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Mention pg_upgrade sets autovacuum_freeze_max_age to maximum.

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This commit is contained in:
Bruce Momjian 2011-03-30 17:45:54 -04:00
parent d609b08ead
commit da3418cea9
1 changed files with 2 additions and 2 deletions
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4
contrib/pg_upgrade/server.c
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@ -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),