select server_id, role from information_schema.alisql_cluster_local where role='leader';
server_id	role
1	Leader
select server_id, voted_for, role from information_schema.alisql_cluster_local;
server_id	voted_for	role
2	1	Follower
create table t1(id int);
insert into t1 values (1);
insert into t1 values (2);
insert into t1 values (3);
insert into t1 values (4);
insert into t1 values (5);
# restart: --cluster-start-index=LOGINDEX
insert into t1 values (6);
select count(distinct(match_index)) from information_schema.alisql_cluster_global where server_id <= 3;
count(distinct(match_index))
2
call dbms_consensus.change_leader("127.0.0.1:PAXOS_PORT_1");
select count(distinct(match_index)) from information_schema.alisql_cluster_global where server_id <= 3;
count(distinct(match_index))
1
drop table t1;