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JobTracker: User limit exceeded

Question asked by orenlederman on Oct 31, 2011
Latest reply on Nov 22, 2011 by orenlederman

A few days ago jobs stopped running, and we got an error that we have never seen before:

2011-10-27 12:46:35,517 INFO org.apache.hadoop.mapred.JobTracker: User limit exceeded. Marking job: job_201110161003_1759 for retire

Do you know what causes this problem? We had to restart the JobTracker several times until it was resolved.

I tried looking for this problem on Google but could hardly find any info. It appears that this specific piece of code is not part of the official Hadoop distribution, but it is part of the Cloudera distribution. Is MapR built on top of Cloudera distribution?