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https://issues.apache.org/jira/browse/BEAM-2898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16474569#comment-16474569
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Ben Sidhom commented on BEAM-2898:
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I'm going to mark this as fixed since we have fusion and executable stage
representation. Fusion is exercised by the portable translator.
> Flink supports chaining/fusion of single-SDK stages
> ---------------------------------------------------
>
> Key: BEAM-2898
> URL: https://issues.apache.org/jira/browse/BEAM-2898
> Project: Beam
> Issue Type: Sub-task
> Components: runner-flink
> Reporter: Henning Rohde
> Assignee: Ben Sidhom
> Priority: Major
> Labels: portability
> Fix For: Not applicable
>
> Time Spent: 4h 50m
> Remaining Estimate: 0h
>
> The Fn API supports fused stages, which avoids unnecessarily round-tripping
> the data over the Fn API between stages. The Flink runner should use that
> capability for better performance.
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