Issue in Running Interactive Session - object scala in compiler mirror not found

[Akshat Bordia <ak...@gmail.com>]

Hi All,

We are seeing the following error while launching Interactive Session. The
Livy version is 0.5 and Spark is 2.4.4. We are running Java 8. Does anyone
have any idea what might be causing this? Appreciate your help.

INFO ApplicationMaster: Final app status: FAILED, exitCode: 13,
(reason: User class threw exception:
scala.reflect.internal.MissingRequirementError: object scala in
compiler mirror not found.
	at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.scala:17)
	at scala.reflect.internal.MissingRequirementError$.notFound(MissingRequirementError.scala:18)
	at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:53)
	at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:66)
	at scala.reflect.internal.Mirrors$RootsBase.getPackage(Mirrors.scala:173)
	at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackage$lzycompute(Definitions.scala:161)
	at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackage(Definitions.scala:161)
	at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackageClass$lzycompute(Definitions.scala:162)
	at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackageClass(Definitions.scala:162)
	at scala.reflect.internal.Definitions$DefinitionsClass.init(Definitions.scala:1391)
	at scala.tools.nsc.Global$Run.<init>(Global.scala:1242)
	at scala.tools.nsc.interpreter.IMain.addUrlsToClassPath(IMain.scala:264)
	at org.apache.livy.repl.SparkInterpreter$$anonfun$start$1.apply$mcV$sp(SparkInterpreter.scala:120)
	at org.apache.livy.repl.SparkInterpreter$$anonfun$start$1.apply(SparkInterpreter.scala:74)
	at org.apache.livy.repl.SparkInterpreter$$anonfun$start$1.apply(SparkInterpreter.scala:74)
	at org.apache.livy.repl.AbstractSparkInterpreter.restoreContextClassLoader(AbstractSparkInterpreter.scala:340)
	at org.apache.livy.repl.SparkInterpreter.start(SparkInterpreter.scala:74)
	at org.apache.livy.repl.Session$$anonfun$1.apply(Session.scala:129)
	at org.apache.livy.repl.Session$$anonfun$1.apply(Session.scala:123)
	at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
	at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
	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)


Thanks,
Akshat