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Remove non-fast promotion.

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When fast promotion was supported in 9.3, non-fast promotion became
undocumented feature and it's basically not available for ordinary users.
However we decided not to remove non-fast promotion at that moment,
to leave it for a release or two for debugging purpose or as an emergency
method because fast promotion might have some issues, and then to
remove it later. Now, several versions were released since that decision
and there is no longer reason to keep supporting non-fast promotion.
Therefore this commit removes non-fast promotion.

Author: Fujii Masao
Reviewed-by: Hamid Akhtar, Kyotaro Horiguchi
Discussion: https://postgr.es/m/76066434-648f-f567-437b-54853b43398f@oss.nttdata.com
This commit is contained in:
Fujii Masao
2020-07-29 21:24:26 +09:00
parent 9878b643f3
commit b5310e4ff6
4 changed files with 17 additions and 44 deletions
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7
src/backend/postmaster/postmaster.c
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@@ -5333,7 +5333,12 @@ sigusr1_handler(SIGNAL_ARGS)
pmState == PM_HOT_STANDBY || pmState == PM_WAIT_READONLY) &&
CheckPromoteSignal())
{
/* Tell startup process to finish recovery */
/*
* Tell startup process to finish recovery.
*
* Leave the promote signal file in place and let the Startup
* process do the unlink.
*/
signal_child(StartupPID, SIGUSR2);
}