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Mon, 31 Aug 2026 10:33:51 -0400 (EDT) From: Junio C Hamano To: Harald Nordgren Cc: Harald Nordgren via GitGitGadget , git@vger.kernel.org Subject: Re: [PATCH v2] ci: cancel stale pull request workflow runs In-Reply-To: (Harald Nordgren's message of "Mon, 31 Aug 2026 13:12:32 +0200") References: Date: Mon, 31 Aug 2026 07:33:50 -0700 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Harald Nordgren writes: >> If a user has CI enabled on their own repository, pushes a commit >> there, and opens a pull request, wouldn't GitHub Actions trigger >> two events for the same commit at the tip of the pushed branch? >> >> Before this change, both events are assigned to the same concurrency >> group (the commit object name). One waits while the other runs, and >> the skip-if-redundant logic stops the second one early without >> wasting cycles on the same commit. With this change, the >> concurrency groups for these two events are separate. Would we end >> up building and testing the same commit twice in parallel? >> >> I suspect this may not be a problem in practice given how our >> contributors use GitHub Actions in our official repositories (either >> those owned by gitgitgadget or git). They push to their own >> repositories where CI may not be enabled, so 'push' does not >> trigger. Still, I thought it better to bring this up before the >> change gets merged and wastes build cycles. > > Concurrency groups don't span repos, so I don't see a solution to that. OK, then I do not see a need for solution to begin with---it is not a problem, in other words ;-). Thanks.