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authorSimon Riggs <simon@2ndQuadrant.com>2013-02-04 10:29:22 +0000
committerSimon Riggs <simon@2ndQuadrant.com>2013-02-04 10:29:22 +0000
commitbd56e74127dea4102d1fc761d65fefbb32146713 (patch)
tree9bc3b544a092867296e44fefc8a79af4e11e65b5 /doc/src
parent62e666400dddf605b9b6d9a7ac2918711b5c5629 (diff)
downloadpostgresql-bd56e74127dea4102d1fc761d65fefbb32146713.tar.gz
postgresql-bd56e74127dea4102d1fc761d65fefbb32146713.zip
Reset master xmin when hot_standby_feedback disabled.
If walsender has xmin of standby then ensure we reset the value to 0 when we change from hot_standby_feedback=on to hot_standby_feedback=off.
Diffstat (limited to 'doc/src')
-rw-r--r--doc/src/sgml/protocol.sgml6
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml
index 1a750593707..d32626677d1 100644
--- a/doc/src/sgml/protocol.sgml
+++ b/doc/src/sgml/protocol.sgml
@@ -1682,8 +1682,10 @@ The commands accepted in walsender mode are:
</term>
<listitem>
<para>
- The standby's current xmin. This may be 0, if the standby does not
- support feedback, or is not yet in Hot Standby state.
+ The standby's current xmin. This may be 0, if the standby is
+ sending notification that Hot Standby feedback will no longer
+ be sent on this connection. Later non-zero messages may
+ reinitiate the feedback mechanism.
</para>
</listitem>
</varlistentry>