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

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

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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));
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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));
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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));
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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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        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(0));

        logger.info("--> allocating with primary flag set to false, should fail");
        try {
            allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node1", false)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }

        logger.info("--> allocating to non-data node, should fail");
        try {
            rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node4", true)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }

        logger.info("--> allocating with primary flag set to true");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node1", true)));
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node1").shardsWithState(INITIALIZING).size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node2").size(), equalTo(0));

        logger.info("--> start the primary shard");
        rerouteResult = allocation.applyStartedShards(clusterState, clusterState.routingNodes().shardsWithState(INITIALIZING));
        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(0));

        logger.info("--> allocate the replica shard on the primary shard node, should fail");
        try {
            allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node1", false)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }

        logger.info("--> allocate the replica shard on on the second node");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node2", false)));
        assertThat(rerouteResult.changed(), equalTo(true));
        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(INITIALIZING).size(), equalTo(1));


        logger.info("--> start the replica shard");
        rerouteResult = allocation.applyStartedShards(clusterState, clusterState.routingNodes().shardsWithState(INITIALIZING));
        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(STARTED).size(), equalTo(1));

        logger.info("--> verify that we fail when there are no unassigned shards");
        try {
            allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node3", false)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }
    }
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        RoutingAllocation.Result rerouteResult = allocation.reroute(clusterState);
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(0));

        logger.info("--> allocating with primary flag set to true");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node1", true)));
        assertThat(rerouteResult.changed(), equalTo(true));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(clusterState.routingNodes().node("node1").size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node1").shardsWithState(INITIALIZING).size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node2").size(), equalTo(0));

        logger.info("--> cancel primary allocation, make sure it fails...");
        try {
            allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node1", false)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }

        logger.info("--> start the primary shard");
        rerouteResult = allocation.applyStartedShards(clusterState, clusterState.routingNodes().shardsWithState(INITIALIZING));
        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(0));

        logger.info("--> cancel primary allocation, make sure it fails...");
        try {
            allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node1", false)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }

        logger.info("--> allocate the replica shard on on the second node");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node2", false)));
        assertThat(rerouteResult.changed(), equalTo(true));
        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(INITIALIZING).size(), equalTo(1));

        logger.info("--> cancel the relocation allocation");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node2", false)));
        assertThat(rerouteResult.changed(), equalTo(true));
        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(0));
        assertThat(clusterState.routingNodes().node("node3").size(), equalTo(0));

        logger.info("--> allocate the replica shard on on the second node");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node2", false)));
        assertThat(rerouteResult.changed(), equalTo(true));
        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(INITIALIZING).size(), equalTo(1));

        logger.info("--> cancel the primary being replicated, make sure it fails");
        try {
            allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node1", false)));
            fail();
        } catch (ElasticsearchIllegalArgumentException e) {
        }

        logger.info("--> start the replica shard");
        rerouteResult = allocation.applyStartedShards(clusterState, clusterState.routingNodes().shardsWithState(INITIALIZING));
        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(STARTED).size(), equalTo(1));

        logger.info("--> cancel allocation of the replica shard");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node2", false)));
        assertThat(rerouteResult.changed(), equalTo(true));
        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(0));
        assertThat(clusterState.routingNodes().node("node3").size(), equalTo(0));

        logger.info("--> allocate the replica shard on on the second node");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new AllocateAllocationCommand(new ShardId("test", 0), "node2", false)));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(rerouteResult.changed(), equalTo(true));
        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(INITIALIZING).size(), equalTo(1));
        logger.info("--> start the replica shard");
        rerouteResult = allocation.applyStartedShards(clusterState, clusterState.routingNodes().shardsWithState(INITIALIZING));
        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(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));
        assertThat(clusterState.routingNodes().node("node3").size(), equalTo(1));
        assertThat(clusterState.routingNodes().node("node3").shardsWithState(INITIALIZING).size(), equalTo(1));

        logger.info("--> cancel the move of the replica shard");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node3", false)));
        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(STARTED).size(), equalTo(1));


