MDEV-28010 Deprecate spider_crd_type and spider_crd_weight

Deprecate the variables spider_crd_type and spider_crd_weight.
The value should be defined by the engine developers.

storage/spider/mysql-test/spider/r/variable_deprecation.result

@@ -137,6 +137,35 @@ Warnings:
 Warning	1287	The table parameter 'sts_mode' is deprecated and will be removed in a future release
 DROP TABLE tbl_a;
 DROP TABLE tbl_b;
+# MDEV-28010 Deprecate spider_crd_type and spider_crd_weight
+SET spider_crd_type = 1;
+Warnings:
+Warning	1287	'@@spider_crd_type' is deprecated and will be removed in a future release
+SHOW VARIABLES LIKE "spider_crd_type";
+Variable_name	Value
+spider_crd_type	1
+CREATE TABLE tbl_a (a INT) ENGINE=Spider COMMENT='ctp "1"';
+Warnings:
+Warning	1287	The table parameter 'ctp' is deprecated and will be removed in a future release
+CREATE TABLE tbl_b (a INT) ENGINE=Spider COMMENT='crd_type "1"';
+Warnings:
+Warning	1287	The table parameter 'crd_type' is deprecated and will be removed in a future release
+DROP TABLE tbl_a;
+DROP TABLE tbl_b;
+SET spider_crd_weight = 1;
+Warnings:
+Warning	1287	'@@spider_crd_weight' is deprecated and will be removed in a future release
+SHOW VARIABLES LIKE "spider_crd_weight";
+Variable_name	Value
+spider_crd_weight	1
+CREATE TABLE tbl_a (a INT) ENGINE=Spider COMMENT='cwg "1"';
+Warnings:
+Warning	1287	The table parameter 'cwg' is deprecated and will be removed in a future release
+CREATE TABLE tbl_b (a INT) ENGINE=Spider COMMENT='crd_weight "1"';
+Warnings:
+Warning	1287	The table parameter 'crd_weight' is deprecated and will be removed in a future release
+DROP TABLE tbl_a;
+DROP TABLE tbl_b;
 DROP DATABASE auto_test_local;
 for master_1
 for child2

storage/spider/mysql-test/spider/t/variable_deprecation.test

@@ -83,6 +83,23 @@ eval CREATE TABLE tbl_b (a INT) $MASTER_1_ENGINE COMMENT='sts_mode "3"';
 DROP TABLE tbl_a;
 DROP TABLE tbl_b;
 
+--echo # MDEV-28010 Deprecate spider_crd_type and spider_crd_weight
+SET spider_crd_type = 1;
+SHOW VARIABLES LIKE "spider_crd_type";
+eval CREATE TABLE tbl_a (a INT) $MASTER_1_ENGINE COMMENT='ctp "1"';
+eval CREATE TABLE tbl_b (a INT) $MASTER_1_ENGINE COMMENT='crd_type "1"';
+
+DROP TABLE tbl_a;
+DROP TABLE tbl_b;
+
+SET spider_crd_weight = 1;
+SHOW VARIABLES LIKE "spider_crd_weight";
+eval CREATE TABLE tbl_a (a INT) $MASTER_1_ENGINE COMMENT='cwg "1"';
+eval CREATE TABLE tbl_b (a INT) $MASTER_1_ENGINE COMMENT='crd_weight "1"';
+
+DROP TABLE tbl_a;
+DROP TABLE tbl_b;
+
 DROP DATABASE auto_test_local;
 
 --disable_query_log

storage/spider/spd_param.cc

@@ -1707,7 +1707,7 @@ int spider_param_crd_sync(
  */
 static MYSQL_THDVAR_INT(
   crd_type, /* name */
-  PLUGIN_VAR_RQCMDARG, /* opt */
+  PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_DEPRECATED, /* opt */
   "Type of cardinality calculation.", /* comment */
   NULL, /* check */
   spider_use_table_value_deprecated, /* update */
@@ -1732,7 +1732,7 @@ int spider_param_crd_type(
  */
 static MYSQL_THDVAR_INT(
   crd_weight, /* name */
-  PLUGIN_VAR_RQCMDARG, /* opt */
+  PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_DEPRECATED, /* opt */
   "Weight coefficient to calculate effectiveness of index from cardinality of column.", /* comment */
   NULL, /* check */
   spider_use_table_value_deprecated, /* update */

storage/spider/spd_table.cc

@@ -2344,7 +2344,9 @@ int spider_parse_connect_info(
 #endif
           SPIDER_PARAM_LONG_LIST_WITH_MAX("cto", connect_timeouts, 0,
             2147483647);
+          SPIDER_PARAM_DEPRECATED_WARNING("ctp");
           SPIDER_PARAM_INT_WITH_MAX("ctp", crd_type, 0, 2);
+          SPIDER_PARAM_DEPRECATED_WARNING("cwg");
           SPIDER_PARAM_DOUBLE("cwg", crd_weight, 1);
           SPIDER_PARAM_INT_WITH_MAX("dat", delete_all_rows_type, 0, 1);
           SPIDER_PARAM_INT_WITH_MAX("ddi", direct_dup_insert, 0, 1);
@@ -2503,6 +2505,7 @@ int spider_parse_connect_info(
 #ifdef WITH_PARTITION_STORAGE_ENGINE
           SPIDER_PARAM_INT_WITH_MAX("crd_sync", crd_sync, 0, 2);
 #endif
+          SPIDER_PARAM_DEPRECATED_WARNING("crd_type");
           SPIDER_PARAM_INT_WITH_MAX("crd_type", crd_type, 0, 2);
           SPIDER_PARAM_LONGLONG("priority", priority, 0);
 #ifndef WITHOUT_SPIDER_BG_SEARCH
@@ -2520,6 +2523,7 @@ int spider_parse_connect_info(
           error_num = connect_string_parse.print_param_error();
           goto error;
         case 10:
+          SPIDER_PARAM_DEPRECATED_WARNING("crd_weight");
           SPIDER_PARAM_DOUBLE("crd_weight", crd_weight, 1);
           SPIDER_PARAM_LONGLONG("split_read", split_read, 0);
           SPIDER_PARAM_INT_WITH_MAX("quick_mode", quick_mode, 0, 3);