[jira] [Commented] (BEAM-8415) Improve error message when adding a PTransform with a name that already exists in the pipeline

["Kenneth Knowles (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-8415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17108764#comment-17108764 ] 

Kenneth Knowles commented on BEAM-8415:
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I see you modified this for the Python SDK. So this may be resolved? But I think the error message is very similar in Java. Did you check?

> Improve error message when adding a PTransform with a name that already exists in the pipeline
> ----------------------------------------------------------------------------------------------
>
>                 Key: BEAM-8415
>                 URL: https://issues.apache.org/jira/browse/BEAM-8415
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core, sdk-py-core
>            Reporter: David Yan
>            Priority: Major
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Currently, when trying to apply a PTransform with a name that already exists in the pipeline, it returns a confusing error:
> Transform "XXX" does not have a stable unique label. This will prevent updating of pipelines. To apply a transform with a specified label write pvalue | "label" >> transform
> We'd like to improve this error message.



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