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https://issues.apache.org/jira/browse/SPARK-28750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16908587#comment-16908587
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Sean Owen commented on SPARK-28750:
-----------------------------------
[~dongjoon] I've tried this for an hour, and can't get it to work.
{{scala-maven-plugin}} seems to hard-code specifying {{-source}} and
{{-target}}, and this can't be combine with {{-release}}. The failure is from
Javac, which is called from SBT, and called from the plugin. Without that, I
don't think we can safely cross-compile for Java 8 from Java 11. This is with
the latest plugin version 4.1.1.
There might be an answer, or maybe needs some update to the plugin. For the
short-term I would take the safe route and compile with Java 8 as-is, not
cross-compile.
> Use `--release 8` for javac
> ---------------------------
>
> Key: SPARK-28750
> URL: https://issues.apache.org/jira/browse/SPARK-28750
> Project: Spark
> Issue Type: Sub-task
> Components: Build
> Affects Versions: 3.0.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
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