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From "Mr.J" <tjst...@kgrid.co.kr>
Subject How to rolling upgrade??
Date Tue, 03 Feb 2015 09:38:46 GMT
my cluster A, and cluster B. To upgrade to version 2.6
In what order should I upgrade? 
Journalnode 1 &gt;&gt; Journalnode 2 &gt; Journalnode 3 &gt;&gt; Namenode
Std &gt;&gt; Namenode Act &gt;&gt; Datanode   ??
Do I also need to upgrade the zookeeper? 
 
hadoop-2.4.1 :  JournalNode, Namenode, Datanode
zookeeper-3.4.6 : zookeeper
 
http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/HdfsRollingUpgrade.html

 
 
 
 
 

 
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