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From Anfernee Xu <anfernee...@gmail.com>
Subject hdfs compatibility
Date Tue, 18 Feb 2014 23:00:51 GMT

I have an existing Hadoop cluster built from 0.21.0 release and have some
important data on HDFS, now I'm planning to move to the current GA
release(2.2.0), what's the procedure for the data migration(from 0.21.0
hdfs to 2,20 hdfs) if topology is not changed(all nodes are not changed)?
Can I simply copy all meta data files from 0.21.0(say
/hadoop_021/temp/hdfs/namenode/) to 2.2.0(say



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