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https://issues.apache.org/jira/browse/HDFS-10480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16015321#comment-16015321
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Manoj Govindassamy commented on HDFS-10480:
-------------------------------------------

Thanks for the suggestion [~linyiqun]. Totally agree, above said enhancements 
will make the command much more useful. In fact, I have already started working 
on the first one which is to list the files blocking decommissioning nodes. 
Will file a jira for the same soon. The other one to list open files under a 
given path is also very useful. I too believe that these enhancements are 
better to go in new jiras. Will file these jiras soon and you can take a look. 
Thanks for the help.

> Add an admin command to list currently open files
> -------------------------------------------------
>
>                 Key: HDFS-10480
>                 URL: https://issues.apache.org/jira/browse/HDFS-10480
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Kihwal Lee
>            Assignee: Manoj Govindassamy
>         Attachments: HDFS-10480.02.patch, HDFS-10480-trunk-1.patch, 
> HDFS-10480-trunk.patch
>
>
> Currently there is no easy way to obtain the list of active leases or files 
> being written. It will be nice if we have an admin command to list open files 
> and their lease holders.



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