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https://issues.apache.org/jira/browse/HADOOP-13571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17243527#comment-17243527
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Eric Badger commented on HADOOP-13571:
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Amazingly, it still applies and is applicable.
> ServerSocketUtil.getPort() should use loopback address, not 0.0.0.0
> -------------------------------------------------------------------
>
> Key: HADOOP-13571
> URL: https://issues.apache.org/jira/browse/HADOOP-13571
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Eric Badger
> Assignee: Eric Badger
> Priority: Major
> Attachments: HADOOP-13571.001.patch
>
>
> Using 0.0.0.0 to check for a free port will succeed even if there's something
> bound to that same port on the loopback interface. Since this function is
> used primarily in testing, it should be checking the loopback interface for
> free ports.
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