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From "Michael McCandless (JIRA)" <>
Subject [jira] Created: (LUCENE-2805) SegmentInfos shouldn't blindly increment version on commit
Date Tue, 07 Dec 2010 00:46:09 GMT
SegmentInfos shouldn't blindly increment version on commit

                 Key: LUCENE-2805
             Project: Lucene - Java
          Issue Type: Bug
          Components: Index
            Reporter: Michael McCandless
             Fix For: 3.1, 4.0

SegmentInfos currently increments version on the assumption that there are always changes.

But, both DirReader and IW are more careful about tracking whether there are changes.  DirReader
has hasChanges and IW has changeCount.  I think these classes should notify the SIS when there
are in fact changes; this will fix the case Simon hit on fixing LUCENE-2082 when the NRT reader
thought there were changes, but in fact there weren't because IW simply committed the exact
SIS it already had.

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