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https://issues.apache.org/jira/browse/LUCENE-955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Busch updated LUCENE-955:
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Attachment: lucene-955.patch
Patch including testcase showing the bug.
> Bug in SegmentTermPositions if used for first term in the dictionary
> --------------------------------------------------------------------
>
> Key: LUCENE-955
> URL: https://issues.apache.org/jira/browse/LUCENE-955
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.2
> Reporter: Michael Busch
> Assignee: Michael Busch
> Priority: Minor
> Fix For: 2.3
>
> Attachments: lucene-955.patch
>
>
> When a SegmentTermPositions object is reset via seek() it does not move
> the proxStream to the correct position in case the term is the first one
> in the dictionary.
> The reason for this behavior is that the skipStream is only moved if
> lazySkipPointer is != 0. But 0 is a valid value for the posting list of
> the very first term. The fix is easy: We simply have to set lazySkipPointer
> to -1 in case no lazy skip has to be performed and then we only move the
> skipStream if lazySkipPointer!=-1.
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