scala> :paste
// Entering paste mode (ctrl-D to finish)

import scala.collection.parallel._
list.tasksupport = new ForkJoinTaskSupport(new scala.concurrent.forkjoin.ForkJoinPool(2))
val list = Seq(1 to 300).par

val listR = list.map(l => df.withColumn("l", lit(l)).groupBy("l").count.collect)

// Exiting paste mode, now interpreting.

<console>:43: warning: Reference to uninitialized value list
       list.tasksupport = new ForkJoinTaskSupport(new scala.concurrent.forkjoin.ForkJoinPool(2))
       ^
java.lang.NullPointerException
  ... 63 elided

scala> val list = Seq(1 to 300).par
list: scala.collection.parallel.ParSeq[scala.collection.immutable.Range.Inclusive] = ParVector(Range(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161,...
scala> list.tasksupport = new ForkJoinTaskSupport(new scala.concurrent.forkjoin.ForkJoinPool(2))
list.tasksupport: scala.collection.parallel.TaskSupport = scala.collection.parallel.ForkJoinTaskSupport@18c8c5ff

scala> val listR = list.map(l => df.withColumn("l", lit(l)).groupBy("l").count.collect)
java.lang.RuntimeException: Unsupported literal type class scala.collection.immutable.Range$Inclusive Range(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300)
  at org.apache.spark.sql.catalyst.expressions.Literal$.apply(literals.scala:77)
  at org.apache.spark.sql.catalyst.expressions.Literal$$anonfun$create$2.apply(literals.scala:163)
  at org.apache.spark.sql.catalyst.expressions.Literal$$anonfun$create$2.apply(literals.scala:163)
  at scala.util.Try.getOrElse(Try.scala:79)
  at org.apache.spark.sql.catalyst.expressions.Literal$.create(literals.scala:162)
  at org.apache.spark.sql.functions$.typedLit(functions.scala:112)
  at org.apache.spark.sql.functions$.lit(functions.scala:95)
  at $anonfun$1.apply(<console>:42)
  at $anonfun$1.apply(<console>:42)
  at scala.collection.parallel.AugmentedIterableIterator$class.map2combiner(RemainsIterator.scala:115)
  at scala.collection.parallel.immutable.ParVector$ParVectorIterator.map2combiner(ParVector.scala:62)
  at scala.collection.parallel.ParIterableLike$Map.leaf(ParIterableLike.scala:1054)
  at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply$mcV$sp(Tasks.scala:49)
  at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:48)
  at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:48)
  at scala.collection.parallel.Task$class.tryLeaf(Tasks.scala:51)
  at scala.collection.parallel.ParIterableLike$Map.tryLeaf(ParIterableLike.scala:1051)
  at scala.collection.parallel.AdaptiveWorkStealingTasks$WrappedTask$class.compute(Tasks.scala:152)
  at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.compute(Tasks.scala:443)
  at scala.concurrent.forkjoin.RecursiveAction.exec(RecursiveAction.java:160)
  at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
  at scala.concurrent.forkjoin.ForkJoinTask.doJoin(ForkJoinTask.java:341)
  at scala.concurrent.forkjoin.ForkJoinTask.join(ForkJoinTask.java:673)
  at scala.collection.parallel.ForkJoinTasks$WrappedTask$class.sync(Tasks.scala:378)
  at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.sync(Tasks.scala:443)
  at scala.collection.parallel.ForkJoinTasks$class.executeAndWaitResult(Tasks.scala:426)
  at scala.collection.parallel.ForkJoinTaskSupport.executeAndWaitResult(TaskSupport.scala:56)
  at scala.collection.parallel.ParIterableLike$ResultMapping.leaf(ParIterableLike.scala:958)
  at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply$mcV$sp(Tasks.scala:49)
  at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:48)
  at scala.collection.parallel.Task$$anonfun$tryLeaf$1.apply(Tasks.scala:48)
  at scala.collection.parallel.Task$class.tryLeaf(Tasks.scala:51)
  at scala.collection.parallel.ParIterableLike$ResultMapping.tryLeaf(ParIterableLike.scala:953)
  at scala.collection.parallel.AdaptiveWorkStealingTasks$WrappedTask$class.compute(Tasks.scala:152)
  at scala.collection.parallel.AdaptiveWorkStealingForkJoinTasks$WrappedTask.compute(Tasks.scala:443)
  at scala.concurrent.forkjoin.RecursiveAction.exec(RecursiveAction.java:160)
  at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
  at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
  at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
  at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

scala>