Summary

Description

The code that runs in the child task process.

Issues: Unresolved

Key Summary Due Date
Bug MAPREDUCE-6214 MultipleOutputs output folders are not deleted when a task fails
Bug MAPREDUCE-956 Shuffle should be broken down to only two phases (copy/reduce) instead of three (copy/sort/reduce)
Improvement MAPREDUCE-1046 Remove mapred.{map|reduce}.child.ulimit and use mapred.job.{map|reduce}.memory.mb as the task's ulimit value

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Issues: Updated recently

Key Summary Updated
Bug MAPREDUCE-21 NegativeArraySizeException in reducer with new api
Improvement MAPREDUCE-6721 mapreduce.reduce.shuffle.memory.limit.percent=0.0 should be legal to enforce shuffle to disk
Bug MAPREDUCE-6068 Illegal progress value warnings in map tasks

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Versions: Unreleased

Name Release date
Unreleased 0.20.204.0
Unreleased MR-3902  
Unreleased MR-2454  
Unreleased 1.3.0  
Unreleased 2.4.0
Unreleased fs-encryption  
Unreleased 2.8.0  
Unreleased YARN-2928  
Unreleased 2.7.3  
Unreleased 2.9.0  
Unreleased 2.6.5  
Unreleased 2.7.4  
Unreleased 3.0.0-alpha1  
Unreleased MAPREDUCE-6608  
Unreleased 3.0.0-alpha2  

...and 10 more

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