Mahout classifier on Hadoop

[Lingxiang Cheng]

Hi,
 
    I am a newbie to Mahout. When I was reading the book "Mahout in Action", I 
found chapters talking about how clustering naturally fit into Map/Reduce 
framework, but I did not see the same claim for classifiers. Does it involve a 
lot of work to make classifiers like random forest work with Hadoop?
 
Thanks!
Lingxiang Cheng