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https://issues.apache.org/jira/browse/CALCITE-7806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7806:
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Labels: pull-request-available (was: )
> Avoid resolving generated CAST calls during ARRAY validation
> ------------------------------------------------------------
>
> Key: CALCITE-7806
> URL: https://issues.apache.org/jira/browse/CALCITE-7806
> Project: Calcite
> Issue Type: Sub-task
> Reporter: Frank Chen
> Priority: Major
> Labels: pull-request-available
>
> Large string ARRAY validation creates generated CAST calls for operands whose
> inferred type differs from the common element type. These calls already use
> the built-in CAST operator, but the normal validation path resolves the
> operator again by name for every operand.
> Validate each generated CAST directly through its existing operator before
> replacing the operand. This preserves operand checks and validated-node type
> registration while avoiding repeated function lookup.
> The isolated Druid benchmark reduced allocation by 19.95% at 100,000 string
> literals and 20.48% at 1,000,000 string literals.
> Pull request: [PR #5280|https://github.com/apache/calcite/pull/5280]
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