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-rw-r--r--mysql-test/t/myisam.test14
1 files changed, 14 insertions, 0 deletions
diff --git a/mysql-test/t/myisam.test b/mysql-test/t/myisam.test
index 7dcfe058039..4abd7dd2b1b 100644
--- a/mysql-test/t/myisam.test
+++ b/mysql-test/t/myisam.test
@@ -1631,4 +1631,18 @@ INSERT INTO t1 VALUES('1');
SELECT * FROM t1, t1 AS a1 WHERE t1.a=1 AND a1.a=1;
DROP TABLE t1;
+--echo #
+--echo # BUG#47444 - --myisam_repair_threads>1can result in all index
+--echo # cardinalities=1
+--echo #
+SET myisam_repair_threads=2;
+SET myisam_sort_buffer_size=4096;
+CREATE TABLE t1(a CHAR(255), KEY(a), KEY(a), KEY(a));
+INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9),(0),(1),(2),(3);
+REPAIR TABLE t1;
+SELECT CARDINALITY FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA='test' AND TABLE_NAME='t1';
+DROP TABLE t1;
+SET myisam_sort_buffer_size=@@global.myisam_sort_buffer_size;
+SET myisam_repair_threads=@@global.myisam_repair_threads;
+
--echo End of 5.1 tests