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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7076) Persist Block Storage Policy in FSImage and Edit Log
Date Fri, 03 Oct 2014 20:33:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14158488#comment-14158488
] 

Tsz Wo Nicholas Sze commented on HDFS-7076:
-------------------------------------------

One quick comment: Let's rename addStoragePolicy to defineStoragePolicy.  It should support
- adding a new policy;
- overwriting an existing policy;
- deleting an existing policy (when the policy parameter is an empty policy).

> Persist Block Storage Policy in FSImage and Edit Log
> ----------------------------------------------------
>
>                 Key: HDFS-7076
>                 URL: https://issues.apache.org/jira/browse/HDFS-7076
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-7076.000.patch, HDFS-7076.001.patch, HDFS-7076.002.patch, HDFS-7076.003.patch,
editsStored
>
>
> Currently block storage policies are hard coded.  This JIRA is to persist the policies
in FSImage and Edit Log in order to support adding new policies or modifying existing policies.



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