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MapReduce, mail # user - Migrate from 1.0 to 1.1

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Migrate from 1.0 to 1.1
Jean-Marc Spaggiari 2013-04-12, 19:23

I'm currently running my cluster under hadoop 1.0.3 and I'm looking to
upgrate it to 1.1.2 (or 1.1.3 if coming soon).

Is there any specific documentation I should follow? So far I found this
one: http://wiki.apache.org/hadoop/Hadoop_Upgrade

Downtime is not an issue for me.