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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.quotas;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.util.ConcurrentMapUtils.computeIfAbsent;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.ArrayList;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.EnumSet;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Set;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.util.concurrent.ConcurrentMap;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.ClusterMetrics;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.ClusterMetrics.Option;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.ScheduledChore;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.Stoppable;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.TableName;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.Get;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.RegionStatesCount;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.regionserver.RegionServerServices;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.slf4j.Logger;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.slf4j.LoggerFactory;<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> * Cache that keeps track of the quota settings for the users and tables that are interacting with<a name="line.48"></a>
<span class="sourceLineNo">049</span> * it. To avoid blocking the operations if the requested quota is not in cache an "empty quota" will<a name="line.49"></a>
<span class="sourceLineNo">050</span> * be returned and the request to fetch the quota information will be enqueued for the next refresh.<a name="line.50"></a>
<span class="sourceLineNo">051</span> * TODO: At the moment the Cache has a Chore that will be triggered every 5min or on cache-miss<a name="line.51"></a>
<span class="sourceLineNo">052</span> * events. Later the Quotas will be pushed using the notification system.<a name="line.52"></a>
<span class="sourceLineNo">053</span> */<a name="line.53"></a>
<span class="sourceLineNo">054</span>@InterfaceAudience.Private<a name="line.54"></a>
<span class="sourceLineNo">055</span>@InterfaceStability.Evolving<a name="line.55"></a>
<span class="sourceLineNo">056</span>public class QuotaCache implements Stoppable {<a name="line.56"></a>
<span class="sourceLineNo">057</span> private static final Logger LOG = LoggerFactory.getLogger(QuotaCache.class);<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span> public static final String REFRESH_CONF_KEY = "hbase.quota.refresh.period";<a name="line.59"></a>
<span class="sourceLineNo">060</span> private static final int REFRESH_DEFAULT_PERIOD = 5 * 60000; // 5min<a name="line.60"></a>
<span class="sourceLineNo">061</span> private static final int EVICT_PERIOD_FACTOR = 5; // N * REFRESH_DEFAULT_PERIOD<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> // for testing purpose only, enforce the cache to be always refreshed<a name="line.63"></a>
<span class="sourceLineNo">064</span> static boolean TEST_FORCE_REFRESH = false;<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span> private final ConcurrentMap&lt;String, QuotaState&gt; namespaceQuotaCache = new ConcurrentHashMap&lt;&gt;();<a name="line.66"></a>
<span class="sourceLineNo">067</span> private final ConcurrentMap&lt;TableName, QuotaState&gt; tableQuotaCache = new ConcurrentHashMap&lt;&gt;();<a name="line.67"></a>
<span class="sourceLineNo">068</span> private final ConcurrentMap&lt;String, UserQuotaState&gt; userQuotaCache = new ConcurrentHashMap&lt;&gt;();<a name="line.68"></a>
<span class="sourceLineNo">069</span> private final ConcurrentMap&lt;String, QuotaState&gt; regionServerQuotaCache =<a name="line.69"></a>
<span class="sourceLineNo">070</span> new ConcurrentHashMap&lt;&gt;();<a name="line.70"></a>
<span class="sourceLineNo">071</span> private volatile boolean exceedThrottleQuotaEnabled = false;<a name="line.71"></a>
