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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14066) VersionInfo should be marked as public API
Date Mon, 10 Apr 2017 18:47:41 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15963328#comment-15963328
] 

Andrew Wang commented on HADOOP-14066:
--------------------------------------

Should this also go into 2.9/2.8/2.7, since the point of this API is doing cross-version shims?

> VersionInfo should be marked as public API
> ------------------------------------------
>
>                 Key: HADOOP-14066
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14066
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: common
>            Reporter: Thejas M Nair
>            Assignee: Akira Ajisaka
>            Priority: Critical
>             Fix For: 3.0.0-alpha3
>
>         Attachments: HADOOP-14066.01.patch
>
>
> org.apache.hadoop.util.VersionInfo is commonly used by applications that work with multiple
versions of Hadoop.
> In case of Hive, this is used in a shims layer to identify the version of hadoop and
use different shim code based on version (and the corresponding api it supports).
> I checked Pig and Hbase as well and they also use this class to get version information.
> However, this method is annotated as "@private" and "@unstable".
> This code has actually been stable for long time and is widely used like a public api.
I think we should mark it as such.
> Note that there are apis to find the version of server components in hadoop, however,
this class necessary for finding the version of client.



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