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https://issues.apache.org/jira/browse/LUCENE-1474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711444#action_12711444
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Erik van Zijst commented on LUCENE-1474:
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Running with the patch applied doesn't seem to have changed anything. Is it
possible the damage to the index has already been done at this point?
Note that I'm running lucene on large index files that were taken from our
production servers. We've never seen these exception on these production
servers, but then they do not run with assertions enabled. Using these copied
index files (safely copied while the product was not running) on development
machines consistently triggers this problem. I've not regenerated the entire
index on the development machine, for that would be hugely impractical.
> 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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