mysql-server/mysql-test/t/analyze_debug.test
2025-03-05 14:31:37 +07:00

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# We need the Debug Sync Facility.
--source include/have_debug_sync.inc
--echo #
--echo # BUG#32224917: ANALYZE TABLE TAKES TABLE LOCK DURING INDEX STATS UPDATE,
--echo # CAUSES QUERY PILEUP
--echo #
CREATE TABLE t1 (c1 INT PRIMARY KEY) ENGINE=INNODB;
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 (c2 INT PRIMARY KEY) ENGINE=INNODB
PARTITION BY HASH (c2)
PARTITIONS 4;
INSERT INTO t2 VALUES (2);
--enable_connect_log
--connect (con1,localhost,root)
SET DEBUG_SYNC="before_reset_query_plan SIGNAL first_select_ongoing WAIT_FOR second_select_finished";
--send SELECT c1 FROM t1
--connection default
SET DEBUG_SYNC="now WAIT_FOR first_select_ongoing";
ANALYZE TABLE t1;
# Without the patch, this SELECT would wait indefinitely.
SELECT c1 FROM t1;
SET DEBUG_SYNC="now SIGNAL second_select_finished";
--connection con1
reap;
SET DEBUG_SYNC="before_reset_query_plan SIGNAL first_select_ongoing WAIT_FOR second_select_finished";
--send SELECT c2 FROM t2
--connection default
SET DEBUG_SYNC="now WAIT_FOR first_select_ongoing";
ANALYZE TABLE t2;
# Without the patch, this SELECT would wait indefinitely.
SELECT c2 FROM t2;
SET DEBUG_SYNC="now SIGNAL second_select_finished";
--connection con1
reap;
--disconnect con1
--source include/wait_until_disconnected.inc
--connection default
--disable_connect_log
DROP TABLE t1, t2;