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https://issues.apache.org/jira/browse/CASSANDRA-6541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13861640#comment-13861640
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Jason Brown commented on CASSANDRA-6541:
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[~jbellis] Yes, that is exactly what we have been seeing, as well. However, I'm
not sure if our JVM is that 'recent' (/me weeps silently) - but, I'll try to
confirm today across several of our clusters.
> 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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