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pgsql: BRIN autosummarization may need a snapshot 7+ messages / 1 participants [nested] [flat]
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ REL_17_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/f4b68b0336bd3ff91f2ee131519b1efe1cb6fc39 Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 37 ++++++++++++++++++++++++++++++--- 2 files changed, 36 insertions(+), 3 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/a95e3d84c0e0ffd1e27c185dd69d053e43f2f8b5 Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 46 ++++++++++++++++++++++++++++++--- 2 files changed, 44 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ REL_13_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/3c7b47974ec7332a2bb98cf51888dd4a4f367506 Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 39 +++++++++++++++++++++++++++++---- 2 files changed, 37 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ REL_14_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/f0ad417161977d034e3d5845d043c44bef3d1f8a Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 39 +++++++++++++++++++++++++++++---- 2 files changed, 37 insertions(+), 4 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/419ffde235469bd7459bd52b7eeed76a7520853a Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 37 ++++++++++++++++++++++++++++++--- 2 files changed, 36 insertions(+), 3 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ REL_15_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/23ddadf6835e86a1a3205b2e433a35f7ad139ea6 Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 37 ++++++++++++++++++++++++++++++--- 2 files changed, 36 insertions(+), 3 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
* pgsql: BRIN autosummarization may need a snapshot @ 2025-11-04 12:24 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 7+ messages in thread From: Álvaro Herrera @ 2025-11-04 12:24 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org BRIN autosummarization may need a snapshot It's possible to define BRIN indexes on functions that require a snapshot to run, but the autosummarization feature introduced by commit 7526e10224f0 fails to provide one. This causes autovacuum to leave a BRIN placeholder tuple behind after a failed work-item execution, making such indexes less efficient. Repair by obtaining a snapshot prior to running the task, and add a test to verify this behavior. Author: Álvaro Herrera <alvherre@kurilemu.de> Reported-by: Giovanni Fabris <giovanni.fabris@icon.it> Reported-by: Arthur Nascimento <tureba@gmail.com> Backpatch-through: 13 Discussion: https://postgr.es/m/202511031106.h4fwyuyui6fz@alvherre.pgsql Branch ------ REL_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/6ef33c8051ddfcfff32e5c788e8e7e2f5b10669b Modified Files -------------- src/backend/postmaster/autovacuum.c | 2 ++ src/test/modules/brin/t/01_workitems.pl | 37 ++++++++++++++++++++++++++++++--- 2 files changed, 36 insertions(+), 3 deletions(-) ^ permalink raw reply [nested|flat] 7+ messages in thread
end of thread, other threads:[~2025-11-04 12:24 UTC | newest] Thread overview: 7+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de> 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de> 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de> 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de> 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de> 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de> 2025-11-04 12:24 pgsql: BRIN autosummarization may need a snapshot Álvaro Herrera <alvherre@kurilemu.de>
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