How to use

median

method

in

org.apache.hadoop.hbase.client.coprocessor.AsyncAggregationClient

@Test
public void testMedian() throws InterruptedException, ExecutionException {
 long halfSum = COUNT * (COUNT - 1) / 4;
 long median = 0L;
 long sum = 0L;
 for (int i = 0; i < COUNT; i++) {
  sum += i;
  if (sum > halfSum) {
   median = i - 1;
   break;
  }
 }
 assertEquals(median,
  AsyncAggregationClient
    .median(TABLE, new LongColumnInterpreter(), new Scan().addColumn(CF, CQ)).get()
    .longValue());
}

 @Test
 public void testMedianWithWeight() throws InterruptedException, ExecutionException {
  long halfSum =
    LongStream.range(0, COUNT).map(l -> l * l).reduce((l1, l2) -> l1 + l2).getAsLong() / 2;
  long median = 0L;
  long sum = 0L;
  for (int i = 0; i < COUNT; i++) {
   sum += i * i;
   if (sum > halfSum) {
    median = i - 1;
    break;
   }
  }
  assertEquals(median, AsyncAggregationClient
    .median(TABLE, new LongColumnInterpreter(), new Scan().addColumn(CF, CQ).addColumn(CF, CQ2))
    .get().longValue());
 }
}

@Test
public void testMedian() throws InterruptedException, ExecutionException {
 long halfSum = COUNT * (COUNT - 1) / 4;
 long median = 0L;
 long sum = 0L;
 for (int i = 0; i < COUNT; i++) {
  sum += i;
  if (sum > halfSum) {
   median = i - 1;
   break;
  }
 }
 assertEquals(median,
  AsyncAggregationClient
    .median(TABLE, new LongColumnInterpreter(), new Scan().addColumn(CF, CQ)).get()
    .longValue());
}

@Test
public void testMedian() throws InterruptedException, ExecutionException {
 long halfSum = COUNT * (COUNT - 1) / 4;
 long median = 0L;
 long sum = 0L;
 for (int i = 0; i < COUNT; i++) {
  sum += i;
  if (sum > halfSum) {
   median = i - 1;
   break;
  }
 }
 assertEquals(median,
  AsyncAggregationClient
    .median(TABLE, new LongColumnInterpreter(), new Scan().addColumn(CF, CQ)).get()
    .longValue());
}

 @Test
 public void testMedianWithWeight() throws InterruptedException, ExecutionException {
  long halfSum =
    LongStream.range(0, COUNT).map(l -> l * l).reduce((l1, l2) -> l1 + l2).getAsLong() / 2;
  long median = 0L;
  long sum = 0L;
  for (int i = 0; i < COUNT; i++) {
   sum += i * i;
   if (sum > halfSum) {
    median = i - 1;
    break;
   }
  }
  assertEquals(median, AsyncAggregationClient
    .median(TABLE, new LongColumnInterpreter(), new Scan().addColumn(CF, CQ).addColumn(CF, CQ2))
    .get().longValue());
 }
}

 @Test
 public void testMedianWithWeight() throws InterruptedException, ExecutionException {
  long halfSum =
    LongStream.range(0, COUNT).map(l -> l * l).reduce((l1, l2) -> l1 + l2).getAsLong() / 2;
  long median = 0L;
  long sum = 0L;
  for (int i = 0; i < COUNT; i++) {
   sum += i * i;
   if (sum > halfSum) {
    median = i - 1;
    break;
   }
  }
  assertEquals(median, AsyncAggregationClient
    .median(TABLE, new LongColumnInterpreter(), new Scan().addColumn(CF, CQ).addColumn(CF, CQ2))
    .get().longValue());
 }
}