[jdk21] RFR: 8309959: JFR: Display N/A for missing data amount

[Frederic Thevenet]

On Thu, 22 Jun 2023 14:55:51 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

>> Hi!
>> 
>> This pull request contains a backport of commit [9872a141](https://github.com/openjdk/jdk/commit/9872a14192ce3964b934c19ab685342ffd396986) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
>> 
>> The commit being backported was authored by Erik Gahlin on 14 Jun 2023 and was reviewed by Markus Grönlund and Thomas Stuefe.
>> 
>> This is a follow-up to [JDK-8309550](https://github.com/openjdk/jdk17u-dev/pull/1438) which was integrated *before* RDP1, so backporting this one also as a matter of consistency.
>> 
>> Thanks!
>
> Marked as reviewed by egahlin (Reviewer).

Hello @egahlin 
I am unsure if I need to request approval by setting a `jdk21-fix-request` label on the JBS issue before integrating this into a stabilization repository like I would for an update repo; can you, or anybody else, please advise? 
Thanks!

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PR Comment: https://git.openjdk.org/jdk21/pull/56#issuecomment-1602876664