OutOfMemoryErrors in ReducerTask due to int overflow on >2G RAM tasks
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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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