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From "jonathan lacefield (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-6541) Add JVM_OPTS="$JVM_OPTS -XX:+CMSClassUnloadingEnabled" to cassandra-env.sh
Date Thu, 02 Jan 2014 20:39:50 GMT
jonathan lacefield created CASSANDRA-6541:
---------------------------------------------

             Summary: Add JVM_OPTS="$JVM_OPTS -XX:+CMSClassUnloadingEnabled" to cassandra-env.sh
                 Key: CASSANDRA-6541
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6541
             Project: Cassandra
          Issue Type: Bug
          Components: Config
            Reporter: jonathan lacefield
            Priority: Minor


Newer versions of Oracle's Hotspot JVM , post 6u45, are experiencing issues with GC and JMX
where heap slowly fills up overtime until OOM or a full GC event occurs, specifically when
CMS is leveraged.  Running repair exacerbates this issue.  The configuration added to the
Summary line helps alleviate this behavior and should be included in the C* config files by
default.



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