[akka-user] Re: PersistenceQuery.ReadJournal vs PersistentActor.onReceiveRecover

[Jan-Terje Sørensen]

Do you have a domain example of when this is usefull? 

torsdag 31. desember 2015 15.33.15 UTC+1 skrev Jan-Terje Sørensen følgende:
>
> Hi,
>
> Both PersistenceQuery.ReadJournal and PersistentActor.onReceiveRecover 
> handles events. 
>
> As I understand it we shall always use PersisteceQuery when projecting our 
> data. Can anyone please explain when I need to use the 
> PersistentActor.receiveRecover?
>

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Re: [akka-user] akka-persistance issue

[Patrik Nordwall]

That is strange. Do you have a way to reproduce it?
/Patrik

On Thu, Dec 31, 2015 at 2:30 PM, Neel Sachdeva  wrote:

>
> Hi Guys,
>
> I'm seeing this exception on server :
>
>
> akka.actor.OneForOneStrategy -
> java.util.NoSuchElementException
> at java.util.LinkedList.removeFirst(LinkedList.java:270)
> at java.util.LinkedList.pop(LinkedList.java:801)
> at
> akka.persistence.Eventsourced$$anon$2.onWriteMessageComplete(Eventsourced.scala:632)
> at
> akka.persistence.Eventsourced$ProcessingState$$anonfun$2.applyOrElse(Eventsourced.scala:554)
> at
> scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:36)
> at
> akka.persistence.Eventsourced$$anon$2.stateReceive(Eventsourced.scala:628)
> at
> akka.persistence.Eventsourced$class.aroundReceive(Eventsourced.scala:158)
> at catalyst.actors.subr.Subr.aroundReceive(Subr.scala:242)
> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
> at akka.actor.ActorCell.invoke_aroundBody0(ActorCell.scala:495)
> at akka.actor.ActorCell$AjcClosure1.run(ActorCell.scala:1)
> at
> org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:149)
> at
> akka.kamon.instrumentation.ActorCellInstrumentation$$anonfun$aroundBehaviourInvoke$1.apply(ActorCellInstrumentation.scala:63)
> at kamon.trace.Tracer$.withContext(TracerModule.scala:53)
> at
> akka.kamon.instrumentation.ActorCellInstrumentation.aroundBehaviourInvoke(ActorCellInstrumentation.scala:62)
> at akka.actor.ActorCell.invoke(ActorCell.scala:488)
> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
> at akka.dispatch.Mailbox.run(Mailbox.scala:224)
> at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
> 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)
> 2015-12-22 14:01:16,876 DEBUG catalyst.actors.subr.Subr - restarting
>
>
> Problem is being caused at line 632 here
> https://github.com/akka/akka/blob/master/akka-persistence/src/main/scala/akka/persistence/Eventsourced.scala
> Any idea whats happening here ?
>
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-- 

Patrik Nordwall
Typesafe  -  Reactive apps on the JVM
Twitter: @patriknw

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