You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/08/09 14:49:33 UTC

[15/27] hbase-site git commit: Published site at c6ff1de7e2cc08c40785780a4acd65097c8281d9.

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/89ac19a0/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheableDeserializerIdManager.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheableDeserializerIdManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheableDeserializerIdManager.html
index 7d5287a..9486f26 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheableDeserializerIdManager.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/CacheableDeserializerIdManager.html
@@ -26,62 +26,60 @@
 <span class="sourceLineNo">018</span> */<a name="line.18"></a>
 <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.io.hfile;<a name="line.19"></a>
 <span class="sourceLineNo">020</span><a name="line.20"></a>
-<span class="sourceLineNo">021</span>import java.util.HashMap;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.util.Map;<a name="line.22"></a>
+<span class="sourceLineNo">021</span>import java.util.Map;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.22"></a>
 <span class="sourceLineNo">023</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.23"></a>
-<span class="sourceLineNo">024</span><a name="line.24"></a>
-<span class="sourceLineNo">025</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.25"></a>
-<span class="sourceLineNo">026</span><a name="line.26"></a>
-<span class="sourceLineNo">027</span>/**<a name="line.27"></a>
-<span class="sourceLineNo">028</span> * This class is used to manage the identifiers for {@link CacheableDeserializer}.<a name="line.28"></a>
-<span class="sourceLineNo">029</span> * All deserializers are registered with this Manager via the<a name="line.29"></a>
-<span class="sourceLineNo">030</span> * {@link #registerDeserializer(CacheableDeserializer)}}. On registration, we return an<a name="line.30"></a>
-<span class="sourceLineNo">031</span> * int *identifier* for this deserializer. The int identifier is passed to<a name="line.31"></a>
-<span class="sourceLineNo">032</span> * {@link #getDeserializer(int)}} to obtain the registered deserializer instance.<a name="line.32"></a>
-<span class="sourceLineNo">033</span> */<a name="line.33"></a>
-<span class="sourceLineNo">034</span>@InterfaceAudience.Private<a name="line.34"></a>
-<span class="sourceLineNo">035</span>public class CacheableDeserializerIdManager {<a name="line.35"></a>
-<span class="sourceLineNo">036</span>  private static final Map&lt;Integer, CacheableDeserializer&lt;Cacheable&gt;&gt; registeredDeserializers = new HashMap&lt;&gt;();<a name="line.36"></a>
-<span class="sourceLineNo">037</span>  private static final AtomicInteger identifier = new AtomicInteger(0);<a name="line.37"></a>
-<span class="sourceLineNo">038</span><a name="line.38"></a>
-<span class="sourceLineNo">039</span>  /**<a name="line.39"></a>
-<span class="sourceLineNo">040</span>   * Register the given {@link Cacheable} -- usually an hfileblock instance, these implement<a name="line.40"></a>
-<span class="sourceLineNo">041</span>   * the Cacheable Interface -- deserializer and generate an unique identifier id for it and return<a name="line.41"></a>
-<span class="sourceLineNo">042</span>   * this as our result.<a name="line.42"></a>
-<span class="sourceLineNo">043</span>   * @return the identifier of given cacheable deserializer<a name="line.43"></a>
-<span class="sourceLineNo">044</span>   * @see #getDeserializer(int)<a name="line.44"></a>
-<span class="sourceLineNo">045</span>   */<a name="line.45"></a>
-<span class="sourceLineNo">046</span>  public static int registerDeserializer(CacheableDeserializer&lt;Cacheable&gt; cd) {<a name="line.46"></a>
-<span class="sourceLineNo">047</span>    int idx = identifier.incrementAndGet();<a name="line.47"></a>
-<span class="sourceLineNo">048</span>    synchronized (registeredDeserializers) {<a name="line.48"></a>
-<span class="sourceLineNo">049</span>      registeredDeserializers.put(idx, cd);<a name="line.49"></a>
