http://git-wip-us.apache.org/repos/asf/hbase-site/blob/4f94a4c5/devapidocs/src-html/org/apache/hadoop/hbase/quotas/QuotaCache.QuotaRefresherChore.html
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diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/quotas/QuotaCache.QuotaRefresherChore.html
b/devapidocs/src-html/org/apache/hadoop/hbase/quotas/QuotaCache.QuotaRefresherChore.html
index 40c9779..fc7948d 100644
---
a/devapidocs/src-html/org/apache/hadoop/hbase/quotas/QuotaCache.QuotaRefresherChore.html
+++
b/devapidocs/src-html/org/apache/hadoop/hbase/quotas/QuotaCache.QuotaRefresherChore.html
@@ -6,7 +6,7 @@
</head>
<body>
<div class="sourceContainer">
-<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<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>
@@ -28,289 +28,290 @@
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import static
org.apache.hadoop.hbase.util.CollectionUtils.computeIfAbsent;<a
name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
-<span class="sourceLineNo">023</span>import
org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a
name="line.23"></a>
-<span class="sourceLineNo">024</span><a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.io.IOException;<a
name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.ArrayList;<a
name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.List;<a
name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.Map;<a
name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.Set;<a
name="line.29"></a>
-<span class="sourceLineNo">030</span>import
java.util.concurrent.ConcurrentHashMap;<a name="line.30"></a>
-<span class="sourceLineNo">031</span><a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a
name="line.32"></a>
-<span class="sourceLineNo">033</span>import
org.apache.commons.logging.LogFactory;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import
org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import
org.apache.hadoop.hbase.ScheduledChore;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import
org.apache.hadoop.hbase.Stoppable;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import
org.apache.hadoop.hbase.TableName;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import
org.apache.yetus.audience.InterfaceAudience;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import
org.apache.yetus.audience.InterfaceStability;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import
org.apache.hadoop.hbase.client.Get;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import
org.apache.hadoop.hbase.regionserver.RegionServerServices;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import
org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import
org.apache.hadoop.security.UserGroupInformation;<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> * Cache that keeps track of the quota
settings for the users and tables that<a name="line.46"></a>
-<span class="sourceLineNo">047</span> * are interacting with it.<a
name="line.47"></a>
-<span class="sourceLineNo">048</span> *<a name="line.48"></a>
-<span class="sourceLineNo">049</span> * To avoid blocking the operations if
the requested quota is not in cache<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * an "empty quota" will be returned and
the request to fetch the quota information<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * will be enqueued for the next
refresh.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> *<a name="line.52"></a>
-<span class="sourceLineNo">053</span> * TODO: At the moment the Cache has a
Chore that will be triggered every 5min<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * or on cache-miss events. Later the
Quotas will be pushed using the notification system.<a name="line.54"></a>
-<span class="sourceLineNo">055</span> */<a name="line.55"></a>
-<span class="sourceLineNo">056</span>@InterfaceAudience.Private<a
name="line.56"></a>
-<span class="sourceLineNo">057</span>@InterfaceStability.Evolving<a
name="line.57"></a>
-<span class="sourceLineNo">058</span>public class QuotaCache implements
Stoppable {<a name="line.58"></a>
-<span class="sourceLineNo">059</span> private static final Log LOG =
LogFactory.getLog(QuotaCache.class);<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span> public static final String
REFRESH_CONF_KEY = "hbase.quota.refresh.period";<a name="line.61"></a>
-<span class="sourceLineNo">062</span> private static final int
REFRESH_DEFAULT_PERIOD = 5 * 60000; // 5min<a name="line.62"></a>
-<span class="sourceLineNo">063</span> private static final int
EVICT_PERIOD_FACTOR = 5; // N * REFRESH_DEFAULT_PERIOD<a name="line.63"></a>
-<span class="sourceLineNo">064</span><a name="line.64"></a>
-<span class="sourceLineNo">065</span> // for testing purpose only, enforce
the cache to be always refreshed<a name="line.65"></a>
-<span class="sourceLineNo">066</span> static boolean TEST_FORCE_REFRESH =
false;<a name="line.66"></a>
-<span class="sourceLineNo">067</span><a name="line.67"></a>
-<span class="sourceLineNo">068</span> private final
ConcurrentHashMap<String, QuotaState> namespaceQuotaCache = new
ConcurrentHashMap<>();<a name="line.68"></a>
-<span class="sourceLineNo">069</span> private final
ConcurrentHashMap<TableName, QuotaState> tableQuotaCache = new
ConcurrentHashMap<>();<a name="line.69"></a>
-<span class="sourceLineNo">070</span> private final
ConcurrentHashMap<String, UserQuotaState> userQuotaCache = new
ConcurrentHashMap<>();<a name="line.70"></a>
-<span class="sourceLineNo">071</span> private final RegionServerServices
rsServices;<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span> private QuotaRefresherChore
refreshChore;<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private boolean stopped = true;<a
name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span> public QuotaCache(final
RegionServerServices rsServices) {<a name="line.76"></a>
-<span class="sourceLineNo">077</span> this.rsServices = rsServices;<a
name="line.77"></a>
-<span class="sourceLineNo">078</span> }<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span> public void start() throws IOException
