Set DriverSuite log level to WARN

core/src/test/scala/spark/DriverSuite.scala

@@ -2,6 +2,9 @@ package spark
 
 import java.io.File
 
+import org.apache.log4j.Logger
+import org.apache.log4j.Level
+
 import org.scalatest.FunSuite
 import org.scalatest.concurrent.Timeouts
 import org.scalatest.prop.TableDrivenPropertyChecks._
@@ -27,6 +30,7 @@ class DriverSuite extends FunSuite with Timeouts {
  */
 object DriverWithoutCleanup {
   def main(args: Array[String]) {
+    Logger.getRootLogger().setLevel(Level.WARN)
     val sc = new SparkContext(args(0), "DriverWithoutCleanup")
     sc.parallelize(1 to 100, 4).count()
   }