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From "Chris Goffinet (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-2178) Memtable Flush writers doesn't actually flush in parallel
Date Thu, 17 Feb 2011 01:47:24 GMT
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
            Reporter: Chris Goffinet
            Assignee: Chris Goffinet
            Priority: Minor


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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