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https://issues.apache.org/jira/browse/KAFKA-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110866#comment-16110866
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ASF GitHub Bot commented on KAFKA-5096:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/2990
> Only log invalid user configs and overwrite with correct one
> ------------------------------------------------------------
>
> Key: KAFKA-5096
> URL: https://issues.apache.org/jira/browse/KAFKA-5096
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Matthias J. Sax
> Assignee: Mariam John
> Priority: Minor
> Labels: beginner, newbie
> Fix For: 1.0.0
>
>
> Streams does not allow to overwrite some config parameters (eg,
> {{enable.auto.commit}}) Currently, we throw an exception, but this is
> actually not required, as Streams can just ignore/overwrite the user provided
> value.
> Thus, instead of throwing, we should just log a WARN message and overwrite
> the config with the values that suits Streams. (atm it's only one parameter
> {{enable.auto.commit}}), but with exactly-once it's going to be more (cf.
> KAFKA-4923). Thus, the scope of this ticket depends when it will be
> implemented (ie, before or after KAFKA-4923).
> This ticket should also include JavaDoc updates that explain what parameters
> cannot be specified by the user.
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