Added new status variables to make it easier to debug certain problems:

- Handler_read_retry
- Update_scan
- Delete_scan

mysql-test/r/create.result

@@ -1721,6 +1721,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	7

mysql-test/r/derived_view.result

@@ -79,6 +79,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -93,6 +94,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	12
@@ -166,6 +168,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -180,6 +183,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	12
@@ -232,6 +236,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -248,6 +253,7 @@ Handler_read_key	11
 Handler_read_last	0
 Handler_read_next	3
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	11
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	36
@@ -323,6 +329,7 @@ Handler_read_key	22
 Handler_read_last	0
 Handler_read_next	22
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	60
@@ -340,6 +347,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -356,6 +364,7 @@ Handler_read_key	11
 Handler_read_last	0
 Handler_read_next	3
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	11
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	36
@@ -451,6 +460,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	39

mysql-test/r/group_min_max.result

@@ -2378,6 +2378,7 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	0
+Handler_read_retry	0
 EXPLAIN SELECT max(b), a FROM t1 GROUP BY a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	range	NULL	a	5	NULL	8	Using index for group-by
@@ -2387,6 +2388,7 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	0
+Handler_read_retry	0
 FLUSH STATUS;
 SELECT * FROM (SELECT max(b), a FROM t1 GROUP BY a) b;
 max(b)	a
@@ -2398,6 +2400,7 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	0
+Handler_read_retry	0
 FLUSH STATUS;
 (SELECT max(b), a FROM t1 GROUP BY a) UNION 
 (SELECT max(b), a FROM t1 GROUP BY a);
@@ -2410,6 +2413,7 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	16
 Handler_read_next	0
+Handler_read_retry	0
 EXPLAIN (SELECT max(b), a FROM t1 GROUP BY a) UNION 
 (SELECT max(b), a FROM t1 GROUP BY a);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -2462,6 +2466,7 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	0
+Handler_read_retry	0
 DELETE FROM t3;
 FLUSH STATUS;
 INSERT INTO t3 SELECT 1, (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) 
@@ -2470,12 +2475,14 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	0
+Handler_read_retry	0
 FLUSH STATUS;
 DELETE FROM t3 WHERE (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) > 10000;
 SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	0
+Handler_read_retry	0
 FLUSH STATUS;
 DELETE FROM t3 WHERE (SELECT (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) x 
 FROM t1) > 10000;
@@ -2484,6 +2491,7 @@ SHOW STATUS LIKE 'handler_read__e%';
 Variable_name	Value
 Handler_read_key	8
 Handler_read_next	1
+Handler_read_retry	0
 DROP TABLE t1,t2,t3;
 CREATE TABLE t1 (a int, INDEX idx(a));
 INSERT INTO t1 VALUES

mysql-test/r/handler_read_last.result

@@ -12,6 +12,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -26,6 +27,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -42,6 +44,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -58,6 +61,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	2
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/innodb_ext_key.result

@@ -20,6 +20,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	5
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -39,6 +40,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	1
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -60,6 +62,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -81,6 +84,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -102,6 +106,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	6
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -123,6 +128,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	1
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -146,6 +152,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	6
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -169,6 +176,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	3
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -188,6 +196,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	6
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -207,6 +216,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -228,6 +238,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	6
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -249,6 +260,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -270,6 +282,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	5
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -291,6 +304,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -317,6 +331,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	9
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	9
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -343,6 +358,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	2
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -370,6 +386,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	9
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	9
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -397,6 +414,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	3
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	3
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -422,6 +440,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	9
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	3
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -447,6 +466,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	3
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	3
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -477,6 +497,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	294
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -507,6 +528,7 @@ Handler_read_key	21
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -529,6 +551,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	1230
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -551,6 +574,7 @@ Handler_read_key	6
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -581,6 +605,7 @@ Handler_read_key	3
 Handler_read_last	0
 Handler_read_next	26
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -610,6 +635,7 @@ Handler_read_key	3
 Handler_read_last	0
 Handler_read_next	3
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -807,6 +833,7 @@ Handler_read_key	10
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	11
@@ -828,6 +855,7 @@ Handler_read_key	10
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	11

