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https://issues.apache.org/jira/browse/BEAM-11427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17246201#comment-17246201
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Robert Burke commented on BEAM-11427:
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2GB for a single message is a protocol buffer limitation.
We likely need a separate Jira for the umbrella issue of a protocol for
paginated side inputs and user-state requests.
> Create side input load test for Python on Flink
> -----------------------------------------------
>
> Key: BEAM-11427
> URL: https://issues.apache.org/jira/browse/BEAM-11427
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Kyle Weaver
> Priority: P2
>
> Currently the Python side input load test runs on Dataflow, but not on Flink.
> We suspect tests of side inputs > 2GB would fail on portable runners due to
> GRPC size limitations.
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