<span class="sourceLineNo">072</span> // factors used to divide cluster scope quota into machine scope quota<a name="line.72"></a>
<span class="sourceLineNo">073</span> private volatile double machineQuotaFactor = 1;<a name="line.73"></a>
<span class="sourceLineNo">074</span> private final ConcurrentHashMap&lt;TableName, Double&gt; tableMachineQuotaFactors =<a name="line.74"></a>
<span class="sourceLineNo">075</span> new ConcurrentHashMap&lt;&gt;();<a name="line.75"></a>
<span class="sourceLineNo">076</span> private final RegionServerServices rsServices;<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span> private QuotaRefresherChore refreshChore;<a name="line.78"></a>
<span class="sourceLineNo">079</span> private boolean stopped = true;<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span> public QuotaCache(final RegionServerServices rsServices) {<a name="line.81"></a>
<span class="sourceLineNo">082</span> this.rsServices = rsServices;<a name="line.82"></a>
<span class="sourceLineNo">083</span> }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span> public void start() throws IOException {<a name="line.85"></a>
<span class="sourceLineNo">086</span> stopped = false;<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span> // TODO: This will be replaced once we have the notification bus ready.<a name="line.88"></a>
<span class="sourceLineNo">089</span> Configuration conf = rsServices.getConfiguration();<a name="line.89"></a>
<span class="sourceLineNo">090</span> int period = conf.getInt(REFRESH_CONF_KEY, REFRESH_DEFAULT_PERIOD);<a name="line.90"></a>
<span class="sourceLineNo">091</span> refreshChore = new QuotaRefresherChore(period, this);<a name="line.91"></a>
<span class="sourceLineNo">092</span> rsServices.getChoreService().scheduleChore(refreshChore);<a name="line.92"></a>
<span class="sourceLineNo">093</span> }<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span> @Override<a name="line.95"></a>
<span class="sourceLineNo">096</span> public void stop(final String why) {<a name="line.96"></a>
<span class="sourceLineNo">097</span> if (refreshChore != null) {<a name="line.97"></a>
<span class="sourceLineNo">098</span> LOG.debug("Stopping QuotaRefresherChore chore.");<a name="line.98"></a>
<span class="sourceLineNo">099</span> refreshChore.shutdown(true);<a name="line.99"></a>
<span class="sourceLineNo">100</span> }<a name="line.100"></a>
<span class="sourceLineNo">101</span> stopped = true;<a name="line.101"></a>
<span class="sourceLineNo">102</span> }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> @Override<a name="line.104"></a>
<span class="sourceLineNo">105</span> public boolean isStopped() {<a name="line.105"></a>
<span class="sourceLineNo">106</span> return stopped;<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> * Returns the limiter associated to the specified user/table.<a name="line.110"></a>
<span class="sourceLineNo">111</span> * @param ugi the user to limit<a name="line.111"></a>
<span class="sourceLineNo">112</span> * @param table the table to limit<a name="line.112"></a>
<span class="sourceLineNo">113</span> * @return the limiter associated to the specified user/table<a name="line.113"></a>
<span class="sourceLineNo">114</span> */<a name="line.114"></a>
<span class="sourceLineNo">115</span> public QuotaLimiter getUserLimiter(final UserGroupInformation ugi, final TableName table) {<a name="line.115"></a>
<span class="sourceLineNo">116</span> if (table.isSystemTable()) {<a name="line.116"></a>
<span class="sourceLineNo">117</span> return NoopQuotaLimiter.get();<a name="line.117"></a>
<span class="sourceLineNo">118</span> }<a name="line.118"></a>
<span class="sourceLineNo">119</span> return getUserQuotaState(ugi).getTableLimiter(table);<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> /**<a name="line.122"></a>
<span class="sourceLineNo">123</span> * Returns the QuotaState associated to the specified user.<a name="line.123"></a>
<span class="sourceLineNo">124</span> * @param ugi the user<a name="line.124"></a>
