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Posted to commits@hbase.apache.org by mi...@apache.org on 2016/01/28 18:25:10 UTC
[22/51] [partial] hbase-site git commit: Published site at
138b754671d51d3f494adc250ab0cb9e085c858a.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/39cf5e9b/devapidocs/src-html/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.html b/devapidocs/src-html/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.html
new file mode 100644
index 0000000..5d603c1
--- /dev/null
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/exceptions/ClientExceptionsUtil.html
@@ -0,0 +1,167 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
+<span class="sourceLineNo">002</span> *<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * regarding copyright ownership. The ASF licenses this file<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * with the License. You may obtain a copy of the License at<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a>
+<span class="sourceLineNo">012</span> *<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a>
+<span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a>
+<span class="sourceLineNo">018</span> */<a name="line.18"></a>
+<span class="sourceLineNo">019</span><a name="line.19"></a>
+<span class="sourceLineNo">020</span>package org.apache.hadoop.hbase.exceptions;<a name="line.20"></a>
+<span class="sourceLineNo">021</span><a name="line.21"></a>
+<span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.CallQueueTooBigException;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.MultiActionResultTooLarge;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.RegionTooBusyException;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.RetryImmediatelyException;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.quotas.ThrottlingException;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>@InterfaceAudience.Private<a name="line.31"></a>
+<span class="sourceLineNo">032</span>@InterfaceStability.Evolving<a name="line.32"></a>
+<span class="sourceLineNo">033</span>public final class ClientExceptionsUtil {<a name="line.33"></a>
+<span class="sourceLineNo">034</span><a name="line.34"></a>
+<span class="sourceLineNo">035</span> private ClientExceptionsUtil() {}<a name="line.35"></a>
+<span class="sourceLineNo">036</span><a name="line.36"></a>
+<span class="sourceLineNo">037</span> public static boolean isMetaClearingException(Throwable cur) {<a name="line.37"></a>
+<span class="sourceLineNo">038</span> cur = findException(cur);<a name="line.38"></a>
+<span class="sourceLineNo">039</span><a name="line.39"></a>
+<span class="sourceLineNo">040</span> if (cur == null) {<a name="line.40"></a>
+<span class="sourceLineNo">041</span> return true;<a name="line.41"></a>
+<span class="sourceLineNo">042</span> }<a name="line.42"></a>
+<span class="sourceLineNo">043</span> return !isSpecialException(cur) || (cur instanceof RegionMovedException);<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> public static boolean isSpecialException(Throwable cur) {<a name="line.46"></a>
+<span class="sourceLineNo">047</span> return (cur instanceof RegionMovedException || cur instanceof RegionOpeningException<a name="line.47"></a>
+<span class="sourceLineNo">048</span> || cur instanceof RegionTooBusyException || cur instanceof ThrottlingException<a name="line.48"></a>
+<span class="sourceLineNo">049</span> || cur instanceof MultiActionResultTooLarge || cur instanceof RetryImmediatelyException<a name="line.49"></a>
+<span class="sourceLineNo">050</span> || cur instanceof CallQueueTooBigException);<a name="line.50"></a>
+<span class="sourceLineNo">051</span> }<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> /**<a name="line.54"></a>
+<span class="sourceLineNo">055</span> * Look for an exception we know in the remote exception:<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * - hadoop.ipc wrapped exceptions<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * - nested exceptions<a name="line.57"></a>
