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https://issues.apache.org/jira/browse/BEAM-9624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luke Cwik updated BEAM-9624:
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Resolution: Fixed
Status: Resolved (was: Open)
> 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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