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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2014/09/03 13:54:52 UTC

[jira] [Commented] (LUCENE-5919) More carefully handle exceptions from IndexFileDeleter.decRef

    [ https://issues.apache.org/jira/browse/LUCENE-5919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14119786#comment-14119786 ] 

Robert Muir commented on LUCENE-5919:
-------------------------------------

+1, wow so many exc handling bugs here. 

Thanks Mike.

> More carefully handle exceptions from IndexFileDeleter.decRef
> -------------------------------------------------------------
>
>                 Key: LUCENE-5919
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5919
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/index
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 5.0, 4.11
>
>         Attachments: LUCENE-5919.patch
>
>
> From test failure: https://builds.apache.org/job/Lucene-Solr-NightlyTests-trunk/613/
> {noformat}
> java.lang.AssertionError: TEST-TestIndexWriterOutOfMemory.testBasics-seed#[C4C9D7B4B9D5D290]: RefCount is 0 pre-decrement for file "_2_2_Lucene410_0.dvd"
> 	at __randomizedtesting.SeedInfo.seed([C4C9D7B4B9D5D290:F9117998813B8CE0]:0)
> 	at org.apache.lucene.index.IndexFileDeleter$RefCount.DecRef(IndexFileDeleter.java:725)
> 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:611)
> 	at org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:599)
> 	at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2851)
> 	at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2952)
> 	at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2919)
> 	at org.apache.lucene.index.TestIndexWriterOutOfMemory.testBasics(TestIndexWriterOutOfMemory.java:215)
> Reproduce with: ant test  -Dtestcase=TestIndexWriterOutOfMemory -Dtests.method=testBasics -Dtests.seed=C4C9D7B4B9D5D290 -Dtests.multiplier=2 -Dtests.nightly=true -Dtests.slow=true -Dtests.linedocsfile=/home/jenkins/lucene-data/enwiki.random.lines.txt -Dtests.locale=mk_MK -Dtests.timezone=America/Vancouver -Dtests.file.encoding=ISO-8859-1
> {noformat}
> What happened was IW was trying to decRef a set of files, and at
> least one needed to be deleted, then virus checker threw exception,
> and IW later passed the full set of files back to decRef later despite
> that some had already been decRef'd the first time.



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