<span class="sourceLineNo">125</span> * @return the quota info associated to specified user<a name="line.125"></a>
<span class="sourceLineNo">126</span> */<a name="line.126"></a>
<span class="sourceLineNo">127</span> public UserQuotaState getUserQuotaState(final UserGroupInformation ugi) {<a name="line.127"></a>
<span class="sourceLineNo">128</span> return computeIfAbsent(userQuotaCache, ugi.getShortUserName(), UserQuotaState::new,<a name="line.128"></a>
<span class="sourceLineNo">129</span> this::triggerCacheRefresh);<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> /**<a name="line.132"></a>
<span class="sourceLineNo">133</span> * Returns the limiter associated to the specified table.<a name="line.133"></a>
<span class="sourceLineNo">134</span> * @param table the table to limit<a name="line.134"></a>
<span class="sourceLineNo">135</span> * @return the limiter associated to the specified table<a name="line.135"></a>
<span class="sourceLineNo">136</span> */<a name="line.136"></a>
<span class="sourceLineNo">137</span> public QuotaLimiter getTableLimiter(final TableName table) {<a name="line.137"></a>
<span class="sourceLineNo">138</span> return getQuotaState(this.tableQuotaCache, table).getGlobalLimiter();<a name="line.138"></a>
<span class="sourceLineNo">139</span> }<a name="line.139"></a>
<span class="sourceLineNo">140</span><a name="line.140"></a>
<span class="sourceLineNo">141</span> /**<a name="line.141"></a>
<span class="sourceLineNo">142</span> * Returns the limiter associated to the specified namespace.<a name="line.142"></a>
<span class="sourceLineNo">143</span> * @param namespace the namespace to limit<a name="line.143"></a>
<span class="sourceLineNo">144</span> * @return the limiter associated to the specified namespace<a name="line.144"></a>
<span class="sourceLineNo">145</span> */<a name="line.145"></a>
<span class="sourceLineNo">146</span> public QuotaLimiter getNamespaceLimiter(final String namespace) {<a name="line.146"></a>
<span class="sourceLineNo">147</span> return getQuotaState(this.namespaceQuotaCache, namespace).getGlobalLimiter();<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> /**<a name="line.150"></a>
<span class="sourceLineNo">151</span> * Returns the limiter associated to the specified region server.<a name="line.151"></a>
<span class="sourceLineNo">152</span> * @param regionServer the region server to limit<a name="line.152"></a>
<span class="sourceLineNo">153</span> * @return the limiter associated to the specified region server<a name="line.153"></a>
<span class="sourceLineNo">154</span> */<a name="line.154"></a>
<span class="sourceLineNo">155</span> public QuotaLimiter getRegionServerQuotaLimiter(final String regionServer) {<a name="line.155"></a>
<span class="sourceLineNo">156</span> return getQuotaState(this.regionServerQuotaCache, regionServer).getGlobalLimiter();<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> protected boolean isExceedThrottleQuotaEnabled() {<a name="line.159"></a>
<span class="sourceLineNo">160</span> return exceedThrottleQuotaEnabled;<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<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> * Returns the QuotaState requested. If the quota info is not in cache an empty one will be<a name="line.164"></a>
<span class="sourceLineNo">165</span> * returned and the quota request will be enqueued for the next cache refresh.<a name="line.165"></a>
<span class="sourceLineNo">166</span> */<a name="line.166"></a>
<span class="sourceLineNo">167</span> private &lt;K&gt; QuotaState getQuotaState(final ConcurrentMap&lt;K, QuotaState&gt; quotasMap, final K key) {<a name="line.167"></a>
<span class="sourceLineNo">168</span> return computeIfAbsent(quotasMap, key, QuotaState::new, this::triggerCacheRefresh);<a name="line.168"></a>
<span class="sourceLineNo">169</span> }<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span> void triggerCacheRefresh() {<a name="line.171"></a>
