[jira] Created: (HIVE-548) Code cleanup: refactor the 4 methods like SemanticAnalyzer.genGroupByPlanGroupByOperator

["Zheng Shao (JIRA)" <ji...@apache.org>]

Code cleanup: refactor the 4 methods like SemanticAnalyzer.genGroupByPlanGroupByOperator
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                 Key: HIVE-548
                 URL: https://issues.apache.org/jira/browse/HIVE-548
             Project: Hadoop Hive
          Issue Type: Improvement
            Reporter: Zheng Shao


We have 4 methods to generate the GroupByOperators in the SemanticAnalyzer:

{code}
  SemanticAnalyzer.genGroupByPlanGroupByOperator
  SemanticAnalyzer.genGroupByPlanMapGroupByOperator
  SemanticAnalyzer.genGroupByPlanGroupByOperator1
  SemanticAnalyzer.genGroupByPlanGroupByOperator2
{code}

While they are all different, a substantial portion of them are the same. We should factor out all the common functionality into shared functions.

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