Examples with SCALED_WRITER_DISTRIBUTION com.facebook.presto.sql.planner.SystemPartitioningHandle.SCALED_WRITER_DISTRIBUTION used on opensource projects

Example 1 with SCALED_WRITER_DISTRIBUTION

use of com.facebook.presto.sql.planner.SystemPartitioningHandle.SCALED_WRITER_DISTRIBUTION in project presto by prestodb.

the class SectionExecutionFactory method createStageScheduler.

private StageScheduler createStageScheduler(SplitSourceFactory splitSourceFactory, Session session, StreamingSubPlan plan, Function<PartitioningHandle, NodePartitionMap> partitioningCache, Optional<SqlStageExecution> parentStageExecution, StageId stageId, SqlStageExecution stageExecution, PartitioningHandle partitioningHandle, TableWriteInfo tableWriteInfo, Set<SqlStageExecution> childStageExecutions) {
    Map<PlanNodeId, SplitSource> splitSources = splitSourceFactory.createSplitSources(plan.getFragment(), session, tableWriteInfo);
    int maxTasksPerStage = getMaxTasksPerStage(session);
    if (partitioningHandle.equals(SOURCE_DISTRIBUTION)) {
        // nodes are selected dynamically based on the constraints of the splits and the system load
        Map.Entry<PlanNodeId, SplitSource> entry = getOnlyElement(splitSources.entrySet());
        PlanNodeId planNodeId = entry.getKey();
        SplitSource splitSource = entry.getValue();
        ConnectorId connectorId = splitSource.getConnectorId();
        if (isInternalSystemConnector(connectorId)) {
            connectorId = null;
        }
        NodeSelector nodeSelector = nodeScheduler.createNodeSelector(session, connectorId, maxTasksPerStage);
        SplitPlacementPolicy placementPolicy = new DynamicSplitPlacementPolicy(nodeSelector, stageExecution::getAllTasks);
        checkArgument(!plan.getFragment().getStageExecutionDescriptor().isStageGroupedExecution());
        return newSourcePartitionedSchedulerAsStageScheduler(stageExecution, planNodeId, splitSource, placementPolicy, splitBatchSize);
    } else if (partitioningHandle.equals(SCALED_WRITER_DISTRIBUTION)) {
        Supplier<Collection<TaskStatus>> sourceTasksProvider = () -> childStageExecutions.stream().map(SqlStageExecution::getAllTasks).flatMap(Collection::stream).map(RemoteTask::getTaskStatus).collect(toList());
        Supplier<Collection<TaskStatus>> writerTasksProvider = () -> stageExecution.getAllTasks().stream().map(RemoteTask::getTaskStatus).collect(toList());
        ScaledWriterScheduler scheduler = new ScaledWriterScheduler(stageExecution, sourceTasksProvider, writerTasksProvider, nodeScheduler.createNodeSelector(session, null), scheduledExecutor, getWriterMinSize(session), isOptimizedScaleWriterProducerBuffer(session));
        whenAllStages(childStageExecutions, StageExecutionState::isDone).addListener(scheduler::finish, directExecutor());
        return scheduler;
    } else {
        if (!splitSources.isEmpty()) {
            // contains local source
            List<PlanNodeId> schedulingOrder = plan.getFragment().getTableScanSchedulingOrder();
            ConnectorId connectorId = partitioningHandle.getConnectorId().orElseThrow(IllegalStateException::new);
            List<ConnectorPartitionHandle> connectorPartitionHandles;
            boolean groupedExecutionForStage = plan.getFragment().getStageExecutionDescriptor().isStageGroupedExecution();
            if (groupedExecutionForStage) {
                connectorPartitionHandles = nodePartitioningManager.listPartitionHandles(session, partitioningHandle);
                checkState(!ImmutableList.of(NOT_PARTITIONED).equals(connectorPartitionHandles));
            } else {
                connectorPartitionHandles = ImmutableList.of(NOT_PARTITIONED);
            }
            BucketNodeMap bucketNodeMap;
            List<InternalNode> stageNodeList;
            if (plan.getFragment().getRemoteSourceNodes().stream().allMatch(node -> node.getExchangeType() == REPLICATE)) {
                // no non-replicated remote source
                boolean dynamicLifespanSchedule = plan.getFragment().getStageExecutionDescriptor().isDynamicLifespanSchedule();
                bucketNodeMap = nodePartitioningManager.getBucketNodeMap(session, partitioningHandle, dynamicLifespanSchedule);
                // verify execution is consistent with planner's decision on dynamic lifespan schedule
                verify(bucketNodeMap.isDynamic() == dynamicLifespanSchedule);
                if (bucketNodeMap.hasInitialMap()) {
                    stageNodeList = bucketNodeMap.getBucketToNode().get().stream().distinct().collect(toImmutableList());
                } else {
                    stageNodeList = new ArrayList<>(nodeScheduler.createNodeSelector(session, connectorId).selectRandomNodes(maxTasksPerStage));
                }
            } else {
                // cannot use dynamic lifespan schedule
                verify(!plan.getFragment().getStageExecutionDescriptor().isDynamicLifespanSchedule());
                // remote source requires nodePartitionMap
                NodePartitionMap nodePartitionMap = partitioningCache.apply(plan.getFragment().getPartitioning());
                if (groupedExecutionForStage) {
                    checkState(connectorPartitionHandles.size() == nodePartitionMap.getBucketToPartition().length);
                }
                stageNodeList = nodePartitionMap.getPartitionToNode();
                bucketNodeMap = nodePartitionMap.asBucketNodeMap();
            }
            FixedSourcePartitionedScheduler fixedSourcePartitionedScheduler = new FixedSourcePartitionedScheduler(stageExecution, splitSources, plan.getFragment().getStageExecutionDescriptor(), schedulingOrder, stageNodeList, bucketNodeMap, splitBatchSize, getConcurrentLifespansPerNode(session), nodeScheduler.createNodeSelector(session, connectorId), connectorPartitionHandles);
            if (plan.getFragment().getStageExecutionDescriptor().isRecoverableGroupedExecution()) {
                stageExecution.registerStageTaskRecoveryCallback(taskId -> {
                    checkArgument(taskId.getStageExecutionId().getStageId().equals(stageId), "The task did not execute this stage");
                    checkArgument(parentStageExecution.isPresent(), "Parent stage execution must exist");
                    checkArgument(parentStageExecution.get().getAllTasks().size() == 1, "Parent stage should only have one task for recoverable grouped execution");
                    parentStageExecution.get().removeRemoteSourceIfSingleTaskStage(taskId);
                    fixedSourcePartitionedScheduler.recover(taskId);
                });
            }
            return fixedSourcePartitionedScheduler;
        } else {
            // all sources are remote
            NodePartitionMap nodePartitionMap = partitioningCache.apply(plan.getFragment().getPartitioning());
            List<InternalNode> partitionToNode = nodePartitionMap.getPartitionToNode();
            // todo this should asynchronously wait a standard timeout period before failing
            checkCondition(!partitionToNode.isEmpty(), NO_NODES_AVAILABLE, "No worker nodes available");
            return new FixedCountScheduler(stageExecution, partitionToNode);
        }
    }
}

