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From ekoo...@apache.org
Subject svn commit: r1373684 [32/35] - 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...
Date Thu, 16 Aug 2012 01:32:58 GMT
Modified: giraph/site/xref/org/apache/giraph/graph/BspServiceMaster.html
URL: http://svn.apache.org/viewvc/giraph/site/xref/org/apache/giraph/graph/BspServiceMaster.html?rev=1373684&r1=1373683&r2=1373684&view=diff
==============================================================================
--- giraph/site/xref/org/apache/giraph/graph/BspServiceMaster.html (original)
+++ giraph/site/xref/org/apache/giraph/graph/BspServiceMaster.html Thu Aug 16 01:32:41 2012
@@ -28,1797 +28,1855 @@
 <a name="18" href="#18">18</a>  
 <a name="19" href="#19">19</a>  <strong class="jxr_keyword">package</strong> org.apache.giraph.graph;
 <a name="20" href="#20">20</a>  
-<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.ApplicationState;
-<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.BspInputFormat;
-<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.CentralizedServiceMaster;
-<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.SuperstepState;
-<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.GraphMapper.MapFunctions;
-<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.MasterGraphPartitioner;
-<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.PartitionOwner;
-<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.PartitionStats;
-<a name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.PartitionUtils;
-<a name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.utils.WritableUtils;
-<a name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.zk.BspEvent;
-<a name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.zk.PredicateLock;
-<a name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FSDataOutputStream;
-<a name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FileStatus;
-<a name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FileSystem;
-<a name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.Path;
-<a name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.PathFilter;
-<a name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.Text;
-<a name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.Writable;
-<a name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.WritableComparable;
-<a name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapred.RunningJob;
-<a name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.Counter;
-<a name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.InputSplit;
-<a name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.Mapper;
-<a name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
-<a name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.CreateMode;
-<a name="47" href="#47">47</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.KeeperException;
-<a name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.WatchedEvent;
-<a name="49" href="#49">49</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.Watcher.Event.EventType;
-<a name="50" href="#50">50</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooDefs.Ids;
-<a name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> org.json.JSONException;
-<a name="52" href="#52">52</a>  <strong class="jxr_keyword">import</strong> org.json.JSONObject;
-<a name="53" href="#53">53</a>  
-<a name="54" href="#54">54</a>  <strong class="jxr_keyword">import</strong> net.iharder.Base64;
-<a name="55" href="#55">55</a>  
-<a name="56" href="#56">56</a>  <strong class="jxr_keyword">import</strong> java.io.ByteArrayInputStream;
-<a name="57" href="#57">57</a>  <strong class="jxr_keyword">import</strong> java.io.ByteArrayOutputStream;
-<a name="58" href="#58">58</a>  <strong class="jxr_keyword">import</strong> java.io.DataInputStream;
-<a name="59" href="#59">59</a>  <strong class="jxr_keyword">import</strong> java.io.DataOutput;
-<a name="60" href="#60">60</a>  <strong class="jxr_keyword">import</strong> java.io.DataOutputStream;
-<a name="61" href="#61">61</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
-<a name="62" href="#62">62</a>  <strong class="jxr_keyword">import</strong> java.util.AbstractMap;
-<a name="63" href="#63">63</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
-<a name="64" href="#64">64</a>  <strong class="jxr_keyword">import</strong> java.util.Arrays;
-<a name="65" href="#65">65</a>  <strong class="jxr_keyword">import</strong> java.util.Collection;
-<a name="66" href="#66">66</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
-<a name="67" href="#67">67</a>  <strong class="jxr_keyword">import</strong> java.util.HashSet;
-<a name="68" href="#68">68</a>  <strong class="jxr_keyword">import</strong> java.util.List;
-<a name="69" href="#69">69</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
-<a name="70" href="#70">70</a>  <strong class="jxr_keyword">import</strong> java.util.Map.Entry;
-<a name="71" href="#71">71</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
-<a name="72" href="#72">72</a>  <strong class="jxr_keyword">import</strong> java.util.TreeSet;
-<a name="73" href="#73">73</a>  
-<a name="74" href="#74">74</a>  <strong class="jxr_keyword">import</strong> com.google.common.base.Function;
-<a name="75" href="#75">75</a>  <strong class="jxr_keyword">import</strong> com.google.common.collect.Iterables;
-<a name="76" href="#76">76</a>  
-<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment">/**</em>
-<a name="78" href="#78">78</a>  <em class="jxr_javadoccomment"> * ZooKeeper-based implementation of {@link CentralizedServiceMaster}.</em>
-<a name="79" href="#79">79</a>  <em class="jxr_javadoccomment"> *</em>
-<a name="80" href="#80">80</a>  <em class="jxr_javadoccomment"> * @param &lt;I&gt; Vertex id</em>
-<a name="81" href="#81">81</a>  <em class="jxr_javadoccomment"> * @param &lt;V&gt; Vertex data</em>
-<a name="82" href="#82">82</a>  <em class="jxr_javadoccomment"> * @param &lt;E&gt; Edge data</em>
-<a name="83" href="#83">83</a>  <em class="jxr_javadoccomment"> * @param &lt;M&gt; Message data</em>
-<a name="84" href="#84">84</a>  <em class="jxr_javadoccomment"> */</em>
-<a name="85" href="#85">85</a>  @SuppressWarnings(<span class="jxr_string">"rawtypes"</span>)
-<a name="86" href="#86">86</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> BspServiceMaster&lt;I <strong class="jxr_keyword">extends</strong> WritableComparable,
-<a name="87" href="#87">87</a>      V <strong class="jxr_keyword">extends</strong> Writable, E <strong class="jxr_keyword">extends</strong> Writable, M <strong class="jxr_keyword">extends</strong> Writable&gt;
