Package org.elasticsearch.cluster.routing.allocation.command

Examples of org.elasticsearch.cluster.routing.allocation.command.MoveAllocationCommand

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        for (int i = 0; i < numberOfRelocations; i++) {
            String fromNode = (i % 2 == 0) ? node1 : node2;
            String toNode = node1.equals(fromNode) ? node2 : node1;
            logger.trace("--> START relocate the shard from {} to {}", fromNode, toNode);
            cluster().client(node1).admin().cluster().prepareReroute()
                    .add(new MoveAllocationCommand(new ShardId(BlobIndices.fullIndexName("test"), 0), fromNode, toNode))
                    .execute().actionGet();
            ClusterHealthResponse clusterHealthResponse = cluster().client(node1).admin().cluster()
                    .prepareHealth()
                    .setWaitForEvents(Priority.LANGUID)
                    .setWaitForRelocatingShards(0)
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                .put(SETTING_NUMBER_OF_SHARDS, between(cluster().numDataNodes(), DEFAULT_MAX_NUM_SHARDS))
                .put(SETTING_NUMBER_OF_REPLICAS, 0)
        ));
        ensureGreen();

        MoveAllocationCommand moveAllocationCommand = getAllocationCommand();

        assertAcked(client().admin().cluster().prepareReroute().add(moveAllocationCommand));

        for (Client client : clients()) {
            ClusterState clusterState = getLocalClusterState(client);
            for (MutableShardRouting mutableShardRouting : clusterState.routingNodes().routingNodeIter(moveAllocationCommand.fromNode())) {
                //if the shard that we wanted to move is still on the same node, it must be relocating
                if (mutableShardRouting.shardId().equals(moveAllocationCommand.shardId())) {
                    assertThat(mutableShardRouting.relocating(), equalTo(true));
                }

            }

            boolean found = false;
            for (MutableShardRouting mutableShardRouting : clusterState.routingNodes().routingNodeIter(moveAllocationCommand.toNode())) {
                if (mutableShardRouting.shardId().equals(moveAllocationCommand.shardId())) {
                    assertThat(mutableShardRouting.state(), anyOf(equalTo(ShardRoutingState.INITIALIZING), equalTo(ShardRoutingState.STARTED)));
                    found = true;
                    break;
                }
            }
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        String origPrimaryNodeId = clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId();
        String origReplicaNodeId = clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId();

        logger.info("--> moving primary shard to node3");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(
                new MoveAllocationCommand(clusterState.routingTable().index("test").shard(0).primaryShard().shardId(), clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), "node3"))
        );
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node(origPrimaryNodeId).get(0).state(), equalTo(RELOCATING));
        assertThat(clusterState.routingNodes().node("node3").get(0).state(), equalTo(INITIALIZING));
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        String origPrimaryNodeId = clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId();
        String origReplicaNodeId = clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId();

        logger.info("--> moving primary shard to node3");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(
                new MoveAllocationCommand(clusterState.routingTable().index("test").shard(0).primaryShard().shardId(), clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), "node3"))
        );
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node(origPrimaryNodeId).get(0).state(), equalTo(RELOCATING));
        assertThat(clusterState.routingNodes().node("node3").get(0).state(), equalTo(INITIALIZING));
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        String origPrimaryNodeId = clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId();
        String origReplicaNodeId = clusterState.routingTable().index("test").shard(0).replicaShards().get(0).currentNodeId();

        logger.info("--> moving primary shard to node3");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(
                        new MoveAllocationCommand(clusterState.routingTable().index("test").shard(0).primaryShard().shardId(), clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), "node3"))
        );
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node(origPrimaryNodeId).get(0).state(), equalTo(RELOCATING));
        assertThat(clusterState.routingNodes().node("node3").get(0).state(), equalTo(INITIALIZING));

        logger.info("--> fail primary shard recovering instance on node3 being initialized");
        rerouteResult = allocation.applyFailedShard(clusterState, new ImmutableShardRouting(clusterState.routingNodes().node("node3").get(0)));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();

        assertThat(clusterState.routingNodes().node(origPrimaryNodeId).get(0).state(), equalTo(STARTED));
        assertThat(clusterState.routingNodes().node("node3").size(), equalTo(0));

