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https://issues.apache.org/jira/browse/HDFS-6847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-6847:
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Description:
This jira plans to add storage policy support on directory, i.e., users can
set/get storage policy for not only files but also directories.
We allow users to set storage policies for nested directories/files. For a
specific file/directory, its storage policy then should be its own storage
policy, if it is specified, or the storage policy specified on its nearest
ancestral directory. E.g., for a path /foo/bar/baz, if two different policies
are set on foo and bar (p1 for foo and p2 for bar), the storage policies for
baz, bar, and foo should be p2, p2, and p1, respectively.
> Archival Storage: Support storage policy on a directory
> -------------------------------------------------------
>
> Key: HDFS-6847
> URL: https://issues.apache.org/jira/browse/HDFS-6847
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer, namenode
> Reporter: Jing Zhao
> Assignee: Jing Zhao
>
> This jira plans to add storage policy support on directory, i.e., users can
> set/get storage policy for not only files but also directories.
> We allow users to set storage policies for nested directories/files. For a
> specific file/directory, its storage policy then should be its own storage
> policy, if it is specified, or the storage policy specified on its nearest
> ancestral directory. E.g., for a path /foo/bar/baz, if two different policies
> are set on foo and bar (p1 for foo and p2 for bar), the storage policies for
> baz, bar, and foo should be p2, p2, and p1, respectively.
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