-<a name="88" href="#88">88</a>      <strong class="jxr_keyword">extends</strong> BspService&lt;I, V, E, M&gt;
-<a name="89" href="#89">89</a>      implements CentralizedServiceMaster&lt;I, V, E, M&gt; {
-<a name="90" href="#90">90</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Counter group name for the Giraph statistics */</em>
-<a name="91" href="#91">91</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String GIRAPH_STATS_COUNTER_GROUP_NAME = <span class="jxr_string">"Giraph Stats"</span>;
-<a name="92" href="#92">92</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Class logger */</em>
-<a name="93" href="#93">93</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = Logger.getLogger(BspServiceMaster.<strong class="jxr_keyword">class</strong>);
-<a name="94" href="#94">94</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Superstep counter */</em>
-<a name="95" href="#95">95</a>    <strong class="jxr_keyword">private</strong> Counter superstepCounter = <strong class="jxr_keyword">null</strong>;
-<a name="96" href="#96">96</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/graph/Vertex.html">Vertex</a> counter */</em>
-<a name="97" href="#97">97</a>    <strong class="jxr_keyword">private</strong> Counter vertexCounter = <strong class="jxr_keyword">null</strong>;
-<a name="98" href="#98">98</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Finished vertex counter */</em>
-<a name="99" href="#99">99</a>    <strong class="jxr_keyword">private</strong> Counter finishedVertexCounter = <strong class="jxr_keyword">null</strong>;
-<a name="100" href="#100">100</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/graph/Edge.html">Edge</a> counter */</em>
-<a name="101" href="#101">101</a>   <strong class="jxr_keyword">private</strong> Counter edgeCounter = <strong class="jxr_keyword">null</strong>;
-<a name="102" href="#102">102</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Sent messages counter */</em>
-<a name="103" href="#103">103</a>   <strong class="jxr_keyword">private</strong> Counter sentMessagesCounter = <strong class="jxr_keyword">null</strong>;
-<a name="104" href="#104">104</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Workers on this superstep */</em>
-<a name="105" href="#105">105</a>   <strong class="jxr_keyword">private</strong> Counter currentWorkersCounter = <strong class="jxr_keyword">null</strong>;
-<a name="106" href="#106">106</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Current master task partition */</em>
-<a name="107" href="#107">107</a>   <strong class="jxr_keyword">private</strong> Counter currentMasterTaskPartitionCounter = <strong class="jxr_keyword">null</strong>;
-<a name="108" href="#108">108</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Last checkpointed superstep */</em>
-<a name="109" href="#109">109</a>   <strong class="jxr_keyword">private</strong> Counter lastCheckpointedSuperstepCounter = <strong class="jxr_keyword">null</strong>;
-<a name="110" href="#110">110</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Am I the master? */</em>
-<a name="111" href="#111">111</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> isMaster = false;
-<a name="112" href="#112">112</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Max number of workers */</em>
-<a name="113" href="#113">113</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxWorkers;
-<a name="114" href="#114">114</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Min number of workers */</em>
-<a name="115" href="#115">115</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> minWorkers;
-<a name="116" href="#116">116</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Min % responded workers */</em>
-<a name="117" href="#117">117</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">float</strong> minPercentResponded;
-<a name="118" href="#118">118</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Poll period in msecs */</em>
-<a name="119" href="#119">119</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> msecsPollPeriod;
-<a name="120" href="#120">120</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Max number of poll attempts */</em>
-<a name="121" href="#121">121</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxPollAttempts;
-<a name="122" href="#122">122</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Min number of long tails before printing */</em>
-<a name="123" href="#123">123</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> partitionLongTailMinPrint;
-<a name="124" href="#124">124</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Last finalized checkpoint */</em>
-<a name="125" href="#125">125</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> lastCheckpointedSuperstep = -1;
-<a name="126" href="#126">126</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/zk/ZooKeeperManager.html">State</a> of the superstep changed */</em>
-<a name="127" href="#127">127</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/giraph/zk/BspEvent.html">BspEvent</a> superstepStateChanged;
-<a name="128" href="#128">128</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Master graph partitioner */</em>
-<a name="129" href="#129">129</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> MasterGraphPartitioner&lt;I, V, E, M&gt; masterGraphPartitioner;
-<a name="130" href="#130">130</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> All the partition stats from the last superstep */</em>
-<a name="131" href="#131">131</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List&lt;PartitionStats&gt; allPartitionStatsList =
-<a name="132" href="#132">132</a>       <strong class="jxr_keyword">new</strong> ArrayList&lt;PartitionStats&gt;();
-<a name="133" href="#133">133</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/graph/Aggregator.html">Aggregator</a> writer */</em>
-<a name="134" href="#134">134</a>   <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/giraph/graph/AggregatorWriter.html">AggregatorWriter</a> aggregatorWriter;
-<a name="135" href="#135">135</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Master class */</em>
-<a name="136" href="#136">136</a>   <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/giraph/graph/MasterCompute.html">MasterCompute</a> masterCompute;
-<a name="137" href="#137">137</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Limit locality information added to each InputSplit znode */</em>
-<a name="138" href="#138">138</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> localityLimit = 5;
-<a name="139" href="#139">139</a> 
