| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>Source code</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta name="description" content="source: package: org.apache.hadoop.hbase.regionserver, class: RSAnnotationReadingPriorityFunction"> |
| <meta name="generator" content="javadoc/SourceToHTMLConverter"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body class="source-page"> |
| <main role="main"> |
| <div class="source-container"> |
| <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.regionserver;</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.lang.reflect.Method;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.HashMap;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.Map;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.ipc.AnnotationReadingPriorityFunction;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.slf4j.Logger;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">029</span><span id="line-29"></span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hbase.thirdparty.com.google.protobuf.Message;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hbase.thirdparty.com.google.protobuf.TextFormat;</span> |
| <span class="source-line-no">032</span><span id="line-32"></span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CloseRegionRequest;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CompactRegionRequest;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.FlushRegionRequest;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetRegionInfoRequest;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.GetStoreFileRequest;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.BulkLoadHFileRequest;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.GetRequest;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.MutateRequest;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanRequest;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45">/**</span> |
| <span class="source-line-no">046</span><span id="line-46"> * Priority function specifically for the region server.</span> |
| <span class="source-line-no">047</span><span id="line-47"> */</span> |
| <span class="source-line-no">048</span><span id="line-48">@InterfaceAudience.Private</span> |
| <span class="source-line-no">049</span><span id="line-49">class RSAnnotationReadingPriorityFunction extends AnnotationReadingPriorityFunction<RSRpcServices> {</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> private static final Logger LOG =</span> |
| <span class="source-line-no">052</span><span id="line-52"> LoggerFactory.getLogger(RSAnnotationReadingPriorityFunction.class);</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> /** Used to control the scan delay, currently sqrt(numNextCall * weight) */</span> |
| <span class="source-line-no">055</span><span id="line-55"> public static final String SCAN_VTIME_WEIGHT_CONF_KEY = "hbase.ipc.server.scan.vtime.weight";</span> |
| <span class="source-line-no">056</span><span id="line-56"></span> |
| <span class="source-line-no">057</span><span id="line-57"> @SuppressWarnings("unchecked")</span> |
| <span class="source-line-no">058</span><span id="line-58"> private final Class<? extends Message>[] knownArgumentClasses =</span> |
| <span class="source-line-no">059</span><span id="line-59"> new Class[] { GetRegionInfoRequest.class, GetStoreFileRequest.class, CloseRegionRequest.class,</span> |
| <span class="source-line-no">060</span><span id="line-60"> FlushRegionRequest.class, CompactRegionRequest.class, GetRequest.class, MutateRequest.class,</span> |
| <span class="source-line-no">061</span><span id="line-61"> ScanRequest.class };</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> // Some caches for helping performance</span> |
| <span class="source-line-no">064</span><span id="line-64"> private final Map<String, Class<? extends Message>> argumentToClassMap = new HashMap<>();</span> |
| <span class="source-line-no">065</span><span id="line-65"> private final Map<String, Map<Class<? extends Message>, Method>> methodMap = new HashMap<>();</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67"> private final float scanVirtualTimeWeight;</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> RSAnnotationReadingPriorityFunction(RSRpcServices rpcServices) {</span> |
| <span class="source-line-no">070</span><span id="line-70"> super(rpcServices);</span> |
| <span class="source-line-no">071</span><span id="line-71"> if (methodMap.get("getRegion") == null) {</span> |
| <span class="source-line-no">072</span><span id="line-72"> methodMap.put("hasRegion", new HashMap<>());</span> |
