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https://issues.apache.org/jira/browse/KAFKA-2689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14974903#comment-14974903
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ASF GitHub Bot commented on KAFKA-2689:
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Github user enothereska closed the pull request at:
https://github.com/apache/kafka/pull/363
> Expose select gauges and metrics programmatically (not just through JMX)
> ------------------------------------------------------------------------
>
> Key: KAFKA-2689
> URL: https://issues.apache.org/jira/browse/KAFKA-2689
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Affects Versions: 0.9.0.0
> Reporter: Eno Thereska
> Assignee: Eno Thereska
> Labels: newbie
> Fix For: 0.9.0.0
>
>
> There are several gauges in core that are registered but cannot be accessed
> programmatically. For example, gauges "LeaderCount", "PartitionCount",
> "UnderReplicatedParittions" are all registered in ReplicaManager.scala but
> there is no way to access them programmatically if one has access to the
> kafka.server object. Other metrics, such as isrExpandRate (also in
> ReplicaManager.scala) can be accessed. The solution here is trivial, add a
> var <variable name> in front of newGauge, as shown below
> var partitionCount newGauge(
> "PartitionCount",
> new Gauge[Int] {
> def value = allPartitions.size
> }
> )
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