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"CHANGE MASTER makes SQL thread restart from coordinates of I/O thread".
So, in CHANGE MASTER:
when it seems reasonable that the user did not want to discontinue
its replication (i.e. when he is not specifying host or port or master_log_file
or master_log_pos; this will be documented), set the coordinates of the
I/O thread to those of the SQL thread. This way, the SQL thread will see
no discontinuity in the relay log (i.e. will skip no events), because
the I/O thread will fill the brand new relay log with the events which
are just after the position where the SQL thread had stopped
(before CHANGE MASTER was issued).
And a new test for this bug.
68 lines
3.1 KiB
Text
68 lines
3.1 KiB
Text
slave stop;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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slave start;
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reset master;
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create table t1(a int not null auto_increment, b int, primary key(a) );
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load data infile '../../std_data/rpl_loaddata.dat' into table t1;
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create temporary table t2 (day date,id int(9),category enum('a','b','c'),name varchar(60));
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load data infile '../../std_data/rpl_loaddata2.dat' into table t2 fields terminated by ',' optionally enclosed by '%' escaped by '@' lines terminated by '\n##\n' starting by '>' ignore 1 lines;
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create table t3 (day date,id int(9),category enum('a','b','c'),name varchar(60));
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insert into t3 select * from t2;
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select * from t1;
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a b
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1 10
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2 15
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select * from t3;
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day id category name
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2003-02-22 2461 b a a a @ % ' " a
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2003-03-22 2161 c asdf
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2003-03-22 2416 a bbbbb
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show master status;
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File Position Binlog_do_db Binlog_ignore_db
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slave-bin.001 964
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drop table t1;
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drop table t2;
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drop table t3;
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create table t1(a int, b int, unique(b));
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insert into t1 values(1,10);
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load data infile '../../std_data/rpl_loaddata.dat' into table t1;
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set global sql_slave_skip_counter=1;
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start slave;
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show slave status;
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Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos Relay_log_space
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127.0.0.1 root MASTER_PORT 1 master-bin.001 1311 slave-relay-bin.002 1352 master-bin.001 Yes Yes 0 0 1311 1352
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set sql_log_bin=0;
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delete from t1;
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set sql_log_bin=1;
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load data infile '../../std_data/rpl_loaddata.dat' into table t1;
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stop slave;
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change master to master_user='test';
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change master to master_user='root';
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show slave status;
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Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos Relay_log_space
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127.0.0.1 root MASTER_PORT 1 master-bin.001 1419 slave-relay-bin.001 4 master-bin.001 No No 0 0 1419 4
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set global sql_slave_skip_counter=1;
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start slave;
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set sql_log_bin=0;
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delete from t1;
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set sql_log_bin=1;
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load data infile '../../std_data/rpl_loaddata.dat' into table t1;
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stop slave;
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reset slave;
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show slave status;
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Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos Relay_log_space
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127.0.0.1 root MASTER_PORT 1 4 slave-relay-bin.001 4 No No 0 0 0 4
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reset master;
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create table t2 (day date,id int(9),category enum('a','b','c'),name varchar(60),
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unique(day));
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load data infile '../../std_data/rpl_loaddata2.dat' into table t2 fields
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terminated by ',' optionally enclosed by '%' escaped by '@' lines terminated by
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'\n##\n' starting by '>' ignore 1 lines;
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Duplicate entry '2003-03-22' for key 1
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show master status;
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File Position Binlog_do_db Binlog_ignore_db
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master-bin.001 491
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drop table t2;
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