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https://issues.apache.org/jira/browse/HIVE-18622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16353098#comment-16353098
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Vihang Karajgaonkar commented on HIVE-18622:
--------------------------------------------
Thanks [~mmccline] for reporting and providing the patch. Looks like this
affects Hive 2.x as well. Is that right? What is the implication of this bug?
> Vectorization: IF Statements, Comparisons, and more do not handle NULLs
> correctly
> ---------------------------------------------------------------------------------
>
> Key: HIVE-18622
> URL: https://issues.apache.org/jira/browse/HIVE-18622
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Fix For: 3.0.0
>
> Attachments: HIVE-18622.01.patch, HIVE-18622.02.patch
>
>
>
> Many vector expression classes are missing guards around setting noNulls
> among other things.
> {code:java}
> // Carefully update noNulls...
> if (outputColVector.noNulls) {
> outputColVector.noNulls = inputColVector.noNulls;
> }
> {code}
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