        logger.info("--> cancel the primary allocation (with allow_primary set to true)");
        rerouteResult = allocation.reroute(clusterState, new AllocationCommands(new CancelAllocationCommand(new ShardId("test", 0), "node1", true)));
        clusterState = ClusterState.builder(clusterState).routingTable(rerouteResult.routingTable()).build();
        assertThat(rerouteResult.changed(), equalTo(true));
        assertThat(clusterState.routingNodes().node("node2").shardsWithState(STARTED).get(0).primary(), equalTo(true));
        assertThat(clusterState.routingNodes().node("node1").size(), equalTo(0));
        assertThat(clusterState.routingNodes().node("node3").size(), equalTo(0));
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        assertThat(clusterState.routingNodes().node("node3").size(), equalTo(0));
    }

    @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()));

        assertThat(sCommands.commands().size(), equalTo(3));
        assertThat(((AllocateAllocationCommand) (sCommands.commands().get(0))).shardId(), equalTo(new ShardId("test", 1)));
        assertThat(((AllocateAllocationCommand) (sCommands.commands().get(0))).node(), equalTo("node1"));
        assertThat(((AllocateAllocationCommand) (sCommands.commands().get(0))).allowPrimary(), equalTo(true));

        assertThat(((MoveAllocationCommand) (sCommands.commands().get(1))).shardId(), equalTo(new ShardId("test", 3)));
        assertThat(((MoveAllocationCommand) (sCommands.commands().get(1))).fromNode(), equalTo("node2"));
        assertThat(((MoveAllocationCommand) (sCommands.commands().get(1))).toNode(), equalTo("node3"));

        assertThat(((CancelAllocationCommand) (sCommands.commands().get(2))).shardId(), equalTo(new ShardId("test", 4)));
        assertThat(((CancelAllocationCommand) (sCommands.commands().get(2))).node(), equalTo("node5"));
        assertThat(((CancelAllocationCommand) (sCommands.commands().get(2))).allowPrimary(), equalTo(true));
    }
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                "}\n";
        XContentParser parser = XContentFactory.xContent(XContentType.JSON).createParser(commands);
        // move two tokens, parser expected to be "on" `commands` field
        parser.nextToken();
        parser.nextToken();
        AllocationCommands sCommands = AllocationCommands.fromXContent(parser);

        assertThat(sCommands.commands().size(), equalTo(3));
        assertThat(((AllocateAllocationCommand) (sCommands.commands().get(0))).shardId(), equalTo(new ShardId("test", 1)));
        assertThat(((AllocateAllocationCommand) (sCommands.commands().get(0))).node(), equalTo("node1"));
        assertThat(((AllocateAllocationCommand) (sCommands.commands().get(0))).allowPrimary(), equalTo(true));

        assertThat(((MoveAllocationCommand) (sCommands.commands().get(1))).shardId(), equalTo(new ShardId("test", 3)));
        assertThat(((MoveAllocationCommand) (sCommands.commands().get(1))).fromNode(), equalTo("node2"));
        assertThat(((MoveAllocationCommand) (sCommands.commands().get(1))).toNode(), equalTo("node3"));

        assertThat(((CancelAllocationCommand) (sCommands.commands().get(2))).shardId(), equalTo(new ShardId("test", 4)));
        assertThat(((CancelAllocationCommand) (sCommands.commands().get(2))).node(), equalTo("node5"));
        assertThat(((CancelAllocationCommand) (sCommands.commands().get(2))).allowPrimary(), equalTo(true));
    }
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        clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
                        .put(newNode("node3"))
        ).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);

        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
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Related Classes of org.elasticsearch.cluster.routing.allocation.command.AllocationCommands

  • org.elasticsearch.cluster.routing.allocation.AllocationCommandsTests
  • org.elasticsearch.cluster.routing.allocation.DeadNodesAllocationTests
  • org.elasticsearch.cluster.routing.allocation.decider.DiskThresholdDeciderTests
  • org.elasticsearch.cluster.routing.allocation.FailedShardsRoutingTests
  • org.elasticsearch.cluster.routing.allocation.RoutingExplanations
  • org.elasticsearch.ElasticsearchParseException
  • org.elasticsearch.ElasticsearchIllegalArgumentException
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