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https://issues.apache.org/jira/browse/HADOOP-9217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13561938#comment-13561938
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Aaron T. Myers commented on HADOOP-9217:
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Hey Andrey, thanks a lot for noticing this and providing a fix. Since this is a
newly-discovered bug, I think we should open a new JIRA for this change.
> Print thread dumps when hadoop-common tests fail
> ------------------------------------------------
>
> Key: HADOOP-9217
> URL: https://issues.apache.org/jira/browse/HADOOP-9217
> Project: Hadoop Common
> Issue Type: Test
> Components: test
> Affects Versions: 2.0.2-alpha, 0.23.5
> Reporter: Andrey Klochkov
> Assignee: Andrey Klochkov
> Fix For: 2.0.3-alpha, 0.23.6
>
> Attachments: HADOOP-9217-fix1.patch, HADOOP-9217.patch
>
>
> Printing thread dumps when tests fail due to timeouts was introduced in
> HADOOP-8755, but was enabled in M/R, HDFS and Yarn only.
> It makes sense to enable in hadoop-common as well. In particular,
> TestZKFailoverController seems to be one of the most flaky tests in trunk
> currently and having thread dumps may help debugging this.
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