{<a name="line.80"></a>
-<span class="sourceLineNo">081</span> stopped = false;<a name="line.81"></a>
-<span class="sourceLineNo">082</span><a name="line.82"></a>
-<span class="sourceLineNo">083</span> // TODO: This will be replaced once
we have the notification bus ready.<a name="line.83"></a>
-<span class="sourceLineNo">084</span> Configuration conf =
rsServices.getConfiguration();<a name="line.84"></a>
-<span class="sourceLineNo">085</span> int period =
conf.getInt(REFRESH_CONF_KEY, REFRESH_DEFAULT_PERIOD);<a name="line.85"></a>
-<span class="sourceLineNo">086</span> refreshChore = new
QuotaRefresherChore(period, this);<a name="line.86"></a>
-<span class="sourceLineNo">087</span>
rsServices.getChoreService().scheduleChore(refreshChore);<a name="line.87"></a>
-<span class="sourceLineNo">088</span> }<a name="line.88"></a>
-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span> @Override<a name="line.90"></a>
-<span class="sourceLineNo">091</span> public void stop(final String why) {<a
name="line.91"></a>
-<span class="sourceLineNo">092</span> stopped = true;<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 boolean isStopped() {<a
name="line.96"></a>
-<span class="sourceLineNo">097</span> return stopped;<a name="line.97"></a>
-<span class="sourceLineNo">098</span> }<a name="line.98"></a>
-<span class="sourceLineNo">099</span><a name="line.99"></a>
-<span class="sourceLineNo">100</span> /**<a name="line.100"></a>
-<span class="sourceLineNo">101</span> * Returns the limiter associated to
the specified user/table.<a name="line.101"></a>
-<span class="sourceLineNo">102</span> *<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * @param ugi the user to limit<a
name="line.103"></a>
-<span class="sourceLineNo">104</span> * @param table the table to limit<a
name="line.104"></a>
-<span class="sourceLineNo">105</span> * @return the limiter associated to
the specified user/table<a name="line.105"></a>
-<span class="sourceLineNo">106</span> */<a name="line.106"></a>
-<span class="sourceLineNo">107</span> public QuotaLimiter
getUserLimiter(final UserGroupInformation ugi, final TableName table) {<a
name="line.107"></a>
-<span class="sourceLineNo">108</span> if (table.isSystemTable()) {<a
name="line.108"></a>
-<span class="sourceLineNo">109</span> return NoopQuotaLimiter.get();<a
name="line.109"></a>
-<span class="sourceLineNo">110</span> }<a name="line.110"></a>
-<span class="sourceLineNo">111</span> return
getUserQuotaState(ugi).getTableLimiter(table);<a name="line.111"></a>
-<span class="sourceLineNo">112</span> }<a name="line.112"></a>
-<span class="sourceLineNo">113</span><a name="line.113"></a>
-<span class="sourceLineNo">114</span> /**<a name="line.114"></a>
-<span class="sourceLineNo">115</span> * Returns the QuotaState associated to
the specified user.<a name="line.115"></a>
-<span class="sourceLineNo">116</span> * @param ugi the user<a
name="line.116"></a>
-<span class="sourceLineNo">117</span> * @return the quota info associated to
specified user<a name="line.117"></a>
-<span class="sourceLineNo">118</span> */<a name="line.118"></a>
-<span class="sourceLineNo">119</span> public UserQuotaState
getUserQuotaState(final UserGroupInformation ugi) {<a name="line.119"></a>
-<span class="sourceLineNo">120</span> return
computeIfAbsent(userQuotaCache, ugi.getShortUserName(), UserQuotaState::new,<a
name="line.120"></a>
-<span class="sourceLineNo">121</span> this::triggerCacheRefresh);<a
name="line.121"></a>
-<span class="sourceLineNo">122</span> }<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> * Returns the limiter associated to
the specified table.<a name="line.125"></a>
-<span class="sourceLineNo">126</span> *<a name="line.126"></a>
-<span class="sourceLineNo">127</span> * @param table the table to limit<a
name="line.127"></a>
-<span class="sourceLineNo">128</span> * @return the limiter associated to
the specified table<a name="line.128"></a>
-<span class="sourceLineNo">129</span> */<a name="line.129"></a>
-<span class="sourceLineNo">130</span> public QuotaLimiter
getTableLimiter(final TableName table) {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> return
getQuotaState(this.tableQuotaCache, table).getGlobalLimiter();<a
name="line.131"></a>
-<span class="sourceLineNo">132</span> }<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> /**<a name="line.134"></a>
-<span class="sourceLineNo">135</span> * Returns the limiter associated to
the specified namespace.<a name="line.135"></a>
-<span class="sourceLineNo">136</span> *<a name="line.136"></a>
-<span class="sourceLineNo">137</span> * @param namespace the namespace to
limit<a name="line.137"></a>
-<span class="sourceLineNo">138</span> * @return the limiter associated to
the specified namespace<a name="line.138"></a>
-<span class="sourceLineNo">139</span> */<a name="line.139"></a>
-<span class="sourceLineNo">140</span> public QuotaLimiter
getNamespaceLimiter(final String namespace) {<a name="line.140"></a>
-<span class="sourceLineNo">141</span> return
getQuotaState(this.namespaceQuotaCache, namespace).getGlobalLimiter();<a
name="line.141"></a>
-<span class="sourceLineNo">142</span> }<a name="line.142"></a>
-<span class="sourceLineNo">143</span><a name="line.143"></a>
-<span class="sourceLineNo">144</span> /**<a name="line.144"></a>
-<span class="sourceLineNo">145</span> * Returns the QuotaState requested. If
the quota info is not in cache an empty one will be<a name="line.145"></a>
-<span class="sourceLineNo">146</span> * returned and the quota request will
be enqueued for the next cache refresh.<a name="line.146"></a>
-<span class="sourceLineNo">147</span> */<a name="line.147"></a>
-<span class="sourceLineNo">148</span> private <K> QuotaState
getQuotaState(final ConcurrentHashMap<K, QuotaState> quotasMap,<a
name="line.148"></a>
-<span class="sourceLineNo">149</span> final K key) {<a
name="line.149"></a>
-<span class="sourceLineNo">150</span> return computeIfAbsent(quotasMap,
key, QuotaState::new, this::triggerCacheRefresh);<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> @VisibleForTesting<a
name="line.153"></a>
-<span class="sourceLineNo">154</span> void triggerCacheRefresh() {<a
