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https://issues.apache.org/jira/browse/HIVE-23843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajesh Balamohan reassigned HIVE-23843:
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Assignee: Rajesh Balamohan
> Improve key evictions in VectorGroupByOperator
> ----------------------------------------------
>
> Key: HIVE-23843
> URL: https://issues.apache.org/jira/browse/HIVE-23843
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Major
>
> Keys in {{mapKeysAggregationBuffers}} are evicted in random order. Tasks also
> get into GC issues when multiple keys are involved in groupbys. It would be
> good to provide an option to have LRU based eviction for
> mapKeysAggregationBuffers.
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