org.apache.spark.SparkException: 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.SharedSparkContext$class.initializeContext(SharedSparkContext.scala:41) org.apache.spark.serializer.KryoSerializerSuite.initializeContext(KryoSerializerSuite.scala:36) org.apache.spark.SharedSparkContext$class.beforeAll(SharedSparkContext.scala:48) org.apache.spark.serializer.KryoSerializerSuite.beforeAll(KryoSerializerSuite.scala:36) org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:212) org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:210) org.apache.spark.SparkFunSuite.run(SparkFunSuite.scala:52) org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:314) org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:480) sbt.ForkMain$Run$2.call(ForkMain.java:296) sbt.ForkMain$Run$2.call(ForkMain.java:286) java.util.concurrent.FutureTask.run(FutureTask.java:266) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) java.lang.Thread.run(Thread.java:748)

sbt.ForkMain$ForkError: org.apache.spark.SparkException: Only one SparkContext may be running in this JVM (see SPARK-2243). To ignore this error, set spark.driver.allowMultipleContexts = true. The currently running SparkContext was created at:
org.apache.spark.SharedSparkContext$class.initializeContext(SharedSparkContext.scala:41)
org.apache.spark.serializer.KryoSerializerSuite.initializeContext(KryoSerializerSuite.scala:36)
org.apache.spark.SharedSparkContext$class.beforeAll(SharedSparkContext.scala:48)
org.apache.spark.serializer.KryoSerializerSuite.beforeAll(KryoSerializerSuite.scala:36)
org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:212)
org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:210)
org.apache.spark.SparkFunSuite.run(SparkFunSuite.scala:52)
org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:314)
org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:480)
sbt.ForkMain$Run$2.call(ForkMain.java:296)
sbt.ForkMain$Run$2.call(ForkMain.java:286)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)
	at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$2.apply(SparkContext.scala:2504)
	at org.apache.spark.SparkContext$$anonfun$assertNoOtherContextIsRunning$2.apply(SparkContext.scala:2500)
	at scala.Option.foreach(Option.scala:257)
	at org.apache.spark.SparkContext$.assertNoOtherContextIsRunning(SparkContext.scala:2500)
	at org.apache.spark.SparkContext$.markPartiallyConstructed(SparkContext.scala:2589)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:85)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:145)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:158)
	at org.apache.spark.scheduler.TaskSetManagerSuite$$anonfun$20.apply(TaskSetManagerSuite.scala:385)
	at org.apache.spark.scheduler.TaskSetManagerSuite$$anonfun$20.apply(TaskSetManagerSuite.scala:384)
	at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
	at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
	at org.scalatest.Transformer.apply(Transformer.scala:22)
	at org.scalatest.Transformer.apply(Transformer.scala:20)
	at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:186)
	at org.apache.spark.SparkFunSuite.withFixture(SparkFunSuite.scala:103)
	at org.scalatest.FunSuiteLike$class.invokeWithFixture$1(FunSuiteLike.scala:183)
	at org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:196)
	at org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:196)
	at org.scalatest.SuperEngine.runTestImpl(Engine.scala:289)
	at org.scalatest.FunSuiteLike$class.runTest(FunSuiteLike.scala:196)
	at org.apache.spark.scheduler.TaskSetManagerSuite.org$scalatest$BeforeAndAfterEach$$super$runTest(TaskSetManagerSuite.scala:164)
	at org.scalatest.BeforeAndAfterEach$class.runTest(BeforeAndAfterEach.scala:221)
	at org.apache.spark.scheduler.TaskSetManagerSuite.runTest(TaskSetManagerSuite.scala:164)
	at org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:229)
	at org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:229)
	at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:396)
	at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:384)
	at scala.collection.immutable.List.foreach(List.scala:392)
	at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:384)
	at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:379)
	at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:461)
	at org.scalatest.FunSuiteLike$class.runTests(FunSuiteLike.scala:229)
	at org.scalatest.FunSuite.runTests(FunSuite.scala:1560)
	at org.scalatest.Suite$class.run(Suite.scala:1147)
	at org.scalatest.FunSuite.org$scalatest$FunSuiteLike$$super$run(FunSuite.scala:1560)
	at org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:233)
	at org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:233)
	at org.scalatest.SuperEngine.runImpl(Engine.scala:521)
	at org.scalatest.FunSuiteLike$class.run(FunSuiteLike.scala:233)
	at org.apache.spark.SparkFunSuite.org$scalatest$BeforeAndAfterAll$$super$run(SparkFunSuite.scala:52)
	at org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:213)
	at org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:210)
	at org.apache.spark.SparkFunSuite.run(SparkFunSuite.scala:52)
	at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:314)
	at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:480)
	at sbt.ForkMain$Run$2.call(ForkMain.java:296)
	at sbt.ForkMain$Run$2.call(ForkMain.java:286)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)