Do not enable SparkUI during tests

Author: Andrew Or

sql/core/src/main/scala/org/apache/spark/sql/test/TestSQLContext.scala

@@ -26,10 +26,10 @@ import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
 /** A SQLContext that can be used for local testing. */
 class LocalSQLContext
   extends SQLContext(
-    new SparkContext(
-      "local[2]",
-      "TestSQLContext",
-      new SparkConf().set("spark.sql.testkey", "true"))) {
+    new SparkContext("local[2]", "TestSQLContext", new SparkConf()
+      .set("spark.sql.testkey", "true")
+      // SPARK-8910
+      .set("spark.ui.enabled", "false"))) {
 
   override protected[sql] def createSession(): SQLSession = {
     new this.SQLSession()

sql/hive/src/main/scala/org/apache/spark/sql/hive/test/TestHive.scala

@@ -53,9 +53,10 @@ object TestHive
       "TestSQLContext",
       new SparkConf()
         .set("spark.sql.test", "")
-        .set(
-          "spark.sql.hive.metastore.barrierPrefixes",
-          "org.apache.spark.sql.hive.execution.PairSerDe")))
+        .set("spark.sql.hive.metastore.barrierPrefixes",
+          "org.apache.spark.sql.hive.execution.PairSerDe")
+        // SPARK-8910
+        .set("spark.ui.enabled", "false")))
 
 /**
  * A locally running test instance of Spark's Hive execution engine.