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https://issues.apache.org/jira/browse/HDFS-12911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331087#comment-16331087
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Uma Maheswara Rao G commented on HDFS-12911:
--------------------------------------------
Attached new patch with minor checkstyle warning corrections.
> [SPS]: Modularize the SPS code and expose necessary interfaces for
> external/internal implementations.
> -----------------------------------------------------------------------------------------------------
>
> Key: HDFS-12911
> URL: https://issues.apache.org/jira/browse/HDFS-12911
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Uma Maheswara Rao G
> Assignee: Uma Maheswara Rao G
> Priority: Major
> Attachments: HDFS-12911-HDFS-10285-01.patch,
> HDFS-12911-HDFS-10285-02.patch, HDFS-12911-HDFS-10285-03.patch,
> HDFS-12911-HDFS-10285-04.patch, HDFS-12911-HDFS-10285-05.patch,
> HDFS-12911.00.patch
>
>
> One of the key comment from the discussions was to modularize the SPS code,
> so we can easily plug in the external/internal implementations. This JIRA for
> doing the necessary refactoring.
> So other comments to handle
> Daryn:
> # Lock should not kept while executing placement policy.
> - handled by HDFS-12982
> # While starting up the NN, SPS Xattrs checks happen even if feature
> disabled. This could potentially impact the startup speed.
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