Examples with DualInputOperator org.apache.flink.api.common.operators.DualInputOperator used on opensource projects

Example 1 with DualInputOperator

use of org.apache.flink.api.common.operators.DualInputOperator in project flink by apache.

the class JavaApiPostPass method traverse.

protected void traverse(PlanNode node) {
    if (!alreadyDone.add(node)) {
        // already worked on that one
        return;
    }
    // distinguish the node types
    if (node instanceof SinkPlanNode) {
        // descend to the input channel
        SinkPlanNode sn = (SinkPlanNode) node;
        Channel inchannel = sn.getInput();
        traverseChannel(inchannel);
    } else if (node instanceof SourcePlanNode) {
        TypeInformation<?> typeInfo = getTypeInfoFromSource((SourcePlanNode) node);
        ((SourcePlanNode) node).setSerializer(createSerializer(typeInfo));
    } else if (node instanceof BulkIterationPlanNode) {
        BulkIterationPlanNode iterationNode = (BulkIterationPlanNode) node;
        if (iterationNode.getRootOfStepFunction() instanceof NAryUnionPlanNode) {
            throw new CompilerException("Optimizer cannot compile an iteration step function where next partial solution is created by a Union node.");
        }
        // utilities. Needed in case of intermediate termination criterion
        if (iterationNode.getRootOfTerminationCriterion() != null) {
            SingleInputPlanNode addMapper = (SingleInputPlanNode) iterationNode.getRootOfTerminationCriterion();
            traverseChannel(addMapper.getInput());
        }
        BulkIterationBase<?> operator = (BulkIterationBase<?>) iterationNode.getProgramOperator();
        // set the serializer
        iterationNode.setSerializerForIterationChannel(createSerializer(operator.getOperatorInfo().getOutputType()));
        // done, we can now propagate our info down
        traverseChannel(iterationNode.getInput());
        traverse(iterationNode.getRootOfStepFunction());
    } else if (node instanceof WorksetIterationPlanNode) {
        WorksetIterationPlanNode iterationNode = (WorksetIterationPlanNode) node;
        if (iterationNode.getNextWorkSetPlanNode() instanceof NAryUnionPlanNode) {
            throw new CompilerException("Optimizer cannot compile a workset iteration step function where the next workset is produced by a Union node.");
        }
        if (iterationNode.getSolutionSetDeltaPlanNode() instanceof NAryUnionPlanNode) {
            throw new CompilerException("Optimizer cannot compile a workset iteration step function where the solution set delta is produced by a Union node.");
        }
        DeltaIterationBase<?, ?> operator = (DeltaIterationBase<?, ?>) iterationNode.getProgramOperator();
        // set the serializers and comparators for the workset iteration
        iterationNode.setSolutionSetSerializer(createSerializer(operator.getOperatorInfo().getFirstInputType()));
        iterationNode.setWorksetSerializer(createSerializer(operator.getOperatorInfo().getSecondInputType()));
        iterationNode.setSolutionSetComparator(createComparator(operator.getOperatorInfo().getFirstInputType(), iterationNode.getSolutionSetKeyFields(), getSortOrders(iterationNode.getSolutionSetKeyFields(), null)));
        // traverse the inputs
        traverseChannel(iterationNode.getInput1());
        traverseChannel(iterationNode.getInput2());
        // traverse the step function
        traverse(iterationNode.getSolutionSetDeltaPlanNode());
        traverse(iterationNode.getNextWorkSetPlanNode());
    } else if (node instanceof SingleInputPlanNode) {
        SingleInputPlanNode sn = (SingleInputPlanNode) node;
        if (!(sn.getOptimizerNode().getOperator() instanceof SingleInputOperator)) {
            // Special case for delta iterations
            if (sn.getOptimizerNode().getOperator() instanceof NoOpUnaryUdfOp) {
                traverseChannel(sn.getInput());
                return;
            } else {
                throw new RuntimeException("Wrong operator type found in post pass.");
            }
        }
        SingleInputOperator<?, ?, ?> singleInputOperator = (SingleInputOperator<?, ?, ?>) sn.getOptimizerNode().getOperator();
        // parameterize the node's driver strategy
        for (int i = 0; i < sn.getDriverStrategy().getNumRequiredComparators(); i++) {
            sn.setComparator(createComparator(singleInputOperator.getOperatorInfo().getInputType(), sn.getKeys(i), getSortOrders(sn.getKeys(i), sn.getSortOrders(i))), i);
        }
        // done, we can now propagate our info down
        traverseChannel(sn.getInput());
        // don't forget the broadcast inputs
        for (Channel c : sn.getBroadcastInputs()) {
            traverseChannel(c);
        }
    } else if (node instanceof DualInputPlanNode) {
        DualInputPlanNode dn = (DualInputPlanNode) node;
        if (!(dn.getOptimizerNode().getOperator() instanceof DualInputOperator)) {
            throw new RuntimeException("Wrong operator type found in post pass.");
        }
        DualInputOperator<?, ?, ?, ?> dualInputOperator = (DualInputOperator<?, ?, ?, ?>) dn.getOptimizerNode().getOperator();
        // parameterize the node's driver strategy
        if (dn.getDriverStrategy().getNumRequiredComparators() > 0) {
            dn.setComparator1(createComparator(dualInputOperator.getOperatorInfo().getFirstInputType(), dn.getKeysForInput1(), getSortOrders(dn.getKeysForInput1(), dn.getSortOrders())));
            dn.setComparator2(createComparator(dualInputOperator.getOperatorInfo().getSecondInputType(), dn.getKeysForInput2(), getSortOrders(dn.getKeysForInput2(), dn.getSortOrders())));
            dn.setPairComparator(createPairComparator(dualInputOperator.getOperatorInfo().getFirstInputType(), dualInputOperator.getOperatorInfo().getSecondInputType()));
        }
        traverseChannel(dn.getInput1());
        traverseChannel(dn.getInput2());
        // don't forget the broadcast inputs
        for (Channel c : dn.getBroadcastInputs()) {
            traverseChannel(c);
        }
    } else // catch the sources of the iterative step functions
    if (node instanceof BulkPartialSolutionPlanNode || node instanceof SolutionSetPlanNode || node instanceof WorksetPlanNode) {
    // Do nothing :D
    } else if (node instanceof NAryUnionPlanNode) {
        // Traverse to all child channels
        for (Channel channel : node.getInputs()) {
            traverseChannel(channel);
        }
    } else {
        throw new CompilerPostPassException("Unknown node type encountered: " + node.getClass().getName());
    }
}

