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https://issues.apache.org/jira/browse/FLINK-41436?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arvid Heise resolved FLINK-41436.
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Fix Version/s: 2.4.0
Resolution: Fixed
Merged into master as e47e2a9.
> Planning time grows exponentially with the depth of nested catalog views
> because CatalogManager re-parses unresolved views on every lookup
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-41436
> URL: https://issues.apache.org/jira/browse/FLINK-41436
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 2.3.0
> Reporter: Arvid Heise
> Assignee: Arvid Heise
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.4.0
>
>
> since FLINK-37098 (https://issues.apache.org/jira/browse/FLINK-37098) "Can
> not select time attribute from a view", resolveCatalogView parses and
> converts the view body on every lookup. Calcite looks up each identifier more
> than once, and each nested view is resolved the same way, so cost compounds
> per level. Catalogs that store ResolvedCatalogView are not affected; every
> catalog that rebuilds views from stored text is.
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