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https://issues.apache.org/jira/browse/HDFS-12742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16303610#comment-16303610
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Shashikant Banerjee commented on HDFS-12742:
--------------------------------------------
[~cheersyang], i think the better approach here would be to iterate through all
the keys and build the container list in KSM and send container deletion
request to SCM to delete the containers specific to the particular KSM instance
directly at SCM instead of sending key deletion request. What do you think?
Sorry for revisiting this issue after quite a while.
> 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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