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https://issues.apache.org/jira/browse/BEAM-9558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17080543#comment-17080543
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Kyle Weaver commented on BEAM-9558:
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#11314 is merged, is this good now?
> Make end of data channel explicit
> ---------------------------------
>
> Key: BEAM-9558
> URL: https://issues.apache.org/jira/browse/BEAM-9558
> Project: Beam
> Issue Type: Improvement
> Components: beam-model
> Reporter: Robert Bradshaw
> Assignee: Robert Bradshaw
> Priority: Major
> Fix For: 2.21.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Currently the end of a data channel is implicitly marked by sending an empty
> data block. The protocol would be simplified by making this explicit, and it
> would also prevent data loss bugs that might occur by accidentally sending an
> empty block.
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