Mention pg_upgrade sets autovacuum_freeze_max_age to maximum.

diff --git a/contrib/pg_upgrade/server.c b/contrib/pg_upgrade/server.c
index 9331667b8b7e29fc0ceb7089cad815c40c399f48..022f69742e5c1db2e9dd652d274a2134c0121164 100644 (file)
--- a/contrib/pg_upgrade/server.c
+++ b/contrib/pg_upgrade/server.c
@@ -172,8 +172,8 @@ start_postmaster(ClusterInfo *cluster, bool quiet)
     *
     * Using autovacuum=off disables cleanup vacuum and analyze, but
     * freeze vacuums can still happen, so we set
-    * autovacuum_freeze_max_age very high.  We assume all datfrozenxid and
-    * relfrozen values are less than a gap of 2000000000 from the current
+    * autovacuum_freeze_max_age to its maximum.  We assume all datfrozenxid
+    * and relfrozen values are less than a gap of 2000000000 from the current
     * xid counter, so autovacuum will not touch them.
     */ 
    snprintf(cmd, sizeof(cmd),