MAPREDUCE framework should issue warning with too many locations for a split
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Key: MAPREDUCE-801
URL: https://issues.apache.org/jira/browse/MAPREDUCE-801
Project: Hadoop Map/Reduce
Issue Type: New Feature
Reporter: Hong Tang
Customized input-format may be buggy and report misleading locations through
input-split, an example of which is PIG-878. When an input split returns too
many locations, it would not only artificially inflate the percentage of data
local or rack local maps, but also force scheduler to use more memory and work
harder to conduct task assignment.
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