-<a name="140" href="#140">140</a>   <em class="jxr_javadoccomment">/**</em>
-<a name="141" href="#141">141</a> <em class="jxr_javadoccomment">   * Constructor for setting up the master.</em>
-<a name="142" href="#142">142</a> <em class="jxr_javadoccomment">   *</em>
-<a name="143" href="#143">143</a> <em class="jxr_javadoccomment">   * @param serverPortList ZooKeeper server port list</em>
-<a name="144" href="#144">144</a> <em class="jxr_javadoccomment">   * @param sessionMsecTimeout Msecs to timeout connecting to ZooKeeper</em>
-<a name="145" href="#145">145</a> <em class="jxr_javadoccomment">   * @param context Mapper context</em>
-<a name="146" href="#146">146</a> <em class="jxr_javadoccomment">   * @param graphMapper Graph mapper</em>
-<a name="147" href="#147">147</a> <em class="jxr_javadoccomment">   */</em>
-<a name="148" href="#148">148</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/giraph/graph/BspServiceMaster.html">BspServiceMaster</a>(
-<a name="149" href="#149">149</a>       String serverPortList,
-<a name="150" href="#150">150</a>       <strong class="jxr_keyword">int</strong> sessionMsecTimeout,
-<a name="151" href="#151">151</a>       Mapper&lt;?, ?, ?, ?&gt;.Context context,
-<a name="152" href="#152">152</a>       GraphMapper&lt;I, V, E, M&gt; graphMapper) {
-<a name="153" href="#153">153</a>     <strong class="jxr_keyword">super</strong>(serverPortList, sessionMsecTimeout, context, graphMapper);
-<a name="154" href="#154">154</a>     superstepStateChanged = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/zk/PredicateLock.html">PredicateLock</a>(context);
-<a name="155" href="#155">155</a>     registerBspEvent(superstepStateChanged);
-<a name="156" href="#156">156</a> 
-<a name="157" href="#157">157</a>     maxWorkers =
-<a name="158" href="#158">158</a>         getConfiguration().getInt(GiraphJob.MAX_WORKERS, -1);
-<a name="159" href="#159">159</a>     minWorkers =
-<a name="160" href="#160">160</a>         getConfiguration().getInt(GiraphJob.MIN_WORKERS, -1);
-<a name="161" href="#161">161</a>     minPercentResponded =
-<a name="162" href="#162">162</a>         getConfiguration().getFloat(GiraphJob.MIN_PERCENT_RESPONDED,
-<a name="163" href="#163">163</a>             100.0f);
-<a name="164" href="#164">164</a>     msecsPollPeriod =
-<a name="165" href="#165">165</a>         getConfiguration().getInt(GiraphJob.POLL_MSECS,
-<a name="166" href="#166">166</a>             GiraphJob.POLL_MSECS_DEFAULT);
-<a name="167" href="#167">167</a>     maxPollAttempts =
-<a name="168" href="#168">168</a>         getConfiguration().getInt(GiraphJob.POLL_ATTEMPTS,
-<a name="169" href="#169">169</a>             GiraphJob.POLL_ATTEMPTS_DEFAULT);
-<a name="170" href="#170">170</a>     partitionLongTailMinPrint = getConfiguration().getInt(
-<a name="171" href="#171">171</a>         GiraphJob.PARTITION_LONG_TAIL_MIN_PRINT,
-<a name="172" href="#172">172</a>         GiraphJob.PARTITION_LONG_TAIL_MIN_PRINT_DEFAULT);
-<a name="173" href="#173">173</a>     masterGraphPartitioner =
-<a name="174" href="#174">174</a>         getGraphPartitionerFactory().createMasterGraphPartitioner();
-<a name="175" href="#175">175</a>   }
-<a name="176" href="#176">176</a> 
-<a name="177" href="#177">177</a>   @Override
-<a name="178" href="#178">178</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setJobState(<a href="../../../../org/apache/giraph/bsp/ApplicationState.html">ApplicationState</a> state,
-<a name="179" href="#179">179</a>       <strong class="jxr_keyword">long</strong> applicationAttempt,
-<a name="180" href="#180">180</a>       <strong class="jxr_keyword">long</strong> desiredSuperstep) {
-<a name="181" href="#181">181</a>     JSONObject jobState = <strong class="jxr_keyword">new</strong> JSONObject();
-<a name="182" href="#182">182</a>     <strong class="jxr_keyword">try</strong> {
-<a name="183" href="#183">183</a>       jobState.put(JSONOBJ_STATE_KEY, state.toString());
-<a name="184" href="#184">184</a>       jobState.put(JSONOBJ_APPLICATION_ATTEMPT_KEY, applicationAttempt);
-<a name="185" href="#185">185</a>       jobState.put(JSONOBJ_SUPERSTEP_KEY, desiredSuperstep);
-<a name="186" href="#186">186</a>     } <strong class="jxr_keyword">catch</strong> (JSONException e) {
-<a name="187" href="#187">187</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(<span class="jxr_string">"setJobState: Coudn't put "</span> +
-<a name="188" href="#188">188</a>           state.toString());
-<a name="189" href="#189">189</a>     }
-<a name="190" href="#190">190</a>     <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="191" href="#191">191</a>       LOG.info(<span class="jxr_string">"setJobState: "</span> + jobState.toString() + <span class="jxr_string">" on superstep "</span> +
-<a name="192" href="#192">192</a>           getSuperstep());
-<a name="193" href="#193">193</a>     }
-<a name="194" href="#194">194</a>     <strong class="jxr_keyword">try</strong> {
-<a name="195" href="#195">195</a>       getZkExt().createExt(masterJobStatePath + <span class="jxr_string">"/jobState"</span>,
-<a name="196" href="#196">196</a>           jobState.toString().getBytes(),
-<a name="197" href="#197">197</a>           Ids.OPEN_ACL_UNSAFE,
-<a name="198" href="#198">198</a>           CreateMode.PERSISTENT_SEQUENTIAL,
-<a name="199" href="#199">199</a>           <strong class="jxr_keyword">true</strong>);
-<a name="200" href="#200">200</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException.NodeExistsException e) {
-<a name="201" href="#201">201</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="202" href="#202">202</a>           <span class="jxr_string">"setJobState: Imposible that "</span> +
-<a name="203" href="#203">203</a>               masterJobStatePath + <span class="jxr_string">" already exists!"</span>, e);
-<a name="204" href="#204">204</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a name="205" href="#205">205</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="206" href="#206">206</a>           <span class="jxr_string">"setJobState: Unknown KeeperException for "</span> +
-<a name="207" href="#207">207</a>               masterJobStatePath, e);
-<a name="208" href="#208">208</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a name="209" href="#209">209</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="210" href="#210">210</a>           <span class="jxr_string">"setJobState: Unknown InterruptedException for "</span> +
-<a name="211" href="#211">211</a>               masterJobStatePath, e);
-<a name="212" href="#212">212</a>     }
-<a name="213" href="#213">213</a> 
