Problem: After adding another PC to use as a stand-alone JobTracker, I get the "cannot assign requested address" error in the JobTracker log on the master when running bin/start-all.sh
If I run the following on the new JobTracker machine: bin/start-mapred.sh Everything works great, except that also starts a task tracker instance and the JobTracker machine participates in reduces instead of just managing jobs. Did I misconfigure something? How do I prevent the JobTracker from running a TaskTracker from starting. Similarly, how do I fix the issue with the master failing to spawn a JobTracker instance on the new machine? Note: Also, I do realize that having a job tracker at this point is overkill, however, I'm just trying to emulate a working environment. My setup worked perfectly when I just had 4 TaskTrackers, and 1 NameNode (also running JobTracker). My setup: 4 TaskTracker / DateNodes 10.1.10.9 10.1.10.10 10.1.10.17 10.1.10.18 1 NameNode 10.1.10.1 1 JobTracker 10.1.10.2 Config: NameNode/mapred-site.xml: DataNodes/mapred-site.xml: mapred.job.tracker JOBTRACKER:54311 JobTracker/mapred-site.xml: mapred.job.tracker JOBTRACKER:54311 mapred.map.tasks 40 mapred.reduce.tasks 8 Details: When I run bin/start-all.sh from the master, my thought would have been that the Master would start everything in this order: Master starts - NameNode @ Master Master starts - 4 DataNodes Master starts - SecondaryNameNode @ Master Master starts - JobTracker @ new Job Tracker machine <----*********** Master starts - 4 TaskTrackers. However, what's actually happening is: Master starts - NameNode @ Master Master starts - 4 DataNodes Master starts - SecondaryNameNode @ Master Master tries to start JobTracker locally (it doesn't have a hostname preceding the command, thus my assumption that its starting it locally) <----*********** Master starts - 4 TaskTrackers. I can't figure out why in the world it didn't start the JobTracker on the new machine. -- View this message in context: http://hadoop-common.472056.n3.nabble.com/jobtracker-Cannot-assign-requested-address-tp1518660p2694562.html Sent from the Users mailing list archive at Nabble.com.
