CREATE TABLE t1(c TEXT, KEY(c(3072)))ENGINE=InnoDB;
CREATE PROCEDURE dorepeat()
LOOP
INSERT INTO t1 VALUES ('abc');
UPDATE t1 SET c='cba';
END LOOP
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connect con1,localhost,root,,,;
CALL dorepeat();
connection default;
# restart: --innodb_buffer_pool_size=5242880
DROP TABLE t1;