Might be duplicate of:
- MySQL slave stuck on Applying batch of row changes (write) or
- MySQL8.0 Replication Got Stuck "Applying batch of row changes (delete)"
I am trying to use MySQL 8.0.26 in master and slave configuration.
The master database has a very large write workload. I suspect this is due to configuration miss-match related to parallel execution of transactions.
It worked when I first configured it, but now it is stuck. It's stuck in Applying batch of row changes (delete).
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for source to send event
Master_Host: mysql-host
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000193
Read_Master_Log_Pos: 509776246
Relay_Log_File: mysql-relay-bin.000038
Relay_Log_Pos: 938746
Relay_Master_Log_File: mysql-bin.000086
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: 938531
Relay_Log_Space: 136680192903
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: 647694
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: 6da8b175-05c9-11ec-99ed-00b771a288f6
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Applying batch of row changes (delete)
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
Outputs of following:
- SHOW ENGINE INNODB STATUS: https://pastebin.com/Bxr2t641
- SHOW GLOBAL STATUS: https://pastebin.com/9j94St7C
- SHOW GLOBAL VARIABLES: https://pastebin.com/9j94St7C
