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https://issues.apache.org/jira/browse/FLINK-6549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16171380#comment-16171380
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Chesnay Schepler commented on FLINK-6549:
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1.4: 5fc1103ab6cb2819d693530f2ba4e09192a9c88d
> Improve error message for type mismatches with side outputs
> -----------------------------------------------------------
>
> Key: FLINK-6549
> URL: https://issues.apache.org/jira/browse/FLINK-6549
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Affects Versions: 1.3.0, 1.4.0
> Reporter: Chesnay Schepler
> Assignee: Bowen Li
> Priority: Minor
>
> A type mismatch when using side outputs causes a ClassCastException to be
> thrown. It would be neat to include the name of the OutputTags in the
> exception message.
> This can occur when multiple {{OutputTag]}s with different types but
> identical names are being used.
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