name="line.154"></a>
-<span class="sourceLineNo">155</span> refreshChore.triggerNow();<a
name="line.155"></a>
-<span class="sourceLineNo">156</span> }<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> @VisibleForTesting<a
name="line.158"></a>
-<span class="sourceLineNo">159</span> long getLastUpdate() {<a
name="line.159"></a>
-<span class="sourceLineNo">160</span> return refreshChore.lastUpdate;<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> @VisibleForTesting<a
name="line.163"></a>
-<span class="sourceLineNo">164</span> Map<String, QuotaState>
getNamespaceQuotaCache() {<a name="line.164"></a>
-<span class="sourceLineNo">165</span> return namespaceQuotaCache;<a
name="line.165"></a>
-<span class="sourceLineNo">166</span> }<a name="line.166"></a>
-<span class="sourceLineNo">167</span><a name="line.167"></a>
-<span class="sourceLineNo">168</span> @VisibleForTesting<a
name="line.168"></a>
-<span class="sourceLineNo">169</span> Map<TableName, QuotaState>
getTableQuotaCache() {<a name="line.169"></a>
-<span class="sourceLineNo">170</span> return tableQuotaCache;<a
name="line.170"></a>
-<span class="sourceLineNo">171</span> }<a name="line.171"></a>
-<span class="sourceLineNo">172</span><a name="line.172"></a>
-<span class="sourceLineNo">173</span> @VisibleForTesting<a
name="line.173"></a>
-<span class="sourceLineNo">174</span> Map<String, UserQuotaState>
getUserQuotaCache() {<a name="line.174"></a>
-<span class="sourceLineNo">175</span> return userQuotaCache;<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> // TODO: Remove this once we have the
notification bus<a name="line.178"></a>
-<span class="sourceLineNo">179</span> private class QuotaRefresherChore
extends ScheduledChore {<a name="line.179"></a>
-<span class="sourceLineNo">180</span> private long lastUpdate = 0;<a
name="line.180"></a>
-<span class="sourceLineNo">181</span><a name="line.181"></a>
-<span class="sourceLineNo">182</span> public QuotaRefresherChore(final int
period, final Stoppable stoppable) {<a name="line.182"></a>
-<span class="sourceLineNo">183</span> super("QuotaRefresherChore",
stoppable, period);<a name="line.183"></a>
-<span class="sourceLineNo">184</span> }<a name="line.184"></a>
-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> @Override<a name="line.186"></a>
-<span class="sourceLineNo">187</span>
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="GC_UNRELATED_TYPES",<a
name="line.187"></a>
-<span class="sourceLineNo">188</span> justification="I do not understand
why the complaints, it looks good to me -- FIX")<a name="line.188"></a>
-<span class="sourceLineNo">189</span> protected void chore() {<a
name="line.189"></a>
-<span class="sourceLineNo">190</span> // Prefetch online
tables/namespaces<a name="line.190"></a>
-<span class="sourceLineNo">191</span> for (TableName table:
QuotaCache.this.rsServices.getOnlineTables()) {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> if (table.isSystemTable())
continue;<a name="line.192"></a>
-<span class="sourceLineNo">193</span> if
(!QuotaCache.this.tableQuotaCache.containsKey(table)) {<a name="line.193"></a>
-<span class="sourceLineNo">194</span>
QuotaCache.this.tableQuotaCache.putIfAbsent(table, new QuotaState());<a
name="line.194"></a>
-<span class="sourceLineNo">195</span> }<a name="line.195"></a>
-<span class="sourceLineNo">196</span> String ns =
table.getNamespaceAsString();<a name="line.196"></a>
-<span class="sourceLineNo">197</span> if
(!QuotaCache.this.namespaceQuotaCache.containsKey(ns)) {<a name="line.197"></a>
-<span class="sourceLineNo">198</span>
QuotaCache.this.namespaceQuotaCache.putIfAbsent(ns, new QuotaState());<a
name="line.198"></a>
-<span class="sourceLineNo">199</span> }<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> fetchNamespaceQuotaState();<a
name="line.202"></a>
-<span class="sourceLineNo">203</span> fetchTableQuotaState();<a
name="line.203"></a>
-<span class="sourceLineNo">204</span> fetchUserQuotaState();<a
name="line.204"></a>
-<span class="sourceLineNo">205</span> lastUpdate =
EnvironmentEdgeManager.currentTime();<a name="line.205"></a>
-<span class="sourceLineNo">206</span> }<a name="line.206"></a>
-<span class="sourceLineNo">207</span><a name="line.207"></a>
-<span class="sourceLineNo">208</span> private void
fetchNamespaceQuotaState() {<a name="line.208"></a>
-<span class="sourceLineNo">209</span> fetch("namespace",
QuotaCache.this.namespaceQuotaCache, new Fetcher<String, QuotaState>()
{<a name="line.209"></a>
-<span class="sourceLineNo">210</span> @Override<a name="line.210"></a>
-<span class="sourceLineNo">211</span> public Get makeGet(final
Map.Entry<String, QuotaState> entry) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> return
QuotaUtil.makeGetForNamespaceQuotas(entry.getKey());<a name="line.212"></a>
-<span class="sourceLineNo">213</span> }<a name="line.213"></a>
-<span class="sourceLineNo">214</span><a name="line.214"></a>
-<span class="sourceLineNo">215</span> @Override<a name="line.215"></a>
-<span class="sourceLineNo">216</span> public Map<String,
QuotaState> fetchEntries(final List<Get> gets)<a name="line.216"></a>
-<span class="sourceLineNo">217</span> throws IOException {<a
name="line.217"></a>
-<span class="sourceLineNo">218</span> return
QuotaUtil.fetchNamespaceQuotas(rsServices.getConnection(), gets);<a
name="line.218"></a>
-<span class="sourceLineNo">219</span> }<a name="line.219"></a>
-<span class="sourceLineNo">220</span> });<a name="line.220"></a>
-<span class="sourceLineNo">221</span> }<a name="line.221"></a>
-<span class="sourceLineNo">222</span><a name="line.222"></a>
-<span class="sourceLineNo">223</span> private void fetchTableQuotaState()
{<a name="line.223"></a>
-<span class="sourceLineNo">224</span> fetch("table",
QuotaCache.this.tableQuotaCache, new Fetcher<TableName, QuotaState>() {<a
name="line.224"></a>
-<span class="sourceLineNo">225</span> @Override<a name="line.225"></a>
-<span class="sourceLineNo">226</span> public Get makeGet(final
Map.Entry<TableName, QuotaState> entry) {<a name="line.226"></a>
-<span class="sourceLineNo">227</span> return
