From: Konstantin Osipov <kostja.osipov@gmail.com>
To: Nikita Pettik <korablev@tarantool.org>
Cc: tarantool-patches@dev.tarantool.org, v.shpilevoy@tarantool.org
Subject: Re: [Tarantool-patches] [PATCH v2 12/16] box: increment schema_version on ddl operations
Date: Wed, 4 Dec 2019 15:03:37 +0300 [thread overview]
Message-ID: <20191204120337.GN6592@atlas> (raw)
In-Reply-To: <005fe990f2add1906bd106356a6c16efa4f027a3.1574277369.git.korablev@tarantool.org>
* Nikita Pettik <korablev@tarantool.org> [19/11/21 10:00]:
> Some DDL operations such as SQL trigger alter, check and foreign
> constraint alter don't result in schema version change. On the other
> hand, we are going to rely on schema version to determine expired
> prepared statements: for instance, if FK constraint has been created
> after DML statement preparation, the latter may ignore FK constraint
> (instead of proper "statement has expired" error). Let's fix it and
> account schema change on each DDL operation.
This is very crude:
- I can't imagine that changing a trigger affects any existing
statement. It will have its own vdbe, and it doesn't change
table schema.
Constraints need more thinking, but the idea is the same:
not all schema changes are created equal.
- flushing entire cache on any such change is a huge inefficiency.
It was not an issue before, but time has come to introduce
per-object versioning, in addition to global versioning.
This is subject for future work.
So lgtm.
--
Konstantin Osipov, Moscow, Russia
next prev parent reply other threads:[~2019-12-04 12:03 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-20 21:27 [Tarantool-patches] [PATCH v2 00/16] sql: prepared statements Nikita Pettik
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 01/16] sql: remove sql_prepare_v2() Nikita Pettik
2019-12-04 11:36 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 02/16] sql: refactor sql_prepare() and sqlPrepare() Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-04 11:36 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 03/16] sql: move sql_prepare() declaration to box/execute.h Nikita Pettik
2019-12-04 11:37 ` Konstantin Osipov
2019-12-05 13:32 ` Nikita Pettik
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 04/16] sql: rename sqlPrepare() to sql_compile() Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-13 13:49 ` Nikita Pettik
2019-12-04 11:39 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 05/16] sql: move sql_finalize() to execute.h Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-04 11:39 ` Konstantin Osipov
2019-12-13 13:49 ` Nikita Pettik
2019-12-04 11:40 ` Konstantin Osipov
2019-12-05 13:37 ` Nikita Pettik
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 06/16] port: increase padding of struct port Nikita Pettik
2019-12-04 11:42 ` Konstantin Osipov
2019-12-13 13:54 ` Nikita Pettik
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 07/16] port: add dump format and request type to port_sql Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-13 13:55 ` Nikita Pettik
2019-12-04 11:52 ` Konstantin Osipov
2019-12-13 13:53 ` Nikita Pettik
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 08/16] sql: resurrect sql_bind_parameter_count() function Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-04 11:54 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 09/16] sql: resurrect sql_bind_parameter_name() Nikita Pettik
2019-12-04 11:55 ` Konstantin Osipov
2019-12-04 11:55 ` Konstantin Osipov
2019-12-13 13:55 ` Nikita Pettik
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 10/16] sql: add sql_stmt_schema_version() Nikita Pettik
2019-12-04 11:57 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 11/16] sql: introduce sql_stmt_sizeof() function Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-13 13:56 ` Nikita Pettik
2019-12-04 11:59 ` Konstantin Osipov
2019-12-13 13:56 ` Nikita Pettik
2019-12-13 14:15 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 12/16] box: increment schema_version on ddl operations Nikita Pettik
2019-12-04 12:03 ` Konstantin Osipov [this message]
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 13/16] sql: introduce sql_stmt_query_str() method Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-04 12:04 ` Konstantin Osipov
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 14/16] sql: introduce cache for prepared statemets Nikita Pettik
2019-12-03 22:51 ` Vladislav Shpilevoy
2019-12-04 12:11 ` Konstantin Osipov
2019-12-17 14:43 ` Kirill Yukhin
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 15/16] box: introduce prepared statements Nikita Pettik
2019-12-04 12:13 ` Konstantin Osipov
2019-12-06 23:18 ` Vladislav Shpilevoy
2019-11-20 21:28 ` [Tarantool-patches] [PATCH v2 16/16] netbox: " Nikita Pettik
2019-12-06 23:18 ` Vladislav Shpilevoy
2019-12-03 22:51 ` [Tarantool-patches] [PATCH v2 00/16] sql: " Vladislav Shpilevoy
2019-12-17 15:58 ` Georgy Kirichenko
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