RFR: JDK-8289917: Metadata for regionsRefilled of G1EvacuationStatistics event is wrong

[Ralf Schmelter]

On Mon, 11 Jul 2022 11:14:25 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> This changes the type and description of the regionsRefilled entry.
>
> src/hotspot/share/jfr/metadata/metadata.xml line 416:
> 
>> 414:     <Field type="ulong" contentType="bytes" name="undoWaste" label="Undo Wasted" description="Total memory wasted due to allocation undo within PLABs" />
>> 415:     <Field type="ulong" contentType="bytes" name="regionEndWaste" label="Region End Wasted" description="Total memory wasted at the end of regions due to refill" />
>> 416:     <Field type="uint" name="regionsRefilled" label="Region Refills" description="Number of regions refilled" />
> 
> Thanks for noticing. Maybe keep a `contentType="count"` though?

I've changed the metadata analog to the numberOfRegions field of the G1HeapSummary event, which doesn't provide a content type. I can not find a count-like value which has a content type at all.

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PR: https://git.openjdk.org/jdk/pull/9448