MySQL Master failure error: Got fatal error 1236

Colleagues to call me said the group purchase database master never synchronized, the speed of the computer dial VPN solution.

1, login from the library to see the master-Slave synchronization status, do not sync

mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 10.10.0.236
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001501
Read_Master_Log_Pos: 144001931
Relay_Log_File: mysql-relay-bin.000296
Relay_Log_Pos: 144002077
Relay_Master_Log_File: mysql-bin.001501
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB: mysql,information_schema,performance_schema,test
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: 144001931
Relay_Log_Space: 144002276
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: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Client requested master to start replication from impossible position'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 2
1 row in set (0.00 sec)

There seems to be a problem. View from library error log:

[root@tg_0_zjc tuan]# tail -n 30 logs/mysqld.log
130619 22:23:36 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.001343' at position 107, relay log './mysqld-relay-bin.000001' position: 4
130619 22:23:36 [Note] Slave I/O thread: connected to master 'slave@10.10.0.236:3306',replication started in log 'mysql-bin.001343' at position 107
130620 14:04:21 [Note] Slave: received end packet from server, apparent master shutdown:
130620 14:04:21 [Note] Slave I/O thread: Failed reading log event, reconnecting to retry, log 'mysql-bin.001343' at position 2544563
130620 14:04:21 [ERROR] Slave I/O: error reconnecting to master 'slave@10.10.0.236:3306' - retry-time: 60  retries: 86400, Error_code: 2003
130620 14:13:45 [Note] Slave: connected to master 'slave@10.10.0.236:3306',replication resumed in log 'mysql-bin.001343' at position 2544563
130623 22:04:17 [ERROR] Error reading packet from server: Lost connection to MySQL server during query ( server_errno=2013)
130623 22:04:17 [Note] Slave I/O thread: Failed reading log event, reconnecting to retry, log 'mysql-bin.001402' at position 121870679
130623 22:04:20 [ERROR] Slave I/O: error reconnecting to master 'slave@10.10.0.236:3306' - retry-time: 60  retries: 86400, Error_code: 2003
130623 22:08:29 [Note] Slave: connected to master 'slave@10.10.0.236:3306',replication resumed in log 'mysql-bin.001402' at position 121870679
130623 22:08:29 [ERROR] Error reading packet from server: Client requested master to start replication from impossible position ( server_errno=1236)
130623 22:08:29 [ERROR] Slave I/O: Got fatal error 1236 from master when reading data from binary log: 'Client requested master to start replication from impossible position', Error_code: 1236
130623 22:08:29 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.001402', position 121870679
130623 22:26:29 [Note] Error reading relay log event: slave SQL thread was killed
130623 22:26:34 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='10.10.0.236', master_port='3306', master_log_file='mysql-bin.001402', master_log_pos='121870679'. New state master_host='10.10.0.236', master_port='3306', master_log_file='mysql-bin.001403', master_log_pos='107'.
130623 22:26:42 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.001403' at position 107, relay log './mysqld-relay-bin.000001' position: 4
130623 22:26:42 [Note] Slave I/O thread: connected to master 'slave@10.10.0.236:3306',replication started in log 'mysql-bin.001403' at position 107
130629 12:04:21 [ERROR] Error reading packet from server: Lost connection to MySQL server during query ( server_errno=2013)
130629 12:04:21 [Note] Slave I/O thread: Failed reading log event, reconnecting to retry, log 'mysql-bin.001501' at position 144001931
130629 12:04:24 [ERROR] Slave I/O: error reconnecting to master 'slave@10.10.0.236:3306' - retry-time: 60  retries: 86400, Error_code: 2003
130629 12:08:33 [Note] Slave: connected to master 'slave@10.10.0.236:3306',replication resumed in log 'mysql-bin.001501' at position 144001931
130629 12:08:33 [ERROR] Error reading packet from server: Client requested master to start replication from impossible position ( server_errno=1236)
130629 12:08:33 [ERROR] Slave I/O: Got fatal error 1236 from master when reading data from binary log: 'Client requested master to start replication from impossible position', Error_code: 1236
130629 12:08:33 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.001501', position 144001931
130629 22:10:08 [Note] Error reading relay log event: slave SQL thread was killed
130629 22:10:12 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.001501' at position 144001931, relay log './mysqld-relay-bin.000296' position: 144002077
130629 22:10:12 [Note] Slave I/O thread: connected to master 'slave@10.10.0.236:3306',replication started in log 'mysql-bin.001501' at position 144001931
130629 22:10:12 [ERROR] Error reading packet from server: Client requested master to start replication from impossible position ( server_errno=1236)
130629 22:10:12 [ERROR] Slave I/O: Got fatal error 1236 from master when reading data from binary log: 'Client requested master to start replication from impossible position', Error_code: 1236
130629 22:10:12 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.001501', position 144001931

Attempt to change position location recovery: