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From git-site-r...@apache.org
Subject [16/51] [partial] hbase-site git commit: Published site at .
Date Tue, 26 Sep 2017 15:14:13 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8e4e1542/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.html
index ec36d2e..1572f5f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.html
@@ -34,330 +34,328 @@
 <span class="sourceLineNo">026</span>import org.apache.commons.logging.Log;<a name="line.26"></a>
 <span class="sourceLineNo">027</span>import org.apache.commons.logging.LogFactory;<a name="line.27"></a>
 <span class="sourceLineNo">028</span>import org.apache.hadoop.conf.Configuration;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.CoprocessorEnvironment;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.coprocessor.MetricsCoprocessor;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.coprocessor.ObserverContext;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.coprocessor.RegionServerCoprocessorEnvironment;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.coprocessor.RegionServerObserver;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.coprocessor.SingletonCoprocessorService;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.ipc.RpcServer;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.metrics.MetricRegistry;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.replication.ReplicationEndpoint;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.security.User;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.WALEntry;<a name="line.45"></a>
-<span class="sourceLineNo">046</span><a name="line.46"></a>
-<span class="sourceLineNo">047</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)<a name="line.47"></a>
-<span class="sourceLineNo">048</span>@InterfaceStability.Evolving<a name="line.48"></a>
-<span class="sourceLineNo">049</span>public class RegionServerCoprocessorHost extends<a name="line.49"></a>
-<span class="sourceLineNo">050</span>    CoprocessorHost&lt;RegionServerCoprocessorHost.RegionServerEnvironment&gt; {<a name="line.50"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.Coprocessor;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.CoprocessorEnvironment;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.coprocessor.MetricsCoprocessor;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.coprocessor.ObserverContext;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.coprocessor.RegionServerCoprocessorEnvironment;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.coprocessor.RegionServerObserver;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.coprocessor.SingletonCoprocessorService;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.ipc.RpcServer;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.metrics.MetricRegistry;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.replication.ReplicationEndpoint;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.security.User;<a name="line.43"></a>
+<span class="sourceLineNo">044</span><a name="line.44"></a>
+<span class="sourceLineNo">045</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)<a name="line.45"></a>
+<span class="sourceLineNo">046</span>@InterfaceStability.Evolving<a name="line.46"></a>
+<span class="sourceLineNo">047</span>public class RegionServerCoprocessorHost extends<a name="line.47"></a>
+<span class="sourceLineNo">048</span>    CoprocessorHost&lt;RegionServerCoprocessorHost.RegionServerEnvironment&gt; {<a name="line.48"></a>
+<span class="sourceLineNo">049</span><a name="line.49"></a>
+<span class="sourceLineNo">050</span>  private static final Log LOG = LogFactory.getLog(RegionServerCoprocessorHost.class);<a name="line.50"></a>
 <span class="sourceLineNo">051</span><a name="line.51"></a>
-<span class="sourceLineNo">052</span>  private static final Log LOG = LogFactory.getLog(RegionServerCoprocessorHost.class);<a name="line.52"></a>
+<span class="sourceLineNo">052</span>  private RegionServerServices rsServices;<a name="line.52"></a>
 <span class="sourceLineNo">053</span><a name="line.53"></a>
-<span class="sourceLineNo">054</span>  private RegionServerServices rsServices;<a name="line.54"></a>
-<span class="sourceLineNo">055</span><a name="line.55"></a>
-<span class="sourceLineNo">056</span>  public RegionServerCoprocessorHost(RegionServerServices rsServices,<a name="line.56"></a>
