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Posted to commits@cassandra.apache.org by "Chris Goffinet (JIRA)" <ji...@apache.org> on 2011/02/17 03:46:24 UTC
[jira] Resolved: (CASSANDRA-2178) Memtable Flush writers doesn't
actually flush in parallel
[ https://issues.apache.org/jira/browse/CASSANDRA-2178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chris Goffinet resolved CASSANDRA-2178.
---------------------------------------
Resolution: Fixed
Fix Version/s: 0.7.3
> Memtable Flush writers doesn't actually flush in parallel
> ---------------------------------------------------------
>
> Key: CASSANDRA-2178
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2178
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.7.2, 0.8
> Reporter: Chris Goffinet
> Assignee: Chris Goffinet
> Priority: Minor
> Fix For: 0.7.3, 0.8
>
> Attachments: 0001-Set-the-core-min-pool-size-to-memtable_flush_writers-v2.patch, 0001-Set-the-core-min-pool-size-to-memtable_flush_writers.patch
>
>
> The flushWriter JMXEnabledThreadPoolExecutor sets the core pool min to 1, and sets the LBQ to DatabaseDescriptor.getFlushWriters(). Increasing memtable_flush_writers should allow us to flush more in parallel. The pool will not grow until LBQ fills up to DatabaseDescriptor.getFlushWriters().
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