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https://issues.apache.org/jira/browse/SOLR-12809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16797339#comment-16797339
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David Smiley commented on SOLR-12809:
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I like the matrix idea. And I think it's important to point out any pertinent
limitations of Solr if it relates to certain JDK versions. For example I
recall lately some HTTP2/SSL matters. And annoyingly the JavaScript
interpreter changed from JDK 7 to JDK 8 which broke some people's update
scripts if they were using that feature.
I would rather we/Solr not "recommend" any particular JDK any more than other
Java software should do so either. Assuming we know it to be compatible (see
the matrix), _people can make that decision for themselves_. They might
consider risk (newer maybe "better" but maybe bugs) or corporate standards or
supportability (pay Oracle vs not), or whatever. These are not Solr specific
concerns. If we identify a specific concern that matters to Solr we can
enumerate it as a trade-off but ultimately the choice is on the user.
> Document recommended Java/Solr combinations (JDK 11?)
> -----------------------------------------------------
>
> Key: SOLR-12809
> URL: https://issues.apache.org/jira/browse/SOLR-12809
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Erick Erickson
> Assignee: Erick Erickson
> Priority: Major
>
> JDK 8 will be EOL early next year (except for "premier support"). JDK 9, 10
> and 11 all have issues for Solr and Lucene IIUC.
> Also IIUC Oracle will start requiring commercial licenses for 11.
> This Jira is to discuss what we want to do going forward. Among the topics:
> * Skip straight to 11, skipping 9 and 10? If so how to resolve current
> issues?
> * How much emphasis on OpenJDK .vs. Oracle's version
> * What to do about dependencies that don't work (for whatever reason) with
> the version of Java we go with?
> * ???
> This may turn into an umbrella Jira with sub-tasks of course. Since JDK 11
> has had a GA release, I'd also like to have a record of where the current
> issues are to refer people to.
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