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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2649) Make use of storefile 'order' making certain decisions during merge sort
Date Tue, 01 Jun 2010 23:17:36 GMT
Make use of storefile 'order' making certain decisions during merge sort
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                 Key: HBASE-2649
                 URL: https://issues.apache.org/jira/browse/HBASE-2649
             Project: HBase
          Issue Type: Improvement
            Reporter: stack


When we merge sort results currently there is no regard for storefile order.  This issue is
about exploiting store file order at certain junctures.  For example, if we have N KVs all
of the same coordinates -- same r/f/q/type/ts -- then the one from the storefile that was
made most recently should prevail.  Also, we might consider order when looking at deletes
so our tombstones are less *tombstoney* in that they'll only apply to values that are in storefiles
older than the one that carries the delete marker (this latter sounds hard but putting it
out there anyways).

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