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https://issues.apache.org/jira/browse/MAPREDUCE-5481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762004#comment-13762004
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Mariappan Asokan commented on MAPREDUCE-5481:
---------------------------------------------
I noticed similar timeout on my system. Although I am not familiar with the
code related to this problem, here is what I noticed by looking at the test
logs. The Resource Manager comes up listening on a random free port in
localhost like localhost:49170. When a client(from the test) connects through
RMProxy it is trying to resolve localhost through name server(not by local
hosts file.) This causes failure to connect to Resource Manager and after
certain number of retries the test timeouts.
> TestUberAM timeout
> ------------------
>
> Key: MAPREDUCE-5481
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5481
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, test
> Affects Versions: 3.0.0
> Reporter: Jason Lowe
>
> TestUberAM has been timing out on trunk for some time now and surefire then
> fails the build. I'm not able to reproduce it locally, but the Jenkins
> builds have been seeing it fairly consistently. See
> https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1529/console
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