+<span class="sourceLineNo">058</span> *<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * Looks for: RegionMovedException / RegionOpeningException / RegionTooBusyException /<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * ThrottlingException<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * @return null if we didn't find the exception, the exception otherwise.<a name="line.61"></a>
+<span class="sourceLineNo">062</span> */<a name="line.62"></a>
+<span class="sourceLineNo">063</span> public static Throwable findException(Object exception) {<a name="line.63"></a>
+<span class="sourceLineNo">064</span> if (exception == null || !(exception instanceof Throwable)) {<a name="line.64"></a>
+<span class="sourceLineNo">065</span> return null;<a name="line.65"></a>
+<span class="sourceLineNo">066</span> }<a name="line.66"></a>
+<span class="sourceLineNo">067</span> Throwable cur = (Throwable) exception;<a name="line.67"></a>
+<span class="sourceLineNo">068</span> while (cur != null) {<a name="line.68"></a>
+<span class="sourceLineNo">069</span> if (isSpecialException(cur)) {<a name="line.69"></a>
+<span class="sourceLineNo">070</span> return cur;<a name="line.70"></a>
+<span class="sourceLineNo">071</span> }<a name="line.71"></a>
+<span class="sourceLineNo">072</span> if (cur instanceof RemoteException) {<a name="line.72"></a>
+<span class="sourceLineNo">073</span> RemoteException re = (RemoteException) cur;<a name="line.73"></a>
+<span class="sourceLineNo">074</span> cur = re.unwrapRemoteException(<a name="line.74"></a>
+<span class="sourceLineNo">075</span> RegionOpeningException.class, RegionMovedException.class,<a name="line.75"></a>
+<span class="sourceLineNo">076</span> RegionTooBusyException.class);<a name="line.76"></a>
+<span class="sourceLineNo">077</span> if (cur == null) {<a name="line.77"></a>
+<span class="sourceLineNo">078</span> cur = re.unwrapRemoteException();<a name="line.78"></a>
+<span class="sourceLineNo">079</span> }<a name="line.79"></a>
+<span class="sourceLineNo">080</span> // unwrapRemoteException can return the exception given as a parameter when it cannot<a name="line.80"></a>
+<span class="sourceLineNo">081</span> // unwrap it. In this case, there is no need to look further<a name="line.81"></a>
+<span class="sourceLineNo">082</span> // noinspection ObjectEquality<a name="line.82"></a>
+<span class="sourceLineNo">083</span> if (cur == re) {<a name="line.83"></a>
+<span class="sourceLineNo">084</span> return cur;<a name="line.84"></a>
+<span class="sourceLineNo">085</span> }<a name="line.85"></a>
+<span class="sourceLineNo">086</span> } else if (cur.getCause() != null) {<a name="line.86"></a>
+<span class="sourceLineNo">087</span> cur = cur.getCause();<a name="line.87"></a>
+<span class="sourceLineNo">088</span> } else {<a name="line.88"></a>
+<span class="sourceLineNo">089</span> return cur;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<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> return null;<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>
+
+
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+</pre>
+</div>
+</body>
+</html>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/39cf5e9b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.html
index d4dd41e..9cc5117 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BalancedQueueRpcExecutor.html
@@ -80,9 +80,9 @@
<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 void dispatch(final CallRunner callTask) throws InterruptedException {<a name="line.75"></a>
+<span class="sourceLineNo">075</span> public boolean dispatch(final CallRunner callTask) throws InterruptedException {<a name="line.75"></a>
<span class="sourceLineNo">076</span> int queueIndex = balancer.getNextQueue();<a name="line.76"></a>
-<span class="sourceLineNo">077</span> queues.get(queueIndex).put(callTask);<a name="line.77"></a>
+<span class="sourceLineNo">077</span> return queues.get(queueIndex).offer(callTask);<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> @Override<a name="line.80"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/39cf5e9b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
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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 190e423..b7a5179 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FifoRpcScheduler.html
@@ -32,77 +32,87 @@
