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https://issues.apache.org/jira/browse/HADOOP-4475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12666148#action_12666148
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Steve Loughran commented on HADOOP-4475:
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That's HADOOP-2827
> The (deprecated) method NetUtils.getServerAddress() doesn't validate
> configuration values enough
> ------------------------------------------------------------------------------------------------
>
> Key: HADOOP-4475
> URL: https://issues.apache.org/jira/browse/HADOOP-4475
> Project: Hadoop Core
> Issue Type: Bug
> Components: conf
> Affects Versions: 0.20.0
> Reporter: Steve Loughran
> Priority: Minor
>
> Although HADOPP-2827 wants to kill this method, it is handy, but it doesn't
> have enough address validation, and can return a null value, which triggers
> NPEs a bit later on in the code
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