fix_assertion_failure_walreceiver_v2.patch

diff --git a/src/backend/postmaster/startup.c b/src/backend/postmaster/startup.c
index 22135d5e07..69077bd207 100644
--- a/src/backend/postmaster/startup.c
+++ b/src/backend/postmaster/startup.c
@@ -62,6 +62,9 @@ static volatile sig_atomic_t in_restore_command = false;
 static void StartupProcTriggerHandler(SIGNAL_ARGS);
 static void StartupProcSigHupHandler(SIGNAL_ARGS);
 
+/* Callbacks */
+static void StartupProcExit(int code, Datum arg);
+
 
 /* --------------------------------
  *		signal handler routines
@@ -183,6 +186,19 @@ HandleStartupProcInterrupts(void)
 }
 
 
+/* --------------------------------
+ *		signal handler routines
+ * --------------------------------
+ */
+static void
+StartupProcExit(int code, Datum arg)
+{
+	/* Shutdown the recovery environment */
+	if (standbyState != STANDBY_DISABLED)
+		ShutdownRecoveryTransactionEnvironment();
+}
+
+
 /* ----------------------------------
  *	Startup Process main entry point
  * ----------------------------------
@@ -190,6 +206,9 @@ HandleStartupProcInterrupts(void)
 void
 StartupProcessMain(void)
 {
+	/* Arrange to clean up at startup process exit */
+	on_shmem_exit(StartupProcExit, 0);
+
 	/*
 	 * Properly accept or ignore signals the postmaster might send us.
 	 */
diff --git a/src/backend/storage/ipc/standby.c b/src/backend/storage/ipc/standby.c
index 17de5a6d0e..1465ee44a1 100644
--- a/src/backend/storage/ipc/standby.c
+++ b/src/backend/storage/ipc/standby.c
@@ -127,10 +127,25 @@ InitRecoveryTransactionEnvironment(void)
  *
  * Prepare to switch from hot standby mode to normal operation. Shut down
  * recovery-time transaction tracking.
+ *
+ * This must be called even in shutdown of startup process if transaction
+ * tracking has been initialized. Otherwise some locks the tracked
+ * transactions were holding will not be released and and may interfere with
+ * the processes still running (but will exit soon later) at the exit of
+ * startup process.
  */
 void
 ShutdownRecoveryTransactionEnvironment(void)
 {
+	/*
+	 * Do nothing if RecoveryLockLists is NULL because which means that
+	 * transaction tracking has not been yet initialized or has been already
+	 * shutdowned. This prevents transaction tracking from being shutdowned
+	 * unexpectedly more than once.
+	 */
+	if (RecoveryLockLists == NULL)
+		return;
+
 	/* Mark all tracked in-progress transactions as finished. */
 	ExpireAllKnownAssignedTransactionIds();