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537c23e833
This patch adds the ability to store extra field metadata in the table map event. This data can include pack_length() or field_lenght() for fields such as CHAR or VARCHAR enabling developers to add code that can check for compatibilty between master and slave columns. More importantly, the extra field metadata can be used to store data from the master correctly should a VARCHAR field on the master be <= 255 bytes while the same field on the slave is > 255 bytes. The patch also includes the needed changes to unpack to ensure that data which is smaller on the master can be unpacked correctly on the slave. WL#3915 : (NDB) master's cols > slave Slave starts accepting and handling rows of master's tables which have more columns. The most important part of implementation is how to caclulate the amount of bytes to skip for unknown by slave column.
294 lines
7 KiB
Text
294 lines
7 KiB
Text
stop slave;
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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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start slave;
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stop slave;
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reset master;
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reset slave;
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reset master;
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create table t1(n int not null auto_increment primary key)ENGINE=MyISAM;
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insert into t1 values (NULL);
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drop table t1;
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create table t1 (word char(20) not null)ENGINE=MyISAM;
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load data infile '../std_data_ln/words.dat' into table t1 ignore 1 lines;
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select count(*) from t1;
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count(*)
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69
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show binlog events;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Format_desc 1 # Server ver: VERSION, Binlog ver: 4
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master-bin.000001 # Query 1 # use `test`; create table t1(n int not null auto_increment primary key)ENGINE=MyISAM
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master-bin.000001 # Table_map 1 # table_id: # (test.t1)
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master-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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master-bin.000001 # Query 1 # use `test`; drop table t1
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master-bin.000001 # Query 1 # use `test`; create table t1 (word char(20) not null)ENGINE=MyISAM
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master-bin.000001 # Table_map 1 # table_id: # (test.t1)
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master-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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show binlog events from 106 limit 1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; create table t1(n int not null auto_increment primary key)ENGINE=MyISAM
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show binlog events from 106 limit 2;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query 1 # use `test`; create table t1(n int not null auto_increment primary key)ENGINE=MyISAM
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master-bin.000001 # Table_map 1 # table_id: # (test.t1)
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show binlog events from 106 limit 2,1;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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flush logs;
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create table t3 (a int)ENGINE=MyISAM;
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select * from t1 order by 1 asc;
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word
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Aarhus
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Aaron
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Aaron
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Ababa
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Ababa
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aback
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aback
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abaft
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abaft
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abandon
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abandon
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abandoned
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abandoned
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abandoning
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abandoning
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abandonment
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abandonment
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abandons
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abandons
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abase
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abased
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abasement
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abasements
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abases
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abash
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abashed
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abashes
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abashing
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abasing
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abate
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abated
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abatement
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abatements
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abater
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abates
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abating
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Abba
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abbe
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abbey
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abbeys
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abbot
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abbots
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Abbott
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abbreviate
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abbreviated
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abbreviates
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abbreviating
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abbreviation
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abbreviations
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Abby
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abdomen
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abdomens
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abdominal
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abduct
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abducted
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abduction
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abductions
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abductor
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abductors
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abducts
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Abe
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abed
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Abel
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Abelian
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Abelson
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Aberdeen
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Abernathy
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aberrant
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aberration
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start slave;
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let $result_pattern= '%127.0.0.1%root%master-bin.000002%slave-relay-bin.000005%Yes%Yes%0%0%None%' ;
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--source include/wait_slave_status.inc
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select * from t1 order by 1 asc;
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word
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Aarhus
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Aaron
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Aaron
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Ababa
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Ababa
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aback
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aback
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abaft
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abaft
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abandon
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abandon
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abandoned
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abandoned
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abandoning
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abandoning
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abandonment
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abandonment
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abandons
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abandons
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abase
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abased
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abasement
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abasements
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abases
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abash
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abashed
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abashes
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abashing
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abasing
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abate
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abated
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abatement
