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Posted to dev@hbase.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2013/02/14 01:24:14 UTC
[jira] [Created] (HBASE-7843) enable encapsulating compaction
policy/compactor/store file manager interaction shennanigans
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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