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Posted to notifications@accumulo.apache.org by "Eric Newton (JIRA)" <ji...@apache.org> on 2012/12/20 16:47:12 UTC

[jira] [Created] (ACCUMULO-919) delay file garbage collection to survive name node failure

Eric Newton created ACCUMULO-919:
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             Summary: delay file garbage collection to survive name node failure
                 Key: ACCUMULO-919
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-919
             Project: Accumulo
          Issue Type: Bug
          Components: gc
            Reporter: Eric Newton
            Assignee: Eric Newton
            Priority: Blocker
             Fix For: 1.5.0


Consider the catastrophic loss of the namenode.

Assuming you have a previous snapshot, you can recover the namenode using another node back to that snapshot.

However, the most recently deleted files will show as corrupt, because the slightly older state will point to blocks that are now gone.

If the gc delayed file collection for a period of time longer than the age of a snapshot, accumulo could be recovered with the snapshot.


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