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From "Erik van Zijst (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1474) Incorrect SegmentInfo.delCount when IndexReader.flush() is used
Date Wed, 20 May 2009 03:38:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12710988#action_12710988
] 

Erik van Zijst commented on LUCENE-1474:
----------------------------------------

For some time now we've been getting similar assertion errors on our development machines
when running with assertions enabled (disabling them kills the assertion error and doesn _appear_
to have any negative impact though).

We're running with lucene 2.4.1 and the unit test attached to this issue succeeds as expected.
I have attached a full stacktrace.

cheers,
Erik
Atlassian

> Incorrect SegmentInfo.delCount when IndexReader.flush() is used
> ---------------------------------------------------------------
>
>                 Key: LUCENE-1474
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1474
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.4
>            Reporter: Marcel Reutegger
>            Assignee: Michael McCandless
>             Fix For: 2.4.1, 2.9
>
>         Attachments: IndexReaderTest.java
>
>
> When deleted documents are flushed using IndexReader.flush() the delCount in SegmentInfo
is updated based on the current value and SegmentReader.pendingDeleteCount (introduced by
LUCENE-1267). It seems that pendingDeleteCount is not reset after the commit, which means
after a second flush() or close() of an index reader the delCount in SegmentInfo is incorrect.
A subsequent IndexReader.open() call will fail with an error when assertions are enabled.
E.g.:
> java.lang.AssertionError: delete count mismatch: info=3 vs BitVector=2
> 	at org.apache.lucene.index.SegmentReader.loadDeletedDocs(SegmentReader.java:405)
> [...]

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