mysql-test/r/insert_select.result

@@ -701,6 +701,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	1

mysql-test/r/join.result

@@ -860,6 +860,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	5
@@ -1271,6 +1272,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	1

mysql-test/r/join_outer.result

@@ -1244,6 +1244,7 @@ Handler_read_key	5
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	6
@@ -1805,6 +1806,7 @@ Handler_read_key	4
 Handler_read_last	0
 Handler_read_next	5
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	1048581
@@ -1819,6 +1821,7 @@ Handler_read_key	4
 Handler_read_last	0
 Handler_read_next	5
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	1048581

mysql-test/r/join_outer_jcl6.result

@@ -1255,6 +1255,7 @@ Handler_read_key	5
 Handler_read_last	0
 Handler_read_next	9
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	3
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	6
@@ -1816,6 +1817,7 @@ Handler_read_key	4
 Handler_read_last	0
 Handler_read_next	5
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	1048581
@@ -1830,6 +1832,7 @@ Handler_read_key	4
 Handler_read_last	0
 Handler_read_next	5
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	1048581

mysql-test/r/limit_rows_examined.result

@@ -751,6 +751,7 @@ Handler_read_key	5
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	46
@@ -775,6 +776,7 @@ Handler_read_key	5
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	2
 Handler_read_rnd_deleted	1
 Handler_read_rnd_next	47

mysql-test/r/null_key.result

@@ -429,6 +429,7 @@ Handler_read_key	6
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	5

mysql-test/r/order_by.result

@@ -2862,6 +2862,7 @@ Handler_read_key	250
 Handler_read_last	0
 Handler_read_next	249
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	249
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	250
@@ -2880,6 +2881,7 @@ Handler_read_key	250
 Handler_read_last	0
 Handler_read_next	249
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	250

mysql-test/r/partition.result

@@ -562,6 +562,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -582,6 +583,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -614,6 +616,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -632,6 +635,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -650,6 +654,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -668,6 +673,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/ps.result

@@ -3949,6 +3949,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -3963,6 +3964,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -3977,6 +3979,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	8
@@ -3991,6 +3994,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/range_vs_index_merge.result

@@ -1310,6 +1310,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	385
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	377
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1338,6 +1339,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	59
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1367,6 +1369,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	59
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/range_vs_index_merge_innodb.result

@@ -1311,6 +1311,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	385
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	377
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1339,6 +1340,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	59
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1368,6 +1370,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	59
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/select.result

@@ -4351,6 +4351,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	6

mysql-test/r/select_jcl6.result

@@ -4362,6 +4362,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	10
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	10
 Handler_read_rnd_deleted	1
 Handler_read_rnd_next	6

mysql-test/r/select_pkeycache.result

@@ -4351,6 +4351,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	6

mysql-test/r/single_delete_update.result

@@ -29,6 +29,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -48,6 +49,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -84,6 +86,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -103,6 +106,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -136,6 +140,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -155,6 +160,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -192,6 +198,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -211,6 +218,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -242,6 +250,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -261,6 +270,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -290,6 +300,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -309,6 +320,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -341,6 +353,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	7
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -365,6 +378,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	7
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -403,6 +417,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -422,6 +437,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -458,6 +474,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -477,6 +494,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -522,6 +540,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -547,6 +566,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -566,6 +586,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -603,6 +624,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -622,6 +644,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -663,6 +686,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -682,6 +706,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -720,6 +745,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -739,6 +765,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -776,6 +803,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -795,6 +823,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -826,6 +855,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -845,6 +875,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -875,6 +906,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -894,6 +926,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -927,6 +960,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	7
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -951,6 +985,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	7
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -993,6 +1028,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1012,6 +1048,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1053,6 +1090,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -1072,6 +1110,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -1111,6 +1150,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	4
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1136,6 +1176,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -1155,6 +1196,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	4
+Handler_read_retry	0
 Handler_read_rnd	5
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/sp.result

@@ -7713,6 +7713,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -7724,6 +7725,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	4097
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/status.result

