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Posted to commits@cassandra.apache.org by "T Jake Luciani (JIRA)" <ji...@apache.org> on 2016/07/18 20:32:20 UTC

[jira] [Created] (CASSANDRA-12228) Write performance regression in 3.x vs 3.0

T Jake Luciani created CASSANDRA-12228:
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             Summary: Write performance regression in 3.x vs 3.0
                 Key: CASSANDRA-12228
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12228
             Project: Cassandra
          Issue Type: Bug
            Reporter: T Jake Luciani
            Assignee: Marcus Eriksson
            Priority: Minor
             Fix For: 3.9


I've been tracking down a performance issue in trunk vs cassandra-3.0 branch.

I think I've found it.  CASSANDRA-6696 changed the default memtable flush default to 1 vs the min of 2 in cassandra-3.0.

I don't see any technical reason for this and we should add back the min of 2 sstable flushers per disk.



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