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Posted to oak-issues@jackrabbit.apache.org by "Chetan Mehrotra (JIRA)" <ji...@apache.org> on 2014/03/31 09:14:15 UTC

[jira] [Created] (OAK-1648) Creating multiple checkpoint on same head revision overwrites previous entries

Chetan Mehrotra created OAK-1648:
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             Summary: Creating multiple checkpoint on same head revision overwrites previous entries
                 Key: OAK-1648
                 URL: https://issues.apache.org/jira/browse/OAK-1648
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: mongomk
            Reporter: Chetan Mehrotra
            Assignee: Chetan Mehrotra
            Priority: Minor
             Fix For: 1.0


Currently when a checkpoint is created in DocumentNodeStore then it is saved in form of currentHeadRev=>expiryTime. Now if multiple checkpoints are created where head revision has not changed then only the last one would be saved and previous entries would be overridden as revision is used as key

One fix would be to change the expiry time only if the new expiry time is greater than previous entry. However doing that safely in a cluster (check then save) is currently not possible with DocumentStore API as the modCount check if only supported for Nodes.





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