Googling a bit there seems to be little difference between them ( seems just a matter of preference).  Phabrictor was created at Facebook and suspect the additional committers from FB to Hbase and as Hive started there led to them switching ( since I bet they don't want to context switch either).  

review board works well
 Joe Stein
 Founder, Principal Consultant
 Big Data Open Source Security LLC
 Twitter: @allthingshadoop
On Aug 19, 2013, at 4:46 PM, Jay Kreps <[EMAIL PROTECTED]> wrote:
NEW: Monitor These Apps!
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