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

Example 41 with RoutingTable

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

the class SingleShardOneReplicaRoutingTests method testSingleIndexFirstStartPrimaryThenBackups.

public void testSingleIndexFirstStartPrimaryThenBackups() {
    AllocationService strategy = createAllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).build());
    logger.info("Building initial routing table");
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).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(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(1).state(), equalTo(UNASSIGNED));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).currentNodeId(), nullValue());
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(1).currentNodeId(), nullValue());
    logger.info("Adding one node and performing rerouting");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1"))).build();
    ClusterState newState = strategy.reroute(clusterState, "reroute");
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(INITIALIZING));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo("node1"));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), nullValue());
    logger.info("Add another node and perform rerouting, nothing will happen since primary shards not started");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node2"))).build();
    newState = strategy.reroute(clusterState, "reroute");
    assertThat(newState, equalTo(clusterState));
    logger.info("Start the primary shard (on node1)");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    newState = strategy.applyStartedShards(clusterState, routingNodes.node("node1").shardsWithState(INITIALIZING));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo("node1"));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    // backup shards are initializing as well, we make sure that they recover from primary *started* shards in the IndicesClusterStateService
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(INITIALIZING));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), equalTo("node2"));
    logger.info("Reroute, nothing should change");
    newState = strategy.reroute(clusterState, "reroute");
    assertThat(newState, equalTo(clusterState));
    logger.info("Start the backup shard");
    routingNodes = clusterState.getRoutingNodes();
    newState = strategy.applyStartedShards(clusterState, routingNodes.node("node2").shardsWithState(INITIALIZING));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo("node1"));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), equalTo("node2"));
    logger.info("Kill node1, backup shard should become primary");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).remove("node1")).build();
    newState = strategy.deassociateDeadNodes(clusterState, true, "reroute");
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo("node2"));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    // backup shards are initializing as well, we make sure that they recover from primary *started* shards in the IndicesClusterStateService
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(UNASSIGNED));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), nullValue());
    logger.info("Start another node, backup shard should start initializing");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    newState = strategy.reroute(clusterState, "reroute");
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo("node2"));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    // backup shards are initializing as well, we make sure that they recover from primary *started* shards in the IndicesClusterStateService
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(INITIALIZING));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), equalTo("node3"));
}

Example 42 with RoutingTable

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

the class ThrottlingAllocationTests method createRecoveryStateAndInitalizeAllocations.

private ClusterState createRecoveryStateAndInitalizeAllocations(MetaData metaData, TestGatewayAllocator gatewayAllocator) {
    DiscoveryNode node1 = newNode("node1");
    MetaData.Builder metaDataBuilder = new MetaData.Builder(metaData);
    RoutingTable.Builder routingTableBuilder = RoutingTable.builder();
    for (ObjectCursor<IndexMetaData> cursor : metaData.indices().values()) {
        Index index = cursor.value.getIndex();
        IndexMetaData.Builder indexMetaDataBuilder = IndexMetaData.builder(cursor.value);
        final int recoveryType = randomInt(5);
        if (recoveryType <= 4) {
            addInSyncAllocationIds(index, indexMetaDataBuilder, gatewayAllocator, node1);
        }
        IndexMetaData indexMetaData = indexMetaDataBuilder.build();
        metaDataBuilder.put(indexMetaData, false);
        switch(recoveryType) {
            case 0:
                routingTableBuilder.addAsRecovery(indexMetaData);
                break;
            case 1:
                routingTableBuilder.addAsFromCloseToOpen(indexMetaData);
                break;
            case 2:
                routingTableBuilder.addAsFromDangling(indexMetaData);
                break;
            case 3:
                routingTableBuilder.addAsNewRestore(indexMetaData, new SnapshotRecoverySource(new Snapshot("repo", new SnapshotId("snap", "randomId")), Version.CURRENT, indexMetaData.getIndex().getName()), new IntHashSet());
                break;
            case 4:
                routingTableBuilder.addAsRestore(indexMetaData, new SnapshotRecoverySource(new Snapshot("repo", new SnapshotId("snap", "randomId")), Version.CURRENT, indexMetaData.getIndex().getName()));
                break;
            case 5:
                routingTableBuilder.addAsNew(indexMetaData);
                break;
            default:
                throw new IndexOutOfBoundsException();
        }
    }
    return ClusterState.builder(CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).nodes(DiscoveryNodes.builder().add(node1)).metaData(metaDataBuilder.build()).routingTable(routingTableBuilder.build()).build();
}

