Make Hash aggregation threshold configurable
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Key: HIVE-561
URL: https://issues.apache.org/jira/browse/HIVE-561
Project: Hadoop Hive
Issue Type: Improvement
Affects Versions: 0.3.0, 0.3.1
Reporter: Zheng Shao
Assignee: Zheng Shao
Priority: Minor
Fix For: 0.4.0
Currently we stop doing Hash aggregation after seeing 100K rows and the
reduction is below 50%. We should make it configurable.
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