diff options
| author | Bruce Momjian | 2011-05-09 03:59:31 +0000 |
|---|---|---|
| committer | Bruce Momjian | 2011-05-09 03:59:31 +0000 |
| commit | 76e5b4c85d5d4830888044fc885b1da0d781aed0 (patch) | |
| tree | 90a8aaff329f6e3d2e5d2847032217fad4a815e5 | |
| parent | eff223ffd74eed268f35d693462969f7f75632d2 (diff) | |
Add C comment about the fact that the autovacuum limit can go backwards
by 3, but that is it OK.
| -rw-r--r-- | src/backend/postmaster/autovacuum.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c index 9fa63a4e6e..fcc912f8e3 100644 --- a/src/backend/postmaster/autovacuum.c +++ b/src/backend/postmaster/autovacuum.c @@ -1108,6 +1108,7 @@ do_start_worker(void) recentXid = ReadNewTransactionId(); xidForceLimit = recentXid - autovacuum_freeze_max_age; /* ensure it's a "normal" XID, else TransactionIdPrecedes misbehaves */ + /* this can cause the limit to go backwards by 3, but that's OK */ if (xidForceLimit < FirstNormalTransactionId) xidForceLimit -= FirstNormalTransactionId; |