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From "Hyukjin Kwon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-25176) Kryo fails to serialize a parametrised type hierarchy
Date Thu, 23 Aug 2018 03:30:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-25176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16589649#comment-16589649
] 

Hyukjin Kwon commented on SPARK-25176:
--------------------------------------

(please avoid to set Critical+ which is usually reserved for committers)

> 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
>
> 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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