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Posted to dev@lucene.apache.org by "Uwe Schindler (JIRA)" <ji...@apache.org> on 2015/06/12 08:57:01 UTC
[jira] [Updated] (LUCENE-4735) IBM J9 JVM bug causes test failure
in Kuromoji's TestExtended
[ https://issues.apache.org/jira/browse/LUCENE-4735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Uwe Schindler updated LUCENE-4735:
----------------------------------
Labels: IBM-J9 (was: )
> IBM J9 JVM bug causes test failure in Kuromoji's TestExtended
> -------------------------------------------------------------
>
> Key: LUCENE-4735
> URL: https://issues.apache.org/jira/browse/LUCENE-4735
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael McCandless
> Labels: IBM-J9
> Attachments: LUCENE-4735.patch, TestTreeMap2.java
>
>
> Note that this is not a Lucene bug; it's a JVM bug, but I wanted to track it in Lucene as well in case others hit it.
> I noticed this test frequently fails when running under IBM's J9 JVM (1.6.0) ... and I finally tracked down the root cause and made a small test case, eg on trunk, rev 1439839, if you run:
> {noformat}
> ant test -Dtestcase=TestExtendedMode -Dtestmethod=testRandomHugeStrings -Dtests.seed=26D2B352E9603950
> {noformat}
> it fails with this:
> {noformat}
> [junit4:junit4] > Throwable #1: java.lang.IllegalArgumentException: startOffset must be non-negative, and endOffset must be >= startOffset, startOffset=4272,endOffset=4271
> [junit4:junit4] > at __randomizedtesting.SeedInfo.seed([26D2B352E9603950:BEF1D491B7168518]:0)
> [junit4:junit4] > at org.apache.lucene.analysis.tokenattributes.OffsetAttributeImpl.setOffset(OffsetAttributeImpl.java:45)
> [junit4:junit4] > at org.apache.lucene.analysis.ja.JapaneseTokenizer.incrementToken(JapaneseTokenizer.java:463)
> [junit4:junit4] > at org.apache.lucene.analysis.BaseTokenStreamTestCase.checkAnalysisConsistency(BaseTokenStreamTestCase.java:635)
> [junit4:junit4] > at org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:546)
> [junit4:junit4] > at org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:447)
> [junit4:junit4] > at org.apache.lucene.analysis.BaseTokenStreamTestCase.checkRandomData(BaseTokenStreamTestCase.java:375)
> [junit4:junit4] > at org.apache.lucene.analysis.ja.TestExtendedMode.testRandomHugeStrings(TestExtendedMode.java:76)
> {noformat}
> I've seen other analyzer tests fail with similar exceptions.
> I dug in, and found that there's a bug in TreeMap.subMap, and it's easily reproduced with a small test case, which I'll attach. I'll also open an issue with J9.
> I also found a workaround that seems to sidestep the bug for Lucene.
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