On 2026-May-12, Baji Shaik wrote: > Root cause: > > pg_terminate_backend() causes ereport(FATAL) via ProcDiePending. > FATAL exits bypass PG_FINALLY blocks, so stop_repack_decoding_worker() > is never called. The decoding worker is left running. > > Fix: > > Register an on_proc_exit callback when the decoding worker starts.
I think a better fix for this is to use PG_ENSURE_ERROR_CLEANUP(). That way we avoid leaving callbacks in place, which would not be great if the same backend does a lot of REPACKs: after a dozen or so, it dies with FATAL: out of before_shmem_exit slots -- Álvaro Herrera Breisgau, Deutschland — https://www.EnterpriseDB.com/ "La rebeldía es la virtud original del hombre" (Arthur Schopenhauer)
