Tarantool development patches archive
 help / color / mirror / Atom feed
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)
> 

      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]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201022085529.GB630047@hpalx \
    --to=avtikhon@tarantool.org \
    --cc=tarantool-patches@dev.tarantool.org \
    --cc=v.shpilevoy@tarantool.org \
    --subject='Re: [Tarantool-patches] [PATCH 0/3] Raft on leader election recovery restart' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox