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master: check peers for existing leader before starting a leader election

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fix https://github.com/chrislusf/seaweedfs/issues/1509
This commit is contained in:
Chris Lu
2020-10-07 01:25:39 -07:00
parent c543762e23
commit da4edf3651
8 changed files with 216 additions and 192 deletions
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5
weed/server/master_server.go
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@@ -138,14 +138,11 @@ func NewMasterServer(r *mux.Router, option *MasterOption, peers []string) *Maste
func (ms *MasterServer) SetRaftServer(raftServer *RaftServer) {
ms.Topo.RaftServer = raftServer.raftServer
ms.Topo.RaftServer.AddEventListener(raft.LeaderChangeEventType, func(e raft.Event) {
glog.V(0).Infof("event: %+v", e)
glog.V(0).Infof("leader change event: %+v => %+v", e.PrevValue(), e.Value())
if ms.Topo.RaftServer.Leader() != "" {
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", ms.Topo.RaftServer.Leader(), "becomes leader.")
}
})
ms.Topo.RaftServer.AddEventListener(raft.StateChangeEventType, func(e raft.Event) {
glog.V(0).Infof("state change: %+v", e)
})
if ms.Topo.IsLeader() {
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", "I am the leader!")
} else {