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https://issues.apache.org/jira/browse/BEAM-324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949417#comment-15949417
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Daniel Halperin commented on BEAM-324:
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[~bchambers] -- I know we've made some more improvements e.g., SimpleFunction
with Lambdas. Any specific work remaining, or open as a wish list item?
> Improve TypeDescriptor inference of DoFn's created inside a generic PTransform
> ------------------------------------------------------------------------------
>
> Key: BEAM-324
> URL: https://issues.apache.org/jira/browse/BEAM-324
> Project: Beam
> Issue Type: Wish
> Components: sdk-java-core
> Reporter: Ben Chambers
> Priority: Minor
>
> Commit
> https://github.com/apache/incubator-beam/commit/aa7f07fa5b22f3656d52dc9e1d4557bceb87c013
> introduced the ability to infer a {{TypeDescriptor}} from an object created
> inside a concrete instance of a {{PTransform}} and used it to simplify
> {{SimpleFunction}} usage.
> We should probably look at using the same mechanism elsewhere, such as when
> inferring the output type of a {{ParDo}}.
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