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1864d9596d
Documentation of the feature can be found at: http://kb.askmonty.org/en/multi-source-replication/ This code is based on code from Taobao, developed by Plinux BUILD/SETUP.sh: Added -Wno-invalid-offsetof to get rid of warning of offsetof() on C++ class (safe in the contex we use it) client/mysqltest.cc: Added support for error names starting with 'W' Added connection_name support to --sync_with_master cmake/maintainer.cmake: Added -Wno-invalid-offsetof to get rid of warning of offsetof() on C++ class (safe in the contex we use it) mysql-test/r/mysqltest.result: Updated results mysql-test/r/parser.result: Updated results mysql-test/suite/multi_source/my.cnf: Setup of multi-master tests mysql-test/suite/multi_source/simple.result: Simple basic test of multi-source functionality mysql-test/suite/multi_source/simple.test: Simple basic test of multi-source functionality mysql-test/suite/multi_source/syntax.result: Test of multi-source syntax mysql-test/suite/multi_source/syntax.test: Test of multi-source syntax mysql-test/suite/rpl/r/rpl_rotate_logs.result: Updated results because of new error messages mysql-test/t/parser.test: Updated test as master_pos_wait() now takes more arguments than before sql/event_scheduler.cc: No reason to initialize slave_thread (it's guaranteed to be zero here) sql/item_create.cc: Added connection_name argument to master_pos_wait() Simplified code sql/item_func.cc: Added connection_name argument to master_pos_wait() sql/item_func.h: Added connection_name argument to master_pos_wait() sql/log.cc: Added tag "Master 'connection_name'" to slave errors that has a connection name. sql/mysqld.cc: Added variable mysqld_server_initialized so that other functions can test if server is fully initialized. Free all slave data in one place (fewer ifdef's) Removed not needed call to close_active_mi() Initialize slaves() later in startup to ensure that everthing is really initialized when slaves start. Made status variable slave_running multi-source safe sql/mysqld.h: Added mysqld_server_initialized sql/rpl_mi.cc: Store connection name and cmp_connection_name (only used for show full slave status) in Master_info Added code for Master_info_index, which handles storage of multi-master information Don't write the empty "" connection_name to multi-master.info file. This is handled by the original code. sql/rpl_mi.h: Added connection_name and Master_info_index sql/rpl_rli.cc: Added connection_name to relay log files. sql/rpl_rli.h: Fixed type of slave_skip_counter as we now access it directly in sys_vars.cc, so it must be uint sql/share/errmsg-utf8.txt: Added new error messages needed for multi-source Added multi-source name to error ER_MASTER_INFO and WARN_NO_MASTER_INFO sql/slave.cc: Moved things a bit around to make it easier to handle error conditions. Create a global master_info_index and add the "" connection to it Ensure that new Master_info doesn't fail. Don't call terminate_slave_threads(active_mi..) on end_slave() as this is now done automaticly when deleting master_info_index. Delete not needed function close_active_mi(). One can achive same thing by calling end_slave(). Added support for SHOW FULL SLAVE STATUS (show status for all master connections with connection_name as first column) sql/slave.h: Added new prototypes sql/sql_base.cc: More DBUG_PRINT sql/sql_class.cc: Reset thd->connection_name and thd-->default_master_connection sql/sql_class.h: Added thd->connection_name and thd-->default_master_connection Added slave_skip_count to variables to make changing the @@sql_slave_skip_count variable thread safe sql/sql_const.h: Added MAX_CONNECTION_NAME sql/sql_lex.cc: Reset 'lex->verbose' (to simplify some sql_yacc.yy code) sql/sql_lex.h: Added connection_name sql/sql_parse.cc: Added support for connection_name to all SLAVE commands. - Instead of using active_mi, we now get the current Master_info from master_info_index. - Create new replication threads with CHANGE MASTER - Added support for show_all_master_info() sql/sql_reload.cc: Made reset/full slave use master_info_index->get_master_info() instead of active_mi. If one uses 'RESET SLAVE "connection_name" all' the connection is removed from master_info_index. sql/sql_repl.cc: sql_slave_skip_counter is moved to thd->variables to make it thread safe and fix some bugs with it Add connection name to relay log files. Added connection name to errors. Added some logging for multi-master if log_warnings > 1 stop_slave(): - Don't check if thd is set. It's guaranteed to always be set. change_master(): - Check for duplicate connection names in change_master() - Check for wrong arguments first in file (to simplify error handling) - Register new connections in master_info_index sql/sql_yacc.yy: Added optional connection_name to a all relevant master/slave commands sql/strfunc.cc: my_global.h shoud always be included first. sql/sys_vars.cc: Added variable default_master_connection Made variable sql_slave_skip_counter multi-source safe sql/sys_vars.h: Added Sys_var_session_lexstring (needed for default_master_connection) Added Sys_var_multi_source_uint (needed for sql_slave_skip_counter).
