[jira] [Resolved] (SPARK-25176) Kryo fails to serialize a parametrised type hierarchy

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-25176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-25176.
-------------------------------
       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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