Making distributed cache getters in JobContext never return null
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Key: MAPREDUCE-990
URL: https://issues.apache.org/jira/browse/MAPREDUCE-990
Project: Hadoop Map/Reduce
Issue Type: Improvement
Reporter: Philip Zeyliger
Assignee: Philip Zeyliger
Priority: Minor
MAPREDUCE-898 moved distributed cache setters and getters into Job and
JobContext. Since the API is new, I'd like to propose that those getters never
return null, but instead always return an array, even if it's empty.
If people don't like this change, I can instead merely update the javadoc to
reflect the fact that null may be returned.
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