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https://issues.apache.org/jira/browse/HIVE-22200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-22200:
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    Attachment: HIVE-22200.patch

> 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
>            Priority: Critical
>         Attachments: HIVE-22200.patch, HIVE-22200.patch, HIVE-22200.patch
>
>
> {{ExprNodeDescUtils.getExprNodeColumnDesc}} extracts the 
> {{ExprNodeColumnDesc}} (column descriptors) from an expression. In fact, it 
> creates a map from hash to the object itself. If 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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