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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8345) Storage policy APIs must be exposed via the FileSystem interface
Date Fri, 15 May 2015 21:54:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546233#comment-14546233
] 

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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