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Posted to issues@beam.apache.org by "Kenneth Knowles (Jira)" <ji...@apache.org> on 2021/03/31 22:37:00 UTC

[jira] [Updated] (BEAM-12040) WriteFiles withRunnerDeterminedShardingUnbounded doesn't work with session windows

     [ https://issues.apache.org/jira/browse/BEAM-12040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kenneth Knowles updated BEAM-12040:
-----------------------------------
    Status: Open  (was: Triage Needed)

> WriteFiles withRunnerDeterminedShardingUnbounded doesn't work with session windows
> ----------------------------------------------------------------------------------
>
>                 Key: BEAM-12040
>                 URL: https://issues.apache.org/jira/browse/BEAM-12040
>             Project: Beam
>          Issue Type: Improvement
>          Components: io-java-files
>            Reporter: Siyuan Chen
>            Priority: P2
>
> Currently the implementation of `withRunnerDeterminedShardingUnbounded` uses a stateful DoFn to achieve the grouping and batching of the input elements, which doesn't support session windows. One possible way is to add another GBK prior to the stateful DoFn to first get session windows merged and reify the window before invoking the sateful DoFn. 



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