<span class="sourceLineNo">172</span> refreshChore.triggerNow();<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> long getLastUpdate() {<a name="line.175"></a>
<span class="sourceLineNo">176</span> return refreshChore.lastUpdate;<a name="line.176"></a>
<span class="sourceLineNo">177</span> }<a name="line.177"></a>
<span class="sourceLineNo">178</span><a name="line.178"></a>
<span class="sourceLineNo">179</span> Map&lt;String, QuotaState&gt; getNamespaceQuotaCache() {<a name="line.179"></a>
<span class="sourceLineNo">180</span> return namespaceQuotaCache;<a name="line.180"></a>
<span class="sourceLineNo">181</span> }<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span> Map&lt;String, QuotaState&gt; getRegionServerQuotaCache() {<a name="line.183"></a>
<span class="sourceLineNo">184</span> return regionServerQuotaCache;<a name="line.184"></a>
<span class="sourceLineNo">185</span> }<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span> Map&lt;TableName, QuotaState&gt; getTableQuotaCache() {<a name="line.187"></a>
<span class="sourceLineNo">188</span> return tableQuotaCache;<a name="line.188"></a>
<span class="sourceLineNo">189</span> }<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span> Map&lt;String, UserQuotaState&gt; getUserQuotaCache() {<a name="line.191"></a>
<span class="sourceLineNo">192</span> return userQuotaCache;<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> // TODO: Remove this once we have the notification bus<a name="line.195"></a>
<span class="sourceLineNo">196</span> private class QuotaRefresherChore extends ScheduledChore {<a name="line.196"></a>
<span class="sourceLineNo">197</span> private long lastUpdate = 0;<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span> public QuotaRefresherChore(final int period, final Stoppable stoppable) {<a name="line.199"></a>
<span class="sourceLineNo">200</span> super("QuotaRefresherChore", stoppable, period);<a name="line.200"></a>
<span class="sourceLineNo">201</span> }<a name="line.201"></a>
<span class="sourceLineNo">202</span><a name="line.202"></a>
<span class="sourceLineNo">203</span> @Override<a name="line.203"></a>
<span class="sourceLineNo">204</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "GC_UNRELATED_TYPES",<a name="line.204"></a>
<span class="sourceLineNo">205</span> justification = "I do not understand why the complaints, it looks good to me -- FIX")<a name="line.205"></a>
<span class="sourceLineNo">206</span> protected void chore() {<a name="line.206"></a>
<span class="sourceLineNo">207</span> // Prefetch online tables/namespaces<a name="line.207"></a>
<span class="sourceLineNo">208</span> for (TableName table : ((HRegionServer) QuotaCache.this.rsServices).getOnlineTables()) {<a name="line.208"></a>
<span class="sourceLineNo">209</span> if (table.isSystemTable()) {<a name="line.209"></a>
<span class="sourceLineNo">210</span> continue;<a name="line.210"></a>
<span class="sourceLineNo">211</span> }<a name="line.211"></a>
<span class="sourceLineNo">212</span> QuotaCache.this.tableQuotaCache.computeIfAbsent(table, key -&gt; new QuotaState());<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span> final String ns = table.getNamespaceAsString();<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span> QuotaCache.this.namespaceQuotaCache.computeIfAbsent(ns, key -&gt; new QuotaState());<a name="line.216"></a>
<span class="sourceLineNo">217</span> }<a name="line.217"></a>
<span class="sourceLineNo">218</span><a name="line.218"></a>
<span class="sourceLineNo">219</span> QuotaCache.this.regionServerQuotaCache<a name="line.219"></a>
<span class="sourceLineNo">220</span> .computeIfAbsent(QuotaTableUtil.QUOTA_REGION_SERVER_ROW_KEY, key -&gt; new QuotaState());<a name="line.220"></a>
<span class="sourceLineNo">221</span><a name="line.221"></a>
<span class="sourceLineNo">222</span> updateQuotaFactors();<a name="line.222"></a>
<span class="sourceLineNo">223</span> fetchNamespaceQuotaState();<a name="line.223"></a>
