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From "Mahadev konar (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1943) Implement limits on per-job JobConf, Counters, StatusReport, Split-Sizes
Date Sun, 05 Sep 2010 06:33:33 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mahadev konar updated MAPREDUCE-1943:
-------------------------------------

    Attachment: MAPREDUCE-1943-yahoo-hadoop-0.20S-fix.patch

the fix addendum with a test case. 

I will be uploading a single patch for trunk soon.



> Implement limits on per-job JobConf, Counters, StatusReport, Split-Sizes
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1943
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1943
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Mahadev konar
>            Assignee: Mahadev konar
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1943-0.20-yahoo.patch, MAPREDUCE-1943-0.20-yahoo.patch,
MAPREDUCE-1943-yahoo-hadoop-0.20S-fix.patch, MAPREDUCE-1943-yahoo-hadoop-0.20S-fix.patch,
MAPREDUCE-1943-yahoo-hadoop-0.20S.patch
>
>
> 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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