-<span class="sourceLineNo">057</span>      Configuration conf) {<a name="line.57"></a>
-<span class="sourceLineNo">058</span>    super(rsServices);<a name="line.58"></a>
-<span class="sourceLineNo">059</span>    this.rsServices = rsServices;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>    this.conf = conf;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>    // Log the state of coprocessor loading here; should appear only once or<a name="line.61"></a>
-<span class="sourceLineNo">062</span>    // twice in the daemon log, depending on HBase version, because there is<a name="line.62"></a>
-<span class="sourceLineNo">063</span>    // only one RegionServerCoprocessorHost instance in the RS process<a name="line.63"></a>
-<span class="sourceLineNo">064</span>    boolean coprocessorsEnabled = conf.getBoolean(COPROCESSORS_ENABLED_CONF_KEY,<a name="line.64"></a>
-<span class="sourceLineNo">065</span>      DEFAULT_COPROCESSORS_ENABLED);<a name="line.65"></a>
-<span class="sourceLineNo">066</span>    boolean tableCoprocessorsEnabled = conf.getBoolean(USER_COPROCESSORS_ENABLED_CONF_KEY,<a name="line.66"></a>
-<span class="sourceLineNo">067</span>      DEFAULT_USER_COPROCESSORS_ENABLED);<a name="line.67"></a>
-<span class="sourceLineNo">068</span>    LOG.info("System coprocessor loading is " + (coprocessorsEnabled ? "enabled" : "disabled"));<a name="line.68"></a>
-<span class="sourceLineNo">069</span>    LOG.info("Table coprocessor loading is " +<a name="line.69"></a>
-<span class="sourceLineNo">070</span>      ((coprocessorsEnabled &amp;&amp; tableCoprocessorsEnabled) ? "enabled" : "disabled"));<a name="line.70"></a>
-<span class="sourceLineNo">071</span>    loadSystemCoprocessors(conf, REGIONSERVER_COPROCESSOR_CONF_KEY);<a name="line.71"></a>
-<span class="sourceLineNo">072</span>  }<a name="line.72"></a>
-<span class="sourceLineNo">073</span><a name="line.73"></a>
-<span class="sourceLineNo">074</span>  @Override<a name="line.74"></a>
-<span class="sourceLineNo">075</span>  public RegionServerEnvironment createEnvironment(Class&lt;?&gt; implClass,<a name="line.75"></a>
-<span class="sourceLineNo">076</span>      Coprocessor instance, int priority, int sequence, Configuration conf) {<a name="line.76"></a>
-<span class="sourceLineNo">077</span>    return new RegionServerEnvironment(implClass, instance, priority,<a name="line.77"></a>
-<span class="sourceLineNo">078</span>      sequence, conf, this.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 preStop(String message, User user) throws IOException {<a name="line.81"></a>
-<span class="sourceLineNo">082</span>    // While stopping the region server all coprocessors method should be executed first then the<a name="line.82"></a>
-<span class="sourceLineNo">083</span>    // coprocessor should be cleaned up.<a name="line.83"></a>
-<span class="sourceLineNo">084</span>    execShutdown(coprocessors.isEmpty() ? null : new CoprocessorOperation(user) {<a name="line.84"></a>
-<span class="sourceLineNo">085</span>      @Override<a name="line.85"></a>
-<span class="sourceLineNo">086</span>      public void call(RegionServerObserver oserver,<a name="line.86"></a>
-<span class="sourceLineNo">087</span>          ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.87"></a>
-<span class="sourceLineNo">088</span>        oserver.preStopRegionServer(ctx);<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 postEnvCall(RegionServerEnvironment env) {<a name="line.91"></a>
-<span class="sourceLineNo">092</span>        // invoke coprocessor stop method<a name="line.92"></a>
-<span class="sourceLineNo">093</span>        shutdown(env);<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>  }<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span>  public void preRollWALWriterRequest() throws IOException {<a name="line.98"></a>
-<span class="sourceLineNo">099</span>    execOperation(coprocessors.isEmpty() ? null : new CoprocessorOperation() {<a name="line.99"></a>
-<span class="sourceLineNo">100</span>      @Override<a name="line.100"></a>
-<span class="sourceLineNo">101</span>      public void call(RegionServerObserver oserver,<a name="line.101"></a>
-<span class="sourceLineNo">102</span>          ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.102"></a>
-<span class="sourceLineNo">103</span>        oserver.preRollWALWriterRequest(ctx);<a name="line.103"></a>
