Reuse of Writable objects is improperly handled by MRUnit
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Key: MAPREDUCE-680
URL: https://issues.apache.org/jira/browse/MAPREDUCE-680
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: Aaron Kimball
Assignee: Aaron Kimball
Attachments: MAPREDUCE-680.patch
As written, MRUnit's MockOutputCollector simply stores references to the
objects passed in to its collect() method. Thus if the same Text (or other
Writable) object is reused as an output containiner multiple times with
different values, these separate values will not all be collected.
MockOutputCollector needs to properly use io.serializations to deep copy the
objects sent in.
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