[jira] [Comment Edited] (HIVE-21431) Vectorization: ltrim throws ArrayIndexOutOfBounds in corner cases

["Rajesh Balamohan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-21431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16800660#comment-16800660 ] 

Rajesh Balamohan edited comment on HIVE-21431 at 3/25/19 1:14 PM:
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This may be reproducible with regex expressions. But with the following, i see wrong results as well.
{noformat}
e.g 

WHEN x like '%radio%' THEN 'radio' 
WHEN x like '%tv%' THEN 'tv'
{noformat}


was (Author: rajesh.balamohan):
This should be reproducible with regex expressions.
{noformat}
e.g 

WHEN x like '%radio%' THEN 'radio' 
WHEN x like '%tv%' THEN 'tv'
{noformat}

> Vectorization: ltrim throws ArrayIndexOutOfBounds in corner cases
> -----------------------------------------------------------------
>
>                 Key: HIVE-21431
>                 URL: https://issues.apache.org/jira/browse/HIVE-21431
>             Project: Hive
>          Issue Type: Bug
>          Components: Vectorization
>    Affects Versions: 2.3.4
>            Reporter: Rajesh Balamohan
>            Assignee: Laszlo Bodor
>            Priority: Major
>
> In corner cases, {{ltrim}} with string columns throws arraryindexoutofboundsexception with vectorization enabled. {{HIVE-19565}} seem to fix corner cases.  But in another corner case, {{length[]}} was all {{0}} and this causes {{-1}} to be returned in the length to be set in the target vector. I will check if i can get a easier repro for this.



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