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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.mapreduce;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.DataInputStream;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.DataOutputStream;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.io.InputStream;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.io.OutputStream;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.ExtendedCell;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.KeyValue;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.KeyValueUtil;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.PrivateCellUtil;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.io.serializer.Deserializer;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.io.serializer.Serialization;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.io.serializer.Serializer;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35">/**</span> |
| <span class="source-line-no">036</span><span id="line-36"> * Similar to CellSerialization, but includes the sequenceId from an ExtendedCell. This is necessary</span> |
| <span class="source-line-no">037</span><span id="line-37"> * so that CellSortReducer can sort by sequenceId, if applicable. Note that these two serializations</span> |
| <span class="source-line-no">038</span><span id="line-38"> * are not compatible -- data serialized by CellSerialization cannot be deserialized with</span> |
| <span class="source-line-no">039</span><span id="line-39"> * ExtendedCellSerialization and vice versa. This is ok for {@link HFileOutputFormat2} because the</span> |
| <span class="source-line-no">040</span><span id="line-40"> * serialization is not actually used for the actual written HFiles, just intermediate data (between</span> |
| <span class="source-line-no">041</span><span id="line-41"> * mapper and reducer of a single job).</span> |
| <span class="source-line-no">042</span><span id="line-42"> */</span> |
| <span class="source-line-no">043</span><span id="line-43">@InterfaceAudience.Private</span> |
| <span class="source-line-no">044</span><span id="line-44">public class ExtendedCellSerialization implements Serialization<ExtendedCell> {</span> |
| <span class="source-line-no">045</span><span id="line-45"> @Override</span> |
| <span class="source-line-no">046</span><span id="line-46"> public boolean accept(Class<?> c) {</span> |
| <span class="source-line-no">047</span><span id="line-47"> return ExtendedCell.class.isAssignableFrom(c);</span> |
| <span class="source-line-no">048</span><span id="line-48"> }</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> @Override</span> |
| <span class="source-line-no">051</span><span id="line-51"> public ExtendedCellDeserializer getDeserializer(Class<ExtendedCell> t) {</span> |
| <span class="source-line-no">052</span><span id="line-52"> return new ExtendedCellDeserializer();</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> @Override</span> |
| <span class="source-line-no">056</span><span id="line-56"> public ExtendedCellSerializer getSerializer(Class<ExtendedCell> c) {</span> |
| <span class="source-line-no">057</span><span id="line-57"> return new ExtendedCellSerializer();</span> |
| <span class="source-line-no">058</span><span id="line-58"> }</span> |
| <span class="source-line-no">059</span><span id="line-59"></span> |
| <span class="source-line-no">060</span><span id="line-60"> public static class ExtendedCellDeserializer implements Deserializer<ExtendedCell> {</span> |
| <span class="source-line-no">061</span><span id="line-61"> private DataInputStream dis;</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> @Override</span> |
| <span class="source-line-no">064</span><span id="line-64"> public void close() throws IOException {</span> |
| <span class="source-line-no">065</span><span id="line-65"> this.dis.close();</span> |
| <span class="source-line-no">066</span><span id="line-66"> }</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> @Override</span> |
| <span class="source-line-no">069</span><span id="line-69"> public KeyValue deserialize(ExtendedCell ignore) throws IOException {</span> |
| <span class="source-line-no">070</span><span id="line-70"> KeyValue kv = KeyValueUtil.create(this.dis);</span> |
| <span class="source-line-no">071</span><span id="line-71"> PrivateCellUtil.setSequenceId(kv, this.dis.readLong());</span> |
| <span class="source-line-no">072</span><span id="line-72"> return kv;</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> @Override</span> |
| <span class="source-line-no">076</span><span id="line-76"> public void open(InputStream is) throws IOException {</span> |
| <span class="source-line-no">077</span><span id="line-77"> this.dis = new DataInputStream(is);</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> public static class ExtendedCellSerializer implements Serializer<ExtendedCell> {</span> |
| <span class="source-line-no">082</span><span id="line-82"> private DataOutputStream dos;</span> |
| <span class="source-line-no">083</span><span id="line-83"></span> |
| <span class="source-line-no">084</span><span id="line-84"> @Override</span> |
| <span class="source-line-no">085</span><span id="line-85"> public void close() throws IOException {</span> |
| <span class="source-line-no">086</span><span id="line-86"> this.dos.close();</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88"></span> |
| <span class="source-line-no">089</span><span id="line-89"> @Override</span> |
| <span class="source-line-no">090</span><span id="line-90"> public void open(OutputStream os) throws IOException {</span> |
| <span class="source-line-no">091</span><span id="line-91"> this.dos = new DataOutputStream(os);</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> @Override</span> |
| <span class="source-line-no">095</span><span id="line-95"> public void serialize(ExtendedCell kv) throws IOException {</span> |
| <span class="source-line-no">096</span><span id="line-96"> dos.writeInt(PrivateCellUtil.estimatedSerializedSizeOf(kv) - Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">097</span><span id="line-97"> kv.write(dos, true);</span> |
| <span class="source-line-no">098</span><span id="line-98"> dos.writeLong(kv.getSequenceId());</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101">}</span> |
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| </pre> |
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