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Subject [03/32] hbase-site git commit: Published site at 82d554e3783372cc6b05489452c815b57c06f6cd.
Date Fri, 02 Jun 2017 15:00:04 GMT
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-<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 or more contributor license<a name="line.2"></a>
-<span class="sourceLineNo">003</span> * agreements. See the NOTICE file distributed with this work for additional information regarding<a name="line.3"></a>
-<span class="sourceLineNo">004</span> * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the<a name="line.4"></a>
-<span class="sourceLineNo">005</span> * "License"); you may not use this file except in compliance with the License. You may obtain a<a name="line.5"></a>
-<span class="sourceLineNo">006</span> * copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable<a name="line.6"></a>
-<span class="sourceLineNo">007</span> * law or agreed to in writing, software distributed under the License is distributed on an "AS IS"<a name="line.7"></a>
-<span class="sourceLineNo">008</span> * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License<a name="line.8"></a>
-<span class="sourceLineNo">009</span> * for the specific language governing permissions and limitations under the License.<a name="line.9"></a>
-<span class="sourceLineNo">010</span> */<a name="line.10"></a>
-<span class="sourceLineNo">011</span>package org.apache.hadoop.hbase.mapreduce;<a name="line.11"></a>
-<span class="sourceLineNo">012</span><a name="line.12"></a>
-<span class="sourceLineNo">013</span>import static org.junit.Assert.assertTrue;<a name="line.13"></a>
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-<span class="sourceLineNo">021</span>import org.apache.commons.logging.Log;<a name="line.21"></a>
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-<span class="sourceLineNo">023</span>import org.apache.hadoop.conf.Configuration;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import org.apache.hadoop.fs.FileStatus;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import org.apache.hadoop.fs.FileSystem;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import org.apache.hadoop.fs.Path;<a name="line.26"></a>
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-<span class="sourceLineNo">033</span>import org.apache.hadoop.mapred.FileOutputCommitter;<a name="line.33"></a>
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-<span class="sourceLineNo">003</span> * agreements. See the NOTICE file distributed with this work for additional information regarding<a name="line.3"></a>
-<span class="sourceLineNo">004</span> * copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the<a name="line.4"></a>
-<span class="sourceLineNo">005</span> * "License"); you may not use this file except in compliance with the License. You may obtain a<a name="line.5"></a>
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-<span class="sourceLineNo">008</span> * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License<a name="line.8"></a>
-<span class="sourceLineNo">009</span> * for the specific language governing permissions and limitations under the License.<a name="line.9"></a>
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-<span class="sourceLineNo">063</span>    private static final byte[][] FAMILIES =<a name="line.63"></a>
-<span class="sourceLineNo">064</span>        { Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-A")),<a name="line.64"></a>
-<span class="sourceLineNo">065</span>            Bytes.add(PerformanceEvaluation.FAMILY_NAME, Bytes.toBytes("-B")) };<a name="line.65"></a>
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-<span class="sourceLineNo">067</span>    private static final byte[] QUALIFIER = Bytes.toBytes("data");<a name="line.67"></a>
-<span class="sourceLineNo">068</span><a name="line.68"></a>
-<span class="sourceLineNo">069</span>    public static void main(String[] args) throws Exception {<a name="line.69"></a>
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-<span class="sourceLineNo">074</span>     * Run small MR job. this MR job will write HFile into<a name="line.74"></a>
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-<span class="sourceLineNo">084</span><a name="line.84"></a>
