[aarch64-port-dev ] RFR: Bulk integration shenandoah/jdk8u -> aarch64-port/jdk8u-shenandoah 2018-09-17

[Andrew Hughes]

On Wed, 19 Sep 2018 at 18:03, Aleksey Shipilev <shade at redhat.com> wrote:
>
> On 09/19/2018 06:55 PM, Andrew Hughes wrote:
> > The changes look ok to me too. Is there a reason to maintain both shenandoah/jdk8u and
> > aarch64-port/shenandoah-jdk8u, now that Shenandoah development has moved to an OpenJDK 12 base?
>
> We treat shenandoah/jdk8u as "let's push backports there and see what happens" repository: we build
> and test nightlies there, and sometimes our adopters find obvious bugs there that we don't want to
> expose to anybody else, and/or there are adopter-requested features/fixes that might degrade
> something else.
>
> Integration repository like aarch64-port/shenandoah-jdk8u has the stuff we know works fine. It is
> then open for larger testing and packaging. I think it makes more sense for 8u, because the GC
> interface is rather intrusive in 8u, and there is elevated risk for breakages for non-Shenandoah
> code. So, having the additional gateway where 8u integrations are reviewed is a plus. In 11+, almost
> all of Shenandoah code is isolated, and has much less risk to regress anything else.
>
> In other words, shenandoah/jdk8u is like jdk8u/dev, and aarch64-port/shenandoah-jdk8u is like
> jdk8u/jdk8u :) What we need to do for this to work better is to get shenandoah/jdk8u ->
> aarch64-port/shenandoah-jdk8u on a more frequent basis, so reviews stay trivial, and so that
> whatever problems found in RPMs are fixed quickly.
>
> Thanks,
> -Aleksey
>
>

Ok. It's the Shenandoah team doing the merge work so I don't have a
strong opinion either way.

I would like to see more frequent merges and ideally, much closer to
the beginning of the CPU
cycle than this (so more early August than late September in the case
of the October update).
Eyeballing something as big as this one is pretty unwieldy and I only
considered the shared changes.

Thanks,
-- 
Andrew :)

Senior Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

Web Site: http://fuseyism.com
Twitter: https://twitter.com/gnu_andrew_java
PGP Key: ed25519/0xCFDA0F9B35964222 (hkp://keys.gnupg.net)
Fingerprint = 5132 579D D154 0ED2 3E04  C5A0 CFDA 0F9B 3596 4222