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https://issues.apache.org/jira/browse/HDFS-13239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16397273#comment-16397273
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Xiao Chen commented on HDFS-13239:
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+1, committing this

> Fix non-empty dir warning message when setting default EC policy
> ----------------------------------------------------------------
>
>                 Key: HDFS-13239
>                 URL: https://issues.apache.org/jira/browse/HDFS-13239
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Hanisha Koneru
>            Assignee: Bharat Viswanadham
>            Priority: Minor
>         Attachments: HDFS-13239.00.patch, HDFS-13239.01.patch, 
> HDFS-13239.02.patch, HDFS-13239.03.patch, HDFS-13239.04.patch
>
>
> When EC policy is set on a non-empty directory, the following warning message 
> is given:
> {code}
> $hdfs ec -setPolicy -policy RS-6-3-1024k -path /ec1
> Warning: setting erasure coding policy on a non-empty directory will not 
> automatically convert existing files to RS-6-3-1024k
> {code}
> When we do not specify the -policy parameter when setting EC policy on a 
> directory, it takes the default EC policy. Setting default EC policy in this 
> way on a non-empty directory gives the following warning message:
> {code}
> $hdfs ec -setPolicy -path /ec2
> Warning: setting erasure coding policy on a non-empty directory will not 
> automatically convert existing files to null
> {code}
> Notice that the warning message in the 2nd case has the ecPolicy name shown 
> as null. We should instead give the default EC policy name in this message.



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