|| at Sep 28, 2011 at 5:08 pm
This (slaves) is a configuration parameter (look at
bin/hadoop-config.sh) which is set once you start mapreduce cluster
(execute "start-mapred.sh"). You can change the slaves by executing
"stop-mapred.sh", changing the slaves file and running
"start-mapred.sh" between the jobs. You can also stop/start new slaves
(task trackers) between the jobs using parameters
"mapred.hosts.exclude" and "mapred.hosts" (I think hadoop tutorial
provides help on that) but all these methods require you to restart
On Tue, Sep 27, 2011 at 11:50 AM, bikash sharma wrote:
Hi -- Can we specify a different set of slaves for each mapreduce job run.
I tried using the --config option and specify different set of slaves in
slaves config file. However, it does not use the selective slaves set but
the one initially configured.