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Posted to commits@giraph.apache.org by ek...@apache.org on 2012/08/16 03:32:58 UTC
svn commit: r1373684 [28/35] - in /giraph/site: ./ apidocs/
apidocs/org/apache/giraph/ apidocs/org/apache/giraph/benchmark/
apidocs/org/apache/giraph/benchmark/class-use/
apidocs/org/apache/giraph/bsp/ apidocs/org/apache/giraph/bsp/class-use/
apidocs/o...
Modified: giraph/site/xref/org/apache/giraph/comm/NettyClient.html
URL: http://svn.apache.org/viewvc/giraph/site/xref/org/apache/giraph/comm/NettyClient.html?rev=1373684&r1=1373683&r2=1373684&view=diff
==============================================================================
--- giraph/site/xref/org/apache/giraph/comm/NettyClient.html (original)
+++ giraph/site/xref/org/apache/giraph/comm/NettyClient.html Thu Aug 16 01:32:41 2012
@@ -28,297 +28,400 @@
<a name="18" href="#18">18</a>
<a name="19" href="#19">19</a> <strong class="jxr_keyword">package</strong> org.apache.giraph.comm;
<a name="20" href="#20">20</a>
-<a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.Maps;
-<a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.net.InetSocketAddress;
-<a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList;
-<a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.Collection;
+<a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.Lists;
+<a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.MapMaker;
+<a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> com.google.common.collect.Maps;
+<a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.net.InetSocketAddress;
<a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.List;
<a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.Map;
-<a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.Executors;
-<a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicInteger;
-<a name="29" href="#29">29</a>
-<a name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.GiraphJob;
-<a name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
-<a name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.Writable;
-<a name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.WritableComparable;
-<a name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.Mapper;
-<a name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
-<a name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.bootstrap.ClientBootstrap;
-<a name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channel;
-<a name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelConfig;
-<a name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFuture;
-<a name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFutureListener;
-<a name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelPipeline;
-<a name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelPipelineFactory;
-<a name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channels;
-<a name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
-<a name="45" href="#45">45</a>
-<a name="46" href="#46">46</a> <em class="jxr_javadoccomment">/**</em>
-<a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * Netty client for sending requests.</em>
-<a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> *</em>
-<a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * @param <I> Vertex id</em>
-<a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * @param <V> Vertex data</em>
-<a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * @param <E> Edge data</em>
-<a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * @param <M> Message data</em>
-<a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> */</em>
-<a name="54" href="#54">54</a> @SuppressWarnings(<span class="jxr_string">"rawtypes"</span>)
-<a name="55" href="#55">55</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> NettyClient<I <strong class="jxr_keyword">extends</strong> WritableComparable,
-<a name="56" href="#56">56</a> V <strong class="jxr_keyword">extends</strong> Writable, E <strong class="jxr_keyword">extends</strong> Writable,
-<a name="57" href="#57">57</a> M <strong class="jxr_keyword">extends</strong> Writable> {
-<a name="58" href="#58">58</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Msecs to wait between waiting for all requests to finish */</em>
-<a name="59" href="#59">59</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> WAITING_REQUEST_MSECS = 15000;
-<a name="60" href="#60">60</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Do we have a limit on number of open requests we can have */</em>
-<a name="61" href="#61">61</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String LIMIT_NUMBER_OF_OPEN_REQUESTS =
-<a name="62" href="#62">62</a> <span class="jxr_string">"giraph.waitForRequestsConfirmation"</span>;
-<a name="63" href="#63">63</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Default choice about having a limit on number of open requests */</em>
-<a name="64" href="#64">64</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> LIMIT_NUMBER_OF_OPEN_REQUESTS_DEFAULT = false;
-<a name="65" href="#65">65</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Maximum number of requests without confirmation we should have */</em>
-<a name="66" href="#66">66</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String MAX_NUMBER_OF_OPEN_REQUESTS =
-<a name="67" href="#67">67</a> <span class="jxr_string">"giraph.maxNumberOfOpenRequests"</span>;
-<a name="68" href="#68">68</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Default maximum number of requests without confirmation */</em>
-<a name="69" href="#69">69</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAX_NUMBER_OF_OPEN_REQUESTS_DEFAULT = 10000;
-<a name="70" href="#70">70</a>
-<a name="71" href="#71">71</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Class logger */</em>
-<a name="72" href="#72">72</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = Logger.getLogger(NettyClient.<strong class="jxr_keyword">class</strong>);
-<a name="73" href="#73">73</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Context used to report progress */</em>
-<a name="74" href="#74">74</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Mapper<?, ?, ?, ?>.Context context;
-<a name="75" href="#75">75</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Client bootstrap */</em>
-<a name="76" href="#76">76</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ClientBootstrap bootstrap;
-<a name="77" href="#77">77</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Atomic count of outstanding requests (synchronize on self) */</em>
-<a name="78" href="#78">78</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicInteger waitingRequestCount = <strong class="jxr_keyword">new</strong> AtomicInteger(0);
-<a name="79" href="#79">79</a> <em class="jxr_javadoccomment">/**</em>
-<a name="80" href="#80">80</a> <em class="jxr_javadoccomment"> * Map of the peer connections, mapping from remote socket address to client</em>
-<a name="81" href="#81">81</a> <em class="jxr_javadoccomment"> * meta data</em>
-<a name="82" href="#82">82</a> <em class="jxr_javadoccomment"> */</em>
-<a name="83" href="#83">83</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<InetSocketAddress, ChannelRotater> addressChannelMap =
-<a name="84" href="#84">84</a> Maps.newHashMap();
-<a name="85" href="#85">85</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Number of channels per server */</em>
-<a name="86" href="#86">86</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> channelsPerServer;
-<a name="87" href="#87">87</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Byte counter for this client */</em>
-<a name="88" href="#88">88</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/giraph/comm/ByteCounter.html">ByteCounter</a> byteCounter = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/ByteCounter.html">ByteCounter</a>();
