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80649ee874
"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.
mysql-test/r/rpl_loaddata.result:
Now, after CHANGE MASTER the coordinates of the I/O thread are the last ones of the SQL thread, so result update.
sql/sql_repl.cc:
Fix for BUG#1870
"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).
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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