aboutsummaryrefslogtreecommitdiff
path: root/src/backend/utils/cache/inval.c
diff options
context:
space:
mode:
authorRobert Haas <rhaas@postgresql.org>2013-07-22 10:34:34 -0400
committerRobert Haas <rhaas@postgresql.org>2013-07-22 11:09:10 -0400
commitf01d1ae3a104019d6d68aeff85c4816a275130b3 (patch)
treea0fa034de5d28f5eb458bba87c6ed6e5a163bd37 /src/backend/utils/cache/inval.c
parentb3b10c39038c20457ef058c7f4e5589c28a84f1c (diff)
downloadpostgresql-f01d1ae3a104019d6d68aeff85c4816a275130b3.tar.gz
postgresql-f01d1ae3a104019d6d68aeff85c4816a275130b3.zip
Add infrastructure for mapping relfilenodes to relation OIDs.
Future patches are expected to introduce logical replication that works by decoding WAL. WAL contains relfilenodes rather than relation OIDs, so this infrastructure will be needed to find the relation OID based on WAL contents. If logical replication does not make it into this release, we probably should consider reverting this, since it will add some overhead to DDL operations that create new relations. One additional index insert per pg_class row is not a large overhead, but it's more than zero. Another way of meeting the needs of logical replication would be to the relation OID to WAL, but that would burden DML operations, not only DDL. Andres Freund, with some changes by me. Design review, in earlier versions, by Álvaro Herrera.
Diffstat (limited to 'src/backend/utils/cache/inval.c')
-rw-r--r--src/backend/utils/cache/inval.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/utils/cache/inval.c b/src/backend/utils/cache/inval.c
index 3356d0fe1e2..bfe7d787b7b 100644
--- a/src/backend/utils/cache/inval.c
+++ b/src/backend/utils/cache/inval.c
@@ -178,7 +178,7 @@ static int maxSharedInvalidMessagesArray;
*/
#define MAX_SYSCACHE_CALLBACKS 32
-#define MAX_RELCACHE_CALLBACKS 5
+#define MAX_RELCACHE_CALLBACKS 10
static struct SYSCACHECALLBACK
{