Optimize Key Comparison in GroupByOperator
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Key: HIVE-1738
URL: https://issues.apache.org/jira/browse/HIVE-1738
Project: Hive
Issue Type: Improvement
Reporter: Siying Dong
Assignee: Siying Dong
GroupByOperator uses ObjectInspectorUtils.compare() to compare keys, which is
written for generalized object comparisons, which is not optimized for group-by
operator. By optimizing this logic, we expect to see obvious improvements in
GroupByOperator.
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