Details
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Bug
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Status: Confirmed (View Workflow)
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Major
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Resolution: Unresolved
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None
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None
Description
If the slave uses using_gtid >0 ,When we execute the stop and start slave. Slave I/O thread threads start from where the slave_sql_thread stopped. In case of delayed replica or Master is down, The slave/delayed slave will lose the downloaded binlogs.
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Master_Port: 3306
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Connect_Retry: 60
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Master_Log_File: mariadb1-bin.000048
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Read_Master_Log_Pos: 527
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Relay_Log_File: mariadb2-relay-bin.000002
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Relay_Log_Pos: 558
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Relay_Master_Log_File: mariadb1-bin.000046
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Slave_IO_Running: Yes
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Slave_SQL_Running: Yes
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Replicate_Do_DB:
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Replicate_Ignore_DB:
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Replicate_Do_Table:
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Replicate_Ignore_Table:
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Replicate_Wild_Do_Table:
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Replicate_Wild_Ignore_Table:
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Last_Errno: 0
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Last_Error:
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Skip_Counter: 0
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Exec_Master_Log_Pos: 256
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Relay_Log_Space: 3451
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Until_Condition: None
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Until_Log_File:
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Until_Log_Pos: 0
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Master_SSL_Allowed: No
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Master_SSL_CA_File:
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Master_SSL_CA_Path:
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Master_SSL_Cert:
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Master_SSL_Cipher:
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Master_SSL_Key:
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Seconds_Behind_Master: 47
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Master_SSL_Verify_Server_Cert: No
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Last_IO_Errno: 0
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Last_IO_Error:
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Last_SQL_Errno: 0
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Last_SQL_Error:
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Replicate_Ignore_Server_Ids:
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Master_Server_Id: 1000
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Master_SSL_Crl:
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Master_SSL_Crlpath:
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Using_Gtid: Slave_Pos
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Gtid_IO_Pos: 1-1000-37
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Replicate_Do_Domain_Ids:
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Replicate_Ignore_Domain_Ids:
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Parallel_Mode: optimistic
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SQL_Delay: 300
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SQL_Remaining_Delay: 253
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Slave_SQL_Running_State: Waiting until MASTER_DELAY seconds after master executed event
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Slave_DDL_Groups: 26
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Slave_Non_Transactional_Groups: 0
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Slave_Transactional_Groups: 0
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1 row in set (0.002 sec)
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MariaDB [(none)]> stop slave ;
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Query OK, 0 rows affected (2.027 sec)
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MariaDB [(none)]> start slave;
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Query OK, 0 rows affected (0.026 sec)
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show slave status\G
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*************************** 1. row ***************************
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Slave_IO_State: Connecting to master
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Master_Host: 172.20.0.2
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Master_User: repl_user
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Master_Port: 3306
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Connect_Retry: 60
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Master_Log_File: mariadb1-bin.000046
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Read_Master_Log_Pos: 256
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Relay_Log_File: mariadb2-relay-bin.000001
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Relay_Log_Pos: 4
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Relay_Master_Log_File: mariadb1-bin.000046
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Slave_IO_Running: Connecting
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Slave_SQL_Running: Yes
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Replicate_Do_DB:
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Replicate_Ignore_DB:
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Replicate_Do_Table:
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Replicate_Ignore_Table:
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Replicate_Wild_Do_Table:
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Replicate_Wild_Ignore_Table:
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Last_Errno: 0
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Last_Error:
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Skip_Counter: 0
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Exec_Master_Log_Pos: 256
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Relay_Log_Space: 256
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Until_Condition: None
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Until_Log_File:
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Until_Log_Pos: 0
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Master_SSL_Allowed: No
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Master_SSL_CA_File:
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Master_SSL_CA_Path:
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Master_SSL_Cert:
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Master_SSL_Cipher:
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Master_SSL_Key:
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Seconds_Behind_Master: NULL
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Master_SSL_Verify_Server_Cert: No
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Last_IO_Errno: 0
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Last_IO_Error:
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Last_SQL_Errno: 0
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Last_SQL_Error:
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Replicate_Ignore_Server_Ids:
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Master_Server_Id: 1000
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Master_SSL_Crl:
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Master_SSL_Crlpath:
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Using_Gtid: Slave_Pos
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Gtid_IO_Pos: 1-1000-35
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Replicate_Do_Domain_Ids:
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Replicate_Ignore_Domain_Ids:
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Parallel_Mode: optimistic
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SQL_Delay: 300
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SQL_Remaining_Delay: NULL
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Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
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Slave_DDL_Groups: 26
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Slave_Non_Transactional_Groups: 0
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Slave_Transactional_Groups: 0
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2024-03-10 6:57:18 290 [Note] Slave: received end packet from server, apparent master shutdown:
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2024-03-10 6:57:18 290 [Note] Slave I/O thread: Failed reading log event, reconnecting to retry, log 'mariadb1-bin.000049' at position 527; GTID position '1-1000-38'
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2024-03-10 6:57:18 290 [ERROR] Slave I/O: error reconnecting to master 'repl_user@172.20.0.2:3306' - retry-time: 60 maximum-retries: 100000 message: Can't connect to server on '172.20.0.2' (111 "Connection refused"), Internal MariaDB error code: 2003
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2024-03-10 6:57:35 291 [Note] Slave SQL thread exiting, replication stopped in log 'mariadb1-bin.000046' at position 256; GTID position '1-1000-35', master: 172.20.0.2:3306
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2024-03-10 6:57:35 290 [Note] Slave I/O thread killed during or after a reconnect done to recover from failed read
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2024-03-10 6:57:35 290 [Note] Slave I/O thread exiting, read up to log 'mariadb1-bin.000049', position 527; GTID position 1-1000-38, master 172.20.0.2:3306
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2024-03-10 6:57:37 290 [Note] cannot connect to master to kill slave io_thread's connection
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2024-03-10 6:57:58 304 [Note] Slave I/O thread: Start semi-sync replication to master 'repl_user@172.20.0.2:3306' in log 'mariadb1-bin.000046' at position 256
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2024-03-10 6:57:58 305 [Note] Slave SQL thread initialized, starting replication in log 'mariadb1-bin.000046' at position 256, relay log './mariadb2-relay-bin.000001' position: 4; GTID position '1-1000-35'
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2024-03-10 6:58:16 304 [ERROR] Slave I/O: error connecting to master 'repl_user@172.20.0.2:3306' - retry-time: 60 maximum-retries: 100000 message: Can't connect to server on '172.20.0.2' (113 "No route to host"), Internal MariaDB error code: 2003
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