Is that true? In classic replication (SQL_SLAVE_SKIP_COUNTER=1) you never see UUIDs in logs and show slave status like 3e11fa47-71ca-11e1-9e33-c80aa9429562:1-5?
When you see an UUID, there is GTID replication used?
> SHOW SLAVE STATUS\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: localhost
Master_User: root
Master_Port: 13000
Connect_Retry: 60
Master_Log_File: master-bin.000002
Read_Master_Log_Pos: 1307
Relay_Log_File: slave-relay-bin.000003
Relay_Log_Pos: 1508
Relay_Master_Log_File: master-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1307
Relay_Log_Space: 1858
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 3e11fa47-71ca-11e1-9e33-c80aa9429562
Master_Info_File: /var/mysqld.2/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 10
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
**Retrieved_Gtid_Set: 3e11fa47-71ca-11e1-9e33-c80aa9429562:1-5
Executed_Gtid_Set: 3e11fa47-71ca-11e1-9e33-c80aa9429562:1-5**
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_name:
1 row in set (0.00 sec)