Examples with Sessions org.apache.beam.sdk.transforms.windowing.Sessions used on opensource projects

Example 6 with Sessions

use of org.apache.beam.sdk.transforms.windowing.Sessions in project beam by apache.

the class FlinkReduceFunction method reduce.

@Override
public void reduce(Iterable<WindowedValue<KV<K, AccumT>>> elements, Collector<WindowedValue<KV<K, OutputT>>> out) throws Exception {
    PipelineOptions options = serializedOptions.get();
    FlinkSideInputReader sideInputReader = new FlinkSideInputReader(sideInputs, getRuntimeContext());
    AbstractFlinkCombineRunner<K, AccumT, AccumT, OutputT, W> reduceRunner;
    if (groupedByWindow) {
        reduceRunner = new SingleWindowFlinkCombineRunner<>();
    } else {
        if (windowingStrategy.needsMerge() && windowingStrategy.getWindowFn() instanceof Sessions) {
            reduceRunner = new SortingFlinkCombineRunner<>();
        } else {
            reduceRunner = new HashingFlinkCombineRunner<>();
        }
    }
    reduceRunner.combine(new AbstractFlinkCombineRunner.FinalFlinkCombiner<>(combineFn), windowingStrategy, sideInputReader, options, elements, out);
}