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https://issues.apache.org/jira/browse/KAFKA-7350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lucas Wang reassigned KAFKA-7350:
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Assignee: Ahmed Al-Mehdi (was: Lucas Wang)
> Improve or remove the PreferredReplicaImbalanceCount metric
> -----------------------------------------------------------
>
> Key: KAFKA-7350
> URL: https://issues.apache.org/jira/browse/KAFKA-7350
> Project: Kafka
> Issue Type: Improvement
> Reporter: Lucas Wang
> Assignee: Ahmed Al-Mehdi
> Priority: Major
>
> In KAFKA-6753, we identified that in the ControllerEventManager, updating two
> metrics after processing every controller event ends up consuming too much
> CPU. The first metric OfflinePartitionCount is resolved in KAFKA-6753, and
> this ticket is for tracking progress on the 2nd metric
> PreferredReplicaImbalanceCount.
> The options we have about this metric include
> 1. Remove this metric given that if necessary, the value of this metric can
> be derived by getting the metadata of all topics in the cluster
> 2. Piggyback the update of the metric every time the auto leader balancer
> runs. The benefit is keeping this metric. However the downside is that this
> metric may then get obsolete and incorrect depending on when it's checked.
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