CURRENT_TEST: spider/bg.direct_update
mysqltest: At line 132: query 'SELECT a, b, date_format(c, '%Y-%m-%d %H:%i:%s') FROM ta_l ORDER BY a' failed: <Unknown> (2013): Lost connection to server during query

The result from queries just before the failure was:
< snip >
b CHAR(1),
c DATETIME,
PRIMARY KEY(a)
) MASTER_1_ENGINE MASTER_1_CHARSET MASTER_1_COMMENT_2_1
Warnings:
Warning	138	Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.
Warning	138	Spider table params in COMMENT or CONNECTION strings have been deprecated and will be removed in a future release. Please use table options instead.
INSERT INTO ta_l (a, b, c) VALUES
(1, 'a', '2008-08-01 10:21:39'),
(2, 'b', '2000-01-01 00:00:00'),
(3, 'e', '2007-06-04 20:03:11'),
(4, 'd', '2003-11-30 05:01:03'),
(5, 'c', '2001-12-31 23:59:59');

direct_updating test
connection master_1;
SHOW STATUS LIKE 'Spider_direct_update';
Variable_name	Value
Spider_direct_update	0
SELECT a, b, date_format(c, '%Y-%m-%d %H:%i:%s') FROM ta_l ORDER BY a;

More results from queries before failure can be found in /dev/shm/var/2/log/direct_update.log
