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Posted to oak-issues@jackrabbit.apache.org by "Ian Boston (JIRA)" <ji...@apache.org> on 2016/10/17 09:42:58 UTC

[jira] [Created] (OAK-4943) Keep Lucene Commits so that if the Segments file gets corrupted recovery can be attempted.

Ian Boston created OAK-4943:
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             Summary: Keep Lucene Commits so that if the Segments file gets corrupted recovery can be attempted.
                 Key: OAK-4943
                 URL: https://issues.apache.org/jira/browse/OAK-4943
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: lucene
    Affects Versions: 1.6
            Reporter: Ian Boston


Currently, Lucene deletes all previous generations of the segments files as it has it uses the default IndexDeletionPolicy. Changing this to an IndexDeletionPolicy that keeps a number of previous segments files will allow an operator to find the most recent valid commit when the current segments file reports corruption. The patch found at https://github.com/apache/jackrabbit-oak/compare/trunk...ieb:KeepLuceneCommits keeps 10 previous commits.

A more sophisticated policy could be used to save commits non-linearly over time.




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