Group-by to determine equals of Keys in reverse order
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Key: HIVE-1743
URL: https://issues.apache.org/jira/browse/HIVE-1743
Project: Hive
Issue Type: Improvement
Reporter: Siying Dong
Assignee: Siying Dong
Priority: Minor
When processing group-by, in reduce side, keys are ordered. Comparing equality
of two keys can be more efficient in reverse order.
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