QuotaUtil.makeGetForTableQuotas(entry.getKey());<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
-<span class="sourceLineNo">229</span><a name="line.229"></a>
-<span class="sourceLineNo">230</span> @Override<a name="line.230"></a>
-<span class="sourceLineNo">231</span> public Map<TableName,
QuotaState> fetchEntries(final List<Get> gets)<a name="line.231"></a>
-<span class="sourceLineNo">232</span> throws IOException {<a
name="line.232"></a>
-<span class="sourceLineNo">233</span> return
QuotaUtil.fetchTableQuotas(rsServices.getConnection(), gets);<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> }<a name="line.236"></a>
-<span class="sourceLineNo">237</span><a name="line.237"></a>
-<span class="sourceLineNo">238</span> private void fetchUserQuotaState()
{<a name="line.238"></a>
-<span class="sourceLineNo">239</span> final Set<String> namespaces
= QuotaCache.this.namespaceQuotaCache.keySet();<a name="line.239"></a>
-<span class="sourceLineNo">240</span> final Set<TableName> tables =
QuotaCache.this.tableQuotaCache.keySet();<a name="line.240"></a>
-<span class="sourceLineNo">241</span> fetch("user",
QuotaCache.this.userQuotaCache, new Fetcher<String, UserQuotaState>() {<a
name="line.241"></a>
-<span class="sourceLineNo">242</span> @Override<a name="line.242"></a>
-<span class="sourceLineNo">243</span> public Get makeGet(final
Map.Entry<String, UserQuotaState> entry) {<a name="line.243"></a>
-<span class="sourceLineNo">244</span> return
QuotaUtil.makeGetForUserQuotas(entry.getKey(), tables, namespaces);<a
name="line.244"></a>
-<span class="sourceLineNo">245</span> }<a name="line.245"></a>
-<span class="sourceLineNo">246</span><a name="line.246"></a>
-<span class="sourceLineNo">247</span> @Override<a name="line.247"></a>
-<span class="sourceLineNo">248</span> public Map<String,
UserQuotaState> fetchEntries(final List<Get> gets)<a
name="line.248"></a>
-<span class="sourceLineNo">249</span> throws IOException {<a
name="line.249"></a>
-<span class="sourceLineNo">250</span> return
QuotaUtil.fetchUserQuotas(rsServices.getConnection(), gets);<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> }<a name="line.253"></a>
-<span class="sourceLineNo">254</span><a name="line.254"></a>
-<span class="sourceLineNo">255</span> private <K, V extends
QuotaState> void fetch(final String type,<a name="line.255"></a>
-<span class="sourceLineNo">256</span> final ConcurrentHashMap<K,
V> quotasMap, final Fetcher<K, V> fetcher) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> long now =
EnvironmentEdgeManager.currentTime();<a name="line.257"></a>
-<span class="sourceLineNo">258</span> long refreshPeriod = getPeriod();<a
name="line.258"></a>
-<span class="sourceLineNo">259</span> long evictPeriod = refreshPeriod *
EVICT_PERIOD_FACTOR;<a name="line.259"></a>
-<span class="sourceLineNo">260</span><a name="line.260"></a>
-<span class="sourceLineNo">261</span> // Find the quota entries to
update<a name="line.261"></a>
-<span class="sourceLineNo">262</span> List<Get> gets = new
ArrayList<>();<a name="line.262"></a>
-<span class="sourceLineNo">263</span> List<K> toRemove = new
ArrayList<>();<a name="line.263"></a>
-<span class="sourceLineNo">264</span> for (Map.Entry<K, V> entry:
quotasMap.entrySet()) {<a name="line.264"></a>
-<span class="sourceLineNo">265</span> long lastUpdate =
entry.getValue().getLastUpdate();<a name="line.265"></a>
-<span class="sourceLineNo">266</span> long lastQuery =
entry.getValue().getLastQuery();<a name="line.266"></a>
-<span class="sourceLineNo">267</span> if (lastQuery > 0 &&
(now - lastQuery) >= evictPeriod) {<a name="line.267"></a>
-<span class="sourceLineNo">268</span> toRemove.add(entry.getKey());<a
name="line.268"></a>
-<span class="sourceLineNo">269</span> } else if (TEST_FORCE_REFRESH ||
(now - lastUpdate) >= refreshPeriod) {<a name="line.269"></a>
-<span class="sourceLineNo">270</span>
gets.add(fetcher.makeGet(entry));<a name="line.270"></a>
-<span class="sourceLineNo">271</span> }<a name="line.271"></a>
-<span class="sourceLineNo">272</span> }<a name="line.272"></a>
-<span class="sourceLineNo">273</span><a name="line.273"></a>
-<span class="sourceLineNo">274</span> for (final K key: toRemove) {<a
name="line.274"></a>
-<span class="sourceLineNo">275</span> if (LOG.isTraceEnabled()) {<a
name="line.275"></a>
-<span class="sourceLineNo">276</span> LOG.trace("evict " + type + "
key=" + key);<a name="line.276"></a>
-<span class="sourceLineNo">277</span> }<a name="line.277"></a>
-<span class="sourceLineNo">278</span> quotasMap.remove(key);<a
name="line.278"></a>
-<span class="sourceLineNo">279</span> }<a name="line.279"></a>
-<span class="sourceLineNo">280</span><a name="line.280"></a>
-<span class="sourceLineNo">281</span> // fetch and update the quota
entries<a name="line.281"></a>
-<span class="sourceLineNo">282</span> if (!gets.isEmpty()) {<a
name="line.282"></a>
-<span class="sourceLineNo">283</span> try {<a name="line.283"></a>
-<span class="sourceLineNo">284</span> for (Map.Entry<K, V>
entry: fetcher.fetchEntries(gets).entrySet()) {<a name="line.284"></a>
-<span class="sourceLineNo">285</span> V quotaInfo =
quotasMap.putIfAbsent(entry.getKey(), entry.getValue());<a name="line.285"></a>
-<span class="sourceLineNo">286</span> if (quotaInfo != null) {<a
name="line.286"></a>
-<span class="sourceLineNo">287</span>
quotaInfo.update(entry.getValue());<a name="line.287"></a>
-<span class="sourceLineNo">288</span> }<a name="line.288"></a>
-<span class="sourceLineNo">289</span><a name="line.289"></a>
-<span class="sourceLineNo">290</span> if (LOG.isTraceEnabled()) {<a
name="line.290"></a>
-<span class="sourceLineNo">291</span> LOG.trace("refresh " + type
+ " key=" + entry.getKey() + " quotas=" + quotaInfo);<a name="line.291"></a>
-<span class="sourceLineNo">292</span> }<a name="line.292"></a>
-<span class="sourceLineNo">293</span> }<a name="line.293"></a>
-<span class="sourceLineNo">294</span> } catch (IOException e) {<a
name="line.294"></a>
-<span class="sourceLineNo">295</span> LOG.warn("Unable to read " +
type + " from quota table", e);<a name="line.295"></a>
-<span class="sourceLineNo">296</span> }<a name="line.296"></a>
