Benjamin Marwell created SHIRO-771:
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Summary: Add OpenJDK-OpenJ9 travis builds
Key: SHIRO-771
URL: https://issues.apache.org/jira/browse/SHIRO-771
Project: Shiro
Issue Type: Improvement
Components: Documentation
Reporter: Benjamin Marwell
Fix For: 2.0.0
Different JDKs behave differently.
There are two major VM implementations, hotspot and OpenJ9 with a very
different memory layout and garbage collection.
Hotspot is widely known and one distribution (Oracle OpenJDK) is the JDK used
in jenkins. However, there are other hotspot distributors, e.g. AdoptOpenJDK
Hotspot, Amazon Corretto, Zulu, Graal and liberica (and probably others).
There are also two main OpenJ9 distributors. IBM J9 (formerly closed source)
which was open sourced as Eclipse OpenJ9. There is currently one binary
distributor of the VM, which is AdoptOpenJDK.net again.
As different distributions and VM implementations may have different defaults,
Shiro should be tested against multiple of those. For example, OpenJ9 will have
"better NPEs" enabled by default, while most hotspot distributions will not.
Also, the IllegalAccess Permissions are stricter.
The goal is to add additional travis jobs.
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