Repository: hbase-site Updated Branches: refs/heads/asf-site 80faeee01 -> 8e0a51670
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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><a name="line.18"></a> +<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.master.balancer;<a name="line.19"></a> +<span class="sourceLineNo">020</span><a name="line.20"></a> +<span class="sourceLineNo">021</span>import com.google.common.base.Preconditions;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import com.google.common.base.Stopwatch;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import org.apache.commons.cli.CommandLine;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import org.apache.commons.cli.Option;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import org.apache.commons.logging.Log;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import org.apache.commons.logging.LogFactory;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.HBaseCommonTestingUtility;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.HConstants;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.ServerName;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.TableName;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.AbstractHBaseTool;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.36"></a> +<span class="sourceLineNo">037</span><a name="line.37"></a> +<span class="sourceLineNo">038</span>import java.io.IOException;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import java.util.ArrayList;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import java.util.Collections;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import java.util.HashMap;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import java.util.List;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import java.util.Map;<a name="line.43"></a> +<span class="sourceLineNo">044</span><a name="line.44"></a> +<span class="sourceLineNo">045</span>/**<a name="line.45"></a> +<span class="sourceLineNo">046</span> * Tool to test performance of different {@link org.apache.hadoop.hbase.master.LoadBalancer}<a name="line.46"></a> +<span class="sourceLineNo">047</span> * implementations.<a name="line.47"></a> +<span class="sourceLineNo">048</span> * Example command:<a name="line.48"></a> +<span class="sourceLineNo">049</span> * $ bin/hbase org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation<a name="line.49"></a> +<span class="sourceLineNo">050</span> * -regions 1000 -servers 100<a name="line.50"></a> +<span class="sourceLineNo">051</span> * -load_balancer org.apache.hadoop.hbase.master.balancer.SimpleLoadBalancer<a name="line.51"></a> +<span class="sourceLineNo">052</span> */<a name="line.52"></a> +<span class="sourceLineNo">053</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)<a name="line.53"></a> +<span class="sourceLineNo">054</span>public class LoadBalancerPerformanceEvaluation extends AbstractHBaseTool {<a name="line.54"></a> +<span class="sourceLineNo">055</span> private static final Log LOG =<a name="line.55"></a> +<span class="sourceLineNo">056</span> LogFactory.getLog(LoadBalancerPerformanceEvaluation.class.getName());<a name="line.56"></a> +<span class="sourceLineNo">057</span><a name="line.57"></a> +<span class="sourceLineNo">058</span> protected static final HBaseCommonTestingUtility UTIL = new HBaseCommonTestingUtility();<a name="line.58"></a> +<span class="sourceLineNo">059</span><a name="line.59"></a> +<span class="sourceLineNo">060</span> private static final int DEFAULT_NUM_REGIONS = 1000000;<a name="line.60"></a> +<span class="sourceLineNo">061</span> private static Option NUM_REGIONS_OPT = new Option("regions", true,<a name="line.61"></a> +<span class="sourceLineNo">062</span> "Number of regions to consider by load balancer. Default: " + DEFAULT_NUM_REGIONS);<a name="line.62"></a> +<span class="sourceLineNo">063</span><a name="line.63"></a> +<span class="sourceLineNo">064</span> private static final int DEFAULT_NUM_SERVERS = 1000;<a name="line.64"></a> +<span class="sourceLineNo">065</span> private static Option NUM_SERVERS_OPT = new Option("servers", true,<a name="line.65"></a> +<span class="sourceLineNo">066</span> "Number of servers to consider by load balancer. Default: " + DEFAULT_NUM_SERVERS);<a name="line.66"></a> +<span class="sourceLineNo">067</span><a name="line.67"></a> +<span class="sourceLineNo">068</span> private static final String DEFAULT_LOAD_BALANCER =<a name="line.68"></a> +<span class="sourceLineNo">069</span> "org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer";<a name="line.69"></a> +<span class="sourceLineNo">070</span> private static Option LOAD_BALANCER_OPT = new Option("load_balancer", true,<a name="line.70"></a> +<span class="sourceLineNo">071</span> "Type of Load Balancer to use. Default: " + DEFAULT_LOAD_BALANCER);<a name="line.71"></a> +<span class="sourceLineNo">072</span><a name="line.72"></a> +<span class="sourceLineNo">073</span> private int numRegions;<a name="line.73"></a> +<span class="sourceLineNo">074</span> private int numServers;<a name="line.74"></a> +<span class="sourceLineNo">075</span> private String loadBalancerType;<a name="line.75"></a> +<span class="sourceLineNo">076</span> private Class<?