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https://issues.apache.org/jira/browse/BEAM-6373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16736082#comment-16736082
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Robert Burke commented on BEAM-6373:
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Without SplitableDoFn (SDF) , Go SDK jobs are unable to scale and divide work,
which includes any kind of Parallelism. This is being worked on this quarter.
See [https://beam.apache.org/roadmap/go-sdk] for additional information.
> Make Go SDK on Dataflow multi-threaded
> --------------------------------------
>
> Key: BEAM-6373
> URL: https://issues.apache.org/jira/browse/BEAM-6373
> Project: Beam
> Issue Type: Improvement
> Components: runner-dataflow, sdk-go
> Reporter: Andrew Brampton
> Assignee: Robert Burke
> Priority: Major
>
> When running on dataflow, with a machine with more than 1 V-CPU, the worker
> will never use more than 1 core of CPU. I presume this is because the
> Dataflow runner does not allow the worker to run multiple steps concurrently.
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