From: "Alexander V. Tikhonov" <avtikhon@tarantool.org>
To: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Cc: tarantool-patches@dev.tarantool.org
Subject: Re: [Tarantool-patches] [PATCH 0/3] Raft on leader election recovery restart
Date: Thu, 22 Oct 2020 11:55:29 +0300 [thread overview]
Message-ID: <20201022085529.GB630047@hpalx> (raw)
In-Reply-To: <cover.1602954690.git.v.shpilevoy@tarantool.org>
Hi Vlad, thanks for the patchset. After your removed one of the patch
from it test began to pass [1]. No new degradations found. Patchset
LGTM.
[1] - https://gitlab.com/tarantool/tarantool/-/pipelines/206144990
On Sat, Oct 17, 2020 at 07:17:54PM +0200, Vladislav Shpilevoy wrote:
> There were 2 issues with the relay restarting recovery cursor when the node is
> elected as a leader. Fixed in the last 2 commits. First was about local LSN not
> being set, second about GC not being propagated.
>
> The first patch is not related to the bugs above directly. Just was found while
> working on this. In theory without the first patch we can get flakiness into
> the testes changed in this commit, but only if a replication connection will
> break without a reason.
>
> Additionally, the new test - gh-5433-election-restart-recovery - hangs on my
> machine when I start tens of it. All workers, after executing it several times,
> hang. But!!! not in something related to the raft - they hang in the first
> box.snapshot(), where the election is not even enabled yet. From some debug
> prints I see it hangs somewhere in engine_being_checkpoint(), and consumes
> ~80% of the CPU. But it may be just a consequence of the corrupted memory on
> Mac, due to libeio being broken. Don't know what to do with that now.
>
> Branch: http://github.com/tarantool/tarantool/tree/gerold103/gh-5433-raft-leader-recovery-restart
> Issue: https://github.com/tarantool/tarantool/issues/5433
>
> Vladislav Shpilevoy (3):
> raft: send state to new subscribers if Raft worked
> raft: use local LSN in relay recovery restart
> raft: don't drop GC when restart relay recovery
>
> src/box/box.cc | 14 +-
> src/box/raft.h | 10 +
> src/box/relay.cc | 22 ++-
> .../gh-5426-election-on-off.result | 59 ++++--
> .../gh-5426-election-on-off.test.lua | 26 ++-
> .../gh-5433-election-restart-recovery.result | 174 ++++++++++++++++++
> ...gh-5433-election-restart-recovery.test.lua | 87 +++++++++
> test/replication/suite.cfg | 1 +
> 8 files changed, 367 insertions(+), 26 deletions(-)
> create mode 100644 test/replication/gh-5433-election-restart-recovery.result
> create mode 100644 test/replication/gh-5433-election-restart-recovery.test.lua
>
> --
> 2.21.1 (Apple Git-122.3)
>
prev parent reply other threads:[~2020-10-22 8:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-17 17:17 Vladislav Shpilevoy
2020-10-17 17:17 ` [Tarantool-patches] [PATCH 1/3] raft: send state to new subscribers if Raft worked Vladislav Shpilevoy
2020-10-20 20:43 ` Vladislav Shpilevoy
2020-10-21 11:41 ` Serge Petrenko
2020-10-21 21:41 ` Vladislav Shpilevoy
2020-10-22 8:53 ` Alexander V. Tikhonov
2020-10-17 17:17 ` [Tarantool-patches] [PATCH 2/3] raft: use local LSN in relay recovery restart Vladislav Shpilevoy
2020-10-17 17:17 ` [Tarantool-patches] [PATCH 3/3] raft: don't drop GC when restart relay recovery Vladislav Shpilevoy
2020-10-19 9:36 ` [Tarantool-patches] [PATCH 0/3] Raft on leader election recovery restart Serge Petrenko
2020-10-19 20:26 ` Vladislav Shpilevoy
2020-10-20 8:18 ` Serge Petrenko
2020-10-22 8:55 ` Alexander V. Tikhonov [this message]
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