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Posted to issues@beam.apache.org by "Beam JIRA Bot (Jira)" <ji...@apache.org> on 2020/08/10 17:07:09 UTC

[jira] [Updated] (BEAM-9624) Combine operation should support only converting to accumulators

     [ https://issues.apache.org/jira/browse/BEAM-9624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Beam JIRA Bot updated BEAM-9624:
--------------------------------
    Labels: stale-P2  (was: )

> Combine operation should support only converting to accumulators
> ----------------------------------------------------------------
>
>                 Key: BEAM-9624
>                 URL: https://issues.apache.org/jira/browse/BEAM-9624
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-core
>            Reporter: Andrew Crites
>            Priority: P2
>              Labels: stale-P2
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> For streaming pipelines, we want to be able to lift the combiner into the MergeBuckets without having to also do a PartialGroupByKey before the shuffle. We don't want to do the PGBK since it could cause non-deterministic results when used with some triggers.
> We propose adding a new URN for doing just the convert to accumulators step and adding support for it in Java/Python/Go.



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