Examples with RoutingNodes org.elasticsearch.cluster.routing.RoutingNodes used on opensource projects

Example 61 with RoutingNodes

use of org.elasticsearch.cluster.routing.RoutingNodes in project elasticsearch by elastic.

the class BalancedSingleShardTests method newRoutingAllocation.

private RoutingAllocation newRoutingAllocation(AllocationDeciders deciders, ClusterState state) {
    RoutingAllocation allocation = new RoutingAllocation(deciders, new RoutingNodes(state, false), state, ClusterInfo.EMPTY, System.nanoTime(), false);
    allocation.debugDecision(true);
    return allocation;
}

Example 62 with RoutingNodes

use of org.elasticsearch.cluster.routing.RoutingNodes in project elasticsearch by elastic.

the class ClusterRebalanceRoutingTests method testClusterAllActive1.

public void testClusterAllActive1() {
    AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_ALL_ACTIVE.toString()).build());
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test1")).addAsNew(metaData.index("test2")).build();
    ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    logger.info("start two nodes");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start all the primary shards for test1, replicas will start initializing");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start the test1 replica shards");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start all the primary shards for test2, replicas will start initializing");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    logger.info("start the test2 replica shards");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    logger.info("now, start 1 more node, check that rebalancing happen (for test1) because we set it to all_active");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    routingNodes = clusterState.getRoutingNodes();
    assertThat(routingNodes.node("node3").size(), equalTo(1));
    assertThat(routingNodes.node("node3").iterator().next().shardId().getIndex().getName(), anyOf(equalTo("test1"), equalTo("test2")));
}

Example 63 with RoutingNodes

use of org.elasticsearch.cluster.routing.RoutingNodes in project elasticsearch by elastic.

the class ClusterRebalanceRoutingTests method testAlways.

public void testAlways() {
    AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), ClusterRebalanceAllocationDecider.ClusterRebalanceType.ALWAYS.toString()).build());
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test1")).addAsNew(metaData.index("test2")).build();
    ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    logger.info("start two nodes");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start all the primary shards for test1, replicas will start initializing");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        //            assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start the test1 replica shards");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("now, start 1 more node, check that rebalancing will happen (for test1) because we set it to always");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    routingNodes = clusterState.getRoutingNodes();
    assertThat(routingNodes.node("node3").size(), equalTo(1));
    assertThat(routingNodes.node("node3").iterator().next().shardId().getIndex().getName(), equalTo("test1"));
}

Example 64 with RoutingNodes

use of org.elasticsearch.cluster.routing.RoutingNodes in project elasticsearch by elastic.

the class ClusterRebalanceRoutingTests method testClusterAllActive3.

public void testClusterAllActive3() {
    AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_ALL_ACTIVE.toString()).build());
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test1")).addAsNew(metaData.index("test2")).build();
    ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    logger.info("start two nodes");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start all the primary shards for test1, replicas will start initializing");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start the test1 replica shards");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start all the primary shards for test2, replicas will start initializing");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
    }
    for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    logger.info("now, start 1 more node, check that rebalancing will not happen (for test1) because we set it to all_active");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    routingNodes = clusterState.getRoutingNodes();
    assertThat(routingNodes.node("node3").isEmpty(), equalTo(true));
}

Example 65 with RoutingNodes

use of org.elasticsearch.cluster.routing.RoutingNodes in project elasticsearch by elastic.

the class ConcurrentRebalanceRoutingTests method testClusterConcurrentRebalance.

public void testClusterConcurrentRebalance() {
    AllocationService strategy = createAllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put("cluster.routing.allocation.cluster_concurrent_rebalance", 3).build());
    logger.info("Building initial routing table");
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(5).numberOfReplicas(1)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test")).build();
    ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(5));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).state(), equalTo(UNASSIGNED));
        assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).state(), equalTo(UNASSIGNED));
        assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).currentNodeId(), nullValue());
        assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).currentNodeId(), nullValue());
    }
    logger.info("start two nodes and fully start the shards");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    }
    logger.info("start all the primary shards, replicas will start initializing");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    logger.info("now, start 8 more nodes, and check that no rebalancing/relocation have happened");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3")).add(newNode("node4")).add(newNode("node5")).add(newNode("node6")).add(newNode("node7")).add(newNode("node8")).add(newNode("node9")).add(newNode("node10"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(2));
        assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
    }
    logger.info("start the replica shards, rebalancing should start, but, only 3 should be rebalancing");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    // we only allow one relocation at a time
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(7));
    assertThat(clusterState.routingTable().shardsWithState(RELOCATING).size(), equalTo(3));
    logger.info("finalize this session relocation, 3 more should relocate now");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    // we only allow one relocation at a time
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(7));
    assertThat(clusterState.routingTable().shardsWithState(RELOCATING).size(), equalTo(3));
    logger.info("finalize this session relocation, 2 more should relocate now");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    // we only allow one relocation at a time
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(8));
    assertThat(clusterState.routingTable().shardsWithState(RELOCATING).size(), equalTo(2));
    logger.info("finalize this session relocation, no more relocation");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    // we only allow one relocation at a time
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(10));
    assertThat(clusterState.routingTable().shardsWithState(RELOCATING).size(), equalTo(0));
}