diff --git a/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala b/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala
index 528cd40dc0..eb1cad0188 100644
--- a/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala
+++ b/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala
@@ -478,6 +478,7 @@ trait SharedSQLContext
       }
 
       conf.set("spark.tispark.telemetry.enable", "false")
+      conf.set("spark.sql.debug.maxToStringFields", "100")
     }
 
   private class TiContextCache {