使用Placement Rules in SQL时报错

🪐 TiDB 技术问题
1

【 TiDB 使用环境】/测试/ Poc
【 TiDB 版本】7.5.1
操作如下:
mysql> Create placement policy 5policy leader_constraints=“[+availableAZ=cn-beijing-a:2]” follower_constraints=“{+availableAZ=cn-beijing-b: 2,+availableAZ=cn-beijing-c: 1}”;
Query OK, 0 rows affected (0.53 sec)

mysql> alter table test.t1 placement policy 5policy;
ERROR 8243 (HY000): “[PD:placement:ErrRuleContent]invalid rule content, rule ‘table_rule_102_0’ from rule group ‘TiDB_DDL_102’ can not match any store”
请问是何原因？

2

换个写法可以了
CREATE PLACEMENT POLICY 5policy CONSTRAINTS=‘{“+availableAZ=cn-beijing-a”:2, “+availableAZ=cn-beijing-b”: 2, “+availableAZ=cn-beijing-c”: 1}’;