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Posted to commits@hbase.apache.org by gi...@apache.org on 2019/01/02 14:53:24 UTC
[24/51] [partial] hbase-site git commit: Published site at
e4b6b4afb933a961f543537875f87a2dc62d3757.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/849d84a8/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.html b/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.html
index c4e8c8b..aa58108 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.html
@@ -82,602 +82,613 @@
<span class="sourceLineNo">074</span> public static final String USER_COPROCESSORS_ENABLED_CONF_KEY =<a name="line.74"></a>
<span class="sourceLineNo">075</span> "hbase.coprocessor.user.enabled";<a name="line.75"></a>
<span class="sourceLineNo">076</span> public static final boolean DEFAULT_USER_COPROCESSORS_ENABLED = true;<a name="line.76"></a>
-<span class="sourceLineNo">077</span><a name="line.77"></a>
-<span class="sourceLineNo">078</span> private static final Logger LOG = LoggerFactory.getLogger(CoprocessorHost.class);<a name="line.78"></a>
-<span class="sourceLineNo">079</span> protected Abortable abortable;<a name="line.79"></a>
-<span class="sourceLineNo">080</span> /** Ordered set of loaded coprocessors with lock */<a name="line.80"></a>
-<span class="sourceLineNo">081</span> protected final SortedList<E> coprocEnvironments =<a name="line.81"></a>
-<span class="sourceLineNo">082</span> new SortedList<>(new EnvironmentPriorityComparator());<a name="line.82"></a>
-<span class="sourceLineNo">083</span> protected Configuration conf;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> // unique file prefix to use for local copies of jars when classloading<a name="line.84"></a>
-<span class="sourceLineNo">085</span> protected String pathPrefix;<a name="line.85"></a>
-<span class="sourceLineNo">086</span> protected AtomicInteger loadSequence = new AtomicInteger();<a name="line.86"></a>
-<span class="sourceLineNo">087</span><a name="line.87"></a>
-<span class="sourceLineNo">088</span> public CoprocessorHost(Abortable abortable) {<a name="line.88"></a>
-<span class="sourceLineNo">089</span> this.abortable = abortable;<a name="line.89"></a>
-<span class="sourceLineNo">090</span> this.pathPrefix = UUID.randomUUID().toString();<a name="line.90"></a>
-<span class="sourceLineNo">091</span> }<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span> /**<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * Not to be confused with the per-object _coprocessors_ (above),<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * coprocessorNames is static and stores the set of all coprocessors ever<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * loaded by any thread in this JVM. It is strictly additive: coprocessors are<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * added to coprocessorNames, by checkAndLoadInstance() but are never removed, since<a name="line.97"></a>
-<span class="sourceLineNo">098</span> * the intention is to preserve a history of all loaded coprocessors for<a name="line.98"></a>
-<span class="sourceLineNo">099</span> * diagnosis in case of server crash (HBASE-4014).<a name="line.99"></a>
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-<span class="sourceLineNo">102</span> Collections.synchronizedSet(new HashSet<String>());<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span> public static Set<String> getLoadedCoprocessors() {<a name="line.104"></a>
-<span class="sourceLineNo">105</span> synchronized (coprocessorNames) {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> return new HashSet(coprocessorNames);<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> /**<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * Used to create a parameter to the HServerLoad constructor so that<a name="line.111"></a>
-<span class="sourceLineNo">112</span> * HServerLoad can provide information about the coprocessors loaded by this<a name="line.112"></a>
-<span class="sourceLineNo">113</span> * regionserver.<a name="line.113"></a>
-<span class="sourceLineNo">114</span> * (HBASE-4070: Improve region server metrics to report loaded coprocessors<a name="line.114"></a>
-<span class="sourceLineNo">115</span> * to master).<a name="line.115"></a>
-<span class="sourceLineNo">116</span> */<a name="line.116"></a>
-<span class="sourceLineNo">117</span> public Set<String> getCoprocessors() {<a name="line.117"></a>
-<span class="sourceLineNo">118</span> Set<String> returnValue = new TreeSet<>();<a name="line.118"></a>
