Update java.vendor/java.vm.vendor about corretto-8

[Maldivia]

3rd party JDKs and non-Oracle built OpenJDK distributions set Vendor to the their own name, as they are the vendor (or supplier) of those distributions. OpenJDK has always supported defining the vendor, and now also has a built script setting for it (--with-vendor-name).

As for authoritative text, the Javadoc for System::getProperties is probably the closest:
https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/System.html#getProperties()
Which specifies that "java.vendor" is the "Java Runtime Environment vendor" - which in the Corretto case would the Amazon.

In this new Java landscape, where we are likely to see more vendors applying their own set of patches on top of the openjdk source, being able to easily identify which vendor your application is running on can become important.

Some example below for other distributions:

IBM SDK 7.0 SR2 FP10:
    java.vendor = IBM Corporation
    java.vendor.url = http://www.ibm.com/
    java.vm.name = IBM J9 VM
    java.vm.vendor = IBM Corporation
    java.vm.version = 2.7

IBM SDK 8.0 SR4 FP10:
    java.vendor = IBM Corporation
    java.vendor.url = http://www.ibm.com/
    java.vm.name = IBM J9 VM
    java.vm.vendor = IBM Corporation
    java.vm.version = 2.8

Oracle OpenJDK 11.0.1:
    java.vendor = Oracle Corporation
    java.vendor.url = http://java.oracle.com/
    java.vendor.url.bug = http://bugreport.java.com/bugreport/
    java.vendor.version = 18.9
    java.vm.name = OpenJDK 64-Bit Server VM
    java.vm.vendor = Oracle Corporation
    java.vm.version = 11.0.1+13

Oracle JVM 9.0.4:
    java.vendor = Oracle Corporation
    java.vendor.url = http://java.oracle.com/
    java.vendor.url.bug = http://bugreport.java.com/bugreport/
    java.vm.name = Java HotSpot(TM) 64-Bit Server VM
    java.vm.vendor = Oracle Corporation
    java.vm.version = 9.0.4+11

Azul Zulu 11.0.1:
    java.vendor = Azul Systems, Inc.
    java.vendor.url = http://www.azulsystems.com/
    java.vendor.url.bug = http://www.azulsystems.com/support/
    java.vendor.version = Zulu11.2+3
    java.vm.name = OpenJDK 64-Bit Server VM
    java.vm.vendor = Azul Systems, Inc.
    java.vm.version = 11.0.1+13-LTS

Azul Zulu 8.0.192:
    java.vendor = Azul Systems, Inc.
    java.vendor.url = http://www.azulsystems.com/
    java.vendor.url.bug = http://www.azulsystems.com/support/
    java.vm.name = OpenJDK 64-Bit Server VM
    java.vm.vendor = Azul Systems, Inc.
    java.vm.version = 25.192-b01

AdoptOpenJDK 11 with HotSpot:
    java.vendor = AdoptOpenJDK
    java.vendor.url = https://adoptopenjdk.net/
    java.vendor.url.bug = http://bugreport.java.com/bugreport/
    java.vendor.version = AdoptOpenJDK
    java.vm.name = OpenJDK 64-Bit Server VM
    java.vm.vendor = AdoptOpenJDK
    java.vm.version = 11.0.1+13

AdoptOpenJDK 11.0.1 with OpenJ9:
    java.vendor = Eclipse OpenJ9
    java.vendor.url = http://www.eclipse.org/openj9
    java.vendor.version = AdoptOpenJDK
    java.vm.name = Eclipse OpenJ9 VM
    java.vm.vendor = Eclipse OpenJ9
    java.vm.version = openj9-0.11.0

AdoptOpenJDK 8u192 with OpenJ9:
    java.vendor = Eclipse OpenJ9
    java.vendor.url = http://www.eclipse.org/openj9
    java.vm.name = Eclipse OpenJ9 VM
    java.vm.vendor = Eclipse OpenJ9
    java.vm.version = master-61a34f6be

SapMachine 11.0.1:
    java.vendor = SAP SE
    java.vendor.url = https://sapmachine.io
    java.vendor.url.bug = https://github.com/SAP/SapMachine/issues/new
    java.vm.name = OpenJDK 64-Bit Server VM
    java.vm.vendor = SAP SE
    java.vm.version = 11.0.1+13-LTS-sapmachine-0

[davecurrie]

Thanks @Maldivia for the detailed response to this. This, along with some additional feedback our team has sought from the OpenJDK community (such as http://mail.openjdk.java.net/pipermail/core-libs-dev/2018-December/057457.html and http://mail.openjdk.java.net/pipermail/core-libs-dev/2018-December/057460.html) prompts us to re-open the issue and work on a plan.

[davecurrie]

The latest version of Corretto 8 (8u202 Release Candidate) now has the following:

java.vendor = Amazon.com Inc.
java.vendor.url = https://aws.amazon.com/corretto/
java.vendor.url.bug = https://github.com/corretto/corretto-8/issues/
java.vm.name = OpenJDK 64-Bit Server VM
java.vm.vendor = Amazon.com Inc.
java.vm.version = 25.202-b08

Thanks for the feedback

[davecurrie]

I'm assigning this to Bernd for further investigation. Thanks for the report.

[bernd-aws]

Thank you for reporting this. We looked into it and could not find a clear definition of what the values for these properties should be, or what constitutes a “vendor” in this context, nor is there a standard vendor string applied across different OpenJDK distributions. If you know an authoritative text on this, please point us at it. We will consider changing these values once we have better information on their meaning.

[aantono]

Would it make sense to include Corretto in the java.vm.name property, to properly indicate the distribution (similar to how IBM and OpenJ9 do it)?
Something like java.vm.name=Corretto OpenJDK 64-Bit Server VM?