Bug #34492 RESET SLAVE does not reset last_error

• Submitted: 12 Feb 2008 15:08
• Modified: 1 May 2008 11:34
• Reporter: Johan Andersson
• Status: Duplicate
• Category: MySQL Server: Replication
• Severity: S3 (Non-critical)
• Version: 5.1 (CGE 6.2)
• OS: Any
• Assigned to: Assigned Account
• CPU Architecture: Any
• Tags: replication, RESET SLAVE

[12 Feb 2008 15:08] Johan Andersson

Description:
RESET SLAVE does not reset last_X_errno and last_X_error:
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: 
                  Master_Host: 192.168.7.204
                  Master_User: test
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: 
          Read_Master_Log_Pos: 4
               Relay_Log_File: blabla-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: 
             Slave_IO_Running: No
            Slave_SQL_Running: No
              Replicate_Do_DB: mysql,BLA
          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: 0
              Relay_Log_Space: 125
              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: NULL
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 1045
                Last_IO_Error: error connecting to master 'test@192.168.7.204:3306' - retry-time: 60  retries: 86400
               Last_SQL_Errno: 0
               Last_SQL_Error: 

mysql> RESET SLAVE;

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: 
                  Master_Host: 192.168.7.204
                  Master_User: test
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: 
          Read_Master_Log_Pos: 4
               Relay_Log_File: blabla-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: 
             Slave_IO_Running: No
            Slave_SQL_Running: No
              Replicate_Do_DB: mysql,BLA
          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: 0
              Relay_Log_Space: 125
              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: NULL
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 1045
                Last_IO_Error: error connecting to master 'test@192.168.7.204:3306' - retry-time: 60  retries: 86400
               Last_SQL_Errno: 0
               Last_SQL_Error: 

How to repeat:
see above

set up a replication that fails to start.

SHOW SLAVE STATUS;
RESET SLAVE;
SHOW SLAVE STATUS;

Suggested fix:
reset the error numbers

[18 Feb 2008 19:25] MySQL Verification Team

Thank you for the bug report.

[6 Mar 2008 14:46] Andrei Elkin

This one should be a dup/parent for Bug #34654  RESET SLAVE and STOP SLAVE/START SLAVE does not clear Last_XYZ_Errno.

[1 May 2008 11:34] Andrei Elkin

Bug #34654 is the parent.