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https://issues.apache.org/jira/browse/BEAM-11998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17418835#comment-17418835
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Chamikara Madhusanka Jayalath commented on BEAM-11998:
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Actually I think if you use 'max_num_records' or `max_read_time` you should not
run into this issue at all (hence no need for 'use_deprecated_read') since
Kafka will be reading a bounded PCollection.
But folks usually want to read an unbounded PCollection using Kafka and above
flags are not intended for production use as you mentioned.
> 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: P2
> 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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