vanzin commented on a change in pull request #25709: 
[SPARK-29007][STREAMING][MLLIB][TESTS] Enforce not leaking SparkContext in 
tests which creates new StreamingContext with new SparkContext
URL: https://github.com/apache/spark/pull/25709#discussion_r323013287
 
 

 ##########
 File path: 
streaming/src/test/scala/org/apache/spark/streaming/DStreamScopeSuite.scala
 ##########
 @@ -30,28 +30,23 @@ import org.apache.spark.util.ManualClock
 /**
  * Tests whether scope information is passed from DStream operations to RDDs 
correctly.
  */
-class DStreamScopeSuite extends SparkFunSuite with BeforeAndAfter with 
BeforeAndAfterAll {
-  private var ssc: StreamingContext = null
-  private val batchDuration: Duration = Seconds(1)
+class DStreamScopeSuite
+  extends SparkFunSuite
+  with LocalStreamingContext
+  with BeforeAndAfter
 
 Review comment:
   Not needed / wanted?

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