-<span class="sourceLineNo">050</span>    }<a name="line.50"></a>
-<span class="sourceLineNo">051</span>    return idx;<a name="line.51"></a>
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-<span class="sourceLineNo">054</span>  /**<a name="line.54"></a>
-<span class="sourceLineNo">055</span>   * Get the cacheable deserializer registered at the given identifier Id.<a name="line.55"></a>
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-<span class="sourceLineNo">057</span>   */<a name="line.57"></a>
-<span class="sourceLineNo">058</span>  public static CacheableDeserializer&lt;Cacheable&gt; getDeserializer(int id) {<a name="line.58"></a>
-<span class="sourceLineNo">059</span>    return registeredDeserializers.get(id);<a name="line.59"></a>
-<span class="sourceLineNo">060</span>  }<a name="line.60"></a>
-<span class="sourceLineNo">061</span><a name="line.61"></a>
-<span class="sourceLineNo">062</span>  /**<a name="line.62"></a>
-<span class="sourceLineNo">063</span>   * Snapshot a map of the current identifiers to class names for reconstruction on reading out<a name="line.63"></a>
-<span class="sourceLineNo">064</span>   * of a file.<a name="line.64"></a>
-<span class="sourceLineNo">065</span>   */<a name="line.65"></a>
-<span class="sourceLineNo">066</span>  public static Map&lt;Integer,String&gt; save() {<a name="line.66"></a>
-<span class="sourceLineNo">067</span>    Map&lt;Integer, String&gt; snapshot = new HashMap&lt;&gt;();<a name="line.67"></a>
-<span class="sourceLineNo">068</span>    synchronized (registeredDeserializers) {<a name="line.68"></a>
-<span class="sourceLineNo">069</span>      for (Map.Entry&lt;Integer, CacheableDeserializer&lt;Cacheable&gt;&gt; entry :<a name="line.69"></a>
-<span class="sourceLineNo">070</span>          registeredDeserializers.entrySet()) {<a name="line.70"></a>
-<span class="sourceLineNo">071</span>        snapshot.put(entry.getKey(), entry.getValue().getClass().getName());<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>    return snapshot;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>  }<a name="line.75"></a>
-<span class="sourceLineNo">076</span>}<a name="line.76"></a>
+<span class="sourceLineNo">024</span>import java.util.stream.Collectors;<a name="line.24"></a>
+<span class="sourceLineNo">025</span><a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a>
+<span class="sourceLineNo">027</span><a name="line.27"></a>
+<span class="sourceLineNo">028</span>/**<a name="line.28"></a>
+<span class="sourceLineNo">029</span> * This class is used to manage the identifiers for {@link CacheableDeserializer}.<a name="line.29"></a>
+<span class="sourceLineNo">030</span> * All deserializers are registered with this Manager via the<a name="line.30"></a>
+<span class="sourceLineNo">031</span> * {@link #registerDeserializer(CacheableDeserializer)}}. On registration, we return an<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * int *identifier* for this deserializer. The int identifier is passed to<a name="line.32"></a>
+<span class="sourceLineNo">033</span> * {@link #getDeserializer(int)}} to obtain the registered deserializer instance.<a name="line.33"></a>
+<span class="sourceLineNo">034</span> */<a name="line.34"></a>
+<span class="sourceLineNo">035</span>@InterfaceAudience.Private<a name="line.35"></a>
+<span class="sourceLineNo">036</span>public class CacheableDeserializerIdManager {<a name="line.36"></a>
+<span class="sourceLineNo">037</span>  private static final Map&lt;Integer, CacheableDeserializer&lt;Cacheable&gt;&gt; registeredDeserializers =<a name="line.37"></a>
+<span class="sourceLineNo">038</span>      new ConcurrentHashMap&lt;&gt;();<a name="line.38"></a>
+<span class="sourceLineNo">039</span>  private static final AtomicInteger identifier = new AtomicInteger(0);<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span>  /**<a name="line.41"></a>
+<span class="sourceLineNo">042</span>   * Register the given {@link Cacheable} -- usually an hfileblock instance, these implement<a name="line.42"></a>
