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https://issues.apache.org/jira/browse/KAFKA-13140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17443850#comment-17443850
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Ron Dagostino edited comment on KAFKA-13140 at 11/15/21, 2:25 PM:
------------------------------------------------------------------
No longer applies due to the adoption of [KIP-771: KRaft brokers without the
"controller" role should not expose controller
metrics|https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=188743985]
was (Author: rndgstn):
No longer applies due to the adoption of [KIP-7761: KRaft brokers without the
"controller" role should not expose controller
metrics|https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=188743985]
> KRaft brokers do not expose kafka.controller metrics, breaking backwards
> compatibility
> --------------------------------------------------------------------------------------
>
> Key: KAFKA-13140
> URL: https://issues.apache.org/jira/browse/KAFKA-13140
> Project: Kafka
> Issue Type: Bug
> Components: kraft
> Affects Versions: 2.8.0, 3.0.0
> Reporter: Ron Dagostino
> Assignee: Ron Dagostino
> Priority: Major
> Fix For: 3.2.0
>
>
> The following controller metrics are exposed on every broker in a
> ZooKeeper-based (i.e. non-KRaft) cluster regardless of whether the broker is
> the active controller or not, but these metrics are not exposed on KRaft
> nodes that have process.roles=broker (i.e. KRaft nodes that do not implement
> the controller role). For backwards compatibility, KRaft nodes that are just
> brokers should expose these metrics with values all equal to 0: just like
> ZooKeeper-based brokers do when they are not the active controller.
> kafka.controller:type=KafkaController,name=ActiveControllerCount
> kafka.controller:type=KafkaController,name=GlobalTopicCount
> kafka.controller:type=KafkaController,name=GlobalPartitionCount
> kafka.controller:type=KafkaController,name=OfflinePartitionsCount
> kafka.controller:type=KafkaController,name=PreferredReplicaImbalanceCount
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