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https://issues.apache.org/jira/browse/CALCITE-3403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jin xing reassigned CALCITE-3403:
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Assignee: jin xing
> WindowReduceExpressionsRule does not reuse RelMetadataQuery
> -----------------------------------------------------------
>
> Key: CALCITE-3403
> URL: https://issues.apache.org/jira/browse/CALCITE-3403
> Project: Calcite
> Issue Type: Improvement
> Reporter: Haisheng Yuan
> Assignee: jin xing
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> It creates a new RelMetadataQuery instance, which is a fresh RelMetadataQuery
> without any data cache. We should get RelMetadataQuery from RelOptRuleCall to
> reuse cache as much as possible.
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