From: Konstantin Osipov <kostja@tarantool.org>
To: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Cc: tarantool-patches@freelists.org
Subject: [tarantool-patches] Re: [PATCH v2 1/2] swim: make incarnation struct
Date: Sun, 23 Jun 2019 11:31:56 +0300 [thread overview]
Message-ID: <20190623083156.GB7915@atlas> (raw)
In-Reply-To: <51c439eb0ff8bb7ff46306fde45b4d8f166f3fc5.1561238125.git.v.shpilevoy@tarantool.org>
* Vladislav Shpilevoy <v.shpilevoy@tarantool.org> [19/06/23 09:42]:
> Traditional SWIM describes member version as incarnation -
> volatile monotonically growing number to refute false gossips.
> But it is not enough in the real world because of necessity to
> detect restarts and refute information from previous lifes of an
> instance.
>
> Incarnation is going to be a two-part value with persistent upper
> part and volatile lower part. This patch does preparations making
> incarnation struct instead of a number.
LGTM.
BTW, why is incarnation = uint64max for a non-existent member?
Wouldn't it be more logical to make it int64min instead?
--
Konstantin Osipov, Moscow, Russia
next prev parent reply other threads:[~2019-06-23 8:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-22 21:18 [tarantool-patches] [PATCH v2 0/2] SWIM generation Vladislav Shpilevoy
2019-06-22 21:18 ` [tarantool-patches] [PATCH v2 1/2] swim: make incarnation struct Vladislav Shpilevoy
2019-06-23 8:31 ` Konstantin Osipov [this message]
2019-06-23 17:54 ` [tarantool-patches] " Vladislav Shpilevoy
2019-06-22 21:18 ` [tarantool-patches] [PATCH v2 2/2] swim: introduce incarnation.generation Vladislav Shpilevoy
2019-06-23 9:00 ` [tarantool-patches] " Konstantin Osipov
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