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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-5636) SegmentCommitInfo continues to list unneeded gen'd files
Date Thu, 01 May 2014 18:35:16 GMT
Shai Erera created LUCENE-5636:
----------------------------------

             Summary: SegmentCommitInfo continues to list unneeded gen'd files
                 Key: LUCENE-5636
                 URL: https://issues.apache.org/jira/browse/LUCENE-5636
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/index
            Reporter: Shai Erera
            Assignee: Shai Erera
            Priority: Critical


I thought I handled it in LUCENE-5246, but turns out I didn't handle it fully. I'll upload
a patch which improves the test to expose the bug. I know where it is, but I'm not sure how
to fix it without breaking index back-compat. Can we do that on experimental features?

The problem is that if you update different fields in different gens, the FieldInfos files
of older gens remain referenced (still!!). I open a new issue since LUCENE-5246 is already
resolved and released, so don't want to mess up our JIRA...

The severity of the bug is that unneeded files are still referenced in the index. Everything
still works correctly, it's just that .fnm files are still there. But as I wrote, I'm still
not sure how to solve it without requiring apps that use dv updates to reindex.



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