#9986 WIP: propagate termination signals to plugin subprocesses Pull request opened by edgarrmondragon on <!date^1777683216^{date_short}|2026-05-02T00:53:36Z> Description Checklist • I have read the contribution guide Was generative AI tooling used to co-author this PR? • Yes (please specify the tool below) Related Issues • Closes #9981 Summary by Sourcery Propagate termination signals to job and plugin subprocess execution so SIGTERM and SIGINT are handled consistently and jobs exit with the correct status. Bug Fixes: • Ensure SIGTERM cancels running jobs and exits with the conventional 143 status instead of relying on a synchronous signal handler. • Avoid performing duplicate or inappropriate graceful shutdown when cancellations are caused by SIGTERM or user SIGINT, relying on subprocess signal delivery instead. Enhancements: • Introduce asynchronous SIGTERM handling integrated with the event loop and job heartbeat lifecycle. • Track whether SIGINT was received during job execution so downstream cancellation handling can distinguish user interrupts from timeouts. • Ensure extract-load blocks perform a graceful terminate on SIGTERM-triggered cancellation during startup. meltano/meltano