I'm making my first steps mastering hadoop. I've setup a CDH4.5 in distributed mode (on two virtual machines). I'm having problems running MapReduce jobs with YARN. I could launch successfully a DistributedShell application (from CDH examples), but once I run a MapReduce job, it just hangs there forever.
This is what I'm trying to launch:
sudo -uhdfs yarn jar /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar pi 1 1
These are the last resource manager's log lines:
13/12/10 23:30:02 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1386714123362_0001
13/12/10 23:30:02 INFO client.YarnClientImpl: Submitted application application_1386714123362_0001 to ResourceManager at master/192.168.122.175:8032
13/12/10 23:30:02 INFO mapreduce.Job: The url to track the job: http://master:8088/proxy/application_1386714123362_0001/
13/12/10 23:30:02 INFO mapreduce.Job: Running job: job_1386714123362_0001
The node manager's log doesn't get any new messages once I run the job.
This is what I see on resource manager's web page regarding the job:
State - ACCEPTED
FinalStatus - UNDEFINED
Progress - (progress bar in 0%)
Tracking UI - UNASSIGNED
Apps Submitted - 1
Apps Pending - 1
Apps Running - 0