Vineet Garg created HIVE-18246:
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             Summary: Replace toString with getExprString in 
AbstractOperatorDesc::getColumnExprMapForExplain
                 Key: HIVE-18246
                 URL: https://issues.apache.org/jira/browse/HIVE-18246
             Project: Hive
          Issue Type: Improvement
            Reporter: Vineet Garg
            Assignee: Vineet Garg


AbstractOperatorDesc::getColumnExprMapForExplain uses toString on ExprNode to 
get the string representation of an expr. getExprString is better suited here 
since each ExprNode class has suitable implementation for this.



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