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https://issues.apache.org/jira/browse/SPARK-59091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Holden Karau updated SPARK-59091:
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Component/s: SQL
> Emit the NaN guard only when both equality operands can be NaN
> --------------------------------------------------------------
>
> Key: SPARK-59091
> URL: https://issues.apache.org/jira/browse/SPARK-59091
> Project: Spark
> Issue Type: Sub-task
> Components: PySpark, SQL
> Affects Versions: 4.3.0
> Reporter: Holden Karau
> Assignee: Jing Zhan
> Priority: Minor
> Labels: pull-request-available
>
> `_nan_guard` emits `isnan(l) | isnan(r)` unless **both** operands are
> provably integral. For an
> unannotated `lambda a, b: a == b` over BIGINT columns the category is plain
> `"numeric"`, so the
> guard is emitted as `isnan(cast(bigint as double))` — provably dead, and the
> optimizer does not
> fold it. Costs roughly 8 plan nodes and per-row work.
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