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https://issues.apache.org/jira/browse/LUCENE-4241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419447#comment-13419447
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Mark Miller commented on LUCENE-4241:
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I don't know what's causing it...
But the assert that is generally tripped on delete is tripped because its
trying to uncache a file and finds it in the delegate - and its trying to
assert the file is not in both - and I can seem to cause that condition kind of
easily in a simple multi threaded nrtdir test.
I'm also not sure that removing files underneath this dir would cause that
situation - it would seem not.
> non-reproducible failures from RecoveryZkTest - mostly
> NRTCachingDirectory.deleteFile
> -------------------------------------------------------------------------------------
>
> Key: LUCENE-4241
> URL: https://issues.apache.org/jira/browse/LUCENE-4241
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Hoss Man
> Attachments:
> RecoveryZkTest.testDistribSearch-100-tests-failures.txt.tgz, just-failures.txt
>
>
> Since getting my new laptop, i've noticed some sporadic failures from
> RecoveryZkTest, so last night tried running 100 iterations againts trunk
> (r1363555), and got 5 errors/failures...
> * 3 asertion failures from NRTCachingDirectory.deleteFile
> * 1 node recovery assertion from
> AbstractDistributedZkTestCase.waitForRecoveriesToFinish caused by OOM
> * 1 searcher leak assertion: opens=1658 closes=1652 (possibly lingering
> affects from OOM?)
> see comments/attachments for details
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