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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<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.regionserver;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.lang.reflect.Method;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.HashMap;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Map;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.conf.Configuration;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.HConstants;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.slf4j.Logger;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.slf4j.LoggerFactory;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.ipc.PriorityFunction;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.ipc.QosPriority;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CloseRegionRequest;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CompactRegionRequest;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.FlushRegionRequest;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoRequest;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetStoreFileRequest;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.GetRequest;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutateRequest;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanRequest;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hbase.thirdparty.com.google.protobuf.Message;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hbase.thirdparty.com.google.protobuf.TextFormat;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.security.User;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span>/**<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Reads special method annotations and table names to figure a priority for use by QoS facility in<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * ipc; e.g: rpcs to hbase:meta get priority.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> */<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>// TODO: Remove. This is doing way too much work just to figure a priority. Do as Elliott<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>// suggests and just have the client specify a priority.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span>//The logic for figuring out high priority RPCs is as follows:<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>//1. if the method is annotated with a QosPriority of QOS_HIGH,<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>// that is honored<a name="line.56"></a> |
| <span class="sourceLineNo">057</span>//2. parse out the protobuf message and see if the request is for meta<a name="line.57"></a> |
| <span class="sourceLineNo">058</span>// region, and if so, treat it as a high priority RPC<a name="line.58"></a> |
| <span class="sourceLineNo">059</span>//Some optimizations for (2) are done here -<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>//Clients send the argument classname as part of making the RPC. The server<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>//decides whether to deserialize the proto argument message based on the<a name="line.61"></a> |
| <span class="sourceLineNo">062</span>//pre-established set of argument classes (knownArgumentClasses below).<a name="line.62"></a> |
| <span class="sourceLineNo">063</span>//This prevents the server from having to deserialize all proto argument<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>//messages prematurely.<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>//All the argument classes declare a 'getRegion' method that returns a<a name="line.65"></a> |
| <span class="sourceLineNo">066</span>//RegionSpecifier object. Methods can be invoked on the returned object<a name="line.66"></a> |
| <span class="sourceLineNo">067</span>//to figure out whether it is a meta region or not.<a name="line.67"></a> |
| <span class="sourceLineNo">068</span>@InterfaceAudience.Private<a name="line.68"></a> |
| <span class="sourceLineNo">069</span>public class AnnotationReadingPriorityFunction implements PriorityFunction {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> private static final Logger LOG =<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> LoggerFactory.getLogger(AnnotationReadingPriorityFunction.class.getName());<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> /** Used to control the scan delay, currently sqrt(numNextCall * weight) */<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> public static final String SCAN_VTIME_WEIGHT_CONF_KEY = "hbase.ipc.server.scan.vtime.weight";<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> protected final Map<String, Integer> annotatedQos;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> //We need to mock the regionserver instance for some unit tests (set via<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> //setRegionServer method.<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private RSRpcServices rpcServices;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> @SuppressWarnings("unchecked")<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private final Class<? extends Message>[] knownArgumentClasses = new Class[]{<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> GetRegionInfoRequest.class,<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> GetStoreFileRequest.class,<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> CloseRegionRequest.class,<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> FlushRegionRequest.class,<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> CompactRegionRequest.class,<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> GetRequest.class,<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> MutateRequest.class,<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> ScanRequest.class<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> // Some caches for helping performance<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private final Map<String, Class<? extends Message>> argumentToClassMap = new HashMap<>();<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> private final Map<String, Map<Class<? extends Message>, Method>> methodMap = new HashMap<>();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> private final float scanVirtualTimeWeight;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> /**<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * Calls {@link #AnnotationReadingPriorityFunction(RSRpcServices, Class)} using the result of<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * {@code rpcServices#getClass()}<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> *<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * @param rpcServices<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * The RPC server implementation<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> */<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> public AnnotationReadingPriorityFunction(final RSRpcServices rpcServices) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> this(rpcServices, rpcServices.getClass());<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> }<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> /**<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * Constructs the priority function given the RPC server implementation and the annotations on the<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> * methods in the provided {@code clz}.<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> *<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * @param rpcServices<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * The RPC server implementation<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * @param clz<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * The concrete RPC server implementation's class<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> */<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> public AnnotationReadingPriorityFunction(final RSRpcServices rpcServices,<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> Class<? extends RSRpcServices> clz) {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> Map<String,Integer> qosMap = new HashMap<>();<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> for (Method m : clz.getMethods()) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> QosPriority p = m.getAnnotation(QosPriority.class);<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> if (p != null) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> // Since we protobuf'd, and then subsequently, when we went with pb style, method names<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> // are capitalized. This meant that this brittle compare of method names gotten by<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> // reflection no longer matched the method names coming in over pb. TODO: Get rid of this<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> // check. For now, workaround is to capitalize the names we got from reflection so they<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> // have chance of matching the pb ones.<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> String capitalizedMethodName = capitalize(m.getName());<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> qosMap.put(capitalizedMethodName, p.priority());<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> }<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> this.rpcServices = rpcServices;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> this.annotatedQos = qosMap;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> if (methodMap.get("getRegion") == null) {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> methodMap.put("hasRegion", new HashMap<>());<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> methodMap.put("getRegion", new HashMap<>());<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> for (Class<? extends Message> cls : knownArgumentClasses) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> argumentToClassMap.put(cls.getName(), cls);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> try {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> methodMap.get("hasRegion").put(cls, cls.getDeclaredMethod("hasRegion"));<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> methodMap.get("getRegion").put(cls, cls.getDeclaredMethod("getRegion"));<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> } catch (Exception e) {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> throw new RuntimeException(e);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> }<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> Configuration conf = rpcServices.getConfiguration();<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> scanVirtualTimeWeight = conf.getFloat(SCAN_VTIME_WEIGHT_CONF_KEY, 1.0f);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> private String capitalize(final String s) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> StringBuilder strBuilder = new StringBuilder(s);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> strBuilder.setCharAt(0, Character.toUpperCase(strBuilder.charAt(0)));<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> return strBuilder.toString();<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span><a name="line.158"></a> |