90 lines
6.2 KiB
Plaintext
90 lines
6.2 KiB
Plaintext
include/master-slave.inc
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[connection master]
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show slave status;
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Slave_IO_State 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 Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id
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show slave '' status;
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Slave_IO_State 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 Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id
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show full slave status;
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Connection_name Slave_IO_State 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 Replicate_Do_Table Replicate_Ignore_Table Replicate_Wild_Do_Table Replicate_Wild_Ignore_Table Last_Errno Last_Error Skip_Counter Exec_Master_Log_Pos Relay_Log_Space Until_Condition Until_Log_File Until_Log_Pos Master_SSL_Allowed Master_SSL_CA_File Master_SSL_CA_Path Master_SSL_Cert Master_SSL_Cipher Master_SSL_Key Seconds_Behind_Master Master_SSL_Verify_Server_Cert Last_IO_Errno Last_IO_Error Last_SQL_Errno Last_SQL_Error Replicate_Ignore_Server_Ids Master_Server_Id
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#
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# Check error handling
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#
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show slave 'qqq' status;
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ERROR HY000: There is no master connection 'qqq'
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show slave 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc' status;
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ERROR HY000: There is no master connection 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'
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show slave 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc' status;
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ERROR HY000: Incorrect arguments to MASTER_CONNECTION_NAME
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change master 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc' to master_host='dummy';
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ERROR HY000: Incorrect arguments to MASTER_CONNECTION_NAME
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start slave 'qqq';
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ERROR HY000: There is no master connection 'qqq'
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stop slave 'qqq';
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ERROR HY000: There is no master connection 'qqq'
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slave 'qqq' start;
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ERROR HY000: There is no master connection 'qqq'
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slave 'qqq' stop;
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ERROR HY000: There is no master connection 'qqq'
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flush slave 'qqq';
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ERROR HY000: There is no master connection 'qqq'
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reset slave 'qqq';
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ERROR HY000: There is no master connection 'qqq'
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select master_pos_wait('master-bin.999999',0,2,'qqq');
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master_pos_wait('master-bin.999999',0,2,'qqq')
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NULL
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Warnings:
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Warning 1617 There is no master connection 'qqq'
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select master_pos_wait('master-bin.999999',0,2,'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc');
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master_pos_wait('master-bin.999999',0,2,'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc')
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NULL
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Warnings:
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Warning 1210 Incorrect arguments to MASTER_CONNECTION_NAME
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#
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# checking usage of default_master_connection;
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#
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select @@default_master_connection;
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@@default_master_connection
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select @@global.default_master_connection;
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ERROR HY000: Variable 'default_master_connection' is a SESSION variable
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set @@global.default_master_connection='qqq';
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ERROR HY000: Variable 'default_master_connection' is a SESSION variable and can't be used with SET GLOBAL
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set @@default_master_connection='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc';
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ERROR 42000: Variable 'default_master_connection' can't be set to the value of 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'
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select @@default_master_connection;
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@@default_master_connection
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set @@default_master_connection='qqq';
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select @@default_master_connection;
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@@default_master_connection
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qqq
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show variables like "default_master_connection";
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Variable_name Value
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default_master_connection qqq
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show slave status;
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ERROR HY000: There is no master connection 'qqq'
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select master_pos_wait('master-bin.999999',0,2);
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master_pos_wait('master-bin.999999',0,2)
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NULL
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Warnings:
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Warning 1617 There is no master connection 'qqq'
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set @@default_master_connection='';
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select master_pos_wait('master-bin.999999',0,2);
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master_pos_wait('master-bin.999999',0,2)
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-1
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set @@default_master_connection='';
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#
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# checking variables
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#
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show status like "Slave_running";
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Variable_name Value
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Slave_running ON
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set @@default_master_connection='qqq';
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show status like "Slave_running";
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Variable_name Value
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Slave_running OFF
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Warnings:
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Warning 1617 There is no master connection 'qqq'
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set @@default_master_connection='';
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include/rpl_end.inc
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