-<span class="sourceLineNo">104</span>      }<a name="line.104"></a>
-<span class="sourceLineNo">105</span>    });<a name="line.105"></a>
-<span class="sourceLineNo">106</span>  }<a name="line.106"></a>
-<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span>  public void postRollWALWriterRequest() throws IOException {<a name="line.108"></a>
-<span class="sourceLineNo">109</span>    execOperation(coprocessors.isEmpty() ? null : new CoprocessorOperation() {<a name="line.109"></a>
-<span class="sourceLineNo">110</span>      @Override<a name="line.110"></a>
-<span class="sourceLineNo">111</span>      public void call(RegionServerObserver oserver,<a name="line.111"></a>
-<span class="sourceLineNo">112</span>          ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.112"></a>
-<span class="sourceLineNo">113</span>        oserver.postRollWALWriterRequest(ctx);<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>  }<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span>  public void preReplicateLogEntries(final List&lt;WALEntry&gt; entries, final CellScanner cells)<a name="line.118"></a>
-<span class="sourceLineNo">119</span>      throws IOException {<a name="line.119"></a>
-<span class="sourceLineNo">120</span>    execOperation(coprocessors.isEmpty() ? null : new CoprocessorOperation() {<a name="line.120"></a>
-<span class="sourceLineNo">121</span>      @Override<a name="line.121"></a>
-<span class="sourceLineNo">122</span>      public void call(RegionServerObserver oserver,<a name="line.122"></a>
-<span class="sourceLineNo">123</span>          ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.123"></a>
-<span class="sourceLineNo">124</span>        oserver.preReplicateLogEntries(ctx, entries, cells);<a name="line.124"></a>
-<span class="sourceLineNo">125</span>      }<a name="line.125"></a>
-<span class="sourceLineNo">126</span>    });<a name="line.126"></a>
-<span class="sourceLineNo">127</span>  }<a name="line.127"></a>
-<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span>  public void postReplicateLogEntries(final List&lt;WALEntry&gt; entries, final CellScanner cells)<a name="line.129"></a>
-<span class="sourceLineNo">130</span>      throws IOException {<a name="line.130"></a>
-<span class="sourceLineNo">131</span>    execOperation(coprocessors.isEmpty() ? null : new CoprocessorOperation() {<a name="line.131"></a>
-<span class="sourceLineNo">132</span>      @Override<a name="line.132"></a>
-<span class="sourceLineNo">133</span>      public void call(RegionServerObserver oserver,<a name="line.133"></a>
-<span class="sourceLineNo">134</span>          ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.134"></a>
-<span class="sourceLineNo">135</span>        oserver.postReplicateLogEntries(ctx, entries, cells);<a name="line.135"></a>
-<span class="sourceLineNo">136</span>      }<a name="line.136"></a>
-<span class="sourceLineNo">137</span>    });<a name="line.137"></a>
-<span class="sourceLineNo">138</span>  }<a name="line.138"></a>
-<span class="sourceLineNo">139</span><a name="line.139"></a>
-<span class="sourceLineNo">140</span>  public ReplicationEndpoint postCreateReplicationEndPoint(final ReplicationEndpoint endpoint)<a name="line.140"></a>
-<span class="sourceLineNo">141</span>      throws IOException {<a name="line.141"></a>
-<span class="sourceLineNo">142</span>    return execOperationWithResult(endpoint, coprocessors.isEmpty() ? null<a name="line.142"></a>
-<span class="sourceLineNo">143</span>        : new CoprocessOperationWithResult&lt;ReplicationEndpoint&gt;() {<a name="line.143"></a>
-<span class="sourceLineNo">144</span>          @Override<a name="line.144"></a>
-<span class="sourceLineNo">145</span>          public void call(RegionServerObserver oserver,<a name="line.145"></a>
-<span class="sourceLineNo">146</span>              ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.146"></a>
-<span class="sourceLineNo">147</span>            setResult(oserver.postCreateReplicationEndPoint(ctx, getResult()));<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>
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-<span class="sourceLineNo">151</span><a name="line.151"></a>
-<span class="sourceLineNo">152</span>  public void preClearCompactionQueues() throws IOException {<a name="line.152"></a>
-<span class="sourceLineNo">153</span>    execOperation(coprocessors.isEmpty() ? null : new CoprocessorOperation() {<a name="line.153"></a>
