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https://issues.apache.org/jira/browse/HDFS-7584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14290903#comment-14290903
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Zhe Zhang commented on HDFS-7584:
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[~xyao] Will the legacy quota become deprecated after this change? If so we
should mention it in the documentation. Otherwise we should also add some
guideline on how to set both legacy and type-aware quotas. The above example,
where the supposedly overall quora is smaller than aggregate type quotas, isn't
so easy to understand.
Otherwise the patch looks good to me. Thanks again for the good work!
> Enable Quota Support for Storage Types (SSD)
> ---------------------------------------------
>
> Key: HDFS-7584
> URL: https://issues.apache.org/jira/browse/HDFS-7584
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: datanode, namenode
> Reporter: Xiaoyu Yao
> Assignee: Xiaoyu Yao
> Attachments: HDFS-7584 Quota by Storage Type - 01202015.pdf,
> HDFS-7584.0.patch, HDFS-7584.1.patch, HDFS-7584.2.patch, HDFS-7584.3.patch,
> HDFS-7584.4.patch, editsStored
>
>
> Phase II of the Heterogeneous storage features have completed by HDFS-6584.
> This JIRA is opened to enable Quota support of different storage types in
> terms of storage space usage. This is more important for certain storage
> types such as SSD as it is precious and more performant.
> As described in the design doc of HDFS-5682, we plan to add new
> quotaByStorageType command and new name node RPC protocol for it. The quota
> by storage type feature is applied to HDFS directory level similar to
> traditional HDFS space quota.
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