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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-7843) enable encapsulating compaction policy/compactor/store file manager interaction shennanigans
Date Thu, 14 Feb 2013 00:24:14 GMT
Sergey Shelukhin created HBASE-7843:
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             Summary: enable encapsulating compaction policy/compactor/store file manager
interaction shennanigans
                 Key: HBASE-7843
                 URL: https://issues.apache.org/jira/browse/HBASE-7843
             Project: HBase
          Issue Type: Improvement
          Components: Compaction
            Reporter: Sergey Shelukhin
            Assignee: Sergey Shelukhin


To avoid massive casting and/or deciphering of structures traveling between SFM, compaction
policy, and compactor in non-trivial compaction schemes like stripe or level, we need to make
interaction between themselves hidden.
Elsewhere, the changes are being made to coprocessor for compactions that will make CompactionRequest
a limited-visibility class for users, with coprocessors being able to subclass and return
it. This seems like a viable solution for the problem at hand too. Policy will (optionally)
subclass compaction request and return it. Instead of calling something.compact(req), req.compact()
will be called (with "something" already stored inside req as of now), after which, magic
will happen.

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