Examples with ScheduledSplit com.facebook.presto.execution.ScheduledSplit used on opensource projects

Example 16 with ScheduledSplit

use of com.facebook.presto.execution.ScheduledSplit in project presto by prestodb.

the class TestSystemMemoryBlocking method testTableScanSystemMemoryBlocking.

@Test
public void testTableScanSystemMemoryBlocking() {
    PlanNodeId sourceId = new PlanNodeId("source");
    final List<Type> types = ImmutableList.of(VARCHAR);
    TableScanOperator source = new TableScanOperator(driverContext.addOperatorContext(1, new PlanNodeId("test"), "values"), sourceId, (session, split, table, columns) -> new FixedPageSource(rowPagesBuilder(types).addSequencePage(10, 1).addSequencePage(10, 1).addSequencePage(10, 1).addSequencePage(10, 1).addSequencePage(10, 1).build()), new TableHandle(new ConnectorId("test"), new ConnectorTableHandle() {
    }, new ConnectorTransactionHandle() {
    }, Optional.empty()), ImmutableList.of());
    PageConsumerOperator sink = createSinkOperator(types);
    Driver driver = Driver.createDriver(driverContext, source, sink);
    assertSame(driver.getDriverContext(), driverContext);
    assertFalse(driver.isFinished());
    Split testSplit = new Split(new ConnectorId("test"), TestingTransactionHandle.create(), new TestSplit());
    driver.updateSource(new TaskSource(sourceId, ImmutableSet.of(new ScheduledSplit(0, sourceId, testSplit)), true));
    ListenableFuture<?> blocked = driver.processFor(new Duration(1, NANOSECONDS));
    // the driver shouldn't block in the first call as it will be able to move a page between source and the sink operator
    // but the operator should be blocked
    assertTrue(blocked.isDone());
    assertFalse(source.getOperatorContext().isWaitingForMemory().isDone());
    // and they should stay blocked until more memory becomes available
    for (int i = 0; i < 10; i++) {
        blocked = driver.processFor(new Duration(1, NANOSECONDS));
        assertFalse(blocked.isDone());
        assertFalse(source.getOperatorContext().isWaitingForMemory().isDone());
    }
    // free up some memory
    memoryPool.free(QUERY_ID, "test", memoryPool.getReservedBytes());
    // the operator should be unblocked
    assertTrue(source.getOperatorContext().isWaitingForMemory().isDone());
    // the driver shouldn't be blocked
    blocked = driver.processFor(new Duration(1, NANOSECONDS));
    assertTrue(blocked.isDone());
}

Example 17 with ScheduledSplit

use of com.facebook.presto.execution.ScheduledSplit in project presto by prestodb.

the class Driver method processNewSources.

@GuardedBy("exclusiveLock")
private void processNewSources() {
    checkLockHeld("Lock must be held to call processNewSources");
    // only update if the driver is still alive
    if (state.get() != State.ALIVE) {
        return;
    }
    TaskSource sourceUpdate = pendingTaskSourceUpdates.getAndSet(null);
    if (sourceUpdate == null) {
        return;
    }
    // merge the current source and the specified source update
    TaskSource newSource = currentTaskSource.update(sourceUpdate);
    // if the update contains no new data, just return
    if (newSource == currentTaskSource) {
        return;
    }
    // determine new splits to add
    Set<ScheduledSplit> newSplits = Sets.difference(newSource.getSplits(), currentTaskSource.getSplits());
    // add new splits
    SourceOperator sourceOperator = this.sourceOperator.orElseThrow(VerifyException::new);
    for (ScheduledSplit newSplit : newSplits) {
        Split split = newSplit.getSplit();
        if (fragmentResultCacheContext.get().isPresent() && !(split.getConnectorSplit() instanceof RemoteSplit)) {
            checkState(!this.cachedResult.get().isPresent());
            this.fragmentResultCacheContext.set(this.fragmentResultCacheContext.get().map(context -> context.updateRuntimeInformation(split.getConnectorSplit())));
            Optional<Iterator<Page>> pages = fragmentResultCacheContext.get().get().getFragmentResultCacheManager().get(fragmentResultCacheContext.get().get().getHashedCanonicalPlanFragment(), split);
            sourceOperator.getOperatorContext().getRuntimeStats().addMetricValue(pages.isPresent() ? RuntimeMetricName.FRAGMENT_RESULT_CACHE_HIT : RuntimeMetricName.FRAGMENT_RESULT_CACHE_MISS, 1);
            this.cachedResult.set(pages);
            this.split.set(split);
        }
        Supplier<Optional<UpdatablePageSource>> pageSource = sourceOperator.addSplit(split);
        deleteOperator.ifPresent(deleteOperator -> deleteOperator.setPageSource(pageSource));
    }
    // set no more splits
    if (newSource.isNoMoreSplits()) {
        sourceOperator.noMoreSplits();
    }
    currentTaskSource = newSource;
}

