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From "Shashikant Banerjee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12742) Add support for KSM --expunge command
Date Mon, 30 Oct 2017 12:13:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16224800#comment-16224800
] 

Shashikant Banerjee commented on HDFS-12742:
--------------------------------------------

Hi [~cheersyang],

The idea here is to have an admin purge tool and I agree that its a better approach to directly
read KSM/SCM/Container metadata directly and directly delete all the data  and the associated
metadata instead of going through object deletion in ozone. I will work on the same approach.
Thanks for the review comments.

> Add support for KSM --expunge command
> -------------------------------------
>
>                 Key: HDFS-12742
>                 URL: https://issues.apache.org/jira/browse/HDFS-12742
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-7240
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>             Fix For: HDFS-7240
>
>         Attachments: HDFS-12742-HDFS-7240.001.patch, HDFS-12742-HDFS-7240.002.patch
>
>
> KSM --expunge will delete all the data from the data nodes for all the keys in the KSM
db. 
> User will have no control over the deletion.



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