<span class="sourceLineNo">024</span>import java.util.concurrent.ArrayBlockingQueue;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.concurrent.TimeUnit;<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> * A very simple {@code }RpcScheduler} that serves incoming requests in order.<a name="line.29"></a>
-<span class="sourceLineNo">030</span> *<a name="line.30"></a>
-<span class="sourceLineNo">031</span> * This can be used for HMaster, where no prioritization is needed.<a name="line.31"></a>
-<span class="sourceLineNo">032</span> */<a name="line.32"></a>
-<span class="sourceLineNo">033</span>public class FifoRpcScheduler extends RpcScheduler {<a name="line.33"></a>
-<span class="sourceLineNo">034</span><a name="line.34"></a>
-<span class="sourceLineNo">035</span> private final int handlerCount;<a name="line.35"></a>
-<span class="sourceLineNo">036</span> private final int maxQueueLength;<a name="line.36"></a>
-<span class="sourceLineNo">037</span> private ThreadPoolExecutor executor;<a name="line.37"></a>
-<span class="sourceLineNo">038</span><a name="line.38"></a>
-<span class="sourceLineNo">039</span> public FifoRpcScheduler(Configuration conf, int handlerCount) {<a name="line.39"></a>
-<span class="sourceLineNo">040</span> this.handlerCount = handlerCount;<a name="line.40"></a>
-<span class="sourceLineNo">041</span> this.maxQueueLength = conf.getInt("hbase.ipc.server.max.callqueue.length",<a name="line.41"></a>
-<span class="sourceLineNo">042</span> handlerCount * RpcServer.DEFAULT_MAX_CALLQUEUE_LENGTH_PER_HANDLER);<a name="line.42"></a>
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-<span class="sourceLineNo">044</span><a name="line.44"></a>
-<span class="sourceLineNo">045</span> @Override<a name="line.45"></a>
-<span class="sourceLineNo">046</span> public void init(Context context) {<a name="line.46"></a>
-<span class="sourceLineNo">047</span> // no-op<a name="line.47"></a>
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-<span class="sourceLineNo">051</span> public void start() {<a name="line.51"></a>
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-<span class="sourceLineNo">053</span> handlerCount,<a name="line.53"></a>
-<span class="sourceLineNo">054</span> handlerCount,<a name="line.54"></a>
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-<span class="sourceLineNo">056</span> TimeUnit.SECONDS,<a name="line.56"></a>
-<span class="sourceLineNo">057</span> new ArrayBlockingQueue<Runnable>(maxQueueLength),<a name="line.57"></a>
-<span class="sourceLineNo">058</span> new DaemonThreadFactory("FifoRpcScheduler.handler"),<a name="line.58"></a>
-<span class="sourceLineNo">059</span> new ThreadPoolExecutor.CallerRunsPolicy());<a name="line.59"></a>
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-<span class="sourceLineNo">068</span> public void dispatch(final CallRunner task) throws IOException, InterruptedException {<a name="line.68"></a>
-<span class="sourceLineNo">069</span> executor.submit(new Runnable() {<a name="line.69"></a>
-<span class="sourceLineNo">070</span> @Override<a name="line.70"></a>
-<span class="sourceLineNo">071</span> public void run() {<a name="line.71"></a>
-<span class="sourceLineNo">072</span> task.setStatus(RpcServer.getStatus());<a name="line.72"></a>
-<span class="sourceLineNo">073</span> task.run();<a name="line.73"></a>
-<span class="sourceLineNo">074</span> }<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>
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-<span class="sourceLineNo">078</span> @Override<a name="line.78"></a>
-<span class="sourceLineNo">079</span> public int getGeneralQueueLength() {<a name="line.79"></a>
-<span class="sourceLineNo">080</span> return executor.getQueue().size();<a name="line.80"></a>
-<span class="sourceLineNo">081</span> }<a name="line.81"></a>
-<span class="sourceLineNo">082</span><a name="line.82"></a>
-<span class="sourceLineNo">083</span> @Override<a name="line.83"></a>
-<span class="sourceLineNo">084</span> public int getPriorityQueueLength() {<a name="line.84"></a>
-<span class="sourceLineNo">085</span> return 0;<a name="line.85"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.27"></a>
+<span class="sourceLineNo">028</span><a name="line.28"></a>
+<span class="sourceLineNo">029</span>/**<a name="line.29"></a>
