[jira] [Created] (KAFKA-14045) Heartbeat threads cause high CPU usage after broker shut down

[gdd sop (Jira)]

gdd sop created KAFKA-14045:
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             Summary: 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


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.

![](blob:https://issues.apache.org/b9da8430-d4e4-46c4-a9a1-655b0282950e)

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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