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https://issues.apache.org/jira/browse/BEAM-4086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16444404#comment-16444404
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Raghu Angadi commented on BEAM-4086:
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{{testUnboundedSourceWithoutBoundedWrapper()}} is the test that occasionally
hangs. Sent a fix for CPU spinning MockConsumer. As a side effect it seems to
avoid this flake. 2400 runs for gradle test runs in sequence passed.
I still don't know the root cause, will keep this bug open.
> KafkaIOTest is flaky
> --------------------
>
> Key: BEAM-4086
> URL: https://issues.apache.org/jira/browse/BEAM-4086
> Project: Beam
> Issue Type: Bug
> Components: io-java-kafka
> Affects Versions: 2.5.0
> Reporter: Ismaël Mejía
> Assignee: Raghu Angadi
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Noticed this while trying to do a simple change in KafkaIO this morning and
> corroborated with other contributors. If you run `./gradlew -p
> sdks/java/io/kafka/ clean build` it blocks indefinitely at least 1/3 of the
> times. However it passes ok with Maven.
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