fix issue #274: monitor的cluster一定是failsafe的，而且无法修改#3523

Merged

chickenlj merged 2 commits intoapache:masterfrom beiwei30:issue274

Feb 26, 2019

Commits on Feb 21, 2019

fix issue #274 : monitor的cluster一定是failsafe的，而且无法修改
 beiwei30
committed

Commits on Feb 22, 2019

remove unused import
beiwei30
committed