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Warn if wal_level is too low when creating a publication.

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Provide a hint to users that they need to increase wal_level before
subscriptions can work.

Author: Lucas Viecelli, with some adjustments by Thomas Munro
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/CAPjy-57rn5Y9g4e5u--eSOP-7P4QrE9uOZmT2ZcUebF8qxsYhg%40mail.gmail.com
This commit is contained in:
Thomas Munro
2019-07-13 10:35:34 +12:00
parent d3751adcf1
commit b31fbe852c
5 changed files with 40 additions and 0 deletions
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8
src/backend/commands/publicationcmds.c
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@@ -232,6 +232,14 @@ CreatePublication(CreatePublicationStmt *stmt)
InvokeObjectPostCreateHook(PublicationRelationId, puboid, 0);
if (wal_level != WAL_LEVEL_LOGICAL)
{
ereport(WARNING,
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
errmsg("wal_level is insufficient to publish logical changes"),
errhint("Set wal_level to logical before creating subscriptions.")));
}
return myself;
}