Fix full-table-vacuum request mechanism for MultiXactIds While autovacuum dutifully launched anti-multixact-wraparound vacuums when the multixact "age" was reached, the vacuum code was not aware that it needed to make them be full table vacuums. As the resulting partial-table vacuums aren't capable of actually increasing relminmxid, autovacuum continued to launch anti-wraparound vacuums that didn't have the intended effect, until age of relfrozenxid caused the vacuum to finally be a full table one via vacuum_freeze_table_age.
To fix, introduce logic for multixacts similar to that for plain TransactionIds, using the same GUCs. Backpatch to 9.3, where permanent MultiXactIds were introduced. Andres Freund, some cleanup by Álvaro Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/f54106f77e6d71cbb3fa0924095e5142341fde2b Modified Files -------------- src/backend/access/transam/multixact.c | 15 ++++++++ src/backend/commands/cluster.c | 13 ++++--- src/backend/commands/vacuum.c | 62 +++++++++++++++++++++++--------- src/backend/commands/vacuumlazy.c | 18 +++++++--- src/include/access/multixact.h | 2 ++ src/include/commands/vacuum.h | 5 +-- 6 files changed, 87 insertions(+), 28 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
