Package org.elasticsearch.cluster

Examples of org.elasticsearch.cluster.ClusterState$Custom$Factory

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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        logger.info("Adding two nodes and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1")).put(newNode("node2"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        logger.info("Start the shards (primaries)");
        RoutingNodes routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), anyOf(equalTo("node1"), equalTo("node2")));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).currentNodeId(), anyOf(equalTo("node2"), equalTo("node1")));
        }

        logger.info("Start the shards (backups)");
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), anyOf(equalTo("node1"), equalTo("node2")));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).currentNodeId(), anyOf(equalTo("node2"), equalTo("node1")));
        }

        logger.info("Adding third node and reroute");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node3"))).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED, RELOCATING), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), lessThan(3));
        assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED, RELOCATING), equalTo(2));
        assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), lessThan(3));
        assertThat(routingNodes.node("node3").numberOfShardsWithState(INITIALIZING), equalTo(1));


        logger.info("Fail the shards on node 3");
        ShardRouting shardToFail = routingNodes.node("node3").shards().get(0);
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyFailedShard(clusterState, new ImmutableShardRouting(shardToFail)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED, RELOCATING), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), lessThan(3));
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        logger.info("Adding two nodes and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1")).put(newNode("node2"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        logger.info("Start the shards (primaries)");
        RoutingNodes routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), anyOf(equalTo("node1"), equalTo("node2")));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).currentNodeId(), anyOf(equalTo("node2"), equalTo("node1")));
        }

        logger.info("Start the shards (backups)");
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), anyOf(equalTo("node1"), equalTo("node2")));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).currentNodeId(), anyOf(equalTo("node2"), equalTo("node1")));
        }

        logger.info("fail the primary shard, will have no place to be rerouted to (single node), so stays unassigned");
        ShardRouting shardToFail = new ImmutableShardRouting(routingTable.index("test").shard(0).primaryShard());
        prevRoutingTable = routingTable;
        routingTable = strategy.applyFailedShard(clusterState, shardToFail).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(2));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(2));
        assertThat(routingTable.index("test").shard(0).primaryShard().currentNodeId(), not(equalTo(shardToFail.currentNodeId())));
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        logger.info("Adding single node and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), equalTo("node1"));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
        }

        logger.info("fail the first shard, will have no place to be rerouted to (single node), so stays unassigned");
        prevRoutingTable = routingTable;
        routingTable = strategy.applyFailedShard(clusterState, new ImmutableShardRouting("test", 0, "node1", true, INITIALIZING, 0)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        RoutingNodes routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        logger.info("Adding two nodes and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1")).put(newNode("node2"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), equalTo("node1"));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
        }

        logger.info("fail the first shard, will start INITIALIZING on the second node");
        prevRoutingTable = routingTable;
        routingTable = strategy.applyFailedShard(clusterState, new ImmutableShardRouting("test", 0, "node1", true, INITIALIZING, 0)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        RoutingNodes routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        logger.info("Adding two nodes and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1")).put(newNode("node2"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        logger.info("Start the shards (primaries)");
        RoutingNodes routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), anyOf(equalTo("node1"), equalTo("node2")));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).currentNodeId(), anyOf(equalTo("node2"), equalTo("node1")));
        }

        logger.info("Start the shards (backups)");
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
            assertThat(routingTable.index("test").shard(i).size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(2));
            assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).primaryShard().currentNodeId(), anyOf(equalTo("node1"), equalTo("node2")));
            assertThat(routingTable.index("test").shard(i).replicaShards().size(), equalTo(1));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
            assertThat(routingTable.index("test").shard(i).replicaShards().get(0).currentNodeId(), anyOf(equalTo("node2"), equalTo("node1")));
        }

        logger.info("Adding third node and reroute");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node3"))).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED, RELOCATING), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), lessThan(3));
        assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED, RELOCATING), equalTo(2));
        assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), lessThan(3));
        assertThat(routingNodes.node("node3").numberOfShardsWithState(INITIALIZING), equalTo(1));


        logger.info("Fail the shards on node 3");
        ShardRouting shardToFail = routingNodes.node("node3").shards().get(0);
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyFailedShard(clusterState, new ImmutableShardRouting(shardToFail)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        routingNodes = clusterState.routingNodes();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED, RELOCATING), equalTo(2));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), lessThan(3));
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), nullValue());

        logger.info("Adding one node and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(INITIALIZING));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Rerouting again, nothing should change");
        prevRoutingTable = routingTable;
        clusterState = newClusterStateBuilder().state(clusterState).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        assertThat(routingTable == prevRoutingTable, equalTo(true));
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        logger.info("Marking the shard as started");
        RoutingNodes routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.node("node1").shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable != prevRoutingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(STARTED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Starting another node and making sure nothing changed");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node2"))).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable == prevRoutingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(STARTED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Killing node1 where the shard is, checking the shard is relocated");

