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https://issues.apache.org/jira/browse/HDFS-8345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546233#comment-14546233
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Sean Busbey commented on HDFS-8345:
-----------------------------------
{quote}
bq. Can you point me to the exposure? BlockStoragePolicy is IA.Private, and I
would expect we can use covariant return types to make a source-compatible
update.
It was tagged IA.Private but returned via a LimitedPrivate interface,
unfortunate as that is. Changing the name, package or public interface of
BlockStoragePolicy would technically be incompatible. However if you suggest a
better name for the new interface I'd be happy to change it.
{quote}
Which LimitedPrivate though? I'd like to make sure we can't do the change in a
compatible way.
> 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,
> HDFS-8345.03.patch, HDFS-8345.04.patch, HDFS-8345.05.patch,
> HDFS-8345.06.patch, HDFS-8345.07.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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