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Commit d02a77bc authored by Sachin Setiya's avatar Sachin Setiya
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MDEV-11636 Extra persistent columns on slave always gets NULL in RBR 

Problem:- In replication if slave has extra persistent column then these
column are not computed while applying write-set from master.

Solution:- While applying row events from server, we will generate values
for extra persistent columns.
parent 37f294fe
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mysql-test/suite/rpl/r/rpl_alter_extra_persistent.result 0 → 100644
View file @ d02a77bc
include/master-slave.inc
[connection master]
connection master;
create table t1(a int primary key);
insert into t1 values(1);
insert into t1 values(2);
insert into t1 values(3);
insert into t1 values(4);
connection slave;
select * from t1 order by a;
a
1
2
3
4
alter table t1 add column z1 int as(a+1) virtual, add column z2 int as (a+2) persistent;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
connection master;
insert into t1 values(5);
insert into t1 values(6);
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#UPDATE query
connection master;
update t1 set a = a+10;
select * from t1 order by a;
a
11
12
13
14
15
16
connection slave;
select * from t1 order by a;
a z1 z2
11 12 13
12 13 14
13 14 15
14 15 16
15 16 17
16 17 18
connection master;
update t1 set a = a-10;
select * from t1 order by a;
a
1
2
3
4
5
6
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#DELETE quert
connection master;
delete from t1 where a > 2 and a < 4;
select * from t1 order by a;
a
1
2
4
5
6
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
4 5 6
5 6 7
6 7 8
#REPLACE query
connection master;
replace into t1 values(1);
replace into t1 values(3);
replace into t1 values(1);
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#SELECT query
connection master;
select * from t1 where a > 2 and a < 4;
a
3
connection slave;
select * from t1 where a > 2 and a < 4;
a z1 z2
3 4 5
#UPDATE with SELECT query
connection master;
update t1 set a = a + 10 where a > 2 and a < 4;
select * from t1 order by a;
a
1
2
4
5
6
13
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
4 5 6
5 6 7
6 7 8
13 14 15
connection master;
update t1 set a = a - 10 where a = 13;
select * from t1 order by a;
a
1
2
3
4
5
6
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
#Break Unique Constraint
alter table t1 add column z4 int as (a % 6) persistent unique;
connection master;
#entering duplicate value for slave persistent column
insert into t1 values(7);
select * from t1 order by a;
a
1
2
3
4
5
6
7
connection slave;
include/wait_for_slave_sql_error.inc [errno=1062]
connection slave;
connection slave;
select * from t1 order by a;
a z1 z2 z4
1 2 3 1
2 3 4 2
3 4 5 3
4 5 6 4
5 6 7 5
6 7 8 0
alter table t1 drop column z4;
start slave;
include/wait_for_slave_sql_to_start.inc
connection slave;
connection slave;
connection master;
connection slave;
select * from t1 order by a;
a z1 z2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
7 8 9
connection master;
select * from t1 order by a;
a
1
2
3
4
5
6
7
drop table t1;
include/rpl_end.inc
connection server_2;
connection server_2;
connection server_2;
connection server_2;
connection server_1;
connection server_1;
connection server_1;
connection server_2;
connection server_1;
connection server_2;
connection server_2;
connection server_1;
connection server_1;
mysql-test/suite/rpl/t/rpl_alter_extra_persistent.test 0 → 100644
View file @ d02a77bc
--source include/master-slave.inc
--source include/have_binlog_format_row.inc
--enable_connect_log
--connection master
create table t1(a int primary key);
insert into t1 values(1);
insert into t1 values(2);
insert into t1 values(3);
insert into t1 values(4);
--sync_slave_with_master
select * from t1 order by a;
alter table t1 add column z1 int as(a+1) virtual, add column z2 int as (a+2) persistent;
select * from t1 order by a;
--connection master
insert into t1 values(5);
insert into t1 values(6);
--sync_slave_with_master
select * from t1 order by a;
--echo #UPDATE query
--connection master
update t1 set a = a+10;
select * from t1 order by a;
--sync_slave_with_master
select * from t1 order by a;
--connection master
update t1 set a = a-10;
select * from t1 order by a;
--sync_slave_with_master
select * from t1 order by a;
--echo #DELETE quert
--connection master
delete from t1 where a > 2 and a < 4;
select * from t1 order by a;
--sync_slave_with_master
select * from t1 order by a;
--echo #REPLACE query
--connection master
replace into t1 values(1);
replace into t1 values(3);
replace into t1 values(1);
--sync_slave_with_master
select * from t1 order by a;
--echo #SELECT query
--connection master
select * from t1 where a > 2 and a < 4;
--connection slave
select * from t1 where a > 2 and a < 4;
--echo #UPDATE with SELECT query
--connection master
update t1 set a = a + 10 where a > 2 and a < 4;
select * from t1 order by a;
--sync_slave_with_master
select * from t1 order by a;
--connection master
update t1 set a = a - 10 where a = 13;
select * from t1 order by a;
--sync_slave_with_master
select * from t1 order by a;
--echo #Break Unique Constraint
alter table t1 add column z4 int as (a % 6) persistent unique;
--connection master
--echo #entering duplicate value for slave persistent column
insert into t1 values(7);
select * from t1 order by a;
--connection slave
--let $slave_sql_errno= 1062
--source include/wait_for_slave_sql_error.inc
select * from t1 order by a;
alter table t1 drop column z4;
start slave;
--source include/wait_for_slave_sql_to_start.inc
--connection master
--sync_slave_with_master
select * from t1 order by a;
--connection master
select * from t1 order by a;
drop table t1;
--source include/rpl_end.inc
sql/rpl_record.cc
View file @ d02a77bc
......@@ -389,6 +389,12 @@ unpack_row(rpl_group_info *rgi,
}
}
/*
Add Extra slave persistent columns
*/
if ((error= fill_extra_persistent_columns(table, cols->n_bits)))
DBUG_RETURN(error);
/*
We should now have read all the null bytes, otherwise something is
really wrong.
......@@ -461,5 +467,30 @@ int prepare_record(TABLE *const table, const uint skip, const bool check)
DBUG_RETURN(0);
}
/**
Fills @c table->record[0] with computed values of extra persistent column which are present on slave but not on master.
@param table Table whose record[0] buffer is prepared.
@param master_cols No of columns on master
@returns 0 on success
*/
int fill_extra_persistent_columns(TABLE *table, int master_cols)
{
int error= 0;
Field **vfield_ptr, *vfield;
if (!table->vfield)
return 0;
for (vfield_ptr= table->vfield; *vfield_ptr; ++vfield_ptr)
{
vfield= *vfield_ptr;
if (vfield->field_index >= master_cols && vfield->stored_in_db)
{
/*Set bitmap for writing*/
bitmap_set_bit(table->vcol_set, vfield->field_index);
error= vfield->vcol_info->expr_item->save_in_field(vfield,0);
bitmap_clear_bit(table->vcol_set, vfield->field_index);
}
}
return error;
}
#endif // HAVE_REPLICATION
sql/rpl_record.h
View file @ d02a77bc
......@@ -38,6 +38,7 @@ int unpack_row(rpl_group_info *rgi,
// Fill table's record[0] with default values.
int prepare_record(TABLE *const table, const uint skip, const bool check);
int fill_extra_persistent_columns(TABLE *table, int master_cols);
#endif
#endif
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