[RFC PATCH 05/12] box: retrieve instance uuid before starting local recovery

[Konstantin Osipov]

* Vladimir Davydov <vdavydov.dev at gmail.com> [18/06/06 20:45]:
> In order to find out if the current instance fell too much behind its
> peers in the cluster and so needs to be rebootstrapped, we need to
> connect it to remote peers before proceeding to local recovery. The
> problem is box.cfg.replication may have an entry corresponding to the
> instance itself so before connecting we have to start listening to
> incoming connections. Since an instance is supposed to sent its uuid in
> the greeting message, we also have to initialize INSTANCE_UUID early,
> before we start local recovery. So this patch makes memtx engine
> constructor not only scan the snapshot directory, but also read the
> header of the most recent snapshot to initialize INSTANCE_UUID.

Please as usual add a similar comment to the code snippet you're
adding. One does not have to dig into history to understand the
code.

Otherwise LGTM.

-- 
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov