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https://issues.apache.org/jira/browse/BEAM-1876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Groh resolved BEAM-1876.
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Resolution: Fixed
Fix Version/s: First stable release
> GroupIntoBatches may be able to use Combine.BinaryCombineLongFn
> ---------------------------------------------------------------
>
> Key: BEAM-1876
> URL: https://issues.apache.org/jira/browse/BEAM-1876
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Thomas Groh
> Priority: Trivial
> Labels: newbie, starter
> Fix For: First stable release
>
>
> This should reduce the complexity of the CombineFn by removing the need to
> merge accumulators or extract output.
> It may need to be refactored into a variable so the accumulator coder can be
> obtained.
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