set session storage_engine=aria; Warnings: Warning 1287 '@@storage_engine' is deprecated and will be removed in a future release. Please use '@@default_storage_engine' instead # # BUG#47444 - --myisam_repair_threads > 1 can result in all index # cardinalities=1 # SET aria_repair_threads=2; SET aria_sort_buffer_size=16384; CREATE TABLE t1(a CHAR(255), KEY(a), KEY(a), KEY(a)); Warnings: Note 1831 Duplicate index `a_2`. This is deprecated and will be disallowed in a future release Note 1831 Duplicate index `a_3`. This is deprecated and will be disallowed in a future release INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(0),(1),(2),(3); REPAIR TABLE t1; Table Op Msg_type Msg_text test.t1 repair status OK SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='t1'; CARDINALITY 14 14 14 CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check status OK DROP TABLE t1; SET aria_sort_buffer_size=@@global.aria_sort_buffer_size; SET aria_repair_threads=@@global.aria_repair_threads; # # BUG#47073 - valgrind errs, corruption,failed repair of partition, # low myisam_sort_buffer_size # CREATE TABLE t1(a INT, b CHAR(10), KEY(a), KEY(b)); INSERT INTO t1 select seq,'0' from seq_1_to_65536; SET aria_sort_buffer_size=16384; REPAIR TABLE t1; Table Op Msg_type Msg_text test.t1 repair status OK CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check status OK SET aria_repair_threads=2; REPAIR TABLE t1; Table Op Msg_type Msg_text test.t1 repair status OK CHECK TABLE t1; Table Op Msg_type Msg_text test.t1 check status OK SET aria_repair_threads=@@global.aria_repair_threads; SET aria_sort_buffer_size=@@global.aria_sort_buffer_size; DROP TABLE t1;