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https://issues.apache.org/jira/browse/KAFKA-12556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenbing Shen reassigned KAFKA-12556:
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Assignee: Wenbing Shen
> Add --under-preferred-replica-partitions option to describe topics command
> --------------------------------------------------------------------------
>
> Key: KAFKA-12556
> URL: https://issues.apache.org/jira/browse/KAFKA-12556
> Project: Kafka
> Issue Type: Improvement
> Components: tools
> Reporter: Wenbing Shen
> Assignee: Wenbing Shen
> Priority: Minor
>
> Whether the preferred replica is the partition leader directly affects the
> external output traffic of the broker. When the preferred replica of all
> partitions becomes the leader, the external output traffic of the broker will
> be in a balanced state. When there are a large number of partition leaders
> that are not preferred replicas, it will be destroyed this state of balance.
> Currently, the controller will periodically check the unbalanced ratio of the
> partition preferred replicas (if enabled) to trigger the preferred replica
> election, or manually trigger the election through the kafka-leader-election
> tool. However, if we want to know which partition leader is in the
> non-preferred replica, we need to look it up in the controller log or judge
> ourselves from the topic details list.
> We can add the --under-preferred-replica-partitions configuration option in
> TopicCommand describe topics to query the list of partitions in the current
> cluster that are in non-preferred replicas.
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