[
https://issues.apache.org/jira/browse/BEAM-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17549296#comment-17549296
]
Danny McCormick commented on BEAM-12420:
----------------------------------------
This issue has been migrated to https://github.com/apache/beam/issues/20901
> TypeDescriptor information gets lost when applying multiple DoFn on Composite
> Transform
> ---------------------------------------------------------------------------------------
>
> Key: BEAM-12420
> URL: https://issues.apache.org/jira/browse/BEAM-12420
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Ismaël Mejía
> Priority: P3
>
> While working on BEAM-12384 to preserve correctly the typeDescriptor of the
> Read transform. I noticed that ParDo passes the outputType information into
> the next transforms by taking the output of `getOutputTypeDescriptor`
> specified in the `DoFn`, but the subsequent transform does not get the full
> inputTypeDescriptor.
> There are other open questions:
> 1. How can we make this easier for users who rarely override the
> getOutputTypeDescriptor?
> 2. Where the typeDescriptor should come in the SDF case, from the Restriction?
> For more details:
> https://github.com/apache/beam/pull/14854#issuecomment-848793500
>
>
>
--
This message was sent by Atlassian Jira
(v8.20.7#820007)
