[
https://issues.apache.org/jira/browse/HDFS-2832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13751064#comment-13751064
]
Arpit Agarwal commented on HDFS-2832:
-------------------------------------
Hi [~djp], thanks for looking at the doc.
{quote}
My additional comments is: we should consider the case that remote storage that
fall into the same failure group. i.e. Storage Volumes of Node A, Node B is on
NAS-a, so only 1 replica should be placed on these two nodes although they may
on different racks.
{quote}
We have not considered this use case. Are you running multiple DataNodes over
the same NAS for redundancy?
Please feel free to file a Jira with your feature idea and motivation and we
can discuss how to proceed after we have initial level of support for
Heterogeneous Storages. Sound good?
> 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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
