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https://issues.apache.org/jira/browse/HDFS-8345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14542305#comment-14542305
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Jing Zhao commented on HDFS-8345:
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Looks like most of the public functions in {{BlockStoragePolicy}} are
generically choosing {{StorageType}} for replicas, and replication is a general
concept and is already included in {{FileStatus}}. If you think some functions
should be internal to HDFS, maybe we can also have a new subclass/wrapper of
BlockStoragePolicy in HDFS?
> Storage policy APIs must be exposed via the FileSystem interface
> ----------------------------------------------------------------
>
> Key: HDFS-8345
> URL: https://issues.apache.org/jira/browse/HDFS-8345
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.7.0
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Labels: BB2015-05-TBR
> Attachments: HDFS-8345.01.patch, HDFS-8345.02.patch
>
>
> The storage policy APIs are not exposed via FileSystem. Since
> DistributedFileSystem is tagged as LimitedPrivate we should expose the APIs
> through FileSystem for use by other applications.
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