TaskRunner should log its activities
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Key: MAPREDUCE-3334
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3334
Project: Hadoop Map/Reduce
Issue Type: Improvement
Affects Versions: 0.20.2
Reporter: Allen Wittenauer
Priority: Minor
TaskRunner has little to no information that it logs, making it impossible to
debug when something goes wrong.
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