-<span class="sourceLineNo">119</span> for (E e: coprocEnvironments) {<a name="line.119"></a>
-<span class="sourceLineNo">120</span> returnValue.add(e.getInstance().getClass().getSimpleName());<a name="line.120"></a>
-<span class="sourceLineNo">121</span> }<a name="line.121"></a>
-<span class="sourceLineNo">122</span> return returnValue;<a name="line.122"></a>
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-<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> * Load system coprocessors once only. Read the class names from configuration.<a name="line.126"></a>
-<span class="sourceLineNo">127</span> * Called by constructor.<a name="line.127"></a>
-<span class="sourceLineNo">128</span> */<a name="line.128"></a>
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-<span class="sourceLineNo">131</span> DEFAULT_COPROCESSORS_ENABLED);<a name="line.131"></a>
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-<span class="sourceLineNo">133</span> return;<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> Class<?> implClass;<a name="line.136"></a>
-<span class="sourceLineNo">137</span><a name="line.137"></a>
-<span class="sourceLineNo">138</span> // load default coprocessors from configure file<a name="line.138"></a>
-<span class="sourceLineNo">139</span> String[] defaultCPClasses = conf.getStrings(confKey);<a name="line.139"></a>
-<span class="sourceLineNo">140</span> if (defaultCPClasses == null || defaultCPClasses.length == 0)<a name="line.140"></a>
-<span class="sourceLineNo">141</span> return;<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> int priority = Coprocessor.PRIORITY_SYSTEM;<a name="line.143"></a>
-<span class="sourceLineNo">144</span> for (String className : defaultCPClasses) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> className = className.trim();<a name="line.145"></a>
-<span class="sourceLineNo">146</span> if (findCoprocessor(className) != null) {<a name="line.146"></a>
-<span class="sourceLineNo">147</span> // If already loaded will just continue<a name="line.147"></a>
-<span class="sourceLineNo">148</span> LOG.warn("Attempted duplicate loading of " + className + "; skipped");<a name="line.148"></a>
-<span class="sourceLineNo">149</span> continue;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> }<a name="line.150"></a>
-<span class="sourceLineNo">151</span> ClassLoader cl = this.getClass().getClassLoader();<a name="line.151"></a>
-<span class="sourceLineNo">152</span> Thread.currentThread().setContextClassLoader(cl);<a name="line.152"></a>
-<span class="sourceLineNo">153</span> try {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> implClass = cl.loadClass(className);<a name="line.154"></a>
-<span class="sourceLineNo">155</span> // Add coprocessors as we go to guard against case where a coprocessor is specified twice<a name="line.155"></a>
-<span class="sourceLineNo">156</span> // in the configuration<a name="line.156"></a>
-<span class="sourceLineNo">157</span> E env = checkAndLoadInstance(implClass, priority, conf);<a name="line.157"></a>
-<span class="sourceLineNo">158</span> if (env != null) {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> this.coprocEnvironments.add(env);<a name="line.159"></a>
-<span class="sourceLineNo">160</span> LOG.info("System coprocessor {} loaded, priority={}.", className, priority);<a name="line.160"></a>
-<span class="sourceLineNo">161</span> ++priority;<a name="line.161"></a>
-<span class="sourceLineNo">162</span> }<a name="line.162"></a>
-<span class="sourceLineNo">163</span> } catch (Throwable t) {<a name="line.163"></a>
-<span class="sourceLineNo">164</span> // We always abort if system coprocessors cannot be loaded<a name="line.164"></a>
-<span class="sourceLineNo">165</span> abortServer(className, t);<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> }<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> * Load a coprocessor implementation into the host<a name="line.171"></a>
-<span class="sourceLineNo">172</span> * @param path path to implementation jar<a name="line.172"></a>
-<span class="sourceLineNo">173</span> * @param className the main class name<a name="line.173"></a>
-<span class="sourceLineNo">174</span> * @param priority chaining priority<a name="line.174"></a>
-<span class="sourceLineNo">175</span> * @param conf configuration for coprocessor<a name="line.175"></a>
-<span class="sourceLineNo">176</span> * @throws java.io.IOException Exception<a name="line.176"></a>
