1# 2# Bug#14007109 RECURSIVE ACQ OF BLOCK LOCK IN S MODE, STATS UPDATE ASRT !RW_LOCK_OWN(LOCK, 352) 3# 4 5-- source include/have_innodb.inc 6# The assertion only fails in debug versions, so no need to test in non-debug 7-- source include/have_debug.inc 8 9CREATE TABLE bug14007109 ( 10 a VARCHAR(512), PRIMARY KEY (a) 11) ENGINE=INNODB STATS_PERSISTENT=1; 12 13BEGIN; 14-- disable_query_log 15# As of the time this test is added, 854 pages do not trigger the assert, 16# while 855 do. We use a bigger number here just in case. What is needed 17# is to have a btree with 3 levels, where the level in the middle contains 18# two (or more) pages. The persistent stats code crawls that level twice 19# in the same mtr: 20# dict_stats_analyze_index() 21# start mtr 22# dict_stats_analyze_index_level(mtr) 23# traverse the level (leaves the last page in the middle level S-latched) 24# dict_stats_analyze_index_for_n_prefix(mtr) 25# traverse the level (would try to S-latch the last page) 26# commit mtr 27let $i=900; 28while ($i) { 29 eval INSERT INTO bug14007109 VALUES (REPEAT(1000+$i, 128)); 30 dec $i; 31} 32-- enable_query_log 33COMMIT; 34 35# We get a (debug) assertion failure here if the bug exists 36ANALYZE TABLE bug14007109; 37 38DROP TABLE bug14007109; 39