cloud-fan commented on code in PR #47981:
URL: https://github.com/apache/spark/pull/47981#discussion_r1743835268
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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -3820,6 +3820,17 @@ object SQLConf {
.intConf
.createWithDefault(ByteArrayMethods.MAX_ROUNDED_ARRAY_LENGTH)
+ val ACCURATE_CASE_WHEN_NULLABILITY_CHECK =
+ buildConf("spark.sql.optimizer.accurateCaseWhenNullabilityCheck")
Review Comment:
a config is overkill IMO. Changing nullability from true to false is an
optimization and it happens in query optimizer as well.
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