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https://issues.apache.org/jira/browse/SOLR-12809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16810338#comment-16810338
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Jan Høydahl commented on SOLR-12809:
------------------------------------

Feels much better. I took a stab as well and uploaded a new patch and a new 
[PDF|^SolrSystemRequirements.pdf]. It is just above 2 pages now. My edits:
 * Remove redundant mention of supported OS
 * Under "Sources for Java", added this sentence: "Some distributions are free, 
others have a cost, some come with security patches and support, others do not. 
We recommend you read ...", so that we mention this fact on the page without 
going into all the details.
 * Removed paragraph "Lucene and Solr testing" which is anyway repeated in the 
next paragraph "How we test", which I renamed "How we test Solr/Lucene"
 * All the sub chapters below level-3 heading "Released Lucene/Solr and Java 
Versions", for the various versions, had also level-3. I moved them to level-4.

> 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
>         Attachments: SOLR-12809.patch, SOLR-12809.patch, SOLR-12809.patch, 
> SolrSystemRequirements.pdf, SolrSystemRequirements.pdf, 
> SolrSystemRequirements.pdf
>
>
> 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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