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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: 20130813-HeterogeneousStorage.pdf
Here is a design doc for this feature.
We will be creating a new HDFS-2832 branch for this work. We plan to split the
feature into more sub-tasks and work on it in two phases:
# Heterogeneous storage support in HDFS
# APIs to expose support to applications
Any feedback on the document is welcome. We can schedule a meeting to have a
discussion on the feature some time in late August or early September
depending on the interest.
> 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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