Bryan Cutler updated SPARK-23159:
    Summary: Update Cloudpickle to match version 0.4.3  (was: Update 
Cloudpickle to match version 0.4.2)

> Update Cloudpickle to match version 0.4.3
> -----------------------------------------
>                 Key: SPARK-23159
>                 URL: https://issues.apache.org/jira/browse/SPARK-23159
>             Project: Spark
>          Issue Type: Improvement
>          Components: PySpark
>    Affects Versions: 2.3.0
>            Reporter: Bryan Cutler
>            Priority: Major
> Update PySpark's version of Cloudpickle to match version 0.4.2.  The reasons 
> for doing this are:
>  * Pick up bug fixes, improvements with newer version
>  * Match a specific version as close as possible (Spark has additional 
> changes that might be necessary) to make future upgrades easier
> There are newer versions of Cloudpickle that can fix bugs with NamedTuple 
> pickling (that Spark currently has workarounds for), but these include other 
> changes that need some verification before bringing into Spark.  Upgrading 
> first to 0.4.2 will help make this verification easier.
> Discussion on the mailing list: 
> http://apache-spark-developers-list.1001551.n3.nabble.com/Thoughts-on-Cloudpickle-Update-td23188.html

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