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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (MAPREDUCE-1228) OutOfMemoryErrors in ReducerTask due to int overflow on >2G RAM tasks
Date Sat, 21 Nov 2009 00:33:39 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved MAPREDUCE-1228.
------------------------------------

    Resolution: Duplicate

Oops, yep, that's it, sorry I missed it. Closing dup.

> OutOfMemoryErrors in ReducerTask due to int overflow on >2G RAM tasks
> ---------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1228
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1228
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: task
>    Affects Versions: 0.20.1
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>
> The ReduceTask RAMManager uses ints for tracking amounts of memory. For tasks with >2G
RAM allocated, these can overflow and cause memory usage to become incorrectly tracked and
run away.

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