diff --git a/sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala b/sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala
index eb8700369275..813cee3b2a56 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala
@@ -179,6 +179,7 @@ class DataFrame private[sql](
       row.toSeq.map { cell =>
         val str = cell match {
           case null => "null"
+          case binary: Array[Byte] => binary.map("%02X".format(_)).mkString("[", " ", "]")
           case array: Array[_] => array.mkString("[", ", ", "]")
           case seq: Seq[_] => seq.mkString("[", ", ", "]")
           case _ => cell.toString