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https://issues.apache.org/jira/browse/KAFKA-10418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ron Dagostino resolved KAFKA-10418.
-----------------------------------
Resolution: Fixed
PR: https://github.com/apache/kafka/pull/9199
> Incomplete error/docs when altering topic configs via kafka-topics with
> --bootstrap-server
> ------------------------------------------------------------------------------------------
>
> Key: KAFKA-10418
> URL: https://issues.apache.org/jira/browse/KAFKA-10418
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ron Dagostino
> Assignee: Ron Dagostino
> Priority: Minor
> Fix For: 2.7.0
>
>
> Changing a topic config with the kafka-topics command while connecting to
> Kafka via --bootstrap-server (rather than connecting to ZooKeeper via
> --zookeeper) is not supported. The desired functionality is available
> elsewhere, though: it is possible to change a topic config while connecting
> to Kafka rather than ZooKeeper via the kafka-configs command instead.
> However, neither the kafka-topics error message received nor the kafka-topics
> help information itself indicates this other possibility. For example:
> {{$ kafka-topics.sh --bootstrap-server localhost:9092 --alter --topic test
> --config flush.messages=12345
> Option combination "[bootstrap-server],[config]" can't be used with option
> "[alter]"
> }}
> {{$ kafka-topics.sh
> ...
> --config <String: name=value> A topic configuration override for
> the topic being created or altered...It is supported only in combination with
> -- create if --bootstrap-server option is used.
> }}
> Rather than simply saying that what you want to do isn't available, it would
> be better to say also that you can do it with the kafka-configs command.
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