Replace the JobConf.setNumOfMapTasks with FileInputFormat.setMapInputSize(long)
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Key: HADOOP-1451
URL: https://issues.apache.org/jira/browse/HADOOP-1451
Project: Hadoop
Issue Type: Improvement
Components: mapred
Affects Versions: 0.12.3
Reporter: Owen O'Malley
Fix For: 0.14.0
It is confusing to users to set the number of mappers and have the system
override it. It would be far less confusing to remove JobConf.setNumMapTasks
and FileInputFormat.setMinSplitSize and have a single
FileInputFormat.setMapInputSize(long) and simplify the logic around it.
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