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

Example 31 with RoutingNodes

use of org.opensearch.cluster.routing.RoutingNodes in project OpenSearch by opensearch-project.

the class TenShardsOneReplicaRoutingTests method testSingleIndexFirstStartPrimaryThenBackups.

public void testSingleIndexFirstStartPrimaryThenBackups() {
    AllocationService strategy = createAllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put("cluster.routing.allocation.node_initial_primaries_recoveries", 10).put(ThrottlingAllocationDecider.CLUSTER_ROUTING_ALLOCATION_NODE_INITIAL_REPLICAS_RECOVERIES_SETTING.getKey(), 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).put("cluster.routing.allocation.balance.index", 0.0f).put("cluster.routing.allocation.balance.replica", 1.0f).put("cluster.routing.allocation.balance.primary", 0.0f).build());
    logger.info("Building initial routing table");
    Metadata metadata = Metadata.builder().put(IndexMetadata.builder("test").settings(settings(Version.CURRENT)).numberOfShards(10).numberOfReplicas(1)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metadata.index("test")).build();
    ClusterState clusterState = ClusterState.builder(org.opensearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metadata(metadata).routingTable(initialRoutingTable).build();
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(10));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).size(), equalTo(2));
        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("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(10));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).size(), equalTo(2));
        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).primaryShard().currentNodeId(), equalTo("node1"));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().size(), equalTo(1));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).currentNodeId(), nullValue());
    }
    logger.info("Add another node and perform rerouting, nothing will happen since primary 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 = startInitializingShardsAndReroute(strategy, clusterState, routingNodes.node("node1"));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(10));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).size(), equalTo(2));
        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).primaryShard().currentNodeId(), equalTo("node1"));
        assertThat(clusterState.routingTable().index("test").shard(i).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(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
        assertThat(clusterState.routingTable().index("test").shard(i).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 = startInitializingShardsAndReroute(strategy, clusterState, routingNodes.node("node2"));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    routingNodes = clusterState.getRoutingNodes();
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(10));
    for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
        assertThat(clusterState.routingTable().index("test").shard(i).size(), equalTo(2));
        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).primaryShard().currentNodeId(), equalTo("node1"));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().size(), equalTo(1));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
        assertThat(clusterState.routingTable().index("test").shard(i).replicaShards().get(0).currentNodeId(), equalTo("node2"));
    }
    assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(10));
    assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(10));
    logger.info("Add another node and perform rerouting");
    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;
    routingNodes = clusterState.getRoutingNodes();
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(10));
    assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED, RELOCATING), equalTo(10));
    assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), lessThan(10));
    assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED, RELOCATING), equalTo(10));
    assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), lessThan(10));
    assertThat(routingNodes.node("node3").numberOfShardsWithState(INITIALIZING), equalTo(6));
    logger.info("Start the shards on node 3");
    routingNodes = clusterState.getRoutingNodes();
    newState = startInitializingShardsAndReroute(strategy, clusterState, routingNodes.node("node3"));
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    routingNodes = clusterState.getRoutingNodes();
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(10));
    assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(7));
    assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(7));
    assertThat(routingNodes.node("node3").numberOfShardsWithState(STARTED), equalTo(6));
}

Example 32 with RoutingNodes

use of org.opensearch.cluster.routing.RoutingNodes in project OpenSearch by opensearch-project.

the class SingleShardNoReplicasRoutingTests method testSingleIndexShardFailed.

public void testSingleIndexShardFailed() {
    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(0)).build();
    RoutingTable.Builder routingTableBuilder = RoutingTable.builder().addAsNew(metadata.index("test"));
    ClusterState clusterState = ClusterState.builder(org.opensearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metadata(metadata).routingTable(routingTableBuilder.build()).build();
    assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).currentNodeId(), nullValue());
    logger.info("Adding one node and 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(1));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).unassigned(), equalTo(false));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).state(), equalTo(INITIALIZING));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).currentNodeId(), equalTo("node1"));
    logger.info("Marking the shard as failed");
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    newState = strategy.applyFailedShard(clusterState, routingNodes.node("node1").shardsWithState(INITIALIZING).get(0), randomBoolean());
    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(1));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().size(), equalTo(1));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).state(), equalTo(UNASSIGNED));
    assertThat(clusterState.routingTable().index("test").shard(0).shards().get(0).currentNodeId(), nullValue());
}

Example 33 with RoutingNodes

use of org.opensearch.cluster.routing.RoutingNodes in project OpenSearch by opensearch-project.

the class ReplicaShardAllocatorTests method onePrimaryOnNode1And1ReplicaRecovering.

private RoutingAllocation onePrimaryOnNode1And1ReplicaRecovering(AllocationDeciders deciders, UnassignedInfo unassignedInfo) {
    ShardRouting primaryShard = TestShardRouting.newShardRouting(shardId, node1.getId(), true, ShardRoutingState.STARTED);
    Metadata metadata = Metadata.builder().put(IndexMetadata.builder(shardId.getIndexName()).settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1).putInSyncAllocationIds(0, Sets.newHashSet(primaryShard.allocationId().getId()))).build();
    RoutingTable routingTable = RoutingTable.builder().add(IndexRoutingTable.builder(shardId.getIndex()).addIndexShard(new IndexShardRoutingTable.Builder(shardId).addShard(primaryShard).addShard(TestShardRouting.newShardRouting(shardId, node2.getId(), null, false, ShardRoutingState.INITIALIZING, unassignedInfo)).build())).build();
    ClusterState state = ClusterState.builder(org.opensearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metadata(metadata).routingTable(routingTable).nodes(DiscoveryNodes.builder().add(node1).add(node2).add(node3)).build();
    return new RoutingAllocation(deciders, new RoutingNodes(state, false), state, ClusterInfo.EMPTY, SnapshotShardSizeInfo.EMPTY, System.nanoTime());
}

Example 34 with RoutingNodes

use of org.opensearch.cluster.routing.RoutingNodes in project OpenSearch by opensearch-project.

the class AllocateEmptyPrimaryAllocationCommand method execute.

