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.util; 019 020import org.apache.hadoop.hbase.Cell; 021import org.apache.hadoop.hbase.HConstants; 022import org.apache.hadoop.hbase.KeyValue; 023import org.apache.yetus.audience.InterfaceAudience; 024 025/** 026 * Extracts the byte for the hash calculation from the given cell 027 */ 028@InterfaceAudience.Private 029public abstract class CellHashKey extends HashKey<Cell> { 030 031 protected static final byte[] LATEST_TS = Bytes.toBytes(HConstants.LATEST_TIMESTAMP); 032 protected static final byte MAX_TYPE = KeyValue.Type.Maximum.getCode(); 033 034 public CellHashKey(Cell cell) { 035 super(cell); 036 } 037}