viirya commented on a change in pull request #33958:
URL: https://github.com/apache/spark/pull/33958#discussion_r708848430
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -1861,6 +1861,13 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val COLLAPSE_PROJECT_ALWAYS_INLINE =
buildConf("spark.sql.optimizer.collapseProjectAlwaysInline")
+ .doc("Whether to always collapse two adjacent projections and inline
expressions even if " +
+ "it causes extra duplication.")
+ .version("3.3.0")
+ .booleanConf
+ .createWithDefault(false)
Review comment:
Previous behavior is `true`, right? Is it good for changing behavior?
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