8u252 Rampdown & JFR

[Andrew Haley]

On 2/24/20 5:42 PM, Andrew Hughes wrote:
> First of all, a reminder that 8u is due to rampdown for 8u252 after this
> Wednesday. Please make sure you either get any patches for that release
> into 8u-dev over the next couple of days, or start targetting them for
> 8u262 (the July release) instead. Feel free to ping me if there's a fix
> that's been missed and needs review/approval to make it in.
>
> Thanks to Andrew Dinn for his comprehensive review of the JFR work. To
> simplify the merge process for this, I propose to integrate it into this
> rampdown process and the next as follows:
>
> 1. 8u & 8u-dev will be frozen for rampdown after Wednesday. Once the
> appropriate changes are made in the bug database to switch 8u-dev to
> openjdk8u262, I'll merge the JFR changes there before we open for work
> on 8u262-b01.

OK.

> 2. JFR is currently enabled by default in the incubator. Once integrated
> into 8u-dev, I'll disable it by default for the 8u262 release. This will
> allow the code to be tested and fixed in mainline, but allow some grace
> before it becomes part of a default build.

I'm not entirely convinced by the need to disable it by default
because everyone involved in this process will probably enable it in
their builds. However, I have no huge objection if that's the way
people want to go.  I'm not really convinced it's much safer, but it's
no big deal either way.

> 3. At rampdown for 8u262 (expected to be the end of May), I'll enable
> JFR by default in 8u-dev for 8u272.
>
> So, in short:
>
> 8u252, 2020-04-14: Ramping down now, ALPN + RSA-PSS changes for 8u M3
> 8u262, 2020-07-14: JFR integrated, but disabled by default
> 8u272, 2020-10-20: JFR integrated and enabled by default
>
> Comments and objections welcome.

OK.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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