Swagger issue for JAVA 11

[ncying]

FYI

[faddat]

Turning this into more of a "can we get off of Oracle Java 8 and on to the latest OpenJDK" discussion.

Judging from the title of the issue, I guess that Swagger doesn't work well with Java 11?

I don't know the Java ecosystem much at all. Would it be an issue to try to jump right to Java 14? Would we encounter breaking changes?

Thanks for getting me up to speed.

https://jdk.java.net/14/

I will continue to do research to address this and the issues mentioned in #191 . Hopefully we can find a flavor of Java that gets us out of the Oracle licensing situation, so that it won't be necessary to bundle lengthy Java setup instructions with our install and compile documentation.

[faddat]

Can you please provide more information on "Swagger issue for JAVA 11?"

Thank you.

[faddat]

So, I've confirmed that the Ubuntu 18.04 package openjdk-11-jdk does not work with VSYS.

Will try openjdk-8-jdk next.

openjdk-8-jdk works. @SheldonYS @ncying is it alright to update documentation to standardize around this? It will cut several steps out of the installer and make sure that installed systems have clean package managers.

Or, do we need to stick with Oracle?

Also, anyone know why openjdk-11-jdk doesn't work?

[faddat]

@peerchemist reports that Java 14 works but looked at some phoronix benchmarks and thinks it makes the most sense to wait to change for now, until Java 15, which is expected to boost performance.

[faddat]

Suggest that we make sdkman the norm for all versions of the tooling used to build VSYS, then we can toss this issue aside.

https://sdkman.io

Install sdkman like:

curl -s "https://get.sdkman.io" | bash

JDK 11 Not working. Perhaps GraalVM

AdoptOpenJDK8 is the only working solution.