@@ -287,6 +287,7 @@ Handler_read_key	4
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	7
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	23
@@ -304,7 +305,7 @@ Created_tmp_files	0
 Created_tmp_tables	2
 Handler_tmp_update	2
 Handler_tmp_write	7
-Rows_tmp_read	42
+Rows_tmp_read	43
 drop table t1;
 CREATE TABLE t1 (i int(11) DEFAULT NULL, KEY i (i) ) ENGINE=MyISAM;
 insert into t1 values (1),(2),(3),(4),(5);
@@ -329,6 +330,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	2
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	1
 Handler_read_rnd_next	2

mysql-test/r/status_user.result

@@ -112,6 +112,7 @@ Handler_read_key	9
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	5

mysql-test/r/subselect.result

@@ -6868,6 +6868,7 @@ Handler_read_key	8
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	22
@@ -6905,6 +6906,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16

mysql-test/r/subselect3.result

@@ -124,6 +124,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	41

mysql-test/r/subselect3_jcl6.result

@@ -134,6 +134,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	41

mysql-test/r/subselect_cache.result

@@ -36,6 +36,7 @@ Handler_read_key	7
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	31
@@ -64,6 +65,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	61
@@ -91,6 +93,7 @@ Handler_read_key	7
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	31
@@ -117,6 +120,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	61
@@ -144,6 +148,7 @@ Handler_read_key	7
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	31
@@ -170,6 +175,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	61
@@ -269,6 +275,7 @@ Handler_read_key	7
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	442
@@ -367,6 +374,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	472
@@ -390,6 +398,7 @@ Handler_read_key	17
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	36
@@ -412,6 +421,7 @@ Handler_read_key	10
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	86
@@ -435,6 +445,7 @@ Handler_read_key	17
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	41
@@ -457,6 +468,7 @@ Handler_read_key	10
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	91
@@ -486,6 +498,7 @@ Handler_read_key	7
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	31
@@ -514,6 +527,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	61
@@ -537,6 +551,7 @@ Handler_read_key	7
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	1
 Handler_read_rnd_next	36
@@ -559,6 +574,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	4
 Handler_read_rnd_deleted	1
 Handler_read_rnd_next	66
@@ -658,6 +674,7 @@ Handler_read_key	70
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	141
@@ -756,6 +773,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	671
@@ -1381,6 +1399,7 @@ Handler_read_key	11
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	145
@@ -1411,6 +1430,7 @@ Handler_read_key	32
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	84
@@ -1444,6 +1464,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	127
@@ -1474,6 +1495,7 @@ Handler_read_key	13
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	69
@@ -1665,6 +1687,7 @@ Handler_read_key	15
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	57
@@ -1691,6 +1714,7 @@ Handler_read_key	21
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	37
@@ -1718,6 +1742,7 @@ Handler_read_key	15
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	57
@@ -1744,6 +1769,7 @@ Handler_read_key	22
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	8
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	41
@@ -1786,6 +1812,7 @@ Handler_read_key	15
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16
@@ -1824,6 +1851,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	151
@@ -1861,6 +1889,7 @@ Handler_read_key	15
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	43
@@ -1898,6 +1927,7 @@ Handler_read_key	18
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	27

mysql-test/r/subselect_mat.result

@@ -2209,6 +2209,7 @@ Handler_read_key	5000
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	6003

mysql-test/r/subselect_no_exists_to_in.result

@@ -6868,6 +6868,7 @@ Handler_read_key	8
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	22
@@ -6905,6 +6906,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16

mysql-test/r/subselect_no_mat.result

@@ -6862,6 +6862,7 @@ Handler_read_key	8
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	22
@@ -6899,6 +6900,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16

mysql-test/r/subselect_no_opts.result

@@ -6859,6 +6859,7 @@ Handler_read_key	8
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	22
@@ -6896,6 +6897,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16

mysql-test/r/subselect_no_scache.result

@@ -6874,6 +6874,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	58
@@ -6911,6 +6912,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16

mysql-test/r/subselect_no_semijoin.result

@@ -6859,6 +6859,7 @@ Handler_read_key	8
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	22
@@ -6896,6 +6897,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	16

mysql-test/r/subselect_sj_mat.result

@@ -2249,6 +2249,7 @@ Handler_read_key	5000
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	6003