-<span class="sourceLineNo">154</span>      @Override<a name="line.154"></a>
-<span class="sourceLineNo">155</span>      public void call(RegionServerObserver oserver,<a name="line.155"></a>
-<span class="sourceLineNo">156</span>                       ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.156"></a>
-<span class="sourceLineNo">157</span>        oserver.preClearCompactionQueues(ctx);<a name="line.157"></a>
-<span class="sourceLineNo">158</span>      }<a name="line.158"></a>
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-<span class="sourceLineNo">164</span>      @Override<a name="line.164"></a>
-<span class="sourceLineNo">165</span>      public void call(RegionServerObserver oserver,<a name="line.165"></a>
-<span class="sourceLineNo">166</span>                       ObserverContext&lt;RegionServerCoprocessorEnvironment&gt; ctx) throws IOException {<a name="line.166"></a>
-<span class="sourceLineNo">167</span>        oserver.postClearCompactionQueues(ctx);<a name="line.167"></a>
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-<span class="sourceLineNo">169</span>    });<a name="line.169"></a>
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-<span class="sourceLineNo">215</span>      RegionServerEnvironment env = envs.get(i);<a name="line.215"></a>
-<span class="sourceLineNo">216</span>      if (env.getInstance() instanceof RegionServerObserver) {<a name="line.216"></a>
-<span class="sourceLineNo">217</span>        ctx.prepare(env);<a name="line.217"></a>
-<span class="sourceLineNo">218</span>        Thread currentThread = Thread.currentThread();<a name="line.218"></a>
-<span class="sourceLineNo">219</span>        ClassLoader cl = currentThread.getContextClassLoader();<a name="line.219"></a>
-<span class="sourceLineNo">220</span>        try {<a name="line.220"></a>
-<span class="sourceLineNo">221</span>          currentThread.setContextClassLoader(env.getClassLoader());<a name="line.221"></a>
-<span class="sourceLineNo">222</span>          ctx.call((RegionServerObserver)env.getInstance(), ctx);<a name="line.222"></a>
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+<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>   * RegionServer coprocessor classes can be configured in any order, based on that priority is set<a name="line.237"></a>
+<span class="sourceLineNo">238</span>   * and chained in a sorted order. For preStop(), coprocessor methods are invoked in call() and<a name="line.238"></a>
+<span class="sourceLineNo">239</span>   * environment is shutdown in postEnvCall(). &lt;br&gt;<a name="line.239"></a>
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+<span class="sourceLineNo">241</span>   * may remain shutdown if any exception occurs during next coprocessor execution which prevent<a name="line.241"></a>
+<span class="sourceLineNo">242</span>   * RegionServer stop. (Refer:<a name="line.242"></a>
+<span class="sourceLineNo">243</span>   * &lt;a href="https://issues.apache.org/jira/browse/HBASE-16663"&gt;HBASE-16663&lt;/a&gt;<a name="line.243"></a>
+<span class="sourceLineNo">244</span>   * @param ctx CoprocessorOperation<a name="line.244"></a>
+<span class="sourceLineNo">245</span>   * @return true if bypaas coprocessor execution, false if not.<a name="line.245"></a>
+<span class="sourceLineNo">246</span>   * @throws IOException<a name="line.246"></a>
+<span class="sourceLineNo">247</span>   */<a name="line.247"></a>
+<span class="sourceLineNo">248</span>  private boolean execShutdown(final CoprocessorOperation ctx) throws IOException {<a name="line.248"></a>
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+<span class="sourceLineNo">250</span>    boolean bypass = false;<a name="line.250"></a>
+<span class="sourceLineNo">251</span>    List&lt;RegionServerEnvironment&gt; envs = coprocessors.get();<a name="line.251"></a>
+<span class="sourceLineNo">252</span>    int envsSize = envs.size();<a name="line.252"></a>
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+<span class="sourceLineNo">254</span>    for (int i = 0; i &lt; envsSize; i++) {<a name="line.254"></a>
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+<span class="sourceLineNo">262</span>          ctx.call((RegionServerObserver) env.getInstance(), ctx);<a name="line.262"></a>
+<span class="sourceLineNo">263</span>        } catch (Throwable e) {<a name="line.263"></a>
