fix tests

Author: marmbrus

sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveSerDeSuite.scala

@@ -17,10 +17,19 @@
 
 package org.apache.spark.sql.hive.execution
 
+import org.scalatest.BeforeAndAfterAll
+
+import org.apache.spark.sql.hive.test.TestHive
+
 /**
  * A set of tests that validates support for Hive SerDe.
  */
-class HiveSerDeSuite extends HiveComparisonTest {
+class HiveSerDeSuite extends HiveComparisonTest with BeforeAndAfterAll {
+
+  override def beforeAll() = {
+    TestHive.cacheTables = false
+  }
+
   createQueryTest(
     "Read and write with LazySimpleSerDe (tab separated)",
     "SELECT * from serdeins")

sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/PruningSuite.scala

@@ -17,6 +17,8 @@
 
 package org.apache.spark.sql.hive.execution
 
+import org.scalatest.BeforeAndAfter
+
 import org.apache.spark.sql.hive.test.TestHive
 
 /* Implicit conversions */
@@ -25,10 +27,14 @@ import scala.collection.JavaConversions._
 /**
  * A set of test cases that validate partition and column pruning.
  */
-class PruningSuite extends HiveComparisonTest {
+class PruningSuite extends HiveComparisonTest with BeforeAndAfter {
   // MINOR HACK: You must run a query before calling reset the first time.
   TestHive.sql("SHOW TABLES")
 
+  override def beforeAll() = {
+    TestHive.cacheTables = false
+  }
+
   // Column/partition pruning is not implemented for `InMemoryColumnarTableScan` yet, need to reset
   // the environment to ensure all referenced tables in this suites are not cached in-memory.
   // Refer to https://issues.apache.org/jira/browse/SPARK-2283 for details.