Examples with STARTED org.opensearch.cluster.routing.ShardRoutingState.STARTED used on opensource projects

Example 1 with STARTED

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

the class BalanceConfigurationTests method assertReplicaBalance.

private void assertReplicaBalance(RoutingNodes nodes, int numberOfNodes, int numberOfIndices, int numberOfReplicas, int numberOfShards, float threshold) {
    final int unassigned = nodes.unassigned().size();
    if (unassigned > 0) {
        // Ensure that if there any unassigned shards, all of their replicas are unassigned as well
        // (i.e. unassigned count is always [replicas] + 1 for each shard unassigned shardId)
        nodes.shardsWithState(UNASSIGNED).stream().collect(Collectors.toMap(ShardRouting::shardId, s -> 1, (a, b) -> a + b)).values().forEach(count -> assertEquals(numberOfReplicas + 1, count.longValue()));
    }
    assertEquals(numberOfNodes, nodes.size());
    final int numShards = numberOfIndices * numberOfShards * (numberOfReplicas + 1) - unassigned;
    final float avgNumShards = (float) (numShards) / (float) (numberOfNodes);
    final int minAvgNumberOfShards = Math.round(Math.round(Math.floor(avgNumShards - threshold)));
    final int maxAvgNumberOfShards = Math.round(Math.round(Math.ceil(avgNumShards + threshold)));
    for (RoutingNode node : nodes) {
        assertThat(node.shardsWithState(STARTED).size(), Matchers.greaterThanOrEqualTo(minAvgNumberOfShards));
        assertThat(node.shardsWithState(STARTED).size(), Matchers.lessThanOrEqualTo(maxAvgNumberOfShards));
    }
}

Example 2 with STARTED

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

the class BalanceConfigurationTests method testNoRebalanceOnPrimaryOverload.

public void testNoRebalanceOnPrimaryOverload() {
    Settings.Builder settings = Settings.builder();
    AllocationService strategy = new AllocationService(randomAllocationDeciders(settings.build(), new ClusterSettings(Settings.Builder.EMPTY_SETTINGS, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS), random()), new TestGatewayAllocator(), new ShardsAllocator() {

        /*
                 *  // this allocator tries to rebuild this scenario where a rebalance is
                 *  // triggered solely by the primary overload on node [1] where a shard
                 *  // is rebalanced to node 0
                    routing_nodes:
                    -----node_id[0][V]
                    --------[test][0], node[0], [R], s[STARTED]
                    --------[test][4], node[0], [R], s[STARTED]
                    -----node_id[1][V]
                    --------[test][0], node[1], [P], s[STARTED]
                    --------[test][1], node[1], [P], s[STARTED]
                    --------[test][3], node[1], [R], s[STARTED]
                    -----node_id[2][V]
                    --------[test][1], node[2], [R], s[STARTED]
                    --------[test][2], node[2], [R], s[STARTED]
                    --------[test][4], node[2], [P], s[STARTED]
                    -----node_id[3][V]
                    --------[test][2], node[3], [P], s[STARTED]
                    --------[test][3], node[3], [P], s[STARTED]
                    ---- unassigned
                */
        public void allocate(RoutingAllocation allocation) {
            RoutingNodes.UnassignedShards unassigned = allocation.routingNodes().unassigned();
            ShardRouting[] drain = unassigned.drain();
            // we have to allocate primaries first
            ArrayUtil.timSort(drain, (a, b) -> {
                return a.primary() ? -1 : 1;
            });
            for (ShardRouting sr : drain) {
                switch(sr.id()) {
                    case 0:
                        if (sr.primary()) {
                            allocation.routingNodes().initializeShard(sr, "node1", null, -1, allocation.changes());
                        } else {
                            allocation.routingNodes().initializeShard(sr, "node0", null, -1, allocation.changes());
                        }
                        break;
                    case 1:
                        if (sr.primary()) {
                            allocation.routingNodes().initializeShard(sr, "node1", null, -1, allocation.changes());
                        } else {
                            allocation.routingNodes().initializeShard(sr, "node2", null, -1, allocation.changes());
                        }
                        break;
                    case 2:
                        if (sr.primary()) {
                            allocation.routingNodes().initializeShard(sr, "node3", null, -1, allocation.changes());
                        } else {
                            allocation.routingNodes().initializeShard(sr, "node2", null, -1, allocation.changes());
                        }
                        break;
                    case 3:
                        if (sr.primary()) {
                            allocation.routingNodes().initializeShard(sr, "node3", null, -1, allocation.changes());
                        } else {
                            allocation.routingNodes().initializeShard(sr, "node1", null, -1, allocation.changes());
                        }
                        break;
                    case 4:
                        if (sr.primary()) {
                            allocation.routingNodes().initializeShard(sr, "node2", null, -1, allocation.changes());
                        } else {
                            allocation.routingNodes().initializeShard(sr, "node0", null, -1, allocation.changes());
                        }
                        break;
                }
            }
        }

