At Mon, 11 Oct 2021 16:03:57 +0530, Bharath Rupireddy <bharath.rupireddyforpostg...@gmail.com> wrote in > On Mon, Oct 11, 2021 at 12:41 PM Kyotaro Horiguchi > <horikyota....@gmail.com> wrote: > > (I'm not sure how the trouble happens.) ... > If some process wants to send the startup process SIGUSR1 with the > PGPROC->backendId and SendProcSignal(PGPROC->pid, XXXXX, > PGPROC->backendId) after getting the PGPROC entry from > AuxiliaryPidGetProc(), then the signal isn't sent. To understand this > issue, please use a sample patch at [1], have a standby setup, call > pg_log_backend_memory_contexts with startup process pid on the > standby, the error "could not send signal to process" is shown, see > [2].
Thanks, I understand that this doesn't happen on vanilla PG. regards. -- Kyotaro Horiguchi NTT Open Source Software Center