+<span class="sourceLineNo">264</span>          handleCoprocessorThrowable(env, e);<a name="line.264"></a>
+<span class="sourceLineNo">265</span>        } finally {<a name="line.265"></a>
+<span class="sourceLineNo">266</span>          currentThread.setContextClassLoader(cl);<a name="line.266"></a>
+<span class="sourceLineNo">267</span>        }<a name="line.267"></a>
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+<span class="sourceLineNo">269</span>        if (ctx.shouldComplete()) {<a name="line.269"></a>
+<span class="sourceLineNo">270</span>          break;<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><a name="line.274"></a>
+<span class="sourceLineNo">275</span>    // Iterate the coprocessors and execute CoprocessorOperation's postEnvCall()<a name="line.275"></a>
+<span class="sourceLineNo">276</span>    for (int i = 0; i &lt; envsSize; i++) {<a name="line.276"></a>
+<span class="sourceLineNo">277</span>      RegionServerEnvironment env = envs.get(i);<a name="line.277"></a>
+<span class="sourceLineNo">278</span>      ctx.postEnvCall(env);<a name="line.278"></a>
+<span class="sourceLineNo">279</span>    }<a name="line.279"></a>
+<span class="sourceLineNo">280</span>    return bypass;<a name="line.280"></a>
+<span class="sourceLineNo">281</span>  }<a name="line.281"></a>
+<span class="sourceLineNo">282</span><a name="line.282"></a>
+<span class="sourceLineNo">283</span>  /**<a name="line.283"></a>
+<span class="sourceLineNo">284</span>   * Coprocessor environment extension providing access to region server<a name="line.284"></a>
+<span class="sourceLineNo">285</span>   * related services.<a name="line.285"></a>
+<span class="sourceLineNo">286</span>   */<a name="line.286"></a>
+<span class="sourceLineNo">287</span>  static class RegionServerEnvironment extends CoprocessorHost.Environment<a name="line.287"></a>
+<span class="sourceLineNo">288</span>      implements RegionServerCoprocessorEnvironment {<a name="line.288"></a>
+<span class="sourceLineNo">289</span>    private final RegionServerServices regionServerServices;<a name="line.289"></a>
+<span class="sourceLineNo">290</span>    private final MetricRegistry metricRegistry;<a name="line.290"></a>
+<span class="sourceLineNo">291</span><a name="line.291"></a>
+<span class="sourceLineNo">292</span>    @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="BC_UNCONFIRMED_CAST",<a name="line.292"></a>
+<span class="sourceLineNo">293</span>        justification="Intentional; FB has trouble detecting isAssignableFrom")<a name="line.293"></a>
+<span class="sourceLineNo">294</span>    public RegionServerEnvironment(final Class&lt;?&gt; implClass,<a name="line.294"></a>
+<span class="sourceLineNo">295</span>        final Coprocessor impl, final int priority, final int seq,<a name="line.295"></a>
+<span class="sourceLineNo">296</span>        final Configuration conf, final RegionServerServices services) {<a name="line.296"></a>
+<span class="sourceLineNo">297</span>      super(impl, priority, seq, conf);<a name="line.297"></a>
+<span class="sourceLineNo">298</span>      this.regionServerServices = services;<a name="line.298"></a>
+<span class="sourceLineNo">299</span>      for (Object itf : ClassUtils.getAllInterfaces(implClass)) {<a name="line.299"></a>
+<span class="sourceLineNo">300</span>        Class&lt;?&gt; c = (Class&lt;?&gt;) itf;<a name="line.300"></a>
+<span class="sourceLineNo">301</span>        if (SingletonCoprocessorService.class.isAssignableFrom(c)) {// FindBugs: BC_UNCONFIRMED_CAST<a name="line.301"></a>
+<span class="sourceLineNo">302</span>          this.regionServerServices.registerService(<a name="line.302"></a>
+<span class="sourceLineNo">303</span>            ((SingletonCoprocessorService) impl).getService());<a name="line.303"></a>
+<span class="sourceLineNo">304</span>          break;<a name="line.304"></a>
+<span class="sourceLineNo">305</span>        }<a name="line.305"></a>
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+<span class="sourceLineNo">307</span>      this.metricRegistry =<a name="line.307"></a>
+<span class="sourceLineNo">308</span>          MetricsCoprocessor.createRegistryForRSCoprocessor(implClass.getName());<a name="line.308"></a>
+<span class="sourceLineNo">309</span>    }<a name="line.309"></a>
+<span class="sourceLineNo">310</span><a name="line.310"></a>
+<span class="sourceLineNo">311</span>    @Override<a name="line.311"></a>
