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Current state: "Under Discussion"

Discussion thread: here [Change the link from the KIP proposal email archive to your own email thread] 

JIRA: here 

Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).

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Compatibility, Deprecation, and Migration Plan

• Existing Admin clients using older versions will not request fenced brokers in DescribeCluster requests and the default is to return unfenced brokers only. This keeps older clients compatible with newer brokers.
• Newer Admin clients connecting to older brokers will use the older protocol version and hence will not request fenced brokers.

Rejected Alternatives

Returning inactive observer nodes in DescribeMetadataQuorumResponse was considered. However, observers information is only stored in the quorum leader's memory state, therefore this information is lost when there is a leader change. 

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