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From "Manoj Govindassamy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11847) Enhance dfsadmin listOpenFiles command to list files blocking datanode decommissioning
Date Fri, 12 Jan 2018 21:25:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Manoj Govindassamy updated HDFS-11847:
--------------------------------------
    Fix Version/s: 3.0.1

> Enhance dfsadmin listOpenFiles command to list files blocking datanode decommissioning
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-11847
>                 URL: https://issues.apache.org/jira/browse/HDFS-11847
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Manoj Govindassamy
>            Assignee: Manoj Govindassamy
>             Fix For: 3.1.0, 3.0.1
>
>         Attachments: HDFS-11847.01.patch, HDFS-11847.02.patch, HDFS-11847.03.patch, HDFS-11847.04.patch,
HDFS-11847.05.patch
>
>
> HDFS-10480 adds {{listOpenFiles}} option is to {{dfsadmin}} command to list all the open
files in the system.
> Additionally, it would be very useful to only list open files that are blocking the DataNode
decommissioning. With thousand+ node clusters, where there might be machines added and removed
regularly for maintenance, any option to monitor and debug decommissioning status is very
helpful. Proposal here is to add suboptions to {{listOpenFiles}} for the above case.



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