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set default_storage_engine=innodb;
#
# MDEV-22761 KILL QUERY during rowid_filter, crashes
#
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2(a int);
insert into t2 select A.a + B.a* 10 from t0 A, t0 B;
CREATE TABLE t3 (
key1 int ,
key2 int,
filler varchar(255),
KEY (key1),
KEY (key2)
);
select engine from information_schema.tables
where table_schema=database() and table_name='t3';
engine
InnoDB
insert into t3
select
A.a,
B.a,
'filler-data-filler-data'
from
t2 A, t2 B;
analyze table t2,t3;
Table Op Msg_type Msg_text
test.t2 analyze status Engine-independent statistics collected
test.t2 analyze status OK
test.t3 analyze status Engine-independent statistics collected
test.t3 analyze status OK
explain
select * from t2, t3
where
t3.key1=t2.a and t3.key2 in (2,3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 100 Using where
1 SIMPLE t3 ref|filter key1,key2 key1|key2 5|5 test.t2.a 100 (2%) Using where; Using rowid filter
set debug_sync='handler_rowid_filter_check SIGNAL at_rowid_filter_check WAIT_FOR go';
select * from t2, t3
where
t3.key1=t2.a and t3.key2 in (2,3);
connect con1, localhost, root,,;
connection con1;
set debug_sync='now WAIT_FOR at_rowid_filter_check';
kill query $target_id;
set debug_sync='now SIGNAL go';
connection default;
disconnect con1;
ERROR 70100: Query execution was interrupted
set debug_sync='RESET';
drop table t0,t2,t3;
set default_storage_engine=default;
set @save_optimizer_switch= @@optimizer_switch;
set @save_use_stat_tables= @@use_stat_tables;
set @save_optimizer_use_condition_selectivity= @@optimizer_use_condition_selectivity;
set @@use_stat_tables=preferably;
set optimizer_use_condition_selectivity=2;
set optimizer_switch='rowid_filter=on';
#
# MDEV-22761 KILL QUERY during rowid_filter, crashes
# (The smaller testcase)
#
CREATE TABLE t1 (a INT, b INT, INDEX(a), INDEX(b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (0,0),(1,0),(-1,1), (-2,1), (-2,3), (-3,4), (-2,4);
set debug_sync='handler_rowid_filter_check SIGNAL killme WAIT_FOR go';
SELECT * FROM t1 WHERE a > 0 AND b=0;
connect con1, localhost, root,,;
connection con1;
set debug_sync='now WAIT_FOR killme';
kill query @id;
set debug_sync='now SIGNAL go';
connection default;
ERROR 70100: Query execution was interrupted
set debug_sync='RESET';
disconnect con1;
drop table t1;
set @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
set @@optimizer_switch=@save_optimizer_switch;
set @@use_stat_tables=@save_use_stat_tables;
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