set global consensus_flow_control="127.0.0.1:24001 -1;127.0.0.1:24002 -2";
# test abnormal case, do not crash
set global consensus_flow_control="A 1;B 1";
set global consensus_flow_control="127.0.0.1:223 -1;127.0.0.1:223 -2";
set global consensus_flow_control="aaaaa";
set global consensus_flow_control=";;;;";
set global consensus_flow_control="";