+<span class="sourceLineNo">043</span>   * the Cacheable Interface -- deserializer and generate an unique identifier id for it and return<a name="line.43"></a>
+<span class="sourceLineNo">044</span>   * this as our result.<a name="line.44"></a>
+<span class="sourceLineNo">045</span>   * @return the identifier of given cacheable deserializer<a name="line.45"></a>
+<span class="sourceLineNo">046</span>   * @see #getDeserializer(int)<a name="line.46"></a>
+<span class="sourceLineNo">047</span>   */<a name="line.47"></a>
+<span class="sourceLineNo">048</span>  public static int registerDeserializer(CacheableDeserializer&lt;Cacheable&gt; cd) {<a name="line.48"></a>
+<span class="sourceLineNo">049</span>    int idx = identifier.incrementAndGet();<a name="line.49"></a>
+<span class="sourceLineNo">050</span>    // No synchronization here because keys will be unique<a name="line.50"></a>
+<span class="sourceLineNo">051</span>    registeredDeserializers.put(idx, cd);<a name="line.51"></a>
+<span class="sourceLineNo">052</span>    return idx;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>  }<a name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
+<span class="sourceLineNo">055</span>  /**<a name="line.55"></a>
+<span class="sourceLineNo">056</span>   * Get the cacheable deserializer registered at the given identifier Id.<a name="line.56"></a>
+<span class="sourceLineNo">057</span>   * @see #registerDeserializer(CacheableDeserializer)<a name="line.57"></a>
+<span class="sourceLineNo">058</span>   */<a name="line.58"></a>
+<span class="sourceLineNo">059</span>  public static CacheableDeserializer&lt;Cacheable&gt; getDeserializer(int id) {<a name="line.59"></a>
+<span class="sourceLineNo">060</span>    return registeredDeserializers.get(id);<a name="line.60"></a>
+<span class="sourceLineNo">061</span>  }<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span>  /**<a name="line.63"></a>
+<span class="sourceLineNo">064</span>   * Snapshot a map of the current identifiers to class names for reconstruction on reading out<a name="line.64"></a>
+<span class="sourceLineNo">065</span>   * of a file.<a name="line.65"></a>
+<span class="sourceLineNo">066</span>   */<a name="line.66"></a>
+<span class="sourceLineNo">067</span>  public static Map&lt;Integer,String&gt; save() {<a name="line.67"></a>
+<span class="sourceLineNo">068</span>    // No synchronization here because weakly consistent view should be good enough<a name="line.68"></a>
+<span class="sourceLineNo">069</span>    // The assumed risk is that we might not see a new serializer that comes in while iterating,<a name="line.69"></a>
+<span class="sourceLineNo">070</span>    // but with a synchronized block, we won't see it anyway<a name="line.70"></a>
+<span class="sourceLineNo">071</span>    return registeredDeserializers.entrySet().stream()<a name="line.71"></a>
+<span class="sourceLineNo">072</span>        .collect(Collectors.toMap(Map.Entry::getKey, e -&gt; e.getValue().getClass().getName()));<a name="line.72"></a>
+<span class="sourceLineNo">073</span>  }<a name="line.73"></a>
+<span class="sourceLineNo">074</span>}<a name="line.74"></a>
 
 
 

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/89ac19a0/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.FifoCallRunner.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.FifoCallRunner.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.FifoCallRunner.html
index 231ba93..f6e4fbf 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.FifoCallRunner.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.FifoCallRunner.html
@@ -28,206 +28,222 @@
 <span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a>
 <span class="sourceLineNo">021</span>import java.util.HashMap;<a name="line.21"></a>
 <span class="sourceLineNo">022</span>import java.util.concurrent.ArrayBlockingQueue;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.concurrent.TimeUnit;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import org.apache.hadoop.conf.Configuration;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.DaemonThreadFactory;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.slf4j.Logger;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.slf4j.LoggerFactory;<a name="line.30"></a>