mysql-test/r/update.result

@@ -276,6 +276,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -289,6 +290,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	2
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	9
@@ -301,6 +303,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -313,6 +316,7 @@ Handler_read_key	0
 Handler_read_last	1
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -326,6 +330,7 @@ Handler_read_key	0
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	2
 Handler_read_rnd_next	7
@@ -381,6 +386,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	1
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	1
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -420,6 +426,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -432,6 +439,7 @@ Handler_read_key	2
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -443,6 +451,7 @@ Handler_read_key	3
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -454,6 +463,7 @@ Handler_read_key	3
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -699,6 +709,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	1
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	2
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

mysql-test/r/view.result

@@ -4255,6 +4255,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17
@@ -4278,6 +4279,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	17

sql/handler.cc

@@ -2757,6 +2757,15 @@ int handler::ha_index_next_same(uchar *buf, const uchar *key, uint keylen)
   return result;
 }
 
+
+bool handler::ha_was_semi_consistent_read()
+{
+  bool result= was_semi_consistent_read();
+  if (result)
+    increment_statistics(&SSV::ha_read_retry_count);
+  return result;
+}
+
 /* Initialize handler for random reading, with error handling */
 
 int handler::ha_rnd_init_with_error(bool scan)

sql/handler.h

@@ -3090,6 +3090,7 @@ public:
     If this method returns nonzero, it will also signal the storage
     engine that the next read will be a locking re-read of the row.
   */
+  bool ha_was_semi_consistent_read();
   virtual bool was_semi_consistent_read() { return 0; }
   /**
     Tell the engine whether it should avoid unnecessary lock waits.

sql/multi_range_read.cc

@@ -267,7 +267,7 @@ int handler::multi_range_read_next(range_id_t *range_info)
     }
     else
     {
-      if (was_semi_consistent_read())
+      if (ha_was_semi_consistent_read())
       {
         /*
           The following assignment is redundant, but for extra safety and to

sql/mysqld.cc

@@ -7887,6 +7887,7 @@ SHOW_VAR status_vars[]= {
   {"Delayed_errors",           (char*) &delayed_insert_errors,  SHOW_LONG},
   {"Delayed_insert_threads",   (char*) &delayed_insert_threads, SHOW_LONG_NOFLUSH},
   {"Delayed_writes",           (char*) &delayed_insert_writes,  SHOW_LONG},
+  {"Delete_scan",	       (char*) offsetof(STATUS_VAR, delete_scan_count), SHOW_LONG_STATUS},
   {"Empty_queries",            (char*) offsetof(STATUS_VAR, empty_queries), SHOW_LONG_STATUS},
   {"Executed_events",          (char*) &executed_events, SHOW_LONG_NOFLUSH },
   {"Executed_triggers",        (char*) offsetof(STATUS_VAR, executed_triggers), SHOW_LONG_STATUS},
@@ -7915,6 +7916,7 @@ SHOW_VAR status_vars[]= {
   {"Handler_read_last",        (char*) offsetof(STATUS_VAR, ha_read_last_count), SHOW_LONG_STATUS},
   {"Handler_read_next",        (char*) offsetof(STATUS_VAR, ha_read_next_count), SHOW_LONG_STATUS},
   {"Handler_read_prev",        (char*) offsetof(STATUS_VAR, ha_read_prev_count), SHOW_LONG_STATUS},
+  {"Handler_read_retry",       (char*) offsetof(STATUS_VAR, ha_read_retry_count), SHOW_LONG_STATUS},
   {"Handler_read_rnd",         (char*) offsetof(STATUS_VAR, ha_read_rnd_count), SHOW_LONG_STATUS},
   {"Handler_read_rnd_deleted", (char*) offsetof(STATUS_VAR, ha_read_rnd_deleted_count), SHOW_LONG_STATUS},
   {"Handler_read_rnd_next",    (char*) offsetof(STATUS_VAR, ha_read_rnd_next_count), SHOW_LONG_STATUS},
@@ -8031,6 +8033,7 @@ SHOW_VAR status_vars[]= {
   {"Threads_connected",        (char*) &connection_count,       SHOW_INT},
   {"Threads_created",	       (char*) &thread_created,		SHOW_LONG_NOFLUSH},
   {"Threads_running",          (char*) &thread_running,         SHOW_INT},
+  {"Update_scan",	       (char*) offsetof(STATUS_VAR, update_scan_count), SHOW_LONG_STATUS},
   {"Uptime",                   (char*) &show_starttime,         SHOW_SIMPLE_FUNC},
 #ifdef ENABLED_PROFILING
   {"Uptime_since_flush_status",(char*) &show_flushstatustime,   SHOW_SIMPLE_FUNC},

