RFR: 8256156: JFR: Allow 'jfr' tool to show metadata without a recording

[Yang Yi]

On Fri, 8 Jan 2021 10:40:34 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

>> @egahlin  Hi Erik, I have updated my patch according to your review comments.
>
> You need to add a CSR as well to the bug report, where the syntax etc. is described.
> 
> https://bugs.openjdk.java.net/browse/JDK-8205517
> 
> Do you have a JIRA account?

I don't have an account. I just ask my colleague to help to create a CSR on behalf of me, it has been referred to original JDK bug.

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CSR: https://bugs.openjdk.java.net/browse/JDK-8259479

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PR: https://git.openjdk.java.net/jdk/pull/1904