Examples with CancelAllocationCommand org.elasticsearch.cluster.routing.allocation.command.CancelAllocationCommand used on opensource projects

Example 1 with CancelAllocationCommand

use of org.elasticsearch.cluster.routing.allocation.command.CancelAllocationCommand in project elasticsearch by elastic.

the class AllocationCommandsTests method testCancelCommand.

public void testCancelCommand() {
    AllocationService allocation = createAllocationService(Settings.builder().put(EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING.getKey(), "none").put(EnableAllocationDecider.CLUSTER_ROUTING_REBALANCE_ENABLE_SETTING.getKey(), "none").build());
    logger.info("--> building initial routing table");
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1)).build();
    RoutingTable routingTable = RoutingTable.builder().addAsNew(metaData.index("test")).build();
    ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(routingTable).build();
    logger.info("--> adding 3 nodes");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3"))).build();
    clusterState = allocation.reroute(clusterState, "reroute");
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(0));
    logger.info("--> allocating empty primary shard with accept_data_loss flag set to true");
    ClusterState newState = allocation.reroute(clusterState, new AllocationCommands(new AllocateEmptyPrimaryAllocationCommand("test", 0, "node1", true)), false, false).getClusterState();
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(INITIALIZING).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
    logger.info("--> cancel primary allocation, make sure it fails...");
    try {
        allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node1", false)), false, false);
        fail();
    } catch (IllegalArgumentException e) {
    }
    logger.info("--> start the primary shard");
    clusterState = allocation.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
    logger.info("--> cancel primary allocation, make sure it fails...");
    try {
        allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node1", false)), false, false);
        fail();
    } catch (IllegalArgumentException e) {
    }
    logger.info("--> allocate the replica shard on on the second node");
    newState = allocation.reroute(clusterState, new AllocationCommands(new AllocateReplicaAllocationCommand("test", 0, "node2")), false, false).getClusterState();
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(INITIALIZING).size(), equalTo(1));
    logger.info("--> cancel the relocation allocation");
    newState = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node2", false)), false, false).getClusterState();
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(0));
    logger.info("--> allocate the replica shard on on the second node");
    newState = allocation.reroute(clusterState, new AllocationCommands(new AllocateReplicaAllocationCommand("test", 0, "node2")), false, false).getClusterState();
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(INITIALIZING).size(), equalTo(1));
    logger.info("--> cancel the primary being replicated, make sure it fails");
    try {
        allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node1", false)), false, false);
        fail();
    } catch (IllegalArgumentException e) {
    }
    logger.info("--> start the replica shard");
    clusterState = allocation.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(STARTED).size(), equalTo(1));
    logger.info("--> cancel allocation of the replica shard");
    newState = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node2", false)), false, false).getClusterState();
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(0));
    logger.info("--> allocate the replica shard on on the second node");
    newState = allocation.reroute(clusterState, new AllocationCommands(new AllocateReplicaAllocationCommand("test", 0, "node2")), false, false).getClusterState();
    assertThat(newState, not(equalTo(clusterState)));
    clusterState = newState;
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(INITIALIZING).size(), equalTo(1));
    logger.info("--> start the replica shard");
    clusterState = allocation.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(STARTED).size(), equalTo(1));
    logger.info("--> move the replica shard");
    clusterState = allocation.reroute(clusterState, new AllocationCommands(new MoveAllocationCommand("test", 0, "node2", "node3")), false, false).getClusterState();
    assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(RELOCATING).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().node("node3").shardsWithState(INITIALIZING).size(), equalTo(1));
    if (randomBoolean()) {
        logger.info("--> cancel the primary allocation (with allow_primary set to true)");
        newState = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node1", true)), false, false).getClusterState();
        assertThat(newState, not(equalTo(clusterState)));
        clusterState = newState;
        assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(0));
        assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(STARTED).iterator().next().primary(), equalTo(true));
        assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(0));
    } else {
        logger.info("--> cancel the move of the replica shard");
        clusterState = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node3", false)), false, false).getClusterState();
        assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(STARTED).size(), equalTo(1));
        logger.info("--> move the replica shard again");
        clusterState = allocation.reroute(clusterState, new AllocationCommands(new MoveAllocationCommand("test", 0, "node2", "node3")), false, false).getClusterState();
        assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node2").shardsWithState(RELOCATING).size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node3").shardsWithState(INITIALIZING).size(), equalTo(1));
        logger.info("--> cancel the source replica shard");
        clusterState = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node2", false)), false, false).getClusterState();
        assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
        assertThat(clusterState.getRoutingNodes().node("node3").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node3").shardsWithState(INITIALIZING).size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node3").shardsWithState(INITIALIZING).get(0).relocatingNodeId(), nullValue());
        logger.info("--> start the former target replica shard");
        clusterState = allocation.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
        assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node1").shardsWithState(STARTED).size(), equalTo(1));
        assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
        assertThat(clusterState.getRoutingNodes().node("node3").shardsWithState(STARTED).size(), equalTo(1));
        logger.info("--> cancel the primary allocation (with allow_primary set to true)");
        newState = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand("test", 0, "node1", true)), false, false).getClusterState();
        assertThat(newState, not(equalTo(clusterState)));
        clusterState = newState;
        assertThat(clusterState.getRoutingNodes().node("node3").shardsWithState(STARTED).iterator().next().primary(), equalTo(true));
        assertThat(clusterState.getRoutingNodes().node("node1").size(), equalTo(0));
        assertThat(clusterState.getRoutingNodes().node("node2").size(), equalTo(0));
    }
}

Example 2 with CancelAllocationCommand

use of org.elasticsearch.cluster.routing.allocation.command.CancelAllocationCommand in project elasticsearch by elastic.

the class AwarenessAllocationTests method testUnassignedShardsWithUnbalancedZones.

