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https://issues.apache.org/jira/browse/SPARK-25176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-25176.
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Resolution: Fixed
Fix Version/s: 2.4.0
Issue resolved by pull request 22179
[https://github.com/apache/spark/pull/22179]
> Kryo fails to serialize a parametrised type hierarchy
> -----------------------------------------------------
>
> Key: SPARK-25176
> URL: https://issues.apache.org/jira/browse/SPARK-25176
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.2, 2.3.1
> Reporter: Mikhail Pryakhin
> Priority: Major
> Fix For: 2.4.0
>
>
> I'm using the latest spark version spark-core_2.11:2.3.1 which
> transitively depends on com.esotericsoftware:kryo-shaded:3.0.3 via the
> com.twitter:chill_2.11:0.8.0 dependency. This exact version of kryo
> serializer contains an issue [1,2] which results in throwing
> ClassCastExceptions when serialising parameterised type hierarchy.
> This issue has been fixed in kryo version 4.0.0 [3]. It would be great to
> have this update in Spark as well. Could you please upgrade the version of
> com.twitter:chill_2.11 dependency from 0.8.0 up to 0.9.2?
> You can find a simple test to reproduce the issue [4].
> [1] https://github.com/EsotericSoftware/kryo/issues/384
> [2] https://github.com/EsotericSoftware/kryo/issues/377
> [3] https://github.com/EsotericSoftware/kryo/releases/tag/kryo-parent-4.0.0
> [4] https://github.com/mpryahin/kryo-parametrized-type-inheritance
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