Examples with UpdatablePageSource io.trino.spi.connector.UpdatablePageSource used on opensource projects

Example 1 with UpdatablePageSource

use of io.trino.spi.connector.UpdatablePageSource in project trino by trinodb.

the class MergeOperator method addSplit.

@Override
public Supplier<Optional<UpdatablePageSource>> addSplit(Split split) {
    requireNonNull(split, "split is null");
    checkArgument(split.getConnectorSplit() instanceof RemoteSplit, "split is not a remote split");
    checkState(!blockedOnSplits.isDone(), "noMoreSplits has been called already");
    TaskContext taskContext = operatorContext.getDriverContext().getPipelineContext().getTaskContext();
    DirectExchangeClient client = closer.register(directExchangeClientSupplier.get(taskContext.getTaskId().getQueryId(), new ExchangeId(format("direct-exchange-merge-%s-%s", taskContext.getTaskId().getStageId().getId(), sourceId)), operatorContext.localUserMemoryContext(), taskContext::sourceTaskFailed, RetryPolicy.NONE));
    RemoteSplit remoteSplit = (RemoteSplit) split.getConnectorSplit();
    // Only fault tolerant execution mode is expected to execute external exchanges.
    // MergeOperator is used for distributed sort only and it is not compatible (and disabled) with fault tolerant execution mode.
    DirectExchangeInput exchangeInput = (DirectExchangeInput) remoteSplit.getExchangeInput();
    client.addLocation(exchangeInput.getTaskId(), URI.create(exchangeInput.getLocation()));
    client.noMoreLocations();
    pageProducers.add(client.pages().map(serializedPage -> {
        Page page = pagesSerde.deserialize(serializedPage);
        operatorContext.recordNetworkInput(serializedPage.length(), page.getPositionCount());
        return page;
    }));
    return Optional::empty;
}

Example 2 with UpdatablePageSource

use of io.trino.spi.connector.UpdatablePageSource in project trino by trinodb.

the class TableScanOperator method addSplit.

@Override
public Supplier<Optional<UpdatablePageSource>> addSplit(Split split) {
    requireNonNull(split, "split is null");
    checkState(this.split == null, "Table scan split already set");
    if (finished) {
        return Optional::empty;
    }
    this.split = split;
    Object splitInfo = split.getInfo();
    if (splitInfo != null) {
        operatorContext.setInfoSupplier(Suppliers.ofInstance(new SplitOperatorInfo(split.getCatalogName(), splitInfo)));
    }
    blocked.set(null);
    if (split.getConnectorSplit() instanceof EmptySplit) {
        source = new EmptyPageSource();
    }
    return () -> {
        if (source instanceof UpdatablePageSource) {
            return Optional.of((UpdatablePageSource) source);
        }
        return Optional.empty();
    };
}