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https://issues.apache.org/jira/browse/HADOOP-12374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14744751#comment-14744751
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Weiwei Yang commented on HADOOP-12374:
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Is there anybody who can help to commit this? 

> Description of hdfs expunge command is confusing
> ------------------------------------------------
>
>                 Key: HADOOP-12374
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12374
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: documentation, trash
>    Affects Versions: 2.7.0, 2.7.1
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>              Labels: docuentation, newbie, suggestions, trash
>         Attachments: HADOOP-12374.001.patch, HADOOP-12374.002.patch, 
> HADOOP-12374.003.patch, HADOOP-12374.004.patch
>
>
> Usage: hadoop fs -expunge
> Empty the Trash. Refer to the HDFS Architecture Guide for more information on 
> the Trash feature.
> this description is confusing. It gives user the impression that this command 
> will empty trash, but actually it only removes old checkpoints. If user sets 
> a pretty long value for fs.trash.interval, this command will not remove 
> anything until checkpoints exist longer than this value.



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