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https://issues.apache.org/jira/browse/HIVE-8211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16551942#comment-16551942
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Matt McCline commented on HIVE-8211:
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Somewhere along the line TIMESTAMP aggregation was fixed.
> Tez and Vectorization of SUM(timestamp) not vectorized -- can't execute
> correctly because aggregation output is double
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-8211
> URL: https://issues.apache.org/jira/browse/HIVE-8211
> Project: Hive
> Issue Type: Bug
> Components: Tez, Vectorization
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Major
>
> Vectorization of SUM(timestamp) is currently turned off because the output of
> aggregation is a double (DoubleColumnVector) and the execution code is
> expecting a long (LongColumnVector).
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