-<a name="89" href="#89">89</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Send buffer size */</em>
-<a name="90" href="#90">90</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> sendBufferSize;
-<a name="91" href="#91">91</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Receive buffer size */</em>
-<a name="92" href="#92">92</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> receiveBufferSize;
-<a name="93" href="#93">93</a>
-<a name="94" href="#94">94</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Do we have a limit on number of open requests */</em>
-<a name="95" href="#95">95</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> limitNumberOfOpenRequests;
-<a name="96" href="#96">96</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Maximum number of requests without confirmation we can have */</em>
-<a name="97" href="#97">97</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxNumberOfOpenRequests;
-<a name="98" href="#98">98</a>
-<a name="99" href="#99">99</a> <em class="jxr_javadoccomment">/**</em>
-<a name="100" href="#100">100</a> <em class="jxr_javadoccomment"> * Only constructor</em>
-<a name="101" href="#101">101</a> <em class="jxr_javadoccomment"> *</em>
-<a name="102" href="#102">102</a> <em class="jxr_javadoccomment"> * @param context Context for progress</em>
-<a name="103" href="#103">103</a> <em class="jxr_javadoccomment"> */</em>
-<a name="104" href="#104">104</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/giraph/comm/NettyClient.html">NettyClient</a>(Mapper<?, ?, ?, ?>.Context context) {
-<a name="105" href="#105">105</a> <strong class="jxr_keyword">this</strong>.context = context;
-<a name="106" href="#106">106</a> Configuration conf = context.getConfiguration();
-<a name="107" href="#107">107</a> <strong class="jxr_keyword">this</strong>.channelsPerServer = conf.getInt(
-<a name="108" href="#108">108</a> GiraphJob.CHANNELS_PER_SERVER,
-<a name="109" href="#109">109</a> GiraphJob.DEFAULT_CHANNELS_PER_SERVER);
-<a name="110" href="#110">110</a> sendBufferSize = conf.getInt(GiraphJob.CLIENT_SEND_BUFFER_SIZE,
-<a name="111" href="#111">111</a> GiraphJob.DEFAULT_CLIENT_SEND_BUFFER_SIZE);
-<a name="112" href="#112">112</a> receiveBufferSize = conf.getInt(GiraphJob.CLIENT_RECEIVE_BUFFER_SIZE,
-<a name="113" href="#113">113</a> GiraphJob.DEFAULT_CLIENT_RECEIVE_BUFFER_SIZE);
-<a name="114" href="#114">114</a>
-<a name="115" href="#115">115</a> limitNumberOfOpenRequests = conf.getBoolean(
-<a name="116" href="#116">116</a> LIMIT_NUMBER_OF_OPEN_REQUESTS,
-<a name="117" href="#117">117</a> LIMIT_NUMBER_OF_OPEN_REQUESTS_DEFAULT);
-<a name="118" href="#118">118</a> <strong class="jxr_keyword">if</strong> (limitNumberOfOpenRequests) {
-<a name="119" href="#119">119</a> maxNumberOfOpenRequests = conf.getInt(
-<a name="120" href="#120">120</a> MAX_NUMBER_OF_OPEN_REQUESTS,
-<a name="121" href="#121">121</a> MAX_NUMBER_OF_OPEN_REQUESTS_DEFAULT);
-<a name="122" href="#122">122</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="123" href="#123">123</a> LOG.info(<span class="jxr_string">"NettyClient: Limit number of open requests to "</span> +
-<a name="124" href="#124">124</a> maxNumberOfOpenRequests);
-<a name="125" href="#125">125</a> }
-<a name="126" href="#126">126</a> } <strong class="jxr_keyword">else</strong> {
-<a name="127" href="#127">127</a> maxNumberOfOpenRequests = -1;
-<a name="128" href="#128">128</a> }
-<a name="129" href="#129">129</a>
-<a name="130" href="#130">130</a> <em class="jxr_comment">// Configure the client.</em>
-<a name="131" href="#131">131</a> bootstrap = <strong class="jxr_keyword">new</strong> ClientBootstrap(
-<a name="132" href="#132">132</a> <strong class="jxr_keyword">new</strong> NioClientSocketChannelFactory(
-<a name="133" href="#133">133</a> Executors.newCachedThreadPool(),
-<a name="134" href="#134">134</a> Executors.newCachedThreadPool(),
-<a name="135" href="#135">135</a> conf.getInt(GiraphJob.MSG_NUM_FLUSH_THREADS,
-<a name="136" href="#136">136</a> NettyServer.DEFAULT_MAXIMUM_THREAD_POOL_SIZE)));
-<a name="137" href="#137">137</a>
-<a name="138" href="#138">138</a> <em class="jxr_comment">// Set up the pipeline factory.</em>
-<a name="139" href="#139">139</a> bootstrap.setPipelineFactory(<strong class="jxr_keyword">new</strong> ChannelPipelineFactory() {
-<a name="140" href="#140">140</a> @Override
-<a name="141" href="#141">141</a> <strong class="jxr_keyword">public</strong> ChannelPipeline getPipeline() <strong class="jxr_keyword">throws</strong> Exception {
-<a name="142" href="#142">142</a> <strong class="jxr_keyword">return</strong> Channels.pipeline(
-<a name="143" href="#143">143</a> byteCounter,
-<a name="144" href="#144">144</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/RequestEncoder.html">RequestEncoder</a>(),
-<a name="145" href="#145">145</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/ResponseClientHandler.html">ResponseClientHandler</a>(waitingRequestCount));
-<a name="146" href="#146">146</a> }
-<a name="147" href="#147">147</a> });
-<a name="148" href="#148">148</a> }
-<a name="149" href="#149">149</a>
-<a name="150" href="#150">150</a> <em class="jxr_javadoccomment">/**</em>
-<a name="151" href="#151">151</a> <em class="jxr_javadoccomment"> * Connect to a collection of addresses</em>
-<a name="152" href="#152">152</a> <em class="jxr_javadoccomment"> *</em>
-<a name="153" href="#153">153</a> <em class="jxr_javadoccomment"> * @param addresses Addresses to connect to (if haven't already connected)</em>
-<a name="154" href="#154">154</a> <em class="jxr_javadoccomment"> */</em>
-<a name="155" href="#155">155</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> connectAllAddresses(Collection<InetSocketAddress> addresses) {
-<a name="156" href="#156">156</a> List<ChannelFuture> waitingConnectionList =
-<a name="157" href="#157">157</a> <strong class="jxr_keyword">new</strong> ArrayList<ChannelFuture>();
-<a name="158" href="#158">158</a> <strong class="jxr_keyword">for</strong> (InetSocketAddress address : addresses) {
-<a name="159" href="#159">159</a> <strong class="jxr_keyword">if</strong> (address == <strong class="jxr_keyword">null</strong>) {
-<a name="160" href="#160">160</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"connectAllAddresses: Null address "</span> +
-<a name="161" href="#161">161</a> <span class="jxr_string">"in addresses "</span> + addresses);
-<a name="162" href="#162">162</a> }
-<a name="163" href="#163">163</a>
-<a name="164" href="#164">164</a> <strong class="jxr_keyword">if</strong> (addressChannelMap.containsKey(address)) {
-<a name="165" href="#165">165</a> <strong class="jxr_keyword">continue</strong>;
-<a name="166" href="#166">166</a> }
-<a name="167" href="#167">167</a>
-<a name="168" href="#168">168</a> <em class="jxr_comment">// Start connecting to the remote server up to n time</em>
-<a name="169" href="#169">169</a> <a href="../../../../org/apache/giraph/comm/ChannelRotater.html">ChannelRotater</a> channelRotater = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/ChannelRotater.html">ChannelRotater</a>();
-<a name="170" href="#170">170</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < channelsPerServer; ++i) {
-<a name="171" href="#171">171</a> ChannelFuture connectionFuture = bootstrap.connect(address);
-<a name="172" href="#172">172</a> connectionFuture.getChannel().getConfig().setOption(<span class="jxr_string">"tcpNoDelay"</span>, <strong class="jxr_keyword">true</strong>);
-<a name="173" href="#173">173</a> connectionFuture.getChannel().getConfig().setOption(<span class="jxr_string">"keepAlive"</span>, <strong class="jxr_keyword">true</strong>);
-<a name="174" href="#174">174</a> connectionFuture.getChannel().getConfig().setOption(