Example 43 with RoutingTable

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

the class UpdateNumberOfReplicasTests method testUpdateNumberOfReplicas.

public void testUpdateNumberOfReplicas() {
    AllocationService strategy = createAllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).build());
    logger.info("Building initial routing table");
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).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(initialRoutingTable.index("test").shards().size(), equalTo(1));
    assertThat(initialRoutingTable.index("test").shard(0).size(), equalTo(2));
    assertThat(initialRoutingTable.index("test").shard(0).shards().size(), equalTo(2));
    assertThat(initialRoutingTable.index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
    assertThat(initialRoutingTable.index("test").shard(0).shards().get(1).state(), equalTo(UNASSIGNED));
    assertThat(initialRoutingTable.index("test").shard(0).shards().get(0).currentNodeId(), nullValue());
    assertThat(initialRoutingTable.index("test").shard(0).shards().get(1).currentNodeId(), nullValue());
    logger.info("Adding two nodes and performing rerouting");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    logger.info("Start all the primary shards");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    logger.info("Start all the replica shards");
    routingNodes = clusterState.getRoutingNodes();
    ClusterState newState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    final String nodeHoldingPrimary = clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId();
    final String nodeHoldingReplica = clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId();
    assertThat(nodeHoldingPrimary, not(equalTo(nodeHoldingReplica)));
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo(nodeHoldingPrimary));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), equalTo(nodeHoldingReplica));
    logger.info("add another replica");
    routingNodes = clusterState.getRoutingNodes();
    RoutingTable updatedRoutingTable = RoutingTable.builder(clusterState.routingTable()).updateNumberOfReplicas(2).build();
    metaData = MetaData.builder(clusterState.metaData()).updateNumberOfReplicas(2).build();
    clusterState = ClusterState.builder(clusterState).routingTable(updatedRoutingTable).metaData(metaData).build();
    assertThat(clusterState.metaData().index("test").getNumberOfReplicas(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(3));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo(nodeHoldingPrimary));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), equalTo(nodeHoldingReplica));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(1).state(), equalTo(UNASSIGNED));
    logger.info("Add another node and start the added replica");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    newState = strategy.reroute(clusterState, "reroute");
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(3));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo(nodeHoldingPrimary));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(STARTED).get(0).currentNodeId(), equalTo(nodeHoldingReplica));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(INITIALIZING).size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(INITIALIZING).get(0).currentNodeId(), equalTo("node3"));
    routingNodes = clusterState.getRoutingNodes();
    newState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(3));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo(nodeHoldingPrimary));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(STARTED).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(STARTED).get(0).currentNodeId(), anyOf(equalTo(nodeHoldingReplica), equalTo("node3")));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShardsWithState(STARTED).get(1).currentNodeId(), anyOf(equalTo(nodeHoldingReplica), equalTo("node3")));
    logger.info("now remove a replica");
    routingNodes = clusterState.getRoutingNodes();
    updatedRoutingTable = RoutingTable.builder(clusterState.routingTable()).updateNumberOfReplicas(1).build();
    metaData = MetaData.builder(clusterState.metaData()).updateNumberOfReplicas(1).build();
    clusterState = ClusterState.builder(clusterState).routingTable(updatedRoutingTable).metaData(metaData).build();
    assertThat(clusterState.metaData().index("test").getNumberOfReplicas(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(2));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), equalTo(nodeHoldingPrimary));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).state(), equalTo(STARTED));
    assertThat(clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId(), anyOf(equalTo(nodeHoldingReplica), equalTo("node3")));
    logger.info("do a reroute, should remain the same");
    newState = strategy.reroute(clusterState, "reroute");
    assertThat(newState, equalTo(clusterState));
}

Example 44 with RoutingTable

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

the class DiskThresholdDeciderTests method testDiskThresholdWithAbsoluteSizes.

public void testDiskThresholdWithAbsoluteSizes() {
    Settings diskSettings = Settings.builder().put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_LOW_DISK_WATERMARK_SETTING.getKey(), "30b").put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "9b").build();
    ImmutableOpenMap.Builder<String, DiskUsage> usagesBuilder = ImmutableOpenMap.builder();
    // 90% used
    usagesBuilder.put("node1", new DiskUsage("node1", "n1", "/dev/null", 100, 10));
    // 90% used
    usagesBuilder.put("node2", new DiskUsage("node2", "n2", "/dev/null", 100, 10));
    // 40% used
    usagesBuilder.put("node3", new DiskUsage("node3", "n3", "/dev/null", 100, 60));
    // 20% used
    usagesBuilder.put("node4", new DiskUsage("node4", "n4", "/dev/null", 100, 80));
    // 15% used
    usagesBuilder.put("node5", new DiskUsage("node5", "n5", "/dev/null", 100, 85));
    ImmutableOpenMap<String, DiskUsage> usages = usagesBuilder.build();
    ImmutableOpenMap.Builder<String, Long> shardSizesBuilder = ImmutableOpenMap.builder();
    // 10 bytes
    shardSizesBuilder.put("[test][0][p]", 10L);
    shardSizesBuilder.put("[test][0][r]", 10L);
    ImmutableOpenMap<String, Long> shardSizes = shardSizesBuilder.build();
    final ClusterInfo clusterInfo = new DevNullClusterInfo(usages, usages, shardSizes);
    ClusterSettings clusterSettings = new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS);
    AllocationDeciders deciders = new AllocationDeciders(Settings.EMPTY, new HashSet<>(Arrays.asList(new SameShardAllocationDecider(Settings.EMPTY, clusterSettings), makeDecider(diskSettings))));
    ClusterInfoService cis = new ClusterInfoService() {

        @Override
        public ClusterInfo getClusterInfo() {
            logger.info("--> calling fake getClusterInfo");
            return clusterInfo;
        }

        @Override
        public void addListener(Listener listener) {
        // noop
        }
    };
    AllocationService strategy = new AllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build(), deciders, new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), cis);
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(2)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test")).build();
    ClusterState clusterState = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    logger.info("--> adding node1 and node2 node");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Primary should initialize, even though both nodes are over the limit initialize
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
    String nodeWithPrimary, nodeWithoutPrimary;
    if (clusterState.getRoutingNodes().node("node1").size() == 1) {
        nodeWithPrimary = "node1";
        nodeWithoutPrimary = "node2";
    } else {
        nodeWithPrimary = "node2";
        nodeWithoutPrimary = "node1";
    }
    logger.info("--> nodeWithPrimary: {}", nodeWithPrimary);
    logger.info("--> nodeWithoutPrimary: {}", nodeWithoutPrimary);
    // Make node without the primary now habitable to replicas
    usagesBuilder = ImmutableOpenMap.builder(usages);
    // 65% used
    usagesBuilder.put(nodeWithoutPrimary, new DiskUsage(nodeWithoutPrimary, "", "/dev/null", 100, 35));
    usages = usagesBuilder.build();
    final ClusterInfo clusterInfo2 = new DevNullClusterInfo(usages, usages, shardSizes);
    cis = new ClusterInfoService() {

        @Override
        public ClusterInfo getClusterInfo() {
            logger.info("--> calling fake getClusterInfo");
            return clusterInfo2;
        }

        @Override
        public void addListener(Listener listener) {
        // noop
        }
    };
    strategy = new AllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build(), deciders, new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), cis);
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Now the replica should be able to initialize
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(2));
    logger.info("--> start the shards (primaries)");
    clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    logShardStates(clusterState);
    // Assert that we're able to start the primary and replica, since they were both initializing
    assertThat(clusterState.getRoutingNodes().shardsWithState(ShardRoutingState.STARTED).size(), equalTo(2));
    // Assert that node1 got a single shard (the primary), even though its disk usage is too high
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    // Assert that node2 got a single shard (a replica)
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    // Assert that one replica is still unassigned
    //assertThat(clusterState.routingNodes().shardsWithState(ShardRoutingState.UNASSIGNED).size(), equalTo(1));
    logger.info("--> adding node3");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Assert that the replica is initialized now that node3 is available with enough space
    assertThat(clusterState.getRoutingNodes().shardsWithState(ShardRoutingState.STARTED).size(), equalTo(2));
    assertThat(clusterState.getRoutingNodes().shardsWithState(ShardRoutingState.INITIALIZING).size(), equalTo(1));
    logger.info("--> start the shards (replicas)");
    clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    logShardStates(clusterState);
    // Assert that all replicas could be started
    assertThat(clusterState.getRoutingNodes().shardsWithState(ShardRoutingState.STARTED).size(), equalTo(3));
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
    logger.info("--> changing decider settings");
    // Set the low threshold to 60 instead of 70
    // Set the high threshold to 70 instead of 80
    // node2 now should not have new shards allocated to it, but shards can remain
    diskSettings = Settings.builder().put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_LOW_DISK_WATERMARK_SETTING.getKey(), "40b").put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "30b").build();
    deciders = new AllocationDeciders(Settings.EMPTY, new HashSet<>(Arrays.asList(new SameShardAllocationDecider(Settings.EMPTY, clusterSettings), makeDecider(diskSettings))));
    strategy = new AllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build(), deciders, new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), cis);
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Shards remain started
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(3));
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
    logger.info("--> changing settings again");
    // Set the low threshold to 50 instead of 60
    // Set the high threshold to 60 instead of 70
    // node2 now should not have new shards allocated to it, and shards cannot remain
    diskSettings = Settings.builder().put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_LOW_DISK_WATERMARK_SETTING.getKey(), "50b").put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "40b").build();
    deciders = new AllocationDeciders(Settings.EMPTY, new HashSet<>(Arrays.asList(new SameShardAllocationDecider(Settings.EMPTY, clusterSettings), makeDecider(diskSettings))));
    strategy = new AllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build(), deciders, new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), cis);
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Shards remain started
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(3));
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    // Shard hasn't been moved off of node2 yet because there's nowhere for it to go
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
    logger.info("--> adding node4");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node4"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Shards remain started
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(2));
    // One shard is relocating off of node1
    assertThat(clusterState.getRoutingNodes().shardsWithState(RELOCATING).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
    logger.info("--> apply INITIALIZING shards");
    clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    logShardStates(clusterState);
    // primary shard already has been relocated away
    assertThat(clusterState.getRoutingNodes().node(nodeWithPrimary).size(), equalTo(0));
    // node with increased space still has its shard
    assertThat(clusterState.getRoutingNodes().node(nodeWithoutPrimary).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node4").size(), equalTo(1));
    logger.info("--> adding node5");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node5"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // Shards remain started on node3 and node4
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(2));
    // One shard is relocating off of node2 now
    assertThat(clusterState.getRoutingNodes().shardsWithState(RELOCATING).size(), equalTo(1));
    // Initializing on node5
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
    logger.info("--> apply INITIALIZING shards");
    clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    logger.info("--> final cluster state:");
    logShardStates(clusterState);
    // Node1 still has no shards because it has no space for them
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(0));
    // Node5 is available now, so the shard is moved off of node2
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node4").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node5").size(), equalTo(1));
}

Example 45 with RoutingTable

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

the class DiskThresholdDeciderTests method testDiskThresholdWithShardSizes.

public void testDiskThresholdWithShardSizes() {
    Settings diskSettings = Settings.builder().put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_LOW_DISK_WATERMARK_SETTING.getKey(), 0.7).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "71%").build();
    ImmutableOpenMap.Builder<String, DiskUsage> usagesBuilder = ImmutableOpenMap.builder();
    // 69% used
    usagesBuilder.put("node1", new DiskUsage("node1", "n1", "/dev/null", 100, 31));
    // 99% used
    usagesBuilder.put("node2", new DiskUsage("node2", "n2", "/dev/null", 100, 1));
    ImmutableOpenMap<String, DiskUsage> usages = usagesBuilder.build();
    ImmutableOpenMap.Builder<String, Long> shardSizesBuilder = ImmutableOpenMap.builder();
    // 10 bytes
    shardSizesBuilder.put("[test][0][p]", 10L);
    ImmutableOpenMap<String, Long> shardSizes = shardSizesBuilder.build();
    final ClusterInfo clusterInfo = new DevNullClusterInfo(usages, usages, shardSizes);
    AllocationDeciders deciders = new AllocationDeciders(Settings.EMPTY, new HashSet<>(Arrays.asList(new SameShardAllocationDecider(Settings.EMPTY, new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS)), makeDecider(diskSettings))));
    ClusterInfoService cis = new ClusterInfoService() {

        @Override
        public ClusterInfo getClusterInfo() {
            logger.info("--> calling fake getClusterInfo");
            return clusterInfo;
        }

        @Override
        public void addListener(Listener listener) {
        // noop
        }
    };
    AllocationService strategy = new AllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build(), deciders, new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), cis);
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(0)).build();
    RoutingTable routingTable = RoutingTable.builder().addAsNew(metaData.index("test")).build();
    ClusterState clusterState = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(routingTable).build();
    logger.info("--> adding node1");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(// node2 is added because DiskThresholdDecider automatically ignore single-node clusters
    newNode("node2"))).build();
    routingTable = strategy.reroute(clusterState, "reroute").routingTable();
    clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
    logger.info("--> start the shards (primaries)");
    routingTable = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING)).routingTable();
    clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
    logShardStates(clusterState);
    // Shard can't be allocated to node1 (or node2) because it would cause too much usage
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(0));
    // No shards are started, no nodes have enough disk for allocation
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(0));
}