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https://issues.apache.org/jira/browse/SPARK-54339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-54339.
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Fix Version/s: 4.1.0
Resolution: Fixed
Issue resolved by pull request 53044
[https://github.com/apache/spark/pull/53044]
> Functions in AttributeMap are non-deterministic
> -----------------------------------------------
>
> Key: SPARK-54339
> URL: https://issues.apache.org/jira/browse/SPARK-54339
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Andy Lam
> Assignee: Andy Lam
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.1.0
>
>
> The `scala2.13` implementation of {{{}+{}}}, {{{}updated{}}}, and {{removed}}
> in {{AttributeMap}} is buggy. It incorrectly converted the internal baseMap
> to a regular Map[Attribute, A] that hashes on Attribute objects directly.
> This causes non-determinism (potential correctness) issues caused by
> different Attribute subclass implementations having different hashCode
> behaviors (e.g., AttributeReference includes {{{}metadata{}}}, {{qualifier}}
> in its hash).
> The {{++}} implementation is correct.
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