-<a name="175" href="#175">175</a> <span class="jxr_string">"sendBufferSize"</span>, sendBufferSize);
-<a name="176" href="#176">176</a> connectionFuture.getChannel().getConfig().setOption(
-<a name="177" href="#177">177</a> <span class="jxr_string">"receiveBufferSize"</span>, receiveBufferSize);
-<a name="178" href="#178">178</a> channelRotater.addChannel(connectionFuture.getChannel());
-<a name="179" href="#179">179</a> waitingConnectionList.add(connectionFuture);
-<a name="180" href="#180">180</a> }
-<a name="181" href="#181">181</a> addressChannelMap.put(address, channelRotater);
-<a name="182" href="#182">182</a> }
-<a name="183" href="#183">183</a>
-<a name="184" href="#184">184</a> <em class="jxr_comment">// Wait for all the connections to succeed</em>
-<a name="185" href="#185">185</a> <strong class="jxr_keyword">for</strong> (ChannelFuture waitingConnection : waitingConnectionList) {
-<a name="186" href="#186">186</a> ChannelFuture future =
-<a name="187" href="#187">187</a> waitingConnection.awaitUninterruptibly();
-<a name="188" href="#188">188</a> <strong class="jxr_keyword">if</strong> (!future.isSuccess()) {
-<a name="189" href="#189">189</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"connectAllAddresses: Future failed "</span> +
-<a name="190" href="#190">190</a> <span class="jxr_string">"with "</span> + future.getCause());
-<a name="191" href="#191">191</a> }
-<a name="192" href="#192">192</a> Channel channel = future.getChannel();
-<a name="193" href="#193">193</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="194" href="#194">194</a> LOG.info(<span class="jxr_string">"connectAllAddresses: Connected to "</span> +
-<a name="195" href="#195">195</a> channel.getRemoteAddress());
-<a name="196" href="#196">196</a> }
-<a name="197" href="#197">197</a>
-<a name="198" href="#198">198</a> <strong class="jxr_keyword">if</strong> (channel.getRemoteAddress() == <strong class="jxr_keyword">null</strong>) {
-<a name="199" href="#199">199</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"connectAllAddresses: Null remote "</span> +
-<a name="200" href="#200">200</a> <span class="jxr_string">"address!"</span>);
-<a name="201" href="#201">201</a> }
-<a name="202" href="#202">202</a> }
-<a name="203" href="#203">203</a> }
-<a name="204" href="#204">204</a>
-<a name="205" href="#205">205</a> <em class="jxr_javadoccomment">/**</em>
-<a name="206" href="#206">206</a> <em class="jxr_javadoccomment"> * Stop the client.</em>
-<a name="207" href="#207">207</a> <em class="jxr_javadoccomment"> */</em>
-<a name="208" href="#208">208</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> stop() {
-<a name="209" href="#209">209</a> <em class="jxr_comment">// close connections asyncronously, in a Netty-approved</em>
-<a name="210" href="#210">210</a> <em class="jxr_comment">// way, without cleaning up thread pools until all channels</em>
-<a name="211" href="#211">211</a> <em class="jxr_comment">// in addressChannelMap are closed (success or failure)</em>
-<a name="212" href="#212">212</a> <strong class="jxr_keyword">int</strong> channelCount = 0;
-<a name="213" href="#213">213</a> <strong class="jxr_keyword">for</strong> (ChannelRotater channelRotater : addressChannelMap.values()) {
-<a name="214" href="#214">214</a> channelCount += channelRotater.getChannels().size();
-<a name="215" href="#215">215</a> }
-<a name="216" href="#216">216</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> done = channelCount;
-<a name="217" href="#217">217</a> <strong class="jxr_keyword">final</strong> AtomicInteger count = <strong class="jxr_keyword">new</strong> AtomicInteger(0);
-<a name="218" href="#218">218</a> <strong class="jxr_keyword">for</strong> (ChannelRotater channelRotater : addressChannelMap.values()) {
-<a name="219" href="#219">219</a> <strong class="jxr_keyword">for</strong> (Channel channel : channelRotater.getChannels()) {
-<a name="220" href="#220">220</a> ChannelFuture result = channel.close();
-<a name="221" href="#221">221</a> result.addListener(<strong class="jxr_keyword">new</strong> ChannelFutureListener() {
-<a name="222" href="#222">222</a> @Override
-<a name="223" href="#223">223</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> operationComplete(ChannelFuture cf) {
-<a name="224" href="#224">224</a> <strong class="jxr_keyword">if</strong> (count.incrementAndGet() == done) {
-<a name="225" href="#225">225</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="226" href="#226">226</a> LOG.info(<span class="jxr_string">"stop: reached wait threshold, "</span> +
-<a name="227" href="#227">227</a> done + <span class="jxr_string">" connections closed, releasing "</span> +
-<a name="228" href="#228">228</a> <span class="jxr_string">"NettyClient.bootstrap resources now."</span>);
-<a name="229" href="#229">229</a> }
-<a name="230" href="#230">230</a> bootstrap.releaseExternalResources();
-<a name="231" href="#231">231</a> }
-<a name="232" href="#232">232</a> }
-<a name="233" href="#233">233</a> });
-<a name="234" href="#234">234</a> }
-<a name="235" href="#235">235</a> }
-<a name="236" href="#236">236</a> }
-<a name="237" href="#237">237</a>
-<a name="238" href="#238">238</a> <em class="jxr_javadoccomment">/**</em>
-<a name="239" href="#239">239</a> <em class="jxr_javadoccomment"> * Send a request to a remote server (should be already connected)</em>
-<a name="240" href="#240">240</a> <em class="jxr_javadoccomment"> *</em>
-<a name="241" href="#241">241</a> <em class="jxr_javadoccomment"> * @param remoteServer Server to send the request to</em>
-<a name="242" href="#242">242</a> <em class="jxr_javadoccomment"> * @param request Request to send</em>
-<a name="243" href="#243">243</a> <em class="jxr_javadoccomment"> */</em>
-<a name="244" href="#244">244</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sendWritableRequest(InetSocketAddress remoteServer,
-<a name="245" href="#245">245</a> WritableRequest<I, V, E, M> request) {
-<a name="246" href="#246">246</a> <strong class="jxr_keyword">if</strong> (waitingRequestCount.get() == 0) {
-<a name="247" href="#247">247</a> byteCounter.resetAll();
-<a name="248" href="#248">248</a> }
-<a name="249" href="#249">249</a> waitingRequestCount.incrementAndGet();
-<a name="250" href="#250">250</a> Channel channel = addressChannelMap.get(remoteServer).nextChannel();
-<a name="251" href="#251">251</a> <strong class="jxr_keyword">if</strong> (channel == <strong class="jxr_keyword">null</strong>) {
-<a name="252" href="#252">252</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="253" href="#253">253</a> <span class="jxr_string">"sendWritableRequest: No channel exists for "</span> + remoteServer);
-<a name="254" href="#254">254</a> }
-<a name="255" href="#255">255</a> channel.write(request);
-<a name="256" href="#256">256</a> <strong class="jxr_keyword">if</strong> (limitNumberOfOpenRequests &&
-<a name="257" href="#257">257</a> waitingRequestCount.get() > maxNumberOfOpenRequests) {
-<a name="258" href="#258">258</a> waitSomeRequests(maxNumberOfOpenRequests);
-<a name="259" href="#259">259</a> }
-<a name="260" href="#260">260</a> }
-<a name="261" href="#261">261</a>
-<a name="262" href="#262">262</a> <em class="jxr_javadoccomment">/**</em>
-<a name="263" href="#263">263</a> <em class="jxr_javadoccomment"> * Ensure all the request sent so far are complete.</em>
-<a name="264" href="#264">264</a> <em class="jxr_javadoccomment"> *</em>
-<a name="265" href="#265">265</a> <em class="jxr_javadoccomment"> * @throws InterruptedException</em>
-<a name="266" href="#266">266</a> <em class="jxr_javadoccomment"> */</em>
-<a name="267" href="#267">267</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> waitAllRequests() {
-<a name="268" href="#268">268</a> waitSomeRequests(0);
