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Posted to dev@bookkeeper.apache.org by "Ivan Kelly (JIRA)" <ji...@apache.org> on 2014/04/04 17:24:15 UTC

[jira] [Created] (BOOKKEEPER-742) Fix for empty ledgers losing quorum.

Ivan Kelly created BOOKKEEPER-742:
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             Summary: Fix for empty ledgers losing quorum.
                 Key: BOOKKEEPER-742
                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-742
             Project: Bookkeeper
          Issue Type: Bug
          Components: bookkeeper-auto-recovery
            Reporter: Ivan Kelly
            Assignee: Ivan Kelly
             Fix For: 4.3.0, 4.2.3


If a ledger is open and empty, when a bookie in the ensemble crashes no recovery will take place (because there's nothing to recover). This open empty unrepaired ledger can persist for a long time. If it loses another bookie, it can lose quorum. At this point it's impossible for the bookie to know that its an empty ledger, and the admin gets notified of missing data.



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