DB_TRX_ID is not always reset when the history is removed

diff --git a/mysql-test/suite/innodb/t/dml_purge.test b/mysql-test/suite/innodb/t/dml_purge.test

index 93b7f56111c..07d071517ff 100644

--- a/mysql-test/suite/innodb/t/dml_purge.test

+++ b/mysql-test/suite/innodb/t/dml_purge.test

@@ -15,11 +15,23 @@ SET GLOBAL innodb_purge_rseg_truncate_frequency = 1;

 CREATE TABLE t1(a INT PRIMARY KEY, b INT NOT NULL)

 ROW_FORMAT=REDUNDANT ENGINE=InnoDB;

+--connect (prevent_purge,localhost,root)

+START TRANSACTION WITH CONSISTENT SNAPSHOT;

+

+--connection default

 INSERT INTO t1 VALUES(1,2),(3,4);

 UPDATE t1 SET b=-3 WHERE a=3;

+--connect (con1,localhost,root)

+BEGIN;

+UPDATE t1 SET b=4 WHERE a=3;

+--disconnect prevent_purge

+

+--connection default

 # Initiate a full purge, which should reset all DB_TRX_ID.

 --source include/wait_all_purged.inc

+--disconnect con1

+--source include/wait_all_purged.inc

 FLUSH TABLE t1 FOR EXPORT;

 # The following is based on innodb.table_flags:

@@ -19,8 +29,8 @@

  DB_ROLL_PTR=0x80000000000000,

  b=0x80000002)

 header=0x000018090074 (a=0x80000003,

- DB_TRX_ID=0x000000000000,

- DB_ROLL_PTR=0x80000000000000,

+ DB_TRX_ID=0x000000000026,

+ DB_ROLL_PTR=0x04000001370317,

  b=0x7ffffffd)

 header=0x030008030000 (a=0x73757072656d756d00)

 UNLOCK TABLES;