| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.mapreduce;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.hadoop.mapreduce.Reducer;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>/**<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> * Extends the basic <code>Reducer</code> class to add the required key and value input/output<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> * classes. While the input key and value as well as the output key can be anything handed in from<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * the previous map phase the output value <u>must</u> be either a<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * {@link org.apache.hadoop.hbase.client.Put Put} or a {@link org.apache.hadoop.hbase.client.Delete<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * Delete} instance when using the {@link TableOutputFormat} class.<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * <p><a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * This class is extended by {@link IdentityTableReducer} but can also be subclassed to implement<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * similar features or any custom code needed. It has the advantage to enforce the output value to a<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * specific basic type.<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * @param <KEYIN> The type of the input key.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * @param <VALUEIN> The type of the input value.<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * @param <KEYOUT> The type of the output key.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * @see org.apache.hadoop.mapreduce.Reducer<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> */<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>@InterfaceAudience.Public<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>public abstract class TableReducer<KEYIN, VALUEIN, KEYOUT><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> extends Reducer<KEYIN, VALUEIN, KEYOUT, Mutation> {<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>}<a name="line.42"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
