Hey Scott, Hadoop tends to get confused by nodes with multiple hostnames or multiple IP addresses. Is this your case?
I can't remember precisely what our admin does, but I think he puts in the IP address which Hadoop listens on in the exclude-hosts file. Look in the output of hadoop dfsadmin -report to determine precisely which IP address your datanode is listening on. Brian On May 17, 2010, at 11:32 PM, Scott White wrote: > 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
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