misc: Fix typos and spelling errors

etcd/callback.go

@@ -271,7 +271,7 @@ func (obj *EmbdEtcd) nominateCb(ctx context.Context) error {
 // didn't remove a member...
 // XXX: If the leader changes, do we need to kick the volunteerCb or anything
 // else that might have required a leader and which returned because it did not
-// have one, thus loosing an event?
+// have one, thus losing an event?
 func (obj *EmbdEtcd) volunteerCb(ctx context.Context) error {
 	// Ensure that only one copy of this function is run simultaneously.
 	// It's not entirely clear if this can ever happen or if it's needed,

etcd/scheduler/options.go

@@ -84,7 +84,7 @@ func MaxCount(maxCount int) Option {
 	}
 }
 
-// ReuseLease specifies whether we should try and re-use the lease between runs.
+// ReuseLease specifies whether we should try and reuse the lease between runs.
 // Ordinarily it would get discarded with each new version (deploy) of the code.
 func ReuseLease(reuseLease bool) Option {
 	return func(so *schedulerOptions) {

etcd/scheduler/rrstrategy.go

@@ -72,7 +72,7 @@ func (obj *rrStrategy) Schedule(hostnames map[string]string, opts *schedulerOpti
 		}
 	}
 
-	// remove any hosts we previouly knew about from the list
+	// remove any hosts we previously knew about from the list
 	for ix := len(obj.hosts) - 1; ix >= 0; ix-- {
 		if !util.StrInList(obj.hosts[ix], sortedHosts) {
 			// delete entry at this index

etcd/scheduler/scheduler.go

@@ -146,8 +146,8 @@ func Schedule(client *etcd.Client, path string, hostname string, opts ...Option)
 
 	sessionOptions := []concurrency.SessionOption{}
 
-	// here we try to re-use lease between multiple runs of the code
-	// TODO: is it a good idea to try and re-use the lease b/w runs?
+	// here we try to reuse lease between multiple runs of the code
+	// TODO: is it a good idea to try and reuse the lease b/w runs?
 	if options.reuseLease {
 		if leaseID, exists := schedulerLeases[path]; exists {
 			sessionOptions = append(sessionOptions, concurrency.WithLease(leaseID))