Looking at Cloudera's installation instructions, I don't see any mention of how to run jobs as regular users.
When I try to run a sample job, this is what I get:
hadoop jar /usr/lib/hadoop/hadoop-*-examples.jar pi 2 100000 Number of Maps = 2 Samples per Map = 100000 Wrote input for Map #0 Wrote input for Map #1 Starting Job org.apache.hadoop.security.AccessControlException: org.apache.hadoop.security.AccessControlException: Permission denied: user=myuser, access=WRITE, inode="/":hdfs:supergroup:drwxr-xr-x
One solution would be to set perms of "/" to allow writing by all users.
Another solution I'm seeing online is to set a property
mapreduce.jobtracker.staging.root.dir but I'm not sure where that is set at:
I'm guessing there is a standard way this is handled (i.e. not all users running hadoop jobs have root access, nor is leaving permissions of HDFS root wide-open standard as well)
Edit: still stuck on this, but I reposted question to Cloudera's mailing list.. hopefully someone there or here will reply :) thanks!