io.airlift.stats.cardinality.HllInstance Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.airlift.stats.cardinality;
import com.google.common.annotations.VisibleForTesting;
import io.airlift.slice.Slice;
interface HllInstance
{
void insertHash(long hash);
long cardinality();
int getIndexBitLength();
int estimatedInMemorySize();
int estimatedSerializedSize();
Slice serialize();
DenseHll toDense();
@VisibleForTesting
void verify();
}