[jira] [Created] (FLINK-25837) RPC Serialization failure when multiple job managers

["Matthew McMahon (Jira)" <ji...@apache.org>]

Matthew McMahon created FLINK-25837:
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             Summary: RPC Serialization failure when multiple job managers
                 Key: FLINK-25837
                 URL: https://issues.apache.org/jira/browse/FLINK-25837
             Project: Flink
          Issue Type: Bug
    Affects Versions: 1.14.3
            Reporter: Matthew McMahon


I'm using 1.14.3 with the Lyft FlinkK8sOperator to run the cluster.

Previously with 1.10.1 I had no problems, but now it seems when I have multiple Job Managers deployed, I am continually seeing this error, that prevents the Jobs from starting.

{code}
org.apache.flink.runtime.rpc.akka.exceptions.AkkaRpcException: Failed to serialize the result for RPC call : requestMultipleJobDetails.
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.serializeRemoteResultAndVerifySize(AkkaRpcActor.java:417)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$sendAsyncResponse$2(AkkaRpcActor.java:373)
	at java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:836)
	at java.util.concurrent.CompletableFuture.uniHandleStage(CompletableFuture.java:848)
	at java.util.concurrent.CompletableFuture.handle(CompletableFuture.java:2168)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.sendAsyncResponse(AkkaRpcActor.java:365)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:332)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:217)
	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:78)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:163)
	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:24)
	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:20)
	at scala.PartialFunction.applyOrElse(PartialFunction.scala:123)
	at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122)
	at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:20)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
	at akka.actor.Actor.aroundReceive(Actor.scala:537)
	at akka.actor.Actor.aroundReceive$(Actor.scala:535)
	at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:220)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:580)
	at akka.actor.ActorCell.invoke(ActorCell.scala:548)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:270)
	at akka.dispatch.Mailbox.run(Mailbox.scala:231)
	at akka.dispatch.Mailbox.exec(Mailbox.scala:243)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:175)
Caused by: java.io.NotSerializableException: java.util.HashMap$Values
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
	at org.apache.flink.util.InstantiationUtil.serializeObject(InstantiationUtil.java:632)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcSerializedValue.valueOf(AkkaRpcSerializedValue.java:66)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.serializeRemoteResultAndVerifySize(AkkaRpcActor.java:400)
	... 29 more
{code}

I don't see where a HashMap exists in the requestMultipleJobDetails path



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