打开dms时，数据库只能使用段页式存储，开放release版本的enable_segment参数可配置，提升易用性

src/bin/gs_guc/cluster_guc.conf

@@ -727,6 +727,7 @@ logical_sender_timeout|int|0,2147483647|ms|NULL|
 var_eq_const_selectivity|bool|0,0|NULL|NULL|
 enable_save_confirmed_lsn|bool|0,0|NULL|NULL|
 ss_enable_dss|bool|0,0|NULL|NULL|
+enable_segment|bool|0,0|NULL|NULL|
 ss_dss_vg_name|string|0,0|NULL|NULL|
 ss_dss_conn_path|string|0,0|NULL|NULL|
 ss_enable_dms|bool|0,0|NULL|NULL|

src/bin/initdb/initdb.cpp

@@ -1593,6 +1593,10 @@ static void setup_config(void)
         securec_check_c(nRet, "\0", "\0");
         conflines = replace_token(conflines, "#ss_enable_dss = off", repltok);
 
+        nRet = strcpy_s(repltok, sizeof(repltok), "enable_segment = on");
+        securec_check_c(nRet, "\0", "\0");
+        conflines = replace_token(conflines, "#enable_segment = off", repltok);
+
         conflines = ss_addnodeparmater(conflines);
     }
 

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

@@ -956,7 +956,6 @@ static void InitStorageConfigureNamesBool()
             NULL,
             NULL},
 
-#ifdef USE_ASSERT_CHECKING
         {{"enable_segment",
             PGC_SIGHUP,
             NODE_ALL,
@@ -968,7 +967,7 @@ static void InitStorageConfigureNamesBool()
             NULL,
             NULL,
             NULL},
-#endif
+
         {{"enable_gtm_free",
             PGC_POSTMASTER,
             NODE_DISTRIBUTE,

src/common/backend/utils/misc/postgresql_single.conf.sample

@@ -852,3 +852,4 @@ job_queue_processes = 10        # Number of concurrent jobs, optional: [0..1000]
 #ss_enable_ondemand_recovery = off
 #ss_ondemand_recovery_mem_size = 4GB     # min: 1GB, max: 100GB
 #enable_ss_dorado = off
+#enable_segment = off