Examples with GatherTLink edu.iu.dsc.tws.tset.links.batch.GatherTLink used on opensource projects

Example 1 with GatherTLink

use of edu.iu.dsc.tws.tset.links.batch.GatherTLink in project twister2 by DSC-SPIDAL.

the class TSetGatherExample method execute.

@Override
public void execute(WorkerEnvironment workerEnv) {
    super.execute(workerEnv);
    BatchEnvironment env = TSetEnvironment.initBatch(workerEnv);
    // set the parallelism of source to task stage 0
    int srcPara = jobParameters.getTaskStages().get(0);
    int sinkPara = jobParameters.getTaskStages().get(1);
    SourceTSet<int[]> source = env.createSource(new TestBaseSource(), srcPara).setName("Source");
    GatherTLink<int[]> gather = source.gather();
    SinkTSet<Iterator<Tuple<Integer, int[]>>> sink = gather.sink((SinkFunc<Iterator<Tuple<Integer, int[]>>>) val -> {
        int[] value = null;
        while (val.hasNext()) {
            value = val.next().getValue();
        }
        experimentData.setOutput(value);
        LOG.info("Results " + Arrays.toString(value));
        try {
            verify(OperationNames.GATHER);
        } catch (VerificationException e) {
            LOG.info("Exception Message : " + e.getMessage());
        }
        return true;
    });
    env.run(sink);
}

Example 2 with GatherTLink

use of edu.iu.dsc.tws.tset.links.batch.GatherTLink in project twister2 by DSC-SPIDAL.

the class GatherExample method execute.

@Override
public void execute(WorkerEnvironment workerEnv) {
    BatchEnvironment env = TSetEnvironment.initBatch(workerEnv);
    int start = env.getWorkerID() * 100;
    SourceTSet<Integer> src = dummySource(env, start, COUNT, PARALLELISM);
    GatherTLink<Integer> gather = src.gather();
    LOG.info("test foreach");
    gather.forEach(i -> LOG.info("foreach: " + i));
    LOG.info("test map");
    gather.map(i -> i.toString() + "$$").withSchema(PrimitiveSchemas.STRING).direct().forEach(s -> LOG.info("map: " + s));
    LOG.info("test compute");
    gather.compute((ComputeFunc<Iterator<Tuple<Integer, Integer>>, String>) input -> {
        int sum = 0;
        while (input.hasNext()) {
            sum += input.next().getValue();
        }
        return "sum=" + sum;
    }).withSchema(PrimitiveSchemas.STRING).direct().forEach(s -> LOG.info("compute: " + s));
    LOG.info("test computec");
    gather.compute((ComputeCollectorFunc<Iterator<Tuple<Integer, Integer>>, String>) (input, output) -> {
        int sum = 0;
        while (input.hasNext()) {
            sum += input.next().getValue();
        }
        output.collect("sum=" + sum);
    }).withSchema(PrimitiveSchemas.STRING).direct().forEach(s -> LOG.info("computec: " + s));
    gather.mapToTuple(i -> new Tuple<>(i % 2, i)).keyedDirect().forEach(i -> LOG.info("mapToTuple: " + i.toString()));
}