scheduler: fix nil pointer exception

hashicorp · Jul 2, 2018 · 1acbf1d · 1acbf1d
1 parent 22fd627
commit 1acbf1d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/scheduler/generic_sched.go b/scheduler/generic_sched.go
@@ -597,7 +597,7 @@ func (s *GenericScheduler) findPreferredNode(place placementResult) (node *struc
 		var preferredNode *structs.Node
 		ws := memdb.NewWatchSet()
 		preferredNode, err = s.state.NodeByID(ws, prev.NodeID)
-		if preferredNode.Ready() {
+		if preferredNode != nil && preferredNode.Ready() {
 			node = preferredNode
 		}
 	}