akka
IllegalStateException: Pool shutdown unexpectedly
This is harmless since it's only in the shutdown of tests but would be nice if we could avoid the noise
2021-02-15T09:48:54.9452923Z [ERROR] [02/15/2021 09:48:54.927] [IntegrationTest-akka.actor.default-dispatcher-3] [akka://[email protected]:38697/system/pool-master] connection pool for Pool(shared->http://127.0.0.1:40223) has shut down unexpectedly
2021-02-15T09:48:54.9454886Z java.lang.IllegalStateException: Pool shutdown unexpectedly
2021-02-15T09:48:54.9456282Z at akka.http.impl.engine.client.PoolInterface$Logic.postStop(PoolInterface.scala:206)
2021-02-15T09:48:54.9458171Z at akka.stream.impl.fusing.GraphInterpreter.finalizeStage(GraphInterpreter.scala:599)
2021-02-15T09:48:54.9460099Z at akka.stream.impl.fusing.GraphInterpreter.finish(GraphInterpreter.scala:324)
2021-02-15T09:48:54.9462114Z at akka.stream.impl.fusing.GraphInterpreterShell.tryAbort(ActorGraphInterpreter.scala:664)
2021-02-15T09:48:54.9464236Z at akka.stream.impl.fusing.ActorGraphInterpreter.$anonfun$postStop$1(ActorGraphInterpreter.scala:806)
2021-02-15T09:48:54.9466288Z at akka.stream.impl.fusing.ActorGraphInterpreter.$anonfun$postStop$1$adapted(ActorGraphInterpreter.scala:806)
2021-02-15T09:48:54.9467831Z at scala.collection.immutable.Set$Set1.foreach(Set.scala:168)
2021-02-15T09:48:54.9469464Z at akka.stream.impl.fusing.ActorGraphInterpreter.postStop(ActorGraphInterpreter.scala:806)
2021-02-15T09:48:54.9471310Z at akka.actor.Actor.aroundPostStop(Actor.scala:556)
2021-02-15T09:48:54.9472449Z at akka.actor.Actor.aroundPostStop$(Actor.scala:556)
2021-02-15T09:48:54.9474429Z at akka.stream.impl.fusing.ActorGraphInterpreter.aroundPostStop(ActorGraphInterpreter.scala:691)
2021-02-15T09:48:54.9476664Z at akka.actor.dungeon.FaultHandling.finishTerminate(FaultHandling.scala:240)
2021-02-15T09:48:54.9478226Z at akka.actor.dungeon.FaultHandling.terminate(FaultHandling.scala:197)
2021-02-15T09:48:54.9479646Z at akka.actor.dungeon.FaultHandling.terminate$(FaultHandling.scala:167)
2021-02-15T09:48:54.9480852Z at akka.actor.ActorCell.terminate(ActorCell.scala:410)
2021-02-15T09:48:54.9481812Z at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:519)
2021-02-15T09:48:54.9482833Z at akka.actor.ActorCell.systemInvoke(ActorCell.scala:535)
2021-02-15T09:48:54.9484118Z at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:295)
2021-02-15T09:48:54.9488448Z at akka.dispatch.Mailbox.run(Mailbox.scala:230)
2021-02-15T09:48:54.9489611Z at akka.dispatch.Mailbox.exec(Mailbox.scala:243)
2021-02-15T09:48:54.9499251Z at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
2021-02-15T09:48:54.9502245Z at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
2021-02-15T09:48:54.9503996Z at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
2021-02-15T09:48:54.9505425Z at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
2021-02-15T09:48:54.9507266Z at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
~I think this is a consequence of https://github.com/akka/akka-platform-guide/issues/578#issuecomment-779449279~ . How does the application (and especially Spring, Spring Data and Hikari) shutdown when the trigger is a Cluster Downing reason?
IIUC, in a regular execution, the test completes and the testkit will gracefully terminate the Actor System. I'm not sure, thought, how in these ideal conditions are the Spring, Spring JPA and Hikari shutdown either.
Note that this specific exception is from the http pool, not the database pool.