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https://issues.apache.org/jira/browse/KAFKA-6299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16469557#comment-16469557
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ASF GitHub Bot commented on KAFKA-6299:
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hachikuji opened a new pull request #4989: MINOR: A few small cleanups from
KAFKA-6299
URL: https://github.com/apache/kafka/pull/4989
Use local fields in `AdminClientRunnable` to avoid the need to pass the
collections as method parameters and fix warnings about invalid javadoc tags.
Also use the `internals` package name for `AdminMetadataManager` for
consistency with `consumer.internals` and `producer.internals`
### 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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> Fix AdminClient error handling when metadata changes
> ----------------------------------------------------
>
> Key: KAFKA-6299
> URL: https://issues.apache.org/jira/browse/KAFKA-6299
> Project: Kafka
> Issue Type: Bug
> Reporter: Colin P. McCabe
> Assignee: Colin P. McCabe
> Priority: Major
> Fix For: 2.0.0
>
>
> * AdminClient should only call Metadata#requestUpdate when needed.
> * AdminClient should retry requests for which the controller has changed.
> * Fix an issue where AdminClient requests might not get a security exception,
> even when a metadata fetch fails with an authorization exception.
> * Fix a possible issue where AdminClient might leak a socket after the
> timeout expires on a hard close, if a very narrow race condition is hit
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