zhengruifeng commented on code in PR #38956:
URL: https://github.com/apache/spark/pull/38956#discussion_r1047967339
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/conditionalExpressions.scala:
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@@ -386,10 +386,9 @@ object CaseWhen {
* position are branch values.
*/
def createFromParser(branches: Seq[Expression]): CaseWhen = {
- val cases = branches.grouped(2).flatMap {
- case cond :: value :: Nil => Some((cond, value))
- case value :: Nil => None
- }.toArray.toSeq // force materialization to make the seq serializable
+ val cases = branches.grouped(2).flatMap { g =>
Review Comment:
`createFromParser` was never used
make this change, since it causes `MatchError`
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