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https://issues.apache.org/jira/browse/HIVE-27238?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HIVE-27238:
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Labels: pull-request-available (was: )
> Avoid Calcite Code generation for RelMetaDataProvider on every query
> --------------------------------------------------------------------
>
> Key: HIVE-27238
> URL: https://issues.apache.org/jira/browse/HIVE-27238
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Reporter: Steve Carlin
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In CalcitePlanner, we are instantiating a new CachingRelMetadataProvider on
> every query. Within the Calcite code, they keep the provider key to prevent
> a new MetadataHandler class from being created. But by generating a new
> provider, the cache never gets a hit so we keep instantiating new
> MetadataHandlers.
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