コード例 #1
0
ファイル: LocalQueryRunner.java プロジェクト: posix4e/presto
 private Split getLocalQuerySplit(TableHandle tableHandle) {
   try {
     List<Partition> partitions =
         splitManager
             .getPartitions(tableHandle, Optional.<TupleDomain<ColumnHandle>>absent())
             .getPartitions();
     SplitSource splitSource = splitManager.getPartitionSplits(tableHandle, partitions);
     Split split = Iterables.getOnlyElement(splitSource.getNextBatch(1000));
     checkState(splitSource.isFinished(), "Expected only one split for a local query");
     return split;
   } catch (InterruptedException e) {
     Thread.currentThread().interrupt();
     throw Throwables.propagate(e);
   }
 }
コード例 #2
0
ファイル: LocalQueryRunner.java プロジェクト: posix4e/presto
  public List<Driver> createDrivers(
      @Language("SQL") String sql, OutputFactory outputFactory, TaskContext taskContext) {
    Statement statement = SqlParser.createStatement(sql);

    if (printPlan) {
      assertFormattedSql(statement);
    }

    PlanNodeIdAllocator idAllocator = new PlanNodeIdAllocator();
    FeaturesConfig featuresConfig = new FeaturesConfig().setExperimentalSyntaxEnabled(true);
    PlanOptimizersFactory planOptimizersFactory =
        new PlanOptimizersFactory(metadata, splitManager, indexManager, featuresConfig);

    QueryExplainer queryExplainer =
        new QueryExplainer(
            session,
            planOptimizersFactory.get(),
            metadata,
            featuresConfig.isExperimentalSyntaxEnabled());
    Analyzer analyzer =
        new Analyzer(
            session,
            metadata,
            Optional.of(queryExplainer),
            featuresConfig.isExperimentalSyntaxEnabled());

    Analysis analysis = analyzer.analyze(statement);

    Plan plan =
        new LogicalPlanner(session, planOptimizersFactory.get(), idAllocator, metadata)
            .plan(analysis);
    if (printPlan) {
      System.out.println(PlanPrinter.textLogicalPlan(plan.getRoot(), plan.getTypes(), metadata));
    }

    SubPlan subplan =
        new DistributedLogicalPlanner(session, metadata, idAllocator).createSubPlans(plan, true);
    assertTrue(subplan.getChildren().isEmpty(), "Expected subplan to have no children");

    LocalExecutionPlanner executionPlanner =
        new LocalExecutionPlanner(
            new NodeInfo(new NodeConfig().setEnvironment("test").setNodeId("test-node")),
            metadata,
            dataStreamProvider,
            indexManager,
            storageManager,
            recordSinkManager,
            null,
            compiler);

    // plan query
    LocalExecutionPlan localExecutionPlan =
        executionPlanner.plan(
            session, subplan.getFragment().getRoot(), plan.getTypes(), outputFactory);

    // generate sources
    List<TaskSource> sources = new ArrayList<>();
    long sequenceId = 0;
    for (PlanNode sourceNode : subplan.getFragment().getSources()) {
      if (sourceNode instanceof ValuesNode) {
        continue;
      }

      TableScanNode tableScan = (TableScanNode) sourceNode;

      SplitSource splitSource =
          splitManager.getPartitionSplits(tableScan.getTable(), getPartitions(tableScan));

      ImmutableSet.Builder<ScheduledSplit> scheduledSplits = ImmutableSet.builder();
      while (!splitSource.isFinished()) {
        try {
          for (Split split : splitSource.getNextBatch(1000)) {
            scheduledSplits.add(new ScheduledSplit(sequenceId++, split));
          }
        } catch (InterruptedException e) {
          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<>();
    for (DriverFactory driverFactory : localExecutionPlan.getDriverFactories()) {
      DriverContext driverContext =
          taskContext
              .addPipelineContext(driverFactory.isInputDriver(), driverFactory.isOutputDriver())
              .addDriverContext();
      Driver driver = driverFactory.createDriver(driverContext);
      drivers.add(driver);
      for (PlanNodeId sourceId : driver.getSourceIds()) {
        driversBySource.put(sourceId, driver);
      }
      driverFactory.close();
    }

    // add sources to the drivers
    for (TaskSource source : sources) {
      for (Driver driver : driversBySource.values()) {
        driver.updateSource(source);
      }
    }

    return ImmutableList.copyOf(drivers);
  }