Examples with LocalPartitionGenerator io.trino.operator.exchange.LocalPartitionGenerator used on opensource projects

Example 1 with LocalPartitionGenerator

use of io.trino.operator.exchange.LocalPartitionGenerator in project trino by trinodb.

the class BenchmarkHashBuildAndJoinOperators method buildHash.

private static void buildHash(BuildContext buildContext, JoinBridgeManager<PartitionedLookupSourceFactory> lookupSourceFactoryManager, List<Integer> outputChannels, int partitionCount) {
    HashBuilderOperatorFactory hashBuilderOperatorFactory = new HashBuilderOperatorFactory(HASH_BUILD_OPERATOR_ID, TEST_PLAN_NODE_ID, lookupSourceFactoryManager, outputChannels, buildContext.getHashChannels(), buildContext.getHashChannel(), Optional.empty(), Optional.empty(), ImmutableList.of(), 10_000, new PagesIndex.TestingFactory(false), false, SingleStreamSpillerFactory.unsupportedSingleStreamSpillerFactory(), incrementalLoadFactorHashArraySizeSupplier(buildContext.getSession()));
    Operator[] operators = IntStream.range(0, partitionCount).mapToObj(i -> buildContext.createTaskContext().addPipelineContext(0, true, true, partitionCount > 1).addDriverContext()).map(hashBuilderOperatorFactory::createOperator).toArray(Operator[]::new);
    if (partitionCount == 1) {
        for (Page page : buildContext.getBuildPages()) {
            operators[0].addInput(page);
        }
    } else {
        PartitionFunction partitionGenerator = new LocalPartitionGenerator(new InterpretedHashGenerator(buildContext.getHashChannels().stream().map(channel -> buildContext.getTypes().get(channel)).collect(toImmutableList()), buildContext.getHashChannels(), TYPE_OPERATOR_FACTORY), partitionCount);
        for (Page page : buildContext.getBuildPages()) {
            Page[] partitionedPages = partitionPages(page, buildContext.getTypes(), partitionCount, partitionGenerator);
            for (int i = 0; i < partitionCount; i++) {
                operators[i].addInput(partitionedPages[i]);
            }
        }
    }
    LookupSourceFactory lookupSourceFactory = lookupSourceFactoryManager.getJoinBridge(Lifespan.taskWide());
    ListenableFuture<LookupSourceProvider> lookupSourceProvider = lookupSourceFactory.createLookupSourceProvider();
    for (Operator operator : operators) {
        operator.finish();
    }
    if (!lookupSourceProvider.isDone()) {
        throw new AssertionError("Expected lookup source provider to be ready");
    }
    getFutureValue(lookupSourceProvider).close();
}