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From "Andrey Klochkov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8755) Print thread dump when tests fail due to timeout
Date Wed, 12 Sep 2012 22:05:10 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13454418#comment-13454418
] 

Andrey Klochkov commented on HADOOP-8755:
-----------------------------------------

Aaron, I'll do the 1st improvement in this JIRA as it's really simple. 

Marking all the annotations with timeouts manually - agree, that's much simpler and more transparent.
The downside is polluting all the tests with it. In general limiting true unit tests with
timeouts isn't the right thing, and in our case we're just doing this to troubleshoot flakiness
of particular component tests. How about not having timeouts by default and instead marking
just those tests which fail intermittently?
                
> Print thread dump when tests fail due to timeout 
> -------------------------------------------------
>
>                 Key: HADOOP-8755
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8755
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 1.0.3, 0.23.1, 2.0.0-alpha
>            Reporter: Andrey Klochkov
>            Assignee: Andrey Klochkov
>         Attachments: HDFS-3762-branch-0.23.patch, HDFS-3762.patch, HDFS-3762.patch, HDFS-3762.patch,
HDFS-3762.patch, HDFS-3762.patch
>
>
> When a test fails due to timeout it's often not clear what is the root cause. See HDFS-3364
as an example.
> We can print dump of all threads in this case, this may help finding causes.

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