Example 18 with ScheduledSplit

use of com.facebook.presto.execution.ScheduledSplit in project presto by prestodb.

the class IndexLoader method streamIndexDataForSingleKey.

public IndexedData streamIndexDataForSingleKey(UpdateRequest updateRequest) {
    Page indexKeyTuple = updateRequest.getPage().getRegion(0, 1);
    PageBuffer pageBuffer = new PageBuffer(100);
    DriverFactory driverFactory = indexBuildDriverFactoryProvider.createStreaming(pageBuffer, indexKeyTuple);
    Driver driver = driverFactory.createDriver(pipelineContext.addDriverContext());
    PageRecordSet pageRecordSet = new PageRecordSet(keyTypes, indexKeyTuple);
    PlanNodeId planNodeId = driverFactory.getSourceId().get();
    ScheduledSplit split = new ScheduledSplit(0, planNodeId, new Split(INDEX_CONNECTOR_ID, new ConnectorTransactionHandle() {
    }, new IndexSplit(pageRecordSet)));
    driver.updateSource(new TaskSource(planNodeId, ImmutableSet.of(split), true));
    return new StreamingIndexedData(outputTypes, keyTypes, indexKeyTuple, pageBuffer, driver);
}

Example 19 with ScheduledSplit

use of com.facebook.presto.execution.ScheduledSplit in project presto by prestodb.

the class PrestoSparkTaskExecution method scheduleDriversForSplitLifeCycle.

private synchronized void scheduleDriversForSplitLifeCycle(List<TaskSource> sources) {
    checkArgument(sources.stream().allMatch(TaskSource::isNoMoreSplits), "All task sources are expected to be final");
    ListMultimap<PlanNodeId, ScheduledSplit> splits = ArrayListMultimap.create();
    for (TaskSource taskSource : sources) {
        splits.putAll(taskSource.getPlanNodeId(), taskSource.getSplits());
    }
    for (PlanNodeId planNodeId : schedulingOrder) {
        DriverSplitRunnerFactory driverSplitRunnerFactory = driverRunnerFactoriesWithSplitLifeCycle.get(planNodeId);
        List<ScheduledSplit> planNodeSplits = splits.get(planNodeId);
        scheduleTableScanSource(driverSplitRunnerFactory, planNodeSplits);
    }
}

Example 20 with ScheduledSplit

use of com.facebook.presto.execution.ScheduledSplit in project presto by prestodb.

the class PrestoSparkRddFactory method createTaskSources.

private ListMultimap<Integer, SerializedPrestoSparkTaskSource> createTaskSources(PlanNodeId tableScanId, SetMultimap<Integer, ScheduledSplit> assignedSplits) {
    ListMultimap<Integer, SerializedPrestoSparkTaskSource> result = ArrayListMultimap.create();
    for (int partitionId : ImmutableSet.copyOf(assignedSplits.keySet())) {
        // remove the entry from the collection to let GC reclaim the memory
        Set<ScheduledSplit> splits = assignedSplits.removeAll(partitionId);
        TaskSource taskSource = new TaskSource(tableScanId, splits, true);
        SerializedPrestoSparkTaskSource serializedTaskSource = new SerializedPrestoSparkTaskSource(serializeZstdCompressed(taskSourceCodec, taskSource));
        result.put(partitionId, serializedTaskSource);
    }
    return result;
}