+<span class="sourceLineNo">030</span> * A very simple {@code }RpcScheduler} that serves incoming requests in order.<a name="line.30"></a>
+<span class="sourceLineNo">031</span> *<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * This can be used for HMaster, where no prioritization is needed.<a name="line.32"></a>
+<span class="sourceLineNo">033</span> */<a name="line.33"></a>
+<span class="sourceLineNo">034</span>public class FifoRpcScheduler extends RpcScheduler {<a name="line.34"></a>
+<span class="sourceLineNo">035</span><a name="line.35"></a>
+<span class="sourceLineNo">036</span> private final int handlerCount;<a name="line.36"></a>
+<span class="sourceLineNo">037</span> private final int maxQueueLength;<a name="line.37"></a>
+<span class="sourceLineNo">038</span> private final AtomicInteger queueSize = new AtomicInteger(0);<a name="line.38"></a>
+<span class="sourceLineNo">039</span> private ThreadPoolExecutor executor;<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span> public FifoRpcScheduler(Configuration conf, int handlerCount) {<a name="line.41"></a>
+<span class="sourceLineNo">042</span> this.handlerCount = handlerCount;<a name="line.42"></a>
+<span class="sourceLineNo">043</span> this.maxQueueLength = conf.getInt("hbase.ipc.server.max.callqueue.length",<a name="line.43"></a>
+<span class="sourceLineNo">044</span> handlerCount * RpcServer.DEFAULT_MAX_CALLQUEUE_LENGTH_PER_HANDLER);<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> @Override<a name="line.47"></a>
+<span class="sourceLineNo">048</span> public void init(Context context) {<a name="line.48"></a>
+<span class="sourceLineNo">049</span> // no-op<a name="line.49"></a>
+<span class="sourceLineNo">050</span> }<a name="line.50"></a>
+<span class="sourceLineNo">051</span><a name="line.51"></a>
+<span class="sourceLineNo">052</span> @Override<a name="line.52"></a>
+<span class="sourceLineNo">053</span> public void start() {<a name="line.53"></a>
+<span class="sourceLineNo">054</span> this.executor = new ThreadPoolExecutor(<a name="line.54"></a>
+<span class="sourceLineNo">055</span> handlerCount,<a name="line.55"></a>
+<span class="sourceLineNo">056</span> handlerCount,<a name="line.56"></a>
+<span class="sourceLineNo">057</span> 60,<a name="line.57"></a>
+<span class="sourceLineNo">058</span> TimeUnit.SECONDS,<a name="line.58"></a>
+<span class="sourceLineNo">059</span> new ArrayBlockingQueue<Runnable>(maxQueueLength),<a name="line.59"></a>
+<span class="sourceLineNo">060</span> new DaemonThreadFactory("FifoRpcScheduler.handler"),<a name="line.60"></a>
+<span class="sourceLineNo">061</span> new ThreadPoolExecutor.CallerRunsPolicy());<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> @Override<a name="line.64"></a>
+<span class="sourceLineNo">065</span> public void stop() {<a name="line.65"></a>
+<span class="sourceLineNo">066</span> this.executor.shutdown();<a name="line.66"></a>
+<span class="sourceLineNo">067</span> }<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span> @Override<a name="line.69"></a>
+<span class="sourceLineNo">070</span> public boolean dispatch(final CallRunner task) throws IOException, InterruptedException {<a name="line.70"></a>
+<span class="sourceLineNo">071</span> // Executors provide no offer, so make our own.<a name="line.71"></a>
+<span class="sourceLineNo">072</span> int queued = queueSize.getAndIncrement();<a name="line.72"></a>
+<span class="sourceLineNo">073</span> if (maxQueueLength > 0 && queued >= maxQueueLength) {<a name="line.73"></a>
+<span class="sourceLineNo">074</span> queueSize.decrementAndGet();<a name="line.74"></a>
+<span class="sourceLineNo">075</span> return false;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> }<a name="line.76"></a>
+<span class="sourceLineNo">077</span> executor.submit(new Runnable() {<a name="line.77"></a>
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+<span class="sourceLineNo">080</span> task.setStatus(RpcServer.getStatus());<a name="line.80"></a>
+<span class="sourceLineNo">081</span> task.run();<a name="line.81"></a>
+<span class="sourceLineNo">082</span> queueSize.decrementAndGet();<a name="line.82"></a>
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