use same mapper for mltiple directories
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Key: HIVE-824
URL: https://issues.apache.org/jira/browse/HIVE-824
Project: Hadoop Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Namit Jain
CombineHiveInputFormat will enable 1 mapper to read multiple files in the same
directory. It should be possible to extend it for multiple directories
(partitions of the same table),
when the operator tree for those partitions is the same.
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