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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2010/04/17 05:21:24 UTC

[jira] Created: (HBASE-2462) Review compaction heuristic and move compaction code out so standalone and independently testable

Review compaction heuristic and move compaction code out so standalone and independently testable
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                 Key: HBASE-2462
                 URL: https://issues.apache.org/jira/browse/HBASE-2462
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: stack
            Priority: Critical
             Fix For: 0.20.5, 0.21.0


Anything that improves our i/o profile makes hbase run smoother.  Over in HBASE-2457, good work has been done already describing the tension between minimizing compactions versus minimizing count of store files.  This issue is about following on from what has been done in 2457 but also, breaking the hard-to-read compaction code out of Store.java out to a standalone class that can be the easier tested (and easily analyzed for its performance characteristics).

If possible, in the refactor, we'd allow specification of alternate merge sort implementations. 

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