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https://issues.apache.org/jira/browse/SPARK-17145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15427565#comment-15427565
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Liwei Lin commented on SPARK-17145:
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hi [~abdulla16] can you try https://github.com/apache/spark/pull/14698 out and
see if it solves your problem? Thanks!
> Object with many fields causes Seq Serialization Bug
> -----------------------------------------------------
>
> Key: SPARK-17145
> URL: https://issues.apache.org/jira/browse/SPARK-17145
> Project: Spark
> Issue Type: Bug
> Affects Versions: 2.0.0
> Environment: OS: OSX El Capitan 10.11.6
> Reporter: Abdulla Al-Qawasmeh
>
> The unit test here
> (https://gist.github.com/abdulla16/433faf7df59fce11a5fff284bac0d945)
> describes the problem.
> It looks like Spark is having problems serializing a Scala Seq when it's part
> of an object with many fields (I'm not 100% sure it's a serialization
> problem). The deserialized Seq ends up with as many items as the original
> Seq, however, all the items are copies of the last item in the original Seq.
> The object that I used in my unit test (as an example) is a Tuple5. However,
> I've seen this behavior in other types of objects.
> Reducing MyClass5 to only two fields (field34 and field35) causes the unit
> test to pass.
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