Only one SparkContext may be running in this JVM (see SPARK-2243). To ignore this error, set spark.driver.allowMultipleContexts = true. The currently running SparkContext was created at: org.apache.spark.SparkContext.<init>(SparkContext.scala:82) org.apache.spark.streaming.StreamingContext$.createNewSparkContext(StreamingContext.scala:874) org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:81) org.apache.spark.streaming.StreamingContextSuite$$anonfun$8.apply$mcV$sp(StreamingContextSuite.scala:104) org.apache.spark.streaming.StreamingContextSuite$$anonfun$8.apply(StreamingContextSuite.scala:101) org.apache.spark.streaming.StreamingContextSuite$$anonfun$8.apply(StreamingContextSuite.scala:101) org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22) org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85) org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104) org.scalatest.Transformer.apply(Transformer.scala:22) org.scalatest.Transformer.apply(Transformer.scala:20) org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:166) org.apache.spark.SparkFunSuite.withFixture(SparkFunSuite.scala:42) org.scalatest.FunSuiteLike$class.invokeWithFixture$1(FunSuiteLike.scala:163) org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:175) org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:175) org.scalatest.SuperEngine.runTestImpl(Engine.scala:306) org.scalatest.FunSuiteLike$class.runTest(FunSuiteLike.scala:175) org.apache.spark.streaming.StreamingContextSuite.org$scalatest$BeforeAndAfter$$super$runTest(StreamingContextSuite.scala:42) org.scalatest.BeforeAndAfter$class.runTest(BeforeAndAfter.scala:200)

sbt.ForkMain$ForkError: Only one SparkContext may be running in this JVM (see SPARK-2243). To ignore this error, set spark.driver.allowMultipleContexts = true. The currently running SparkContext was created at:
org.apache.spark.SparkContext.<init>(SparkContext.scala:82)
org.apache.spark.streaming.StreamingContext$.createNewSparkContext(StreamingContext.scala:874)
org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:81)
org.apache.spark.streaming.StreamingContextSuite$$anonfun$8.apply$mcV$sp(StreamingContextSuite.scala:104)
org.apache.spark.streaming.StreamingContextSuite$$anonfun$8.apply(StreamingContextSuite.scala:101)
org.apache.spark.streaming.StreamingContextSuite$$anonfun$8.apply(StreamingContextSuite.scala:101)
org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22)
org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
org.scalatest.Transformer.apply(Transformer.scala:22)
org.scalatest.Transformer.apply(Transformer.scala:20)
org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:166)
org.apache.spark.SparkFunSuite.withFixture(SparkFunSuite.scala:42)
org.scalatest.FunSuiteLike$class.invokeWithFixture$1(FunSuiteLike.scala:163)
org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:175)
org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:175)
org.scalatest.SuperEngine.runTestImpl(Engine.scala:306)
org.scalatest.FunSuiteLike$class.runTest(FunSuiteLike.scala:175)
org.apache.spark.streaming.StreamingContextSuite.org$scalatest$BeforeAndAfter$$super$runTest(StreamingContextSuite.scala:42)
org.scalatest.BeforeAndAfter$class.runTest(BeforeAndAfter.scala:200)
	at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$1.apply(SparkContext.scala:2257)
	at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$1.apply(SparkContext.scala:2239)
	at scala.Option.foreach(Option.scala:236)
	at org.apache.spark.SparkContext$.assertNoOtherContextIsRunning(SparkContext.scala:2239)
	at org.apache.spark.SparkContext$.markPartiallyConstructed(SparkContext.scala:2312)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:91)
	at org.apache.spark.streaming.rdd.WriteAheadLogBackedBlockRDDSuite.beforeAll(WriteAheadLogBackedBlockRDDSuite.scala:53)
	at org.scalatest.BeforeAndAfterAll$class.beforeAll(BeforeAndAfterAll.scala:187)
	at org.apache.spark.streaming.rdd.WriteAheadLogBackedBlockRDDSuite.beforeAll(WriteAheadLogBackedBlockRDDSuite.scala:31)
	at org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:253)
	at org.apache.spark.streaming.rdd.WriteAheadLogBackedBlockRDDSuite.run(WriteAheadLogBackedBlockRDDSuite.scala:31)
	at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:462)
	at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:671)
	at sbt.ForkMain$Run$2.call(ForkMain.java:294)
	at sbt.ForkMain$Run$2.call(ForkMain.java:284)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)