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https://issues.apache.org/jira/browse/HADOOP-8873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13705046#comment-13705046
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Suresh Srinivas commented on HADOOP-8873:
-----------------------------------------

[~ajisakaa] I took a quick look at HADOOP-8175. The way I understand it is  
(correct me if I am wrong):
# Behavior of mkdir without -p flag remains the same
# mkdir with -p does not fail if the target directory already exists.

Given that this is compatible, we should be able to get this into branch-1.

                
> Port HADOOP-8175 (Add mkdir -p flag) to branch-1
> ------------------------------------------------
>
>                 Key: HADOOP-8873
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8873
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 1.2.0
>            Reporter: Eli Collins
>            Assignee: Akira AJISAKA
>              Labels: newbie
>         Attachments: HADOOP-8873-1.patch, HADOOP-8873-2.patch
>
>
> Per HADOOP-8551 let's port the mkdir -p option to branch-1 for a 1.x release 
> to help users transition to the new shell behavior. In Hadoop 2.x mkdir 
> currently requires the -p option to create parent directories but a program 
> that specifies it won't work on 1.x since it doesn't support this option.

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