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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9517) Document Hadoop Compatibility
Date Mon, 17 Jun 2013 01:34:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13684891#comment-13684891
] 

Karthik Kambatla commented on HADOOP-9517:
------------------------------------------

Thanks for chipping in, [~acmurthy]. The additions make sense to me. +1 to the v5 patch.

Thoughts on binary compatibility: 
# Given that it is hard to guarantee source API compatibility in Java (to the extent that
JDK itself doesn't), I wasn't sure if we should separately call out binary compatibility.

# However, I really like the way ABI is described in the latest patch. It mentions all of
API, wire and semantic compatibilities, and focuses on the practical implications for end-users.
Thanks for including this.

                
> Document Hadoop Compatibility
> -----------------------------
>
>                 Key: HADOOP-9517
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9517
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Arun C Murthy
>            Assignee: Karthik Kambatla
>            Priority: Blocker
>         Attachments: hadoop-9517.patch, hadoop-9517.patch, hadoop-9517.patch, hadoop-9517.patch,
hadoop-9517-proposal-v1.patch, hadoop-9517-proposal-v1.patch, hadoop-9517-v2.patch, hadoop-9517-v3.patch,
hadoop-9517-v4.patch, hadoop-9517-v4-v5-diff.patch, hadoop-9517-v5.patch
>
>
> As we get ready to call hadoop-2 stable we need to better define 'Hadoop Compatibility'.
> http://wiki.apache.org/hadoop/Compatibility is a start, let's document requirements clearly
and completely.

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