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https://issues.apache.org/jira/browse/HDFS-5194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13872613#comment-13872613
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David Powell commented on HDFS-5194:
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Hi Arpit,
Thanks for taking a look. I'll try to work a requirements section into the
next version of the doc. For the time being, I'd summarize the key
FsDatasetSpi requirements as:
- Support for non-File access (versatility)
- Support for implementations outside the org.apache.hadoop package
(modularity, cleanliness)
- Support for short circuit (performance)
- Testing to ensure the above requirements continue to be met
> 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.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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