java.util.NoSuchElementException: head of empty list

Google Groups | Dan | 4 years ago
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    Recovering channel with shared state

    Google Groups | 4 years ago | Dan
    java.util.NoSuchElementException: head of empty list

    Root Cause Analysis

    1. java.util.NoSuchElementException

      head of empty list

      at scala.collection.immutable.Nil$.head()
    2. Scala
      ForkJoinPool.runWorker
      1. scala.collection.immutable.Nil$.head(List.scala:328)
      2. scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1478)
      2 frames
    3. Akka Actor
      ForkJoinExecutorConfigurator$MailboxExecutionTask.exec
      1. akka.actor.ActorCell.receiveMessage(ActorCell.scala:425)
      2. akka.actor.ActorCell.invoke(ActorCell.scala:386)
      3. akka.dispatch.Mailbox.processMailbox(Mailbox.scala:230)
      4. akka.dispatch.Mailbox.run(Mailbox.scala:212)
      5. akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:502)
      5 frames
    4. Scala
      ForkJoinWorkerThread.run
      1. scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:262)
      2. scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:975)
      3. scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1478)
      4. scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)
      4 frames