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Improve autovacuum logging for aggressive and anti-wraparound runs

author Michael Paquier <michael@paquier.xyz>

2018年9月13日 22:35:39 +0000 (07:35 +0900)

committer Michael Paquier <michael@paquier.xyz>

2018年9月13日 22:35:39 +0000 (07:35 +0900)

A log message was being generated when log_min_duration is reached for
autovacuum on a given relation to indicate if it was an aggressive run,
and missed the point of mentioning if it is doing an anti-wrapround
run. The log message generated is improved so as one, both or no extra
details are added depending on the option set.

Author: Sergei Kornilov
Reviewed-by: Masahiko Sawada, Michael Paquier
Discussion: https://postgr.es/m/11587951532155118@sas1-19a94364928d.qloud-c.yandex.net

src/backend/commands/vacuumlazy.c patch | blob | blame | history

diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c

index 5649a70800db3e4ab061edfb7bec4de142d0cb80..8996d366e91157591fa7cb47285e48d91f142487 100644 (file)

--- a/src/backend/commands/vacuumlazy.c

+++ b/src/backend/commands/vacuumlazy.c

@@ -374,10 +374,20 @@ lazy_vacuum_rel(Relation onerel, int options, VacuumParams *params,

* emitting individual parts of the message when not applicable.

initStringInfo(&buf);

- if (aggressive)

- msgfmt = _("automatic aggressive vacuum of table \"%s.%s.%s\": index scans: %d\n");

+ if (params->is_wraparound)

+ {

+ if (aggressive)

+ msgfmt = _("automatic aggressive vacuum to prevent wraparound of table \"%s.%s.%s\": index scans: %d\n");

+ else

+ msgfmt = _("automatic vacuum to prevent wraparound of table \"%s.%s.%s\": index scans: %d\n");

+ }

else

- msgfmt = _("automatic vacuum of table \"%s.%s.%s\": index scans: %d\n");

+ {

+ if (aggressive)

+ msgfmt = _("automatic aggressive vacuum of table \"%s.%s.%s\": index scans: %d\n");

+ else

+ msgfmt = _("automatic vacuum of table \"%s.%s.%s\": index scans: %d\n");

+ }

appendStringInfo(&buf, msgfmt,

get_database_name(MyDatabaseId),

get_namespace_name(RelationGetNamespace(onerel)),

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