-<a name="214" href="#214">214</a>     <strong class="jxr_keyword">if</strong> (state == ApplicationState.FAILED) {
-<a name="215" href="#215">215</a>       failJob();
-<a name="216" href="#216">216</a>     }
-<a name="217" href="#217">217</a>   }
-<a name="218" href="#218">218</a> 
-<a name="219" href="#219">219</a>   <em class="jxr_javadoccomment">/**</em>
-<a name="220" href="#220">220</a> <em class="jxr_javadoccomment">   * Master uses this to calculate the {@link VertexInputFormat}</em>
-<a name="221" href="#221">221</a> <em class="jxr_javadoccomment">   * input splits and write it to ZooKeeper.</em>
-<a name="222" href="#222">222</a> <em class="jxr_javadoccomment">   *</em>
-<a name="223" href="#223">223</a> <em class="jxr_javadoccomment">   * @param numWorkers Number of available workers</em>
-<a name="224" href="#224">224</a> <em class="jxr_javadoccomment">   * @return List of input splits</em>
-<a name="225" href="#225">225</a> <em class="jxr_javadoccomment">   * @throws InstantiationException</em>
-<a name="226" href="#226">226</a> <em class="jxr_javadoccomment">   * @throws IllegalAccessException</em>
-<a name="227" href="#227">227</a> <em class="jxr_javadoccomment">   * @throws IOException</em>
-<a name="228" href="#228">228</a> <em class="jxr_javadoccomment">   * @throws InterruptedException</em>
-<a name="229" href="#229">229</a> <em class="jxr_javadoccomment">   */</em>
-<a name="230" href="#230">230</a>   <strong class="jxr_keyword">private</strong> List&lt;InputSplit&gt; generateInputSplits(<strong class="jxr_keyword">int</strong> numWorkers) {
-<a name="231" href="#231">231</a>     VertexInputFormat&lt;I, V, E, M&gt; vertexInputFormat =
-<a name="232" href="#232">232</a>         BspUtils.&lt;I, V, E, M&gt;createVertexInputFormat(getConfiguration());
-<a name="233" href="#233">233</a>     List&lt;InputSplit&gt; splits;
-<a name="234" href="#234">234</a>     <strong class="jxr_keyword">try</strong> {
-<a name="235" href="#235">235</a>       splits = vertexInputFormat.getSplits(getContext(), numWorkers);
-<a name="236" href="#236">236</a>       <strong class="jxr_keyword">float</strong> samplePercent =
-<a name="237" href="#237">237</a>           getConfiguration().getFloat(
-<a name="238" href="#238">238</a>               GiraphJob.INPUT_SPLIT_SAMPLE_PERCENT,
-<a name="239" href="#239">239</a>               GiraphJob.INPUT_SPLIT_SAMPLE_PERCENT_DEFAULT);
-<a name="240" href="#240">240</a>       <strong class="jxr_keyword">if</strong> (samplePercent != GiraphJob.INPUT_SPLIT_SAMPLE_PERCENT_DEFAULT) {
-<a name="241" href="#241">241</a>         <strong class="jxr_keyword">int</strong> lastIndex = (<strong class="jxr_keyword">int</strong>) (samplePercent * splits.size() / 100f);
-<a name="242" href="#242">242</a>         List&lt;InputSplit&gt; sampleSplits = splits.subList(0, lastIndex);
-<a name="243" href="#243">243</a>         LOG.warn(<span class="jxr_string">"generateInputSplits: Using sampling - Processing "</span> +
-<a name="244" href="#244">244</a>             <span class="jxr_string">"only "</span> + sampleSplits.size() + <span class="jxr_string">" instead of "</span> +
-<a name="245" href="#245">245</a>             splits.size() + <span class="jxr_string">" expected splits."</span>);
-<a name="246" href="#246">246</a>         <strong class="jxr_keyword">return</strong> sampleSplits;
-<a name="247" href="#247">247</a>       } <strong class="jxr_keyword">else</strong> {
-<a name="248" href="#248">248</a>         <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="249" href="#249">249</a>           LOG.info(<span class="jxr_string">"generateInputSplits: Got "</span> + splits.size() +
-<a name="250" href="#250">250</a>               <span class="jxr_string">" input splits for "</span> + numWorkers + <span class="jxr_string">" workers"</span>);
-<a name="251" href="#251">251</a>         }
-<a name="252" href="#252">252</a>         <strong class="jxr_keyword">return</strong> splits;
-<a name="253" href="#253">253</a>       }
-<a name="254" href="#254">254</a>     } <strong class="jxr_keyword">catch</strong> (IOException e) {
-<a name="255" href="#255">255</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="256" href="#256">256</a>           <span class="jxr_string">"generateInputSplits: Got IOException"</span>, e);
-<a name="257" href="#257">257</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a name="258" href="#258">258</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="259" href="#259">259</a>           <span class="jxr_string">"generateInputSplits: Got InterruptedException"</span>, e);
-<a name="260" href="#260">260</a>     }
-<a name="261" href="#261">261</a>   }
-<a name="262" href="#262">262</a> 
-<a name="263" href="#263">263</a>   <em class="jxr_javadoccomment">/**</em>
-<a name="264" href="#264">264</a> <em class="jxr_javadoccomment">   * When there is no salvaging this job, fail it.</em>
-<a name="265" href="#265">265</a> <em class="jxr_javadoccomment">   *</em>
-<a name="266" href="#266">266</a> <em class="jxr_javadoccomment">   * @throws IOException</em>
-<a name="267" href="#267">267</a> <em class="jxr_javadoccomment">   */</em>
-<a name="268" href="#268">268</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> failJob() {
-<a name="269" href="#269">269</a>     LOG.fatal(<span class="jxr_string">"failJob: Killing job "</span> + getJobId());
-<a name="270" href="#270">270</a>     <strong class="jxr_keyword">try</strong> {
-<a name="271" href="#271">271</a>       @SuppressWarnings(<span class="jxr_string">"deprecation"</span>)
-<a name="272" href="#272">272</a>       org.apache.hadoop.mapred.JobClient jobClient =
-<a name="273" href="#273">273</a>           <strong class="jxr_keyword">new</strong> org.apache.hadoop.mapred.JobClient(
-<a name="274" href="#274">274</a>               (org.apache.hadoop.mapred.JobConf)
-<a name="275" href="#275">275</a>               getConfiguration());
-<a name="276" href="#276">276</a>       @SuppressWarnings(<span class="jxr_string">"deprecation"</span>)
-<a name="277" href="#277">277</a>       org.apache.hadoop.mapred.JobID jobId =
-<a name="278" href="#278">278</a>           org.apache.hadoop.mapred.JobID.forName(getJobId());
-<a name="279" href="#279">279</a>       RunningJob job = jobClient.getJob(jobId);
-<a name="280" href="#280">280</a>       job.killJob();
-<a name="281" href="#281">281</a>     } <strong class="jxr_keyword">catch</strong> (IOException e) {
-<a name="282" href="#282">282</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(e);
-<a name="283" href="#283">283</a>     }
-<a name="284" href="#284">284</a>   }
-<a name="285" href="#285">285</a> 
