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Posted to issues@beam.apache.org by "Kenneth Knowles (Jira)" <ji...@apache.org> on 2022/01/12 03:50:04 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 ]

Kenneth Knowles updated BEAM-9624:
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This Jira ticket has a pull request attached to it, but is still open. Did the pull request resolve the issue? If so, could you please mark it resolved? This will help the project have a clear view of its open issues.

> 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: P3
>          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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