# Test for bug #14676111: WRONG PAGE_LEVEL WRITTEN FOR UPPER THAN FATHER PAGE AT BTR_LIFT_PAGE_UP()

-- source include/have_innodb.inc
-- source include/have_debug.inc
-- source include/count_sessions.inc

set @old_innodb_limit_optimistic_insert_debug = @@innodb_limit_optimistic_insert_debug;

CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB STATS_PERSISTENT=0;

#
# make 4 leveled straight tree
#
set global innodb_limit_optimistic_insert_debug = 2;
insert into t1 values (1);
--connect (con5,localhost,root)
begin;
insert into t1 values (5);
#current tree form
# (1, 5)

--connect (con4,localhost,root)
begin;
insert into t1 values (4);
#records in a page is limited to 2 artificially. root rise occurs
#current tree form
#   (1, 5)
#(1, 4) (5)

--connection default
insert into t1 values (3);
#current tree form
#    (1, 5)
#  (1, 4) (5)
#(1, 3) (4) (5)

--connect (con2,localhost,root)
begin;
insert into t1 values (2);
#current tree form
#      (1, 5)
#    (1, 4) (5)
#  (1, 3) (4) (5)
#(1, 2) (3) (4) (5)

--connection default
analyze table t1;
select CLUST_INDEX_SIZE from information_schema.INNODB_SYS_TABLESTATS where NAME = 'test/t1';

--connection con4
rollback;
--disconnect con4
--connection default

#deleting 1 record of 2 records don't cause merge artificially.
#current tree form
#      (1, 5)
#    (1)    (5)
#  (1, 3)     (5)
#(1, 2) (3)     (5)

analyze table t1;
select CLUST_INDEX_SIZE from information_schema.INNODB_SYS_TABLESTATS where NAME = 'test/t1';

--connection con5
rollback;
--disconnect con5
--connection default

#deleting 1 record of 2 records don't cause merge artificially.
#current tree form
#      (1)
#    (1)
#  (1, 3) <- lift up this level next, when deleting node ptr
#(1, 2) (3) <- merged next

analyze table t1;
select CLUST_INDEX_SIZE from information_schema.INNODB_SYS_TABLESTATS where NAME = 'test/t1';

#
# cause merge at level 0
#

#disable the artificial limitation of records in a page
set global innodb_limit_optimistic_insert_debug = 10000;
--connection con2
rollback;
--disconnect con2
--connection default

#merge page occurs. and lift up occurs.
#current tree form
#      (1)
#    (1)
#  (1, 3)

analyze table t1;
select CLUST_INDEX_SIZE from information_schema.INNODB_SYS_TABLESTATS where NAME = 'test/t1';

begin;
insert into t1 values (2);
#current tree form
#      (1)
#    (1) <- lift up this level next, because it is not root
#  (1, 2, 3)
rollback;

#current tree form
#      (1)
#    (1, 3)

analyze table t1;
select CLUST_INDEX_SIZE from information_schema.INNODB_SYS_TABLESTATS where NAME = 'test/t1';

begin;
insert into t1 values (2);
#current tree form
#      (1)
#    (1, 2, 3) <- lift up this level next, because the father is root
rollback;
#current tree form
#      (1, 3)

analyze table t1;
select CLUST_INDEX_SIZE from information_schema.INNODB_SYS_TABLESTATS where NAME = 'test/t1';

drop table t1;

set global innodb_limit_optimistic_insert_debug = @old_innodb_limit_optimistic_insert_debug;
-- source include/wait_until_count_sessions.inc