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https://issues.apache.org/jira/browse/KAFKA-6546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16508476#comment-16508476
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ASF GitHub Bot commented on KAFKA-6546:
---------------------------------------
rajinisivaram opened a new pull request #5189: KAFKA-6546: Use
LISTENER_NOT_FOUND_ON_LEADER error for missing listener
URL: https://github.com/apache/kafka/pull/5189
For metadata request version 6 and above, use a different error code to
indicate missing listener on leader broker to enable diagnosis of listener
configuration issues.
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> Add ENDPOINT_NOT_FOUND_ON_LEADER error code for missing listener
> ----------------------------------------------------------------
>
> Key: KAFKA-6546
> URL: https://issues.apache.org/jira/browse/KAFKA-6546
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Reporter: Rajini Sivaram
> Assignee: Rajini Sivaram
> Priority: Major
> Fix For: 2.1.0
>
>
> 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.
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