Integrated: 8313174: Create fewer predictable port clashes in management tests

[Kevin Walls]

On Wed, 26 Jul 2023 10:50:09 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

> Specifically noticed on linux-aarch64, detection of port clashes by LocateRegistry.createRegistry(port) appears "racy".
> 
> Predictable port clashes can be avoided, tests that are likely to run at the same time should not choose the same port.
> 
> Why now?  The RMI related parts are obviously fairly stable these days, as are the tests themselves.
> Our OS version/host mix for testing may have changed.  The problems I looked into were on ol8-aarch64.
> 
> It doesn't seem necessary to add complexities to the tests, or change LocateRegistry much at this point, when a simple change to the tests can avoid asking for so many port clashes.
> 
> 
> 
> test/jdk/javax/management/remote/mandatory/passwordAuthenticator/RMIPasswdAuthTest.java:            int port = 5800;  	// 5801 to 5820
> test/jdk/javax/management/remote/mandatory/passwordAuthenticator/RMIAltAuthTest.java:            int port = 5800;	// 5821 to 5840
> test/jdk/javax/management/remote/mandatory/socketFactories/RMISocketFactoriesTest.java:            int port = 5800;	// 5841 to 5860
> test/jdk/javax/management/remote/mandatory/subjectDelegation/SubjectDelegation1Test.java:            int port = 5800;	// 5861 to 5880
> test/jdk/javax/management/remote/mandatory/subjectDelegation/SubjectDelegation2Test.java:            int port = 5800;	// 5881 to 5900
> test/jdk/javax/management/remote/mandatory/subjectDelegation/SubjectDelegation3Test.java:            int port = 5800;	// 5901 to 5920

This pull request has now been integrated.

Changeset: 169b6e3c
Author:    Kevin Walls <kevinw at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/169b6e3cff8f9e0e09cdd5145c2dfe73a88519d1
Stats:     17 lines in 6 files changed: 0 ins; 0 del; 17 mod

8313174: Create fewer predictable port clashes in management tests

Reviewed-by: cjplummer, amenkov

-------------

PR: https://git.openjdk.org/jdk/pull/15039