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From "Michael McCandless (JIRA)" <>
Subject [jira] Assigned: (LUCENE-2095) Document not guaranteed to be found after write and commit
Date Wed, 25 Nov 2009 22:00:39 GMT


Michael McCandless reassigned LUCENE-2095:

    Assignee: Michael McCandless

> Document not guaranteed to be found after write and commit
> ----------------------------------------------------------
>                 Key: LUCENE-2095
>                 URL:
>             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
>         Attachments: 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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