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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