        logger.info("--> moving primary shard to node3");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(
                        new MoveAllocationCommand(clusterState.routingTable().index("test").shard(0).primaryShard().shardId(), clusterState.routingTable().index("test").shard(0).primaryShard().currentNodeId(), "node3"))
        );
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node(origPrimaryNodeId).get(0).state(), equalTo(RELOCATING));
        assertThat(clusterState.routingNodes().node("node3").get(0).state(), equalTo(INITIALIZING));
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        if ("node1".equals(existingNodeId)) {
            toNodeId = "node2";
        } else {
            toNodeId = "node1";
        }
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new MoveAllocationCommand(new ShardId("test", 0), existingNodeId, toNodeId)));
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node(existingNodeId).get(0).state(), equalTo(ShardRoutingState.RELOCATING));
        assertThat(clusterState.routingNodes().node(toNodeId).get(0).state(), equalTo(ShardRoutingState.INITIALIZING));
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        assertThat(clusterState.routingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node2").size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node2").shardsWithState(STARTED).size(), equalTo(1));

        logger.info("--> move the replica shard");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new MoveAllocationCommand(new ShardId("test", 0), "node2", "node3")));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node2").size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node2").shardsWithState(RELOCATING).size(), equalTo(1));
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    @Test
    public void serialization() throws Exception {
        AllocationCommands commands = new AllocationCommands(
                new AllocateAllocationCommand(new ShardId("test", 1), "node1", true),
                new MoveAllocationCommand(new ShardId("test", 3), "node2", "node3"),
                new CancelAllocationCommand(new ShardId("test", 4), "node5", true)
        );
        BytesStreamOutput bytes = new BytesStreamOutput();
        AllocationCommands.writeTo(commands, bytes);
        AllocationCommands sCommands = AllocationCommands.readFrom(new BytesStreamInput(bytes.bytes()));
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                .setSettings(settingsBuilder()
                        .put(SETTING_NUMBER_OF_SHARDS, between(cluster().numDataNodes(), DEFAULT_MAX_NUM_SHARDS))
                        .put(SETTING_NUMBER_OF_REPLICAS, 0)).get();
        ensureGreen();

        MoveAllocationCommand moveAllocationCommand = getAllocationCommand();

        ClusterRerouteResponse clusterRerouteResponse = client().admin().cluster().prepareReroute().setTimeout("0s").add(moveAllocationCommand).get();
        assertThat(clusterRerouteResponse.isAcknowledged(), equalTo(false));
    }
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                .setSettings(settingsBuilder()
                        .put(SETTING_NUMBER_OF_SHARDS, between(cluster().numDataNodes(), DEFAULT_MAX_NUM_SHARDS))
                        .put(SETTING_NUMBER_OF_REPLICAS, 0)).get();
        ensureGreen();

        MoveAllocationCommand moveAllocationCommand = getAllocationCommand();

        assertAcked(client().admin().cluster().prepareReroute().setDryRun(true).add(moveAllocationCommand));

        //testing only on master with the latest cluster state as we didn't make any change thus we cannot guarantee that
        //all nodes hold the same cluster state version. We only know there was no need to change anything, thus no need for ack on this update.
        ClusterStateResponse clusterStateResponse = client().admin().cluster().prepareState().get();
        boolean found = false;
        for (MutableShardRouting mutableShardRouting : clusterStateResponse.getState().routingNodes().routingNodeIter(moveAllocationCommand.fromNode())) {
            //the shard that we wanted to move is still on the same node, as we had dryRun flag
            if (mutableShardRouting.shardId().equals(moveAllocationCommand.shardId())) {
                assertThat(mutableShardRouting.started(), equalTo(true));
                found = true;
                break;
            }
        }
        assertThat(found, equalTo(true));

        for (MutableShardRouting mutableShardRouting : clusterStateResponse.getState().routingNodes().routingNodeIter(moveAllocationCommand.toNode())) {
            if (mutableShardRouting.shardId().equals(moveAllocationCommand.shardId())) {
                fail("shard [" + mutableShardRouting + "] shouldn't be on node [" + moveAllocationCommand.toString() + "]");
            }
        }
    }
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Related Classes of org.elasticsearch.cluster.routing.allocation.command.MoveAllocationCommand

  • io.crate.integrationtests.RecoveryTests
  • org.elasticsearch.cluster.ack.AckTests
  • org.elasticsearch.cluster.allocation.ClusterRerouteTests
  • org.elasticsearch.cluster.node.DiscoveryNode
  • org.elasticsearch.cluster.routing.allocation.AllocationCommandsTests
  • org.elasticsearch.cluster.routing.allocation.DeadNodesAllocationTests
  • org.elasticsearch.cluster.routing.allocation.decider.Decision
  • org.elasticsearch.cluster.routing.allocation.decider.DiskThresholdDeciderTests
  • org.elasticsearch.cluster.routing.allocation.FailedShardsRoutingTests
  • org.elasticsearch.cluster.routing.allocation.RerouteExplanation
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