ueshin commented on code in PR #50531:
URL: https://github.com/apache/spark/pull/50531#discussion_r2032146333
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sql/core/src/main/scala/org/apache/spark/sql/execution/python/MapInBatchEvaluatorFactory.scala:
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@@ -75,6 +77,12 @@ class MapInBatchEvaluatorFactory(
val unsafeProj = UnsafeProjection.create(output, output)
columnarBatchIter.flatMap { batch =>
+ // Ensure the schema matches the expected schema
+ val actualSchema = batch.column(0).dataType()
+ if (!outputSchema.sameType(actualSchema)) { // Ignore nullability
mismatch for now
Review Comment:
ah, but if this doesn't ignore nullability, it could introduce a breaking
change?
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