MINI MINI MANI MO

# Bug#34750489 : applying a updated online log may access out-of-bounds memory

--source include/have_debug.inc
--source include/have_debug_sync.inc
--source include/count_sessions.inc

show global variables like "innodb_sort_buffer_size";

connect(conn1,localhost,root,,);
connect(conn2,localhost,root,,);

connection default;
--disable_query_log
CREATE TABLE t1(
  id INT,
  name VARCHAR(1000),
  g_col VARCHAR(20) GENERATED ALWAYS AS (concat(id, substr(`name`, 0, 10))) VIRTUAL,
  KEY idx_id_g_col(id, g_col));

let $i= 0;
while ($i < 80)
{
  eval INSERT INTO `t1`(id, name) VALUES($i, repeat("a",1000));
  inc $i;
}
--enable_query_log

# main operation
connection conn1;
SET debug_sync = 'alter_table_update_log signal send_concurrent WAIT_FOR concurrent_done';
--send OPTIMIZE TABLE t1;

# concurrent operations
connection conn2;
SET debug_sync = 'now wait_for send_concurrent';
UPDATE t1 SET id = id + 1;
SET debug_sync = 'now signal concurrent_done';
disconnect conn2;

connection conn1;
reap;
disconnect conn1;

# teardown
connection default;

DROP TABLE t1;
--source include/wait_until_count_sessions.inc