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abatements
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abater
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abates
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abating
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Abba
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abbe
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abbey
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abbeys
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abbot
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abbots
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Abbott
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abbreviate
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abbreviated
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abbreviates
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abbreviating
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abbreviation
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abbreviations
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Abby
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abdomen
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abdomens
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abdominal
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abduct
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abducted
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abduction
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abductions
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abductor
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abductors
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abducts
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Abe
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abed
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Abel
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Abelian
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Abelson
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Aberdeen
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Abernathy
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aberrant
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aberration
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flush logs;
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stop slave;
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create table t2 (n int)ENGINE=MyISAM;
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insert into t2 values (1);
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show binlog events from <binlog_start>;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Query # # use `test`; create table t1(n int not null auto_increment primary key)ENGINE=MyISAM
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Query # # use `test`; drop table t1
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master-bin.000001 # Query # # use `test`; create table t1 (word char(20) not null)ENGINE=MyISAM
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Rotate # # master-bin.000002;pos=4
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show binlog events in 'master-bin.000002';
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000002 # Format_desc 1 # Server ver: VERSION, Binlog ver: 4
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master-bin.000002 # Query 1 # use `test`; create table t3 (a int)ENGINE=MyISAM
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master-bin.000002 # Query 1 # use `test`; create table t2 (n int)ENGINE=MyISAM
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master-bin.000002 # Table_map 1 # table_id: # (test.t2)
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master-bin.000002 # Write_rows 1 # table_id: # flags: STMT_END_F
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show binary logs;
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Log_name File_size
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master-bin.000001 1266
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master-bin.000002 379
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start slave;
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show binary logs;
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Log_name File_size
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slave-bin.000001 1364
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slave-bin.000002 280
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show binlog events in 'slave-bin.000001' from 4;
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Log_name Pos Event_type Server_id End_log_pos Info
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slave-bin.000001 # Format_desc 2 # Server ver: VERSION, Binlog ver: 4
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slave-bin.000001 # Query 1 # use `test`; create table t1(n int not null auto_increment primary key)ENGINE=MyISAM
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slave-bin.000001 # Table_map 1 # table_id: # (test.t1)
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slave-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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slave-bin.000001 # Query 1 # use `test`; drop table t1
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slave-bin.000001 # Query 1 # use `test`; create table t1 (word char(20) not null)ENGINE=MyISAM
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slave-bin.000001 # Table_map 1 # table_id: # (test.t1)
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slave-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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slave-bin.000001 # Query 1 # use `test`; create table t3 (a int)ENGINE=MyISAM
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slave-bin.000001 # Rotate 2 # slave-bin.000002;pos=4
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show binlog events in 'slave-bin.000002' from 4;
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Log_name Pos Event_type Server_id End_log_pos Info
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slave-bin.000002 # Format_desc 2 # Server ver: VERSION, Binlog ver: 4
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slave-bin.000002 # Query 1 # use `test`; create table t2 (n int)ENGINE=MyISAM
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slave-bin.000002 # Table_map 1 # table_id: # (test.t2)
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slave-bin.000002 # Write_rows 1 # table_id: # flags: STMT_END_F
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SHOW SLAVE STATUS;
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Slave_IO_State #
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Master_Host 127.0.0.1
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Master_User root
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Master_Port MASTER_PORT
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Connect_Retry 1
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Master_Log_File master-bin.000002
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Read_Master_Log_Pos 379
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Relay_Log_File #
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Relay_Log_Pos #
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Relay_Master_Log_File master-bin.000002
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Slave_IO_Running Yes
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Slave_SQL_Running Yes
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Replicate_Do_DB
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Replicate_Ignore_DB
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Replicate_Do_Table
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Replicate_Ignore_Table #
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Replicate_Wild_Do_Table
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Replicate_Wild_Ignore_Table
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Last_Errno 0
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Last_Error
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Skip_Counter 0
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Exec_Master_Log_Pos 379
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Relay_Log_Space #
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Until_Condition None
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Until_Log_File
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Until_Log_Pos 0
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Master_SSL_Allowed No
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Master_SSL_CA_File
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Master_SSL_CA_Path
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Master_SSL_Cert
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Master_SSL_Cipher
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Master_SSL_Key
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Seconds_Behind_Master #
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Master_SSL_Verify_Server_Cert No
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Last_IO_Errno #
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Last_IO_Error #
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Last_SQL_Errno 0
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Last_SQL_Error
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show binlog events in 'slave-bin.000005' from 4;
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ERROR HY000: Error when executing command SHOW BINLOG EVENTS: Could not find target log
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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 auto_increment primary key, b int);
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insert into t1 values (NULL, 1);
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reset master;
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set insert_id=5;
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insert into t1 values (NULL, last_insert_id()), (NULL, last_insert_id());
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show binlog events from <binlog_start>;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
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select * from t1;
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a b
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1 1
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5 1
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6 1
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drop table t1;
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