If you are interested in Hadoop or Mapreduce, I would like to recommend participating or submitting your paper to the First International Workshop on Theory and Practice of Mapreduce (MAPRED’2010) (held in correspondance with the 2nd IEEE International Conference on Cloud Computing Technology and Science).
(I just joined the workshop as a program committee member)
Best regards,
Amund Tveit (co-founder of Atbrox)