-<span class="sourceLineNo">085</span>        // Set down this value or we OOME in eclipse.<a name="line.85"></a>
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-<span class="sourceLineNo">093</span>            FileOutputFormat.setOutputPath(job, testDir);<a name="line.93"></a>
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-<span class="sourceLineNo">101</span>            job.getConfiguration().setStrings("io.serializations", conf.get("io.serializations"),<a name="line.101"></a>
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-<span class="sourceLineNo">103</span>                KeyValueSerialization.class.getName());<a name="line.103"></a>
-<span class="sourceLineNo">104</span><a name="line.104"></a>
-<span class="sourceLineNo">105</span>            TableMapReduceUtil.addDependencyJars(job);<a name="line.105"></a>
-<span class="sourceLineNo">106</span>            TableMapReduceUtil.initCredentials(job);<a name="line.106"></a>
-<span class="sourceLineNo">107</span>            LOG.info("\nStarting test testWritingDataIntoHFiles\n");<a name="line.107"></a>
-<span class="sourceLineNo">108</span>            assertTrue(job.waitForCompletion(true));<a name="line.108"></a>
-<span class="sourceLineNo">109</span>            LOG.info("\nWaiting on checking MapReduce output\n");<a name="line.109"></a>
-<span class="sourceLineNo">110</span>            assertTrue(checkMROutput(fs, testDir, 0));<a name="line.110"></a>
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-<span class="sourceLineNo">113</span>            util.shutdownMiniCluster();<a name="line.113"></a>
-<span class="sourceLineNo">114</span>        }<a name="line.114"></a>
-<span class="sourceLineNo">115</span>    }<a name="line.115"></a>
-<span class="sourceLineNo">116</span><a name="line.116"></a>
-<span class="sourceLineNo">117</span>    /**<a name="line.117"></a>
-<span class="sourceLineNo">118</span>     * MR will output a 3 level directory, tableName-&gt;ColumnFamilyName-&gt;HFile this method to check the<a name="line.118"></a>
-<span class="sourceLineNo">119</span>     * created directory is correct or not A recursion method, the testDir had better be small size<a name="line.119"></a>
-<span class="sourceLineNo">120</span>     */<a name="line.120"></a>
-<span class="sourceLineNo">121</span>    private boolean checkMROutput(FileSystem fs, Path testDir, int level)<a name="line.121"></a>
-<span class="sourceLineNo">122</span>        throws FileNotFoundException, IOException {<a name="line.122"></a>
-<span class="sourceLineNo">123</span>        if (level &gt;= 3) {<a name="line.123"></a>
-<span class="sourceLineNo">124</span>            return HFile.isHFileFormat(fs, testDir);<a name="line.124"></a>
-<span class="sourceLineNo">125</span>        }<a name="line.125"></a>
-<span class="sourceLineNo">126</span>        FileStatus[] fStats = fs.listStatus(testDir);<a name="line.126"></a>
-<span class="sourceLineNo">127</span>        if (fStats == null || fStats.length &lt;= 0) {<a name="line.127"></a>
-<span class="sourceLineNo">128</span>            LOG.info("Created directory format is not correct");<a name="line.128"></a>
-<span class="sourceLineNo">129</span>            return false;<a name="line.129"></a>
-<span class="sourceLineNo">130</span>        }<a name="line.130"></a>
-<span class="sourceLineNo">131</span><a name="line.131"></a>
-<span class="sourceLineNo">132</span>        for (FileStatus stats : fStats) {<a name="line.132"></a>
-<span class="sourceLineNo">133</span>            // skip the _SUCCESS file created by MapReduce<a name="line.133"></a>
-<span class="sourceLineNo">134</span>            if (level == 0 &amp;&amp; stats.getPath().getName().endsWith(FileOutputCommitter.SUCCEEDED_FILE_NAME))<a name="line.134"></a>
-<span class="sourceLineNo">135</span>                continue;<a name="line.135"></a>
-<span class="sourceLineNo">136</span>            if (level &lt; 2 &amp;&amp; !stats.isDirectory()) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span>                LOG.info("Created directory format is not correct");<a name="line.137"></a>
-<span class="sourceLineNo">138</span>                return false;<a name="line.138"></a>
-<span class="sourceLineNo">139</span>            }<a name="line.139"></a>