+<span class="sourceLineNo">312</span>    public RegionServerServices getRegionServerServices() {<a name="line.312"></a>
+<span class="sourceLineNo">313</span>      return regionServerServices;<a name="line.313"></a>
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+<span class="sourceLineNo">315</span><a name="line.315"></a>
+<span class="sourceLineNo">316</span>    @Override<a name="line.316"></a>
+<span class="sourceLineNo">317</span>    public MetricRegistry getMetricRegistryForRegionServer() {<a name="line.317"></a>
+<span class="sourceLineNo">318</span>      return metricRegistry;<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>    @Override<a name="line.321"></a>
+<span class="sourceLineNo">322</span>    protected void shutdown() {<a name="line.322"></a>
+<span class="sourceLineNo">323</span>      super.shutdown();<a name="line.323"></a>
+<span class="sourceLineNo">324</span>      MetricsCoprocessor.removeRegistry(metricRegistry);<a name="line.324"></a>
+<span class="sourceLineNo">325</span>    }<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>  /**<a name="line.328"></a>
+<span class="sourceLineNo">329</span>   * Environment priority comparator. Coprocessors are chained in sorted<a name="line.329"></a>
+<span class="sourceLineNo">330</span>   * order.<a name="line.330"></a>
+<span class="sourceLineNo">331</span>   */<a name="line.331"></a>
+<span class="sourceLineNo">332</span>  static class EnvironmentPriorityComparator implements<a name="line.332"></a>
+<span class="sourceLineNo">333</span>      Comparator&lt;CoprocessorEnvironment&gt; {<a name="line.333"></a>
+<span class="sourceLineNo">334</span>    @Override<a name="line.334"></a>
+<span class="sourceLineNo">335</span>    public int compare(final CoprocessorEnvironment env1,<a name="line.335"></a>
+<span class="sourceLineNo">336</span>        final CoprocessorEnvironment env2) {<a name="line.336"></a>
+<span class="sourceLineNo">337</span>      if (env1.getPriority() &lt; env2.getPriority()) {<a name="line.337"></a>
+<span class="sourceLineNo">338</span>        return -1;<a name="line.338"></a>
+<span class="sourceLineNo">339</span>      } else if (env1.getPriority() &gt; env2.getPriority()) {<a name="line.339"></a>
+<span class="sourceLineNo">340</span>        return 1;<a name="line.340"></a>
+<span class="sourceLineNo">341</span>      }<a name="line.341"></a>
+<span class="sourceLineNo">342</span>      if (env1.getLoadSequence() &lt; env2.getLoadSequence()) {<a name="line.342"></a>
+<span class="sourceLineNo">343</span>        return -1;<a name="line.343"></a>
+<span class="sourceLineNo">344</span>      } else if (env1.getLoadSequence() &gt; env2.getLoadSequence()) {<a name="line.344"></a>
+<span class="sourceLineNo">345</span>        return 1;<a name="line.345"></a>
+<span class="sourceLineNo">346</span>      }<a name="line.346"></a>
+<span class="sourceLineNo">347</span>      return 0;<a name="line.347"></a>
+<span class="sourceLineNo">348</span>    }<a name="line.348"></a>
+<span class="sourceLineNo">349</span>  }<a name="line.349"></a>
+<span class="sourceLineNo">350</span>}<a name="line.350"></a>
 
 
 

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/8e4e1542/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RowProcessor.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RowProcessor.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RowProcessor.html
index 2ab1f40..8518184 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RowProcessor.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/RowProcessor.html
@@ -40,7 +40,7 @@
 <span class="sourceLineNo">032</span>import com.google.protobuf.Message;<a name="line.32"></a>
 <span class="sourceLineNo">033</span><a name="line.33"></a>
 <span class="sourceLineNo">034</span>/**<a name="line.34"></a>
-<span class="sourceLineNo">035</span> * Defines the procedure to atomically perform multiple scans and mutations<a name="line.35"></a>
+<span class="sourceLineNo">035</span> * Defines the procedures to atomically perform multiple scans and mutations<a name="line.35"></a>
 <span class="sourceLineNo">036</span> * on a HRegion.<a name="line.36"></a>
 <span class="sourceLineNo">037</span> *<a name="line.37"></a>
 <span class="sourceLineNo">038</span> * This is invoked by {@link Region#processRowsWithLocks(RowProcessor)}.<a name="line.38"></a>


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