Example 2 with DualInputOperator

use of org.apache.flink.api.common.operators.DualInputOperator in project flink by apache.

the class CoGroupNode method getSemanticPropertiesForLocalPropertyFiltering.

@Override
protected SemanticProperties getSemanticPropertiesForLocalPropertyFiltering() {
    // Local properties for CoGroup may only be preserved on key fields.
    DualInputSemanticProperties origProps = ((DualInputOperator<?, ?, ?, ?>) getOperator()).getSemanticProperties();
    DualInputSemanticProperties filteredProps = new DualInputSemanticProperties();
    FieldSet readSet1 = origProps.getReadFields(0);
    FieldSet readSet2 = origProps.getReadFields(1);
    if (readSet1 != null) {
        filteredProps.addReadFields(0, readSet1);
    }
    if (readSet2 != null) {
        filteredProps.addReadFields(1, readSet2);
    }
    // preserve only key fields (first input)
    for (int f : this.keys1) {
        FieldSet targets = origProps.getForwardingTargetFields(0, f);
        for (int t : targets) {
            filteredProps.addForwardedField(0, f, t);
        }
    }
    // preserve only key fields (second input)
    for (int f : this.keys2) {
        FieldSet targets = origProps.getForwardingTargetFields(1, f);
        for (int t : targets) {
            filteredProps.addForwardedField(1, f, t);
        }
    }
    return filteredProps;
}