RFR: 8285785: CheckCleanerBound test fails with PasswordCallback object is not released

[Xue-Lei Andrew Fan]

On Thu, 28 Apr 2022 07:01:25 GMT, Xue-Lei Andrew Fan <xuelei at openjdk.org> wrote:

> Hi,
> 
> May I have this test update reviewed?
> 
> The javax/security/auth/callback/PasswordCallback/CheckCleanerBound.java test case failed on one of the test setups.  The test runs gc in a loop and expects the GC to have garbage collected contents of a WeakHashMap. The loop runs for 10 iterations. Some delay needs to be added between each iteration to increase the chances of GC garbage collecting the instances.
> 
> Thanks,
> Xuelei

> Alternatively, the loop count could be raised by 10x. That would keep the typical running time low and still allow for a worst case.

Update: I tried to run the test 1000 times.  I still can see failure if using 10x loop count, without sleep.

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PR: https://git.openjdk.java.net/jdk/pull/8443