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