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Example 1 with INITIALIZING

use of org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING in project elasticsearch by elastic.

the class BalanceConfigurationTests method testNoRebalanceOnPrimaryOverload.

public void testNoRebalanceOnPrimaryOverload() {
    Settings.Builder settings = Settings.builder();
    AllocationService strategy = new AllocationService(settings.build(), 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);
    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.elasticsearch.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 NoopGatewayAllocator());
    logger.info("use the new allocator and check if it moves shards");
    routingNodes = clusterState.getRoutingNodes();
    routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).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 = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).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));
        }
    }
}
Also used : MetaData(org.elasticsearch.cluster.metadata.MetaData) ShardRouting(org.elasticsearch.cluster.routing.ShardRouting) ESAllocationTestCase(org.elasticsearch.cluster.ESAllocationTestCase) INITIALIZING(org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING) ShardRoutingState(org.elasticsearch.cluster.routing.ShardRoutingState) STARTED(org.elasticsearch.cluster.routing.ShardRoutingState.STARTED) ClusterState(org.elasticsearch.cluster.ClusterState) DiscoveryNode(org.elasticsearch.cluster.node.DiscoveryNode) Settings(org.elasticsearch.common.settings.Settings) EmptyClusterInfoService(org.elasticsearch.cluster.EmptyClusterInfoService) RoutingNodes(org.elasticsearch.cluster.routing.RoutingNodes) ClusterRebalanceAllocationDecider(org.elasticsearch.cluster.routing.allocation.decider.ClusterRebalanceAllocationDecider) Loggers(org.elasticsearch.common.logging.Loggers) ArrayUtil(org.apache.lucene.util.ArrayUtil) DiscoveryNodes(org.elasticsearch.cluster.node.DiscoveryNodes) BalancedShardsAllocator(org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator) RoutingNode(org.elasticsearch.cluster.routing.RoutingNode) ShardsAllocator(org.elasticsearch.cluster.routing.allocation.allocator.ShardsAllocator) TestGatewayAllocator(org.elasticsearch.test.gateway.TestGatewayAllocator) Matchers(org.hamcrest.Matchers) ObjectCursor(com.carrotsearch.hppc.cursors.ObjectCursor) ClusterSettings(org.elasticsearch.common.settings.ClusterSettings) List(java.util.List) Logger(org.apache.logging.log4j.Logger) Version(org.elasticsearch.Version) IndexMetaData(org.elasticsearch.cluster.metadata.IndexMetaData) RoutingTable(org.elasticsearch.cluster.routing.RoutingTable) GatewayAllocator(org.elasticsearch.gateway.GatewayAllocator) DiscoveryNode(org.elasticsearch.cluster.node.DiscoveryNode) ClusterSettings(org.elasticsearch.common.settings.ClusterSettings) RoutingNodes(org.elasticsearch.cluster.routing.RoutingNodes) BalancedShardsAllocator(org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator) ShardsAllocator(org.elasticsearch.cluster.routing.allocation.allocator.ShardsAllocator) RoutingNode(org.elasticsearch.cluster.routing.RoutingNode) MetaData(org.elasticsearch.cluster.metadata.MetaData) IndexMetaData(org.elasticsearch.cluster.metadata.IndexMetaData) Settings(org.elasticsearch.common.settings.Settings) ClusterSettings(org.elasticsearch.common.settings.ClusterSettings) DiscoveryNodes(org.elasticsearch.cluster.node.DiscoveryNodes) TestGatewayAllocator(org.elasticsearch.test.gateway.TestGatewayAllocator) ClusterState(org.elasticsearch.cluster.ClusterState) IndexMetaData(org.elasticsearch.cluster.metadata.IndexMetaData) RoutingTable(org.elasticsearch.cluster.routing.RoutingTable) ShardRouting(org.elasticsearch.cluster.routing.ShardRouting)

Aggregations

ObjectCursor (com.carrotsearch.hppc.cursors.ObjectCursor)1 List (java.util.List)1 Logger (org.apache.logging.log4j.Logger)1 ArrayUtil (org.apache.lucene.util.ArrayUtil)1 Version (org.elasticsearch.Version)1 ClusterState (org.elasticsearch.cluster.ClusterState)1 ESAllocationTestCase (org.elasticsearch.cluster.ESAllocationTestCase)1 EmptyClusterInfoService (org.elasticsearch.cluster.EmptyClusterInfoService)1 IndexMetaData (org.elasticsearch.cluster.metadata.IndexMetaData)1 MetaData (org.elasticsearch.cluster.metadata.MetaData)1 DiscoveryNode (org.elasticsearch.cluster.node.DiscoveryNode)1 DiscoveryNodes (org.elasticsearch.cluster.node.DiscoveryNodes)1 RoutingNode (org.elasticsearch.cluster.routing.RoutingNode)1 RoutingNodes (org.elasticsearch.cluster.routing.RoutingNodes)1 RoutingTable (org.elasticsearch.cluster.routing.RoutingTable)1 ShardRouting (org.elasticsearch.cluster.routing.ShardRouting)1 ShardRoutingState (org.elasticsearch.cluster.routing.ShardRoutingState)1 INITIALIZING (org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING)1 STARTED (org.elasticsearch.cluster.routing.ShardRoutingState.STARTED)1 BalancedShardsAllocator (org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator)1