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https://github.com/MariaDB/server.git
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47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
--source include/not_embedded.inc
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--source include/have_query_cache.inc
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--source include/have_debug.inc
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#
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# Bug #30887 Server crashes on SET GLOBAL query_cache_size=0
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#
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flush status;
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set query_cache_type=DEMAND;
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set global query_cache_size= 1024*1024*512;
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (a varchar(100));
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insert into t1 values ('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'),('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
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connect (bug30887con1, localhost, root, ,test);
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connect (bug30887con2, localhost, root, ,test);
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connection bug30887con1;
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--echo Activate debug hook and attempt to retrieve the statement from the cache.
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set session debug='+d,wait_in_query_cache_insert';
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--send select SQL_CACHE * from t1;
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connection default;
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let $wait_condition= select count(*)= 1 from information_schema.processlist where state= 'wait_in_query_cache_insert';
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--source include/wait_condition.inc
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connection bug30887con2;
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--echo On a second connection; clear the query cache.
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show status like 'Qcache_queries_in_cache';
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set global query_cache_size= 0;
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connection default;
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--echo Signal the debug hook to release the lock.
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select id from information_schema.processlist where state='wait_in_query_cache_insert' into @thread_id;
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kill query @thread_id;
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--echo Show query cache status.
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show status like 'Qcache_queries_in_cache';
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disconnect bug30887con1;
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disconnect bug30887con2;
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set global query_cache_size= 0;
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use test;
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drop table t1;
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