-<span class="sourceLineNo">297</span> }<a name="line.297"></a>
-<span class="sourceLineNo">298</span> }<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> static interface Fetcher<Key,
Value> {<a name="line.301"></a>
-<span class="sourceLineNo">302</span> Get makeGet(Map.Entry<Key,
Value> entry);<a name="line.302"></a>
-<span class="sourceLineNo">303</span> Map<Key, Value>
fetchEntries(List<Get> gets) throws IOException;<a name="line.303"></a>
-<span class="sourceLineNo">304</span> }<a name="line.304"></a>
-<span class="sourceLineNo">305</span>}<a name="line.305"></a>
+<span class="sourceLineNo">023</span>import
org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import
org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a
name="line.24"></a>
+<span class="sourceLineNo">025</span><a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.io.IOException;<a
name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.ArrayList;<a
name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.List;<a
name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Map;<a
name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.Set;<a
name="line.30"></a>
+<span class="sourceLineNo">031</span>import
java.util.concurrent.ConcurrentHashMap;<a name="line.31"></a>
+<span class="sourceLineNo">032</span><a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.logging.Log;<a
name="line.33"></a>
+<span class="sourceLineNo">034</span>import
org.apache.commons.logging.LogFactory;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import
org.apache.hadoop.conf.Configuration;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import
org.apache.hadoop.hbase.ScheduledChore;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import
org.apache.hadoop.hbase.Stoppable;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import
org.apache.hadoop.hbase.TableName;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import
org.apache.yetus.audience.InterfaceAudience;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import
org.apache.yetus.audience.InterfaceStability;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import
org.apache.hadoop.hbase.client.Get;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import
org.apache.hadoop.hbase.regionserver.RegionServerServices;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import
org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import
org.apache.hadoop.security.UserGroupInformation;<a name="line.44"></a>
+<span class="sourceLineNo">045</span><a name="line.45"></a>
+<span class="sourceLineNo">046</span>/**<a name="line.46"></a>
+<span class="sourceLineNo">047</span> * Cache that keeps track of the quota
settings for the users and tables that<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * are interacting with it.<a
name="line.48"></a>
+<span class="sourceLineNo">049</span> *<a name="line.49"></a>
+<span class="sourceLineNo">050</span> * To avoid blocking the operations if
the requested quota is not in cache<a name="line.50"></a>
+<span class="sourceLineNo">051</span> * an "empty quota" will be returned and
the request to fetch the quota information<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * will be enqueued for the next
refresh.<a name="line.52"></a>
+<span class="sourceLineNo">053</span> *<a name="line.53"></a>
+<span class="sourceLineNo">054</span> * TODO: At the moment the Cache has a
Chore that will be triggered every 5min<a name="line.54"></a>
+<span class="sourceLineNo">055</span> * or on cache-miss events. Later the
Quotas will be pushed using the notification system.<a name="line.55"></a>
+<span class="sourceLineNo">056</span> */<a name="line.56"></a>
+<span class="sourceLineNo">057</span>@InterfaceAudience.Private<a
name="line.57"></a>
+<span class="sourceLineNo">058</span>@InterfaceStability.Evolving<a
name="line.58"></a>
+<span class="sourceLineNo">059</span>public class QuotaCache implements
Stoppable {<a name="line.59"></a>
+<span class="sourceLineNo">060</span> private static final Log LOG =
LogFactory.getLog(QuotaCache.class);<a name="line.60"></a>
+<span class="sourceLineNo">061</span><a name="line.61"></a>
+<span class="sourceLineNo">062</span> public static final String
REFRESH_CONF_KEY = "hbase.quota.refresh.period";<a name="line.62"></a>
+<span class="sourceLineNo">063</span> private static final int
REFRESH_DEFAULT_PERIOD = 5 * 60000; // 5min<a name="line.63"></a>
+<span class="sourceLineNo">064</span> private static final int
EVICT_PERIOD_FACTOR = 5; // N * REFRESH_DEFAULT_PERIOD<a name="line.64"></a>
+<span class="sourceLineNo">065</span><a name="line.65"></a>
+<span class="sourceLineNo">066</span> // for testing purpose only, enforce
the cache to be always refreshed<a name="line.66"></a>
+<span class="sourceLineNo">067</span> static boolean TEST_FORCE_REFRESH =
false;<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span> private final
ConcurrentHashMap<String, QuotaState> namespaceQuotaCache = new
ConcurrentHashMap<>();<a name="line.69"></a>
+<span class="sourceLineNo">070</span> private final
ConcurrentHashMap<TableName, QuotaState> tableQuotaCache = new
ConcurrentHashMap<>();<a name="line.70"></a>
+<span class="sourceLineNo">071</span> private final
ConcurrentHashMap<String, UserQuotaState> userQuotaCache = new
ConcurrentHashMap<>();<a name="line.71"></a>
+<span class="sourceLineNo">072</span> private final RegionServerServices
rsServices;<a name="line.72"></a>
+<span class="sourceLineNo">073</span><a name="line.73"></a>
+<span class="sourceLineNo">074</span> private QuotaRefresherChore
refreshChore;<a name="line.74"></a>
+<span class="sourceLineNo">075</span> private boolean stopped = true;<a
name="line.75"></a>
+<span class="sourceLineNo">076</span><a name="line.76"></a>
+<span class="sourceLineNo">077</span> public QuotaCache(final
RegionServerServices rsServices) {<a name="line.77"></a>
+<span class="sourceLineNo">078</span> this.rsServices = rsServices;<a
name="line.78"></a>
+<span class="sourceLineNo">079</span> }<a name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
+<span class="sourceLineNo">081</span> public void start() throws IOException
