Question

我最近安装了一个InnoDB集群，并尝试创建一个没有任何主键或等效键的表来测试集群索引的概念，其中“如果表包含以下内容，InnoDB会在包含行ID值的综合列上内部生成一个名为GEN_CLUST_INDEX的隐藏集群索引。没有PRIMARY KEY或合适的UNIQUE索引”。

我创建了如下表格：

create table repl_test (Name varchar(10));

检查是否创建了GEN_CLUST_INDEX：

select * from mysql.innodb_index_stats where database_name='test' and table_name = 'repl_test';

+---------------+------------+-----------------+---------------------+--------------+------------+-------------+-----------------------------------+
| database_name | table_name | index_name      | last_update         | stat_name    | stat_value | sample_size | stat_description                  |
+---------------+------------+-----------------+---------------------+--------------+------------+-------------+-----------------------------------+
| test      | repl_test  | GEN_CLUST_INDEX | 2019-02-22 06:29:26 | n_diff_pfx01 |          0 |           1 | DB_ROW_ID                         |
| test      | repl_test  | GEN_CLUST_INDEX | 2019-02-22 06:29:26 | n_leaf_pages |          1 |        NULL | Number of leaf pages in the index |
| test      | repl_test  | GEN_CLUST_INDEX | 2019-02-22 06:29:26 | size         |          1 |        NULL | Number of pages in the index      |
+---------------+------------+-----------------+---------------------+--------------+------------+-------------+-----------------------------------+
3 rows in set (0.00 sec)

但是，当我尝试插入行时，出现以下错误：

insert into repl_test values ('John');

ERROR 3098 (HY000): The table does not comply with the requirements by an external plugin.

2019-02-22T14:32:53.177700Z 594022 [ERROR] [MY-011542] [Repl] Plugin group_replication reported: 'Table repl_test does not have any PRIMARY KEY. This is not compatible with Group Replication.'

下面是我的conf文件：

[client]
port            = 3306
socket          = /tmp/mysql.sock

[mysqld_safe]
socket          = /tmp/mysql.sock

[mysqld]

socket          = /tmp/mysql.sock
port            = 3306
basedir         = /mysql/product/8.0/TEST
datadir         = /mysql/data/TEST/innodb_data
log-error       = /mysql/admin/TEST/innodb_logs/mysql.log
log_bin         = /mysql/binlog/TEST/innodb_logs/mysql-bin
server-id=1
max_connections = 500
open_files_limit = 65535
expire_logs_days = 15

innodb_flush_log_at_trx_commit=1
sync_binlog=1

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
binlog_checksum = NONE
enforce_gtid_consistency = ON
gtid_mode = ON
relay-log=<<hostname>>-relay-bin

我的MySQL版本：x86_64上的linux-glibc2.12的mysql Ver 8.0.11（MySQL社区服务器-GPL）

Answer 1

对于非集群设置，自动生成PK应该可以正常工作。但是，InnoDB Cluster（组复制）和Galera需要一个用户 PK（或可以升级的UNIQUE）。

如果愿意，请向bugs.mysql.com提交 documentation 错误，抱怨此限制不清楚。确保指向需要修复的页面。

错误MY-011542报告了repl插件group_replication：'表repl_test没有任何主键

1 个答案: