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https://issues.apache.org/jira/browse/BEAM-6751?focusedWorklogId=205848&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-205848
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ASF GitHub Bot logged work on BEAM-6751:
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Author: ASF GitHub Bot
Created on: 28/Feb/19 15:52
Start Date: 28/Feb/19 15:52
Worklog Time Spent: 10m
Work Description: kennknowles commented on issue #7955: [BEAM-6751]
Extend Kafka EOS mode whitelist / Warn instead of throw
URL: https://github.com/apache/beam/pull/7955#issuecomment-468324901
@chamikaramj @rangadi @mxm I wonder if this is now too big for this PR and
belongs on the dev@ list. I know there have been prior discussions but I'd like
to have a good agreed-upon plan.
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Issue Time Tracking
-------------------
Worklog Id: (was: 205848)
Time Spent: 50m (was: 40m)
> KafkaIO blocks FlinkRunner in EOS mode
> --------------------------------------
>
> 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: Critical
> Fix For: 2.12.0
>
> Time Spent: 50m
> 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 FlinkRunner supports exactly-once checkpointing but is blocked from using
> Kafka's exactly once mode.
> I wonder if such a list is easily maintainable? I think we should replace the
> list with a warning instead.
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