Bug #87719 cant't change master info for group replication

• Submitted: 10 Sep 2017 13:12
• Modified: 11 Sep 2017 20:46
• Reporter: victor zheng
• Status: Not a Bug
• Category: MySQL Server
• Severity: S3 (Non-critical)
• Version: 5.7.18
• OS: Any
• Assigned to: MySQL Verification Team
• CPU Architecture: Any

[10 Sep 2017 13:12] victor zheng

Description:
cant't change master info  for group replication 

channel name error

How to repeat:
mysql>  CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_pass' FOR CHANNEL 'group_replication_applier2';
Query OK, 0 rows affected, 2 warnings (0.12 sec)

mysql>
mysql>
mysql>
mysql>  CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_pass' FOR CHANNEL 'group_replication_applier';
ERROR 3076 (HY000): Couldn't create channel: Channel name is either invalid or too long.

why i can't change the master to this channel;
if the channel name is too long ,this longger one 'group_replication_applier2' is ok

[11 Sep 2017 20:46] MySQL Verification Team

Hi,

As documented here:
https://dev.mysql.com/doc/refman/5.7/en/channels-naming-conventions.html

Although you are generally free to use any name for channels, the following names are reserved:

    group_replication_applier

    group_replication_recovery 

all best
Bogdan