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https://issues.apache.org/jira/browse/FLINK-4560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15506752#comment-15506752
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ASF GitHub Bot commented on FLINK-4560:
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Github user shijinkui commented on the issue:
https://github.com/apache/flink/pull/2458
hi, @StephanEwen
There are much difference between JDK 6 and JDK 7+. It's better for
compatible low version JDK，but there are better performance for Scala with
Lambda support, and JDK 7 and 8 are enhanced on many features.
Now JDK7 is wide used. Give up JDK 6 compatible. It's clearly for
developer: use JDK 7+ features relieved
> enforcer java version as 1.7
> ----------------------------
>
> Key: FLINK-4560
> URL: https://issues.apache.org/jira/browse/FLINK-4560
> Project: Flink
> Issue Type: Improvement
> Reporter: shijinkui
>
> 1. maven-enforcer-plugin add java version enforce
> 2. maven-enforcer-plugin version upgrade to 1.4.1
> explicit require java version
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