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Merge adventure.(none):/home/thek/Development/cpp/bug30887/my51-bug30887

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into  adventure.(none):/home/thek/Development/cpp/mysql-5.1-runtime


sql/sql_cache.cc:
  Auto merged
This commit is contained in:
unknown
2008-01-03 15:37:54 +01:00
parent e5f1ceb467 a3561354a2
commit 8a824b6733
3 changed files with 122 additions and 2 deletions
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24
mysql-test/r/query_cache.result
View File

@ -1669,4 +1669,28 @@ SELECT 1 FROM t1 GROUP BY
1
1
DROP TABLE t1;
flush status;
set query_cache_type=DEMAND;
set global query_cache_size= 1024*1024*512;
drop table if exists t1;
create table t1 (a varchar(100));
insert into t1 values ('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'),('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
Activate debug hook and attempt to retrieve the statement from the cache.
set session debug='+d,wait_in_query_cache_insert';
select SQL_CACHE * from t1;;
On a second connection; clear the query cache.
show status like 'Qcache_queries_in_cache';
Variable_name Value
Qcache_queries_in_cache 1
set global query_cache_size= 0;;
Signal the debug hook to release the lock.
select id from information_schema.processlist where state='wait_in_query_cache_insert' into @thread_id;
kill query @thread_id;
Show query cache status.
show status like 'Qcache_queries_in_cache';
Variable_name Value
Qcache_queries_in_cache 1
set global query_cache_size= 0;
use test;
drop table t1;
End of 5.1 tests

41
mysql-test/t/query_cache.test
View File

@ -1316,6 +1316,47 @@ SELECT 1 FROM t1 GROUP BY
(SELECT LAST_INSERT_ID() FROM t1 ORDER BY MIN(a) ASC LIMIT 1);
DROP TABLE t1;
#
# Bug #30887 Server crashes on SET GLOBAL query_cache_size=0
#
flush status;
set query_cache_type=DEMAND;
set global query_cache_size= 1024*1024*512;
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (a varchar(100));
insert into t1 values ('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'),('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
connect (bug30887con1, localhost, root, ,test);
connect (bug30887con2, localhost, root, ,test);
connection bug30887con1;
--echo Activate debug hook and attempt to retrieve the statement from the cache.
set session debug='+d,wait_in_query_cache_insert';
--send select SQL_CACHE * from t1;
connection default;
let $wait_condition= select count(*)= 1 from information_schema.processlist where state= 'wait_in_query_cache_insert';
--source include/wait_condition.inc
connection bug30887con2;
--echo On a second connection; clear the query cache.
show status like 'Qcache_queries_in_cache';
--send set global query_cache_size= 0;
connection default;
--echo Signal the debug hook to release the lock.
select id from information_schema.processlist where state='wait_in_query_cache_insert' into @thread_id;
kill query @thread_id;
--echo Show query cache status.
show status like 'Qcache_queries_in_cache';
disconnect bug30887con1;
disconnect bug30887con2;
set global query_cache_size= 0;
use test;
drop table t1;
--echo End of 5.1 tests