[KAFKA-6546] Add ENDPOINT_NOT_FOUND_ON_LEADER error code for missing listener

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: core
• Assignee: Rajini Sivaram
• Reporter: Rajini Sivaram
• Reviewer: Ismael Juma
• Created: 08/Feb/18 23:00
• Updated: 20/Jun/18 17:32
• Resolved: 20/Jun/18 17:32

Description

In 1,1, if an endpoint is available on the broker processing a metadata request, but the corresponding listener is not available on the leader of a partition, LEADER_NOT_AVAILABLE is returned (earlier versions returned UNKNOWN_SERVER_ERROR). This could indicate broker misconfiguration where some brokers are not configured with all listeners or it could indicate a transient error when listeners are dynamically added, We want to treat the error as a transient error to process dynamic updates, but we should notify clients of the actual error. This change should be made when MetadataRequest version is updated so that LEADER_NOT_AVAILABLE is returned to older clients.

See https://cwiki.apache.org/confluence/display/KAFKA/KIP-226+-+Dynamic+Broker+Configuration and  https://github.com/apache/kafka/pull/4539 for details.

Issue Links

• links to: GitHub Pull Request #5189