> loadBalancerClazz;<a name="line.76"></a> +<span class="sourceLineNo">077</span><a name="line.77"></a> +<span class="sourceLineNo">078</span> private LoadBalancer loadBalancer;<a name="line.78"></a> +<span class="sourceLineNo">079</span><a name="line.79"></a> +<span class="sourceLineNo">080</span> // data<a name="line.80"></a> +<span class="sourceLineNo">081</span> private List<ServerName> servers;<a name="line.81"></a> +<span class="sourceLineNo">082</span> private List<HRegionInfo> regions;<a name="line.82"></a> +<span class="sourceLineNo">083</span> private Map<HRegionInfo, ServerName> regionServerMap;<a name="line.83"></a> +<span class="sourceLineNo">084</span> private Map<ServerName, List<HRegionInfo>> serverRegionMap;<a name="line.84"></a> +<span class="sourceLineNo">085</span><a name="line.85"></a> +<span class="sourceLineNo">086</span> // Non-default configurations.<a name="line.86"></a> +<span class="sourceLineNo">087</span> private void setupConf() {<a name="line.87"></a> +<span class="sourceLineNo">088</span> conf.setClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS, loadBalancerClazz, LoadBalancer.class);<a name="line.88"></a> +<span class="sourceLineNo">089</span> loadBalancer = LoadBalancerFactory.getLoadBalancer(conf);<a name="line.89"></a> +<span class="sourceLineNo">090</span> }<a name="line.90"></a> +<span class="sourceLineNo">091</span><a name="line.91"></a> +<span class="sourceLineNo">092</span> private void generateRegionsAndServers() {<a name="line.92"></a> +<span class="sourceLineNo">093</span> // regions<a name="line.93"></a> +<span class="sourceLineNo">094</span> regions = new ArrayList<>(numRegions);<a name="line.94"></a> +<span class="sourceLineNo">095</span> regionServerMap = new HashMap<>(numRegions);<a name="line.95"></a> +<span class="sourceLineNo">096</span> for (int i = 0; i < numRegions; ++i) {<a name="line.96"></a> +<span class="sourceLineNo">097</span> byte[] start = new byte[16];<a name="line.97"></a> +<span class="sourceLineNo">098</span> byte[] end = new byte[16];<a name="line.98"></a> +<span class="sourceLineNo">099</span><a name="line.99"></a> +<span class="sourceLineNo">100</span> Bytes.putInt(start, 0, i);<a name="line.100"></a> +<span class="sourceLineNo">101</span> Bytes.putInt(end, 0, i + 1);<a name="line.101"></a> +<span class="sourceLineNo">102</span> TableName tableName = TableName.valueOf("LoadBalancerPerfTable");<a name="line.102"></a> +<span class="sourceLineNo">103</span> HRegionInfo hri = new HRegionInfo(tableName, start, end, false, i);<a name="line.103"></a> +<span class="sourceLineNo">104</span> regions.add(hri);<a name="line.104"></a> +<span class="sourceLineNo">105</span> regionServerMap.put(hri, null);<a name="line.105"></a> +<span class="sourceLineNo">106</span> }<a name="line.106"></a> +<span class="sourceLineNo">107</span><a name="line.107"></a> +<span class="sourceLineNo">108</span> // servers<a name="line.108"></a> +<span class="sourceLineNo">109</span> servers = new ArrayList<>(numServers);<a name="line.109"></a> +<span class="sourceLineNo">110</span> serverRegionMap = new HashMap<>(numServers);<a name="line.110"></a> +<span class="sourceLineNo">111</span> for (int i = 0; i < numServers; ++i) {<a name="line.111"></a> +<span class="sourceLineNo">112</span> ServerName sn = ServerName.valueOf("srv" + i, HConstants.DEFAULT_REGIONSERVER_PORT, i);<a name="line.112"></a> +<span class="sourceLineNo">113</span> servers.add(sn);<a name="line.113"></a> +<span class="sourceLineNo">114</span> serverRegionMap.put(sn, i == 0 ? regions : Collections.emptyList());<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> @Override<a name="line.118"></a> +<span class="sourceLineNo">119</span> protected void addOptions() {<a name="line.119"></a> +<span class="sourceLineNo">120</span> addOption(NUM_REGIONS_OPT);<a name="line.120"></a> +<span class="sourceLineNo">121</span> addOption(NUM_SERVERS_OPT);<a name="line.121"></a> +<span class="sourceLineNo">122</span> addOption(LOAD_BALANCER_OPT);<a name="line.122"></a> +<span class="sourceLineNo">123</span> }<a name="line.123"></a> +<span class="sourceLineNo">124</span><a name="line.124"></a> +<span class="sourceLineNo">125</span> @Override<a name="line.125"></a> +<span class="sourceLineNo">126</span> protected void processOptions(CommandLine cmd) {<a name="line.126"></a> +<span class="sourceLineNo">127</span> numRegions = getOptionAsInt(cmd, NUM_REGIONS_OPT.getOpt(), DEFAULT_NUM_REGIONS);<a name="line.127"></a> +<span class="sourceLineNo">128</span> Preconditions.checkArgument(numRegions > 0, "Invalid number of regions!");<a name="line.128"></a> +<span class="sourceLineNo">129</span><a name="line.129"></a> +<span class="sourceLineNo">130</span> numServers = getOptionAsInt(cmd, NUM_SERVERS_OPT.getOpt(), DEFAULT_NUM_SERVERS);<a name="line.130"></a> +<span class="sourceLineNo">131</span> Preconditions.checkArgument(numServers > 0, "Invalid number of servers!");<a name="line.131"></a> +<span class="sourceLineNo">132</span><a name="line.132"></a> +<span class="sourceLineNo">133</span> loadBalancerType = cmd.getOptionValue(LOAD_BALANCER_OPT.getOpt(), DEFAULT_LOAD_BALANCER);<a name="line.133"></a> +<span class="sourceLineNo">134</span> Preconditions.checkArgument(!loadBalancerType.isEmpty(), "Invalid load balancer type!");<a name="line.134"></a> +<span class="sourceLineNo">135</span><a name="line.135"></a> +<span class="sourceLineNo">136</span> try {<a name="line.136"></a> +<span class="sourceLineNo">137</span> loadBalancerClazz = Class.forName(loadBalancerType);<a name="line.137"></a> +<span class="sourceLineNo">138</span> } catch (ClassNotFoundException e) {<a name="line.138"></a> +<span class="sourceLineNo">139</span> System.err.println("Class '" + loadBalancerType + "' not found!");<a name="line.139"></a> +<span class="sourceLineNo">140</span> System.exit(1);<a name="line.140"></a> +<span class="sourceLineNo">141</span> }<a name="line.141"></a> +<span class="sourceLineNo">142</span><a name="line.142"></a> +<span class="sourceLineNo">143</span> setupConf();<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> private String formatResults(final String methodName, final long timeMillis) {<a name="line.146"></a> +<span class="sourceLineNo">147</span> return String.format("Time for %-25s: %dms%n", methodName, timeMillis);<a name="line.147"></a> +<span class="sourceLineNo">148</span> }<a name="line.148"></a> +<span class="sourceLineNo">149</span><a name="line.149"></a> +<span class="sourceLineNo">150</span> @Override<a name="line.150"></a> +<span class="sourceLineNo">151</span> protected int doWork() throws Exception {<a name="line.151"></a> +<span class="sourceLineNo">152</span> generateRegionsAndServers();<a name="line.152"></a> +<span class="sourceLineNo">153</span><a name="line.153"></a> +<span class="sourceLineNo">154</span> String methodName = "roundRobinAssignment";<a name="line.154"></a> +<span class="sourceLineNo">155</span> LOG.info("Calling " + methodName);<a name="line.155"></a> +<span class="sourceLineNo">156</span> Stopwatch watch = new Stopwatch().start();<a name="line.156"></a> +<span class="sourceLineNo">157</span> loadBalancer.roundRobinAssignment(regions, servers);<a name="line.157"></a> +<span class="sourceLineNo">158</span> System.out.print(formatResults(methodName, watch.elapsedMillis()));<a name="line.158"></a> +<span class="sourceLineNo">159</span><a name="line.159"></a> +<span class="sourceLineNo">160</span> methodName = "retainAssignment";<a name="line.160"></a> +<span class="sourceLineNo">161</span> LOG.info("Calling " + methodName);<a name="line.161"></a> +<span class="sourceLineNo">162</span> watch.reset().start();<a name="line.162"></a> +<span class="sourceLineNo">163</span> loadBalancer.retainAssignment(regionServerMap, servers);<a name="line.163"></a> +<span class="sourceLineNo">164</span> System.out.print(formatResults(methodName, watch.elapsedMillis()));<a name="line.164"></a> +<span class="sourceLineNo">165</span><a name="line.165"></a> +<span class="sourceLineNo">166</span> methodName = "balanceCluster";<a name="line.166"></a> +<span class="sourceLineNo">167</span> LOG.info("Calling " + methodName);<a name="line.167"></a> +<span class="sourceLineNo">168</span> watch.reset().start();<a name="line.168"></a> +<span class="sourceLineNo">169</span> loadBalancer.balanceCluster(serverRegionMap);<a name="line.169"></a> +<span class="sourceLineNo">170</span> System.out.print(formatResults(methodName, watch.elapsedMillis()));<a name="line.170"></a> +<span class="sourceLineNo">171</span><a name="line.171"></a> +<span class="sourceLineNo">172</span> return EXIT_SUCCESS;<a name="line.172"></a> +<span class="sourceLineNo">173</span> }<a name="line.173"></a> +<span class="sourceLineNo">174</span><a name="line.174"></a> +<span class="sourceLineNo">175</span> public static void main(String[] args) throws IOException {<a name="line.175"></a> +<span class="sourceLineNo">176</span> LoadBalancerPerformanceEvaluation tool = new LoadBalancerPerformanceEvaluation();<a name="line.176"></a> +<span class="sourceLineNo">177</span> tool.setConf(UTIL.getConfiguration());<a name="line.177"></a> +<span class="sourceLineNo">178</span> tool.run(args);<a name="line.178"></a> +<span class="sourceLineNo">179</span> }<a name="line.179"></a> +<span class="sourceLineNo">180</span>}<a name="line.180"></a> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +</pre> +</div> +</body> +</html>
