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https://issues.apache.org/jira/browse/KAFKA-13010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17380939#comment-17380939
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A. Sophie Blee-Goldman commented on KAFKA-13010:
------------------------------------------------
Not the exact same test, but I did manage to reproduce this same "only one
task" failure in
TaskMetadataIntegrationTest.shouldReportCorrectEndOffsetInformation:
{code:java}
java.lang.AssertionError: only one task
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:26)
at
org.apache.kafka.streams.integration.TaskMetadataIntegrationTest.getTaskMetadata(TaskMetadataIntegrationTest.java:163)
at
org.apache.kafka.streams.integration.TaskMetadataIntegrationTest.shouldReportCorrectEndOffsetInformation(TaskMetadataIntegrationTest.java:144)
{code}
I saved the logs since they should actually be the full, un-truncated logs –
hope this helps:
[^TaskMetadataIntegrationTest#shouldReportCorrectEndOffsetInformation.rtf]
> Flaky test
> org.apache.kafka.streams.integration.TaskMetadataIntegrationTest.shouldReportCorrectCommittedOffsetInformation()
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-13010
> URL: https://issues.apache.org/jira/browse/KAFKA-13010
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Bruno Cadonna
> Priority: Major
> Labels: flaky-test
> Attachments:
> TaskMetadataIntegrationTest#shouldReportCorrectEndOffsetInformation.rtf
>
>
> Integration test {{test
> org.apache.kafka.streams.integration.TaskMetadataIntegrationTest.shouldReportCorrectCommittedOffsetInformation()}}
> sometimes fails with
> {code:java}
> java.lang.AssertionError: only one task
> at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:26)
> at
> org.apache.kafka.streams.integration.TaskMetadataIntegrationTest.getTaskMetadata(TaskMetadataIntegrationTest.java:162)
> at
> org.apache.kafka.streams.integration.TaskMetadataIntegrationTest.shouldReportCorrectCommittedOffsetInformation(TaskMetadataIntegrationTest.java:117)
> {code}
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