<span class="sourceLineNo">224</span> fetchTableQuotaState();<a name="line.224"></a>
<span class="sourceLineNo">225</span> fetchUserQuotaState();<a name="line.225"></a>
<span class="sourceLineNo">226</span> fetchRegionServerQuotaState();<a name="line.226"></a>
<span class="sourceLineNo">227</span> fetchExceedThrottleQuota();<a name="line.227"></a>
<span class="sourceLineNo">228</span> lastUpdate = EnvironmentEdgeManager.currentTime();<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
<span class="sourceLineNo">230</span><a name="line.230"></a>
<span class="sourceLineNo">231</span> private void fetchNamespaceQuotaState() {<a name="line.231"></a>
<span class="sourceLineNo">232</span> fetch("namespace", QuotaCache.this.namespaceQuotaCache, new Fetcher&lt;String, QuotaState&gt;() {<a name="line.232"></a>
<span class="sourceLineNo">233</span> @Override<a name="line.233"></a>
<span class="sourceLineNo">234</span> public Get makeGet(final Map.Entry&lt;String, QuotaState&gt; entry) {<a name="line.234"></a>
<span class="sourceLineNo">235</span> return QuotaUtil.makeGetForNamespaceQuotas(entry.getKey());<a name="line.235"></a>
<span class="sourceLineNo">236</span> }<a name="line.236"></a>
<span class="sourceLineNo">237</span><a name="line.237"></a>
<span class="sourceLineNo">238</span> @Override<a name="line.238"></a>
<span class="sourceLineNo">239</span> public Map&lt;String, QuotaState&gt; fetchEntries(final List&lt;Get&gt; gets) throws IOException {<a name="line.239"></a>
<span class="sourceLineNo">240</span> return QuotaUtil.fetchNamespaceQuotas(rsServices.getConnection(), gets,<a name="line.240"></a>
<span class="sourceLineNo">241</span> machineQuotaFactor);<a name="line.241"></a>
<span class="sourceLineNo">242</span> }<a name="line.242"></a>
<span class="sourceLineNo">243</span> });<a name="line.243"></a>
<span class="sourceLineNo">244</span> }<a name="line.244"></a>
<span class="sourceLineNo">245</span><a name="line.245"></a>
<span class="sourceLineNo">246</span> private void fetchTableQuotaState() {<a name="line.246"></a>
<span class="sourceLineNo">247</span> fetch("table", QuotaCache.this.tableQuotaCache, new Fetcher&lt;TableName, QuotaState&gt;() {<a name="line.247"></a>
<span class="sourceLineNo">248</span> @Override<a name="line.248"></a>
<span class="sourceLineNo">249</span> public Get makeGet(final Map.Entry&lt;TableName, QuotaState&gt; entry) {<a name="line.249"></a>
<span class="sourceLineNo">250</span> return QuotaUtil.makeGetForTableQuotas(entry.getKey());<a name="line.250"></a>
<span class="sourceLineNo">251</span> }<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span> @Override<a name="line.253"></a>
<span class="sourceLineNo">254</span> public Map&lt;TableName, QuotaState&gt; fetchEntries(final List&lt;Get&gt; gets) throws IOException {<a name="line.254"></a>
<span class="sourceLineNo">255</span> return QuotaUtil.fetchTableQuotas(rsServices.getConnection(), gets,<a name="line.255"></a>
<span class="sourceLineNo">256</span> tableMachineQuotaFactors);<a name="line.256"></a>
<span class="sourceLineNo">257</span> }<a name="line.257"></a>
<span class="sourceLineNo">258</span> });<a name="line.258"></a>
<span class="sourceLineNo">259</span> }<a name="line.259"></a>
<span class="sourceLineNo">260</span><a name="line.260"></a>
<span class="sourceLineNo">261</span> private void fetchUserQuotaState() {<a name="line.261"></a>
<span class="sourceLineNo">262</span> final Set&lt;String&gt; namespaces = QuotaCache.this.namespaceQuotaCache.keySet();<a name="line.262"></a>
<span class="sourceLineNo">263</span> final Set&lt;TableName&gt; tables = QuotaCache.this.tableQuotaCache.keySet();<a name="line.263"></a>
<span class="sourceLineNo">264</span> fetch("user", QuotaCache.this.userQuotaCache, new Fetcher&lt;String, UserQuotaState&gt;() {<a name="line.264"></a>
<span class="sourceLineNo">265</span> @Override<a name="line.265"></a>
<span class="sourceLineNo">266</span> public Get makeGet(final Map.Entry&lt;String, UserQuotaState&gt; entry) {<a name="line.266"></a>
