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Date: Tue, 26 Feb 2013 15:33:15 +0800
From: Yusup Ashrap <aphawk@gmail.com>
To: user@hbase.apache.org
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Subject: Updating from 0.90.2 to 0.94
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hi all, 
I am updating production cluster from 0.90.2 to 0.94 .  My table's size is about 20TB+ .
Scheduled update includes upgrading both hbase,hadoop version,
 and I am also changing user with which I  start up both hadoop and hbase cluster  from user "A" to user "B".

It's production environment , so I wanted know what steps I should not miss regarding this upgrade.
Table is kinda big and I don't have backup cluster to backup my data. 
I wanted to know will there be a data loss scenario if I rollback after having failed to upgrade. thanks.


-- 
Best Regards
Yusup Ashrap


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