I have heard about Hadoop few months back... but it is here for quite a few years now. It was being used by large internet companies like Google and Facebook so far... but its coming to enterprises now. Here is the link to read something on it. Just a brief snapshot you can say:
http://www.forbes.com/sites/netapp/2012/09/24/hadoop-big-data/
For my current client we are implementing BizTalk. I was suppose to design a solution which will receive message from Oracle AQ, transform it and send it to destination in MSMQ. Flow is pretty simple. I had to track the message in Audit database during execution. I designed it as always, I used long running transaction for orchestration and scope. Put all processing within scope except message receive. Exception was handled in exception block. Audit record if created would be compensated in database. ......