{<a name="line.81"></a>
+<span class="sourceLineNo">082</span> stopped = false;<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span> // TODO: This will be replaced once
we have the notification bus ready.<a name="line.84"></a>
+<span class="sourceLineNo">085</span> Configuration conf =
rsServices.getConfiguration();<a name="line.85"></a>
+<span class="sourceLineNo">086</span> int period =
conf.getInt(REFRESH_CONF_KEY, REFRESH_DEFAULT_PERIOD);<a name="line.86"></a>
+<span class="sourceLineNo">087</span> refreshChore = new
QuotaRefresherChore(period, this);<a name="line.87"></a>
+<span class="sourceLineNo">088</span>
rsServices.getChoreService().scheduleChore(refreshChore);<a name="line.88"></a>
+<span class="sourceLineNo">089</span> }<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> @Override<a name="line.91"></a>
+<span class="sourceLineNo">092</span> public void stop(final String why) {<a
name="line.92"></a>
+<span class="sourceLineNo">093</span> stopped = true;<a name="line.93"></a>
+<span class="sourceLineNo">094</span> }<a name="line.94"></a>
+<span class="sourceLineNo">095</span><a name="line.95"></a>
+<span class="sourceLineNo">096</span> @Override<a name="line.96"></a>
+<span class="sourceLineNo">097</span> public boolean isStopped() {<a
name="line.97"></a>
+<span class="sourceLineNo">098</span> return stopped;<a name="line.98"></a>
+<span class="sourceLineNo">099</span> }<a name="line.99"></a>
+<span class="sourceLineNo">100</span><a name="line.100"></a>
+<span class="sourceLineNo">101</span> /**<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * Returns the limiter associated to
the specified user/table.<a name="line.102"></a>
+<span class="sourceLineNo">103</span> *<a name="line.103"></a>
+<span class="sourceLineNo">104</span> * @param ugi the user to limit<a
name="line.104"></a>
+<span class="sourceLineNo">105</span> * @param table the table to limit<a
name="line.105"></a>
+<span class="sourceLineNo">106</span> * @return the limiter associated to
the specified user/table<a name="line.106"></a>
+<span class="sourceLineNo">107</span> */<a name="line.107"></a>
+<span class="sourceLineNo">108</span> public QuotaLimiter
getUserLimiter(final UserGroupInformation ugi, final TableName table) {<a
name="line.108"></a>
+<span class="sourceLineNo">109</span> if (table.isSystemTable()) {<a
name="line.109"></a>
+<span class="sourceLineNo">110</span> return NoopQuotaLimiter.get();<a
name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span> return
getUserQuotaState(ugi).getTableLimiter(table);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span> /**<a name="line.115"></a>
+<span class="sourceLineNo">116</span> * Returns the QuotaState associated to
the specified user.<a name="line.116"></a>
+<span class="sourceLineNo">117</span> * @param ugi the user<a
name="line.117"></a>
+<span class="sourceLineNo">118</span> * @return the quota info associated to
specified user<a name="line.118"></a>
+<span class="sourceLineNo">119</span> */<a name="line.119"></a>
+<span class="sourceLineNo">120</span> public UserQuotaState
getUserQuotaState(final UserGroupInformation ugi) {<a name="line.120"></a>
+<span class="sourceLineNo">121</span> return
computeIfAbsent(userQuotaCache, ugi.getShortUserName(), UserQuotaState::new,<a
name="line.121"></a>
+<span class="sourceLineNo">122</span> this::triggerCacheRefresh);<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> /**<a name="line.125"></a>
+<span class="sourceLineNo">126</span> * Returns the limiter associated to
the specified table.<a name="line.126"></a>
+<span class="sourceLineNo">127</span> *<a name="line.127"></a>
+<span class="sourceLineNo">128</span> * @param table the table to limit<a
name="line.128"></a>
+<span class="sourceLineNo">129</span> * @return the limiter associated to
the specified table<a name="line.129"></a>
+<span class="sourceLineNo">130</span> */<a name="line.130"></a>
+<span class="sourceLineNo">131</span> public QuotaLimiter
getTableLimiter(final TableName table) {<a name="line.131"></a>
+<span class="sourceLineNo">132</span> return
getQuotaState(this.tableQuotaCache, table).getGlobalLimiter();<a
name="line.132"></a>
+<span class="sourceLineNo">133</span> }<a name="line.133"></a>
+<span class="sourceLineNo">134</span><a name="line.134"></a>
+<span class="sourceLineNo">135</span> /**<a name="line.135"></a>
+<span class="sourceLineNo">136</span> * Returns the limiter associated to
the specified namespace.<a name="line.136"></a>
+<span class="sourceLineNo">137</span> *<a name="line.137"></a>
+<span class="sourceLineNo">138</span> * @param namespace the namespace to
limit<a name="line.138"></a>
+<span class="sourceLineNo">139</span> * @return the limiter associated to
the specified namespace<a name="line.139"></a>
+<span class="sourceLineNo">140</span> */<a name="line.140"></a>
+<span class="sourceLineNo">141</span> public QuotaLimiter
getNamespaceLimiter(final String namespace) {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> return
getQuotaState(this.namespaceQuotaCache, namespace).getGlobalLimiter();<a
name="line.142"></a>
+<span class="sourceLineNo">143</span> }<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> * Returns the QuotaState requested. If
the quota info is not in cache an empty one will be<a name="line.146"></a>
+<span class="sourceLineNo">147</span> * returned and the quota request will
be enqueued for the next cache refresh.<a name="line.147"></a>
+<span class="sourceLineNo">148</span> */<a name="line.148"></a>
+<span class="sourceLineNo">149</span> private <K> QuotaState
getQuotaState(final ConcurrentHashMap<K, QuotaState> quotasMap,<a
name="line.149"></a>
+<span class="sourceLineNo">150</span> final K key) {<a
name="line.150"></a>
+<span class="sourceLineNo">151</span> return computeIfAbsent(quotasMap,
key, QuotaState::new, this::triggerCacheRefresh);<a name="line.151"></a>
+<span class="sourceLineNo">152</span> }<a name="line.152"></a>
+<span class="sourceLineNo">153</span><a name="line.153"></a>
+<span class="sourceLineNo">154</span> @VisibleForTesting<a
name="line.154"></a>
+<span class="sourceLineNo">155</span> void triggerCacheRefresh() {<a
