diff --git a/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaRelation.scala b/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaRelation.scala
index 97bd2831693237995aaa822c7b3698af9fe11db7..7103709969c18437c7deb2fa94490ab2e11b3373 100644
--- a/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaRelation.scala
+++ b/external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaRelation.scala
@@ -143,4 +143,7 @@ private[kafka010] class KafkaRelation(
         validateTopicPartitions(partitions, partitionOffsets)
     }
   }
+
+  override def toString: String =
+    s"KafkaRelation(strategy=$strategy, start=$startingOffsets, end=$endingOffsets)"
 }