Ruifeng Zheng created SPARK-60384:
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             Summary: Check Spark binary compatibility against 4.2.0
                 Key: SPARK-60384
                 URL: https://issues.apache.org/jira/browse/SPARK-60384
             Project: Spark
          Issue Type: Bug
          Components: Build
    Affects Versions: 5.0.0
            Reporter: Ruifeng Zheng


Spark binary-compatibility checks still use Spark 4.0.0 as their previous 
artifact version. APIs introduced in Spark 4.1 and 4.2 are therefore not 
comprehensively checked against their released signatures.

Update MimaBuild.previousSparkVersion to 4.2.0. The GenerateMIMAIgnore class 
finder also explicitly requests ASM8, which cannot visit the 
PermittedSubclasses attribute on the sealed interfaces present in Spark 4.2.0. 
Switch it to ASM9 so the exclusion scan can consume the updated baseline.

Validate the configured MiMa projects against the 4.2.0 artifacts. This change 
updates the configured baseline; it does not claim that all binary 
compatibility concerns are covered or remove existing exclusions. Backport to 
branch-4.x and branch-4.3.




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