Hi, in the slave - file too. /etc/hosts is also recommend to avoid DNS issues. After adding in slaves the new node has to be started and should quickly appear in the web-ui. If you don't need the nodes all time you can setup a exclude and refresh your cluster (http://wiki.apache.org/hadoop/FAQ#I_want_to_make_a_large_cluster_smaller_by_taking_out_a_bunch_of_nodes_simultaneously._How_can_this_be_done.3F)
- Alex On Sat, Dec 17, 2011 at 12:06 PM, madhu phatak <phatak....@gmail.com> wrote: > Hi, > I am trying to add nodes dynamically to a running hadoop cluster.I started > tasktracker and datanode in the node. It works fine. But when some node > try fetch values ( for reduce phase) it fails with unknown host exception. > When i add a node to running cluster do i have to add its hostname to all > nodes (slaves +master) /etc/hosts file? Or some other way is there? > > > -- > Join me at http://hadoopworkshop.eventbrite.com/ -- Alexander Lorenz http://mapredit.blogspot.com P Think of the environment: please don't print this email unless you really need to.
