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https://issues.apache.org/jira/browse/HDFS-2832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HDFS-2832:
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Attachment: h2832_20131203.patch
Updated merge patch to resolve recent conflicts in trunk.
> 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,
> 20131125-HeterogeneousStorage-TestPlan.pdf,
> 20131125-HeterogeneousStorage.pdf,
> 20131202-HeterogeneousStorage-TestPlan.pdf,
> 20131203-HeterogeneousStorage-TestPlan.pdf, H2832_20131107.patch,
> 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
>
>
> 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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