I followed the steps mentioned here: http://developer.yahoo.com/hadoop/tutorial/module2.html#decommission to decommission a data node. What I see from the namenode is the hostname of the machine that I decommissioned shows up in both the list of dead nodes but also live nodes where its admin status is marked as 'In Service'. It's been twelve hours and there is no sign in the namenode logs that the node has been decommissioned. Any suggestions of what might be the problem and what to try to ensure that this node gets safely taken down?
thanks in advance, Scott
