Hi Try formating the new datanode and then run the hadoop-daemon.sh.
With Regards, RJ On Wed, Feb 16, 2011 at 3:50 PM, Jameson Li <hovlj...@gmail.com> wrote: > Hi, > > My new adding datanodes are working well. > > But I just use start-dfs.sh in the namenode and hadoop-daemons.sh start > datanode in the namenode can start the new adding datanode, I can't use > hadoop-daemon.sh start datanode in the new adding datanode to start itself, > and when I do that it will return a null pointer exception. > > I have read the mail-archives "New Datanode won't start, null pointer > exception" reported by Scott, and the url is: > http://www.mail-archive.com/hdfs-user@hadoop.apache.org/msg00271.html > > But there has not have a really result. Scott at last just said:"A > stop-all/*start*-all on the cluster got it to *start*." > > Thanks, > Jameson. >
