Anton Lykov created SPARK-56444:
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Summary: BatchScanExec equals/hashCode contract violations
Key: SPARK-56444
URL: https://issues.apache.org/jira/browse/SPARK-56444
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 4.0.0
Reporter: Anton Lykov
BatchScanExec.equals() violates reflexivity when batch is null (which happens
after serialization round-trip since scan is @transient) — x.equals(x) returns
false. Additionally, hashCode() does not include keyGroupedPartitioning despite
equals() comparing it, violating the equals/hashCode contract.
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