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Posted to issues@beam.apache.org by "Luke Cwik (Jira)" <ji...@apache.org> on 2022/01/12 04:52:00 UTC
[jira] [Assigned] (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 ]
Luke Cwik reassigned BEAM-9624:
-------------------------------
Assignee: Andrew Crites
> 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
> Assignee: 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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