Hi Evan,

This is a built-in Github Action event ‘issue_comment’ that monitors comment on 
pull requests and re-triggers the job. In the job-related .yml file there is an 
if expression to filter the comment. See the example here: 
https://github.com/apache/beam/blob/master/.github/workflows/beam_PreCommit_SQL.yml#L72


From: Evan Galpin <egal...@apache.org>
Reply to: "dev@beam.apache.org" <dev@beam.apache.org>
Date: Thursday, 24 October 2024 at 20:06
To: dev <dev@beam.apache.org>
Subject: [EXTERNAL] Question About Comment Triggers for CI

Hey folks, CI/CD question for you! What is the bot/service used that allows for 
PR authors to leave comments like Run Java PreCommit in order to retry specific 
Github Actions?  This is super valuable for maintaining velocity of PR authors 
that are not yet committers, and would otherwise not be able to re-trigger 
failed/flaky tests.  I’d like to emulate this behaviour for another Apache OSS 
project.

Thanks!
- Evan

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