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From "Robert Muir (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3463) Jenkins trunk tests (nightly only) fail quite often with OOM in Automaton/FST tests
Date Sat, 01 Oct 2011 00:48:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118605#comment-13118605
] 

Robert Muir commented on LUCENE-3463:
-------------------------------------

Hoss asked me some questions about my comment, so some more explanations of what I meant:

First I think it would be great to add this annotation: its bogus how we assume() so much
(and annoying from your ide when you randomly get a green light sometimes and think you fixed
your problem but you didnt).

But the configuration of Codec (and i think other things, Locale, Similarity, ...) is currently
across the whole class for consistency, which means its pulling from a per-class random seed.
Because of this I think it would be "tricky" for the annotation to properly work at the test
method level if we want the random seeds to always reproduce failures... I'm not saying its
impossible...

So my idea of the simplest solution would be for the annotation to only work at the whole
class level... I think for practical purposes this is all we need to fix these problems and
remove these assume()s.
                
> Jenkins trunk tests (nightly only) fail quite often with OOM in Automaton/FST tests
> -----------------------------------------------------------------------------------
>
>                 Key: LUCENE-3463
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3463
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Uwe Schindler
>             Fix For: 4.0
>
>         Attachments: LUCENE-3463.patch, LUCENE-3463.patch, LUCENE-3463.patch, LUCENE-3463.patch
>
>
> The nightly Job Lucene-trunk quite often fails with OOM (in several methods, not always
in the same test):
> Example from last night (this time a huge Automaton):
> {noformat}
> [junit] java.lang.OutOfMemoryError: Java heap space
> [junit] Dumping heap to /home/hudson/hudson-slave/workspace/Lucene-trunk/heapdumps/java_pid38855.hprof
...
> [junit] Heap dump file created [86965954 bytes in 1.186 secs]
> [junit] Testsuite: org.apache.lucene.index.TestTermsEnum
> [junit] Testcase: testIntersectRandom(org.apache.lucene.index.TestTermsEnum):	Caused
an ERROR
> [junit] Java heap space
> [junit] java.lang.OutOfMemoryError: Java heap space
> [junit] 	at org.apache.lucene.util.automaton.RunAutomaton.<init>(RunAutomaton.java:128)
> [junit] 	at org.apache.lucene.util.automaton.ByteRunAutomaton.<init>(ByteRunAutomaton.java:28)
> [junit] 	at org.apache.lucene.util.automaton.CompiledAutomaton.<init>(CompiledAutomaton.java:134)
> [junit] 	at org.apache.lucene.index.TestTermsEnum.testIntersectRandom(TestTermsEnum.java:266)
> [junit] 	at org.apache.lucene.util.LuceneTestCase$2$1.evaluate(LuceneTestCase.java:611)
> [junit] 	at org.apache.lucene.util.LuceneTestCaseRunner.runChild(LuceneTestCaseRunner.java:148)
> [junit] 	at org.apache.lucene.util.LuceneTestCaseRunner.runChild(LuceneTestCaseRunner.java:50)
> [junit] 
> [junit] 
> [junit] Tests run: 6, Failures: 0, Errors: 1, Time elapsed: 11.699 sec
> {noformat}
> Other traces:
> {noformat}
> [junit] Testsuite: org.apache.lucene.util.fst.TestFSTs
> [junit] Testcase: testRealTerms(org.apache.lucene.util.fst.TestFSTs):	Caused an ERROR
> [junit] Java heap space
> [junit] java.lang.OutOfMemoryError: Java heap space
> [junit] 	at org.apache.lucene.util.ArrayUtil.grow(ArrayUtil.java:338)
> [junit] 	at org.apache.lucene.util.fst.FST$BytesWriter.writeBytes(FST.java:927)
> [junit] 	at org.apache.lucene.util.fst.ByteSequenceOutputs.write(ByteSequenceOutputs.java:113)
> [junit] 	at org.apache.lucene.util.fst.ByteSequenceOutputs.write(ByteSequenceOutputs.java:32)
> [junit] 	at org.apache.lucene.util.fst.FST.addNode(FST.java:451)
> [junit] 	at org.apache.lucene.util.fst.NodeHash.add(NodeHash.java:122)
> [junit] 	at org.apache.lucene.util.fst.Builder.compileNode(Builder.java:180)
> [junit] 	at org.apache.lucene.util.fst.Builder.finish(Builder.java:495)
> [junit] 	at org.apache.lucene.index.codecs.memory.MemoryCodec$TermsWriter.finish(MemoryCodec.java:232)
> [junit] 	at org.apache.lucene.index.FreqProxTermsWriterPerField.flush(FreqProxTermsWriterPerField.java:414)
> [junit] 	at org.apache.lucene.index.FreqProxTermsWriter.flush(FreqProxTermsWriter.java:92)
> [junit] 	at org.apache.lucene.index.TermsHash.flush(TermsHash.java:117)
> [junit] 	at org.apache.lucene.index.DocInverter.flush(DocInverter.java:80)
> [junit] 	at org.apache.lucene.index.DocFieldProcessor.flush(DocFieldProcessor.java:78)
> [junit] 	at org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:472)
> [junit] 	at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:420)
> [junit] 	at org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:568)
> [junit] 	at org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:366)
> [junit] 	at org.apache.lucene.index.IndexReader.open(IndexReader.java:317)
> [junit] 	at org.apache.lucene.util.fst.TestFSTs.testRealTerms(TestFSTs.java:1034)
> [junit] 	at org.apache.lucene.util.LuceneTestCase$2$1.evaluate(LuceneTestCase.java:611)
> {noformat}
> or:
> {noformat}
> [junit] Testsuite: org.apache.lucene.util.automaton.TestCompiledAutomaton
> [junit] Testcase: testRandom(org.apache.lucene.util.automaton.TestCompiledAutomaton):
Caused an ERROR
> [junit] Java heap space
> [junit] java.lang.OutOfMemoryError: Java heap space
> [junit] 	at org.apache.lucene.util.automaton.RunAutomaton.<init>(RunAutomaton.java:128)
> [junit] 	at org.apache.lucene.util.automaton.ByteRunAutomaton.<init>(ByteRunAutomaton.java:28)
> [junit] 	at org.apache.lucene.util.automaton.CompiledAutomaton.<init>(CompiledAutomaton.java:134)
> [junit] 	at org.apache.lucene.util.automaton.TestCompiledAutomaton.build(TestCompiledAutomaton.java:39)
> [junit] 	at org.apache.lucene.util.automaton.TestCompiledAutomaton.testTerms(TestCompiledAutomaton.java:55)
> [junit] 	at org.apache.lucene.util.automaton.TestCompiledAutomaton.testRandom(TestCompiledAutomaton.java:101)
> [junit] 	at org.apache.lucene.util.LuceneTestCase$2$1.evaluate(LuceneTestCase.java:611)
> [junit] 	at org.apache.lucene.util.LuceneTestCaseRunner.runChild(LuceneTestCaseRunner.java:148)
> [junit] 	at org.apache.lucene.util.LuceneTestCaseRunner.runChild(LuceneTestCaseRunner.java:50)
> {noformat}
> Almost every nightly test fails, history: [https://builds.apache.org/job/Lucene-trunk]
> We should maybe raise the max heap space or reduce doc counts/...

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