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https://issues.apache.org/jira/browse/FLINK-3892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15290843#comment-15290843
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ASF GitHub Bot commented on FLINK-3892:
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Github user zentol commented on the pull request:
https://github.com/apache/flink/pull/2008#issuecomment-220283072
+1
> ConnectionUtils may die with NullPointerException
> -------------------------------------------------
>
> Key: FLINK-3892
> URL: https://issues.apache.org/jira/browse/FLINK-3892
> Project: Flink
> Issue Type: Bug
> Components: YARN Client
> Affects Versions: 1.1.0, 1.0.3
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Minor
> Fix For: 1.1.0
>
>
> If an invalid hostname is specificed or the hostname can't be resolved from
> the current interface, {{ConnectionUtils.findAddressUsingStrategy}} may throw
> a {{NullPointerException}}. When trying to access the {{InetAddress}} of an
> {{InetSocketAddress}}, null is returned when the host could not been resolved.
> The solution is to abort the attempt to find the local address if the host
> couldn't be resolved.
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