[jira] [Commented] (SPARK-1877) ClassNotFoundException when loading RDD with serialized objects

["Bogdan Ghidireac (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-1877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14001423#comment-14001423 ] 

Bogdan Ghidireac commented on SPARK-1877:
-----------------------------------------

Submitted the patch as a GitHub pull request.
https://github.com/apache/spark/pull/821

> 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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