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From "Kenneth Knowles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-2486) Should throws some useful messages when statefulParDo use non-KV input
Date Thu, 22 Jun 2017 02:56:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-2486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16058646#comment-16058646
] 

Kenneth Knowles commented on BEAM-2486:
---------------------------------------

Hmm, I thought this was done in {{DoFnSignatures}}. It is definitely a runner-independent
error.

> Should throws some useful messages when statefulParDo use non-KV input
> ----------------------------------------------------------------------
>
>                 Key: BEAM-2486
>                 URL: https://issues.apache.org/jira/browse/BEAM-2486
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-core, runner-flink
>            Reporter: Jingsong Lee
>            Assignee: Kenneth Knowles
>             Fix For: 2.1.0
>
>
> Now Flink runner will throws a ClassCastException without detail messages when a statefulParDo
use non-KV input. It is not easy for users to find errors and causes. 



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