        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).remove("node1")).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable != prevRoutingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(INITIALIZING));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node2"));

        logger.info("Start another node, make sure that things remain the same (shard is in node2 and initializing)");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node3"))).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        assertThat(routingTable == prevRoutingTable, equalTo(true));

        logger.info("Start the shard on node 2");
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.node("node2").shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable != prevRoutingTable, equalTo(true));
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), nullValue());

        logger.info("Adding one node and rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).unassigned(), equalTo(false));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(INITIALIZING));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Marking the shard as failed");
        RoutingNodes routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyFailedShard(clusterState, routingNodes.node("node1").shardsWithState(INITIALIZING).get(0)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
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        RoutingTable.Builder routingTableBuilder = routingTable();
        for (int i = 0; i < numberOfIndices; i++) {
            routingTableBuilder.add(indexRoutingTable("test" + i).initializeEmpty(metaData.index("test" + i)));
        }
        RoutingTable routingTable = routingTableBuilder.build();
        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        assertThat(routingTable.indicesRouting().size(), equalTo(numberOfIndices));
        for (int i = 0; i < numberOfIndices; i++) {
            assertThat(routingTable.index("test" + i).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).currentNodeId(), nullValue());
        }

        logger.info("Adding " + (numberOfIndices / 2) + " nodes");
        DiscoveryNodes.Builder nodesBuilder = newNodesBuilder();
        List<DiscoveryNode> nodes = newArrayList();
        for (int i = 0; i < (numberOfIndices / 2); i++) {
            nodesBuilder.put(newNode("node" + i));
        }
        RoutingTable prevRoutingTable = routingTable;
        clusterState = newClusterStateBuilder().state(clusterState).nodes(nodesBuilder).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        for (int i = 0; i < numberOfIndices; i++) {
            assertThat(routingTable.index("test" + i).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).unassigned(), equalTo(false));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).state(), equalTo(INITIALIZING));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).primary(), equalTo(true));
            // make sure we still have 2 shards initializing per node on the first 25 nodes
            String nodeId = routingTable.index("test" + i).shard(0).shards().get(0).currentNodeId();
            int nodeIndex = Integer.parseInt(nodeId.substring("node".length()));
            assertThat(nodeIndex, lessThan(25));
        }
        RoutingNodes routingNodes = clusterState.routingNodes();
        Set<String> encounteredIndices = newHashSet();
        for (RoutingNode routingNode : routingNodes) {
            assertThat(routingNode.numberOfShardsWithState(STARTED), equalTo(0));
            assertThat(routingNode.shards().size(), equalTo(2));
            // make sure we still have 2 shards initializing per node on the only 25 nodes
            int nodeIndex = Integer.parseInt(routingNode.nodeId().substring("node".length()));
            assertThat(nodeIndex, lessThan(25));
            // check that we don't have a shard associated with a node with the same index name (we have a single shard)
            for (MutableShardRouting shardRoutingEntry : routingNode) {
                assertThat(encounteredIndices, not(hasItem(shardRoutingEntry.index())));
                encounteredIndices.add(shardRoutingEntry.index());
            }
        }

        logger.info("Adding additional " + (numberOfIndices / 2) + " nodes, nothing should change");
        nodesBuilder = newNodesBuilder().putAll(clusterState.nodes());
        for (int i = (numberOfIndices / 2); i < numberOfIndices; i++) {
            nodesBuilder.put(newNode("node" + i));
        }
        prevRoutingTable = routingTable;
        clusterState = newClusterStateBuilder().state(clusterState).nodes(nodesBuilder).build();
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        for (int i = 0; i < numberOfIndices; i++) {
            routingTableBuilder.add(indexRoutingTable("test" + i).initializeEmpty(metaData.index("test" + i)));
        }
        RoutingTable routingTable = routingTableBuilder.build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        assertThat(routingTable.indicesRouting().size(), equalTo(numberOfIndices));

