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Posted to mapreduce-dev@hadoop.apache.org by "Arun C Murthy (Created) (JIRA)" <ji...@apache.org> on 2011/11/24 07:56:41 UTC

[jira] [Created] (MAPREDUCE-3469) Port to 0.22 - Implement limits on per-job JobConf, Counters, StatusReport, Split-Sizes

Port to 0.22 - Implement limits on per-job JobConf, Counters, StatusReport, Split-Sizes
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                 Key: MAPREDUCE-3469
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3469
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Mahadev konar
            Assignee: Mahadev konar
             Fix For: 0.20.203.0


We have come across issues in production clusters wherein users abuse counters, statusreport messages and split sizes. One such case was when one of the users had 100 million counters. This leads to jobtracker going out of memory and being unresponsive. In this jira I am proposing to put sane limits on the status report length, the number of counters and the size of block locations returned by the input split. 

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