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SQL: replication from unversioned to versioned [fixes #94]

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This commit is contained in:
Aleksey Midenkov
2016-12-18 17:06:43 +00:00
parent ef10ef98ab
commit e45b85eb3e
5 changed files with 232 additions and 8 deletions
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72
mysql-test/suite/versioning/r/rpl_row.result
View File

@ -37,5 +37,77 @@ x
3
2
connection master;
create or replace table t1 (x int primary key) engine = innodb;
connection slave;
alter table t1 with system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
connection slave;
select * from t1;
x
2
select * from t1 for system_time all;
x
1
2
connection master;
delete from t1;
connection slave;
select * from t1;
x
select * from t1 for system_time all;
x
1
2
connection master;
create or replace table t1 (x int) engine = innodb;
connection slave;
alter table t1 with system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
connection slave;
select * from t1;
x
2
select * from t1 for system_time all;
x
2
1
connection master;
delete from t1;
connection slave;
select * from t1;
x
select * from t1 for system_time all;
x
2
1
connection master;
create or replace table t1 (x int primary key) with system versioning engine = innodb;
connection slave;
alter table t1 without system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
select * from t1 for system_time all;
x
1
2
connection slave;
select * from t1;
x
2
connection master;
delete from t1;
select * from t1 for system_time all;
x
1
2
connection slave;
select * from t1;
x
connection master;
drop table t1;
include/rpl_end.inc

72
mysql-test/suite/versioning/r/rpl_stmt.result
View File

@ -37,5 +37,77 @@ x
3
2
connection master;
create or replace table t1 (x int primary key) engine = innodb;
connection slave;
alter table t1 with system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
connection slave;
select * from t1;
x
2
select * from t1 for system_time all;
x
1
2
connection master;
delete from t1;
connection slave;
select * from t1;
x
select * from t1 for system_time all;
x
1
2
connection master;
create or replace table t1 (x int) engine = innodb;
connection slave;
alter table t1 with system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
connection slave;
select * from t1;
x
2
select * from t1 for system_time all;
x
2
1
connection master;
delete from t1;
connection slave;
select * from t1;
x
select * from t1 for system_time all;
x
2
1
connection master;
create or replace table t1 (x int primary key) with system versioning engine = innodb;
connection slave;
alter table t1 without system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
select * from t1 for system_time all;
x
1
2
connection slave;
select * from t1;
x
2
connection master;
delete from t1;
select * from t1 for system_time all;
x
1
2
connection slave;
select * from t1;
x
connection master;
drop table t1;
include/rpl_end.inc

57
mysql-test/suite/versioning/t/rpl_test.inc
View File

@ -29,5 +29,62 @@ sync_slave_with_master;
select * from t1;
select * from t1 for system_time all;
# check unversioned -> versioned replication
connection master;
create or replace table t1 (x int primary key) engine = innodb;
sync_slave_with_master;
alter table t1 with system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
sync_slave_with_master;
select * from t1;
select * from t1 for system_time all;
connection master;
delete from t1;
sync_slave_with_master;
select * from t1;
select * from t1 for system_time all;
# same thing (UPDATE, DELETE), but without PK
connection master;
create or replace table t1 (x int) engine = innodb;
sync_slave_with_master;
alter table t1 with system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
sync_slave_with_master;
select * from t1;
select * from t1 for system_time all;
connection master;
delete from t1;
sync_slave_with_master;
select * from t1;
select * from t1 for system_time all;
# same thing, but reverse: versioned -> unversioned
connection master;
create or replace table t1 (x int primary key) with system versioning engine = innodb;
sync_slave_with_master;
alter table t1 without system versioning;
connection master;
insert into t1 values (1);
update t1 set x= 2 where x = 1;
select * from t1 for system_time all;
sync_slave_with_master;
select * from t1;
connection master;
delete from t1;
select * from t1 for system_time all;
sync_slave_with_master;
select * from t1;
connection master;
drop table t1;

8
sql/handler.cc
View File

@ -6003,8 +6003,8 @@ int handler::ha_update_row(const uchar *old_data, uchar *new_data)
DBUG_ASSERT(new_data == table->record[0]);
DBUG_ASSERT(old_data == table->record[1]);
// InnoDB changes sys_trx_end to curr_trx_id and we need to restore MAX_TRX
if (table->file->check_table_binlog_row_based(1))
// it is important to keep 'old_data' intact for versioning to work correctly on slave side
if (table->file->check_table_binlog_row_based(1) && table->versioned())
memcpy(table->record[2], table->record[1], table->s->reclength);
MYSQL_UPDATE_ROW_START(table_share->db.str, table_share->table_name.str);
mark_trx_read_write();
@ -6017,7 +6017,9 @@ int handler::ha_update_row(const uchar *old_data, uchar *new_data)
if (likely(!error) && !row_already_logged)
{
rows_changed++;
if (table->file->check_table_binlog_row_based(1)) {
if (table->file->check_table_binlog_row_based(1))
{
if (table->versioned())
memcpy(table->record[1], table->record[2], table->s->reclength);
error= binlog_log_row(table, old_data, new_data, log_func);
}

29
sql/log_event.cc
View File

@ -12766,7 +12766,7 @@ uint8 Write_rows_log_event::get_trg_event_map()
Returns TRUE if different.
*/
static bool record_compare(TABLE *table)
static bool record_compare(TABLE *table, bool skip_sys_start)
{
bool result= FALSE;
/**
@ -12799,7 +12799,10 @@ static bool record_compare(TABLE *table)
/* Compare fields */
for (Field **ptr=table->field ; *ptr ; ptr++)
{
if (skip_sys_start && *ptr == table->vers_start_field())
{
continue;
}
/**
We only compare field contents that are not null.
NULL fields (i.e., their null bits) were compared
@ -12994,6 +12997,24 @@ int Rows_log_event::find_row(rpl_group_info *rgi)
prepare_record(table, m_width, FALSE);
error= unpack_current_row(rgi);
bool skip_sys_start= false;
if (table->versioned())
{
Field *sys_trx_end= table->vers_end_field();
DBUG_ASSERT(table->read_set);
bitmap_set_bit(table->read_set, sys_trx_end->field_index);
// master table is unversioned
if (sys_trx_end->val_int() == 0)
{
DBUG_ASSERT(table->write_set);
bitmap_set_bit(table->write_set, sys_trx_end->field_index);
sys_trx_end->set_max();
table->vers_start_field()->set_notnull();
skip_sys_start= true;
}
}
DBUG_PRINT("info",("looking for the following record"));
DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
@ -13169,7 +13190,7 @@ int Rows_log_event::find_row(rpl_group_info *rgi)
/* We use this to test that the correct key is used in test cases. */
DBUG_EXECUTE_IF("slave_crash_if_index_scan", abort(););
while (record_compare(table))
while (record_compare(table, skip_sys_start))
{
while ((error= table->file->ha_index_next(table->record[0])))
{
@ -13233,7 +13254,7 @@ int Rows_log_event::find_row(rpl_group_info *rgi)
goto end;
}
}
while (record_compare(table));
while (record_compare(table, skip_sys_start));
/*
Note: above record_compare will take into accout all record fields