Package org.elasticsearch.cluster.routing.allocation

Examples of org.elasticsearch.cluster.routing.allocation.AllocationService.reroute()

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        logger.info("--> adding node1");
        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
                .put(newNode("node1"))
                .put(newNode("node3")) // node3 is added because DiskThresholdDecider automatically ignore single-node clusters
        ).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();

        // Shard can be allocated to node1, even though it only has 25% free,
        // because it's a primary that's never been allocated before
        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
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        logger.info("--> adding two nodes");
        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
                        .put(newNode("node1"))
                        .put(newNode("node2"))
        ).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
        logShardStates(clusterState);

        // shards should be initializing
        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(4));
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        ).build();

        AllocationCommand relocate1 = new MoveAllocationCommand(new ShardId("test", 0), "node2", "node3");
        AllocationCommands cmds = new AllocationCommands(relocate1);

        routingTable = strategy.reroute(clusterState, cmds).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
        logShardStates(clusterState);

        AllocationCommand relocate2 = new MoveAllocationCommand(new ShardId("test2", 0), "node2", "node3");
        cmds = new AllocationCommands(relocate2);
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        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).routingTable();
            fail("should not have been able to reroute the shard");
        } catch (ElasticsearchIllegalArgumentException e) {
            assertThat("can't allocated because there isn't enough room: " + e.getMessage(),
                    e.getMessage().contains("less than required [30.0%] free disk on node, free: [26.0%]"), equalTo(true));
        }
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        logger.info("--> adding two nodes");
        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
                .put(newNode("node1"))
                .put(newNode("node2"))
        ).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
        logShardStates(clusterState);

        // Primary shard should be initializing, replica should not
        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
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        logger.info("--> adding node3");

        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
                .put(newNode("node3"))
        ).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();

        logShardStates(clusterState);
        // Assert that the replica is initialized now that node3 is available with enough space
        assertThat(clusterState.routingNodes().shardsWithState(ShardRoutingState.STARTED).size(), equalTo(1));
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                .put("cluster.routing.allocation.concurrent_recoveries", 10)
                .put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE, "always")
                .put("cluster.routing.allocation.cluster_concurrent_rebalance", -1)
                .build(), deciders, new ShardsAllocators(), cis);

        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
        logShardStates(clusterState);

        // Shards remain started
        assertThat(clusterState.routingNodes().shardsWithState(STARTED).size(), equalTo(2));
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                .put("cluster.routing.allocation.concurrent_recoveries", 10)
                .put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE, "always")
                .put("cluster.routing.allocation.cluster_concurrent_rebalance", -1)
                .build(), deciders, new ShardsAllocators(), cis);

        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();

        logShardStates(clusterState);
        // Shards remain started
        assertThat(clusterState.routingNodes().shardsWithState(STARTED).size(), equalTo(2));
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        logger.info("--> adding node4");

        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
                .put(newNode("node4"))
        ).build();
        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();

        logShardStates(clusterState);
        // Shards remain started
        assertThat(clusterState.routingNodes().shardsWithState(STARTED).size(), equalTo(1));
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        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
                        .put(newNode("node1"))
                        .put(newNode("node2"))
        ).build();

        routingTable = strategy.reroute(clusterState).routingTable();
        clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
        logShardStates(clusterState);

        // Primary should initialize, even though both nodes are over the limit initialize
        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
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