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https://issues.apache.org/jira/browse/CALCITE-4551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17435652#comment-17435652
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Jesus Camacho Rodriguez commented on CALCITE-4551:
--------------------------------------------------
Fixed in
[2c17f7a|https://github.com/apache/calcite/commit/2c17f7afec58b79f5e715cae5b43f9ca8da39cf4].
> Fly Weight for MD Cache Keys
> ----------------------------
>
> Key: CALCITE-4551
> URL: https://issues.apache.org/jira/browse/CALCITE-4551
> Project: Calcite
> Issue Type: Improvement
> Reporter: James Starr
> Assignee: James Starr
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Create cache keys for metadata calls generates a fair bit of object turn in
> trivial cases, more expensive than the actual metadata call. Many metadata
> calls could reuse their cache keys since the are functionally identical.
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