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
 http://www.stealth.ly
 Twitter: @allthingshadoop
********************************************/
On Aug 19, 2013, at 4:46 PM, Jay Kreps <[EMAIL PROTECTED]> wrote:
 
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB