Examples with ClusterInfoService org.elasticsearch.cluster.ClusterInfoService used on opensource projects

Example 1 with ClusterInfoService

use of org.elasticsearch.cluster.ClusterInfoService 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 2 with ClusterInfoService

use of org.elasticsearch.cluster.ClusterInfoService 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));
}

Example 3 with ClusterInfoService

use of org.elasticsearch.cluster.ClusterInfoService in project elasticsearch by elastic.

the class DiskThresholdDeciderTests method testCanRemainWithShardRelocatingAway.

public void testCanRemainWithShardRelocatingAway() {
    Settings diskSettings = Settings.builder().put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_INCLUDE_RELOCATIONS_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_LOW_DISK_WATERMARK_SETTING.getKey(), "60%").put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "70%").build();
    // We have an index with 2 primary shards each taking 40 bytes. Each node has 100 bytes available
    ImmutableOpenMap.Builder<String, DiskUsage> usagesBuilder = ImmutableOpenMap.builder();
    // 80% used
    usagesBuilder.put("node1", new DiskUsage("node1", "n1", "/dev/null", 100, 20));
    // 0% used
    usagesBuilder.put("node2", new DiskUsage("node2", "n2", "/dev/null", 100, 100));
    ImmutableOpenMap<String, DiskUsage> usages = usagesBuilder.build();
    ImmutableOpenMap.Builder<String, Long> shardSizesBuilder = ImmutableOpenMap.builder();
    shardSizesBuilder.put("[test][0][p]", 40L);
    shardSizesBuilder.put("[test][1][p]", 40L);
    shardSizesBuilder.put("[foo][0][p]", 10L);
    ImmutableOpenMap<String, Long> shardSizes = shardSizesBuilder.build();
    final ClusterInfo clusterInfo = new DevNullClusterInfo(usages, usages, shardSizes);
    DiskThresholdDecider diskThresholdDecider = makeDecider(diskSettings);
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(2).numberOfReplicas(0)).put(IndexMetaData.builder("foo").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(0)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test")).addAsNew(metaData.index("foo")).build();
    DiscoveryNode discoveryNode1 = new DiscoveryNode("node1", buildNewFakeTransportAddress(), emptyMap(), MASTER_DATA_ROLES, Version.CURRENT);
    DiscoveryNode discoveryNode2 = new DiscoveryNode("node2", buildNewFakeTransportAddress(), emptyMap(), MASTER_DATA_ROLES, Version.CURRENT);
    DiscoveryNodes discoveryNodes = DiscoveryNodes.builder().add(discoveryNode1).add(discoveryNode2).build();
    ClusterState baseClusterState = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).nodes(discoveryNodes).build();
    // Two shards consuming each 80% of disk space while 70% is allowed, so shard 0 isn't allowed here
    ShardRouting firstRouting = TestShardRouting.newShardRouting("test", 0, "node1", null, true, ShardRoutingState.STARTED);
    ShardRouting secondRouting = TestShardRouting.newShardRouting("test", 1, "node1", null, true, ShardRoutingState.STARTED);
    RoutingNode firstRoutingNode = new RoutingNode("node1", discoveryNode1, firstRouting, secondRouting);
    RoutingTable.Builder builder = RoutingTable.builder().add(IndexRoutingTable.builder(firstRouting.index()).addIndexShard(new IndexShardRoutingTable.Builder(firstRouting.shardId()).addShard(firstRouting).build()).addIndexShard(new IndexShardRoutingTable.Builder(secondRouting.shardId()).addShard(secondRouting).build()));
    ClusterState clusterState = ClusterState.builder(baseClusterState).routingTable(builder.build()).build();
    RoutingAllocation routingAllocation = new RoutingAllocation(null, new RoutingNodes(clusterState), clusterState, clusterInfo, System.nanoTime(), false);
    routingAllocation.debugDecision(true);
    Decision decision = diskThresholdDecider.canRemain(firstRouting, firstRoutingNode, routingAllocation);
    assertThat(decision.type(), equalTo(Decision.Type.NO));
    assertThat(((Decision.Single) decision).getExplanation(), containsString("the shard cannot remain on this node because it is above the high watermark cluster setting " + "[cluster.routing.allocation.disk.watermark.high=70%] and there is less than the required [30.0%] free disk on node, " + "actual free: [20.0%]"));
    // Two shards consuming each 80% of disk space while 70% is allowed, but one is relocating, so shard 0 can stay
    firstRouting = TestShardRouting.newShardRouting("test", 0, "node1", null, true, ShardRoutingState.STARTED);
    secondRouting = TestShardRouting.newShardRouting("test", 1, "node1", "node2", true, ShardRoutingState.RELOCATING);
    ShardRouting fooRouting = TestShardRouting.newShardRouting("foo", 0, "node1", null, true, ShardRoutingState.UNASSIGNED);
    firstRoutingNode = new RoutingNode("node1", discoveryNode1, firstRouting, secondRouting);
    builder = RoutingTable.builder().add(IndexRoutingTable.builder(firstRouting.index()).addIndexShard(new IndexShardRoutingTable.Builder(firstRouting.shardId()).addShard(firstRouting).build()).addIndexShard(new IndexShardRoutingTable.Builder(secondRouting.shardId()).addShard(secondRouting).build()));
    clusterState = ClusterState.builder(baseClusterState).routingTable(builder.build()).build();
    routingAllocation = new RoutingAllocation(null, new RoutingNodes(clusterState), clusterState, clusterInfo, System.nanoTime(), false);
    routingAllocation.debugDecision(true);
    decision = diskThresholdDecider.canRemain(firstRouting, firstRoutingNode, routingAllocation);
    assertThat(decision.type(), equalTo(Decision.Type.YES));
    assertEquals("there is enough disk on this node for the shard to remain, free: [60b]", ((Decision.Single) decision).getExplanation());
    decision = diskThresholdDecider.canAllocate(fooRouting, firstRoutingNode, routingAllocation);
    assertThat(decision.type(), equalTo(Decision.Type.NO));
    if (fooRouting.recoverySource().getType() == RecoverySource.Type.EMPTY_STORE) {
        assertThat(((Decision.Single) decision).getExplanation(), containsString("the node is above the high watermark cluster setting [cluster.routing.allocation.disk.watermark.high=70%], using " + "more disk space than the maximum allowed [70.0%], actual free: [20.0%]"));
    } else {
        assertThat(((Decision.Single) decision).getExplanation(), containsString("the node is above the low watermark cluster setting [cluster.routing.allocation.disk.watermark.low=60%], using more " + "disk space than the maximum allowed [60.0%], actual free: [20.0%]"));
    }
    // Creating AllocationService instance and the services it depends on...
    ClusterInfoService cis = new ClusterInfoService() {

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

        @Override
        public void addListener(Listener listener) {
        // noop
        }
    };
    AllocationDeciders deciders = new AllocationDeciders(Settings.EMPTY, new HashSet<>(Arrays.asList(new SameShardAllocationDecider(Settings.EMPTY, new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS)), diskThresholdDecider)));
    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);
    // Ensure that the reroute call doesn't alter the routing table, since the first primary is relocating away
    // and therefor we will have sufficient disk space on node1.
    ClusterState result = strategy.reroute(clusterState, "reroute");
    assertThat(result, equalTo(clusterState));
    assertThat(result.routingTable().index("test").getShards().get(0).primaryShard().state(), equalTo(STARTED));
    assertThat(result.routingTable().index("test").getShards().get(0).primaryShard().currentNodeId(), equalTo("node1"));
    assertThat(result.routingTable().index("test").getShards().get(0).primaryShard().relocatingNodeId(), nullValue());
    assertThat(result.routingTable().index("test").getShards().get(1).primaryShard().state(), equalTo(RELOCATING));
    assertThat(result.routingTable().index("test").getShards().get(1).primaryShard().currentNodeId(), equalTo("node1"));
    assertThat(result.routingTable().index("test").getShards().get(1).primaryShard().relocatingNodeId(), equalTo("node2"));
}

Example 4 with ClusterInfoService

use of org.elasticsearch.cluster.ClusterInfoService in project elasticsearch by elastic.

the class DiskThresholdDeciderTests method testShardRelocationsTakenIntoAccount.

public void testShardRelocationsTakenIntoAccount() {
    Settings diskSettings = Settings.builder().put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), true).put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_INCLUDE_RELOCATIONS_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(), 0.8).build();
    ImmutableOpenMap.Builder<String, DiskUsage> usagesBuilder = ImmutableOpenMap.builder();
    // 60% used
    usagesBuilder.put("node1", new DiskUsage("node1", "n1", "/dev/null", 100, 40));
    // 60% used
    usagesBuilder.put("node2", new DiskUsage("node2", "n2", "/dev/null", 100, 40));
    // 60% used
    usagesBuilder.put("node3", new DiskUsage("node3", "n3", "/dev/null", 100, 40));
    ImmutableOpenMap<String, DiskUsage> usages = usagesBuilder.build();
    ImmutableOpenMap.Builder<String, Long> shardSizesBuilder = ImmutableOpenMap.builder();
    // 14 bytes
    shardSizesBuilder.put("[test][0][p]", 14L);
    shardSizesBuilder.put("[test][0][r]", 14L);
    // 1 bytes
    shardSizesBuilder.put("[test2][0][p]", 1L);
    shardSizesBuilder.put("[test2][0][r]", 1L);
    ImmutableOpenMap<String, Long> shardSizes = shardSizesBuilder.build();
    final ClusterInfo clusterInfo = new DevNullClusterInfo(usages, usages, shardSizes);
    DiskThresholdDecider decider = makeDecider(diskSettings);
    AllocationDeciders deciders = new AllocationDeciders(Settings.EMPTY, new HashSet<>(Arrays.asList(new SameShardAllocationDecider(Settings.EMPTY, new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS)), decider)));
    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(1)).put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test")).addAsNew(metaData.index("test2")).build();
    ClusterState clusterState = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    logger.info("--> adding two nodes");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // shards should be initializing
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(4));
    logger.info("--> start the shards");
    clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    logShardStates(clusterState);
    // Assert that we're able to start the primary and replicas
    assertThat(clusterState.getRoutingNodes().shardsWithState(ShardRoutingState.STARTED).size(), equalTo(4));
    logger.info("--> adding node3");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
    AllocationCommand relocate1 = new MoveAllocationCommand("test", 0, "node2", "node3");
    AllocationCommands cmds = new AllocationCommands(relocate1);
    clusterState = strategy.reroute(clusterState, cmds, false, false).getClusterState();
    logShardStates(clusterState);
    AllocationCommand relocate2 = new MoveAllocationCommand("test2", 0, "node2", "node3");
    cmds = new AllocationCommands(relocate2);
    try {
        // The shard for the "test" index is already being relocated to
        // node3, which will put it over the low watermark when it
        // completes, with shard relocations taken into account this should
        // throw an exception about not being able to complete
        strategy.reroute(clusterState, cmds, false, false);
        fail("should not have been able to reroute the shard");
    } catch (IllegalArgumentException e) {
        assertThat("can't be allocated because there isn't enough room: " + e.getMessage(), e.getMessage(), containsString("the node is above the low watermark cluster setting " + "[cluster.routing.allocation.disk.watermark.low=0.7], using more disk space than the maximum " + "allowed [70.0%], actual free: [26.0%]"));
    }
}

Example 5 with ClusterInfoService

use of org.elasticsearch.cluster.ClusterInfoService in project elasticsearch by elastic.

the class RebalanceAfterActiveTests method testRebalanceOnlyAfterAllShardsAreActive.

public void testRebalanceOnlyAfterAllShardsAreActive() {
    final long[] sizes = new long[5];
    for (int i = 0; i < sizes.length; i++) {
        sizes[i] = randomIntBetween(0, Integer.MAX_VALUE);
    }
    AllocationService strategy = createAllocationService(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(), new ClusterInfoService() {

        @Override
        public ClusterInfo getClusterInfo() {
            return new ClusterInfo() {

                @Override
                public Long getShardSize(ShardRouting shardRouting) {
                    if (shardRouting.getIndexName().equals("test")) {
                        return sizes[shardRouting.getId()];
                    }
                    return null;
                }
            };
        }

        @Override
        public void addListener(Listener listener) {
        }
    });
    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));
    routingNodes = clusterState.getRoutingNodes();
    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));
        assertEquals(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).getExpectedShardSize(), sizes[i]);
    }
    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");
    routingNodes = clusterState.getRoutingNodes();
    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));
        assertEquals(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).getExpectedShardSize(), sizes[i]);
    }
    logger.info("start the replica shards, rebalancing should start");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    // we only allow one relocation at a time
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(5));
    assertThat(clusterState.routingTable().shardsWithState(RELOCATING).size(), equalTo(5));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        int num = 0;
        for (ShardRouting routing : clusterState.routingTable().index("test").shard(i).shards()) {
            if (routing.state() == RELOCATING || routing.state() == INITIALIZING) {
                assertEquals(routing.getExpectedShardSize(), sizes[i]);
                num++;
            }
        }
        assertTrue(num > 0);
    }
    logger.info("complete relocation, other half of relocation should happen");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    // we now only relocate 3, since 2 remain where they are!
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(7));
    assertThat(clusterState.routingTable().shardsWithState(RELOCATING).size(), equalTo(3));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        for (ShardRouting routing : clusterState.routingTable().index("test").shard(i).shards()) {
            if (routing.state() == RELOCATING || routing.state() == INITIALIZING) {
                assertEquals(routing.getExpectedShardSize(), sizes[i]);
            }
        }
    }
    logger.info("complete relocation, that's it!");
    routingNodes = clusterState.getRoutingNodes();
    clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
    routingNodes = clusterState.getRoutingNodes();
    assertThat(clusterState.routingTable().shardsWithState(STARTED).size(), equalTo(10));
    // make sure we have an even relocation
    for (RoutingNode routingNode : routingNodes) {
        assertThat(routingNode.size(), equalTo(1));
    }
}