<span class="sourceLineNo">267</span> return QuotaUtil.makeGetForUserQuotas(entry.getKey(), tables, namespaces);<a name="line.267"></a>
<span class="sourceLineNo">268</span> }<a name="line.268"></a>
<span class="sourceLineNo">269</span><a name="line.269"></a>
<span class="sourceLineNo">270</span> @Override<a name="line.270"></a>
<span class="sourceLineNo">271</span> public Map&lt;String, UserQuotaState&gt; fetchEntries(final List&lt;Get&gt; gets) throws IOException {<a name="line.271"></a>
<span class="sourceLineNo">272</span> return QuotaUtil.fetchUserQuotas(rsServices.getConnection(), gets,<a name="line.272"></a>
<span class="sourceLineNo">273</span> tableMachineQuotaFactors, machineQuotaFactor);<a name="line.273"></a>
<span class="sourceLineNo">274</span> }<a name="line.274"></a>
<span class="sourceLineNo">275</span> });<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> private void fetchRegionServerQuotaState() {<a name="line.278"></a>
<span class="sourceLineNo">279</span> fetch("regionServer", QuotaCache.this.regionServerQuotaCache,<a name="line.279"></a>
<span class="sourceLineNo">280</span> new Fetcher&lt;String, QuotaState&gt;() {<a name="line.280"></a>
<span class="sourceLineNo">281</span> @Override<a name="line.281"></a>
<span class="sourceLineNo">282</span> public Get makeGet(final Map.Entry&lt;String, QuotaState&gt; entry) {<a name="line.282"></a>
<span class="sourceLineNo">283</span> return QuotaUtil.makeGetForRegionServerQuotas(entry.getKey());<a name="line.283"></a>
<span class="sourceLineNo">284</span> }<a name="line.284"></a>
<span class="sourceLineNo">285</span><a name="line.285"></a>
<span class="sourceLineNo">286</span> @Override<a name="line.286"></a>
<span class="sourceLineNo">287</span> public Map&lt;String, QuotaState&gt; fetchEntries(final List&lt;Get&gt; gets) throws IOException {<a name="line.287"></a>
<span class="sourceLineNo">288</span> return QuotaUtil.fetchRegionServerQuotas(rsServices.getConnection(), gets);<a name="line.288"></a>
<span class="sourceLineNo">289</span> }<a name="line.289"></a>
<span class="sourceLineNo">290</span> });<a name="line.290"></a>
<span class="sourceLineNo">291</span> }<a name="line.291"></a>
<span class="sourceLineNo">292</span><a name="line.292"></a>
<span class="sourceLineNo">293</span> private void fetchExceedThrottleQuota() {<a name="line.293"></a>
<span class="sourceLineNo">294</span> try {<a name="line.294"></a>
<span class="sourceLineNo">295</span> QuotaCache.this.exceedThrottleQuotaEnabled =<a name="line.295"></a>
<span class="sourceLineNo">296</span> QuotaUtil.isExceedThrottleQuotaEnabled(rsServices.getConnection());<a name="line.296"></a>
<span class="sourceLineNo">297</span> } catch (IOException e) {<a name="line.297"></a>
<span class="sourceLineNo">298</span> LOG.warn("Unable to read if exceed throttle quota enabled from quota table", e);<a name="line.298"></a>
<span class="sourceLineNo">299</span> }<a name="line.299"></a>
<span class="sourceLineNo">300</span> }<a name="line.300"></a>
<span class="sourceLineNo">301</span><a name="line.301"></a>
<span class="sourceLineNo">302</span> private &lt;K, V extends QuotaState&gt; void fetch(final String type,<a name="line.302"></a>
<span class="sourceLineNo">303</span> final ConcurrentMap&lt;K, V&gt; quotasMap, final Fetcher&lt;K, V&gt; fetcher) {<a name="line.303"></a>
<span class="sourceLineNo">304</span> long now = EnvironmentEdgeManager.currentTime();<a name="line.304"></a>
<span class="sourceLineNo">305</span> long refreshPeriod = getPeriod();<a name="line.305"></a>
<span class="sourceLineNo">306</span> long evictPeriod = refreshPeriod * EVICT_PERIOD_FACTOR;<a name="line.306"></a>
<span class="sourceLineNo">307</span><a name="line.307"></a>
<span class="sourceLineNo">308</span> // Find the quota entries to update<a name="line.308"></a>
<span class="sourceLineNo">309</span> List&lt;Get&gt; gets = new ArrayList&lt;&gt;();<a name="line.309"></a>
