diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileSourceStrategySuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileSourceStrategySuite.scala
index 04ac8fb0203e9..8703fe96e5878 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileSourceStrategySuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileSourceStrategySuite.scala
@@ -42,7 +42,7 @@ import org.apache.spark.util.Utils
 class FileSourceStrategySuite extends QueryTest with SharedSQLContext with PredicateHelper {
   import testImplicits._
 
-  protected override def sparkConf = new SparkConf().set("spark.default.parallelism", "1")
+  protected override def sparkConf = super.sparkConf.set("spark.default.parallelism", "1")
 
   test("unpartitioned table, single partition") {
     val table =
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/CompactibleFileStreamLogSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/CompactibleFileStreamLogSuite.scala
index 6a66ada036553..3d480b148db55 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/CompactibleFileStreamLogSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/CompactibleFileStreamLogSuite.scala
@@ -29,7 +29,7 @@ class CompactibleFileStreamLogSuite extends SparkFunSuite with SharedSQLContext
 
   /** To avoid caching of FS objects */
   override protected def sparkConf =
-    new SparkConf().set(s"spark.hadoop.fs.$scheme.impl.disable.cache", "true")
+    super.sparkConf.set(s"spark.hadoop.fs.$scheme.impl.disable.cache", "true")
 
   import CompactibleFileStreamLog._
 
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/HDFSMetadataLogSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/HDFSMetadataLogSuite.scala
index 2c425b8e0d723..7689bc03a4ccf 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/HDFSMetadataLogSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/HDFSMetadataLogSuite.scala
@@ -39,7 +39,7 @@ class HDFSMetadataLogSuite extends SparkFunSuite with SharedSQLContext {
 
   /** To avoid caching of FS objects */
   override protected def sparkConf =
-    new SparkConf().set(s"spark.hadoop.fs.$scheme.impl.disable.cache", "true")
+    super.sparkConf.set(s"spark.hadoop.fs.$scheme.impl.disable.cache", "true")
 
   private implicit def toOption[A](a: A): Option[A] = Option(a)
 
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala b/sql/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala
index fcf8eb1fd3a94..7c7dd4b8d5b25 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/test/SharedSQLContext.scala
@@ -29,7 +29,9 @@ import org.apache.spark.sql.internal.SQLConf
  */
 trait SharedSQLContext extends SQLTestUtils with BeforeAndAfterEach {
 
-  protected def sparkConf = new SparkConf()
+  protected def sparkConf = {
+    new SparkConf().set("spark.hadoop.fs.file.impl", classOf[DebugFilesystem].getName)
+  }
 
   /**
    * The [[TestSparkSession]] to use for all tests in this suite.
@@ -50,8 +52,7 @@ trait SharedSQLContext extends SQLTestUtils with BeforeAndAfterEach {
   protected implicit def sqlContext: SQLContext = _spark.sqlContext
 
   protected def createSparkSession: TestSparkSession = {
-    new TestSparkSession(
-      sparkConf.set("spark.hadoop.fs.file.impl", classOf[DebugFilesystem].getName))
+    new TestSparkSession(sparkConf)
   }
 
   /**