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From "Eli Collins (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3137) Bump LAST_UPGRADABLE_LAYOUT_VERSION
Date Fri, 30 Mar 2012 00:21:26 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HDFS-3137:
------------------------------

          Resolution: Fixed
       Fix Version/s: 2.0.0
    Target Version/s:   (was: 2.0.0)
        Release Note: Upgrade from Hadoop versions earlier than 0.18 is not supported as of
2.0. To upgrade from an earlier release, first upgrade to 0.18, and then upgrade again from
there.
        Hadoop Flags: Incompatible change,Reviewed  (was: Reviewed)
              Status: Resolved  (was: Patch Available)

I've committed this and merged to branch-2. Thanks for the review Nicholas. 
                
> Bump LAST_UPGRADABLE_LAYOUT_VERSION
> -----------------------------------
>
>                 Key: HDFS-3137
>                 URL: https://issues.apache.org/jira/browse/HDFS-3137
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 2.0.0
>
>         Attachments: hdfs-3137.txt, hdfs-3137.txt, hdfs-3137.txt
>
>
> LAST_UPGRADABLE_LAYOUT_VERSION is currently -7, which corresponds to Hadoop 0.14. How
about we bump it to -16, which corresponds to Hadoop 0.18?
> I don't think many people are using releases older than v0.18, and those who are probably
want to upgrade to the latest stable release (v1.0). To upgrade to eg 0.23 they can still
upgrade to v1.0 first and then upgrade again from there.

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