FileSinkOperator should remove duplicated files from the same task based on
file sizes
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Key: HIVE-1492
URL: https://issues.apache.org/jira/browse/HIVE-1492
Project: Hadoop Hive
Issue Type: Bug
Reporter: Ning Zhang
FileSinkOperator.jobClose() calls Utilities.removeTempOrDuplicateFiles() to
retain only one file for each task. A task could produce multiple files due to
failed attempts or speculative runs. The largest file should be retained rather
than the first file for each task.
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