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Merge chilla.local:/home/mydev/mysql-5.0-bug14400

Browse Source 
into  chilla.local:/home/mydev/mysql-5.1-bug14400
This commit is contained in:
istruewing@chilla.local
2006-09-07 22:07:52 +02:00
parent 1a8c9130db 50192889a4
commit aeae764e64
3 changed files with 98 additions and 20 deletions
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28
mysql-test/r/myisam.result
View File

@ -515,6 +515,34 @@ select c1 from t1 order by c1 limit 1;
c1
a
drop table t1;
create table t1 (a int not null, primary key(a));
create table t2 (a int not null, b int not null, primary key(a,b));
insert into t1 values (1),(2),(3),(4),(5),(6);
insert into t2 values (1,1),(2,1);
lock tables t1 read local, t2 read local;
select straight_join * from t1,t2 force index (primary) where t1.a=t2.a;
a a b
1 1 1
2 2 1
insert into t2 values(2,0);
select straight_join * from t1,t2 force index (primary) where t1.a=t2.a;
a a b
1 1 1
2 2 1
drop table t1,t2;
CREATE TABLE t1 (c1 varchar(250) NOT NULL);
CREATE TABLE t2 (c1 varchar(250) NOT NULL, PRIMARY KEY (c1));
INSERT INTO t1 VALUES ('test000001'), ('test000002'), ('test000003');
INSERT INTO t2 VALUES ('test000002'), ('test000003'), ('test000004');
LOCK TABLES t1 READ LOCAL, t2 READ LOCAL;
SELECT t1.c1 AS t1c1, t2.c1 AS t2c1 FROM t1, t2
WHERE t1.c1 = t2.c1 HAVING t1c1 != t2c1;
t1c1 t2c1
INSERT INTO t2 VALUES ('test000001'), ('test000005');
SELECT t1.c1 AS t1c1, t2.c1 AS t2c1 FROM t1, t2
WHERE t1.c1 = t2.c1 HAVING t1c1 != t2c1;
t1c1 t2c1
DROP TABLE t1,t2;
CREATE TABLE t1 (`a` int(11) NOT NULL default '0', `b` int(11) NOT NULL default '0', UNIQUE KEY `a` USING RTREE (`a`,`b`)) ENGINE=MyISAM;
Got one of the listed errors
create table t1 (a int, b varchar(200), c text not null) checksum=1;

36
mysql-test/t/myisam.test
View File

@ -488,6 +488,42 @@ insert into t1 values ('a'), ('b');
select c1 from t1 order by c1 limit 1;
drop table t1;
#
# Bug #14400 Join could miss concurrently inserted row
#
# Partial key.
create table t1 (a int not null, primary key(a));
create table t2 (a int not null, b int not null, primary key(a,b));
insert into t1 values (1),(2),(3),(4),(5),(6);
insert into t2 values (1,1),(2,1);
lock tables t1 read local, t2 read local;
select straight_join * from t1,t2 force index (primary) where t1.a=t2.a;
connect (root,localhost,root,,test,$MASTER_MYPORT,master.sock);
insert into t2 values(2,0);
disconnect root;
connection default;
select straight_join * from t1,t2 force index (primary) where t1.a=t2.a;
drop table t1,t2;
#
# Full key.
CREATE TABLE t1 (c1 varchar(250) NOT NULL);
CREATE TABLE t2 (c1 varchar(250) NOT NULL, PRIMARY KEY (c1));
INSERT INTO t1 VALUES ('test000001'), ('test000002'), ('test000003');
INSERT INTO t2 VALUES ('test000002'), ('test000003'), ('test000004');
LOCK TABLES t1 READ LOCAL, t2 READ LOCAL;
SELECT t1.c1 AS t1c1, t2.c1 AS t2c1 FROM t1, t2
WHERE t1.c1 = t2.c1 HAVING t1c1 != t2c1;
connect (con1,localhost,root,,);
connection con1;
INSERT INTO t2 VALUES ('test000001'), ('test000005');
disconnect con1;
connection default;
SELECT t1.c1 AS t1c1, t2.c1 AS t2c1 FROM t1, t2
WHERE t1.c1 = t2.c1 HAVING t1c1 != t2c1;
DROP TABLE t1,t2;
# End of 4.0 tests
#
# Test RTREE index
#

54
storage/myisam/mi_rkey.c
View File

@ -94,28 +94,42 @@ int mi_rkey(MI_INFO *info, byte *buf, int inx, const byte *key, uint key_len,
myisam_read_vec[search_flag], info->s->state.key_root[inx]))
{
/*
If we are searching for an exact key (including the data pointer)
and this was added by an concurrent insert,
then the result is "key not found".
If we searching for a partial key (or using >, >=, < or <=) and
the data is outside of the data file, we need to continue searching
for the first key inside the data file
*/
if ((search_flag == HA_READ_KEY_EXACT) &&
(info->lastpos >= info->state->data_file_length))
if (info->lastpos >= info->state->data_file_length &&
(search_flag != HA_READ_KEY_EXACT ||
last_used_keyseg != keyinfo->seg + keyinfo->keysegs))
{
my_errno= HA_ERR_KEY_NOT_FOUND;
info->lastpos= HA_OFFSET_ERROR;
}
else while (info->lastpos >= info->state->data_file_length)
{
/*
Skip rows that are inserted by other threads since we got a lock
Note that this can only happen if we are not searching after an
exact key, because the keys are sorted according to position
*/
if (_mi_search_next(info, keyinfo, info->lastkey,
info->lastkey_length,
myisam_readnext_vec[search_flag],
info->s->state.key_root[inx]))
break;
do
{
uint not_used;
/*
Skip rows that are inserted by other threads since we got a lock
Note that this can only happen if we are not searching after an
full length exact key, because the keys are sorted
according to position
*/
if (_mi_search_next(info, keyinfo, info->lastkey,
info->lastkey_length,
myisam_readnext_vec[search_flag],
info->s->state.key_root[inx]))
break;
/*
Check that the found key does still match the search.
_mi_search_next() delivers the next key regardless of its
value.
*/
if (search_flag == HA_READ_KEY_EXACT &&
ha_key_cmp(keyinfo->seg, key_buff, info->lastkey, use_key_length,
SEARCH_FIND, &not_used))
{
my_errno= HA_ERR_KEY_NOT_FOUND;
info->lastpos= HA_OFFSET_ERROR;
break;
}
} while (info->lastpos >= info->state->data_file_length);
}
}
}