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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-16219) [JDK8] Set minimum version of Hadoop 2 to JDK 8
Date Fri, 29 Mar 2019 00:07:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-16219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16804465#comment-16804465
] 

Steve Loughran commented on HADOOP-16219:
-----------------------------------------

>  just to be clear, this flies directly in the face of our compatibility guidelines
by being an incompatible change in a minor version release, right?

well it would be, if we didn't explicitly call out JVM EOL as something that can force an
update

https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/Compatibility.html#Policies

> [JDK8] Set minimum version of Hadoop 2 to JDK 8
> -----------------------------------------------
>
>                 Key: HADOOP-16219
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16219
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build
>    Affects Versions: 2.10.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Major
>         Attachments: HADOOP-16219-branch-2-001.patch
>
>
> Java 7 is long EOL; having branch-2 require it is simply making the release process a
pain (we aren't building, testing, or releasing on java 7 JVMs any more, are we?). 
> Staying on java 7 complicates backporting, JAR updates for CVEs (hello Guava!) &c
are becoming impossible.
> Proposed: increment javac.version = 1.8



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