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https://issues.apache.org/jira/browse/MAPREDUCE-5938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14053320#comment-14053320
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Ashutosh Jindal commented on MAPREDUCE-5938:
--------------------------------------------

[~vinodkv]  The reason here is security. In case of a dual IP machine, we can 
restrict shuffle port to bind to a specific IP instead of all the interfaces.

> Shuffle port in nodemanager is binding to all IPs 
> --------------------------------------------------
>
>                 Key: MAPREDUCE-5938
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5938
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Ashutosh Jindal
>            Assignee: Ashutosh Jindal
>         Attachments: issue.jpg, mapreduce-5938.patch, result_after_fix.jpg
>
>
> nodemanager port mapreduce.shuffle.port is listening to all ip



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