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https://issues.apache.org/jira/browse/HADOOP-5073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12746744#action_12746744
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Sanjay Radia commented on HADOOP-5073:
--------------------------------------

Doug said:
>The implication on documentation should be something like:
>    * Public/stable should be documented.
>    * Public/evolving should documented, but must be well-marked as evolving.
>    * Private, limited or otherwise, should not be included in public 
> documentation, but only in internal documents.

Agreed, However private/stable and private/evolving also need to be document 
even though they 
are not visible in the public documentation, only in the developer 
documentation.
Developers need to understand which private/internal interfaces are stable 
since their stability needs to be maintained across releases, For example the 
client protocols need to be stable even though they are
private for wire compatibility.


> Hadoop 1.0 Interface Classification - scope (visibility - public/private) and 
> stability
> ---------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5073
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5073
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Sanjay Radia
>            Assignee: Sanjay Radia
>         Attachments: 5073_demo.png, HADOOP-5073.patch
>
>
> This jira proposes an interface classification for hadoop interfaces.
> The discussion was started in email alias core-...@hadoop.apache.org in Nov 
> 2008.

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