Examples of org.elasticsearch.cluster.node.DiscoveryNodes.delta()


                final LocalDiscovery master = firstMaster;
                master.clusterService.submitStateUpdateTask("local-disco-update", new ClusterStateUpdateTask() {
                    @Override public ClusterState execute(ClusterState currentState) {
                        DiscoveryNodes newNodes = currentState.nodes().removeDeadMembers(newMembers, master.localNode.id());
                        DiscoveryNodes.Delta delta = newNodes.delta(currentState.nodes());
                        if (delta.added()) {
                            logger.warn("No new nodes should be created when a new discovery view is accepted");
                        }
                        return newClusterStateBuilder().state(currentState).nodes(newNodes).build();
                    }

                final LocalDiscovery master = firstMaster;
                master.clusterService.submitStateUpdateTask("local-disco-update", new ClusterStateNonMasterUpdateTask() {
                    @Override
                    public ClusterState execute(ClusterState currentState) {
                        DiscoveryNodes newNodes = currentState.nodes().removeDeadMembers(newMembers, master.localNode.id());
                        DiscoveryNodes.Delta delta = newNodes.delta(currentState.nodes());
                        if (delta.added()) {
                            logger.warn("No new nodes should be created when a new discovery view is accepted");
                        }
                        // reroute here, so we eagerly remove dead nodes from the routing
                        ClusterState updatedState = ClusterState.builder(currentState).nodes(newNodes).build();

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