We basically have a batch application which needs to be able to pump through 2 billion records and apply a relatively small ruleset(say a couple hundred rules). My thought is to look at doing something with Drools and Hadoop but I am wondering if anyone else has done a large dataset such as this(I have watched the video on large data drools and it has some good ideas but I am wondering if there is any other experiences). -- View this message in context: http://drools.46999.n3.nabble.com/Drools-and-Hadoop-tp4023329.html Sent from the Drools: User forum mailing list archive at Nabble.com.