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https://issues.apache.org/jira/browse/BEAM-6751?focusedWorklogId=214701&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-214701
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ASF GitHub Bot logged work on BEAM-6751:
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Author: ASF GitHub Bot
Created on: 18/Mar/19 11:27
Start Date: 18/Mar/19 11:27
Worklog Time Spent: 10m
Work Description: mxm commented on issue #7991: [BEAM-6751] Add KafkaIO
EOS support to Flink via @RequiresStableInput
URL: https://github.com/apache/beam/pull/7991#issuecomment-473872445
Thanks for the reviews. Let's see if we can make the buffering part of
runners-core once other Runners look into supporting RequiresStableinput.
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Issue Time Tracking
-------------------
Worklog Id: (was: 214701)
Time Spent: 10h 10m (was: 10h)
> KafkaIO's EOS mode does not work with FlinkRunner
> -------------------------------------------------
>
> Key: BEAM-6751
> URL: https://issues.apache.org/jira/browse/BEAM-6751
> Project: Beam
> Issue Type: Bug
> Components: io-java-kafka, runner-flink
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Fix For: 2.12.0
>
> Time Spent: 10h 10m
> Remaining Estimate: 0h
>
> KafkaIO has a validation check which whitelists certain runners capable of
> provide exactly-once semantics:
> {noformat}
> if ("org.apache.beam.runners.direct.DirectRunner".equals(runner)
> || runner.startsWith("org.apache.beam.runners.dataflow.")
> || runner.startsWith("org.apache.beam.runners.spark.") {
> ...
> {noformat}
> The Flink supports exactly-once checkpointing but the Flink Runner can't
> utilize it in the way KafkaIO intends it.
> I think we should remove the check in favor of checking for translation of
> {{@RequiresStableInput}}. Changes to KafkaIO might have to be made to support
> EOS efficiently with the Flink Runner.
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