Thanks for the pointer about JMX. I will definitely look into that. Bill
On Tue, Feb 10, 2009 at 8:51 PM, Brian Bockelman <[email protected]>wrote: > Hey Bill, > > Have you tried the Ganglia or JMX stats from your namenode? > > I.e., look here: > > > http://rcf.unl.edu/ganglia/?m=load_one&r=hour&s=descending&c=red-workers&h=hadoop-name&sh=1&hc=4&z=small > > The dfs.FSNamesystem.UnderReplicatedBlocks metric should keep track of what > you're looking for. You can query Ganglia or turn on JMX and use one of the > JMX/Nagios connectors. > > Brian > > > On Feb 10, 2009, at 5:05 PM, Bill Au wrote: > > I am in the process of setting up remote monitoring of my Hadoop cluster. >> I >> seems to me that the replication status can only be obtained from the >> command line by the fsck command. Has anyone though about adding >> replication status to the NameNode web UI in dfshealth.jsp? Or is that >> something that I really shouldn't worry about since Hadoop will fix things >> all by itself? >> >> Bill >> > >
