CREATE TABLE t1_will_crash (a INT, KEY (a)) ENGINE=MyISAM;
INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
FLUSH TABLES;
# replacing t1.MYI with a corrupt + unclosed one created by doing:
# 'create table t1 (a int key(a))' head -c1024 t1.MYI > corrupt_t1.MYI 
SELECT * FROM t1_will_crash;
a
1
2
3
4
5
6
7
8
9
10
11
Warnings:
Error	145	Table 't1_will_crash' is marked as crashed and should be repaired
Warning	1034	1 client is using or hasn't closed the table properly
Error	1034	Size of indexfile is: 1024        Should be: 2048
Warning	1034	Size of datafile is: 77       Should be: 7
Warning	1034	Number of rows changed from 1 to 11
DROP TABLE t1_will_crash;
CREATE TABLE t1_will_crash (a INT, KEY (a))
ENGINE=MyISAM
PARTITION BY HASH(a)
PARTITIONS 3;
INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
FLUSH TABLES;
# replacing t1#P#p1.MYI with a corrupt + unclosed one created by doing:
# 'create table t1 (a int key(a)) partition by hash (a) partitions 3'
# head -c1024 t1#P#p1.MYI > corrupt_t1#P#p1.MYI 
SELECT * FROM t1_will_crash;
a
1
2
3
4
5
6
7
8
9
10
11
Warnings:
Error	145	Table 't1_will_crash#P#p1' is marked as crashed and should be repaired
Warning	1034	1 client is using or hasn't closed the table properly
Error	1034	Size of indexfile is: 1024        Should be: 2048
Warning	1034	Size of datafile is: 28       Should be: 7
Warning	1034	Number of rows changed from 1 to 4
DROP TABLE t1_will_crash;