-<a name="269" href="#269">269</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="270" href="#270">270</a> LOG.info(<span class="jxr_string">"waitAllRequests: Finished all requests. "</span> +
-<a name="271" href="#271">271</a> byteCounter.getMetrics());
-<a name="272" href="#272">272</a> }
-<a name="273" href="#273">273</a> }
-<a name="274" href="#274">274</a>
-<a name="275" href="#275">275</a> <em class="jxr_javadoccomment">/**</em>
-<a name="276" href="#276">276</a> <em class="jxr_javadoccomment"> * Ensure that at most maxOpenRequests are not complete</em>
-<a name="277" href="#277">277</a> <em class="jxr_javadoccomment"> *</em>
-<a name="278" href="#278">278</a> <em class="jxr_javadoccomment"> * @param maxOpenRequests Maximum number of requests which can be not</em>
-<a name="279" href="#279">279</a> <em class="jxr_javadoccomment"> * complete</em>
-<a name="280" href="#280">280</a> <em class="jxr_javadoccomment"> */</em>
-<a name="281" href="#281">281</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> waitSomeRequests(<strong class="jxr_keyword">int</strong> maxOpenRequests) {
-<a name="282" href="#282">282</a> <strong class="jxr_keyword">synchronized</strong> (waitingRequestCount) {
-<a name="283" href="#283">283</a> <strong class="jxr_keyword">while</strong> (waitingRequestCount.get() > maxOpenRequests) {
-<a name="284" href="#284">284</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="285" href="#285">285</a> LOG.info(<span class="jxr_string">"waitSomeRequests: Waiting interval of "</span> +
-<a name="286" href="#286">286</a> WAITING_REQUEST_MSECS + <span class="jxr_string">" msecs, "</span> + waitingRequestCount +
-<a name="287" href="#287">287</a> <span class="jxr_string">" open requests, waiting for it to be <= "</span> + maxOpenRequests +
-<a name="288" href="#288">288</a> <span class="jxr_string">", "</span> + byteCounter.getMetrics());
-<a name="289" href="#289">289</a> }
-<a name="290" href="#290">290</a> <strong class="jxr_keyword">try</strong> {
-<a name="291" href="#291">291</a> waitingRequestCount.wait(WAITING_REQUEST_MSECS);
-<a name="292" href="#292">292</a> } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a name="293" href="#293">293</a> LOG.error(<span class="jxr_string">"waitFutures: Got unexpected InterruptedException"</span>, e);
-<a name="294" href="#294">294</a> }
-<a name="295" href="#295">295</a> <em class="jxr_comment">// Make sure that waiting doesn't kill the job</em>
-<a name="296" href="#296">296</a> context.progress();
-<a name="297" href="#297">297</a> }
-<a name="298" href="#298">298</a> }
-<a name="299" href="#299">299</a> }
-<a name="300" href="#300">300</a>
-<a name="301" href="#301">301</a> <em class="jxr_javadoccomment">/**</em>
-<a name="302" href="#302">302</a> <em class="jxr_javadoccomment"> * Returning configuration of the first channel.</em>
-<a name="303" href="#303">303</a> <em class="jxr_javadoccomment"> * @throws ArrayIndexOutOfBoundsException if no</em>
-<a name="304" href="#304">304</a> <em class="jxr_javadoccomment"> * channels exist in the client's address => channel map.</em>
-<a name="305" href="#305">305</a> <em class="jxr_javadoccomment"> * @return ChannelConfig for the first channel (if any).</em>
-<a name="306" href="#306">306</a> <em class="jxr_javadoccomment"> */</em>
-<a name="307" href="#307">307</a> <strong class="jxr_keyword">public</strong> ChannelConfig getChannelConfig() {
-<a name="308" href="#308">308</a> <strong class="jxr_keyword">return</strong> ((Channel) addressChannelMap.values().toArray()[0]).getConfig();
-<a name="309" href="#309">309</a> }
-<a name="310" href="#310">310</a>
-<a name="311" href="#311">311</a> }
+<a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.Set;
+<a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentMap;
+<a name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.Executors;
+<a name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicInteger;
+<a name="31" href="#31">31</a>
+<a name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.GiraphJob;
+<a name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.giraph.utils.TimedLogger;
+<a name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
+<a name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.Writable;
+<a name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.WritableComparable;
+<a name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.Mapper;
+<a name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
+<a name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.bootstrap.ClientBootstrap;
+<a name="40" href="#40">40</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channel;
+<a name="41" href="#41">41</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelConfig;
+<a name="42" href="#42">42</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFuture;
+<a name="43" href="#43">43</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFutureListener;
+<a name="44" href="#44">44</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelPipeline;
+<a name="45" href="#45">45</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelPipelineFactory;
+<a name="46" href="#46">46</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channels;
+<a name="47" href="#47">47</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
+<a name="48" href="#48">48</a> <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.frame.FixedLengthFrameDecoder;
+<a name="49" href="#49">49</a>
+<a name="50" href="#50">50</a> <em class="jxr_javadoccomment">/**</em>
+<a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * Netty client for sending requests.</em>
+<a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> *</em>
+<a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * @param <I> Vertex id</em>
+<a name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * @param <V> Vertex data</em>
+<a name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * @param <E> Edge data</em>
+<a name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * @param <M> Message data</em>
+<a name="57" href="#57">57</a> <em class="jxr_javadoccomment"> */</em>
+<a name="58" href="#58">58</a> @SuppressWarnings(<span class="jxr_string">"rawtypes"</span>)
+<a name="59" href="#59">59</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> NettyClient<I <strong class="jxr_keyword">extends</strong> WritableComparable,
+<a name="60" href="#60">60</a> V <strong class="jxr_keyword">extends</strong> Writable, E <strong class="jxr_keyword">extends</strong> Writable,
+<a name="61" href="#61">61</a> M <strong class="jxr_keyword">extends</strong> Writable> {
+<a name="62" href="#62">62</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Msecs to wait between waiting for all requests to finish */</em>
+<a name="63" href="#63">63</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> WAITING_REQUEST_MSECS = 15000;
+<a name="64" href="#64">64</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Do we have a limit on number of open requests we can have */</em>
+<a name="65" href="#65">65</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String LIMIT_NUMBER_OF_OPEN_REQUESTS =
+<a name="66" href="#66">66</a> <span class="jxr_string">"giraph.waitForRequestsConfirmation"</span>;
+<a name="67" href="#67">67</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Default choice about having a limit on number of open requests */</em>
+<a name="68" href="#68">68</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> LIMIT_NUMBER_OF_OPEN_REQUESTS_DEFAULT = false;
+<a name="69" href="#69">69</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Maximum number of requests without confirmation we should have */</em>
+<a name="70" href="#70">70</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String MAX_NUMBER_OF_OPEN_REQUESTS =
+<a name="71" href="#71">71</a> <span class="jxr_string">"giraph.maxNumberOfOpenRequests"</span>;
