MLeap compatibility with Java 11

[kothari-pk]

MLeap currently supports Scala 2.11 and Java 8. Once there is Scala 2.12 support #360 . Can you please also add Java 11 support?

[rarbabi]

@ancasarb is there any timeline for the java 11 support? and is the sun.unsafe library the only reason mleap is only supported in Java 8?

[ancasarb]

I believe that Spark 2.4.x is using Java 8, so once Spark 3 is released, we can take a look at upgrading mleap as well.

[falkoner]

Hi, Spark 3.0.1 released on Sep 08, 2020. Any plans to make MLeap working on JDK 11 in this context?

[anu-srivastava]

Hi All, Is there any update on when MLeap will be supported on JDK11?

[jsleight]

spark v3 remains the largest blocker. See #751 for some tentative plans on that upgrade

[mathfish]

Since Spark 3 is now supported, is the effort for Java 11+ support moving forward?

[jsleight]

To my knowledge no one has started working on a PR, though we'd be glad to help review and ship one 😄

fwiw, at Yelp we have some Java 11 JVMs (and iirc a Java 15 too) running mleap runtime and haven't observed any issues. Haven't tried a Java 11 JVM for mleap's spark components.

[mathfish]

Ok, thanks. I actually was thinking more along the lines of Java 15 (or even Java 17 LTS). And I wouldn't mind helping up-rev support to Java 15+ but pretty sure I couldn't do it alone.

[jsleight]

I think Java 11 is as far as mleap can go for now since that is spark's latest supported version. Though I would expect that spark (and probably many other things) will add support for Java 17 LTS now that it is out.