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https://issues.apache.org/jira/browse/SPARK-2758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin resolved SPARK-2758.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1.0

> UnionRDD's UnionPartition should not reference parent RDDs
> ----------------------------------------------------------
>
>                 Key: SPARK-2758
>                 URL: https://issues.apache.org/jira/browse/SPARK-2758
>             Project: Spark
>          Issue Type: Improvement
>    Affects Versions: 1.0.0, 1.0.1, 1.0.2
>            Reporter: Reynold Xin
>            Assignee: Reynold Xin
>             Fix For: 1.1.0
>
>
> UnionPartition has a non-transient field referencing the parent RDD, to be 
> used in compute (iterator). That causes some trouble with task size because 
> partition objects are supposed to be small.



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