From: | Greg Nancarrow <gregn4422(at)gmail(dot)com> |
---|---|
To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, "houzj(dot)fnst(at)fujitsu(dot)com" <houzj(dot)fnst(at)fujitsu(dot)com>, "tanghy(dot)fnst(at)fujitsu(dot)com" <tanghy(dot)fnst(at)fujitsu(dot)com>, "osumi(dot)takamichi(at)fujitsu(dot)com" <osumi(dot)takamichi(at)fujitsu(dot)com>, Alexey Lesovsky <lesovsky(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Skipping logical replication transactions on subscriber side |
Date: | 2021-10-12 10:58:44 |
Message-ID: | CAJcOf-dU_AWwFdM7LC5RxiM1oC=ZtrBujk4o_6=AeeBsqXGigw@mail.gmail.com |
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On Tue, Oct 12, 2021 at 4:00 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>
> I've attached updated patches.
>
Some comments for the v16-0003 patch:
(1) doc/src/sgml/logical-replication.sgml
The output from "SELECT * FROM pg_stat_subscription_errors;" still
shows "last_failed_time" instead of "last_error_time".
doc/src/sgml/ref/alter_subscription.sgml
(2)
Suggested update (and fix typo: restrited -> restricted):
BEFORE:
+ Setting and resetting of <literal>skip_xid</literal> option is
+ restrited to superusers.
AFTER:
+ The setting and resetting of the
<literal>skip_xid</literal> option is
+ restricted to superusers.
(3)
Suggested improvement to the wording:
BEFORE:
+ incoming change or by skipping the whole transaction. This option
+ specifies transaction ID that logical replication worker skips to
+ apply. The logical replication worker skips all data modification
AFTER:
+ incoming changes or by skipping the whole transaction. This option
+ specifies the ID of the transaction whose application is to
be skipped
+ by the logical replication worker. The logical replication worker
+ skips all data modification
(4) src/backend/replication/logical/worker.c
Suggested improvement to the comment wording:
BEFORE:
+ * Stop the skipping transaction if enabled. Otherwise, commit the changes
AFTER:
+ * Stop skipping the transaction changes, if enabled. Otherwise,
commit the changes
(5) skip_xid value validation
The validation of the specified skip_xid XID value isn't great.
For example, the following value are accepted:
ALTER SUBSCRIPTION sub SET (skip_xid='123abcz');
ALTER SUBSCRIPTION sub SET (skip_xid='99$(at)*');
Regards,
Greg Nancarrow
Fujitsu Australia
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