On 28 June 2016 at 08:28, Akash Agrawal <aagra...@ncsu.edu> wrote: > I've handled SIGTERM signal. pg_terminate_backend send signals (SIGTERM) > to backend processes identified by process ID. And also, after this call I > am able to track in my logs that the background worker gets terminated. > > Yet, I am only able to register first 8 background workers. I am using > select worker_spi1_launch(1) to launch it every time. This is why I guess > there is some metadata maintained which has got to be deleted. >
(Please reply below other posts, not above) The bgworker API currently offers no way to enumerate bgworkers or unregister them from the outside. The only way to unregister a dynamic bgworker is to: * proc_exit(0) from within the worker; or * register it with BGW_NO_RESTART so it doesn't auto-restart in the first place. This is a deficiency in the bgworker API, but there are workarounds in place and other things are more important for now. Just make your your workers proc_exit(0) on SIGTERM or don't register them as auto-restarting. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
