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From "Kevin Burton" <rkevinbur...@charter.net>
Subject RE: Permission problem
Date Tue, 30 Apr 2013 13:31:17 GMT
That is what I perceive as the problem. The hdfs file system was created
with the user 'hdfs' owning the root ('/') but for some reason with a M/R
job the user 'mapred' needs to have write permission to the root. I don't
know how to satisfy both conditions. That is one reason that I relaxed the
permission to 775 so that the group would also have write permission but
that didn't seem to help.

 

From: Mohammad Tariq [mailto:dontariq@gmail.com] 
Sent: Tuesday, April 30, 2013 8:20 AM
To: Kevin Burton
Subject: Re: Permission problem

 

user?"ls" shows "hdfs" and the log says "mapred"..




Warm Regards,

Tariq

https://mtariq.jux.com/

cloudfront.blogspot.com

 

On Tue, Apr 30, 2013 at 6:22 PM, Kevin Burton <rkevinburton@charter.net>
wrote:

I have relaxed it even further so now it is 775

 

kevin@devUbuntu05:/var/log/hadoop-0.20-mapreduce$ hadoop fs -ls -d /

Found 1 items

drwxrwxr-x   - hdfs supergroup          0 2013-04-29 15:43 /

 

But I still get this error:

 

2013-04-30 07:43:02,520 FATAL org.apache.hadoop.mapred.JobTracker:
org.apache.hadoop.security.AccessControlException: Permission denied:
user=mapred, access=WRITE, inode="/":hdfs:supergroup:drwxrwxr-x

 

 

From: Mohammad Tariq [mailto:dontariq@gmail.com] 
Sent: Monday, April 29, 2013 5:10 PM
To: user@hadoop.apache.org
Subject: Re: Incompartible cluserIDS

 

make it 755.




Warm Regards,

Tariq

https://mtariq.jux.com/

cloudfront.blogspot.com

 

 

 


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