[jira] [Updated] (KAFKA-5096) Only log invalid user configs and overwrite with correct one

["Mariam John (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mariam John updated KAFKA-5096:
-------------------------------
    Reviewer: Matthias J. Sax
      Status: Patch Available  (was: Open)

> 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
>
> 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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