Rack level copy of map outputs
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Key: HADOOP-2729
URL: https://issues.apache.org/jira/browse/HADOOP-2729
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Amar Kamat
In case of maps taking of lot of time to complete, a rack level copy of the map
output can be maintained so that incase of master node for that map goes down
the other copy can be served. This will be useful since re-executing the map
can be time consuming and rack-level copy is much cheaper than network-level
copy.
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