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From Zuhair Khayyat <zuhair.khay...@gmail.com>
Subject Modifying RDD.scala
Date Wed, 27 Nov 2013 15:22:23 GMT
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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