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Nov 28, 2009, 1:10 AM
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[jira] Updated: (LUCENE-2095) Document not guaranteed to be found after write and commit
[In reply to]
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[ https://issues.apache.org/jira/browse/LUCENE-2095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless updated LUCENE-2095:
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Attachment: LUCENE-2095.patch
Patch attached. I think it's ready to commit:
* Added a simple monitor lock during commit() to serialize threads.
* Boiled down the test case to a new test case in TestIndexWriter.
* Found & fixed the [unrelated] deadlock in TestCrash, and cutover
RAMDir's tracking of sizeInBytes to an AtomicLong, as discussed on
java-dev.
> Document not guaranteed to be found after write and commit
> ----------------------------------------------------------
>
> Key: LUCENE-2095
> URL: https://issues.apache.org/jira/browse/LUCENE-2095
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.4.1, 2.9.1
> Environment: Linux 64bit
> Reporter: Sanne Grinovero
> Assignee: Michael McCandless
> Fix For: 2.9.2, 3.0.1, 3.1
>
> Attachments: LUCENE-2095.patch, lucene-stresstest.patch
>
>
> after same email on developer list:
> "I developed a stress test to assert that a new document containing a
> specific term "X" is always found after a commit on the IndexWriter.
> This works most of the time, but it fails under load in rare occasions.
> I'm testing with 40 Threads, both with a SerialMergeScheduler and a
> ConcurrentMergeScheduler, all sharing a common IndexWriter.
> Attached testcase is using a RAMDirectory only, but I verified a
> FSDirectory behaves in the same way so I don't believe it's the
> Directory implementation or the MergeScheduler.
> This test is slow, so I don't consider it a functional or unit test.
> It might give false positives: it doesn't always fail, sorry I
> couldn't find out how to make it more likely to happen, besides
> scheduling it to run for a longer time."
> I tested this to affect versions 2.4.1 and 2.9.1;
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