This error is popping up after the service has started. Do you know what it is ?
2019-06-24T18:07:43.416Z [warn] akka.stream.scaladsl.RestartWithBackoffSource [sourceThread=country-akka.actor.default-dispatcher-19, akkaTimestamp=18:07:43.416UTC, akkaSource=RestartWithBackoffSource(akka://country), sourceActorSystem=country] - Restarting graph due to failure. stack_trace:
java.util.concurrent.ExecutionException: com.datastax.driver.core.exceptions.OperationTimedOutException: [cassandra.default.svc.cluster.local/10.110.193.222:9042] Timed out waiting for server response
at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:552)
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:513)
at akka.persistence.cassandra.package$$anon$1.$anonfun$run$1(package.scala:18)
at scala.util.Try$.apply(Try.scala:209)
at akka.persistence.cassandra.package$$anon$1.run(package.scala:18)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.datastax.driver.core.exceptions.OperationTimedOutException: [cassandra.default.svc.cluster.local/10.110.193.222:9042] Timed out waiting for server response
at com.datastax.driver.core.RequestHandler$SpeculativeExecution.onTimeout(RequestHandler.java:954)
at com.datastax.driver.core.Connection$ResponseHandler$1.run(Connection.java:1575)
at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:682)
at io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:757)
at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:485)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
... 1 more
and other errors when using the service:
akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka://country/system/sharding/CountryEntity#2049544105]] after [5000 ms]. Message of type [com.lightbend.lagom.scaladsl.persistence.CommandEnvelope]. A typical reason for `AskTimeoutException` is that the recipient actor didn't send a reply.
at akka.pattern.PromiseActorRef$.$anonfun$defaultOnTimeout$1(AskSupport.scala:671)
at akka.pattern.PromiseActorRef$.$anonfun$apply$1(AskSupport.scala:692)
at akka.actor.Scheduler$$anon$4.run(Scheduler.scala:199)
at scala.concurrent.Future$InternalCallbackExecutor$.unbatchedExecute(Future.scala:870)
at scala.concurrent.BatchingExecutor.execute(BatchingExecutor.scala:109)
at scala.concurrent.BatchingExecutor.execute$(BatchingExecutor.scala:103)
at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:868)
at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(LightArrayRevolverScheduler.scala:334)
at akka.actor.LightArrayRevolverScheduler$$anon$3.executeBucket$1(LightArrayRevolverScheduler.scala:285)
at akka.actor.LightArrayRevolverScheduler$$anon$3.nextTick(LightArrayRevolverScheduler.scala:289)
at akka.actor.LightArrayRevolverScheduler$$anon$3.run(LightArrayRevolverScheduler.scala:241)
at java.lang.Thread.run(Thread.java:748)