Example usage for com.google.common.collect ImmutableList of

Introduction

In this page you can find the example usage for com.google.common.collect ImmutableList of.

Prototype

public static <E> ImmutableList<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10) 

Source Link

Usage

From source file:io.prestosql.execution.executor.SplitGenerators.java

public static void main(String[] args) {
    Histogram<Long> bins = fromContinuous(ImmutableList.of(MILLISECONDS.toNanos(0), MILLISECONDS.toNanos(1),
            MILLISECONDS.toNanos(10), MILLISECONDS.toNanos(100), MILLISECONDS.toNanos(1_000),
            MILLISECONDS.toNanos(10_000), MILLISECONDS.toNanos(60_000), MILLISECONDS.toNanos(300_000),
            MINUTES.toNanos(20), DAYS.toNanos(1)));

    IntermediateSplitGenerator intermediateSplitGenerator = new IntermediateSplitGenerator(null);
    List<IntermediateSplitSpecification> intermediateSpecs = new ArrayList<>();
    for (int i = 0; i < 10_000; i++) {
        IntermediateSplitSpecification next = intermediateSplitGenerator.next();
        intermediateSpecs.add(next);//from   w w  w .  j  a  va  2s.co  m
    }

    System.out.println("Scheduled time distributions");
    System.out.println("============================");
    System.out.println();
    System.out.println("Tasks with 8x " + IntermediateSplitGenerator.class.getSimpleName());
    bins.printDistribution(intermediateSpecs, t -> t.getScheduledTimeNanos() * 8, a -> 1,
            Duration::succinctNanos, a -> "");

    List<SplitGenerator> leafSplitGenerators = ImmutableList.of(new FastLeafSplitGenerator(),
            new SlowLeafSplitGenerator(), new L4LeafSplitGenerator(), new QuantaExceedingSplitGenerator(),
            new AggregatedLeafSplitGenerator());

    for (SplitGenerator generator : leafSplitGenerators) {
        List<SplitSpecification> leafSpecs = new ArrayList<>();
        for (int i = 0; i < 17000; i++) {
            leafSpecs.add(generator.next());
        }

        System.out.println();
        System.out.println("Tasks with 4x " + generator.getClass().getSimpleName());
        bins.printDistribution(leafSpecs, t -> t.getScheduledTimeNanos() * 4, Duration::succinctNanos);

        System.out.println("Per quanta:");
        bins.printDistribution(leafSpecs, SplitSpecification::getPerQuantaNanos, Duration::succinctNanos);
    }
}

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