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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2453) Revisit compaction policies after HBASE-2248 commit
Date Thu, 15 Apr 2010 21:20:50 GMT
Revisit compaction policies after HBASE-2248 commit

                 Key: HBASE-2453
                 URL: https://issues.apache.org/jira/browse/HBASE-2453
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: Jonathan Gray
            Priority: Critical
             Fix For: 0.20.4, 0.20.5, 0.21.0

HBASE-2248 turned Gets into Scans server-side.  It also removed the invariant that deletes
in a file only apply to other files and not itself (no longer processes MemStore deletes when
the delete happens).  This has implications for our minor compaction policy.

We are currently processing deletes during minor compactions in a way that makes it so we
do the actual deleting as we compact, but we retain the delete records themselves.  This makes
it so we retain the invariant of deletes only applying to other files.

Since this is now gone post HBASE-2248, we should revisit our compaction policies.

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