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https://issues.apache.org/jira/browse/HIVE-19565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16513385#comment-16513385
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Matt McCline commented on HIVE-19565:
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Committed to master. [~teddy.choi] thank you for your review!
> Vectorization: Fix NULL / Wrong Results issues in STRING Functions
> ------------------------------------------------------------------
>
> Key: HIVE-19565
> URL: https://issues.apache.org/jira/browse/HIVE-19565
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Fix For: 4.0.0
>
> Attachments: HIVE-19565.01-branch-3.patch, HIVE-19565.01.patch
>
>
> Write new UT tests that use random data and intentional isRepeating batches
> to checks for NULL and Wrong Results for vectorized STRING functions:
> * char_length
> * concat
> * initcap
> * length
> * lower
> * ltrim
> * octet_length
> * rtrim
> * trim
> * upper
> * UDF:
> ** hex
> ** substr
> BUGs found in LTRIM, CONCAT, and SUBSTR.
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