@Override
public RerouteExplanation execute(RoutingAllocation allocation, boolean explain) {
    final DiscoveryNode discoNode;
    try {
        discoNode = allocation.nodes().resolveNode(node);
    } catch (IllegalArgumentException e) {
        return explainOrThrowRejectedCommand(explain, allocation, e);
    }
    final RoutingNodes routingNodes = allocation.routingNodes();
    RoutingNode routingNode = routingNodes.node(discoNode.getId());
    if (routingNode == null) {
        return explainOrThrowMissingRoutingNode(allocation, explain, discoNode);
    }
    try {
        allocation.routingTable().shardRoutingTable(index, shardId).primaryShard();
    } catch (IndexNotFoundException | ShardNotFoundException e) {
        return explainOrThrowRejectedCommand(explain, allocation, e);
    }
    ShardRouting shardRouting = null;
    for (ShardRouting shard : allocation.routingNodes().unassigned()) {
        if (shard.getIndexName().equals(index) && shard.getId() == shardId && shard.primary()) {
            shardRouting = shard;
            break;
        }
    }
    if (shardRouting == null) {
        return explainOrThrowRejectedCommand(explain, allocation, "primary [" + index + "][" + shardId + "] is already assigned");
    }
    if (shardRouting.recoverySource().getType() != RecoverySource.Type.EMPTY_STORE && acceptDataLoss == false) {
        String dataLossWarning = "allocating an empty primary for [" + index + "][" + shardId + "] can result in data loss. Please confirm by setting the accept_data_loss parameter to true";
        return explainOrThrowRejectedCommand(explain, allocation, dataLossWarning);
    }
    UnassignedInfo unassignedInfoToUpdate = null;
    if (shardRouting.unassignedInfo().getReason() != UnassignedInfo.Reason.FORCED_EMPTY_PRIMARY) {
        String unassignedInfoMessage = "force empty allocation from previous reason " + shardRouting.unassignedInfo().getReason() + ", " + shardRouting.unassignedInfo().getMessage();
        unassignedInfoToUpdate = new UnassignedInfo(UnassignedInfo.Reason.FORCED_EMPTY_PRIMARY, unassignedInfoMessage, shardRouting.unassignedInfo().getFailure(), 0, System.nanoTime(), System.currentTimeMillis(), false, shardRouting.unassignedInfo().getLastAllocationStatus(), Collections.emptySet());
    }
    initializeUnassignedShard(allocation, routingNodes, routingNode, shardRouting, unassignedInfoToUpdate, EmptyStoreRecoverySource.INSTANCE);
    return new RerouteExplanation(this, allocation.decision(Decision.YES, name() + " (allocation command)", "ignore deciders"));
}

Example 35 with RoutingNodes

use of org.opensearch.cluster.routing.RoutingNodes in project OpenSearch by opensearch-project.

the class AllocateStalePrimaryAllocationCommand method execute.

@Override
public RerouteExplanation execute(RoutingAllocation allocation, boolean explain) {
    final DiscoveryNode discoNode;
    try {
        discoNode = allocation.nodes().resolveNode(node);
    } catch (IllegalArgumentException e) {
        return explainOrThrowRejectedCommand(explain, allocation, e);
    }
    final RoutingNodes routingNodes = allocation.routingNodes();
    RoutingNode routingNode = routingNodes.node(discoNode.getId());
    if (routingNode == null) {
        return explainOrThrowMissingRoutingNode(allocation, explain, discoNode);
    }
    try {
        allocation.routingTable().shardRoutingTable(index, shardId).primaryShard();
    } catch (IndexNotFoundException | ShardNotFoundException e) {
        return explainOrThrowRejectedCommand(explain, allocation, e);
    }
    ShardRouting shardRouting = null;
    for (ShardRouting shard : allocation.routingNodes().unassigned()) {
        if (shard.getIndexName().equals(index) && shard.getId() == shardId && shard.primary()) {
            shardRouting = shard;
            break;
        }
    }
    if (shardRouting == null) {
        return explainOrThrowRejectedCommand(explain, allocation, "primary [" + index + "][" + shardId + "] is already assigned");
    }
    if (acceptDataLoss == false) {
        String dataLossWarning = "allocating an empty primary for [" + index + "][" + shardId + "] can result in data loss. Please " + "confirm by setting the accept_data_loss parameter to true";
        return explainOrThrowRejectedCommand(explain, allocation, dataLossWarning);
    }
    if (shardRouting.recoverySource().getType() != RecoverySource.Type.EXISTING_STORE) {
        return explainOrThrowRejectedCommand(explain, allocation, "trying to allocate an existing primary shard [" + index + "][" + shardId + "], while no such shard has ever been active");
    }
    initializeUnassignedShard(allocation, routingNodes, routingNode, shardRouting, null, RecoverySource.ExistingStoreRecoverySource.FORCE_STALE_PRIMARY_INSTANCE);
    return new RerouteExplanation(this, allocation.decision(Decision.YES, name() + " (allocation command)", "ignore deciders"));
}