private void insert(TopKSampler<String> sampler) {
for (int i = 1; i <= 10; i++) {
for (int j = 0; j < i; j++) {
String key = "item" + i;
sampler.addSample(key, MurmurHash.hash64(key), 1);
}
}
}
@Test
public void testSamplerSingleInsertionsEqualMulti() throws TimeoutException {
TopKSampler<String> sampler = new TopKSampler<String>();
sampler.beginSampling(10);
insert(sampler);
waitForEmpty(1000);
SamplerResult single = sampler.finishSampling(10);
TopKSampler<String> sampler2 = new TopKSampler<String>();
sampler2.beginSampling(10);
for (int i = 1; i <= 10; i++) {
String key = "item" + i;
sampler2.addSample(key, MurmurHash.hash64(key), i);
}
waitForEmpty(1000);
Assert.assertEquals(countMap(single.topK), countMap(sampler2.finishSampling(10).topK));
Assert.assertEquals(sampler2.hll.cardinality(), 10);
Assert.assertEquals(sampler.hll.cardinality(), sampler2.hll.cardinality());
}
