Bogdan Ghidireac created SPARK-1877:
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Summary: ClassNotFoundException when loading RDD with serialized
objects
Key: SPARK-1877
URL: https://issues.apache.org/jira/browse/SPARK-1877
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.0.0
Environment: standalone Spark cluster, jdk 1.7
Reporter: Bogdan Ghidireac
When I load a RDD that has custom serialized objects, Spark throws
ClassNotFoundException. This happens only when Spark is deployed as a
standalone cluster, it works fine when Spark is local.
I debugged the issue and I noticed that ObjectInputStream.resolveClass does not
use ExecutorURLClassLoader set by SparkSubmit. You have to explicitly set the
classloader in SparkContext.objectFile for ObjectInputStream when deserializing
objects.
Utils.deserialize[Array[T]](...., Thread.currentThread.getContextClassLoader)
I will attach a patch shortly...
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