Package org.elasticsearch.cluster.routing

Examples of org.elasticsearch.cluster.routing.ShardIterator

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@Test
public class RoutingIteratorTests {

    @Test public void testEmptyIterator() {
        ShardIterator shardIterator = new PlainShardIterator(new ShardId("test1", 0), ImmutableList.<ShardRouting>of(), 0);
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.firstOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));

        shardIterator = new PlainShardIterator(new ShardId("test1", 0), ImmutableList.<ShardRouting>of(), 1);
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.firstOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));

        shardIterator = new PlainShardIterator(new ShardId("test1", 0), ImmutableList.<ShardRouting>of(), 2);
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.firstOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));

        shardIterator = new PlainShardIterator(new ShardId("test1", 0), ImmutableList.<ShardRouting>of(), 3);
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.firstOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
    }
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                .build();
        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test1").initializeEmpty(metaData.index("test1")))
                .build();

        ShardIterator shardIterator = routingTable.index("test1").shard(0).shardsIt(0);
        assertThat(shardIterator.size(), equalTo(3));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.remaining(), equalTo(3));
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        assertThat(shardIterator.remaining(), equalTo(3));
        ShardRouting shardRouting1 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(2));
        ShardRouting shardRouting2 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(1));
        assertThat(shardRouting2, not(sameInstance(shardRouting1)));
        ShardRouting shardRouting3 = shardIterator.nextOrNull();
        assertThat(shardRouting3, notNullValue());
        assertThat(shardRouting3, not(sameInstance(shardRouting1)));
        assertThat(shardRouting3, not(sameInstance(shardRouting2)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
    }
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test1").initializeEmpty(metaData.index("test1")))
                .add(indexRoutingTable("test2").initializeEmpty(metaData.index("test2")))
                .build();

        ShardIterator shardIterator = routingTable.index("test1").shard(0).shardsIt(0);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.remaining(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        assertThat(shardIterator.remaining(), equalTo(2));
        ShardRouting shardRouting1 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(1));
        ShardRouting shardRouting2 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardRouting2, not(sameInstance(shardRouting1)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.remaining(), equalTo(0));

        shardIterator = routingTable.index("test1").shard(0).shardsIt(1);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        ShardRouting shardRouting3 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        ShardRouting shardRouting4 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        assertThat(shardRouting2, not(sameInstance(shardRouting1)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        assertThat(shardRouting1, not(sameInstance(shardRouting3)));
        assertThat(shardRouting2, not(sameInstance(shardRouting4)));
        assertThat(shardRouting1, sameInstance(shardRouting4));
        assertThat(shardRouting2, sameInstance(shardRouting3));

        shardIterator = routingTable.index("test1").shard(0).shardsIt(2);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        ShardRouting shardRouting5 = shardIterator.nextOrNull();
        assertThat(shardRouting5, notNullValue());
        ShardRouting shardRouting6 = shardIterator.nextOrNull();
        assertThat(shardRouting6, notNullValue());
        assertThat(shardRouting6, not(sameInstance(shardRouting5)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        assertThat(shardRouting5, sameInstance(shardRouting1));
        assertThat(shardRouting6, sameInstance(shardRouting2));

        shardIterator = routingTable.index("test1").shard(0).shardsIt(3);
        assertThat(shardIterator.size(), equalTo(2));
        assertThat(shardIterator.firstOrNull(), notNullValue());
        assertThat(shardIterator.firstOrNull(), sameInstance(shardIterator.firstOrNull()));
        ShardRouting shardRouting7 = shardIterator.nextOrNull();
        assertThat(shardRouting7, notNullValue());
        ShardRouting shardRouting8 = shardIterator.nextOrNull();
        assertThat(shardRouting8, notNullValue());
        assertThat(shardRouting8, not(sameInstance(shardRouting7)));
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        assertThat(shardRouting7, sameInstance(shardRouting3));
        assertThat(shardRouting8, sameInstance(shardRouting4));
    }
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        RoutingTable routingTable = routingTable()
                .add(indexRoutingTable("test1").initializeEmpty(metaData.index("test1")))
                .add(indexRoutingTable("test2").initializeEmpty(metaData.index("test2")))
                .build();