        @Override
        public ShardAllocationDecision decideShardAllocation(ShardRouting shard, RoutingAllocation allocation) {
            throw new UnsupportedOperationException("explain not supported");
        }
    }, EmptyClusterInfoService.INSTANCE, EmptySnapshotsInfoService.INSTANCE);
    Metadata.Builder metadataBuilder = Metadata.builder();
    RoutingTable.Builder routingTableBuilder = RoutingTable.builder();
    IndexMetadata.Builder indexMeta = IndexMetadata.builder("test").settings(settings(Version.CURRENT)).numberOfShards(5).numberOfReplicas(1);
    metadataBuilder = metadataBuilder.put(indexMeta);
    Metadata metadata = metadataBuilder.build();
    for (ObjectCursor<IndexMetadata> cursor : metadata.indices().values()) {
        routingTableBuilder.addAsNew(cursor.value);
    }
    RoutingTable routingTable = routingTableBuilder.build();
    DiscoveryNodes.Builder nodes = DiscoveryNodes.builder();
    for (int i = 0; i < 4; i++) {
        DiscoveryNode node = newNode("node" + i);
        nodes.add(node);
    }
    ClusterState clusterState = ClusterState.builder(org.opensearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).nodes(nodes).metadata(metadata).routingTable(routingTable).build();
    routingTable = strategy.reroute(clusterState, "reroute").routingTable();
    clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
    RoutingNodes routingNodes = clusterState.getRoutingNodes();
    for (RoutingNode routingNode : routingNodes) {
        for (ShardRouting shardRouting : routingNode) {
            assertThat(shardRouting.state(), Matchers.equalTo(ShardRoutingState.INITIALIZING));
        }
    }
    strategy = createAllocationService(settings.build(), new TestGatewayAllocator());
    logger.info("use the new allocator and check if it moves shards");
    routingTable = startInitializingShardsAndReroute(strategy, clusterState).routingTable();
    clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
    routingNodes = clusterState.getRoutingNodes();
    for (RoutingNode routingNode : routingNodes) {
        for (ShardRouting shardRouting : routingNode) {
            assertThat(shardRouting.state(), Matchers.equalTo(ShardRoutingState.STARTED));
        }
    }
    logger.info("start the replica shards");
    routingTable = startInitializingShardsAndReroute(strategy, clusterState).routingTable();
    clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
    routingNodes = clusterState.getRoutingNodes();
    for (RoutingNode routingNode : routingNodes) {
        for (ShardRouting shardRouting : routingNode) {
            assertThat(shardRouting.state(), Matchers.equalTo(ShardRoutingState.STARTED));
        }
    }
    logger.info("rebalancing");
    routingTable = strategy.reroute(clusterState, "reroute").routingTable();
    clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
    routingNodes = clusterState.getRoutingNodes();
    for (RoutingNode routingNode : routingNodes) {
        for (ShardRouting shardRouting : routingNode) {
            assertThat(shardRouting.state(), Matchers.equalTo(ShardRoutingState.STARTED));
        }
    }
}

Example 3 with STARTED

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

the class DiskThresholdDeciderTests method testDiskThresholdWithSnapshotShardSizes.