-<a name="286" href="#286">286</a>   <em class="jxr_javadoccomment">/**</em>
-<a name="287" href="#287">287</a> <em class="jxr_javadoccomment">   * Parse the {@link WorkerInfo} objects from a ZooKeeper path</em>
-<a name="288" href="#288">288</a> <em class="jxr_javadoccomment">   * (and children).</em>
-<a name="289" href="#289">289</a> <em class="jxr_javadoccomment">   *</em>
-<a name="290" href="#290">290</a> <em class="jxr_javadoccomment">   * @param workerInfosPath Path where all the workers are children</em>
-<a name="291" href="#291">291</a> <em class="jxr_javadoccomment">   * @param watch Watch or not?</em>
-<a name="292" href="#292">292</a> <em class="jxr_javadoccomment">   * @return List of workers in that path</em>
-<a name="293" href="#293">293</a> <em class="jxr_javadoccomment">   */</em>
-<a name="294" href="#294">294</a>   <strong class="jxr_keyword">private</strong> List&lt;WorkerInfo&gt; getWorkerInfosFromPath(String workerInfosPath,
-<a name="295" href="#295">295</a>       <strong class="jxr_keyword">boolean</strong> watch) {
-<a name="296" href="#296">296</a>     List&lt;WorkerInfo&gt; workerInfoList = <strong class="jxr_keyword">new</strong> ArrayList&lt;WorkerInfo&gt;();
-<a name="297" href="#297">297</a>     List&lt;String&gt; workerInfoPathList;
-<a name="298" href="#298">298</a>     <strong class="jxr_keyword">try</strong> {
-<a name="299" href="#299">299</a>       workerInfoPathList =
-<a name="300" href="#300">300</a>           getZkExt().getChildrenExt(workerInfosPath, watch, false, <strong class="jxr_keyword">true</strong>);
-<a name="301" href="#301">301</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a name="302" href="#302">302</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="303" href="#303">303</a>           <span class="jxr_string">"getWorkers: Got KeeperException"</span>, e);
-<a name="304" href="#304">304</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a name="305" href="#305">305</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
-<a name="306" href="#306">306</a>           <span class="jxr_string">"getWorkers: Got InterruptedStateException"</span>, e);
-<a name="307" href="#307">307</a>     }
-<a name="308" href="#308">308</a>     <strong class="jxr_keyword">for</strong> (String workerInfoPath : workerInfoPathList) {
-<a name="309" href="#309">309</a>       <a href="../../../../org/apache/giraph/graph/WorkerInfo.html">WorkerInfo</a> workerInfo = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/graph/WorkerInfo.html">WorkerInfo</a>();
-<a name="310" href="#310">310</a>       WritableUtils.readFieldsFromZnode(
-<a name="311" href="#311">311</a>           getZkExt(), workerInfoPath, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">null</strong>, workerInfo);
-<a name="312" href="#312">312</a>       workerInfoList.add(workerInfo);
-<a name="313" href="#313">313</a>     }
-<a name="314" href="#314">314</a>     <strong class="jxr_keyword">return</strong> workerInfoList;
-<a name="315" href="#315">315</a>   }
-<a name="316" href="#316">316</a> 
-<a name="317" href="#317">317</a>   <em class="jxr_javadoccomment">/**</em>
-<a name="318" href="#318">318</a> <em class="jxr_javadoccomment">   * Get the healthy and unhealthy {@link WorkerInfo} objects for</em>
-<a name="319" href="#319">319</a> <em class="jxr_javadoccomment">   * a superstep</em>
-<a name="320" href="#320">320</a> <em class="jxr_javadoccomment">   *</em>
-<a name="321" href="#321">321</a> <em class="jxr_javadoccomment">   * @param superstep superstep to check</em>
-<a name="322" href="#322">322</a> <em class="jxr_javadoccomment">   * @param healthyWorkerInfoList filled in with current data</em>
-<a name="323" href="#323">323</a> <em class="jxr_javadoccomment">   * @param unhealthyWorkerInfoList filled in with current data</em>
-<a name="324" href="#324">324</a> <em class="jxr_javadoccomment">   */</em>
-<a name="325" href="#325">325</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> getAllWorkerInfos(
-<a name="326" href="#326">326</a>       <strong class="jxr_keyword">long</strong> superstep,
-<a name="327" href="#327">327</a>       List&lt;WorkerInfo&gt; healthyWorkerInfoList,
-<a name="328" href="#328">328</a>       List&lt;WorkerInfo&gt; unhealthyWorkerInfoList) {
-<a name="329" href="#329">329</a>     String healthyWorkerInfoPath =
-<a name="330" href="#330">330</a>         getWorkerInfoHealthyPath(getApplicationAttempt(), superstep);
-<a name="331" href="#331">331</a>     String unhealthyWorkerInfoPath =
-<a name="332" href="#332">332</a>         getWorkerInfoUnhealthyPath(getApplicationAttempt(), superstep);
-<a name="333" href="#333">333</a> 
-<a name="334" href="#334">334</a>     <strong class="jxr_keyword">try</strong> {
-<a name="335" href="#335">335</a>       getZkExt().createOnceExt(healthyWorkerInfoPath,
-<a name="336" href="#336">336</a>           <strong class="jxr_keyword">null</strong>,
-<a name="337" href="#337">337</a>           Ids.OPEN_ACL_UNSAFE,
-<a name="338" href="#338">338</a>           CreateMode.PERSISTENT,
-<a name="339" href="#339">339</a>           <strong class="jxr_keyword">true</strong>);
-<a name="340" href="#340">340</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a name="341" href="#341">341</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: KeeperException"</span>, e);
-<a name="342" href="#342">342</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a name="343" href="#343">343</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: IllegalStateException"</span>
-<a name="344" href="#344">344</a>           , e);
-<a name="345" href="#345">345</a>     }
-<a name="346" href="#346">346</a> 
-<a name="347" href="#347">347</a>     <strong class="jxr_keyword">try</strong> {
-<a name="348" href="#348">348</a>       getZkExt().createOnceExt(unhealthyWorkerInfoPath,
-<a name="349" href="#349">349</a>           <strong class="jxr_keyword">null</strong>,
-<a name="350" href="#350">350</a>           Ids.OPEN_ACL_UNSAFE,
-<a name="351" href="#351">351</a>           CreateMode.PERSISTENT,
-<a name="352" href="#352">352</a>           <strong class="jxr_keyword">true</strong>);
-<a name="353" href="#353">353</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
-<a name="354" href="#354">354</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: KeeperException"</span>, e);
-<a name="355" href="#355">355</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a name="356" href="#356">356</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: IllegalStateException"</span>
-<a name="357" href="#357">357</a>           , e);
-<a name="358" href="#358">358</a>     }
