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https://issues.apache.org/jira/browse/ORC-378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16514428#comment-16514428
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Matt McCline commented on ORC-378:
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Well, in *"*theory*"* Hive vectorized expressions should be handling isRepeated
with value only in element 0 correctly. Especially after epic HIVE-18622:
"Vectorization: IF Statements, Comparisons, and more do not handle NULLs
correctly".
I *practice* I'm still finding isRepeating bugs with the new random data +
exercise all batch variants Unit Tests I've been adding. I just committed
HIVE-19565 which fixed 2 isRepeating bugs in String functions (SUBSTR and
CONCAT).
So, if you enable full isRepeating detection in ORC, you'll likely uncover more
bugs for me to fix!.
> translate ShortRepeat/Delta integer encoding into isRepeating on LongCV more
> directly
> -------------------------------------------------------------------------------------
>
> Key: ORC-378
> URL: https://issues.apache.org/jira/browse/ORC-378
> Project: ORC
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Major
>
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