+<a name="72" href="#72">72</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Default maximum number of requests without confirmation */</em>
+<a name="73" href="#73">73</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAX_NUMBER_OF_OPEN_REQUESTS_DEFAULT = 10000;
+<a name="74" href="#74">74</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Maximum number of requests to list (for debugging) */</em>
+<a name="75" href="#75">75</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAX_REQUESTS_TO_LIST = 10;
+<a name="76" href="#76">76</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> 30 seconds to connect by default */</em>
+<a name="77" href="#77">77</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MAX_CONNECTION_MILLISECONDS_DEFAULT = 30 * 1000;
+<a name="78" href="#78">78</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Class logger */</em>
+<a name="79" href="#79">79</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = Logger.getLogger(NettyClient.<strong class="jxr_keyword">class</strong>);
+<a name="80" href="#80">80</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Context used to report progress */</em>
+<a name="81" href="#81">81</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Mapper<?, ?, ?, ?>.Context context;
+<a name="82" href="#82">82</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Client bootstrap */</em>
+<a name="83" href="#83">83</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ClientBootstrap bootstrap;
+<a name="84" href="#84">84</a> <em class="jxr_javadoccomment">/**</em>
+<a name="85" href="#85">85</a> <em class="jxr_javadoccomment"> * Map of the peer connections, mapping from remote socket address to client</em>
+<a name="86" href="#86">86</a> <em class="jxr_javadoccomment"> * meta data</em>
+<a name="87" href="#87">87</a> <em class="jxr_javadoccomment"> */</em>
+<a name="88" href="#88">88</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map<InetSocketAddress, ChannelRotater> addressChannelMap =
+<a name="89" href="#89">89</a> Maps.newHashMap();
+<a name="90" href="#90">90</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Atomic request id, used in outstandingRequestMap */</em>
+<a name="91" href="#91">91</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> AtomicInteger requestId = <strong class="jxr_keyword">new</strong> AtomicInteger(0);
+<a name="92" href="#92">92</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Outstanding request map (tracks all requests). */</em>
+<a name="93" href="#93">93</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ConcurrentMap<Long, RequestInfo> outstandingRequestMap;
+<a name="94" href="#94">94</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Number of channels per server */</em>
+<a name="95" href="#95">95</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> channelsPerServer;
+<a name="96" href="#96">96</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Byte counter for this client */</em>
+<a name="97" href="#97">97</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/giraph/comm/ByteCounter.html">ByteCounter</a> byteCounter = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/ByteCounter.html">ByteCounter</a>();
+<a name="98" href="#98">98</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Send buffer size */</em>
+<a name="99" href="#99">99</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> sendBufferSize;
+<a name="100" href="#100">100</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Receive buffer size */</em>
+<a name="101" href="#101">101</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> receiveBufferSize;
+<a name="102" href="#102">102</a>
+<a name="103" href="#103">103</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Do we have a limit on number of open requests */</em>
+<a name="104" href="#104">104</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> limitNumberOfOpenRequests;
+<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Maximum number of requests without confirmation we can have */</em>
+<a name="106" href="#106">106</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxNumberOfOpenRequests;
+<a name="107" href="#107">107</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Maximum number of connnection failures */</em>
+<a name="108" href="#108">108</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxConnectionFailures;
+<a name="109" href="#109">109</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Timed logger for printing request debugging */</em>
+<a name="110" href="#110">110</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/giraph/utils/TimedLogger.html">TimedLogger</a> requestLogger = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/utils/TimedLogger.html">TimedLogger</a>(15 * 1000, LOG);
+<a name="111" href="#111">111</a>
+<a name="112" href="#112">112</a> <em class="jxr_javadoccomment">/**</em>
+<a name="113" href="#113">113</a> <em class="jxr_javadoccomment"> * Only constructor</em>
+<a name="114" href="#114">114</a> <em class="jxr_javadoccomment"> *</em>
+<a name="115" href="#115">115</a> <em class="jxr_javadoccomment"> * @param context Context for progress</em>
+<a name="116" href="#116">116</a> <em class="jxr_javadoccomment"> */</em>
+<a name="117" href="#117">117</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/giraph/comm/NettyClient.html">NettyClient</a>(Mapper<?, ?, ?, ?>.Context context) {
+<a name="118" href="#118">118</a> <strong class="jxr_keyword">this</strong>.context = context;
+<a name="119" href="#119">119</a> Configuration conf = context.getConfiguration();
+<a name="120" href="#120">120</a> <strong class="jxr_keyword">this</strong>.channelsPerServer = conf.getInt(
+<a name="121" href="#121">121</a> GiraphJob.CHANNELS_PER_SERVER,
+<a name="122" href="#122">122</a> GiraphJob.DEFAULT_CHANNELS_PER_SERVER);
+<a name="123" href="#123">123</a> sendBufferSize = conf.getInt(GiraphJob.CLIENT_SEND_BUFFER_SIZE,
+<a name="124" href="#124">124</a> GiraphJob.DEFAULT_CLIENT_SEND_BUFFER_SIZE);
+<a name="125" href="#125">125</a> receiveBufferSize = conf.getInt(GiraphJob.CLIENT_RECEIVE_BUFFER_SIZE,
+<a name="126" href="#126">126</a> GiraphJob.DEFAULT_CLIENT_RECEIVE_BUFFER_SIZE);
+<a name="127" href="#127">127</a>
+<a name="128" href="#128">128</a> limitNumberOfOpenRequests = conf.getBoolean(
+<a name="129" href="#129">129</a> LIMIT_NUMBER_OF_OPEN_REQUESTS,
+<a name="130" href="#130">130</a> LIMIT_NUMBER_OF_OPEN_REQUESTS_DEFAULT);
+<a name="131" href="#131">131</a> <strong class="jxr_keyword">if</strong> (limitNumberOfOpenRequests) {
+<a name="132" href="#132">132</a> maxNumberOfOpenRequests = conf.getInt(
+<a name="133" href="#133">133</a> MAX_NUMBER_OF_OPEN_REQUESTS,
+<a name="134" href="#134">134</a> MAX_NUMBER_OF_OPEN_REQUESTS_DEFAULT);
+<a name="135" href="#135">135</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
+<a name="136" href="#136">136</a> LOG.info(<span class="jxr_string">"NettyClient: Limit number of open requests to "</span> +
+<a name="137" href="#137">137</a> maxNumberOfOpenRequests);
+<a name="138" href="#138">138</a> }
+<a name="139" href="#139">139</a> } <strong class="jxr_keyword">else</strong> {
+<a name="140" href="#140">140</a> maxNumberOfOpenRequests = -1;
+<a name="141" href="#141">141</a> }
+<a name="142" href="#142">142</a>
+<a name="143" href="#143">143</a> maxConnectionFailures = conf.getInt(
+<a name="144" href="#144">144</a> GiraphJob.NETTY_MAX_CONNECTION_FAILURES,
+<a name="145" href="#145">145</a> GiraphJob.NETTY_MAX_CONNECTION_FAILURES_DEFAULT);
+<a name="146" href="#146">146</a>
+<a name="147" href="#147">147</a> <strong class="jxr_keyword">int</strong> maxThreads = conf.getInt(GiraphJob.MSG_NUM_FLUSH_THREADS,
+<a name="148" href="#148">148</a> NettyServer.MAXIMUM_THREAD_POOL_SIZE_DEFAULT);
