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Posted to commits@cassandra.apache.org by "Yuki Morishita (JIRA)" <ji...@apache.org> on 2015/08/17 20:07:45 UTC

[jira] [Created] (CASSANDRA-10099) Improve concurrency in CompactionStrategyManager

Yuki Morishita created CASSANDRA-10099:
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             Summary: Improve concurrency in CompactionStrategyManager
                 Key: CASSANDRA-10099
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10099
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Yuki Morishita
             Fix For: 3.x


Continue discussion from CASSANDRA-9882.

CompactionStrategyManager(WrappingCompactionStrategy for <3.0) tracks SSTable changes mainly for separating repaired / unrepaired SSTables (+ LCS manages level).

This is blocking operation, and can lead to block of flush etc. when determining next background task takes longer.

Explore the way to mitigate this concurrency issue.



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