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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12911) [SPS]: Modularize the SPS code and expose necessary interfaces for external/internal implementations.
Date Fri, 12 Jan 2018 18:38:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uma Maheswara Rao G updated HDFS-12911:
---------------------------------------
    Description: 
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. 



  was:
One of the key comment from the discussions was to modularize the SPS code, so we can easily
plug in the external/internal implementations.

So other comments to handle
Daryn:
 # Lock should not kept while executing placement policy. 
 - already handled by 
 # While starting up the NN, SPS Xattrs checks happen even if feature disabled. This could
potentially impact the startup speed. 




> [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: Rakesh R
>         Attachments: HDFS-12911-HDFS-10285-01.patch, HDFS-12911-HDFS-10285-02.patch,
HDFS-12911-HDFS-10285-03.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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