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https://issues.apache.org/jira/browse/BEAM-2717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17134522#comment-17134522
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Udi Meiri commented on BEAM-2717:
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Mailing list thread:
https://lists.apache.org/thread.html/r625ed48a34e9c7c1a5a226da9b70e0dbe71517bba65e9c8a9e7d7f6b%40%3Cuser.beam.apache.org%3E
It seems that to_type_hint was not implemented for ProtoCoder and I'm not sure
why, since it has the attribute {code}proto_message_type{code}.
> Infer coders in SDK prior to handing off pipeline to Runner
> -----------------------------------------------------------
>
> Key: BEAM-2717
> URL: https://issues.apache.org/jira/browse/BEAM-2717
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Robert Bradshaw
> Priority: P3
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Currently all runners have to duplicate this work, and there's also a hack
> storing the element type rather than the coder in the Runner protos.
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