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https://issues.apache.org/jira/browse/LUCENE-6722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14659933#comment-14659933
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Shalin Shekhar Mangar commented on LUCENE-6722:
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bq. we should not move the 5.x branch to Java 8 a this point. The differences
between trunk and 5.x are not so big, so we can instead just switch to Lucene 6
aka Trunk. Backporting all the Java 8 changes back to branch5x is a lot of
work, because you have to pick lots of commits and backport them again.
Backporting Java 8 changes is a lot of work, sure, but I am happy to help. You
give a good argument for releasing Trunk as Lucene 6 and I don't disagree with
it but it sounds like it isn't ready.
Merge conflicts or even language features aren't necessarily my reasons for
proposing this move. I gave my reasons in the description of the issue out of
which #3 is the most important to me.
So, here's what I propose. If you get to it first then you can release trunk as
Lucene 6 either next year or whenever. If I get to it first and the consensus
is that trunk isn't ready to be released, I'll copy over branch_5x to
branch_6x, backport Java 8 support and release version 6. I am myself a month
or two away from needing Jetty 9.3.x.
> Java 8 as the minimum supported JVM version for branch_5x
> ---------------------------------------------------------
>
> Key: LUCENE-6722
> URL: https://issues.apache.org/jira/browse/LUCENE-6722
> Project: Lucene - Core
> Issue Type: Wish
> Reporter: Shalin Shekhar Mangar
> Priority: Blocker
> Fix For: 5.4
>
>
> Require Java 8 as the minimum supported JVM version for branch_5x.
> # Java 7 is already EOL'ed
> # Trunk is already at Java8
> # Important Solr components such as Jetty 9.3.x already require Java 8
> # Nashorn Javascript engine available in Java 8 is just so much faster and we
> may see more usage of JS inside Solr (SOLR-7576 etc.)
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