srowen commented on a change in pull request #26826:
[SPARK-30195][SQL][CORE][ML] Change some function, import definitions to work
with stricter compiler in Scala 2.13
URL: https://github.com/apache/spark/pull/26826#discussion_r355827106
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/expressions/Window.scala
##########
@@ -19,7 +19,7 @@ package org.apache.spark.sql.expressions
import org.apache.spark.annotation.Stable
import org.apache.spark.sql.Column
-import org.apache.spark.sql.catalyst.expressions._
+import org.apache.spark.sql.catalyst.expressions.{WindowSpec => _, _}
Review comment:
I think this was an error, sort of; the wildcard import shadowed the
package's WindowSpec, which seems to be what's intended. The resolution worked
incorrectly in 2.13 as a result.
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