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https://issues.apache.org/jira/browse/LUCENE-1036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-1036:
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Attachment: LUCENE-1036.patch
Attached unit test that shows the issue & patch that fixes it. I also
catch & ignore SecurityException coming out of mergeThread.setPriority
since it's fine if we fail to set the thread's priority.
> Unreleased 2.3 version of IndexWriter.optimize() consistly throws
> java.lang.IllegalArgumentException out-of-the-box
> --------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-1036
> URL: https://issues.apache.org/jira/browse/LUCENE-1036
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.3
> Environment: AIX 5.3 Unix, Java 1.4,
> lucene-core-2007-10-26_03-16-46.jar
> Reporter: R Giles
> Attachments: LUCENE-1036.patch
>
>
> Since the upcoming 2.3 version of Lucene has support for the
> setRAMBufferSizeMB() method in Index Writer, I thought I would test its
> performance. So, using my application that was built upon (and worked with)
> Lucene 2.2, I downloaded the nightly build 2007-10-26_03-16-46 and rebuilt
> my application with new code setting setRAMBufferSizeMB() from a properties
> file. My test data resides in a database table of 30 columns holding 1.25
> million records. The good news is that performance is superior to Lucene
> 2.2. The indexing completes in roughly 1/3 the time. The bad news is the
> Index Writer.optimize() step now throws an java.lang.IllegalArgumentException.
> I also run tests against various other tables. Indexing smaller amounts of
> data did not throw the exception. Indexing largers amounts of data did throw
> the exception. Note, I also tested nightly builds dating back to 2007-10-05.
> ...
> INFO: SEIndexThread.commitCheck...
> INFO: ----Commit point reached: 1200000
> INFO: SEIndexThread.commitCheck...
> INFO: ----Commit point reached: 1225000
> INFO: SEIndexThread.commitCheck...
> INFO: ----Commit point reached: 1250000
> INFO: SEIndexThread.closeIndex()...
> INFO: ----commit point reached: 1250659
> INFO: ----optimize index
> INFO: SEIndexThread(): java.lang.IllegalArgumentException
> java.lang.IllegalArgumentException
> at java.lang.Thread.setPriority(Thread.java(Compiled Code))
> at
> org.apache.lucene.index.ConcurrentMergeScheduler.merge(ConcurrentMerg
> eScheduler.java(Compiled Code))
> at
> org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1750)
> at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:1686)
> at org.apache.lucene.index.IndexWriter.optimize(IndexWriter.java:1652)
> at LuceneSearchEngine.optimizeIndex(LuceneSearchEngine.java:643)
> at LuceneSearchEngine.optimizeIndex(LuceneSearchEngine.java:636)
> at SEIndexThread.closeIndex(SEIndexThread.java:674)
> at SEIndexThread.processSearchObject(SEIndexThread.java:487)
> at SEIndexThread.prepareIndex(SEIndexThread.java:391)
> at SEIndexThread.run(SEIndexThread.java:41)
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