Jesus Camacho Rodriguez created HIVE-22200:
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             Summary: Hash collision may cause column resolution to fail
                 Key: HIVE-22200
                 URL: https://issues.apache.org/jira/browse/HIVE-22200
             Project: Hive
          Issue Type: Bug
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


{{ExprNodeDescUtils.getExprNodeColumnDesc}} extracts the {{ExprNodeColumnDesc}} 
(column descriptors) from an expression. In fact, it creates a map from hash to 
the object itself. It same hash value is generated for two different objects, 
this will result in a clash in the map and some expressions not being part of 
its values.



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