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https://issues.apache.org/jira/browse/SPARK-14222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-14222.
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Resolution: Done
jackson-module-scala is cross-published for 2.12 from version 2.7.9 and 2.8.+
onwards, which I think may be sufficient to call this part done.
> Cross-publish jackson-module-scala for Scala 2.12
> -------------------------------------------------
>
> Key: SPARK-14222
> URL: https://issues.apache.org/jira/browse/SPARK-14222
> Project: Spark
> Issue Type: Sub-task
> Components: Build
> Reporter: Josh Rosen
> Assignee: Josh Rosen
>
> In order to build Spark against Scala 2.12, we need to either remove our
> jackson-module-scala dependency or cross-publish Jackson for Scala 2.12.
> Personally, I'd prefer to remove it because I don't think we make extensive
> use of it and because I'm not a huge fan of the implicit mapping between case
> classes and JSON wire formats (the extra verbosity required by other
> approaches is a feature, IMO, rather than a bug because it makes it much
> harder to accidentally break wire compatibility).
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