-<span class="sourceLineNo">140</span>            boolean flag = checkMROutput(fs, stats.getPath(), level + 1);<a name="line.140"></a>
-<span class="sourceLineNo">141</span>            if (flag == false) return false;<a name="line.141"></a>
-<span class="sourceLineNo">142</span>        }<a name="line.142"></a>
-<span class="sourceLineNo">143</span>        return true;<a name="line.143"></a>
-<span class="sourceLineNo">144</span>    }<a name="line.144"></a>
-<span class="sourceLineNo">145</span><a name="line.145"></a>
-<span class="sourceLineNo">146</span>    /**<a name="line.146"></a>
-<span class="sourceLineNo">147</span>     * Simple mapper that makes &lt;TableName, KeyValue&gt; output. With no input data<a name="line.147"></a>
-<span class="sourceLineNo">148</span>     */<a name="line.148"></a>
-<span class="sourceLineNo">149</span>    static class Random_TableKV_GeneratingMapper<a name="line.149"></a>
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-<span class="sourceLineNo">151</span><a name="line.151"></a>
-<span class="sourceLineNo">152</span>        private int keyLength;<a name="line.152"></a>
-<span class="sourceLineNo">153</span>        private int valLength;<a name="line.153"></a>
-<span class="sourceLineNo">154</span><a name="line.154"></a>
-<span class="sourceLineNo">155</span>        @Override<a name="line.155"></a>
-<span class="sourceLineNo">156</span>        protected void setup(Context context) throws IOException, InterruptedException {<a name="line.156"></a>
-<span class="sourceLineNo">157</span>            super.setup(context);<a name="line.157"></a>
-<span class="sourceLineNo">158</span><a name="line.158"></a>
-<span class="sourceLineNo">159</span>            Configuration conf = context.getConfiguration();<a name="line.159"></a>
-<span class="sourceLineNo">160</span>            keyLength = conf.getInt(KEYLEN_CONF, KEYLEN_DEFAULT);<a name="line.160"></a>
-<span class="sourceLineNo">161</span>            valLength = conf.getInt(VALLEN_CONF, VALLEN_DEFAULT);<a name="line.161"></a>
-<span class="sourceLineNo">162</span>        }<a name="line.162"></a>
-<span class="sourceLineNo">163</span><a name="line.163"></a>
-<span class="sourceLineNo">164</span>        @Override<a name="line.164"></a>
-<span class="sourceLineNo">165</span>        protected void map(NullWritable n1, NullWritable n2,<a name="line.165"></a>
-<span class="sourceLineNo">166</span>            Mapper&lt;NullWritable, NullWritable, ImmutableBytesWritable, Cell&gt;.Context context)<a name="line.166"></a>
-<span class="sourceLineNo">167</span>            throws java.io.IOException, InterruptedException {<a name="line.167"></a>
-<span class="sourceLineNo">168</span><a name="line.168"></a>
-<span class="sourceLineNo">169</span>            byte keyBytes[] = new byte[keyLength];<a name="line.169"></a>
-<span class="sourceLineNo">170</span>            byte valBytes[] = new byte[valLength];<a name="line.170"></a>
-<span class="sourceLineNo">171</span><a name="line.171"></a>
-<span class="sourceLineNo">172</span>            ArrayList&lt;ImmutableBytesWritable&gt; tables = new ArrayList&lt;&gt;();<a name="line.172"></a>
-<span class="sourceLineNo">173</span>            for (int i = 0; i &lt; TABLES.length; i++) {<a name="line.173"></a>
-<span class="sourceLineNo">174</span>                tables.add(new ImmutableBytesWritable(TABLES[i]));<a name="line.174"></a>
-<span class="sourceLineNo">175</span>            }<a name="line.175"></a>
-<span class="sourceLineNo">176</span><a name="line.176"></a>
-<span class="sourceLineNo">177</span>            int taskId = context.getTaskAttemptID().getTaskID().getId();<a name="line.177"></a>
-<span class="sourceLineNo">178</span>            assert taskId &lt; Byte.MAX_VALUE : "Unit tests dont support &gt; 127 tasks!";<a name="line.178"></a>
-<span class="sourceLineNo">179</span>            Random random = new Random();<a name="line.179"></a>
-<span class="sourceLineNo">180</span><a name="line.180"></a>
-<span class="sourceLineNo">181</span>            for (int i = 0; i &lt; ROWSPERSPLIT; i++) {<a name="line.181"></a>
-<span class="sourceLineNo">182</span>                random.nextBytes(keyBytes);<a name="line.182"></a>
