David Mao created KAFKA-13134:
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Summary: Heartbeat Request high lock contention
Key: KAFKA-13134
URL: https://issues.apache.org/jira/browse/KAFKA-13134
Project: Kafka
Issue Type: Improvement
Components: core
Reporter: David Mao
Assignee: David Mao
On a cluster with high heartbeat rate, a lock profile showed high contention
for the GroupMetadata lock.
We can significantly reduce this by invoking the response callback outside of
the group metadata lock.
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