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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12235) Ozone: DeleteKey-3: KSM SCM block deletion message and ACK interactions
Date Fri, 01 Sep 2017 21:09:01 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151156#comment-16151156
] 

Anu Engineer commented on HDFS-12235:
-------------------------------------

[~cheersyang] I will take a look next week, but if your testing is done feel free to commit.
[~vagarychen] or [~xyao] will be able to comment before me. If I have any comments we can
always file follow up JIRAs. [~cheersyang] and [~yuanbo] Thanks for getting this critical
piece of ozone work done.

> Ozone: DeleteKey-3: KSM SCM block deletion message and ACK interactions
> -----------------------------------------------------------------------
>
>                 Key: HDFS-12235
>                 URL: https://issues.apache.org/jira/browse/HDFS-12235
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>         Attachments: HDFS-12235-HDFS-7240.001.patch, HDFS-12235-HDFS-7240.002.patch,
HDFS-12235-HDFS-7240.003.patch, HDFS-12235-HDFS-7240.004.patch, HDFS-12235-HDFS-7240.005.patch
>
>
> KSM and SCM interaction for delete key operation, both KSM and SCM stores key state info
in a backlog, KSM needs to scan this log and send block-deletion command to SCM, once SCM
is fully aware of the message, KSM removes the key completely from namespace. See more from
the design doc under HDFS-11922, this is task break down 2.



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