Question: 80
What is the best method for monitoring Group Replication conflict resolution?
A. the PERFORMANCE_SCHEMA tables
B. the SHOW PROCESSLIST command
C. the INNODB Lock Monitor details
D. the SHOW STATUS command
E. the INFORMATION_SCHEMA tables
解析:
什么是监控组复制冲突情况的最好方法?
resolution 是出现的频率和分布等的意思
PERFORMANCE_SCHEMA
是监控系统性能(如等待事件次数,时长等)
参考资料:https://blog.csdn.net/n88Lpo/article/details/80331752
17.3.3 Replication_group_member_stats
Each member in a replication group certifies and applies transactions received by the group. Statistics regarding the certifier and applier procedures are useful to understand how the applier queue is growing, how many conflicts have been found, how many transactions were checked, which transactions are committed everywhere, and so on.
The performance_schema.replication_group_member_stats table provides group-level information related to the certification process, and also statistics for the transactions received and originated by each individual member of the replication group. The information is shared between all the server instances that are members of the replication group, so information on all the group members can be queried from any member.
参考资料:https://dev.mysql.com/doc/refman/5.7/en/group-replication-replication-group-member-stats.html
Answer: A