database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-31 22:04:40 +03:00
Code Activity

autovacuum: handle analyze for partitioned tables

Browse Source 
Previously, autovacuum would completely ignore partitioned tables, which
is not good regarding analyze -- failing to analyze those tables means
poor plans may be chosen.  Make autovacuum aware of those tables by
propagating "changes since analyze" counts from the leaf partitions up
the partitioning hierarchy.

This also introduces necessary reloptions support for partitioned tables
(autovacuum_enabled, autovacuum_analyze_scale_factor,
autovacuum_analyze_threshold).  It's unclear how best to document this
aspect.

Author: Yuzuko Hosoya <yuzukohosoya@gmail.com>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: Tomas Vondra <tomas.vondra@enterprisedb.com>
Reviewed-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/CAKkQ508_PwVgwJyBY=0Lmkz90j8CmWNPUxgHvCUwGhMrouz6UA@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2021-04-08 01:19:36 -04:00
parent b3ee4c5038
commit 0827e8af70
7 changed files with 257 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/backend/access/common/reloptions.c
View File

@ -108,7 +108,7 @@ static relopt_bool boolRelOpts[] =
{
"autovacuum_enabled",
"Enables autovacuum in this relation",
RELOPT_KIND_HEAP | RELOPT_KIND_TOAST,
RELOPT_KIND_HEAP | RELOPT_KIND_TOAST | RELOPT_KIND_PARTITIONED,
ShareUpdateExclusiveLock
},
true
@ -246,7 +246,7 @@ static relopt_int intRelOpts[] =
{
"autovacuum_analyze_threshold",
"Minimum number of tuple inserts, updates or deletes prior to analyze",
RELOPT_KIND_HEAP,
RELOPT_KIND_HEAP | RELOPT_KIND_PARTITIONED,
ShareUpdateExclusiveLock
},
-1, 0, INT_MAX
@ -420,7 +420,7 @@ static relopt_real realRelOpts[] =
{
"autovacuum_analyze_scale_factor",
"Number of tuple inserts, updates or deletes prior to analyze as a fraction of reltuples",
RELOPT_KIND_HEAP,
RELOPT_KIND_HEAP | RELOPT_KIND_PARTITIONED,
ShareUpdateExclusiveLock
},
-1, 0.0, 100.0
@ -1962,12 +1962,11 @@ bytea *
partitioned_table_reloptions(Datum reloptions, bool validate)
{
/*
* There are no options for partitioned tables yet, but this is able to do
* some validation.
* autovacuum_enabled, autovacuum_analyze_threshold and
* autovacuum_analyze_scale_factor are supported for partitioned tables.
*/
return (bytea *) build_reloptions(reloptions, validate,
RELOPT_KIND_PARTITIONED,
0, NULL, 0);
return default_reloptions(reloptions, validate, RELOPT_KIND_PARTITIONED);
}
/*