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authorRobert Haas <rhaas@postgresql.org>2016-10-27 14:27:40 -0400
committerRobert Haas <rhaas@postgresql.org>2016-10-27 14:54:35 -0400
commit4a43a6244d93dd0e16a898ff18d8641512b6006c (patch)
tree10effc8522a77f01f16ba48987fb809bb05d1e99
parent05e2293f4c70cdda00357322f62e3ccd8b1043db (diff)
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.
-rw-r--r--src/backend/postmaster/postmaster.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index c834d2e3044..923fa3f2fd2 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -1753,7 +1753,8 @@ ServerLoop(void)
}
/* 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 have lost the archiver, try to start a new one. */
@@ -2963,7 +2964,7 @@ 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;
}