public void testUnassignedShardsWithUnbalancedZones() {
    AllocationService strategy = createAllocationService(Settings.builder().put("cluster.routing.allocation.node_concurrent_recoveries", 10).put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always").put("cluster.routing.allocation.awareness.attributes", "zone").build());
    logger.info("Building initial routing table for 'testUnassignedShardsWithUnbalancedZones'");
    MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(4)).build();
    RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test")).build();
    ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
    logger.info("--> adding 5 nodes in different zones and do rerouting");
    clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("A-0", singletonMap("zone", "a"))).add(newNode("A-1", singletonMap("zone", "a"))).add(newNode("A-2", singletonMap("zone", "a"))).add(newNode("A-3", singletonMap("zone", "a"))).add(newNode("A-4", singletonMap("zone", "a"))).add(newNode("B-0", singletonMap("zone", "b")))).build();
    clusterState = strategy.reroute(clusterState, "reroute");
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(0));
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(1));
    logger.info("--> start the shard (primary)");
    clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(1));
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(3));
    // Unassigned shard is expected.
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).size(), equalTo(1));
    // Cancel all initializing shards and move started primary to another node.
    AllocationCommands commands = new AllocationCommands();
    String primaryNode = null;
    for (ShardRouting routing : clusterState.routingTable().allShards()) {
        if (routing.primary()) {
            primaryNode = routing.currentNodeId();
        } else if (routing.initializing()) {
            commands.add(new CancelAllocationCommand(routing.shardId().getIndexName(), routing.id(), routing.currentNodeId(), false));
        }
    }
    commands.add(new MoveAllocationCommand("test", 0, primaryNode, "A-4"));
    clusterState = strategy.reroute(clusterState, commands, false, false).getClusterState();
    assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(0));
    assertThat(clusterState.getRoutingNodes().shardsWithState(RELOCATING).size(), equalTo(1));
    // +1 for relocating shard.
    assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(4));
    // Still 1 unassigned.
    assertThat(clusterState.getRoutingNodes().shardsWithState(UNASSIGNED).size(), equalTo(1));
}

Example 3 with CancelAllocationCommand

use of org.elasticsearch.cluster.routing.allocation.command.CancelAllocationCommand in project elasticsearch by elastic.

the class AllocationCommandsTests method testSerialization.

public void testSerialization() throws Exception {
    AllocationCommands commands = new AllocationCommands(new AllocateEmptyPrimaryAllocationCommand("test", 1, "node1", true), new AllocateStalePrimaryAllocationCommand("test", 2, "node1", true), new AllocateReplicaAllocationCommand("test", 2, "node1"), new MoveAllocationCommand("test", 3, "node2", "node3"), new CancelAllocationCommand("test", 4, "node5", true));
    BytesStreamOutput bytes = new BytesStreamOutput();
    AllocationCommands.writeTo(commands, bytes);
    StreamInput in = bytes.bytes().streamInput();
    // Since the commands are named writeable we need to register them and wrap the input stream
    NamedWriteableRegistry namedWriteableRegistry = new NamedWriteableRegistry(NetworkModule.getNamedWriteables());
    in = new NamedWriteableAwareStreamInput(in, namedWriteableRegistry);
    // Now we can read them!
    AllocationCommands sCommands = AllocationCommands.readFrom(in);
    assertThat(sCommands.commands().size(), equalTo(5));
    assertThat(((AllocateEmptyPrimaryAllocationCommand) (sCommands.commands().get(0))).shardId(), equalTo(1));
    assertThat(((AllocateEmptyPrimaryAllocationCommand) (sCommands.commands().get(0))).index(), equalTo("test"));
    assertThat(((AllocateEmptyPrimaryAllocationCommand) (sCommands.commands().get(0))).node(), equalTo("node1"));
    assertThat(((AllocateEmptyPrimaryAllocationCommand) (sCommands.commands().get(0))).acceptDataLoss(), equalTo(true));
    assertThat(((AllocateStalePrimaryAllocationCommand) (sCommands.commands().get(1))).shardId(), equalTo(2));
    assertThat(((AllocateStalePrimaryAllocationCommand) (sCommands.commands().get(1))).index(), equalTo("test"));
    assertThat(((AllocateStalePrimaryAllocationCommand) (sCommands.commands().get(1))).node(), equalTo("node1"));
    assertThat(((AllocateStalePrimaryAllocationCommand) (sCommands.commands().get(1))).acceptDataLoss(), equalTo(true));
    assertThat(((AllocateReplicaAllocationCommand) (sCommands.commands().get(2))).shardId(), equalTo(2));
    assertThat(((AllocateReplicaAllocationCommand) (sCommands.commands().get(2))).index(), equalTo("test"));
    assertThat(((AllocateReplicaAllocationCommand) (sCommands.commands().get(2))).node(), equalTo("node1"));
    assertThat(((MoveAllocationCommand) (sCommands.commands().get(3))).shardId(), equalTo(3));
    assertThat(((MoveAllocationCommand) (sCommands.commands().get(3))).index(), equalTo("test"));
    assertThat(((MoveAllocationCommand) (sCommands.commands().get(3))).fromNode(), equalTo("node2"));
    assertThat(((MoveAllocationCommand) (sCommands.commands().get(3))).toNode(), equalTo("node3"));
    assertThat(((CancelAllocationCommand) (sCommands.commands().get(4))).shardId(), equalTo(4));
    assertThat(((CancelAllocationCommand) (sCommands.commands().get(4))).index(), equalTo("test"));
    assertThat(((CancelAllocationCommand) (sCommands.commands().get(4))).node(), equalTo("node5"));
    assertThat(((CancelAllocationCommand) (sCommands.commands().get(4))).allowPrimary(), equalTo(true));
}