server: resign pd leader when it is not same as etcd leader. #1039
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* server: skip check a region if there is already a pending operator. (#1029) * pdctl, api, schedule: pdctl supports scatter region. (#1028) * add change log (#1024) * scheduler: hot write scheduler randomly select the balance strategy (#1034) * *: new store region score function for balance (#1014) * core: adjust capacity to fit for more cases (#1035) * check config validation (#1036) * *: add metrics for hotspot cache (#1027) * Refine install instructions. (#1041) These extra steps can help new users who are perhaps not quite so familiar with Go setup and conventions. * *: add change log for 2.0 GA (#1038) * *: add change log for ga. * scheduler: adjust metrics (#1042) * fix parse error of config.toml (#1043) * server: resign pd leader when it is not same as etcd leader. (#1039) * server: fix the valid scheduler was deleted when start coordinator (#1045) * server: fix the valid scheduler was deleted when start coordinator
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When leader priority is updated on the fly, etcd leader is transferred to the one has the highest priority, while PD leader is not changed. This PR makes sure PD leader switches the same instance.