RFR: 8297276: Remove thread text from Subject.current

[Xue-Lei Andrew Fan]

On Tue, 22 Nov 2022 17:11:44 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> src/java.base/share/classes/javax/security/auth/Subject.java line 329:
>> 
>>> 327:      * subject is {@code null} before the first call of {@code callAs()}.
>>> 328:      * <p>
>>> 329:      * When a new thread is created, its current subject is the same as
>> 
>> what about change from"when" to "if", in case some implementation still create a new thread?
>
> This is not about the implementation of this method, which might or might not allow the current subject to be inherited in a new thread. The spec change is telling the users of this method that such inheritance is no longer guaranteed. We are still not sure if the future implementation of this method can guarantee that, but given it's already broken now, we'd better remove this requirement. We can add if later if we can do that.

Hm, it may still apply if the current subject to be inherited in a new thread.  I fine to remove this section.  A release note and known issue may be filed to notify the behavior change and issue.

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PR: https://git.openjdk.org/jdk/pull/11292