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Posted to github@beam.apache.org by "hjtran (via GitHub)" <gi...@apache.org> on 2025/06/14 00:30:30 UTC

[PR] remove unnecessary output_hint inferring logic [beam]

hjtran opened a new pull request, #35283:
URL: https://github.com/apache/beam/pull/35283

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Re: [PR] Fix `beam.Filter` type hints for case where filter_fn specifies output type hint but not input type hint [beam]

Posted by "hjtran (via GitHub)" <gi...@apache.org>.
hjtran commented on PR #35283:
URL: https://github.com/apache/beam/pull/35283#issuecomment-2980905141

   @jrmccluskey with the current implementation of `beam.Filter`, the output pcollection type is not always the same as the input pcollection., e.g. the following would fail:
   ```python
     import apache_beam as beam
   
     def is_even(num: float):
       return num % 2 == 0.0
   
     with beam.Pipeline() as pipeline:
       even_nums = (
           pipeline
           |  beam.Create([1, 2
           ]).with_output_types(int)
           | beam.Filter(is_even))
       assert even_nums.element_type is int
       ```
       
       We could fix this by implementing `Filter` as a composite `PTransform` and just set the output pcollection element_type manually in `Filter.expand`. Would it be worth doing this? Not sure how many use cases rely specifically on `beam.Filter` being a `ParDo` or whether that's something we need to guarantee


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Re: [PR] Fix `beam.Filter` type hints for case where filter_fn specifies output type hint but not input type hint [beam]

Posted by "jrmccluskey (via GitHub)" <gi...@apache.org>.
jrmccluskey merged PR #35283:
URL: https://github.com/apache/beam/pull/35283


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Re: [PR] Fix `beam.Filter` type hints for case where filter_fn specifies output type hint but not input type hint [beam]

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #35283:
URL: https://github.com/apache/beam/pull/35283#issuecomment-2974825441

   Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control. If you'd like to restart, comment `assign set of reviewers`


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Re: [PR] Fix `beam.Filter` type hints for case where filter_fn specifies output type hint but not input type hint [beam]

Posted by "hjtran (via GitHub)" <gi...@apache.org>.
hjtran commented on PR #35283:
URL: https://github.com/apache/beam/pull/35283#issuecomment-2974824425

   R: @jrmccluskey 


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