cloud-fan commented on a change in pull request #27778: [SPARK-31027] [SQL]
Refactor DataSourceStrategy to be more extendable
URL: https://github.com/apache/spark/pull/27778#discussion_r387509437
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala
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@@ -635,3 +641,16 @@ object DataSourceStrategy {
}
}
}
+
+/**
+ * Find the column name of an expression that can be pushed down.
+ */
+private[sql] object PushableColumn {
Review comment:
execution package is private. We can remove `private[sql]` completely.
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