Cherry-pick Bug#33362 from mysql-5.1 (8ce74569) · Commits · Software / OSDI20 Artifacts / mariadb

mysql-test/r/query_cache_merge.result

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Original line number	Diff line number	Diff line
		@@ -38,3 +38,59 @@ drop table t1,t2,t3,t4,t5,t6,t7,t8,t9,t10,t11,t12,t13,t14,t15,t16,t17,t18,t19,t2
		SET @@global.query_cache_size=0;

		# End of 4.1 tests

		#
		# Bug#33362: Query cache invalidation (truncate) may hang if cached query uses many tables
		#

		let $c= 255;

		while ($c)
		{
		eval CREATE TABLE t$c (a INT);
		eval INSERT INTO t$c VALUES ($c);
		dec $c;
		}

		let $c= 254;
		let $str= t255;

		while ($c)
		{
		let $str= t$c,$str;
		dec $c;
		}

		eval CREATE TABLE t0 (a INT) ENGINE=MERGE UNION($str);
		SET GLOBAL query_cache_size = 1048576;
		FLUSH STATUS;
		SELECT a FROM t0 WHERE a = 1;
		SHOW STATUS LIKE "Qcache_queries_in_cache";

		let $c= 255;
		let $i= 1;

		FLUSH TABLES;

		while ($c)
		{
		eval TRUNCATE TABLE t$c;
		eval SELECT a FROM t$i;
		dec $c;
		inc $i;
		}

		SELECT a FROM t0;
		DROP TABLE t0;

		let $c= 255;

		while ($c)
		{
		eval DROP TABLE t$c;
		dec $c;
		}

		SET @@global.query_cache_size = 0;

		--echo End of 5.1 tests

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Original line number	Diff line number	Diff line
		@@ -2516,7 +2516,7 @@ my_bool Query_cache::register_all_tables(Query_cache_block *block,
		tmp++)
		unlink_table(tmp);
		}
		return (n);
		return test(n);
		}

		/*