添加dolphin_hot_standby参数

src/bin/gs_guc/cluster_guc.conf

@@ -741,6 +741,7 @@ ss_scrlock_worker_bind_core|string|0,0|NULL|NULL|
 ss_scrlock_server_bind_core|string|0,0|NULL|NULL|
 dolphin_server_port|int|1024,65535|NULL|NULL|
 enable_dolphin_proto|bool|0,0|NULL|NULL|
+dolphin_hot_standby|bool|0,0,|NULL|NULL|
 enable_remote_excute|bool|0,0|NULL|NULL|
 light_comm|bool|0,0|NULL|NULL|
 ignore_standby_lsn_window|int|0,2147483647|ms|NULL|

src/common/backend/utils/misc/guc/guc_network.cpp

@@ -366,6 +366,17 @@ static void InitNetworkConfigureNamesBool()
             NULL,
             NULL,
             NULL},
+        {{"dolphin_hot_standby",
+            PGC_POSTMASTER,
+            NODE_ALL,
+            CONN_AUTH_SECURITY,
+            gettext_noop("Enables connectivity of the standby dolphin protocol"),
+            NULL},
+            &g_instance.attr.attr_network.dolphin_hot_standby,
+            true,
+            NULL,
+            NULL,
+            NULL},
         
         /* End-of-list marker */
         {{NULL,

src/include/knl/knl_guc/knl_instance_attr_network.h

@@ -80,6 +80,7 @@ typedef struct knl_instance_attr_network {
 #endif
     bool enable_dolphin_proto;
     int dolphin_server_port;
+    bool dolphin_hot_standby;
 } knl_instance_attr_network;
 
 #endif /* SRC_INCLUDE_KNL_KNL_INSTANCE_ATTR_NETWORK_H_ */