name="line.155"></a>
+<span class="sourceLineNo">156</span> refreshChore.triggerNow();<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> @VisibleForTesting<a
name="line.159"></a>
+<span class="sourceLineNo">160</span> long getLastUpdate() {<a
name="line.160"></a>
+<span class="sourceLineNo">161</span> return refreshChore.lastUpdate;<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> @VisibleForTesting<a
name="line.164"></a>
+<span class="sourceLineNo">165</span> Map<String, QuotaState>
getNamespaceQuotaCache() {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> return namespaceQuotaCache;<a
name="line.166"></a>
+<span class="sourceLineNo">167</span> }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span> @VisibleForTesting<a
name="line.169"></a>
+<span class="sourceLineNo">170</span> Map<TableName, QuotaState>
getTableQuotaCache() {<a name="line.170"></a>
+<span class="sourceLineNo">171</span> return tableQuotaCache;<a
name="line.171"></a>
+<span class="sourceLineNo">172</span> }<a name="line.172"></a>
+<span class="sourceLineNo">173</span><a name="line.173"></a>
+<span class="sourceLineNo">174</span> @VisibleForTesting<a
name="line.174"></a>
+<span class="sourceLineNo">175</span> Map<String, UserQuotaState>
getUserQuotaCache() {<a name="line.175"></a>
+<span class="sourceLineNo">176</span> return userQuotaCache;<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> // TODO: Remove this once we have the
notification bus<a name="line.179"></a>
+<span class="sourceLineNo">180</span> private class QuotaRefresherChore
extends ScheduledChore {<a name="line.180"></a>
+<span class="sourceLineNo">181</span> private long lastUpdate = 0;<a
name="line.181"></a>
+<span class="sourceLineNo">182</span><a name="line.182"></a>
+<span class="sourceLineNo">183</span> public QuotaRefresherChore(final int
period, final Stoppable stoppable) {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> super("QuotaRefresherChore",
stoppable, period);<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> @Override<a name="line.187"></a>
+<span class="sourceLineNo">188</span>
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="GC_UNRELATED_TYPES",<a
name="line.188"></a>
+<span class="sourceLineNo">189</span> justification="I do not understand
why the complaints, it looks good to me -- FIX")<a name="line.189"></a>
+<span class="sourceLineNo">190</span> protected void chore() {<a
name="line.190"></a>
+<span class="sourceLineNo">191</span> // Prefetch online
tables/namespaces<a name="line.191"></a>
+<span class="sourceLineNo">192</span> for (TableName table:
((HRegionServer)QuotaCache.this.rsServices).getOnlineTables()) {<a
name="line.192"></a>
+<span class="sourceLineNo">193</span> if (table.isSystemTable())
continue;<a name="line.193"></a>
+<span class="sourceLineNo">194</span> if
(!QuotaCache.this.tableQuotaCache.containsKey(table)) {<a name="line.194"></a>
+<span class="sourceLineNo">195</span>
QuotaCache.this.tableQuotaCache.putIfAbsent(table, new QuotaState());<a
name="line.195"></a>
+<span class="sourceLineNo">196</span> }<a name="line.196"></a>
+<span class="sourceLineNo">197</span> String ns =
table.getNamespaceAsString();<a name="line.197"></a>
+<span class="sourceLineNo">198</span> if
(!QuotaCache.this.namespaceQuotaCache.containsKey(ns)) {<a name="line.198"></a>
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QuotaCache.this.namespaceQuotaCache.putIfAbsent(ns, new QuotaState());<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><a name="line.202"></a>
+<span class="sourceLineNo">203</span> fetchNamespaceQuotaState();<a
name="line.203"></a>
+<span class="sourceLineNo">204</span> fetchTableQuotaState();<a
name="line.204"></a>
+<span class="sourceLineNo">205</span> fetchUserQuotaState();<a
name="line.205"></a>
+<span class="sourceLineNo">206</span> lastUpdate =
EnvironmentEdgeManager.currentTime();<a name="line.206"></a>
+<span class="sourceLineNo">207</span> }<a name="line.207"></a>
+<span class="sourceLineNo">208</span><a name="line.208"></a>
+<span class="sourceLineNo">209</span> private void
fetchNamespaceQuotaState() {<a name="line.209"></a>
+<span class="sourceLineNo">210</span> fetch("namespace",
QuotaCache.this.namespaceQuotaCache, new Fetcher<String, QuotaState>()
{<a name="line.210"></a>
+<span class="sourceLineNo">211</span> @Override<a name="line.211"></a>
+<span class="sourceLineNo">212</span> public Get makeGet(final
Map.Entry<String, QuotaState> entry) {<a name="line.212"></a>
+<span class="sourceLineNo">213</span> return
QuotaUtil.makeGetForNamespaceQuotas(entry.getKey());<a name="line.213"></a>
+<span class="sourceLineNo">214</span> }<a name="line.214"></a>
+<span class="sourceLineNo">215</span><a name="line.215"></a>
+<span class="sourceLineNo">216</span> @Override<a name="line.216"></a>
+<span class="sourceLineNo">217</span> public Map<String,
QuotaState> fetchEntries(final List<Get> gets)<a name="line.217"></a>
+<span class="sourceLineNo">218</span> throws IOException {<a
name="line.218"></a>
+<span class="sourceLineNo">219</span> return
QuotaUtil.fetchNamespaceQuotas(rsServices.getConnection(), gets);<a
name="line.219"></a>
+<span class="sourceLineNo">220</span> }<a name="line.220"></a>
+<span class="sourceLineNo">221</span> });<a name="line.221"></a>
+<span class="sourceLineNo">222</span> }<a name="line.222"></a>
+<span class="sourceLineNo">223</span><a name="line.223"></a>
+<span class="sourceLineNo">224</span> private void fetchTableQuotaState()
{<a name="line.224"></a>
+<span class="sourceLineNo">225</span> fetch("table",
QuotaCache.this.tableQuotaCache, new Fetcher<TableName, QuotaState>() {<a
name="line.225"></a>
+<span class="sourceLineNo">226</span> @Override<a name="line.226"></a>
+<span class="sourceLineNo">227</span> public Get makeGet(final
Map.Entry<TableName, QuotaState> entry) {<a name="line.227"></a>
+<span class="sourceLineNo">228</span> return
QuotaUtil.makeGetForTableQuotas(entry.getKey());<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> @Override<a name="line.231"></a>
+<span class="sourceLineNo">232</span> public Map<TableName,