-<a name="359" href="#359">359</a> 
-<a name="360" href="#360">360</a>     List&lt;WorkerInfo&gt; currentHealthyWorkerInfoList =
-<a name="361" href="#361">361</a>         getWorkerInfosFromPath(healthyWorkerInfoPath, <strong class="jxr_keyword">true</strong>);
-<a name="362" href="#362">362</a>     List&lt;WorkerInfo&gt; currentUnhealthyWorkerInfoList =
-<a name="363" href="#363">363</a>         getWorkerInfosFromPath(unhealthyWorkerInfoPath, false);
+<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> com.google.common.collect.Sets;
+<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.ApplicationState;
+<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.BspInputFormat;
+<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.CentralizedServiceMaster;
+<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.bsp.SuperstepState;
+<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.GraphMapper.MapFunctions;
+<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.MasterGraphPartitioner;
+<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.PartitionOwner;
+<a name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.PartitionStats;
+<a name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.graph.partition.PartitionUtils;
+<a name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.utils.WritableUtils;
+<a name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.zk.BspEvent;
+<a name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.apache.giraph.zk.PredicateLock;
+<a name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FSDataOutputStream;
+<a name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FileStatus;
+<a name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.FileSystem;
+<a name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.Path;
+<a name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.fs.PathFilter;
+<a name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.Text;
+<a name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.Writable;
+<a name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.WritableComparable;
+<a name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapred.RunningJob;
+<a name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.Counter;
+<a name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.InputSplit;
+<a name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.mapreduce.Mapper;
+<a name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
+<a name="47" href="#47">47</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.CreateMode;
+<a name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.KeeperException;
+<a name="49" href="#49">49</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.WatchedEvent;
+<a name="50" href="#50">50</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.Watcher.Event.EventType;
+<a name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.ZooDefs.Ids;
+<a name="52" href="#52">52</a>  <strong class="jxr_keyword">import</strong> org.json.JSONException;
+<a name="53" href="#53">53</a>  <strong class="jxr_keyword">import</strong> org.json.JSONObject;
+<a name="54" href="#54">54</a>  
+<a name="55" href="#55">55</a>  <strong class="jxr_keyword">import</strong> net.iharder.Base64;
+<a name="56" href="#56">56</a>  
+<a name="57" href="#57">57</a>  <strong class="jxr_keyword">import</strong> java.io.ByteArrayInputStream;
+<a name="58" href="#58">58</a>  <strong class="jxr_keyword">import</strong> java.io.ByteArrayOutputStream;
+<a name="59" href="#59">59</a>  <strong class="jxr_keyword">import</strong> java.io.DataInputStream;
+<a name="60" href="#60">60</a>  <strong class="jxr_keyword">import</strong> java.io.DataOutput;
+<a name="61" href="#61">61</a>  <strong class="jxr_keyword">import</strong> java.io.DataOutputStream;
+<a name="62" href="#62">62</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
+<a name="63" href="#63">63</a>  <strong class="jxr_keyword">import</strong> java.util.AbstractMap;
+<a name="64" href="#64">64</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
+<a name="65" href="#65">65</a>  <strong class="jxr_keyword">import</strong> java.util.Arrays;
+<a name="66" href="#66">66</a>  <strong class="jxr_keyword">import</strong> java.util.Collection;
+<a name="67" href="#67">67</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
+<a name="68" href="#68">68</a>  <strong class="jxr_keyword">import</strong> java.util.HashSet;
+<a name="69" href="#69">69</a>  <strong class="jxr_keyword">import</strong> java.util.List;
+<a name="70" href="#70">70</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
+<a name="71" href="#71">71</a>  <strong class="jxr_keyword">import</strong> java.util.Map.Entry;
+<a name="72" href="#72">72</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
+<a name="73" href="#73">73</a>  <strong class="jxr_keyword">import</strong> java.util.TreeSet;
+<a name="74" href="#74">74</a>  
+<a name="75" href="#75">75</a>  <strong class="jxr_keyword">import</strong> com.google.common.base.Function;
+<a name="76" href="#76">76</a>  <strong class="jxr_keyword">import</strong> com.google.common.collect.Iterables;
+<a name="77" href="#77">77</a>  
+<a name="78" href="#78">78</a>  <em class="jxr_javadoccomment">/**</em>
+<a name="79" href="#79">79</a>  <em class="jxr_javadoccomment"> * ZooKeeper-based implementation of {@link CentralizedServiceMaster}.</em>
+<a name="80" href="#80">80</a>  <em class="jxr_javadoccomment"> *</em>
+<a name="81" href="#81">81</a>  <em class="jxr_javadoccomment"> * @param &lt;I&gt; Vertex id</em>
+<a name="82" href="#82">82</a>  <em class="jxr_javadoccomment"> * @param &lt;V&gt; Vertex data</em>
+<a name="83" href="#83">83</a>  <em class="jxr_javadoccomment"> * @param &lt;E&gt; Edge data</em>
+<a name="84" href="#84">84</a>  <em class="jxr_javadoccomment"> * @param &lt;M&gt; Message data</em>
+<a name="85" href="#85">85</a>  <em class="jxr_javadoccomment"> */</em>
+<a name="86" href="#86">86</a>  @SuppressWarnings(<span class="jxr_string">"rawtypes"</span>)
+<a name="87" href="#87">87</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> BspServiceMaster&lt;I <strong class="jxr_keyword">extends</strong> WritableComparable,
+<a name="88" href="#88">88</a>      V <strong class="jxr_keyword">extends</strong> Writable, E <strong class="jxr_keyword">extends</strong> Writable, M <strong class="jxr_keyword">extends</strong> Writable&gt;
+<a name="89" href="#89">89</a>      <strong class="jxr_keyword">extends</strong> BspService&lt;I, V, E, M&gt;
+<a name="90" href="#90">90</a>      implements CentralizedServiceMaster&lt;I, V, E, M&gt; {
