[11u] RFR 8250928: JFR: Improve hash algorithm for stack traces

[Jaroslav Bachorík]

I have opened and fixed
https://bugs.openjdk.java.net/browse/JDK-8252754 to do the hash code
calculation consistently.

I would prefer including both parts in one backport if possible. Any thoughts?

Thanks,

-JB-

On Tue, Sep 1, 2020 at 12:57 PM Jaroslav Bachorík
<jaroslav.bachorik at datadoghq.com> wrote:
>
> On Tue, Sep 1, 2020 at 12:48 PM Aleksey Shipilev <shade at redhat.com> wrote:
> >
> > On 9/1/20 12:45 PM, Jaroslav Bachorík wrote:
> > > Perhaps, the mainline should be fixed to use the 'improved'
> > > calculation in both places first?
> >
> > Yes, that would be my guess. The backport to both 8u and 11u does not look safe until that
> > peculiarity is resolved, either by additional patch, or justification why it is fine.
>
> Yes. I totally agree. Thanks for catching this early!
>
> -JB-
>
> >
> > --
> > Thanks,
> > -Aleksey
> >