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https://issues.apache.org/jira/browse/SPARK-6288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14523465#comment-14523465
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Josh Rosen commented on SPARK-6288:
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Would be great to get a newer Pyrolite version in. I tried to help out w/
getting Pyrolite published to Maven, but some timed passed and now I'm too busy
to help w/ the final step. I case you or someone else wants to step in and
finish it, though, here are links to discussion:
https://github.com/irmen/Pyrolite/issues/3#issuecomment-96610954
> Pyrolite calls hashCode to cache previously serialized objects
> --------------------------------------------------------------
>
> Key: SPARK-6288
> URL: https://issues.apache.org/jira/browse/SPARK-6288
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 1.0.2, 1.1.1, 1.2.1, 1.3.0
> Reporter: Xiangrui Meng
> Assignee: Josh Rosen
> Attachments: Screen Shot 2015-03-13 at 10.45.35 AM.png
>
>
> https://github.com/irmen/Pyrolite/blob/v2.0/java/src/net/razorvine/pickle/Pickler.java#L140
> This operation could be quite expensive, compared to serializing the object
> directly, because hashCode usually needs to access all data stored in the
> object. Maybe we should disable this feature by default.
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