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Posted to hdfs-issues@hadoop.apache.org by "Arpit Agarwal (JIRA)" <ji...@apache.org> on 2014/02/24 22:53:59 UTC

[jira] [Updated] (HDFS-2832) Enable support for heterogeneous storages in HDFS - DN as a collection of storages

     [ https://issues.apache.org/jira/browse/HDFS-2832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arpit Agarwal updated HDFS-2832:
--------------------------------

    Summary: Enable support for heterogeneous storages in HDFS - DN as a collection of storages  (was: Enable support for heterogeneous storages in HDFS)

> Enable support for heterogeneous storages in HDFS - DN as a collection of storages
> ----------------------------------------------------------------------------------
>
>                 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
>             Fix For: 3.0.0, 2.3.0
>
>         Attachments: 20130813-HeterogeneousStorage.pdf, 20131125-HeterogeneousStorage-TestPlan.pdf, 20131125-HeterogeneousStorage.pdf, 20131202-HeterogeneousStorage-TestPlan.pdf, 20131203-HeterogeneousStorage-TestPlan.pdf, H2832_20131107.patch, editsStored, editsStored, h2832_20131023.patch, h2832_20131023b.patch, h2832_20131025.patch, h2832_20131028.patch, h2832_20131028b.patch, h2832_20131029.patch, h2832_20131103.patch, h2832_20131104.patch, h2832_20131105.patch, h2832_20131107b.patch, h2832_20131108.patch, h2832_20131110.patch, h2832_20131110b.patch, h2832_20131111.patch, h2832_20131112.patch, h2832_20131112b.patch, h2832_20131114.patch, h2832_20131118.patch, h2832_20131119.patch, h2832_20131119b.patch, h2832_20131121.patch, h2832_20131122.patch, h2832_20131122b.patch, h2832_20131123.patch, h2832_20131124.patch, h2832_20131202.patch, h2832_20131203.patch, h2832_20131210.patch, h2832_20131211.patch, h2832_20131211b.patch, h2832_branch-2_20131226.patch, h2832_branch-2_20140103.patch
>
>
> 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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