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https://issues.apache.org/jira/browse/KAFKA-14045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17562402#comment-17562402
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gdd sop commented on KAFKA-14045:
---------------------------------
!3.png!
> Heartbeat threads cause high CPU usage after broker shut down
> --------------------------------------------------------------
>
> Key: KAFKA-14045
> URL: https://issues.apache.org/jira/browse/KAFKA-14045
> Project: Kafka
> Issue Type: Bug
> Reporter: gdd sop
> Priority: Major
>
> 1. shut down all brokers
> 2. execute top command and found out the kafka coordinator CPU usage is high
>
> Here is the flame graph collectd by arthas.
>
> The issues will recover after restart the brokers.
> {*}{{*}}Maybe it should wait before the pollNoWakeup methods{{*}}{*}
> [https://github.com/apache/kafka/blob/2.8/clients/src/main/java/org/apache/kafka/clients/consumer/internals/AbstractCoordinator.java#L1372]
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