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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11848) Enhance dfsadmin listOpenFiles command to list files under a given path
Date Sat, 06 Jan 2018 03:01:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Yiqun Lin updated HDFS-11848:
    Attachment: HDFS-11848.004.patch

Attach v04 patch, only change is using {{openFilesMap}} to replace {{openFiles1}}.
Will commit this once Jenkins is okay.

> Enhance dfsadmin listOpenFiles command to list files under a given path
> -----------------------------------------------------------------------
>                 Key: HDFS-11848
>                 URL: https://issues.apache.org/jira/browse/HDFS-11848
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Manoj Govindassamy
>            Assignee: Yiqun Lin
>         Attachments: HDFS-11848.001.patch, HDFS-11848.002.patch, HDFS-11848.003.patch,
> HDFS-10480 adds {{listOpenFiles}} option is to {{dfsadmin}} command to list all the open
files in the system.
> One more thing that would be nice here is to filter the output on a passed path or DataNode.
Usecases: An admin might already know a stale file by path (perhaps from fsck's -openforwrite),
and wants to figure out who the lease holder is. Proposal here is add suboptions to {{listOpenFiles}}
to list files filtered by path.
> {{LeaseManager#getINodeWithLeases(INodeDirectory)}} can be used to get the open file
list for any given ancestor directory.

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