See also the corresponding SYSTEM_REQUIREMENTS.txt file of Lucene 6:
--snip-- Apache Lucene runs on Java 8 or greater. It is also recommended to always use the latest update version of your Java VM, because bugs may affect Lucene. An overview of known JVM bugs can be found on http://wiki.apache.org/lucene-java/JavaBugs --snip-- That is all we can say at this point. Once Java 9 is out we can make more statements but not at this time. Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen <http://www.thetaphi.de/> http://www.thetaphi.de eMail: [email protected] From: Uwe Schindler [mailto:[email protected]] Sent: Saturday, March 05, 2016 7:36 PM To: [email protected] Subject: RE: Java for 6.0? Hi, Java 9 is not yet released so we cannot make a statement about supporting it… Especially as the latest preview build does not work at all :). But once it is out we will add a similar statement. At the moment, Java 8 is the minimum requirement and it is also the recommended one for Lucene 6. Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen <http://www.thetaphi.de/> http://www.thetaphi.de eMail: <mailto:[email protected]> [email protected] From: Jack Krupansky [ <mailto:[email protected]> mailto:[email protected]] Sent: Saturday, March 05, 2016 7:08 PM To: Lucene-dev < <mailto:[email protected]> [email protected]> Subject: Java for 6.0? Could somebody remind me, which Java release will be recommended and which releases will be supported for the upcoming Lucene/Solr 6.0 release? I mean, will it remain the same or change from the 5.5 system requirements page: http://lucene.apache.org/core/5_5_0/SYSTEM_REQUIREMENTS.html "Apache Lucene runs of Java 7 or greater, Java 8 is verified to be compatible and may bring some performance improvements." I wasn't sure where Java 9 is these days. Some statement on it seems warranted, otherwise "7 or greater" implies that 9 is fine. -- Jack Krupansky
