MDEV-6424: Mariadb server crashes with assertion failure in file ha_innodb.cc

Analysis: For some reason table stats for a table pointed from a index 
is not initialized. Added additional warning output on this situation
and table stats initialization. This is better than asserting.

1 files changed, 32 insertions, 0 deletions

diff --git a/mysql-test/suite/innodb/r/innodb-stats-initialize-failure.result b/mysql-test/suite/innodb/r/innodb-stats-initialize-failure.result
new file mode 100644
index 00000000000..ef2d3182b92
--- /dev/null
+++ b/mysql-test/suite/innodb/r/innodb-stats-initialize-failure.result
@@ -0,0 +1,32 @@
+call mtr.add_suppression("InnoDB: Warning: Index.*");
+set DEBUG_DBUG='+d,ib_ha_innodb_stat_not_initialized';
+create table t1(a int not null primary key, b int, c int, key(b), key(c)) engine=innodb;
+create procedure innodb_insert_proc (repeat_count int)
+begin
+declare current_num int;
+set current_num = 0;
+while current_num < repeat_count do
+insert into t1 values(current_num, current_num, current_num);
+set current_num = current_num + 1;
+end while;
+end//
+commit;
+set autocommit=0;
+call innodb_insert_proc(10000);
+commit;
+set autocommit=1;
+select count(1) from t1;
+count(1)
+10000
+select count(1) from t1 where a between 5 and 100;
+count(1)
+96
+select count(1) from t1 where b between 5 and 256;
+count(1)
+252
+select count(1) from t1 where c between 7 and 787;
+count(1)
+781
+set DEBUG_DBUG=NULL;
+drop procedure innodb_insert_proc;
+drop table t1;