[ 
https://issues.apache.org/jira/browse/FLINK-9267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460061#comment-16460061
 ] 

Kedar Mhaswade commented on FLINK-9267:
---------------------------------------

Wow! Thank you for the tip above. I have been able to talk to the cluster now. 
There are still serialization errors:
{noformat}
2018-05-01 12:30:17,598 ERROR Remoting                                          
            - scala.Option; local class incompatible: stream classdesc 
serialVersionUID = -114498752079829388, local class serialVersionUID = 
-2062608324514658839
java.io.InvalidClassException: scala.Option; local class incompatible: stream 
classdesc serialVersionUID = -114498752079829388, local class serialVersionUID 
= -2062608324514658839
        at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:687)
        at 
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1876)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1745)
        at 
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1876)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1745)
        at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2033)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567)
        at 
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2278)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2202)
        at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2060)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:427)
        at 
akka.serialization.JavaSerializer$$anonfun$1.apply(Serializer.scala:136)
        at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
        at akka.serialization.JavaSerializer.fromBinary(Serializer.scala:136)
        at 
akka.serialization.Serialization$$anonfun$deserialize$1.apply(Serialization.scala:104)
        at scala.util.Try$.apply(Try.scala:161)
        at akka.serialization.Serialization.deserialize(Serialization.scala:98)
        at 
akka.remote.serialization.MessageContainerSerializer.fromBinary(MessageContainerSerializer.scala:63)
        at 
akka.serialization.Serialization$$anonfun$deserialize$1.apply(Serialization.scala:104)
        at scala.util.Try$.apply(Try.scala:161)
        at akka.serialization.Serialization.deserialize(Serialization.scala:98)
        at 
akka.remote.MessageSerializer$.deserialize(MessageSerializer.scala:23)
        at 
akka.remote.DefaultMessageDispatcher.payload$lzycompute$1(Endpoint.scala:58)
        at akka.remote.DefaultMessageDispatcher.payload$1(Endpoint.scala:58)
        at akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:76)
        at 
akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:967)
        at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
        at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:437)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
        at akka.actor.ActorCell.invoke(ActorCell.scala:487)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
        at akka.dispatch.Mailbox.run(Mailbox.scala:220)
        at 
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at 
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at 
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at 
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
{noformat}
but this gives me something to work with. Thanks again. We would soon close 
this as "not a Flink  issue". Will do that.

> Classloading issues when using RemoteEnvironment ...
> ----------------------------------------------------
>
>                 Key: FLINK-9267
>                 URL: https://issues.apache.org/jira/browse/FLINK-9267
>             Project: Flink
>          Issue Type: Bug
>          Components: Job-Submission
>    Affects Versions: 1.4.2
>         Environment: I have tried with Flink 1.3.3, Flink 1.4.2 and Flink 
> 1.6.0-SNAPSHOT.
> Oracle JDK 1.8.0_161 on Mac with a local cluster containing one JM and one TM.
>            Reporter: Kedar Mhaswade
>            Priority: Major
>
> See these two threads:
>  * [Nov 
> 2017|http://mail-archives.apache.org/mod_mbox/flink-user/201711.mbox/%[email protected]%3E]
>  * [April 
> 2018|http://mail-archives.apache.org/mod_mbox/flink-user/201804.mbox/%3CCABzSAw_sQ149F8%2BS2Mpg%3DCH75F_7PuUx3hQYjdnLmOUL5O23oQ%40mail.gmail.com%3E]
> Both these threads show the classloading problems with using the 
> {{RemoteEnvironment}}. The instructions to [reproduce are 
> here|http://mail-archives.apache.org/mod_mbox/flink-user/201804.mbox/%3ccabzsaw_0qw_44xvjdtwz9y+s-pfgg2+cfx2c46gwqqngjj0...@mail.gmail.com%3E].
>  



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