database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-30 06:01:21 +03:00
Code Activity

Allow walreceiver configuration to change on reload

Browse Source 
The parameters primary_conninfo, primary_slot_name and
wal_receiver_create_temp_slot can now be changed with a simple "reload"
signal, no longer requiring a server restart.  This is achieved by
signalling the walreceiver process to terminate and having it start
again with the new values.

Thanks to Andres Freund, Kyotaro Horiguchi, Fujii Masao for discussion.

Author: Sergei Kornilov <sk@zsrv.org>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/19513901543181143@sas1-19a94364928d.qloud-c.yandex.net
This commit is contained in:
Alvaro Herrera
2020-03-27 19:43:41 -03:00
parent 092c6936de
commit 1e6148032e
10 changed files with 179 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/backend/replication/walreceiver.c
View File

@@ -679,7 +679,11 @@ WalRcvWaitForStartPosition(XLogRecPtr *startpoint, TimeLineID *startpointTLI)
walrcv->walRcvState == WALRCV_STOPPING);
if (walrcv->walRcvState == WALRCV_RESTARTING)
{
/* we don't expect primary_conninfo to change */
/*
* No need to handle changes in primary_conninfo or
* primary_slotname here. Startup process will signal us to
* terminate in case those change.
*/
*startpoint = walrcv->receiveStart;
*startpointTLI = walrcv->receiveStartTLI;
walrcv->walRcvState = WALRCV_STREAMING;