<span class="sourceLineNo">310</span> List&lt;K&gt; toRemove = new ArrayList&lt;&gt;();<a name="line.310"></a>
<span class="sourceLineNo">311</span> for (Map.Entry&lt;K, V&gt; entry : quotasMap.entrySet()) {<a name="line.311"></a>
<span class="sourceLineNo">312</span> long lastUpdate = entry.getValue().getLastUpdate();<a name="line.312"></a>
<span class="sourceLineNo">313</span> long lastQuery = entry.getValue().getLastQuery();<a name="line.313"></a>
<span class="sourceLineNo">314</span> if (lastQuery &gt; 0 &amp;&amp; (now - lastQuery) &gt;= evictPeriod) {<a name="line.314"></a>
<span class="sourceLineNo">315</span> toRemove.add(entry.getKey());<a name="line.315"></a>
<span class="sourceLineNo">316</span> } else if (TEST_FORCE_REFRESH || (now - lastUpdate) &gt;= refreshPeriod) {<a name="line.316"></a>
<span class="sourceLineNo">317</span> gets.add(fetcher.makeGet(entry));<a name="line.317"></a>
<span class="sourceLineNo">318</span> }<a name="line.318"></a>
<span class="sourceLineNo">319</span> }<a name="line.319"></a>
<span class="sourceLineNo">320</span><a name="line.320"></a>
<span class="sourceLineNo">321</span> for (final K key : toRemove) {<a name="line.321"></a>
<span class="sourceLineNo">322</span> if (LOG.isTraceEnabled()) {<a name="line.322"></a>
<span class="sourceLineNo">323</span> LOG.trace("evict " + type + " key=" + key);<a name="line.323"></a>
<span class="sourceLineNo">324</span> }<a name="line.324"></a>
<span class="sourceLineNo">325</span> quotasMap.remove(key);<a name="line.325"></a>
<span class="sourceLineNo">326</span> }<a name="line.326"></a>
<span class="sourceLineNo">327</span><a name="line.327"></a>
<span class="sourceLineNo">328</span> // fetch and update the quota entries<a name="line.328"></a>
<span class="sourceLineNo">329</span> if (!gets.isEmpty()) {<a name="line.329"></a>
<span class="sourceLineNo">330</span> try {<a name="line.330"></a>
<span class="sourceLineNo">331</span> for (Map.Entry&lt;K, V&gt; entry : fetcher.fetchEntries(gets).entrySet()) {<a name="line.331"></a>
<span class="sourceLineNo">332</span> V quotaInfo = quotasMap.putIfAbsent(entry.getKey(), entry.getValue());<a name="line.332"></a>
<span class="sourceLineNo">333</span> if (quotaInfo != null) {<a name="line.333"></a>
<span class="sourceLineNo">334</span> quotaInfo.update(entry.getValue());<a name="line.334"></a>
<span class="sourceLineNo">335</span> }<a name="line.335"></a>
<span class="sourceLineNo">336</span><a name="line.336"></a>
<span class="sourceLineNo">337</span> if (LOG.isTraceEnabled()) {<a name="line.337"></a>
<span class="sourceLineNo">338</span> LOG.trace("refresh " + type + " key=" + entry.getKey() + " quotas=" + quotaInfo);<a name="line.338"></a>
<span class="sourceLineNo">339</span> }<a name="line.339"></a>
<span class="sourceLineNo">340</span> }<a name="line.340"></a>
<span class="sourceLineNo">341</span> } catch (IOException e) {<a name="line.341"></a>
<span class="sourceLineNo">342</span> LOG.warn("Unable to read " + type + " from quota table", e);<a name="line.342"></a>
<span class="sourceLineNo">343</span> }<a name="line.343"></a>
<span class="sourceLineNo">344</span> }<a name="line.344"></a>
<span class="sourceLineNo">345</span> }<a name="line.345"></a>
<span class="sourceLineNo">346</span><a name="line.346"></a>
<span class="sourceLineNo">347</span> /**<a name="line.347"></a>
<span class="sourceLineNo">348</span> * Update quota factors which is used to divide cluster scope quota into machine scope quota For<a name="line.348"></a>
<span class="sourceLineNo">349</span> * user/namespace/user over namespace quota, use [1 / RSNum] as machine factor. For table/user<a name="line.349"></a>
<span class="sourceLineNo">350</span> * over table quota, use [1 / TotalTableRegionNum * MachineTableRegionNum] as machine factor.<a name="line.350"></a>
<span class="sourceLineNo">351</span> */<a name="line.351"></a>
<span class="sourceLineNo">352</span> private void updateQuotaFactors() {<a name="line.352"></a>
