Introduce a new GUC_REPORT setting "in_hot_standby".
Aside from being queriable via SHOW, this value is sent to the client
immediately at session startup, and again later on if the server gets
promoted to primary during the session. The immediate report will be
used in an upcoming patch to avoid an extra round trip when trying to
connect to a primary server.
Haribabu Kommi, Greg Nancarrow, Tom Lane; reviewed at various times
by Laurenz Albe, Takayuki Tsunakawa, Peter Smith.
Discussion: https://postgr.es/m/CAF3+xM+8-ztOkaV9gHiJ3wfgENTq97QcjXQt+rbFQ6F7oNzt9A@mail.gmail.com
Branch
------
master
Details
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https://git.postgresql.org/pg/commitdiff/bf8a662c9afad6fd07b42cdc5e71416c51f75d31
Modified Files
--------------
doc/src/sgml/config.sgml | 31 ++++++++++++++++++-----
doc/src/sgml/high-availability.sgml | 7 ++++--
doc/src/sgml/libpq.sgml | 6 ++++-
doc/src/sgml/protocol.sgml | 6 ++++-
src/backend/utils/misc/check_guc | 2 +-
src/backend/utils/misc/guc.c | 50 +++++++++++++++++++++++++++++++++++++
6 files changed, 91 insertions(+), 11 deletions(-)
