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https://issues.apache.org/jira/browse/HDFS-5194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13892677#comment-13892677
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Milind Bhandarkar commented on HDFS-5194:
-----------------------------------------
This is an excellent proposal, and the right direction for HDFS. Over the last
couple of years, interest in Hadoop ecosystem has brought many storage system
vendors to decide among the various options, as to how they can integrate
better with Hadoop. I have personally participated in two such projects, which
have taken two completely different approaches: 1. HDFS Wire-protocol
compatibility (where the external distributed file system appears to be HDFS)
and 2. HDFS API compatibility, which implements the FileSystem API.
This proposal takes the third route, which in my opinion is a better route,
since it reduces the overhead of keeping external storage systems integrated
with HDFS, in spite of rapidly evolving protocols / APIs, by reusing most of
the plumbing of HDFS.
+1 on this Jira.
> Robust support for alternate FsDatasetSpi implementations
> ---------------------------------------------------------
>
> Key: HDFS-5194
> URL: https://issues.apache.org/jira/browse/HDFS-5194
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, hdfs-client
> Reporter: David Powell
> Priority: Minor
> Attachments: HDFS-5194.design.01222014.pdf,
> HDFS-5194.design.09112013.pdf, HDFS-5194.patch.09112013
>
>
> The existing FsDatasetSpi interface is well-positioned to permit extending
> Hadoop to run natively on non-traditional storage architectures. Before this
> can be done, however, a number of gaps need to be addressed. This JIRA
> documents those gaps, suggests some solutions, and puts forth a sample
> implementation of some of the key changes needed.
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