+<a name="149" href="#149">149</a> outstandingRequestMap =
+<a name="150" href="#150">150</a> <strong class="jxr_keyword">new</strong> MapMaker().concurrencyLevel(maxThreads).makeMap();
+<a name="151" href="#151">151</a>
+<a name="152" href="#152">152</a> <em class="jxr_comment">// Configure the client.</em>
+<a name="153" href="#153">153</a> bootstrap = <strong class="jxr_keyword">new</strong> ClientBootstrap(
+<a name="154" href="#154">154</a> <strong class="jxr_keyword">new</strong> NioClientSocketChannelFactory(
+<a name="155" href="#155">155</a> Executors.newCachedThreadPool(),
+<a name="156" href="#156">156</a> Executors.newCachedThreadPool(),
+<a name="157" href="#157">157</a> maxThreads));
+<a name="158" href="#158">158</a> bootstrap.setOption(<span class="jxr_string">"connectTimeoutMillis"</span>,
+<a name="159" href="#159">159</a> MAX_CONNECTION_MILLISECONDS_DEFAULT);
+<a name="160" href="#160">160</a> bootstrap.setOption(<span class="jxr_string">"tcpNoDelay"</span>, <strong class="jxr_keyword">true</strong>);
+<a name="161" href="#161">161</a> bootstrap.setOption(<span class="jxr_string">"keepAlive"</span>, <strong class="jxr_keyword">true</strong>);
+<a name="162" href="#162">162</a> bootstrap.setOption(<span class="jxr_string">"sendBufferSize"</span>, sendBufferSize);
+<a name="163" href="#163">163</a> bootstrap.setOption(<span class="jxr_string">"receiveBufferSize"</span>, receiveBufferSize);
+<a name="164" href="#164">164</a>
+<a name="165" href="#165">165</a> <em class="jxr_comment">// Set up the pipeline factory.</em>
+<a name="166" href="#166">166</a> bootstrap.setPipelineFactory(<strong class="jxr_keyword">new</strong> ChannelPipelineFactory() {
+<a name="167" href="#167">167</a> @Override
+<a name="168" href="#168">168</a> <strong class="jxr_keyword">public</strong> ChannelPipeline getPipeline() <strong class="jxr_keyword">throws</strong> Exception {
+<a name="169" href="#169">169</a> <strong class="jxr_keyword">return</strong> Channels.pipeline(
+<a name="170" href="#170">170</a> byteCounter,
+<a name="171" href="#171">171</a> <strong class="jxr_keyword">new</strong> FixedLengthFrameDecoder(9),
+<a name="172" href="#172">172</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/RequestEncoder.html">RequestEncoder</a>(),
+<a name="173" href="#173">173</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/ResponseClientHandler.html">ResponseClientHandler</a>(outstandingRequestMap));
+<a name="174" href="#174">174</a> }
+<a name="175" href="#175">175</a> });
+<a name="176" href="#176">176</a> }
+<a name="177" href="#177">177</a>
+<a name="178" href="#178">178</a> <em class="jxr_javadoccomment">/**</em>
+<a name="179" href="#179">179</a> <em class="jxr_javadoccomment"> * Pair object for connectAllAddresses().</em>
+<a name="180" href="#180">180</a> <em class="jxr_javadoccomment"> */</em>
+<a name="181" href="#181">181</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/giraph/comm/NettyClient.html">ChannelFutureAddress</a> {
+<a name="182" href="#182">182</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Future object */</em>
+<a name="183" href="#183">183</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ChannelFuture future;
+<a name="184" href="#184">184</a> <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Address of the future */</em>
+<a name="185" href="#185">185</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> InetSocketAddress address;
+<a name="186" href="#186">186</a>
+<a name="187" href="#187">187</a> <em class="jxr_javadoccomment">/**</em>
+<a name="188" href="#188">188</a> <em class="jxr_javadoccomment"> * Constructor.</em>
+<a name="189" href="#189">189</a> <em class="jxr_javadoccomment"> *</em>
+<a name="190" href="#190">190</a> <em class="jxr_javadoccomment"> * @param future Immutable future</em>
+<a name="191" href="#191">191</a> <em class="jxr_javadoccomment"> * @param address Immutable address</em>
+<a name="192" href="#192">192</a> <em class="jxr_javadoccomment"> */</em>
+<a name="193" href="#193">193</a> <a href="../../../../org/apache/giraph/comm/NettyClient.html">ChannelFutureAddress</a>(ChannelFuture future, InetSocketAddress address) {
+<a name="194" href="#194">194</a> <strong class="jxr_keyword">this</strong>.future = future;
+<a name="195" href="#195">195</a> <strong class="jxr_keyword">this</strong>.address = address;
+<a name="196" href="#196">196</a> }
+<a name="197" href="#197">197</a> }
+<a name="198" href="#198">198</a>
+<a name="199" href="#199">199</a> <em class="jxr_javadoccomment">/**</em>
+<a name="200" href="#200">200</a> <em class="jxr_javadoccomment"> * Connect to a collection of addresses</em>
+<a name="201" href="#201">201</a> <em class="jxr_javadoccomment"> *</em>
+<a name="202" href="#202">202</a> <em class="jxr_javadoccomment"> * @param addresses Addresses to connect to (if haven't already connected)</em>
+<a name="203" href="#203">203</a> <em class="jxr_javadoccomment"> */</em>
+<a name="204" href="#204">204</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> connectAllAddresses(Set<InetSocketAddress> addresses) {
+<a name="205" href="#205">205</a> List<ChannelFutureAddress> waitingConnectionList =
+<a name="206" href="#206">206</a> Lists.newArrayListWithCapacity(addresses.size() * channelsPerServer);
+<a name="207" href="#207">207</a> <strong class="jxr_keyword">for</strong> (InetSocketAddress address : addresses) {
+<a name="208" href="#208">208</a> context.progress();
+<a name="209" href="#209">209</a> <strong class="jxr_keyword">if</strong> (address == <strong class="jxr_keyword">null</strong> || address.getHostName() == <strong class="jxr_keyword">null</strong> ||
+<a name="210" href="#210">210</a> address.getHostName().isEmpty()) {
+<a name="211" href="#211">211</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"connectAllAddresses: Null address "</span> +
+<a name="212" href="#212">212</a> <span class="jxr_string">"in addresses "</span> + addresses);
+<a name="213" href="#213">213</a> }
+<a name="214" href="#214">214</a> <strong class="jxr_keyword">if</strong> (address.isUnresolved()) {
+<a name="215" href="#215">215</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"connectAllAddresses: Unresolved "</span> +
+<a name="216" href="#216">216</a> <span class="jxr_string">"address "</span> + address);
+<a name="217" href="#217">217</a> }
+<a name="218" href="#218">218</a>
+<a name="219" href="#219">219</a> <strong class="jxr_keyword">if</strong> (addressChannelMap.containsKey(address)) {
+<a name="220" href="#220">220</a> <strong class="jxr_keyword">continue</strong>;
+<a name="221" href="#221">221</a> }
+<a name="222" href="#222">222</a>
+<a name="223" href="#223">223</a> <em class="jxr_comment">// Start connecting to the remote server up to n time</em>
+<a name="224" href="#224">224</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < channelsPerServer; ++i) {
+<a name="225" href="#225">225</a> ChannelFuture connectionFuture = bootstrap.connect(address);
+<a name="226" href="#226">226</a>
+<a name="227" href="#227">227</a> waitingConnectionList.add(
+<a name="228" href="#228">228</a> <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/NettyClient.html">ChannelFutureAddress</a>(connectionFuture, address));
+<a name="229" href="#229">229</a> }
+<a name="230" href="#230">230</a> }
+<a name="231" href="#231">231</a>
+<a name="232" href="#232">232</a> <em class="jxr_comment">// Wait for all the connections to succeed up to n tries</em>
+<a name="233" href="#233">233</a> <strong class="jxr_keyword">int</strong> failures = 0;
+<a name="234" href="#234">234</a> <strong class="jxr_keyword">int</strong> connected = 0;
+<a name="235" href="#235">235</a> <strong class="jxr_keyword">while</strong> (failures < maxConnectionFailures) {
