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https://issues.apache.org/jira/browse/KAFKA-3936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15413983#comment-15413983
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ASF GitHub Bot commented on KAFKA-3936:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/1711
> Validate user parameters as early as possible
> ---------------------------------------------
>
> Key: KAFKA-3936
> URL: https://issues.apache.org/jira/browse/KAFKA-3936
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Matthias J. Sax
> Assignee: Damian Guy
> Priority: Minor
> Labels: beginner, newbie, starter
> Fix For: 0.10.1.0
>
>
> Currently, parameters handed in by the user via public API, are not
> validated. For example {{stream.to(null)}} would fail when the underlying
> producer gets instantiated. This result in a stack trace from deep down in
> the library, making it hard to reason about the problem for the user.
> We want to check all given user parameters as early as possible and raise
> corresponding (and helpful!) exceptions to explain users what the problem is,
> and how to fix it. All parameter checks should get unit tested.
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