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https://issues.apache.org/jira/browse/HADOOP-6253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13707765#comment-13707765
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Steve Loughran commented on HADOOP-6253:
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Noah, I've been doing work in HADOOP-9361 both with trying to specify more
rigorously what HDFS does (and hence what other filesystems need to do), and
doing some more contract-driven testing. It'd be great if you could help w/
spec and see how the tests work.
One thing that we may want to think about is adding some declarations of
different filesystems into {{core-default.xml}}, but with a config option to
provide a URL to include in any diagnostics message if the FS class doesn't
load, e.g. {{"ClassNotFoundException: failed to load ceph://fs/file -please see
http://ceph.com/docs/wip-hadoop-doc/cephfs/hadoop/ }} for help.
I've opened a JIRA on that, HADOOP-9727.
> Add a Ceph FileSystem interface.
> --------------------------------
>
> Key: HADOOP-6253
> URL: https://issues.apache.org/jira/browse/HADOOP-6253
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs
> Reporter: Gregory Farnum
> Assignee: Gregory Farnum
> Priority: Minor
> Labels: ceph
> Attachments: HADOOP-6253.patch, HADOOP-6253.patch, HADOOP-6253.patch,
> HADOOP-6253.patch, HADOOP-6253.patch
>
>
> The experimental distributed filesystem Ceph does not have a single point of
> failure, uses a distributed metadata cluster instead of a single in-memory
> server, and might be of use to some Hadoop users.
> http://ceph.com/docs/wip-hadoop-doc/cephfs/hadoop/
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