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From Gerard Maas <gerard.m...@gmail.com>
Subject Re: Modifying RDD.scala
Date Wed, 27 Nov 2013 15:29:20 GMT
>From the looks of your exception, you modified your local class, but you
forgot to deploy those local changes to the cluster. This error msg:
classdesc serialVersionUID = 5151096093324583655, local class
serialVersionUID = 9012954318378784201

indicates that a version being de-serialized is different from the local
version. Make sure you deploy your changes across your Spark cluster.

-kr, Gerard.


On Wed, Nov 27, 2013 at 4:22 PM, Zuhair Khayyat <zuhair.khayyat@gmail.com>wrote:

> Dear SPARK members,
>
> I am trying to start developing on SPARK source code. I have added a new
> dummy function in RDD.scala to test if it compiles and runs. The modified
> Spark compiled correctly but when I execute my code I got the following
> error:
>
> java.io.InvalidClassException: spark.RDD; local class incompatible: stream
> classdesc serialVersionUID = 5151096093324583655, local class
> serialVersionUID = 9012954318378784201
>         at
> java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:617)
>         at
> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1620)
>         at
> java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
>         at
> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1620)
>         at
> java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
>         at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769)
>         at
> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
>         at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
>         at
> spark.JavaDeserializationStream.readObject(JavaSerializer.scala:23)
>         at
> spark.scheduler.ShuffleMapTask$.deserializeInfo(ShuffleMapTask.scala:54)
>         at
> spark.scheduler.ShuffleMapTask.readExternal(ShuffleMapTask.scala:111)
>         at
> java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1835)
>         at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1794)
>         at
> java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
>         at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
>         at
> spark.JavaDeserializationStream.readObject(JavaSerializer.scala:23)
>         at
> spark.JavaSerializerInstance.deserialize(JavaSerializer.scala:45)
>         at spark.executor.Executor$TaskRunner.run(Executor.scala:96)
>         at
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> 13/11/27 17:47:43 ERROR executor.StandaloneExecutorBackend: Driver or
> worker disconnected! Shutting down.
>
> Can you please help me to find out what went wrong? Thank you
>
> Zuhair Khayyat
>

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