Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4767#discussion_r25405083
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala ---
@@ -293,9 +294,15 @@ class DataFrame protected[sql](
* 1983 03 0.410516 0.442194
* 1984 04 0.450090 0.483521
* }}}
+ * @param numRows Number of rows to show
* @group basic
*/
- def show(): Unit = println(showString())
+ def show(numRows: Int = 20): Unit = println(showString(numRows))
+
+ /**
+ * Displays the [[DataFrame]] in a tabular form. (For Java compatibility)
+ */
+ def show(): Unit = println(showString(20))
--- End diff --
i.e don't include "for java compatibility" in the user facing doc, and
don't include the default param value.
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