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.regionserver; 019 020import java.nio.ByteBuffer; 021import org.apache.hadoop.hbase.ByteBufferKeyValue; 022import org.apache.hadoop.hbase.util.ByteBufferUtils; 023import org.apache.yetus.audience.InterfaceAudience; 024 025/** 026 * ByteBuffer based cell which has the chunkid at the 0th offset 027 * @see MemStoreLAB 028 */ 029// TODO : When moving this cell to CellChunkMap we will have the following things 030// to be serialized 031// chunkId (Integer) + offset (Integer) + length (Integer) + seqId (Long) = 20 bytes 032@InterfaceAudience.Private 033public class ByteBufferChunkKeyValue extends ByteBufferKeyValue { 034 public ByteBufferChunkKeyValue(ByteBuffer buf, int offset, int length) { 035 super(buf, offset, length); 036 } 037 038 public ByteBufferChunkKeyValue(ByteBuffer buf, int offset, int length, long seqId) { 039 super(buf, offset, length, seqId); 040 } 041 042 @Override 043 public int getChunkId() { 044 // The chunkId is embedded at the 0th offset of the bytebuffer 045 return ByteBufferUtils.toInt(buf, 0); 046 } 047}