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https://issues.apache.org/jira/browse/CASSANDRA-6541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeremiah Jordan updated CASSANDRA-6541:
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Description:
Newer versions of Oracle's Hotspot JVM , post 6u43 (maybe earlier) and 7u25
(maybe earlier), 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. Adding:
{noformat}
JVM_OPTS="$JVM_OPTS -XX:+CMSClassUnloadingEnabled"
{noformat}
The the options in cassandra-env.sh alleviates the problem.
was:Newer versions of Oracle's Hotspot JVM , post 6u45, are experiencing
issues with GC and JMX where heap slowly fills up overtime until OOM or a full
GC event occurs, specifically when CMS is leveraged. Running repair
exacerbates this issue. The configuration added to the Summary line helps
alleviate this behavior and should be included in the C* config files by
default.
> Add JVM_OPTS="$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 6u43 (maybe earlier) and 7u25
> (maybe earlier), 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. Adding:
> {noformat}
> JVM_OPTS="$JVM_OPTS -XX:+CMSClassUnloadingEnabled"
> {noformat}
> The the options in cassandra-env.sh alleviates the problem.
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