-<span class="sourceLineNo">177</span> */<a name="line.177"></a>
-<span class="sourceLineNo">178</span> public E load(Path path, String className, int priority,<a name="line.178"></a>
-<span class="sourceLineNo">179</span> Configuration conf) throws IOException {<a name="line.179"></a>
-<span class="sourceLineNo">180</span> String[] includedClassPrefixes = null;<a name="line.180"></a>
-<span class="sourceLineNo">181</span> if (conf.get(HConstants.CP_HTD_ATTR_INCLUSION_KEY) != null){<a name="line.181"></a>
-<span class="sourceLineNo">182</span> String prefixes = conf.get(HConstants.CP_HTD_ATTR_INCLUSION_KEY);<a name="line.182"></a>
-<span class="sourceLineNo">183</span> includedClassPrefixes = prefixes.split(";");<a name="line.183"></a>
-<span class="sourceLineNo">184</span> }<a name="line.184"></a>
-<span class="sourceLineNo">185</span> return load(path, className, priority, conf, includedClassPrefixes);<a name="line.185"></a>
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-<span class="sourceLineNo">187</span><a name="line.187"></a>
-<span class="sourceLineNo">188</span> /**<a name="line.188"></a>
-<span class="sourceLineNo">189</span> * Load a coprocessor implementation into the host<a name="line.189"></a>
-<span class="sourceLineNo">190</span> * @param path path to implementation jar<a name="line.190"></a>
-<span class="sourceLineNo">191</span> * @param className the main class name<a name="line.191"></a>
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-<span class="sourceLineNo">199</span> Class<?> implClass;<a name="line.199"></a>
-<span class="sourceLineNo">200</span> LOG.debug("Loading coprocessor class " + className + " with path " +<a name="line.200"></a>
-<span class="sourceLineNo">201</span> path + " and priority " + priority);<a name="line.201"></a>
-<span class="sourceLineNo">202</span><a name="line.202"></a>
-<span class="sourceLineNo">203</span> ClassLoader cl = null;<a name="line.203"></a>
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-<span class="sourceLineNo">205</span> try {<a name="line.205"></a>
-<span class="sourceLineNo">206</span> implClass = getClass().getClassLoader().loadClass(className);<a name="line.206"></a>
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-<span class="sourceLineNo">208</span> throw new IOException("No jar path specified for " + className);<a name="line.208"></a>
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-<span class="sourceLineNo">211</span> cl = CoprocessorClassLoader.getClassLoader(<a name="line.211"></a>
-<span class="sourceLineNo">212</span> path, getClass().getClassLoader(), pathPrefix, conf);<a name="line.212"></a>
-<span class="sourceLineNo">213</span> try {<a name="line.213"></a>
-<span class="sourceLineNo">214</span> implClass = ((CoprocessorClassLoader)cl).loadClass(className, includedClassPrefixes);<a name="line.214"></a>
-<span class="sourceLineNo">215</span> } catch (ClassNotFoundException e) {<a name="line.215"></a>
-<span class="sourceLineNo">216</span> throw new IOException("Cannot load external coprocessor class " + className, e);<a name="line.216"></a>
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-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span><a name="line.219"></a>
-<span class="sourceLineNo">220</span> //load custom code for coprocessor<a name="line.220"></a>
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-<span class="sourceLineNo">222</span> ClassLoader hostClassLoader = currentThread.getContextClassLoader();<a name="line.222"></a>
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-<span class="sourceLineNo">225</span> currentThread.setContextClassLoader(cl);<a name="line.225"></a>
-<span class="sourceLineNo">226</span> E cpInstance = checkAndLoadInstance(implClass, priority, conf);<a name="line.226"></a>
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-<span class="sourceLineNo">237</span> E env = checkAndLoadInstance(implClass, priority, conf);<a name="line.237"></a>
-<span class="sourceLineNo">238</span> coprocEnvironments.add(env);<a name="line.238"></a>
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-<span class="sourceLineNo">241</span> /**<a name="line.241"></a>
-<span class="sourceLineNo">242</span> * @param implClass Implementation class<a name="line.242"></a>
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-<span class="sourceLineNo">254</span> LOG.error("Cannot load coprocessor " + implClass.getSimpleName());<a name="line.254"></a>
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