001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.io.hfile; 019 020import org.apache.hadoop.hbase.CellComparator; 021import org.apache.hadoop.hbase.util.BloomFilterBase; 022import org.apache.yetus.audience.InterfaceAudience; 023 024@InterfaceAudience.Private 025public class CompoundBloomFilterBase implements BloomFilterBase { 026 027 /** 028 * At read time, the total number of chunks. At write time, the number of chunks created so far. 029 * The first chunk has an ID of 0, and the current chunk has the ID of numChunks - 1. 030 */ 031 protected int numChunks; 032 033 /** 034 * The Bloom filter version. There used to be a DynamicByteBloomFilter which had version 2. 035 */ 036 public static final int VERSION = 3; 037 038 /** Target error rate for configuring the filter and for information */ 039 protected float errorRate; 040 041 /** The total number of keys in all chunks */ 042 protected long totalKeyCount; 043 protected long totalByteSize; 044 protected long totalMaxKeys; 045 046 /** Hash function type to use, as defined in {@link org.apache.hadoop.hbase.util.Hash} */ 047 protected int hashType; 048 /** Comparator used to compare Bloom filter keys */ 049 protected CellComparator comparator; 050 051 @Override 052 public long getMaxKeys() { 053 return totalMaxKeys; 054 } 055 056 @Override 057 public long getKeyCount() { 058 return totalKeyCount; 059 } 060 061 @Override 062 public long getByteSize() { 063 return totalByteSize; 064 } 065 066}