        logger.info("Starting 3 nodes and rerouting");
        clusterState = newClusterStateBuilder().state(clusterState)
                .nodes(newNodesBuilder().put(newNode("node1")).put(newNode("node2")).put(newNode("node3")))
                .build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        for (int i = 0; i < numberOfIndices; i++) {
            assertThat(routingTable.index("test" + i).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).state(), equalTo(INITIALIZING));
        }
        RoutingNodes routingNodes = clusterState.routingNodes();
        assertThat(routingNodes.numberOfShardsOfType(INITIALIZING), equalTo(numberOfIndices));
        assertThat(routingNodes.node("node1").numberOfShardsWithState(INITIALIZING), anyOf(equalTo(3), equalTo(4)));
        assertThat(routingNodes.node("node2").numberOfShardsWithState(INITIALIZING), anyOf(equalTo(3), equalTo(4)));
        assertThat(routingNodes.node("node2").numberOfShardsWithState(INITIALIZING), anyOf(equalTo(3), equalTo(4)));

        logger.info("Start two more nodes, things should remain the same");
        clusterState = newClusterStateBuilder().state(clusterState)
                .nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node4")).put(newNode("node5")))
                .build();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();

        assertThat(prevRoutingTable == routingTable, equalTo(true));

        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        for (int i = 0; i < numberOfIndices; i++) {
            assertThat(routingTable.index("test" + i).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).state(), anyOf(equalTo(RELOCATING), equalTo(STARTED)));
        }
        routingNodes = clusterState.routingNodes();
        assertThat("4 source shard routing are relocating", routingNodes.numberOfShardsOfType(RELOCATING), equalTo(4));
        assertThat("4 target shard routing are initializing", routingNodes.numberOfShardsOfType(INITIALIZING), equalTo(4));

        logger.info("Now, mark the relocated as started");
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
//        routingTable = strategy.reroute(new RoutingStrategyInfo(metaData, routingTable), nodes);

        assertThat(prevRoutingTable != routingTable, equalTo(true));
        for (int i = 0; i < numberOfIndices; i++) {
            assertThat(routingTable.index("test" + i).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().size(), equalTo(1));
            assertThat(routingTable.index("test" + i).shard(0).shards().get(0).state(), anyOf(equalTo(RELOCATING), equalTo(STARTED)));
        }
        routingNodes = clusterState.routingNodes();
        assertThat(routingNodes.numberOfShardsOfType(STARTED), equalTo(numberOfIndices));
        for (RoutingNode routingNode : routingNodes) {
            assertThat(routingNode.numberOfShardsWithState(STARTED), equalTo(2));
        }
    }
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test").initializeEmpty(metaData.index("test")))
                .build();

        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();

        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), nullValue());

        logger.info("Adding one node and performing rerouting");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1"))).build();
        RoutingTable prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(INITIALIZING));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Rerouting again, nothing should change");
        prevRoutingTable = routingTable;
        clusterState = newClusterStateBuilder().state(clusterState).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        assertThat(routingTable == prevRoutingTable, equalTo(true));
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        logger.info("Marking the shard as started");
        RoutingNodes routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.node("node1").shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable != prevRoutingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(STARTED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Starting another node and making sure nothing changed");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node2"))).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable == prevRoutingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(STARTED));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));

        logger.info("Killing node1 where the shard is, checking the shard is relocated");

        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).remove("node1")).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable != prevRoutingTable, equalTo(true));
        assertThat(routingTable.index("test").shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().size(), equalTo(1));
        assertThat(routingTable.index("test").shard(0).shards().get(0).state(), equalTo(INITIALIZING));
        assertThat(routingTable.index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node2"));

        logger.info("Start another node, make sure that things remain the same (shard is in node2 and initializing)");
        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().putAll(clusterState.nodes()).put(newNode("node3"))).build();
        prevRoutingTable = routingTable;
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
        assertThat(routingTable == prevRoutingTable, equalTo(true));

        logger.info("Start the shard on node 2");
        routingNodes = clusterState.routingNodes();
        prevRoutingTable = routingTable;
        routingTable = strategy.applyStartedShards(clusterState, routingNodes.node("node2").shardsWithState(INITIALIZING)).routingTable();
        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();

        assertThat(routingTable != prevRoutingTable, equalTo(true));
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