# test create secondar index online. don't block the concurrent dml

--source suite/xengine/include/have_xengine.inc
--source include/have_debug.inc

--disable_warnings
drop table if exists t1;
--enable_warnings


# we has two connection
# con1: online create sk, which was block by xengine.inplace_create_sk_scan_base_begin
# at this point, MDL lock was downgrade to MDL_SHARED_UPGRADABLE which is compatible for
# concurrent DML DML lock

# conn_defaul: 1. insert the new value when create sk online
#2. wake up the con1 to start build sk.


--echo # Establish connection con1 (user=root)
connect (con1,localhost,root,,);

--echo # Switch to connection con1
connection con1;

CREATE TABLE t1 (a INT primary key, b INT)ENGINE=xengine;

insert into t1 values(1,1);
insert into t1 values(2,2);
insert into t1 values(3,3);
insert into t1 values(4,4);
insert into t1 values(5,5);
SET DEBUG_SYNC= 'xengine.inplace_create_sk_scan_base_begin SIGNAL start_dml_insert WAIT_FOR start_dml_insert_finish';

send alter table t1 add  index t1_c22 (b) ,ALGORITHM  = INPLACE, LOCK=DEFAULT;

# concurrent dml
connection default;
# receive the altert table command


SET DEBUG_SYNC= 'now WAIT_FOR start_dml_insert';
insert into t1 values(6,6);
SET DEBUG_SYNC= 'now SIGNAL start_dml_insert_finish';

--echo # Switch to connection con1
connection con1;
reap

--echo # Switch to connection default
connection default;



show create table t1;
# use sk to select

SELECT * FROM t1 USE INDEX (t1_c22) where b = 1;
SELECT * FROM t1 USE INDEX (t1_c22) where b = 2;
SELECT * FROM t1 USE INDEX (t1_c22) where b = 3;
SELECT * FROM t1 USE INDEX (t1_c22) where b = 4;
SELECT * FROM t1 USE INDEX (t1_c22) where b = 5;
SELECT * FROM t1 USE INDEX (t1_c22) where b = 6;
drop table t1;


disconnect con1;

connection default;
--source suite/xengine/include/check_xengine_log_error.inc