> 46ebdfe164 will interrupt the leaders sleep every time a parallel workers > reports > progress, and we currently don't handle interrupts by restarting the sleep > with > the remaining time. nanosleep does provide the ability to restart with the > remaining > time [1], but I don't think it's worth the effort to ensure more accurate > vacuum delays for the leader process.
After discussing offline with Bertrand, it may be better to have a solution to deal with the interrupts and allows the sleep to continue to completion. This will simplify this patch and will be useful for other cases in which parallel workers need to send a message to the leader. This is the thread [1] for that discussion. [1] https://www.postgresql.org/message-id/01000190606e3d2a-116ead16-84d2-4449-8d18-5053da66b1f4-000000%40email.amazonses.com Regards, Sami
