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https://issues.apache.org/jira/browse/HADOOP-12687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sunil G updated HADOOP-12687:
-----------------------------
    Description: 
>From 
>https://builds.apache.org/job/PreCommit-YARN-Build/9661/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client-jdk1.7.0_79.txt,
> we can see the tests in TestYarnClient, TestAMRMClient and TestNMClient get 
>timeout which can be reproduced locally.

When {{/etc/hosts}} has multiple loopback entries, 



  was:
>From 
>https://builds.apache.org/job/PreCommit-YARN-Build/9661/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client-jdk1.7.0_79.txt,
> we can see the tests in TestYarnClient, TestAMRMClient and TestNMClient get 
>timeout which can be reproduced locally.




> SecureUtil#getByName should also try to resolve direct hostname incase 
> multiple loopback addresses are present in etc/hosts
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12687
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12687
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Junping Du
>            Assignee: Sunil G
>              Labels: security
>         Attachments: 0001-YARN-4352.patch, 0002-YARN-4352.patch, 
> 0003-HADOOP-12687.patch
>
>
> From 
> https://builds.apache.org/job/PreCommit-YARN-Build/9661/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-client-jdk1.7.0_79.txt,
>  we can see the tests in TestYarnClient, TestAMRMClient and TestNMClient get 
> timeout which can be reproduced locally.
> When {{/etc/hosts}} has multiple loopback entries, 



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