dm1.0.5 tidb3.0.15 同步阿里云 drds5.7 出现的问题

...{        "id": 2,        "name": "mysql_binlog_format",        "desc": "check whether mysql binlog_format is ROW",        "state": "success",        "errorMsg": "",        "instruction": "",        "extra": "address of db instance - mysql.rds.aliyuncs.com:3306"},{        "id": 14,        "name": "sharding table `库名`.`表名` consistency checking",        "desc": "check consistency of sharding table structures",        "state": "fail",        "errorMsg": "instance agency-slave-merge-01 table `库名`.`表名` of sharding `库名`.`表名` have auto-increment key, would conflict with each other to cause data corruption",        "instruction": "please handle it by yourself, read document https://pingcap.com/docs-cn/dev/reference/tools/data-migration/usage-scenarios/best-practice-dm-shard/#自增主键冲突处理 for more detail (only have Chinese document now, will translate to English later)",        "extra": "auto-increment key checking"},{        "id": 7,        "name": "mysql_version",        "desc": "check whether mysql version is satisfied",        "state": "success",        "errorMsg": "",        "instruction": "",        "extra": "address of db instance - mysql.rds.aliyuncs.com:3306"},...

自增主键冲突处理
在 DM 中，我们提供了 Column mapping 用于处理 bigint 类型的自增主键在合并时可能出现冲突的问题，但我们强烈不推荐使用该功能。如果业务上允许，我们推荐使用以下两种处理方式。