Examples with HyperLogLog io.airlift.stats.cardinality.HyperLogLog used on opensource projects

Example 1 with HyperLogLog

use of io.airlift.stats.cardinality.HyperLogLog in project presto by prestodb.

the class CreateHll method createHll.

@ScalarFunction
@SqlType(StandardTypes.HYPER_LOG_LOG)
public static Slice createHll(@SqlType(StandardTypes.BIGINT) long value) {
    HyperLogLog hll = HyperLogLog.newInstance(4096);
    hll.add(value);
    return hll.serialize();
}

Example 2 with HyperLogLog

use of io.airlift.stats.cardinality.HyperLogLog in project presto by prestodb.

the class MergeHyperLogLogAggregation method input.

@InputFunction
public static void input(@AggregationState HyperLogLogState state, @SqlType(StandardTypes.HYPER_LOG_LOG) Slice value) {
    HyperLogLog input = HyperLogLog.newInstance(value);
    merge(state, input);
}

Example 3 with HyperLogLog

use of io.airlift.stats.cardinality.HyperLogLog in project presto by prestodb.

the class ApproximateSetAggregation method input.

@InputFunction
public static void input(@AggregationState HyperLogLogState state, @SqlType(StandardTypes.BIGINT) long value) {
    HyperLogLog hll = getOrCreateHyperLogLog(state);
    state.addMemoryUsage(-hll.estimatedInMemorySize());
    hll.add(value);
    state.addMemoryUsage(hll.estimatedInMemorySize());
}

Example 4 with HyperLogLog

use of io.airlift.stats.cardinality.HyperLogLog in project presto by prestodb.

the class ApproximateSetAggregation method input.

@InputFunction
@LiteralParameters("x")
public static void input(@AggregationState HyperLogLogState state, @SqlType("varchar(x)") Slice value) {
    HyperLogLog hll = getOrCreateHyperLogLog(state);
    state.addMemoryUsage(-hll.estimatedInMemorySize());
    hll.add(value);
    state.addMemoryUsage(hll.estimatedInMemorySize());
}

Example 5 with HyperLogLog

use of io.airlift.stats.cardinality.HyperLogLog in project presto by prestodb.

the class ApproximateSetAggregation method input.

@InputFunction
public static void input(@AggregationState HyperLogLogState state, @SqlType(StandardTypes.DOUBLE) double value) {
    HyperLogLog hll = getOrCreateHyperLogLog(state);
    state.addMemoryUsage(-hll.estimatedInMemorySize());
    hll.add(Double.doubleToLongBits(value));
    state.addMemoryUsage(hll.estimatedInMemorySize());
}