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MDEV-25546 LIMIT partitioning does not respect ROLLBACK

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vers_info->hist_part retained stale value after ROLLBACK. The
algorithm in vers_set_hist_part() continued iteration from that value.

The simplest solution is to process partitions each time from start
for LIMIT in vers_set_hist_part().
This commit is contained in:
Aleksey Midenkov
2022-04-22 15:49:37 +03:00
parent 4d11290065
commit 88a9f13a90
3 changed files with 86 additions and 5 deletions
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41
mysql-test/suite/versioning/r/partition.result
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@@ -1,3 +1,5 @@
set @save_persistent=@@global.innodb_stats_persistent;
set global innodb_stats_persistent= 0;
set system_versioning_alter_history=keep;
# Check conventional partitioning on temporal tables
create or replace table t1 (
@@ -799,4 +801,43 @@ delete from t1 partition (p0, p1, pn);
ERROR HY000: Not allowed for system-versioned table `test`.`t1`
drop table t1;
set timestamp= default;
#
# MDEV-25546 LIMIT partitioning does not respect ROLLBACK
#
create or replace table t1 (pk int primary key)
with system versioning engine innodb
partition by system_time limit 100 (
partition p0 history,
partition p1 history,
partition pn current);
insert into t1 select seq from seq_1_to_90;
start transaction;
replace into t1 select seq from seq_1_to_80;
replace into t1 select seq from seq_1_to_70;
replace into t1 select seq from seq_1_to_60;
select partition_name, table_rows
from information_schema.partitions
where table_name = 't1';
partition_name table_rows
p0 150
p1 60
pn 90
rollback;
select partition_name, table_rows
from information_schema.partitions
where table_name = 't1';
partition_name table_rows
p0 0
p1 0
pn 90
replace into t1 select seq from seq_1_to_10;
select partition_name, table_rows
from information_schema.partitions
where table_name = 't1';
partition_name table_rows
p0 10
p1 0
pn 90
drop table t1;
# End of 10.3 tests
set global innodb_stats_persistent= @save_persistent;