sql/sql_class.h

@@ -666,9 +666,11 @@ typedef struct system_status_var
   ulong ha_read_key_count;
   ulong ha_read_next_count;
   ulong ha_read_prev_count;
+  ulong ha_read_retry_count;
   ulong ha_read_rnd_count;
   ulong ha_read_rnd_next_count;
   ulong ha_read_rnd_deleted_count;
+
   /*
     This number doesn't include calls to the default implementation and
     calls made by range access. The intent is to count only calls made by
@@ -702,6 +704,8 @@ typedef struct system_status_var
   ulong select_range_count_;
   ulong select_range_check_count_;
   ulong select_scan_count_;
+  ulong update_scan_count;
+  ulong delete_scan_count;
   ulong executed_triggers;
   ulong long_query_count;
   ulong filesort_merge_passes_;

sql/sql_delete.cc

@@ -466,6 +466,9 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
   DBUG_EXECUTE_IF("show_explain_probe_delete_exec_start", 
                   dbug_serve_apcs(thd, 1););
 
+  if (!(select && select->quick))
+    status_var_increment(thd->status_var.delete_scan_count);
+
   if (query_plan.using_filesort)
   {
     ha_rows examined_rows;

sql/sql_update.cc

@@ -528,6 +528,9 @@ int mysql_update(THD *thd,
   DBUG_EXECUTE_IF("show_explain_probe_update_exec_start", 
                   dbug_serve_apcs(thd, 1););
   
+  if (!(select && select->quick))
+    status_var_increment(thd->status_var.update_scan_count);
+
   if (query_plan.using_filesort || query_plan.using_io_buffer)
   {
     /*
@@ -594,6 +597,7 @@ int mysql_update(THD *thd,
         close_cached_file(&tempfile);
         goto err;
       }
+
       table->file->try_semi_consistent_read(1);
 
       /*
@@ -631,7 +635,7 @@ int mysql_update(THD *thd,
         thd->inc_examined_row_count(1);
 	if (!select || (error= select->skip_record(thd)) > 0)
 	{
-          if (table->file->was_semi_consistent_read())
+          if (table->file->ha_was_semi_consistent_read())
 	    continue;  /* repeat the read of the same row if it still exists */
 
 	  table->file->position(table->record[0]);
@@ -746,7 +750,7 @@ int mysql_update(THD *thd,
     thd->inc_examined_row_count(1);
     if (!select || select->skip_record(thd) > 0)
     {
-      if (table->file->was_semi_consistent_read())
+      if (table->file->ha_was_semi_consistent_read())
         continue;  /* repeat the read of the same row if it still exists */
 
       store_record(table,record[1]);

storage/tokudb/mysql-test/tokudb/r/ext_key_1_innodb.result

@@ -18,6 +18,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -35,6 +36,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -51,6 +53,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -67,6 +70,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -84,6 +88,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -100,6 +105,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

storage/tokudb/mysql-test/tokudb/r/ext_key_1_tokudb.result

@@ -18,6 +18,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -35,6 +36,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -51,6 +53,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -67,6 +70,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -84,6 +88,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -100,6 +105,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

storage/tokudb/mysql-test/tokudb/r/ext_key_2_innodb.result

@@ -18,6 +18,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -35,6 +36,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0

storage/tokudb/mysql-test/tokudb/r/ext_key_2_tokudb.result

@@ -18,6 +18,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
@@ -35,6 +36,7 @@ Handler_read_key	1
 Handler_read_last	0
 Handler_read_next	0
 Handler_read_prev	0
+Handler_read_retry	0
 Handler_read_rnd	0
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0