Examples with CoGroupDescriptor org.apache.flink.optimizer.operators.CoGroupDescriptor used on opensource projects

Example 1 with CoGroupDescriptor

use of org.apache.flink.optimizer.operators.CoGroupDescriptor in project flink by apache.

the class CoGroupNode method initializeDataProperties.

private List<OperatorDescriptorDual> initializeDataProperties(Partitioner<?> customPartitioner) {
    Ordering groupOrder1 = null;
    Ordering groupOrder2 = null;
    CoGroupOperatorBase<?, ?, ?, ?> cgc = getOperator();
    groupOrder1 = cgc.getGroupOrderForInputOne();
    groupOrder2 = cgc.getGroupOrderForInputTwo();
    if (groupOrder1 != null && groupOrder1.getNumberOfFields() == 0) {
        groupOrder1 = null;
    }
    if (groupOrder2 != null && groupOrder2.getNumberOfFields() == 0) {
        groupOrder2 = null;
    }
    CoGroupDescriptor descr = new CoGroupDescriptor(this.keys1, this.keys2, groupOrder1, groupOrder2);
    if (customPartitioner != null) {
        descr.setCustomPartitioner(customPartitioner);
    }
    return Collections.<OperatorDescriptorDual>singletonList(descr);
}