QuotaState> fetchEntries(final List<Get> gets)<a name="line.232"></a>
+<span class="sourceLineNo">233</span> throws IOException {<a
name="line.233"></a>
+<span class="sourceLineNo">234</span> return
QuotaUtil.fetchTableQuotas(rsServices.getConnection(), gets);<a
name="line.234"></a>
+<span class="sourceLineNo">235</span> }<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><a name="line.238"></a>
+<span class="sourceLineNo">239</span> private void fetchUserQuotaState()
{<a name="line.239"></a>
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= QuotaCache.this.namespaceQuotaCache.keySet();<a name="line.240"></a>
+<span class="sourceLineNo">241</span> final Set<TableName> tables =
QuotaCache.this.tableQuotaCache.keySet();<a name="line.241"></a>
+<span class="sourceLineNo">242</span> fetch("user",
QuotaCache.this.userQuotaCache, new Fetcher<String, UserQuotaState>() {<a
name="line.242"></a>
+<span class="sourceLineNo">243</span> @Override<a name="line.243"></a>
+<span class="sourceLineNo">244</span> public Get makeGet(final
Map.Entry<String, UserQuotaState> entry) {<a name="line.244"></a>
+<span class="sourceLineNo">245</span> return
QuotaUtil.makeGetForUserQuotas(entry.getKey(), tables, namespaces);<a
name="line.245"></a>
+<span class="sourceLineNo">246</span> }<a name="line.246"></a>
+<span class="sourceLineNo">247</span><a name="line.247"></a>
+<span class="sourceLineNo">248</span> @Override<a name="line.248"></a>
+<span class="sourceLineNo">249</span> public Map<String,
UserQuotaState> fetchEntries(final List<Get> gets)<a
name="line.249"></a>
+<span class="sourceLineNo">250</span> throws IOException {<a
name="line.250"></a>
+<span class="sourceLineNo">251</span> return
QuotaUtil.fetchUserQuotas(rsServices.getConnection(), gets);<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><a name="line.255"></a>
+<span class="sourceLineNo">256</span> private <K, V extends
QuotaState> void fetch(final String type,<a name="line.256"></a>
+<span class="sourceLineNo">257</span> final ConcurrentHashMap<K,
V> quotasMap, final Fetcher<K, V> fetcher) {<a name="line.257"></a>
+<span class="sourceLineNo">258</span> long now =
EnvironmentEdgeManager.currentTime();<a name="line.258"></a>
+<span class="sourceLineNo">259</span> long refreshPeriod = getPeriod();<a
name="line.259"></a>
+<span class="sourceLineNo">260</span> long evictPeriod = refreshPeriod *
EVICT_PERIOD_FACTOR;<a name="line.260"></a>
+<span class="sourceLineNo">261</span><a name="line.261"></a>
+<span class="sourceLineNo">262</span> // Find the quota entries to
update<a name="line.262"></a>
+<span class="sourceLineNo">263</span> List<Get> gets = new
ArrayList<>();<a name="line.263"></a>
+<span class="sourceLineNo">264</span> List<K> toRemove = new
ArrayList<>();<a name="line.264"></a>
+<span class="sourceLineNo">265</span> for (Map.Entry<K, V> entry:
quotasMap.entrySet()) {<a name="line.265"></a>
+<span class="sourceLineNo">266</span> long lastUpdate =
entry.getValue().getLastUpdate();<a name="line.266"></a>
+<span class="sourceLineNo">267</span> long lastQuery =
entry.getValue().getLastQuery();<a name="line.267"></a>
+<span class="sourceLineNo">268</span> if (lastQuery > 0 &&
(now - lastQuery) >= evictPeriod) {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> toRemove.add(entry.getKey());<a
name="line.269"></a>
+<span class="sourceLineNo">270</span> } else if (TEST_FORCE_REFRESH ||
(now - lastUpdate) >= refreshPeriod) {<a name="line.270"></a>
+<span class="sourceLineNo">271</span>
gets.add(fetcher.makeGet(entry));<a name="line.271"></a>
+<span class="sourceLineNo">272</span> }<a name="line.272"></a>
+<span class="sourceLineNo">273</span> }<a name="line.273"></a>
+<span class="sourceLineNo">274</span><a name="line.274"></a>
+<span class="sourceLineNo">275</span> for (final K key: toRemove) {<a
name="line.275"></a>
+<span class="sourceLineNo">276</span> if (LOG.isTraceEnabled()) {<a
name="line.276"></a>
+<span class="sourceLineNo">277</span> LOG.trace("evict " + type + "
key=" + key);<a name="line.277"></a>
+<span class="sourceLineNo">278</span> }<a name="line.278"></a>
+<span class="sourceLineNo">279</span> quotasMap.remove(key);<a
name="line.279"></a>
+<span class="sourceLineNo">280</span> }<a name="line.280"></a>
+<span class="sourceLineNo">281</span><a name="line.281"></a>
+<span class="sourceLineNo">282</span> // fetch and update the quota
entries<a name="line.282"></a>
+<span class="sourceLineNo">283</span> if (!gets.isEmpty()) {<a
name="line.283"></a>
+<span class="sourceLineNo">284</span> try {<a name="line.284"></a>
+<span class="sourceLineNo">285</span> for (Map.Entry<K, V>
entry: fetcher.fetchEntries(gets).entrySet()) {<a name="line.285"></a>
+<span class="sourceLineNo">286</span> V quotaInfo =
quotasMap.putIfAbsent(entry.getKey(), entry.getValue());<a name="line.286"></a>
+<span class="sourceLineNo">287</span> if (quotaInfo != null) {<a
name="line.287"></a>
+<span class="sourceLineNo">288</span>
quotaInfo.update(entry.getValue());<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> if (LOG.isTraceEnabled()) {<a
name="line.291"></a>
+<span class="sourceLineNo">292</span> LOG.trace("refresh " + type
+ " key=" + entry.getKey() + " quotas=" + quotaInfo);<a name="line.292"></a>
+<span class="sourceLineNo">293</span> }<a name="line.293"></a>
+<span class="sourceLineNo">294</span> }<a name="line.294"></a>
+<span class="sourceLineNo">295</span> } catch (IOException e) {<a
name="line.295"></a>
+<span class="sourceLineNo">296</span> LOG.warn("Unable to read " +
type + " from quota table", e);<a name="line.296"></a>
+<span class="sourceLineNo">297</span> }<a name="line.297"></a>
+<span class="sourceLineNo">298</span> }<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> static interface Fetcher<Key,
Value> {<a name="line.302"></a>
+<span class="sourceLineNo">303</span> Get makeGet(Map.Entry<Key,
Value> entry);<a name="line.303"></a>
+<span class="sourceLineNo">304</span> Map<Key, Value>
fetchEntries(List<Get> gets) throws IOException;<a name="line.304"></a>
+<span class="sourceLineNo">305</span> }<a name="line.305"></a>
+<span class="sourceLineNo">306</span>}<a name="line.306"></a>
