[jira] [Commented] (HDFS-2832) Enable support for heterogeneous storages in HDFS

["Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-2832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739170#comment-13739170 ] 

Tsz Wo (Nicholas), SZE commented on HDFS-2832:
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Just have created a new branch: http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-2832/
                
> Enable support for heterogeneous storages in HDFS
> -------------------------------------------------
>
>                 Key: HDFS-2832
>                 URL: https://issues.apache.org/jira/browse/HDFS-2832
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 0.24.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>         Attachments: 20130813-HeterogeneousStorage.pdf
>
>
> HDFS currently supports configuration where storages are a list of directories. Typically each of these directories correspond to a volume with its own file system. All these directories are homogeneous and therefore identified as a single storage at the namenode. I propose, change to the current model where Datanode * is a * storage, to Datanode * is a collection * of strorages. 

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