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From Igor Berman <>
Subject Re: Spark on Yarn: Kryo throws ClassNotFoundException for class included in fat jar
Date Tue, 08 Sep 2015 08:13:51 GMT
as a starting point, attach your stacktrace...
ps: look for duplicates in your classpath, maybe you include another jar
with same class

On 8 September 2015 at 06:38, Nicholas R. Peterson <>

> I'm trying to run a Spark 1.4.1 job on my CDH5.4 cluster, through Yarn.
> Serialization is set to use Kryo.
> I have a large object which I send to the executors as a Broadcast. The
> object seems to serialize just fine. When it attempts to deserialize,
> though, Kryo throws a ClassNotFoundException... for a class that I include
> in the fat jar that I spark-submit.
> What could be causing this classpath issue with Kryo on the executors?
> Where should I even start looking to try to diagnose the problem? I
> appreciate any help you can provide.
> Thank you!
> -- Nick

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