One more, I wonder that the more map task, the more faster on any condition.
/Edward On Tue, Dec 2, 2008 at 2:32 PM, Andrew Purtell <[EMAIL PROTECTED]> wrote: > Hello Jonathan, > > +1 on sharing your Nagios plugins for Hadoop and HBase as a > contrib. :-) > > - Andy > > >> From: Jonathan Gray <[EMAIL PROTECTED]> >> Subject: RE: Bulk import question. >> To: [email protected] >> Date: Monday, December 1, 2008, 7:20 PM >> >> Your new best friends: Ganglia and Nagios >> >> Ganglia is great for monitoring cluster-wide resource usage >> over time. You'll see memory, cpu, disk, network usage >> over time for entire cluster and for each node. It is very >> easy to setup because it uses UDP broadcast so no need to >> actually configure nodes in conf files. HBase 0.19 >> introduces ganglia metrics which will also be available in >> the ganglia web interface. >> >> http://ganglia.info/ >> >> Nagios is good for monitoring services as well as resource >> utilization. Rather than give data over time, it's aim >> is really to alert you when something is wrong. For >> example, when a server is no longer reachable or when >> available disk space reaches a configurable threshold. It >> does require a bit more work to get up and running because >> you have to setup your node and service configurations. I >> have written custom nagios plugins for hadoop and hbase, if >> there's interest I will look at cleaning them up and >> contrib'ing them. >> >> http://www.nagios.org/ >> >> Both are free and essential tools for properly monitoring >> your cluster. >> >> JG > > > > > -- Best Regards, Edward J. Yoon @ NHN, corp. [EMAIL PROTECTED] http://blog.udanax.org
