MySQL主从失败 错误Got fatal error 1236

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[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,>　　
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>　　
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,>　　
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>
　　
130629 22:10:12 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.001501' at position 144001931,>　　
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