Performance Schema Replication Tables The  replication_group_members  table has these columns: Name of the Group Replication channel. The member server UUID. This has a different value for each member in the group. This also serves as a key because it is unique to each member. Network address of this member (host name or IP address). Retrieved from the member’s  hostname variable. This is the address which clients connect to, unlike the group_replication_local_address which is used for internal group communication. Port on which the server is listening. Retrieved from the member’s  port  variable. • MEMBER_PORT • MEMBER_HOST • MEMBER_ID • CHANNEL_NAME • MEMBER_STATE Current state of this member; can be any one of the following: • ONLINE : The member is in a fully functioning state. • RECOVERING : The server has joined a group from which it is retrieving data. • OFFLINE : The group replication plugin is installed but has not been started. • ERROR : The member has encountered an error, either during applying transactions or during the recovery phase, and is not participating in the group’s transactions. • UNREACHABLE : The failure detection process suspects that this member cannot be contacted, because the group messages have timed out. See Section 18.4.2, “Group Replication Server States” . • MEMBER_ROLE • MEMBER_VERSION MySQL version of the member. Role of the member in the group, either  PRIMARY  or  SECONDARY . The  replication_group_members  table has no indexes. TRUNCATE TABLE  is not permitted for the  replication_group_members  table. 27.12.11.12 The replication_group_member_stats Table This table shows statistical information for replication group members. It is populated only when Group Replication is running. The  replication_group_member_stats  table has these columns: • CHANNEL_NAME 5016