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From "Eric Hanson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4592) ColumnArithmeticColumn.txt template never sets output isNull to true; can give wrong results
Date Thu, 23 May 2013 01:17:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13664761#comment-13664761
] 

Eric Hanson commented on HIVE-4592:
-----------------------------------

Found some other issues in null propagation as well.
                
> ColumnArithmeticColumn.txt template never sets output isNull to true; can give wrong
results
> --------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4592
>                 URL: https://issues.apache.org/jira/browse/HIVE-4592
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: vectorization-branch
>            Reporter: Eric Hanson
>            Assignee: Eric Hanson
>             Fix For: vectorization-branch
>
>
> ColumnArithmeticColumn.txt should set the output column's noNulls flag to true if neither
input column has nulls, but it does not do that. This can lead to wrong results is the noNulls
was set to false in a previous use of the batch.

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