+<a name="91" href="#91">91</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Counter group name for the Giraph statistics */</em>
+<a name="92" href="#92">92</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String GIRAPH_STATS_COUNTER_GROUP_NAME = <span class="jxr_string">"Giraph Stats"</span>;
+<a name="93" href="#93">93</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Print worker names only if there are 10 workers left */</em>
+<a name="94" href="#94">94</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_PRINTABLE_REMAINING_WORKERS = 10;
+<a name="95" href="#95">95</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Class logger */</em>
+<a name="96" href="#96">96</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger LOG = Logger.getLogger(BspServiceMaster.<strong class="jxr_keyword">class</strong>);
+<a name="97" href="#97">97</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Superstep counter */</em>
+<a name="98" href="#98">98</a>    <strong class="jxr_keyword">private</strong> Counter superstepCounter = <strong class="jxr_keyword">null</strong>;
+<a name="99" href="#99">99</a>    <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/graph/Vertex.html">Vertex</a> counter */</em>
+<a name="100" href="#100">100</a>   <strong class="jxr_keyword">private</strong> Counter vertexCounter = <strong class="jxr_keyword">null</strong>;
+<a name="101" href="#101">101</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Finished vertex counter */</em>
+<a name="102" href="#102">102</a>   <strong class="jxr_keyword">private</strong> Counter finishedVertexCounter = <strong class="jxr_keyword">null</strong>;
+<a name="103" href="#103">103</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/graph/Edge.html">Edge</a> counter */</em>
+<a name="104" href="#104">104</a>   <strong class="jxr_keyword">private</strong> Counter edgeCounter = <strong class="jxr_keyword">null</strong>;
+<a name="105" href="#105">105</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Sent messages counter */</em>
+<a name="106" href="#106">106</a>   <strong class="jxr_keyword">private</strong> Counter sentMessagesCounter = <strong class="jxr_keyword">null</strong>;
+<a name="107" href="#107">107</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Workers on this superstep */</em>
+<a name="108" href="#108">108</a>   <strong class="jxr_keyword">private</strong> Counter currentWorkersCounter = <strong class="jxr_keyword">null</strong>;
+<a name="109" href="#109">109</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Current master task partition */</em>
+<a name="110" href="#110">110</a>   <strong class="jxr_keyword">private</strong> Counter currentMasterTaskPartitionCounter = <strong class="jxr_keyword">null</strong>;
+<a name="111" href="#111">111</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Last checkpointed superstep */</em>
+<a name="112" href="#112">112</a>   <strong class="jxr_keyword">private</strong> Counter lastCheckpointedSuperstepCounter = <strong class="jxr_keyword">null</strong>;
+<a name="113" href="#113">113</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Am I the master? */</em>
+<a name="114" href="#114">114</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> isMaster = false;
+<a name="115" href="#115">115</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Max number of workers */</em>
+<a name="116" href="#116">116</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxWorkers;
+<a name="117" href="#117">117</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Min number of workers */</em>
+<a name="118" href="#118">118</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> minWorkers;
+<a name="119" href="#119">119</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Min % responded workers */</em>
+<a name="120" href="#120">120</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">float</strong> minPercentResponded;
+<a name="121" href="#121">121</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Poll period in msecs */</em>
+<a name="122" href="#122">122</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> msecsPollPeriod;
+<a name="123" href="#123">123</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Max number of poll attempts */</em>
+<a name="124" href="#124">124</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> maxPollAttempts;
+<a name="125" href="#125">125</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Min number of long tails before printing */</em>
+<a name="126" href="#126">126</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> partitionLongTailMinPrint;
+<a name="127" href="#127">127</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Last finalized checkpoint */</em>
+<a name="128" href="#128">128</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> lastCheckpointedSuperstep = -1;
+<a name="129" href="#129">129</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Worker wrote checkpoint */</em>
+<a name="130" href="#130">130</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/giraph/zk/BspEvent.html">BspEvent</a> workerWroteCheckpoint;
+<a name="131" href="#131">131</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/zk/ZooKeeperManager.html">State</a> of the superstep changed */</em>
+<a name="132" href="#132">132</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/apache/giraph/zk/BspEvent.html">BspEvent</a> superstepStateChanged;
+<a name="133" href="#133">133</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Master graph partitioner */</em>
+<a name="134" href="#134">134</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> MasterGraphPartitioner&lt;I, V, E, M&gt; masterGraphPartitioner;
+<a name="135" href="#135">135</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> All the partition stats from the last superstep */</em>
+<a name="136" href="#136">136</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> List&lt;PartitionStats&gt; allPartitionStatsList =
+<a name="137" href="#137">137</a>       <strong class="jxr_keyword">new</strong> ArrayList&lt;PartitionStats&gt;();
+<a name="138" href="#138">138</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> <a href="../../../../org/apache/giraph/graph/Aggregator.html">Aggregator</a> writer */</em>
+<a name="139" href="#139">139</a>   <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/giraph/graph/AggregatorWriter.html">AggregatorWriter</a> aggregatorWriter;
+<a name="140" href="#140">140</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Master class */</em>
+<a name="141" href="#141">141</a>   <strong class="jxr_keyword">private</strong> <a href="../../../../org/apache/giraph/graph/MasterCompute.html">MasterCompute</a> masterCompute;
