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https://issues.apache.org/jira/browse/SPARK-40315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-40315.
---------------------------------
Fix Version/s: 3.3.1
3.1.4
3.2.3
3.4.0
Resolution: Fixed
Issue resolved by pull request 37807
[https://github.com/apache/spark/pull/37807]
> Non-deterministic hashCode() calculations for ArrayBasedMapData on equal
> objects
> --------------------------------------------------------------------------------
>
> Key: SPARK-40315
> URL: https://issues.apache.org/jira/browse/SPARK-40315
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.2.2
> Reporter: Carmen Kwan
> Priority: Major
> Fix For: 3.3.1, 3.1.4, 3.2.3, 3.4.0
>
>
> There is no explicit `hashCode()` function override for the
> `ArrayBasedMapData` LogicalPlan. As a result, the `hashCode()` computed for
> `ArrayBasedMapData` can be different for two equal objects (objects with
> equal keys and values).
> This error is non-deterministic and hard to reproduce, as we don't control
> the default `hashCode()` function.
> We should override the `hashCode` function so that it works exactly as we
> expect. We should also have an explicit `equals()` function for consistency
> with how `Literals` check for equality of `ArrayBasedMapData`.
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