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https://issues.apache.org/jira/browse/BEAM-11998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17502089#comment-17502089
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Benjamin Tan commented on BEAM-11998:
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Awesome! We're facing this issue too!
> Portable runners should be able to issue checkpoints to Splittable DoFn
> -----------------------------------------------------------------------
>
> Key: BEAM-11998
> URL: https://issues.apache.org/jira/browse/BEAM-11998
> Project: Beam
> Issue Type: New Feature
> Components: cross-language, runner-flink, runner-spark
> Reporter: Boyuan Zhang
> Priority: P1
> Attachments: read.png
>
>
> To execute unbounded Splittable DoFn over fnapi in streaming mode properly,
> portable runners should issue split(ProcessBundleSplitRequest with
> fraction_of_remainder > 0) or simply checkpoint(ProcessBundleSplitRequest
> with fraction_of_remainder == 0) to SDK regularly to make current bundle
> finished processing instead of running forever.
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