If you run the JVM with -Dsun.io.serialization.extendedDebugInfo=true
it will dump the 'path' to the unserializable object when an error
occurs.

On Wed, Nov 5, 2014 at 11:56 PM, ankits <ankitso...@gmail.com> wrote:
> In my spark job, I have a loop something like this:
>
> bla.forEachRdd(rdd => {
>   //init some vars
>   rdd.forEachPartition(partiton => {
>     //init some vars
>     partition.foreach(kv => {
>      ...
>
> I am seeing serialization errors (unread block data), because I think spark
> is trying to serialize the whole containing class. But I have been careful
> not to reference instance vars in the block.
>
> Is there a way to see exactly what class is failing serialization, and maybe
> how spark decided it needs to be serialized?
>
>
>
> --
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