Test gc/gctests/OneeFinalizerTest checks that objects will be finalized exactly once. It started to fail because some of objects don't become finalized at all. Test triggers finalization with following code:

        System.gc();
        System.runFinalization();
        System.gc();
        System.runFinalization();
        System.gc();

Javadoc to runFinalization doesn't guarantee that all objects will be finalized after method return, so we need a reliable whitebox version of runFinalization method.

Btw insertion of one second delays makes test pass, but it would be only temporary solution.

Therefore this issue is blocked by JDK-8029480 RFE.

RULE gc/gctests/OneeFinalizerTest Exception nsk.share.TestFailure: Failed