<span class="sourceLineNo">353</span> // Update machine quota factor<a name="line.353"></a>
<span class="sourceLineNo">354</span> ClusterMetrics clusterMetrics;<a name="line.354"></a>
<span class="sourceLineNo">355</span> try {<a name="line.355"></a>
<span class="sourceLineNo">356</span> clusterMetrics = rsServices.getConnection().getAdmin()<a name="line.356"></a>
<span class="sourceLineNo">357</span> .getClusterMetrics(EnumSet.of(Option.SERVERS_NAME, Option.TABLE_TO_REGIONS_COUNT));<a name="line.357"></a>
<span class="sourceLineNo">358</span> } catch (IOException e) {<a name="line.358"></a>
<span class="sourceLineNo">359</span> LOG.warn("Failed to get cluster metrics needed for updating quotas", e);<a name="line.359"></a>
<span class="sourceLineNo">360</span> return;<a name="line.360"></a>
<span class="sourceLineNo">361</span> }<a name="line.361"></a>
<span class="sourceLineNo">362</span><a name="line.362"></a>
<span class="sourceLineNo">363</span> int rsSize = clusterMetrics.getServersName().size();<a name="line.363"></a>
<span class="sourceLineNo">364</span> if (rsSize != 0) {<a name="line.364"></a>
<span class="sourceLineNo">365</span> // TODO if use rs group, the cluster limit should be shared by the rs group<a name="line.365"></a>
<span class="sourceLineNo">366</span> machineQuotaFactor = 1.0 / rsSize;<a name="line.366"></a>
<span class="sourceLineNo">367</span> }<a name="line.367"></a>
<span class="sourceLineNo">368</span><a name="line.368"></a>
<span class="sourceLineNo">369</span> Map&lt;TableName, RegionStatesCount&gt; tableRegionStatesCount =<a name="line.369"></a>
<span class="sourceLineNo">370</span> clusterMetrics.getTableRegionStatesCount();<a name="line.370"></a>
<span class="sourceLineNo">371</span><a name="line.371"></a>
<span class="sourceLineNo">372</span> // Update table machine quota factors<a name="line.372"></a>
<span class="sourceLineNo">373</span> for (TableName tableName : tableQuotaCache.keySet()) {<a name="line.373"></a>
<span class="sourceLineNo">374</span> double factor = 1;<a name="line.374"></a>
<span class="sourceLineNo">375</span> try {<a name="line.375"></a>
<span class="sourceLineNo">376</span> long regionSize = tableRegionStatesCount.get(tableName).getOpenRegions();<a name="line.376"></a>
<span class="sourceLineNo">377</span> if (regionSize == 0) {<a name="line.377"></a>
<span class="sourceLineNo">378</span> factor = 0;<a name="line.378"></a>
<span class="sourceLineNo">379</span> } else {<a name="line.379"></a>
<span class="sourceLineNo">380</span> int localRegionSize = rsServices.getRegions(tableName).size();<a name="line.380"></a>
<span class="sourceLineNo">381</span> factor = 1.0 * localRegionSize / regionSize;<a name="line.381"></a>
<span class="sourceLineNo">382</span> }<a name="line.382"></a>
<span class="sourceLineNo">383</span> } catch (IOException e) {<a name="line.383"></a>
<span class="sourceLineNo">384</span> LOG.warn("Get table regions failed: {}", tableName, e);<a name="line.384"></a>
<span class="sourceLineNo">385</span> }<a name="line.385"></a>
<span class="sourceLineNo">386</span> tableMachineQuotaFactors.put(tableName, factor);<a name="line.386"></a>
<span class="sourceLineNo">387</span> }<a name="line.387"></a>
<span class="sourceLineNo">388</span> }<a name="line.388"></a>
<span class="sourceLineNo">389</span> }<a name="line.389"></a>
<span class="sourceLineNo">390</span><a name="line.390"></a>
<span class="sourceLineNo">391</span> static interface Fetcher&lt;Key, Value&gt; {<a name="line.391"></a>
<span class="sourceLineNo">392</span> Get makeGet(Map.Entry&lt;Key, Value&gt; entry);<a name="line.392"></a>
<span class="sourceLineNo">393</span><a name="line.393"></a>
<span class="sourceLineNo">394</span> Map&lt;Key, Value&gt; fetchEntries(List&lt;Get&gt; gets) throws IOException;<a name="line.394"></a>
<span class="sourceLineNo">395</span> }<a name="line.395"></a>
<span class="sourceLineNo">396</span>}<a name="line.396"></a>
</pre>
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