-<span class="sourceLineNo">031</span><a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hbase.thirdparty.io.netty.util.internal.StringUtil;<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> * A very simple {@code }RpcScheduler} that serves incoming requests in order.<a name="line.35"></a>
-<span class="sourceLineNo">036</span> *<a name="line.36"></a>
-<span class="sourceLineNo">037</span> * This can be used for HMaster, where no prioritization is needed.<a name="line.37"></a>
-<span class="sourceLineNo">038</span> */<a name="line.38"></a>
-<span class="sourceLineNo">039</span>@InterfaceAudience.Private<a name="line.39"></a>
-<span class="sourceLineNo">040</span>public class FifoRpcScheduler extends RpcScheduler {<a name="line.40"></a>
-<span class="sourceLineNo">041</span>  private static final Logger LOG = LoggerFactory.getLogger(FifoRpcScheduler.class);<a name="line.41"></a>
-<span class="sourceLineNo">042</span>  private final int handlerCount;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>  private final int maxQueueLength;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>  private final AtomicInteger queueSize = new AtomicInteger(0);<a name="line.44"></a>
-<span class="sourceLineNo">045</span>  private ThreadPoolExecutor executor;<a name="line.45"></a>
-<span class="sourceLineNo">046</span><a name="line.46"></a>
-<span class="sourceLineNo">047</span>  public FifoRpcScheduler(Configuration conf, int handlerCount) {<a name="line.47"></a>
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-<span class="sourceLineNo">049</span>    this.maxQueueLength = conf.getInt(RpcScheduler.IPC_SERVER_MAX_CALLQUEUE_LENGTH,<a name="line.49"></a>
-<span class="sourceLineNo">050</span>        handlerCount * RpcServer.DEFAULT_MAX_CALLQUEUE_LENGTH_PER_HANDLER);<a name="line.50"></a>
-<span class="sourceLineNo">051</span>    LOG.info("Using " + this.getClass().getSimpleName() + " as user call queue; handlerCount=" +<a name="line.51"></a>
-<span class="sourceLineNo">052</span>        handlerCount + "; maxQueueLength=" + maxQueueLength);<a name="line.52"></a>
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-<span class="sourceLineNo">055</span>  @Override<a name="line.55"></a>
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-<span class="sourceLineNo">057</span>    // no-op<a name="line.57"></a>
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-<span class="sourceLineNo">060</span>  @Override<a name="line.60"></a>
-<span class="sourceLineNo">061</span>  public void start() {<a name="line.61"></a>
-<span class="sourceLineNo">062</span>    this.executor = new ThreadPoolExecutor(<a name="line.62"></a>
-<span class="sourceLineNo">063</span>        handlerCount,<a name="line.63"></a>
+<span class="sourceLineNo">023</span>import java.util.concurrent.BlockingQueue;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.concurrent.TimeUnit;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.conf.Configuration;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.DaemonThreadFactory;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.slf4j.Logger;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.slf4j.LoggerFactory;<a name="line.31"></a>
+<span class="sourceLineNo">032</span><a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hbase.thirdparty.io.netty.util.internal.StringUtil;<a name="line.33"></a>
+<span class="sourceLineNo">034</span><a name="line.34"></a>
+<span class="sourceLineNo">035</span>/**<a name="line.35"></a>
+<span class="sourceLineNo">036</span> * A very simple {@code }RpcScheduler} that serves incoming requests in order.<a name="line.36"></a>
+<span class="sourceLineNo">037</span> *<a name="line.37"></a>
+<span class="sourceLineNo">038</span> * This can be used for HMaster, where no prioritization is needed.<a name="line.38"></a>
+<span class="sourceLineNo">039</span> */<a name="line.39"></a>
+<span class="sourceLineNo">040</span>@InterfaceAudience.Private<a name="line.40"></a>
