# use debug_sync
--source include/have_debug.inc

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

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection con1;

# prepare the data

create database tb;
create table t(id int primary key, c1 int, c2 int);
insert into t values(1,1,1),(2,1,2);

create table t1(id int primary key, c1 int, c2 int);

SET DEBUG_SYNC= 'RESET';

SET DEBUG_SYNC='before_commit_inplace_alter_table SIGNAL rollback WAIT_FOR commit';

--echo #sending
--send alter table t1 add index(c1);

connection con2;

SET DEBUG_SYNC='before_rollback_inplace_alter_table WAIT_FOR rollback'; 

SET DEBUG_SYNC='after_rollback_inplace_alter_table SIGNAL commit';

--error 1062
alter table t add unique index(c1);

--echo # restart the server.
--exec echo "restart:" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
--enable_reconnect
--source include/wait_until_connected_again.inc

#cleanup
drop table t;
drop table t1;
drop database tb;
--source suite/xengine/include/check_xengine_log_error.inc