| <span class="source-line-no">073</span><span id="line-73"> methodMap.put("getRegion", new HashMap<>());</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"> for (Class<? extends Message> cls : knownArgumentClasses) {</span> |
| <span class="source-line-no">076</span><span id="line-76"> argumentToClassMap.put(cls.getName(), cls);</span> |
| <span class="source-line-no">077</span><span id="line-77"> try {</span> |
| <span class="source-line-no">078</span><span id="line-78"> methodMap.get("hasRegion").put(cls, cls.getDeclaredMethod("hasRegion"));</span> |
| <span class="source-line-no">079</span><span id="line-79"> methodMap.get("getRegion").put(cls, cls.getDeclaredMethod("getRegion"));</span> |
| <span class="source-line-no">080</span><span id="line-80"> } catch (Exception e) {</span> |
| <span class="source-line-no">081</span><span id="line-81"> throw new RuntimeException(e);</span> |
| <span class="source-line-no">082</span><span id="line-82"> }</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> Configuration conf = rpcServices.getConfiguration();</span> |
| <span class="source-line-no">086</span><span id="line-86"> scanVirtualTimeWeight = conf.getFloat(SCAN_VTIME_WEIGHT_CONF_KEY, 1.0f);</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"> protected int normalizePriority(int priority) {</span> |
| <span class="source-line-no">091</span><span id="line-91"> return priority;</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"> protected int getBasePriority(RequestHeader header, Message param) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> // Trust the client-set priorities if set</span> |
| <span class="source-line-no">097</span><span id="line-97"> if (header.hasPriority()) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> return header.getPriority();</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"> if (param instanceof BulkLoadHFileRequest) {</span> |
| <span class="source-line-no">101</span><span id="line-101"> return HConstants.BULKLOAD_QOS;</span> |
| <span class="source-line-no">102</span><span id="line-102"> }</span> |
| <span class="source-line-no">103</span><span id="line-103"></span> |
| <span class="source-line-no">104</span><span id="line-104"> String cls = param.getClass().getName();</span> |
| <span class="source-line-no">105</span><span id="line-105"> Class<? extends Message> rpcArgClass = argumentToClassMap.get(cls);</span> |
| <span class="source-line-no">106</span><span id="line-106"> RegionSpecifier regionSpecifier = null;</span> |
| <span class="source-line-no">107</span><span id="line-107"> // check whether the request has reference to meta region or now.</span> |
| <span class="source-line-no">108</span><span id="line-108"> try {</span> |
| <span class="source-line-no">109</span><span id="line-109"> // Check if the param has a region specifier; the pb methods are hasRegion and getRegion if</span> |
| <span class="source-line-no">110</span><span id="line-110"> // hasRegion returns true. Not all listed methods have region specifier each time. For</span> |
| <span class="source-line-no">111</span><span id="line-111"> // example, the ScanRequest has it on setup but thereafter relies on the scannerid rather than</span> |
| <span class="source-line-no">112</span><span id="line-112"> // send the region over every time.</span> |
| <span class="source-line-no">113</span><span id="line-113"> Method hasRegion = methodMap.get("hasRegion").get(rpcArgClass);</span> |
| <span class="source-line-no">114</span><span id="line-114"> if (hasRegion != null && (Boolean) hasRegion.invoke(param, (Object[]) null)) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> Method getRegion = methodMap.get("getRegion").get(rpcArgClass);</span> |
| <span class="source-line-no">116</span><span id="line-116"> regionSpecifier = (RegionSpecifier) getRegion.invoke(param, (Object[]) null);</span> |
| <span class="source-line-no">117</span><span id="line-117"> Region region = rpcServices.getRegion(regionSpecifier);</span> |
| <span class="source-line-no">118</span><span id="line-118"> if (region.getRegionInfo().getTable().isSystemTable()) {</span> |
| <span class="source-line-no">119</span><span id="line-119"> if (LOG.isTraceEnabled()) {</span> |
| <span class="source-line-no">120</span><span id="line-120"> LOG.trace(</span> |
| <span class="source-line-no">121</span><span id="line-121"> "High priority because region=" + region.getRegionInfo().getRegionNameAsString());</span> |
| <span class="source-line-no">122</span><span id="line-122"> }</span> |
