Tarantool development patches archive
 help / color / mirror / Atom feed
From: Vladislav Shpilevoy via Tarantool-patches <tarantool-patches@dev.tarantool.org>
To: tarantool-patches@dev.tarantool.org, gorcunov@gmail.com,
	sergepetrenko@tarantool.org
Subject: [Tarantool-patches] [PATCH 07/13] txn: change limbo rollback check in the trigger
Date: Fri, 11 Jun 2021 23:56:15 +0200
Message-ID: <f94a9342f2d1ee8b1342f92a569d9b7f5b357cb9.1623448465.git.v.shpilevoy@tarantool.org> (raw)
In-Reply-To: <cover.1623448465.git.v.shpilevoy@tarantool.org>

A transaction on rollback used to check if it was already rolled
back inside of the limbo by looking at its signature as

    signature != TXN_SIGNATURE_ROLLBACK

It meant the transaction is already completed.
TXN_SIGNATURE_ROLLBACK was used as a default value of the
signature. Therefore if it is not default, it is completed.

This is going to break if normal (not synchronous) transactions
would have more rollback codes except just TXN_SIGNATURE_ROLLBACK.
Also treatment of TXN_SIGNATURE_ROLLBACK as a default value looks
confusing.

Next patches are going to rework the codes and render the
assumptions above incorrect.

This patch makes the transaction use a correct way to check
whether it is in the limbo still - look at TXN_WAIT_SYNC flag. It
is set for all txns in the limbo and is not set for all the
others.

Part of #6027
---
 src/box/txn.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/box/txn.c b/src/box/txn.c
index ac11127d3..2c889a31a 100644
--- a/src/box/txn.c
+++ b/src/box/txn.c
@@ -773,7 +773,7 @@ txn_limbo_on_rollback(struct trigger *trig, void *event)
 	(void) event;
 	struct txn *txn = (struct txn *) event;
 	/* Check whether limbo has performed the cleanup. */
-	if (txn->signature != TXN_SIGNATURE_ROLLBACK)
+	if (!txn_has_flag(txn, TXN_WAIT_SYNC))
 		return 0;
 	struct txn_limbo_entry *entry = (struct txn_limbo_entry *) trig->data;
 	txn_limbo_abort(&txn_limbo, entry);
-- 
2.24.3 (Apple Git-128)


  parent reply	other threads:[~2021-06-11 22:02 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-11 21:56 [Tarantool-patches] [PATCH 00/13] Applier rollback reason Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 01/13] error: introduce ER_CASCADE_ROLLBACK Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 10/13] txn: install proper diag errors on txn fail Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 11/13] wal: introduce JOURNAL_ENTRY_ERR_CASCADE Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 12/13] txn: introduce TXN_SIGNATURE_ABORT Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 13/13] txn: stop TXN_SIGNATURE_ABORT override Vladislav Shpilevoy via Tarantool-patches
2021-06-15 13:44   ` Serge Petrenko via Tarantool-patches
2021-06-15 19:34     ` Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 02/13] test: remove replica-applier-rollback.lua Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 03/13] journal: make journal_write() set diag on error Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 04/13] wal: refactor wal_write_to_disk() Vladislav Shpilevoy via Tarantool-patches
2021-06-15 20:46   ` Cyrill Gorcunov via Tarantool-patches
2021-06-16  6:22     ` Vladislav Shpilevoy via Tarantool-patches
2021-06-16  8:02       ` Cyrill Gorcunov via Tarantool-patches
2021-06-16 23:32         ` Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 05/13] diag: introduce diag_set_detailed() Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 06/13] wal: encapsulate ER_WAL_IO Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` Vladislav Shpilevoy via Tarantool-patches [this message]
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 08/13] journal: introduce proper error codes Vladislav Shpilevoy via Tarantool-patches
2021-06-11 21:56 ` [Tarantool-patches] [PATCH 09/13] txn: assert after WAL write that txn is not done Vladislav Shpilevoy via Tarantool-patches
2021-06-15 13:43 ` [Tarantool-patches] [PATCH 00/13] Applier rollback reason Serge Petrenko via Tarantool-patches
2021-06-16 23:32 ` Vladislav Shpilevoy via Tarantool-patches

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=f94a9342f2d1ee8b1342f92a569d9b7f5b357cb9.1623448465.git.v.shpilevoy@tarantool.org \
    --to=tarantool-patches@dev.tarantool.org \
    --cc=gorcunov@gmail.com \
    --cc=sergepetrenko@tarantool.org \
    --cc=v.shpilevoy@tarantool.org \
    /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

Tarantool development patches archive

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://lists.tarantool.org/tarantool-patches/0 tarantool-patches/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 tarantool-patches tarantool-patches/ https://lists.tarantool.org/tarantool-patches \
		tarantool-patches@dev.tarantool.org.
	public-inbox-index tarantool-patches

Example config snippet for mirrors.


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git