[SPARK-7287] [SPARK-8567] [TEST] Add sc.stop to applications in SparkSubmitSuite

Hopefully, this suite will not be flaky anymore.

Author: Yin Huai <yhuai@databricks.com>

Closes #7027 from yhuai/SPARK-8567 and squashes the following commits:

c0167e2 [Yin Huai] Add sc.stop().

3 files changed, 3 insertions, 0 deletions

diff --git a/core/src/test/scala/org/apache/spark/deploy/SparkSubmitSuite.scala b/core/src/test/scala/org/apache/spark/deploy/SparkSubmitSuite.scala
index 357ed90be3..2e05dec99b 100644
--- a/core/src/test/scala/org/apache/spark/deploy/SparkSubmitSuite.scala
+++ b/core/src/test/scala/org/apache/spark/deploy/SparkSubmitSuite.scala
@@ -548,6 +548,7 @@ object JarCreationTest extends Logging {
     if (result.nonEmpty) {
       throw new Exception("Could not load user class from jar:\n" + result(0))
     }
+    sc.stop()
   }
 }
 
@@ -573,6 +574,7 @@ object SimpleApplicationTest {
           s"Master had $config=$masterValue but executor had $config=$executorValue")
       }
     }
+    sc.stop()
   }
 }
 
diff --git a/sql/hive/src/test/resources/regression-test-SPARK-8489/Main.scala b/sql/hive/src/test/resources/regression-test-SPARK-8489/Main.scala
index e1715177e3..0e428ba1d7 100644
--- a/sql/hive/src/test/resources/regression-test-SPARK-8489/Main.scala
+++ b/sql/hive/src/test/resources/regression-test-SPARK-8489/Main.scala
@@ -38,6 +38,7 @@ object Main {
     val df = hc.createDataFrame(Seq(MyCoolClass("1", "2", "3")))
     df.collect()
     println("Regression test for SPARK-8489 success!")
+    sc.stop()
   }
 }
 
diff --git a/sql/hive/src/test/resources/regression-test-SPARK-8489/test.jar b/sql/hive/src/test/resources/regression-test-SPARK-8489/test.jar
index 4f59fba9ea..5944aa6076 100644
--- a/sql/hive/src/test/resources/regression-test-SPARK-8489/test.jar
+++ b/sql/hive/src/test/resources/regression-test-SPARK-8489/test.jar