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https://issues.apache.org/jira/browse/BEAM-11938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17341428#comment-17341428
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Chamikara Madhusanka Jayalath commented on BEAM-11938:
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I ran into this when running a pipeline. After a bit of debugging, the issue
was that the cross-language pipeline had an input PCollection where the Coder
was "beam:coder:pickled_python:v1". Java cannot process such a PCollection
hence this was an incorrect usage of a cross-language transform.
I think this is working as intended and error message produced is correct.
> IllegalArgumentException: Unknown Coder URN when using x-lang Kafka
> transforms
> -------------------------------------------------------------------------------
>
> Key: BEAM-11938
> URL: https://issues.apache.org/jira/browse/BEAM-11938
> Project: Beam
> Issue Type: Bug
> Components: cross-language
> Affects Versions: 2.28.0
> Reporter: Chamikara Madhusanka Jayalath
> Priority: P2
> Labels: stale-P2
>
> Full stack trace:
> [https://gist.github.com/amit5148/fcf3eea068020283b2c1ef04b57d493b]
>
> Dev thread:
> https://lists.apache.org/thread.html/r7f4df77267c4c20327f7112d17bf0fc0b88d920811e8b4b3c0a899dd%40%3Cdev.beam.apache.org%3E
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