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Posted to issues@beam.apache.org by "Heejong Lee (Jira)" <ji...@apache.org> on 2019/11/21 22:36:00 UTC

[jira] [Updated] (BEAM-8804) PCollectionList support in cross-language transforms

     [ https://issues.apache.org/jira/browse/BEAM-8804?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Heejong Lee updated BEAM-8804:
------------------------------
    Description: 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).  (was: 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.)

> 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
>            Priority: Major
>
> 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).



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