-<span class="sourceLineNo">183</span>                // Ensure that unique tasks generate unique keys<a name="line.183"></a>
-<span class="sourceLineNo">184</span>                keyBytes[keyLength - 1] = (byte) (taskId &amp; 0xFF);<a name="line.184"></a>
-<span class="sourceLineNo">185</span>                random.nextBytes(valBytes);<a name="line.185"></a>
-<span class="sourceLineNo">186</span><a name="line.186"></a>
-<span class="sourceLineNo">187</span>                for (ImmutableBytesWritable table : tables) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span>                    for (byte[] family : FAMILIES) {<a name="line.188"></a>
-<span class="sourceLineNo">189</span>                        Cell kv = new KeyValue(keyBytes, family, QUALIFIER, valBytes);<a name="line.189"></a>
-<span class="sourceLineNo">190</span>                        context.write(table, kv);<a name="line.190"></a>
-<span class="sourceLineNo">191</span>                    }<a name="line.191"></a>
-<span class="sourceLineNo">192</span>                }<a name="line.192"></a>
-<span class="sourceLineNo">193</span>            }<a name="line.193"></a>
-<span class="sourceLineNo">194</span>        }<a name="line.194"></a>
-<span class="sourceLineNo">195</span>    }<a name="line.195"></a>
-<span class="sourceLineNo">196</span><a name="line.196"></a>
-<span class="sourceLineNo">197</span>    /**<a name="line.197"></a>
-<span class="sourceLineNo">198</span>     * Simple Reducer that have input &lt;TableName, KeyValue&gt;, with KeyValues have no order. and output<a name="line.198"></a>
-<span class="sourceLineNo">199</span>     * &lt;TableName, KeyValue&gt;, with KeyValues are ordered<a name="line.199"></a>
-<span class="sourceLineNo">200</span>     */<a name="line.200"></a>
-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span>    static class Table_KeyValueSortReducer<a name="line.202"></a>
-<span class="sourceLineNo">203</span>        extends Reducer&lt;ImmutableBytesWritable, KeyValue, ImmutableBytesWritable, KeyValue&gt; {<a name="line.203"></a>
-<span class="sourceLineNo">204</span>        protected void reduce(ImmutableBytesWritable table, java.lang.Iterable&lt;KeyValue&gt; kvs,<a name="line.204"></a>
-<span class="sourceLineNo">205</span>            org.apache.hadoop.mapreduce.Reducer&lt;ImmutableBytesWritable, KeyValue, ImmutableBytesWritable, KeyValue&gt;.Context context)<a name="line.205"></a>
-<span class="sourceLineNo">206</span>            throws java.io.IOException, InterruptedException {<a name="line.206"></a>
-<span class="sourceLineNo">207</span>            TreeSet&lt;KeyValue&gt; map = new TreeSet&lt;&gt;(KeyValue.COMPARATOR);<a name="line.207"></a>
-<span class="sourceLineNo">208</span>            for (KeyValue kv : kvs) {<a name="line.208"></a>
-<span class="sourceLineNo">209</span>                try {<a name="line.209"></a>
-<span class="sourceLineNo">210</span>                    map.add(kv.clone());<a name="line.210"></a>
-<span class="sourceLineNo">211</span>                } catch (CloneNotSupportedException e) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span>                    throw new java.io.IOException(e);<a name="line.212"></a>
-<span class="sourceLineNo">213</span>                }<a name="line.213"></a>
-<span class="sourceLineNo">214</span>            }<a name="line.214"></a>
-<span class="sourceLineNo">215</span>            context.setStatus("Read " + map.getClass());<a name="line.215"></a>
-<span class="sourceLineNo">216</span>            int index = 0;<a name="line.216"></a>
-<span class="sourceLineNo">217</span>            for (KeyValue kv : map) {<a name="line.217"></a>
-<span class="sourceLineNo">218</span>                context.write(table, kv);<a name="line.218"></a>
-<span class="sourceLineNo">219</span>                if (++index % 100 == 0) context.setStatus("Wrote " + index);<a name="line.219"></a>
-<span class="sourceLineNo">220</span>            }<a name="line.220"></a>
-<span class="sourceLineNo">221</span>        }<a name="line.221"></a>
-<span class="sourceLineNo">222</span>    }<a name="line.222"></a>
-<span class="sourceLineNo">223</span><a name="line.223"></a>
-<span class="sourceLineNo">224</span>}<a name="line.224"></a>
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