| <span class="sourceLineNo">159</span> /**<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * Returns a 'priority' based on the request type.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> *<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * Currently the returned priority is used for queue selection.<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * See the SimpleRpcScheduler as example. It maintains a queue per 'priory type'<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * HIGH_QOS (meta requests), REPLICATION_QOS (replication requests),<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * NORMAL_QOS (user requests).<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> */<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> @Override<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> public int getPriority(RequestHeader header, Message param, User user) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> int priorityByAnnotation = getAnnotatedPriority(header);<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> if (priorityByAnnotation >= 0) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> return priorityByAnnotation;<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> return getBasePriority(header, param);<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> /**<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * See if the method has an annotation.<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * @param header<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * @return Return the priority from the annotation. If there isn't<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * an annotation, this returns something below zero.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> */<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> protected int getAnnotatedPriority(RequestHeader header) {<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> String methodName = header.getMethodName();<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> Integer priorityByAnnotation = annotatedQos.get(methodName);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> if (priorityByAnnotation != null) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> return priorityByAnnotation;<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> }<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> return -1;<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<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> * Get the priority for a given request from the header and the param<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * This doesn't consider which user is sending the request at all.<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> * This doesn't consider annotations<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> */<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> protected int getBasePriority(RequestHeader header, Message param) {<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> if (param == null) {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return HConstants.NORMAL_QOS;<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> // Trust the client-set priorities if set<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> if (header.hasPriority()) {<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> return header.getPriority();<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> }<a name="line.205"></a> |
| <span class="sourceLineNo">206</span><a name="line.206"></a> |
| <span class="sourceLineNo">207</span> String cls = param.getClass().getName();<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> Class<? extends Message> rpcArgClass = argumentToClassMap.get(cls);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> RegionSpecifier regionSpecifier = null;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> //check whether the request has reference to meta region or now.<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> try {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> // Check if the param has a region specifier; the pb methods are hasRegion and getRegion if<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> // hasRegion returns true. Not all listed methods have region specifier each time. For<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> // example, the ScanRequest has it on setup but thereafter relies on the scannerid rather than<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> // send the region over every time.<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> Method hasRegion = methodMap.get("hasRegion").get(rpcArgClass);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> if (hasRegion != null && (Boolean)hasRegion.invoke(param, (Object[])null)) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> Method getRegion = methodMap.get("getRegion").get(rpcArgClass);<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> regionSpecifier = (RegionSpecifier)getRegion.invoke(param, (Object[])null);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> Region region = rpcServices.getRegion(regionSpecifier);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> if (region.getRegionInfo().getTable().isSystemTable()) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> if (LOG.isTraceEnabled()) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> LOG.trace("High priority because region=" +<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> region.getRegionInfo().getRegionNameAsString());<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> }<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> return HConstants.SYSTEMTABLE_QOS;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> } catch (Exception ex) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> // Not good throwing an exception out of here, a runtime anyways. Let the query go into the<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> // server and have it throw the exception if still an issue. Just mark it normal priority.<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> if (LOG.isTraceEnabled()) LOG.trace("Marking normal priority after getting exception=" + ex);<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return HConstants.NORMAL_QOS;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span><a name="line.235"></a> |
| <span class="sourceLineNo">236</span> if (param instanceof ScanRequest) { // scanner methods...<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> ScanRequest request = (ScanRequest)param;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> if (!request.hasScannerId()) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> return HConstants.NORMAL_QOS;<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> RegionScanner scanner = rpcServices.getScanner(request.getScannerId());<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (scanner != null && scanner.getRegionInfo().getTable().isSystemTable()) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> if (LOG.isTraceEnabled()) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> // Scanner requests are small in size so TextFormat version should not overwhelm log.<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> LOG.trace("High priority scanner request " + TextFormat.shortDebugString(request));<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> return HConstants.SYSTEMTABLE_QOS;<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> }<a name="line.249"></a> |
| <span class="sourceLineNo">250</span><a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return HConstants.NORMAL_QOS;<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> /**<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> * Based on the request content, returns the deadline of the request.<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> *<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * @param header<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * @param param<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * @return Deadline of this request. 0 now, otherwise msec of 'delay'<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> */<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> @Override<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> public long getDeadline(RequestHeader header, Message param) {<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> if (param instanceof ScanRequest) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> ScanRequest request = (ScanRequest)param;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> if (!request.hasScannerId()) {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> return 0;<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span><a name="line.268"></a> |
| <span class="sourceLineNo">269</span> // get the 'virtual time' of the scanner, and applies sqrt() to get a<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> // nice curve for the delay. More a scanner is used the less priority it gets.<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> // The weight is used to have more control on the delay.<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> long vtime = rpcServices.getScannerVirtualTime(request.getScannerId());<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> return Math.round(Math.sqrt(vtime * scanVirtualTimeWeight));<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> return 0;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> @VisibleForTesting<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> void setRegionServer(final HRegionServer hrs) {<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> this.rpcServices = hrs.getRSRpcServices();<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> }<a name="line.281"></a> |
| <span class="sourceLineNo">282</span>}<a name="line.282"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
