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https://issues.apache.org/jira/browse/BEAM-6506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16788064#comment-16788064
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Kenneth Knowles commented on BEAM-6506:
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There's not a component for the pieces of the Python codebase, quite, so just
moving this to core.
> Dataflow runner harness should always use proper coder URNs
> -----------------------------------------------------------
>
> Key: BEAM-6506
> URL: https://issues.apache.org/jira/browse/BEAM-6506
> Project: Beam
> Issue Type: Wish
> Components: sdk-py-core
> Reporter: Mark Liu
> Priority: Major
> Labels: portability, triaged
>
> This comes from a Python 3 incompatible bug and mentioned in
> https://github.com/apache/beam/pull/7521/files#r248993766. The fix decode
> payload unconditionally in Python 2 or 3 but suggested by [~robertwb]:
> "the Dataflow runner harness was fixed to always use proper coder URNs rather
> than stuffing json-ized dataflow v1b3 cloud proto representations into the
> payload".
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