[Tarantool-patches] [RFC] gc/xlog: delay xlog cleanup until relays are subscribed

[Konstantin Osipov]

* Cyrill Gorcunov <gorcunov at gmail.com> [21/03/18 10:42]:
> Good point, thanks! Kostya, lets clarify some moments:
> 
> 1) We introduce "wal_keep_logs" option which defines
>    a timeout to kick the cleanup fiber.
> 2) If node is anonymous replica we simply ignore this
>    option.
> 3) If this option is set then we have a few subcases:
>    a) The `_cluster` space is not empty thus thus once
>       all replicas are subscribed _before_ the timeout
>       expired we trigger the cleanup fiber since it is
>       safe to process;
>    b) If replicas are not connected and timeout is
>       expired we kick the cleanup fiber;

I mean this.

> Or you mean to always conside "wal_keep_logs" option
> and never trigger the cleanup until it get expired?

No.

-- 
Konstantin Osipov, Moscow, Russia