/pgpatches/autovacuum.diff
text/x-diff
Patch
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| File | + | − |
|---|---|---|
| src/backend/postmaster/autovacuum.c | 0 | 0 |
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c new file mode 100644 index efc8e7c..244930f *** a/src/backend/postmaster/autovacuum.c --- b/src/backend/postmaster/autovacuum.c *************** do_start_worker(void) *** 1107,1114 **** */ recentXid = ReadNewTransactionId(); xidForceLimit = recentXid - autovacuum_freeze_max_age; ! /* ensure it's a "normal" XID, else TransactionIdPrecedes misbehaves */ ! if (xidForceLimit < FirstNormalTransactionId) xidForceLimit -= FirstNormalTransactionId; /* --- 1107,1120 ---- */ recentXid = ReadNewTransactionId(); xidForceLimit = recentXid - autovacuum_freeze_max_age; ! /* ! * Adjust for xids in the invalid range, less than FirstNormalTransactionId. ! * We map the xids as though the invalid range did not exist. ! * We cannot simplify the test below because of underflow ! * issues with unsigned values. ! */ ! if (xidForceLimit < FirstNormalTransactionId || /* in invalid range? */ ! recentXid < autovacuum_freeze_max_age) /* did we underflow? */ xidForceLimit -= FirstNormalTransactionId; /*