+<span class="sourceLineNo">041</span>public class FifoRpcScheduler extends RpcScheduler {<a name="line.41"></a>
+<span class="sourceLineNo">042</span>  private static final Logger LOG = LoggerFactory.getLogger(FifoRpcScheduler.class);<a name="line.42"></a>
+<span class="sourceLineNo">043</span>  protected final int handlerCount;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>  protected final int maxQueueLength;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>  protected final AtomicInteger queueSize = new AtomicInteger(0);<a name="line.45"></a>
+<span class="sourceLineNo">046</span>  protected ThreadPoolExecutor executor;<a name="line.46"></a>
+<span class="sourceLineNo">047</span><a name="line.47"></a>
+<span class="sourceLineNo">048</span>  public FifoRpcScheduler(Configuration conf, int handlerCount) {<a name="line.48"></a>
+<span class="sourceLineNo">049</span>    this.handlerCount = handlerCount;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>    this.maxQueueLength = conf.getInt(RpcScheduler.IPC_SERVER_MAX_CALLQUEUE_LENGTH,<a name="line.50"></a>
+<span class="sourceLineNo">051</span>        handlerCount * RpcServer.DEFAULT_MAX_CALLQUEUE_LENGTH_PER_HANDLER);<a name="line.51"></a>
+<span class="sourceLineNo">052</span>  }<a name="line.52"></a>
+<span class="sourceLineNo">053</span><a name="line.53"></a>
+<span class="sourceLineNo">054</span>  @Override<a name="line.54"></a>
+<span class="sourceLineNo">055</span>  public void init(Context context) {<a name="line.55"></a>
+<span class="sourceLineNo">056</span>    // no-op<a name="line.56"></a>
+<span class="sourceLineNo">057</span>  }<a name="line.57"></a>
+<span class="sourceLineNo">058</span><a name="line.58"></a>
+<span class="sourceLineNo">059</span>  @Override<a name="line.59"></a>
+<span class="sourceLineNo">060</span>  public void start() {<a name="line.60"></a>
+<span class="sourceLineNo">061</span>    LOG.info("Using {} as user call queue; handlerCount={}; maxQueueLength={}",<a name="line.61"></a>
+<span class="sourceLineNo">062</span>      this.getClass().getSimpleName(), handlerCount, maxQueueLength);<a name="line.62"></a>
+<span class="sourceLineNo">063</span>    this.executor = new ThreadPoolExecutor(<a name="line.63"></a>
 <span class="sourceLineNo">064</span>        handlerCount,<a name="line.64"></a>
-<span class="sourceLineNo">065</span>        60,<a name="line.65"></a>
-<span class="sourceLineNo">066</span>        TimeUnit.SECONDS,<a name="line.66"></a>
-<span class="sourceLineNo">067</span>        new ArrayBlockingQueue&lt;&gt;(maxQueueLength),<a name="line.67"></a>
-<span class="sourceLineNo">068</span>        new DaemonThreadFactory("FifoRpcScheduler.handler"),<a name="line.68"></a>
-<span class="sourceLineNo">069</span>        new ThreadPoolExecutor.CallerRunsPolicy());<a name="line.69"></a>
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-<span class="sourceLineNo">073</span>  public void stop() {<a name="line.73"></a>
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-<span class="sourceLineNo">076</span><a name="line.76"></a>
-<span class="sourceLineNo">077</span>  private static class FifoCallRunner implements Runnable {<a name="line.77"></a>
-<span class="sourceLineNo">078</span>    private final CallRunner callRunner;<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span>    FifoCallRunner(CallRunner cr) {<a name="line.80"></a>
-<span class="sourceLineNo">081</span>      this.callRunner = cr;<a name="line.81"></a>
-<span class="sourceLineNo">082</span>    }<a name="line.82"></a>
-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span>    CallRunner getCallRunner() {<a name="line.84"></a>
-<span class="sourceLineNo">085</span>      return callRunner;<a name="line.85"></a>
-<span class="sourceLineNo">086</span>    }<a name="line.86"></a>
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/89ac19a0/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
index 231ba93..f6e4fbf 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
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