Package com.facebook.presto

Examples of com.facebook.presto.TaskSource

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                for (ScheduledSplit scheduledSplit : source.getSplits()) {
                    newMaxAcknowledgedSplit = max(scheduledSplit.getSequenceId(), newMaxAcknowledgedSplit);
                }

                // create new source
                TaskSource newSource;
                TaskSource currentSource = unpartitionedSources.get(sourceId);
                if (currentSource == null) {
                    newSource = source;
                }
                else {
                    newSource = currentSource.update(source);
                }

                // only record new source if something changed
                if (newSource != currentSource) {
                    unpartitionedSources.put(sourceId, newSource);
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                for (ScheduledSplit scheduledSplit : source.getSplits()) {
                    newMaxAcknowledgedSplit = max(scheduledSplit.getSequenceId(), newMaxAcknowledgedSplit);
                }

                // create new source
                TaskSource newSource;
                TaskSource currentSource = unpartitionedSources.get(sourceId);
                if (currentSource == null) {
                    newSource = source;
                }
                else {
                    newSource = currentSource.update(source);
                }

                // only record new source if something changed
                if (newSource != currentSource) {
                    unpartitionedSources.put(sourceId, newSource);
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        Driver driver = driverFactory.createDriver(driverContext);

        if (partitionedSplit != null) {
            // TableScanOperator requires partitioned split to be added before task is started
            driver.updateSource(new TaskSource(partitionedSourceId, ImmutableSet.of(partitionedSplit), true));
        }

        // record driver so other threads add unpartitioned sources can see the driver
        // NOTE: this MUST be done before reading unpartitionedSources, so we see a consistent view of the unpartitioned sources
        drivers.add(new WeakReference<>(driver));
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                for (ScheduledSplit scheduledSplit : source.getSplits()) {
                    newMaxAcknowledgedSplit = max(scheduledSplit.getSequenceId(), newMaxAcknowledgedSplit);
                }

                // create new source
                TaskSource newSource;
                TaskSource currentSource = unpartitionedSources.get(sourceId);
                if (currentSource == null) {
                    newSource = source;
                }
                else {
                    newSource = currentSource.update(source);
                }

                // only record new source if something changed
                if (newSource != currentSource) {
                    unpartitionedSources.put(sourceId, newSource);
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            // NOTE: this MUST be done before reading unpartitionedSources, so we see a consistent view of the unpartitioned sources
            drivers.add(new WeakReference<>(driver));

            if (partitionedSplit != null) {
                // TableScanOperator requires partitioned split to be added before the first call to process
                driver.updateSource(new TaskSource(partitionedSourceId, ImmutableSet.of(partitionedSplit), true));
            }

            // add unpartitioned sources
            for (TaskSource source : unpartitionedSources.values()) {
                driver.updateSource(source);
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            return;
        }

        // create new source
        Set<ScheduledSplit> newSplits;
        TaskSource currentSource = sources.get(sourceId);
        if (currentSource == null) {
            newSplits = source.getSplits();
        }
        else {
            // merge the current source and the specified source
            TaskSource newSource = currentSource.update(source);

            // if this is not a new source, just return
            if (newSource == currentSource) {
                return;
            }

            // find the new splits to add
            newSplits = Sets.difference(newSource.getSplits(), currentSource.getSplits());
            sources.put(sourceId, newSource);
        }

        // add new splits
        for (ScheduledSplit newSplit : newSplits) {
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            // NOTE: this MUST be done before reading unpartitionedSources, so we see a consistent view of the unpartitioned sources
            drivers.add(new WeakReference<>(driver));

            if (partitionedSplit != null) {
                // TableScanOperator requires partitioned split to be added before the first call to process
                driver.updateSource(new TaskSource(partitionedSourceId, ImmutableSet.of(partitionedSplit), true));
            }

            // add unpartitioned sources
            for (TaskSource source : unpartitionedSources.values()) {
                driver.updateSource(source);
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                    Thread.currentThread().interrupt();
                    throw Throwables.propagate(e);
                }
            }

            sources.add(new TaskSource(tableScan.getId(), scheduledSplits.build(), true));
        }

        // create drivers
        List<Driver> drivers = new ArrayList<>();
        Map<PlanNodeId, Driver> driversBySource = new HashMap<>();
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        ImmutableList.Builder<TaskSource> sources = ImmutableList.builder();
        for (PlanNodeId planNodeId : planFragment.getSourceIds()) {
            Set<ScheduledSplit> splits = pendingSplits.get(planNodeId);
            boolean noMoreSplits = this.noMoreSplits.contains(planNodeId);
            if (!splits.isEmpty() || noMoreSplits) {
                sources.add(new TaskSource(planNodeId, splits, noMoreSplits));
            }
        }
        return sources.build();
    }
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        private IndexSnapshot batchLoadRequests(UnloadedIndexKeyRecordSet unloadedKeysRecordSet)
        {
            // Drive index lookup to produce the output (landing in pagesIndexOutput)
            Driver driver = driverFactory.createDriver(pipelineContext.addDriverContext());
            driver.updateSource(new TaskSource(sourcePlanNodeId, ImmutableSet.of(new ScheduledSplit(0, new Split("index", new IndexSplit(unloadedKeysRecordSet)))), true));
            while (!driver.isFinished()) {
                ListenableFuture<?> process = driver.process();
                checkState(process.isDone(), "Driver should never block");
            }
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Related Classes of com.facebook.presto.TaskSource

  • com.facebook.presto.execution.SqlTaskExecution
  • com.facebook.presto.execution.SqlTaskExecution$DriverSplitRunnerFactory
  • com.facebook.presto.execution.TestSqlTask
  • com.facebook.presto.execution.TestSqlTaskExecution
  • com.facebook.presto.execution.TestSqlTaskManager
  • com.facebook.presto.operator.Driver
  • com.facebook.presto.operator.index.IndexLoader
  • com.facebook.presto.operator.index.IndexLoader$IndexSnapshotBuilder
  • com.facebook.presto.operator.index.IndexLoader$IndexSnapshotLoader
  • com.facebook.presto.operator.TestDriver
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