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https://issues.apache.org/jira/browse/TEZ-4119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17027808#comment-17027808
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Ahmed Hussein commented on TEZ-4119:
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Hi [~abstractdog], thanks for reporting this issue.
I recently worked on a similar flaky test case for the MAPREDUCE-7259
(testSpeculateSuccessfulWithUpdateEvents fails Intermittently). I agree with
you that this could be caused by timing issues that makes the blocking thread
misses the speculator thread.
Have you been able to make any progress on that? If not, let me know if you
want me to take over.
> TestSpeculation is flaky
> ------------------------
>
> Key: TEZ-4119
> URL: https://issues.apache.org/jira/browse/TEZ-4119
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Attachments: jstack.log, jstack4.log, jstack6.log,
> org.apache.tez.dag.app.TestSpeculation-output.txt
>
>
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