Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10056#discussion_r46357421
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Column.scala ---
@@ -467,28 +467,55 @@ class Column(protected[sql] val expr: Expression)
extends Logging {
}
/**
+ * @group expr_ops
+ * @deprecated As of 1.6.0, replaced by `isnan`. This will be removed in
Spark 2.0.
+ */
+ @deprecated("Use isnan. This will be removed in Spark 2.0.", "1.6.0")
+ def isNaN: Column = isnan
+
+ /**
* True if the current expression is NaN.
*
* @group expr_ops
- * @since 1.5.0
+ * @since 1.6.0
*/
- def isNaN: Column = withExpr { IsNaN(expr) }
+ def isnan: Column = withExpr { IsNaN(expr) }
+
+ /**
+ * @group expr_ops
+ * @deprecated As of 1.6.0, replaced by `isnull`. This will be removed
in Spark 2.0.
+ */
+ def isNull: Column = isnull
/**
* True if the current expression is null.
*
* @group expr_ops
- * @since 1.3.0
+ * @since 1.6.0
*/
- def isNull: Column = withExpr { IsNull(expr) }
+ def isnull: Column = withExpr { IsNull(expr) }
--- End diff --
I left isnull unchanged in my earlier pull request because I felt it was
too commonly used, and decided not to change them.
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