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Posted to notifications@accumulo.apache.org by "Eric Newton (JIRA)" <ji...@apache.org> on 2013/04/16 19:57:17 UTC

[jira] [Created] (ACCUMULO-1281) flush the METADATA table after GC

Eric Newton created ACCUMULO-1281:
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             Summary: flush the METADATA table after GC
                 Key: ACCUMULO-1281
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1281
             Project: Accumulo
          Issue Type: Improvement
          Components: gc
            Reporter: Eric Newton
            Assignee: Eric Newton
            Priority: Trivial
             Fix For: 1.5.0


The METADATA table is often small, with many in-memory writes.  Because it is small, it does not normally get flushed, which will prune data with the versioning/delete iterators.  Over time, the many in-memory versions can cause poor performance.

The file garbage collector (gc) will make lots of updates as it runs.  That would be a perfect time to flush the table and prune the versions.


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