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https://issues.apache.org/jira/browse/HADOOP-10506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13970033#comment-13970033
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Tsz Wo Nicholas Sze commented on HADOOP-10506:
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I did not say that LimitedPrivate could not have backwards compatibility. I
just say that LimitedPrivate APIs could also be @Stable, @Evolving or @Unstable.
> LimitedPrivate annotation not useful
> ------------------------------------
>
> Key: HADOOP-10506
> URL: https://issues.apache.org/jira/browse/HADOOP-10506
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.4.0
> Reporter: Thomas Graves
>
> The LimitedPrivate annotation isn't useful. The intention seems to have been
> those interfaces were only intended to be used by these components. But in
> many cases those components are separate from core hadoop. This means any
> changes to them will break backwards compatibility with those, which breaks
> the new compatibility rules in Hadoop.
> Note that many of the annotation are also not marked properly, or have fallen
> out of date. I see Public Interfaces that use LimitedPrivate classes in the
> api. (TokenCache using Credentials is an example).
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