Once the nodes are listed as dead, if you still have the host names in your conf/exclude file, remove the entries and then run hadoop dfsadmin -refreshNodes.
This works for us on our cluster. -paul On Tue, Jan 27, 2009 at 5:08 PM, Bill Au <bill.w...@gmail.com> wrote: > I was able to decommission a datanode successfully without having to stop > my > cluster. But I noticed that after a node has been decommissioned, it shows > up as a dead node in the web base interface to the namenode (ie > dfshealth.jsp). My cluster is relatively small and losing a datanode will > have performance impact. So I have a need to monitor the health of my > cluster and take steps to revive any dead datanode in a timely fashion. So > is there any way to altogether "get rid of" any decommissioned datanode > from > the web interace of the namenode? Or is there a better way to monitor the > health of the cluster? > > Bill >
