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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-3368) IndexWriter commits update documents without corresponding delete
Date Tue, 09 Aug 2011 12:39:27 GMT
IndexWriter commits update documents without corresponding delete
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                 Key: LUCENE-3368
                 URL: https://issues.apache.org/jira/browse/LUCENE-3368
             Project: Lucene - Java
          Issue Type: Bug
          Components: core/index
    Affects Versions: 3.3, 3.2, 3.1, 3.0.3, 3.0.2, 3.0.1, 3.0
            Reporter: Simon Willnauer
             Fix For: 3.4


while backporting the testcase from LUCENE-3348 I ran into this thread hazard in the 3.x branch.
We actually fixed this issue in LUCENE-3348 for Lucene 4.0 but since DWPT has a slightly different
behavior when committing segments I create a new issue to track this down in 3.x. when we
prepare a commit we sync on IW flush the DW and apply all deletes then release the lock, maybeMerge
and start the commit (IW#startCommit(userdata)). Yet, a new segment could be flushed via getReader
and sneak into the SegementInfos which are cloned in IW#startCommit instead of in prepareCommit
right after the flush. 

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