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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-702) DFS Upgrade Proposal
Date Fri, 26 Mar 2010 01:42:27 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantin Shvachko updated HADOOP-702:
---------------------------------------

    Attachment: FSStateTransition7.htm

Attaching FSStateTransition7.htm, which contains new name-node recovery table, and explains
how {{saveNamespace()}} works.

> DFS Upgrade Proposal
> --------------------
>
>                 Key: HADOOP-702
>                 URL: https://issues.apache.org/jira/browse/HADOOP-702
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.13.0
>
>         Attachments: DFSUpgradeProposal3.html, FSStateTransition6.htm, FSStateTransition7.htm,
FSStateTransitionApr03.patch, Manual-TestCases-HdfsConversion.txt, TestPlan-HdfsUpgrade.html,
TestPlan-HdfsUpgrade.html, TestPlan-HdfsUpgrade.html
>
>
> Currently the DFS cluster upgrade procedure is manual.
> http://wiki.apache.org/lucene-hadoop/Hadoop_Upgrade
> It is rather complicated and does not guarantee data recoverability in case of software
errors or administrator mistakes.
> This is a description of utilities that make the upgrade process almost automatic and
minimize chance of loosing or corrupting data.
> Please see the attached html file for details.

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