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https://issues.apache.org/jira/browse/HIVE-12809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-12809:
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Description: Coalesce can skip processing other columns, if all the input
columns are non-null. (was: Coalesce can skip processing a column, if all the
input columns are non-null.)
> Vectorization: fast-path for coalesce if input.noNulls = true
> -------------------------------------------------------------
>
> Key: HIVE-12809
> URL: https://issues.apache.org/jira/browse/HIVE-12809
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Gopal V
>
> Coalesce can skip processing other columns, if all the input columns are
> non-null.
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