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FLUSH TABLES;
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2);
connect wait,localhost,root,,test;
SET DEBUG_SYNC='before_trx_state_committed_in_memory SIGNAL c WAIT_FOR ever';
TRUNCATE TABLE t1;
connection default;
SET DEBUG_SYNC='now WAIT_FOR c';
# restart
disconnect wait;
SET @save_frequency=@@GLOBAL.innodb_purge_rseg_truncate_frequency;
SET GLOBAL innodb_purge_rseg_truncate_frequency=1;
InnoDB 0 transactions not purged
SET GLOBAL innodb_purge_rseg_truncate_frequency=@save_frequency;
SELECT COUNT(*) FROM t1;
COUNT(*)
0
TRUNCATE TABLE t1;
DROP TABLE t1;
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