[jira] [Resolved] (SPARK-2104) RangePartitioner should use user specified serializer to serialize range bounds

["Reynold Xin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin resolved SPARK-2104.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1.0

> RangePartitioner should use user specified serializer to serialize range bounds
> -------------------------------------------------------------------------------
>
>                 Key: SPARK-2104
>                 URL: https://issues.apache.org/jira/browse/SPARK-2104
>             Project: Spark
>          Issue Type: Bug
>            Reporter: Reynold Xin
>            Assignee: Saisai Shao
>             Fix For: 1.1.0
>
>
> Otherwise it is pretty annoying to do a sort on types that are not java serializable. 
> To reproduce, just set the serializer to Kryo, and run the following job:
> {code}
> class JavaNonSerializableClass extends Comparable { override def compareTo(o: JavaNonSerializableClass) = 0 }
> sc.parallelize(Seq(new JavaNonSerializableClass, new JavaNonSerializableClass), 2).map(x => (x,x)).sortByKey()
> {code}
> Basically the partitioner will always be serialized using Java (by the task closure serializer). However, the rangeBounds variable in RangePartitioner should be serialized with the user specified serializer. 



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