Example 2 with SCALED_WRITER_DISTRIBUTION

use of com.facebook.presto.sql.planner.SystemPartitioningHandle.SCALED_WRITER_DISTRIBUTION in project presto by prestodb.

the class LocalExecutionPlanner method createOutputPartitioning.

private Optional<OutputPartitioning> createOutputPartitioning(TaskContext taskContext, PartitioningScheme partitioningScheme) {
    if (partitioningScheme.getPartitioning().getHandle().equals(FIXED_BROADCAST_DISTRIBUTION) || partitioningScheme.getPartitioning().getHandle().equals(FIXED_ARBITRARY_DISTRIBUTION) || partitioningScheme.getPartitioning().getHandle().equals(SCALED_WRITER_DISTRIBUTION) || partitioningScheme.getPartitioning().getHandle().equals(SINGLE_DISTRIBUTION) || partitioningScheme.getPartitioning().getHandle().equals(COORDINATOR_DISTRIBUTION)) {
        return Optional.empty();
    }
    List<VariableReferenceExpression> outputLayout = partitioningScheme.getOutputLayout();
    // We can convert the variables directly into channels, because the root must be a sink and therefore the layout is fixed
    List<Integer> partitionChannels;
    List<Optional<ConstantExpression>> partitionConstants;
    List<Type> partitionChannelTypes;
    if (partitioningScheme.getHashColumn().isPresent()) {
        partitionChannels = ImmutableList.of(outputLayout.indexOf(partitioningScheme.getHashColumn().get()));
        partitionConstants = ImmutableList.of(Optional.empty());
        partitionChannelTypes = ImmutableList.of(BIGINT);
    } else {
        checkArgument(partitioningScheme.getPartitioning().getArguments().stream().allMatch(argument -> argument instanceof ConstantExpression || argument instanceof VariableReferenceExpression), format("Expect all partitioning arguments to be either ConstantExpression or VariableReferenceExpression, but get %s", partitioningScheme.getPartitioning().getArguments()));
        partitionChannels = partitioningScheme.getPartitioning().getArguments().stream().map(argument -> {
            if (argument instanceof ConstantExpression) {
                return -1;
            }
            return outputLayout.indexOf(argument);
        }).collect(toImmutableList());
        partitionConstants = partitioningScheme.getPartitioning().getArguments().stream().map(argument -> {
            if (argument instanceof ConstantExpression) {
                return Optional.of((ConstantExpression) argument);
            }
            return Optional.<ConstantExpression>empty();
        }).collect(toImmutableList());
        partitionChannelTypes = partitioningScheme.getPartitioning().getArguments().stream().map(RowExpression::getType).collect(toImmutableList());
    }
    PartitionFunction partitionFunction = nodePartitioningManager.getPartitionFunction(taskContext.getSession(), partitioningScheme, partitionChannelTypes);
    OptionalInt nullChannel = OptionalInt.empty();
    Set<VariableReferenceExpression> partitioningColumns = partitioningScheme.getPartitioning().getVariableReferences();
    // partitioningColumns expected to have one column in the normal case, and zero columns when partitioning on a constant
    checkArgument(!partitioningScheme.isReplicateNullsAndAny() || partitioningColumns.size() <= 1);
    if (partitioningScheme.isReplicateNullsAndAny() && partitioningColumns.size() == 1) {
        nullChannel = OptionalInt.of(outputLayout.indexOf(getOnlyElement(partitioningColumns)));
    }
    return Optional.of(new OutputPartitioning(partitionFunction, partitionChannels, partitionConstants, partitioningScheme.isReplicateNullsAndAny(), nullChannel));
}