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Posted to oak-issues@jackrabbit.apache.org by "Marcel Reutegger (JIRA)" <ji...@apache.org> on 2014/04/28 14:29:14 UTC

[jira] [Created] (OAK-1773) Optimize upgrade to DocumentNodeStore

Marcel Reutegger created OAK-1773:
-------------------------------------

             Summary: Optimize upgrade to DocumentNodeStore
                 Key: OAK-1773
                 URL: https://issues.apache.org/jira/browse/OAK-1773
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: core, mongomk
    Affects Versions: 0.20
            Reporter: Marcel Reutegger
            Assignee: Marcel Reutegger


OAK-1772 makes sure the upgrade does not run out of memory by swapping UnsavedModifications to disk. To further minimize usage and optimize the upgrade process, we should introduce a mode for the DocumentNodeStore where it doesn't use branches for large commits. The upgrade does not have concurrent writes and the overhead of managing a branch in the DocumentNodeStore is unnecessary in this case.



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