Hadoop Fatigue -- Alternatives to Hadoop
http://www.bytemining.com/2011/08/hadoop-fatigue-alternatives-to-hadoop/
twister http://www.iterativemapreduce.org/userguide.html
haloop http://code.google.com/p/haloop/
http://dongxicheng.org/mapreduce/iterative-mapreduce-intro/

http://kb.cnblogs.com/page/94920/