fujian created KAFKA-19784:
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Summary: Expose Rack ID in MemberDescription
Key: KAFKA-19784
URL: https://issues.apache.org/jira/browse/KAFKA-19784
Project: Kafka
Issue Type: Task
Components: admin, clients
Reporter: fujian
Currently, the {{{}AdminClient{}}}’s {{describeConsumerGroups}} API returns a
{{MemberDescription}} that does *not* include rack information, even though the
underlying {{ConsumerGroupDescribeResponse}} protocol already supports a
{{rackId}} field.
This causes users to be unable to retrieve member rack information through the
Admin API.
Rack information is crucial for:
* Monitoring and visualization tools
* Operational analysis of rack distribution
* Diagnosing rack-aware assignment issues
In addition, StreamsGroupMemberDescription already includes the rackId, so
adding it here would make the behavior more consistent.
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