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authorSimon Riggs <simon@2ndQuadrant.com>2013-02-02 18:55:03 +0000
committerSimon Riggs <simon@2ndQuadrant.com>2013-02-02 18:55:03 +0000
commit59f800d05866ef447e1337bc8f2c9a54063f6eba (patch)
tree3ce9499cb1d33f4574b863f7abfc756a80835868 /src
parent275a86bed8a09d372eb8e02966a847f0321aaa32 (diff)
Mark vacuum_defer_cleanup_age as PGC_POSTMASTER.
Following bug analysis of #7819 by Tom Lane
Diffstat (limited to 'src')
-rw-r--r--src/backend/utils/misc/guc.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 2483587fa3f..92ea02a5071 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -1631,7 +1631,12 @@ static struct config_int ConfigureNamesInt[] =
},
{
- {"vacuum_defer_cleanup_age", PGC_SIGHUP, WAL_REPLICATION,
+ /*
+ * Setting this to a higher value without restarting postmaster
+ * can cause various bugs in TOAST object removal, CLUSTER and
+ * possibly other places, so this must be changed only on restart.
+ */
+ {"vacuum_defer_cleanup_age", PGC_POSTMASTER, WAL_REPLICATION,
gettext_noop("Number of transactions by which VACUUM and HOT cleanup should be deferred, if any."),
NULL
},