diff options
Diffstat (limited to 'src/backend/commands/vacuumlazy.c')
| -rw-r--r-- | src/backend/commands/vacuumlazy.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c index cf8337b9e5d..b197b45c127 100644 --- a/src/backend/commands/vacuumlazy.c +++ b/src/backend/commands/vacuumlazy.c @@ -158,6 +158,7 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt, TransactionId freezeTableLimit; BlockNumber new_rel_pages; double new_rel_tuples; + BlockNumber new_rel_allvisible; TransactionId new_frozen_xid; /* measure elapsed time iff autovacuum logging requires it */ @@ -222,6 +223,10 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt, * density") with nonzero relpages and reltuples=0 (which means "zero * tuple density") unless there's some actual evidence for the latter. * + * We do update relallvisible even in the corner case, since if the + * table is all-visible we'd definitely like to know that. But clamp + * the value to be not more than what we're setting relpages to. + * * Also, don't change relfrozenxid if we skipped any pages, since then * we don't know for certain that all tuples have a newer xmin. */ @@ -233,12 +238,18 @@ lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt, new_rel_tuples = vacrelstats->old_rel_tuples; } + new_rel_allvisible = visibilitymap_count(onerel); + if (new_rel_allvisible > new_rel_pages) + new_rel_allvisible = new_rel_pages; + new_frozen_xid = FreezeLimit; if (vacrelstats->scanned_pages < vacrelstats->rel_pages) new_frozen_xid = InvalidTransactionId; vac_update_relstats(onerel, - new_rel_pages, new_rel_tuples, + new_rel_pages, + new_rel_tuples, + new_rel_allvisible, vacrelstats->hasindex, new_frozen_xid); @@ -1063,8 +1074,11 @@ lazy_cleanup_index(Relation indrel, */ if (!stats->estimated_count) vac_update_relstats(indrel, - stats->num_pages, stats->num_index_tuples, - false, InvalidTransactionId); + stats->num_pages, + stats->num_index_tuples, + 0, + false, + InvalidTransactionId); ereport(elevel, (errmsg("index \"%s\" now contains %.0f row versions in %u pages", |