[ https://issues.apache.org/jira/browse/HIVE-24221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HIVE-24221:
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Labels: pull-request-available (was: )
> Use vectorizable expression to combine multiple columns in semijoin bloom filters
> ---------------------------------------------------------------------------------
>
> Key: HIVE-24221
> URL: https://issues.apache.org/jira/browse/HIVE-24221
> Project: Hive
> Issue Type: Improvement
> Components: Query Planning
> Environment:
> Reporter: Stamatis Zampetakis
> Assignee: Stamatis Zampetakis
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently, multi-column semijoin reducers use an n-ary call to GenericUDFMurmurHash to
combine multiple values into one, which is used as an entry to the bloom filter. However,
there are no vectorized operators that treat n-ary inputs. The same goes for the vectorized
implementation of GenericUDFMurmurHash introduced in HIVE-23976.
> The goal of this issue is to choose an alternative way to combine multiple values into
one to pass in the bloom filter comprising only vectorized operators.
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