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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-3925) Configuration paramater to set the maximum number of mappers/reducers for a job
Date Thu, 20 Nov 2008 08:00:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amareshwari Sriramadasu resolved HADOOP-3925.
---------------------------------------------

    Resolution: Duplicate

Fixed by HADOOP-4018

> Configuration paramater to set the maximum number of mappers/reducers for a job
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-3925
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3925
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: dhruba borthakur
>
> The JobTracker can be prone to a denial-of-service attack if a user submits a job that
has a very large number of tasks. This has happened once in our cluster. It would be nice
to have a configuration setting that limits the maximum tasks that a single job can have.


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