[jira] [Created] (CASSANDRA-8004) Run LCS for both repaired and unrepaired data

["Marcus Eriksson (JIRA)" <ji...@apache.org>]

Marcus Eriksson created CASSANDRA-8004:
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             Summary: Run LCS for both repaired and unrepaired data
                 Key: CASSANDRA-8004
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8004
             Project: Cassandra
          Issue Type: Bug
            Reporter: Marcus Eriksson
             Fix For: 2.1.1


If a user has leveled compaction configured, we should run that for both the unrepaired and the repaired data. I think this would make things a lot easier for end users

It would simplify migration to incremental repairs as well, if a user runs incremental repair on its nice leveled unrepaired data, we wont need to drop it all to L0, instead we can just start moving sstables from the unrepaired leveling straight into the repaired leveling

Idea could be to have two instances of LeveledCompactionStrategy and move sstables between the instances after an incremental repair run (and let LCS be totally oblivious to whether it handles repaired or unrepaired data). Same should probably apply to any compaction strategy, run two instances and remove all repaired/unrepaired logic from the strategy itself.



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