+<a name="236" href="#236">236</a> List<ChannelFutureAddress> nextCheckFutures = Lists.newArrayList();
+<a name="237" href="#237">237</a> <strong class="jxr_keyword">for</strong> (ChannelFutureAddress waitingConnection : waitingConnectionList) {
+<a name="238" href="#238">238</a> context.progress();
+<a name="239" href="#239">239</a> ChannelFuture future =
+<a name="240" href="#240">240</a> waitingConnection.future.awaitUninterruptibly();
+<a name="241" href="#241">241</a> <strong class="jxr_keyword">if</strong> (!future.isSuccess()) {
+<a name="242" href="#242">242</a> LOG.warn(<span class="jxr_string">"connectAllAddresses: Future failed "</span> +
+<a name="243" href="#243">243</a> <span class="jxr_string">"to connect with "</span> + waitingConnection.address + <span class="jxr_string">" with "</span> +
+<a name="244" href="#244">244</a> failures + <span class="jxr_string">" failures and because of "</span> + future.getCause());
+<a name="245" href="#245">245</a>
+<a name="246" href="#246">246</a> ChannelFuture connectionFuture =
+<a name="247" href="#247">247</a> bootstrap.connect(waitingConnection.address);
+<a name="248" href="#248">248</a> nextCheckFutures.add(<strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/NettyClient.html">ChannelFutureAddress</a>(connectionFuture,
+<a name="249" href="#249">249</a> waitingConnection.address));
+<a name="250" href="#250">250</a> ++failures;
+<a name="251" href="#251">251</a> } <strong class="jxr_keyword">else</strong> {
+<a name="252" href="#252">252</a> Channel channel = future.getChannel();
+<a name="253" href="#253">253</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
+<a name="254" href="#254">254</a> LOG.info(<span class="jxr_string">"connectAllAddresses: Connected to "</span> +
+<a name="255" href="#255">255</a> channel.getRemoteAddress());
+<a name="256" href="#256">256</a> }
+<a name="257" href="#257">257</a>
+<a name="258" href="#258">258</a> <strong class="jxr_keyword">if</strong> (channel.getRemoteAddress() == <strong class="jxr_keyword">null</strong>) {
+<a name="259" href="#259">259</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="260" href="#260">260</a> <span class="jxr_string">"connectAllAddresses: Null remote address!"</span>);
+<a name="261" href="#261">261</a> }
+<a name="262" href="#262">262</a>
+<a name="263" href="#263">263</a> <a href="../../../../org/apache/giraph/comm/ChannelRotater.html">ChannelRotater</a> rotater =
+<a name="264" href="#264">264</a> addressChannelMap.get(waitingConnection.address);
+<a name="265" href="#265">265</a> <strong class="jxr_keyword">if</strong> (rotater == <strong class="jxr_keyword">null</strong>) {
+<a name="266" href="#266">266</a> rotater = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/ChannelRotater.html">ChannelRotater</a>();
+<a name="267" href="#267">267</a> addressChannelMap.put(waitingConnection.address, rotater);
+<a name="268" href="#268">268</a> }
+<a name="269" href="#269">269</a> rotater.addChannel(future.getChannel());
+<a name="270" href="#270">270</a> ++connected;
+<a name="271" href="#271">271</a> }
+<a name="272" href="#272">272</a> }
+<a name="273" href="#273">273</a> LOG.info(<span class="jxr_string">"connectAllAddresses: Successfully added "</span> +
+<a name="274" href="#274">274</a> (waitingConnectionList.size() - nextCheckFutures.size()) +
+<a name="275" href="#275">275</a> <span class="jxr_string">" connections, ("</span> + connected + <span class="jxr_string">" total connected) "</span> +
+<a name="276" href="#276">276</a> nextCheckFutures.size() + <span class="jxr_string">" failed, "</span> +
+<a name="277" href="#277">277</a> failures + <span class="jxr_string">" failures total."</span>);
+<a name="278" href="#278">278</a> <strong class="jxr_keyword">if</strong> (nextCheckFutures.isEmpty()) {
+<a name="279" href="#279">279</a> <strong class="jxr_keyword">break</strong>;
+<a name="280" href="#280">280</a> }
+<a name="281" href="#281">281</a> waitingConnectionList = nextCheckFutures;
+<a name="282" href="#282">282</a> }
+<a name="283" href="#283">283</a> <strong class="jxr_keyword">if</strong> (failures >= maxConnectionFailures) {
+<a name="284" href="#284">284</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="285" href="#285">285</a> <span class="jxr_string">"connectAllAddresses: Too many failures ("</span> + failures + <span class="jxr_string">")."</span>);
+<a name="286" href="#286">286</a> }
+<a name="287" href="#287">287</a> }
+<a name="288" href="#288">288</a>
+<a name="289" href="#289">289</a> <em class="jxr_javadoccomment">/**</em>
+<a name="290" href="#290">290</a> <em class="jxr_javadoccomment"> * Stop the client.</em>
+<a name="291" href="#291">291</a> <em class="jxr_javadoccomment"> */</em>
+<a name="292" href="#292">292</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> stop() {
+<a name="293" href="#293">293</a> <em class="jxr_comment">// Close connections asyncronously, in a Netty-approved</em>
+<a name="294" href="#294">294</a> <em class="jxr_comment">// way, without cleaning up thread pools until all channels</em>
+<a name="295" href="#295">295</a> <em class="jxr_comment">// in addressChannelMap are closed (success or failure)</em>
+<a name="296" href="#296">296</a> <strong class="jxr_keyword">int</strong> channelCount = 0;
+<a name="297" href="#297">297</a> <strong class="jxr_keyword">for</strong> (ChannelRotater channelRotater : addressChannelMap.values()) {
+<a name="298" href="#298">298</a> channelCount += channelRotater.getChannels().size();
+<a name="299" href="#299">299</a> }
+<a name="300" href="#300">300</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> done = channelCount;
+<a name="301" href="#301">301</a> <strong class="jxr_keyword">final</strong> AtomicInteger count = <strong class="jxr_keyword">new</strong> AtomicInteger(0);
+<a name="302" href="#302">302</a> <strong class="jxr_keyword">for</strong> (ChannelRotater channelRotater : addressChannelMap.values()) {
+<a name="303" href="#303">303</a> <strong class="jxr_keyword">for</strong> (Channel channel : channelRotater.getChannels()) {
+<a name="304" href="#304">304</a> ChannelFuture result = channel.close();
+<a name="305" href="#305">305</a> result.addListener(<strong class="jxr_keyword">new</strong> ChannelFutureListener() {
+<a name="306" href="#306">306</a> @Override
+<a name="307" href="#307">307</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> operationComplete(ChannelFuture cf) {
+<a name="308" href="#308">308</a> <strong class="jxr_keyword">if</strong> (count.incrementAndGet() == done) {
+<a name="309" href="#309">309</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
+<a name="310" href="#310">310</a> LOG.info(<span class="jxr_string">"stop: reached wait threshold, "</span> +
+<a name="311" href="#311">311</a> done + <span class="jxr_string">" connections closed, releasing "</span> +
+<a name="312" href="#312">312</a> <span class="jxr_string">"NettyClient.bootstrap resources now."</span>);
+<a name="313" href="#313">313</a> }
+<a name="314" href="#314">314</a> bootstrap.releaseExternalResources();
+<a name="315" href="#315">315</a> }
+<a name="316" href="#316">316</a> }
+<a name="317" href="#317">317</a> });
+<a name="318" href="#318">318</a> }
+<a name="319" href="#319">319</a> }
+<a name="320" href="#320">320</a> }
+<a name="321" href="#321">321</a>
+<a name="322" href="#322">322</a> <em class="jxr_javadoccomment">/**</em>
+<a name="323" href="#323">323</a> <em class="jxr_javadoccomment"> * Send a request to a remote server (should be already connected)</em>
+<a name="324" href="#324">324</a> <em class="jxr_javadoccomment"> *</em>
+<a name="325" href="#325">325</a> <em class="jxr_javadoccomment"> * @param remoteServer Server to send the request to</em>
+<a name="326" href="#326">326</a> <em class="jxr_javadoccomment"> * @param request Request to send</em>
