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https://issues.apache.org/jira/browse/HIVE-26072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena reassigned HIVE-26072:
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Assignee: Ayush Saxena
> Enable vectorization for stats gathering (tablescan op)
> -------------------------------------------------------
>
> Key: HIVE-26072
> URL: https://issues.apache.org/jira/browse/HIVE-26072
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Rajesh Balamohan
> Assignee: Ayush Saxena
> Priority: Major
>
> https://issues.apache.org/jira/browse/HIVE-24510 enabled vectorization for
> compute_bit_vector.
> But tablescan operator for stats gathering is disabled by default.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/Vectorizer.java#L2577]
> Need to enable vectorization for this. This can significantly reduce runtimes
> for analyze statements for large tables.
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