        ShardIterator shardIterator = routingTable.index("test1").shard(0).shardsRandomIt();
        ShardRouting shardRouting1 = shardIterator.nextOrNull();
        assertThat(shardRouting1, notNullValue());
        assertThat(shardIterator.nextOrNull(), notNullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());

        shardIterator = routingTable.index("test1").shard(0).shardsRandomIt();
        ShardRouting shardRouting2 = shardIterator.nextOrNull();
        assertThat(shardRouting2, notNullValue());
        ShardRouting shardRouting3 = shardIterator.nextOrNull();
        assertThat(shardRouting3, notNullValue());
        assertThat(shardIterator.nextOrNull(), nullValue());
        assertThat(shardRouting1, not(sameInstance(shardRouting2)));
        assertThat(shardRouting1, sameInstance(shardRouting3));
    }
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        latch.await();
        assertTrue(hadBlocked.get());
    }

    private void mockShard(OperationRouting operationRouting, Integer shardId) {
        ShardIterator shardIterator = mock(ShardIterator.class);
        when(operationRouting.indexShards(
                any(ClusterState.class),
                anyString(),
                anyString(),
                Matchers.eq(shardId.toString()),
                anyString())).thenReturn(shardIterator);
        when(shardIterator.shardId()).thenReturn(new ShardId("foo", shardId));
    }
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     * @param index  the name of blob-enabled index
     * @param digest sha-1 hash value of the file
     * @return null if no redirect is required, Otherwise the address to which should be redirected.
     */
    public String getRedirectAddress(String index, String digest) throws MissingHTTPEndpointException {
        ShardIterator shards = clusterService.operationRouting().getShards(
                clusterService.state(), index, null, null, digest, "_local");

        ShardRouting shard;
        Set<String> nodeIds = new HashSet<>();

        // check if one of the shards is on the current node;
        while ((shard = shards.nextOrNull()) != null) {
            if (!shard.active()) {
                continue;
            }
            if (shard.currentNodeId().equals(clusterService.localNode().getId())) {
                return null;
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        this.operationRouting = operationRouting;
        this.clusterService = clusterService;
    }

    public ShardId shardId(String digest) {
        ShardIterator si = operationRouting.getShards(clusterService.state(), index.getName(), null, null, digest, "_only_local");
        // TODO: check null and raise
        return si.shardId();
    }
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    @Override
    public GroupShardsIterator searchShards(ClusterState clusterState, String[] indices, String[] concreteIndices, @Nullable Map<String, Set<String>> routing, @Nullable String preference) throws IndexMissingException {
        final Set<IndexShardRoutingTable> shards = computeTargetedShards(clusterState, concreteIndices, routing);
        final Set<ShardIterator> set = new HashSet<>(shards.size());
        for (IndexShardRoutingTable shard : shards) {
            ShardIterator iterator = preferenceActiveShardIterator(shard, clusterState.nodes().localNodeId(), clusterState.nodes(), preference);
            if (iterator != null) {
                set.add(iterator);
            }
        }
        return new GroupShardsIterator(Lists.newArrayList(set));
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        });
    }

    // Redirects the request to a data node, that has the index meta data locally available.
    private void redirect(MoreLikeThisRequest request, String concreteIndex, final ActionListener<SearchResponse> listener, ClusterState clusterState) {
        ShardIterator shardIterator = clusterService.operationRouting().getShards(clusterState, concreteIndex, request.type(), request.id(), request.routing(), null);
        ShardRouting shardRouting = shardIterator.nextOrNull();
        if (shardRouting == null) {
            throw new ElasticsearchException("No shards for index " + request.index());
        }
        String nodeId = shardRouting.currentNodeId();
        DiscoveryNode discoveryNode = clusterState.nodes().get(nodeId);
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    @Override
    protected ShardIterator shards(ClusterState clusterState, InternalRequest request) throws ElasticsearchException {
        if (request.request().shardId() != -1) {
            return clusterState.routingTable().index(request.concreteIndex()).shard(request.request().shardId()).primaryShardIt();
        }
        ShardIterator shardIterator = clusterService.operationRouting()
                .indexShards(clusterState, request.concreteIndex(), request.request().type(), request.request().id(), request.request().routing());
        ShardRouting shard;
        while ((shard = shardIterator.nextOrNull()) != null) {
            if (shard.primary()) {
                return new PlainShardIterator(shardIterator.shardId(), ImmutableList.of(shard));
            }
        }
        return new PlainShardIterator(shardIterator.shardId(), ImmutableList.<ShardRouting>of());
    }
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Related Classes of org.elasticsearch.cluster.routing.ShardIterator

  • io.crate.blob.BlobService
  • io.crate.blob.v2.BlobIndex
  • org.elasticsearch.action.bulk.BulkShardProcessorTest
  • org.elasticsearch.action.mlt.TransportMoreLikeThisAction
  • org.elasticsearch.action.update.TransportUpdateAction
  • org.elasticsearch.cluster.routing.operation.plain.PlainOperationRouting
  • org.elasticsearch.cluster.structure.RoutingIteratorTests
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