+<a name="327" href="#327">327</a> <em class="jxr_javadoccomment"> */</em>
+<a name="328" href="#328">328</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> sendWritableRequest(InetSocketAddress remoteServer,
+<a name="329" href="#329">329</a> WritableRequest<I, V, E, M> request) {
+<a name="330" href="#330">330</a> <strong class="jxr_keyword">if</strong> (outstandingRequestMap.isEmpty()) {
+<a name="331" href="#331">331</a> byteCounter.resetAll();
+<a name="332" href="#332">332</a> }
+<a name="333" href="#333">333</a> request.setRequestId(requestId.incrementAndGet());
+<a name="334" href="#334">334</a> Channel channel = addressChannelMap.get(remoteServer).nextChannel();
+<a name="335" href="#335">335</a> <strong class="jxr_keyword">if</strong> (channel == <strong class="jxr_keyword">null</strong>) {
+<a name="336" href="#336">336</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="337" href="#337">337</a> <span class="jxr_string">"sendWritableRequest: No channel exists for "</span> + remoteServer);
+<a name="338" href="#338">338</a> }
+<a name="339" href="#339">339</a> <a href="../../../../org/apache/giraph/comm/RequestInfo.html">RequestInfo</a> newRequestInfo = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/comm/RequestInfo.html">RequestInfo</a>(remoteServer);
+<a name="340" href="#340">340</a> <a href="../../../../org/apache/giraph/comm/RequestInfo.html">RequestInfo</a> oldRequestInfo = outstandingRequestMap.putIfAbsent(
+<a name="341" href="#341">341</a> request.getRequestId(), newRequestInfo);
+<a name="342" href="#342">342</a> <strong class="jxr_keyword">if</strong> (oldRequestInfo != <strong class="jxr_keyword">null</strong>) {
+<a name="343" href="#343">343</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"sendWritableRequest: Impossible to "</span> +
+<a name="344" href="#344">344</a> <span class="jxr_string">"have a previous request id = "</span> + request.getRequestId() + <span class="jxr_string">", "</span> +
+<a name="345" href="#345">345</a> <span class="jxr_string">"request info of "</span> + oldRequestInfo);
+<a name="346" href="#346">346</a> }
+<a name="347" href="#347">347</a> ChannelFuture writeFuture = channel.write(request);
+<a name="348" href="#348">348</a> newRequestInfo.setWriteFuture(writeFuture);
+<a name="349" href="#349">349</a>
+<a name="350" href="#350">350</a> <strong class="jxr_keyword">if</strong> (limitNumberOfOpenRequests &&
+<a name="351" href="#351">351</a> outstandingRequestMap.size() > maxNumberOfOpenRequests) {
+<a name="352" href="#352">352</a> waitSomeRequests(maxNumberOfOpenRequests);
+<a name="353" href="#353">353</a> }
+<a name="354" href="#354">354</a> }
+<a name="355" href="#355">355</a>
+<a name="356" href="#356">356</a> <em class="jxr_javadoccomment">/**</em>
+<a name="357" href="#357">357</a> <em class="jxr_javadoccomment"> * Ensure all the request sent so far are complete.</em>
+<a name="358" href="#358">358</a> <em class="jxr_javadoccomment"> *</em>
+<a name="359" href="#359">359</a> <em class="jxr_javadoccomment"> * @throws InterruptedException</em>
+<a name="360" href="#360">360</a> <em class="jxr_javadoccomment"> */</em>
+<a name="361" href="#361">361</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> waitAllRequests() {
+<a name="362" href="#362">362</a> waitSomeRequests(0);
+<a name="363" href="#363">363</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
+<a name="364" href="#364">364</a> LOG.info(<span class="jxr_string">"waitAllRequests: Finished all requests. "</span> +
+<a name="365" href="#365">365</a> byteCounter.getMetrics());
+<a name="366" href="#366">366</a> }
+<a name="367" href="#367">367</a> }
+<a name="368" href="#368">368</a>
+<a name="369" href="#369">369</a> <em class="jxr_javadoccomment">/**</em>
+<a name="370" href="#370">370</a> <em class="jxr_javadoccomment"> * Ensure that at most maxOpenRequests are not complete</em>
+<a name="371" href="#371">371</a> <em class="jxr_javadoccomment"> *</em>
+<a name="372" href="#372">372</a> <em class="jxr_javadoccomment"> * @param maxOpenRequests Maximum number of requests which can be not</em>
+<a name="373" href="#373">373</a> <em class="jxr_javadoccomment"> * complete</em>
+<a name="374" href="#374">374</a> <em class="jxr_javadoccomment"> */</em>
+<a name="375" href="#375">375</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> waitSomeRequests(<strong class="jxr_keyword">int</strong> maxOpenRequests) {
+<a name="376" href="#376">376</a> <strong class="jxr_keyword">synchronized</strong> (outstandingRequestMap) {
+<a name="377" href="#377">377</a> <strong class="jxr_keyword">while</strong> (outstandingRequestMap.size() > maxOpenRequests) {
+<a name="378" href="#378">378</a> <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled() && requestLogger.isPrintable()) {
+<a name="379" href="#379">379</a> LOG.info(<span class="jxr_string">"waitSomeRequests: Waiting interval of "</span> +
+<a name="380" href="#380">380</a> WAITING_REQUEST_MSECS + <span class="jxr_string">" msecs, "</span> +
+<a name="381" href="#381">381</a> outstandingRequestMap.size() +
+<a name="382" href="#382">382</a> <span class="jxr_string">" open requests, waiting for it to be <= "</span> + maxOpenRequests +
+<a name="383" href="#383">383</a> <span class="jxr_string">", "</span> + byteCounter.getMetrics());
+<a name="384" href="#384">384</a>
+<a name="385" href="#385">385</a> <strong class="jxr_keyword">if</strong> (outstandingRequestMap.size() < MAX_REQUESTS_TO_LIST) {
+<a name="386" href="#386">386</a> <strong class="jxr_keyword">for</strong> (Map.Entry<Long, RequestInfo> entry :
+<a name="387" href="#387">387</a> outstandingRequestMap.entrySet()) {
+<a name="388" href="#388">388</a> LOG.info(<span class="jxr_string">"waitSomeRequests: Waiting for request "</span> +
+<a name="389" href="#389">389</a> entry.getKey() + <span class="jxr_string">" - "</span> + entry.getValue());
+<a name="390" href="#390">390</a> }
+<a name="391" href="#391">391</a> }
+<a name="392" href="#392">392</a> }
+<a name="393" href="#393">393</a> <strong class="jxr_keyword">try</strong> {
+<a name="394" href="#394">394</a> outstandingRequestMap.wait(WAITING_REQUEST_MSECS);
+<a name="395" href="#395">395</a> } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a name="396" href="#396">396</a> LOG.error(<span class="jxr_string">"waitFutures: Got unexpected InterruptedException"</span>, e);
+<a name="397" href="#397">397</a> }
+<a name="398" href="#398">398</a> <em class="jxr_comment">// Make sure that waiting doesn't kill the job</em>
+<a name="399" href="#399">399</a> context.progress();
+<a name="400" href="#400">400</a> }
+<a name="401" href="#401">401</a> }
+<a name="402" href="#402">402</a> }
+<a name="403" href="#403">403</a>
+<a name="404" href="#404">404</a> <em class="jxr_javadoccomment">/**</em>
+<a name="405" href="#405">405</a> <em class="jxr_javadoccomment"> * Returning configuration of the first channel.</em>
+<a name="406" href="#406">406</a> <em class="jxr_javadoccomment"> * @throws ArrayIndexOutOfBoundsException if no</em>
+<a name="407" href="#407">407</a> <em class="jxr_javadoccomment"> * channels exist in the client's address => channel map.</em>
+<a name="408" href="#408">408</a> <em class="jxr_javadoccomment"> * @return ChannelConfig for the first channel (if any).</em>
+<a name="409" href="#409">409</a> <em class="jxr_javadoccomment"> */</em>
+<a name="410" href="#410">410</a> <strong class="jxr_keyword">public</strong> ChannelConfig getChannelConfig() {
+<a name="411" href="#411">411</a> <strong class="jxr_keyword">return</strong> ((Channel) addressChannelMap.values().toArray()[0]).getConfig();
+<a name="412" href="#412">412</a> }
+<a name="413" href="#413">413</a>
+<a name="414" href="#414">414</a> }
</pre>
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