethod]
>    [junit4]   2> ??? 28, 2015 7:01:52 ? com.carrotsearch.randomizedtesting.ThreadLeakControl
tryToInterruptAll
>    [junit4]   2> SEVERE: There are still zombie threads that couldn't be terminated:
>    [junit4]   2>    1) Thread[id=213, name=TEST-TestDocValuesRewriteMethod.testRegexps-seed#[C2DDF486BB909D8],
state=RUNNABLE, group=TGRP-TestDocValuesRewriteMethod]
>    [junit4]   2>         at org.apache.lucene.util.automaton.Operations.getLiveStates(Operations.java:900)
>    [junit4]   2>         at org.apache.lucene.util.automaton.Operations.hasDeadStates(Operations.java:389)
>    [junit4]   2>         at org.apache.lucene.util.automaton.Automata.makeString(Automata.java:517)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:579)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.findLeaves(RegExp.java:617)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:519)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.findLeaves(RegExp.java:617)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomatonInternal(RegExp.java:510)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomaton(RegExp.java:495)
>    [junit4]   2>         at org.apache.lucene.util.automaton.RegExp.toAutomaton(RegExp.java:466)
>    [junit4]   2>         at org.apache.lucene.search.RegexpQuery.<init>(RegexpQuery.java:109)
>    [junit4]   2>         at org.apache.lucene.search.RegexpQuery.<init>(RegexpQuery.java:79)
>    [junit4]   2>         at org.apache.lucene.search.TestDocValuesRewriteMethod.assertSame(TestDocValuesRewriteMethod.java:117)
>    [junit4]   2>         at org.apache.lucene.search.TestDocValuesRewriteMethod.testRegexps(TestDocValuesRewriteMethod.java:109)
>    [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>    [junit4]   2>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>    [junit4]   2>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>    [junit4]   2>         at java.lang.reflect.Method.invoke(Method.java:497)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1627)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:836)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:872)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:886)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:50)
>    [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:49)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:798)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:458)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:845)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$3.evaluate(RandomizedRunner.java:747)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$4.evaluate(RandomizedRunner.java:781)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:792)
>    [junit4]   2>         at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:46)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:42)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:39)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:54)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:48)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:65)
>    [junit4]   2>         at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:55)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
>    [junit4]   2>         at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:365)
>    [junit4]   2>         at java.lang.Thread.run(Thread.java:745)
>    [junit4]   2> NOTE: test params are: codec=Asserting(Lucene53): {=BlockTreeOrds(blocksize=128),
id=PostingsFormat(name=Memory doPackFST= true)}, docValues:{=DocValuesFormat(name=Memory)},
sim=RandomSimilarityProvider(queryNorm=false,coord=yes): {}, locale=ar_IQ, timezone=Africa/Mbabane
>    [junit4]   2> NOTE: Linux 3.13.0-55-generic amd64/Oracle Corporation 1.8.0_40 (64-bit)/cpus=24,threads=2,free=270513952,total=324534272
>    [junit4]   2> NOTE: All tests run in this JVM: [TestBytesRefHash, TestRegexpQuery,
TestIndexWriterUnicode, TestTopDocsMerge, TestUniqueTermCount, TestMinShouldMatch2, TestNot,
TestSpanContainQuery, TestPayloadBasics, TestDoc, TestFastDecompressionMode, TestCachingCollector,
TestSort, TestPriorityQueue, TestTwoPhaseCommitTool, TestCompiledAutomaton, TestSimpleFSDirectory,
TestCloseableThreadLocal, TestIndexWriterExceptions, TestConcurrentMergeScheduler, TestSleepingLockWrapper,
TestTieredMergePolicy, TestDeletionPolicy, TestFixedBitSet, TestDocValuesRewriteMethod]
>    [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=TestDocValuesRewriteMethod
-Dtests.seed=C2DDF486BB909D8 -Dtests.slow=true -Dtests.locale=ar_IQ -Dtests.timezone=Africa/Mbabane
-Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
>    [junit4] ERROR   0.00s J6  | TestDocValuesRewriteMethod (suite) <<<
>    [junit4]    > Throwable #1: java.lang.Exception: Suite timeout exceeded (>=
7200000 msec).
>    [junit4]    > 	at __randomizedtesting.SeedInfo.seed([C2DDF486BB909D8]:0)
> {noformat}



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