Multi-GroupBy inserts with the same distinct expression should share the first
map-reduce job
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Key: HIVE-267
URL: https://issues.apache.org/jira/browse/HIVE-267
Project: Hadoop Hive
Issue Type: Improvement
Components: Query Processor
Affects Versions: 0.2.0
Reporter: Zheng Shao
Currently multi-GroupBy inserts was done in a way that each GroupBy is separate.
We should be able to optimize the plan.
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