// findPreferredNode finds the preferred node for an allocation
func (s *GenericScheduler) findPreferredNode(allocTuple *allocTuple) (node *structs.Node, err error) {
if allocTuple.Alloc != nil {
taskGroup := allocTuple.Alloc.Job.LookupTaskGroup(allocTuple.Alloc.TaskGroup)
if taskGroup == nil {
err = fmt.Errorf("can't find task group of existing allocation %q", allocTuple.Alloc.ID)
return
}
if taskGroup.EphemeralDisk.Sticky == true {
var preferredNode *structs.Node
preferredNode, err = s.state.NodeByID(allocTuple.Alloc.NodeID)
if preferredNode.Ready() {
node = preferredNode
}
}
}
return
}
