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https://issues.apache.org/jira/browse/YARN-4478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15174968#comment-15174968
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Rohith Sharma K S commented on YARN-4478:
-----------------------------------------
In analysis of HADOOP-12687, test failures are not because of network
connectivity which makes DNS server down.
Hadoop security model obey to RFC standards. In
[comment|https://issues.apache.org/jira/browse/HADOOP-12687?focusedCommentId=15087185&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15087185],
Varun talks about RFC 1535. This RFC says hostname must be end with dot(".").
But jenkins machines does hostname are not configured with RFC which is
causing test failures.
As a test, this is able to reproduce in Ubuntu. After changing hostname ending
with dot("."), these test cases are passing. This change wants to bring in
YARN-precommit build machine too.
> [Umbrella] : Track all the Test failures in YARN
> ------------------------------------------------
>
> Key: YARN-4478
> URL: https://issues.apache.org/jira/browse/YARN-4478
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Reporter: Rohith Sharma K S
>
> Recently many test cases are failing either timed out or new bug fix caused
> impact. Many test faiures JIRA are raised and are in progress.
> This is to track all the test failures JIRA's
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