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https://issues.apache.org/jira/browse/CASSANDRA-12312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15402358#comment-15402358
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T Jake Luciani commented on CASSANDRA-12312:
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Looks great, would you mind adding the new metrics to the
[docs|https://github.com/apache/cassandra/blob/trunk/doc/source/operating/metrics.rst]?
> Restore JVM metric export for metric reporters
> ----------------------------------------------
>
> Key: CASSANDRA-12312
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12312
> Project: Cassandra
> Issue Type: Bug
> Reporter: Stefan Podkowinski
> Assignee: Stefan Podkowinski
> Labels: lhf
> Fix For: 2.2.x, 3.0.x, 3.x
>
> Attachments: 12312-2.2.patch, 12312-3.0.patch, 12312-trunk.patch,
> metrics-jvm-3.1.0.jar.asc
>
>
> JVM instrumentation as part of dropwizard metrics has been moved to a
> separate {{metrics-jvm}} artifact in metrics-v3.0. After CASSANDRA-5657, no
> jvm related metrics will be exported to any reporter configured via
> {{metrics-reporter-config}}, as this isn't part of {{metrics-core}} anymore.
> As memory and GC stats are essential for monitoring Cassandra, this turns out
> to be a blocker for us for upgrading to 2.2.
> I've included a patch that would add the now separate {{metrics-jvm}} package
> and enables some of the provided metrics on startup in case a metrics
> reporter is used ({{-Dcassandra.metricsReporterConfigFile}}).
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