diff options
| author | Alexander Korotkov <akorotkov@postgresql.org> | 2025-11-05 11:43:55 +0200 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2025-11-05 11:44:13 +0200 |
| commit | 447aae13b0305780e87cac7b0dd669db6fab3d9d (patch) | |
| tree | 2ba9e956343d3f85d9d91011220047b8e80d6171 /doc/src/sgml/ref/allfiles.sgml | |
| parent | 3b4e53a075ea5671b075f8fd873241179f8e64af (diff) | |
Implement WAIT FOR command
WAIT FOR is to be used on standby and specifies waiting for
the specific WAL location to be replayed. This option is useful when
the user makes some data changes on primary and needs a guarantee to see
these changes are on standby.
WAIT FOR needs to wait without any snapshot held. Otherwise, the snapshot
could prevent the replay of WAL records, implying a kind of self-deadlock.
This is why separate utility command seems appears to be the most robust
way to implement this functionality. It's not possible to implement this as
a function. Previous experience shows that stored procedures also have
limitation in this aspect.
Discussion: https://www.postgresql.org/message-id/flat/CAPpHfdsjtZLVzxjGT8rJHCYbM0D5dwkO+BBjcirozJ6nYbOW8Q@mail.gmail.com
Discussion: https://www.postgresql.org/message-id/flat/CABPTF7UNft368x-RgOXkfj475OwEbp%2BVVO-wEXz7StgjD_%3D6sw%40mail.gmail.com
Author: Kartyshov Ivan <i.kartyshov@postgrespro.ru>
Author: Alexander Korotkov <aekorotkov@gmail.com>
Author: Xuneng Zhou <xunengzhou@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Reviewed-by: Dilip Kumar <dilipbalaut@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Alexander Lakhin <exclusion@gmail.com>
Reviewed-by: Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>
Reviewed-by: Euler Taveira <euler@eulerto.com>
Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: jian he <jian.universality@gmail.com>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Reviewed-by: Xuneng Zhou <xunengzhou@gmail.com>
Diffstat (limited to 'doc/src/sgml/ref/allfiles.sgml')
| -rw-r--r-- | doc/src/sgml/ref/allfiles.sgml | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/allfiles.sgml b/doc/src/sgml/ref/allfiles.sgml index f5be638867a..e167406c744 100644 --- a/doc/src/sgml/ref/allfiles.sgml +++ b/doc/src/sgml/ref/allfiles.sgml @@ -188,6 +188,7 @@ Complete list of usable sgml source files in this directory. <!ENTITY update SYSTEM "update.sgml"> <!ENTITY vacuum SYSTEM "vacuum.sgml"> <!ENTITY values SYSTEM "values.sgml"> +<!ENTITY waitFor SYSTEM "wait_for.sgml"> <!-- applications and utilities --> <!ENTITY clusterdb SYSTEM "clusterdb.sgml"> |