| <span class="source-line-no">123</span><span id="line-123"> return HConstants.SYSTEMTABLE_QOS;</span> |
| <span class="source-line-no">124</span><span id="line-124"> }</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"> } catch (Exception ex) {</span> |
| <span class="source-line-no">127</span><span id="line-127"> // Not good throwing an exception out of here, a runtime anyways. Let the query go into the</span> |
| <span class="source-line-no">128</span><span id="line-128"> // server and have it throw the exception if still an issue. Just mark it normal priority.</span> |
| <span class="source-line-no">129</span><span id="line-129"> if (LOG.isTraceEnabled()) LOG.trace("Marking normal priority after getting exception=" + ex);</span> |
| <span class="source-line-no">130</span><span id="line-130"> return HConstants.NORMAL_QOS;</span> |
| <span class="source-line-no">131</span><span id="line-131"> }</span> |
| <span class="source-line-no">132</span><span id="line-132"></span> |
| <span class="source-line-no">133</span><span id="line-133"> if (param instanceof ScanRequest) { // scanner methods...</span> |
| <span class="source-line-no">134</span><span id="line-134"> ScanRequest request = (ScanRequest) param;</span> |
| <span class="source-line-no">135</span><span id="line-135"> if (!request.hasScannerId()) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> return HConstants.NORMAL_QOS;</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"> RegionScanner scanner = rpcServices.getScanner(request.getScannerId());</span> |
| <span class="source-line-no">139</span><span id="line-139"> if (scanner != null && scanner.getRegionInfo().getTable().isSystemTable()) {</span> |
| <span class="source-line-no">140</span><span id="line-140"> if (LOG.isTraceEnabled()) {</span> |
| <span class="source-line-no">141</span><span id="line-141"> // Scanner requests are small in size so TextFormat version should not overwhelm log.</span> |
| <span class="source-line-no">142</span><span id="line-142"> LOG.trace("High priority scanner request " + TextFormat.shortDebugString(request));</span> |
| <span class="source-line-no">143</span><span id="line-143"> }</span> |
| <span class="source-line-no">144</span><span id="line-144"> return HConstants.SYSTEMTABLE_QOS;</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"></span> |
| <span class="source-line-no">148</span><span id="line-148"> return HConstants.NORMAL_QOS;</span> |
| <span class="source-line-no">149</span><span id="line-149"> }</span> |
| <span class="source-line-no">150</span><span id="line-150"></span> |
| <span class="source-line-no">151</span><span id="line-151"> /**</span> |
| <span class="source-line-no">152</span><span id="line-152"> * Based on the request content, returns the deadline of the request.</span> |
| <span class="source-line-no">153</span><span id="line-153"> * @return Deadline of this request. 0 now, otherwise msec of 'delay'</span> |
| <span class="source-line-no">154</span><span id="line-154"> */</span> |
| <span class="source-line-no">155</span><span id="line-155"> @Override</span> |
| <span class="source-line-no">156</span><span id="line-156"> public long getDeadline(RequestHeader header, Message param) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> if (param instanceof ScanRequest) {</span> |
| <span class="source-line-no">158</span><span id="line-158"> ScanRequest request = (ScanRequest) param;</span> |
| <span class="source-line-no">159</span><span id="line-159"> if (!request.hasScannerId()) {</span> |
| <span class="source-line-no">160</span><span id="line-160"> return 0;</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> // get the 'virtual time' of the scanner, and applies sqrt() to get a</span> |
| <span class="source-line-no">164</span><span id="line-164"> // nice curve for the delay. More a scanner is used the less priority it gets.</span> |
| <span class="source-line-no">165</span><span id="line-165"> // The weight is used to have more control on the delay.</span> |
| <span class="source-line-no">166</span><span id="line-166"> long vtime = rpcServices.getScannerVirtualTime(request.getScannerId());</span> |
| <span class="source-line-no">167</span><span id="line-167"> return Math.round(Math.sqrt(vtime * scanVirtualTimeWeight));</span> |
| <span class="source-line-no">168</span><span id="line-168"> }</span> |
| <span class="source-line-no">169</span><span id="line-169"> return 0;</span> |
| <span class="source-line-no">170</span><span id="line-170"> }</span> |
| <span class="source-line-no">171</span><span id="line-171">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
