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https://issues.apache.org/jira/browse/HIVE-21257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Teddy Choi resolved HIVE-21257.
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Resolution: Not A Problem
> Vectorized LENGTH UDF doesn't respect the max length of VARCHAR or CHAR in
> Hive 3+
> ----------------------------------------------------------------------------------
>
> Key: HIVE-21257
> URL: https://issues.apache.org/jira/browse/HIVE-21257
> Project: Hive
> Issue Type: Bug
> Affects Versions: 4.0.0, 3.1.1
> Reporter: Teddy Choi
> Assignee: Teddy Choi
> Priority: Major
>
> After HIVE-19951 is fixed, there still are some cases that vectorized length
> UDF doesn't respect the max length of VARCHAR or CHAR. StringLength has an
> internal bug. Moreover, it's hard to get input data type details in Hive 2,
> unlike Hive 3. So separate both implementation to keep code clean in Hive 3
> while the changes minimal in Hive 2.
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