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Posted to commits@cassandra.apache.org by "Brandon Williams (JIRA)" <ji...@apache.org> on 2016/07/26 16:44:20 UTC

[jira] [Created] (CASSANDRA-12300) Disallow unset memtable_cleanup_threshold when flush writers is set

Brandon Williams created CASSANDRA-12300:
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             Summary: Disallow unset memtable_cleanup_threshold when flush writers is set
                 Key: CASSANDRA-12300
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12300
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Brandon Williams


Many times I see flush writers set, and mct unset, leading to a very small mct, which causes unneeded frequent flushing, and then of course compaction.  I also think the default is a bit conservative, typically ending up at 0.11, where I'd say the majority of use cases only have one or two hot tables and are much better served at 0.7 or 0.8.



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