public void testDiskThresholdWithSnapshotShardSizes() {
    final long shardSizeInBytes = randomBoolean() ? 10L : 50L;
    logger.info("--> using shard size [{}]", shardSizeInBytes);
    final 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(), "90%").put(DiskThresholdSettings.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "95%").build();
    final ImmutableOpenMap.Builder<String, DiskUsage> usagesBuilder = ImmutableOpenMap.builder();
    // 79% used
    usagesBuilder.put("node1", new DiskUsage("node1", "n1", "/dev/null", 100, 21));
    // 99% used
    usagesBuilder.put("node2", new DiskUsage("node2", "n2", "/dev/null", 100, 1));
    final ImmutableOpenMap<String, DiskUsage> usages = usagesBuilder.build();
    final ClusterInfoService clusterInfoService = () -> new DevNullClusterInfo(usages, usages, ImmutableOpenMap.of());
    final AllocationDeciders deciders = new AllocationDeciders(new HashSet<>(Arrays.asList(new RestoreInProgressAllocationDecider(), new SameShardAllocationDecider(Settings.EMPTY, new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS)), makeDecider(diskSettings))));
    final Snapshot snapshot = new Snapshot("_repository", new SnapshotId("_snapshot_name", UUIDs.randomBase64UUID(random())));
    final IndexId indexId = new IndexId("_indexid_name", UUIDs.randomBase64UUID(random()));
    final ShardId shardId = new ShardId(new Index("test", IndexMetadata.INDEX_UUID_NA_VALUE), 0);
    final Metadata metadata = Metadata.builder().put(IndexMetadata.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(0).putInSyncAllocationIds(0, singleton(AllocationId.newInitializing().getId()))).build();
    final RoutingTable routingTable = RoutingTable.builder().addAsNewRestore(metadata.index("test"), new RecoverySource.SnapshotRecoverySource("_restore_uuid", snapshot, Version.CURRENT, indexId), new IntHashSet()).build();
    final ImmutableOpenMap.Builder<ShardId, RestoreInProgress.ShardRestoreStatus> shards = ImmutableOpenMap.builder();
    shards.put(shardId, new RestoreInProgress.ShardRestoreStatus("node1"));
    final RestoreInProgress.Builder restores = new RestoreInProgress.Builder().add(new RestoreInProgress.Entry("_restore_uuid", snapshot, RestoreInProgress.State.INIT, singletonList("test"), shards.build()));
    ClusterState clusterState = ClusterState.builder(new ClusterName(getTestName())).metadata(metadata).routingTable(routingTable).putCustom(RestoreInProgress.TYPE, restores.build()).nodes(// node2 is added because DiskThresholdDecider
    DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).stream().map(ShardRouting::unassignedInfo).allMatch(unassignedInfo -> Reason.NEW_INDEX_RESTORED.equals(unassignedInfo.getReason())), is(true));
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).stream().map(ShardRouting::unassignedInfo).allMatch(unassignedInfo -> AllocationStatus.NO_ATTEMPT.equals(unassignedInfo.getLastAllocationStatus())), is(true));
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).size(), equalTo(1));
    final AtomicReference<SnapshotShardSizeInfo> snapshotShardSizeInfoRef = new AtomicReference<>(SnapshotShardSizeInfo.EMPTY);
    final AllocationService strategy = new AllocationService(deciders, new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), clusterInfoService, snapshotShardSizeInfoRef::get);
    // reroute triggers snapshot shard size fetching
    clusterState = strategy.reroute(clusterState, "reroute");
    logShardStates(clusterState);
    // shard cannot be assigned yet as the snapshot shard size is unknown
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).stream().map(ShardRouting::unassignedInfo).allMatch(unassignedInfo -> AllocationStatus.FETCHING_SHARD_DATA.equals(unassignedInfo.getLastAllocationStatus())), is(true));
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).size(), equalTo(1));
    final SnapshotShard snapshotShard = new SnapshotShard(snapshot, indexId, shardId);
    final ImmutableOpenMap.Builder<SnapshotShard, Long> snapshotShardSizes = ImmutableOpenMap.builder();
    final boolean shouldAllocate;
    if (randomBoolean()) {
        logger.info("--> simulating snapshot shards size retrieval success");
        snapshotShardSizes.put(snapshotShard, shardSizeInBytes);
        logger.info("--> shard allocation depends on its size");
        shouldAllocate = shardSizeInBytes < usages.get("node1").getFreeBytes();
    } else {
        logger.info("--> simulating snapshot shards size retrieval failure");
        snapshotShardSizes.put(snapshotShard, ShardRouting.UNAVAILABLE_EXPECTED_SHARD_SIZE);
        logger.info("--> shard is always allocated when its size could not be retrieved");
        shouldAllocate = true;
    }
    snapshotShardSizeInfoRef.set(new SnapshotShardSizeInfo(snapshotShardSizes.build()));
    // reroute uses the previous snapshot shard size
    clusterState = startInitializingShardsAndReroute(strategy, clusterState);
    logShardStates(clusterState);
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).size(), equalTo(shouldAllocate ? 0 : 1));
    assertThat(clusterState.getRoutingNodes().shardsWithState("test", INITIALIZING, STARTED).size(), equalTo(shouldAllocate ? 1 : 0));
}