Heejong Lee created BEAM-8804:
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Summary: PCollectionList support in cross-language transforms
Key: BEAM-8804
URL: https://issues.apache.org/jira/browse/BEAM-8804
Project: Beam
Issue Type: Improvement
Components: beam-model
Reporter: Heejong Lee
Currently, Beam model doesn't have any information on the order of output
PCollections from PTransforms. So, PCollectionList needs to be converted to
PCollectionTuple when it goes across the cross-language boundary (or even in
the same language, when it is converted between in-memory object and proto).
Maybe we should add more fields in PTransform proto definition to keep the
ordering information.
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