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https://issues.apache.org/jira/browse/HIVE-19493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt McCline updated HIVE-19493:
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    Comment: was deleted

(was: I'm creating a new TestVectorDateAddSub UT that generates random 
data/NULLs and batches with specific isRepeating patterns.  When I run it 
without your patch I see failures which is encouraging.  It is based on changes 
in HIVE-19384 which Teddy is code reading, so I need to get that one in first.)

> VectorUDFDateDiffColCol copySelected does not handle nulls correctly
> --------------------------------------------------------------------
>
>                 Key: HIVE-19493
>                 URL: https://issues.apache.org/jira/browse/HIVE-19493
>             Project: Hive
>          Issue Type: Bug
>          Components: Vectorization
>            Reporter: Vihang Karajgaonkar
>            Assignee: Vihang Karajgaonkar
>            Priority: Major
>         Attachments: HIVE-19493.01.patch, HIVE-19493.02.patch
>
>
> The {{copySelected}} method in {{VectorUDFDateDiffColCol}} class was missed 
> during HIVE-18622



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