postgres.git / summary / log / commit / refs

commit    4a8cfbdcbe8447e4226b2ebdb155e0acc1167db5
Author:   Robert Haas <rhaas@postgresql.org>
Date:     Thu Oct 27 18:27:40 2016 +0000

    If the stats collector dies during Hot Standby, restart it.
    
    This bug exists as far back as 9.0, when Hot Standby was introduced,
    so back-patch to all supported branches.
    
    Report and patch by Takayuki Tsunakawa, reviewed by Michael Paquier
    and Kuntal Ghosh.


 src/backend/postmaster/postmaster.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 5489f239cc4..56c0c493449 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -1749,7 +1749,8 @@ ServerLoop(void)
 			PgArchPID = pgarch_start();
 
 		/* If we have lost the stats collector, try to start a new one */
-		if (PgStatPID == 0 && pmState == PM_RUN)
+		if (PgStatPID == 0 &&
+			(pmState == PM_RUN || pmState == PM_HOT_STANDBY))
 			PgStatPID = pgstat_start();
 
 		/* If we need to signal the autovacuum launcher, do so now */
@@ -2929,7 +2930,7 @@ reaper(SIGNAL_ARGS)
 			if (!EXIT_STATUS_0(exitstatus))
 				LogChildExit(LOG, _("statistics collector process"),
 							 pid, exitstatus);
-			if (pmState == PM_RUN)
+			if (pmState == PM_RUN || pmState == PM_HOT_STANDBY)
 				PgStatPID = pgstat_start();
 			continue;
 		}


[parent: d1e9c8269bb1]