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IB, SQL: (0.4) COMMIT_ID-based ordering of transactions

Browse Source 
IB:
* removed CONCURR_TRX from VTQ;
* new fields in VTQ: COMMIT_ID, ISO_LEVEL.

SQL:
* renamed BEGIN_TS, COMMIT_TS to VTQ_BEGIN_TS, VTQ_COMMIT_TS;
* new functions: VTQ_COMMIT_ID, VTQ_ISO_LEVEL, VTQ_TRX_ID, VTQ_TRX_SEES, VTQ_TRX_SEES_EQ;
* versioned SELECT for IB uses VTQ_TRX_SEES, VTQ_TRX_SEES_EQ.

Closes #71
This commit is contained in:
Aleksey Midenkov
2016-11-14 06:14:28 +00:00
parent 07cc46acea
commit d54d36c45e
35 changed files with 1247 additions and 352 deletions
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79
mysql-test/suite/versioning/t/commit_id.test Normal file
View File

@@ -0,0 +1,79 @@
-- source suite/versioning/common.inc
create table t1(
id int auto_increment primary key)
with system versioning
engine innodb;
# VTQ_ISO_LEVEL #
set transaction isolation level read uncommitted;
insert into t1 values ();
select iso_level = 'RU' from information_schema.innodb_vtq limit 1;
set transaction isolation level read committed;
insert into t1 values ();
select iso_level = 'RC' from information_schema.innodb_vtq limit 1;
set transaction isolation level serializable;
insert into t1 values ();
select iso_level = 'S' from information_schema.innodb_vtq limit 1;
set transaction isolation level repeatable read;
insert into t1 values ();
select iso_level = 'RR' from information_schema.innodb_vtq limit 1;
# VTQ_TRX_ID, VTQ_COMMIT_ID, VTQ_TRX_SEES #
set @ts0= now(6);
insert into t1 values ();
select sys_trx_start from t1 where id = last_insert_id() into @tx0;
select trx_id = @tx0 from information_schema.innodb_vtq limit 1;
set @ts1= now(6);
insert into t1 values ();
select sys_trx_start from t1 where id = last_insert_id() into @tx1;
select trx_id = @tx1 from information_schema.innodb_vtq limit 1;
set @ts2= now(6);
insert into t1 values ();
select sys_trx_start from t1 where id = last_insert_id() into @tx2;
select trx_id = @tx2 from information_schema.innodb_vtq limit 1;
set @ts3= now(6);
select
vtq_trx_id(@ts0) < @tx0 as A,
vtq_trx_id(@ts0, true) = @tx0 as B,
vtq_trx_id(@ts1) = @tx0 as C,
vtq_trx_id(@ts1, true) = @tx1 as D,
vtq_trx_id(@ts2) = @tx1 as E,
vtq_trx_id(@ts2, true) = @tx2 as F,
vtq_trx_id(@ts3) = @tx2 as G,
vtq_trx_id(@ts3, true) is null as H;
select
vtq_commit_id(@ts0) < @tx0 as A,
vtq_commit_id(@ts0, true) = vtq_commit_id(null, @tx0) as B,
vtq_commit_id(@ts1) = vtq_commit_id(null, @tx0) as C,
vtq_commit_id(@ts1, true) = vtq_commit_id(null, @tx1) as D,
vtq_commit_id(@ts2) = vtq_commit_id(null, @tx1) as E,
vtq_commit_id(@ts2, true) = vtq_commit_id(null, @tx2) as F,
vtq_commit_id(@ts3) = vtq_commit_id(null, @tx2) as G,
vtq_commit_id(@ts3, true) is null as H;
select
vtq_trx_sees(@tx1, @tx0) as A,
not vtq_trx_sees(@tx0, @tx1) as B,
vtq_trx_sees_eq(@tx1, @tx1) as C,
not vtq_trx_sees(@tx1, @tx1) as D,
vtq_trx_sees(@tx2, 0) as E,
vtq_trx_sees(0, @tx2) is null as F,
vtq_trx_sees(-1, @tx2) as H;
drop table t1;
call verify_vtq;
drop procedure verify_vtq;