Boyuan Zhang created BEAM-7626:
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Summary: ExecutableStage should be able to accept multiple input
PCollection
Key: BEAM-7626
URL: https://issues.apache.org/jira/browse/BEAM-7626
Project: Beam
Issue Type: New Feature
Components: java-fn-execution
Reporter: Boyuan Zhang
Current implementation of ExecutableStage only accepts one input PColletion:
https://github.com/apache/beam/blob/5ee4cf4e4880782492ec26f2b454a6df9b25f1e2/model/pipeline/src/main/proto/beam_runner_api.proto#L1247.
But it's possible that a ExecutableStage has multiple inputs.
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