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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9517) Document Hadoop Compatibility
Date Tue, 04 Jun 2013 22:51:26 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthik Kambatla updated HADOOP-9517:
-------------------------------------

    Attachment: hadoop-9517-v2.patch

Updated the patch to:
# differentiate between the kinds of file formats
# list the kinds of HDFS metadata upgrades
# include the policy proposal for proto files

The policies being proposed (from comments in the JIRA) are explicitly labelled (Proposal)

At this point, it would be great to make sure the document
# captures all the items that affect compatibility
# the policies for the not-newly-proposed ones are accurate
# the newly proposed policies are reasonable
# improve the presentation, if need be

Once done with the above, it might be a good idea to get this in and address items with no
policies in subsequent JIRAs or sub-tasks to make sure we discuss them in isolation and detail.
Thoughts? 
                
> 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
>         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
>
>
> 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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