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https://issues.apache.org/jira/browse/YARN-3752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14567763#comment-14567763
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Masatake Iwasaki commented on YARN-3752:
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While I am doing trial-and-error, using 127.0.0.1 instead of 0.0.0.0 for server
addresses fixed this.
> TestRMFailover fails due to intermittent UnknownHostException
> -------------------------------------------------------------
>
> Key: YARN-3752
> URL: https://issues.apache.org/jira/browse/YARN-3752
> Project: Hadoop YARN
> Issue Type: Bug
> Components: test
> Reporter: Masatake Iwasaki
> Assignee: Masatake Iwasaki
> Priority: Minor
>
> Client fails to create connection due to UnknownHostException while client
> retries to connect to next RM after failover in unit test.
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