+<a name="142" href="#142">142</a>   <em class="jxr_javadoccomment">/**</em><em class="jxr_javadoccomment"> Limit locality information added to each InputSplit znode */</em>
+<a name="143" href="#143">143</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> localityLimit = 5;
+<a name="144" href="#144">144</a> 
+<a name="145" href="#145">145</a>   <em class="jxr_javadoccomment">/**</em>
+<a name="146" href="#146">146</a> <em class="jxr_javadoccomment">   * Constructor for setting up the master.</em>
+<a name="147" href="#147">147</a> <em class="jxr_javadoccomment">   *</em>
+<a name="148" href="#148">148</a> <em class="jxr_javadoccomment">   * @param serverPortList ZooKeeper server port list</em>
+<a name="149" href="#149">149</a> <em class="jxr_javadoccomment">   * @param sessionMsecTimeout Msecs to timeout connecting to ZooKeeper</em>
+<a name="150" href="#150">150</a> <em class="jxr_javadoccomment">   * @param context Mapper context</em>
+<a name="151" href="#151">151</a> <em class="jxr_javadoccomment">   * @param graphMapper Graph mapper</em>
+<a name="152" href="#152">152</a> <em class="jxr_javadoccomment">   */</em>
+<a name="153" href="#153">153</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/giraph/graph/BspServiceMaster.html">BspServiceMaster</a>(
+<a name="154" href="#154">154</a>       String serverPortList,
+<a name="155" href="#155">155</a>       <strong class="jxr_keyword">int</strong> sessionMsecTimeout,
+<a name="156" href="#156">156</a>       Mapper&lt;?, ?, ?, ?&gt;.Context context,
+<a name="157" href="#157">157</a>       GraphMapper&lt;I, V, E, M&gt; graphMapper) {
+<a name="158" href="#158">158</a>     <strong class="jxr_keyword">super</strong>(serverPortList, sessionMsecTimeout, context, graphMapper);
+<a name="159" href="#159">159</a>     workerWroteCheckpoint = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/zk/PredicateLock.html">PredicateLock</a>(context);
+<a name="160" href="#160">160</a>     registerBspEvent(workerWroteCheckpoint);
+<a name="161" href="#161">161</a>     superstepStateChanged = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/zk/PredicateLock.html">PredicateLock</a>(context);
+<a name="162" href="#162">162</a>     registerBspEvent(superstepStateChanged);
+<a name="163" href="#163">163</a> 
+<a name="164" href="#164">164</a>     maxWorkers =
+<a name="165" href="#165">165</a>         getConfiguration().getInt(GiraphJob.MAX_WORKERS, -1);
+<a name="166" href="#166">166</a>     minWorkers =
+<a name="167" href="#167">167</a>         getConfiguration().getInt(GiraphJob.MIN_WORKERS, -1);
+<a name="168" href="#168">168</a>     minPercentResponded =
+<a name="169" href="#169">169</a>         getConfiguration().getFloat(GiraphJob.MIN_PERCENT_RESPONDED,
+<a name="170" href="#170">170</a>             100.0f);
+<a name="171" href="#171">171</a>     msecsPollPeriod =
+<a name="172" href="#172">172</a>         getConfiguration().getInt(GiraphJob.POLL_MSECS,
+<a name="173" href="#173">173</a>             GiraphJob.POLL_MSECS_DEFAULT);
+<a name="174" href="#174">174</a>     maxPollAttempts =
+<a name="175" href="#175">175</a>         getConfiguration().getInt(GiraphJob.POLL_ATTEMPTS,
+<a name="176" href="#176">176</a>             GiraphJob.POLL_ATTEMPTS_DEFAULT);
+<a name="177" href="#177">177</a>     partitionLongTailMinPrint = getConfiguration().getInt(
+<a name="178" href="#178">178</a>         GiraphJob.PARTITION_LONG_TAIL_MIN_PRINT,
+<a name="179" href="#179">179</a>         GiraphJob.PARTITION_LONG_TAIL_MIN_PRINT_DEFAULT);
+<a name="180" href="#180">180</a>     masterGraphPartitioner =
+<a name="181" href="#181">181</a>         getGraphPartitionerFactory().createMasterGraphPartitioner();
+<a name="182" href="#182">182</a>   }
+<a name="183" href="#183">183</a> 
+<a name="184" href="#184">184</a>   @Override
+<a name="185" href="#185">185</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setJobState(<a href="../../../../org/apache/giraph/bsp/ApplicationState.html">ApplicationState</a> state,
+<a name="186" href="#186">186</a>       <strong class="jxr_keyword">long</strong> applicationAttempt,
+<a name="187" href="#187">187</a>       <strong class="jxr_keyword">long</strong> desiredSuperstep) {
+<a name="188" href="#188">188</a>     JSONObject jobState = <strong class="jxr_keyword">new</strong> JSONObject();
+<a name="189" href="#189">189</a>     <strong class="jxr_keyword">try</strong> {
+<a name="190" href="#190">190</a>       jobState.put(JSONOBJ_STATE_KEY, state.toString());
+<a name="191" href="#191">191</a>       jobState.put(JSONOBJ_APPLICATION_ATTEMPT_KEY, applicationAttempt);
+<a name="192" href="#192">192</a>       jobState.put(JSONOBJ_SUPERSTEP_KEY, desiredSuperstep);
+<a name="193" href="#193">193</a>     } <strong class="jxr_keyword">catch</strong> (JSONException e) {
+<a name="194" href="#194">194</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(<span class="jxr_string">"setJobState: Coudn't put "</span> +
+<a name="195" href="#195">195</a>           state.toString());
+<a name="196" href="#196">196</a>     }
+<a name="197" href="#197">197</a>     <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
+<a name="198" href="#198">198</a>       LOG.info(<span class="jxr_string">"setJobState: "</span> + jobState.toString() + <span class="jxr_string">" on superstep "</span> +
+<a name="199" href="#199">199</a>           getSuperstep());
+<a name="200" href="#200">200</a>     }
+<a name="201" href="#201">201</a>     <strong class="jxr_keyword">try</strong> {
+<a name="202" href="#202">202</a>       getZkExt().createExt(masterJobStatePath + <span class="jxr_string">"/jobState"</span>,
+<a name="203" href="#203">203</a>           jobState.toString().getBytes(),
+<a name="204" href="#204">204</a>           Ids.OPEN_ACL_UNSAFE,
+<a name="205" href="#205">205</a>           CreateMode.PERSISTENT_SEQUENTIAL,
+<a name="206" href="#206">206</a>           <strong class="jxr_keyword">true</strong>);
+<a name="207" href="#207">207</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException.NodeExistsException e) {
+<a name="208" href="#208">208</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="209" href="#209">209</a>           <span class="jxr_string">"setJobState: Imposible that "</span> +
+<a name="210" href="#210">210</a>               masterJobStatePath + <span class="jxr_string">" already exists!"</span>, e);
+<a name="211" href="#211">211</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
+<a name="212" href="#212">212</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="213" href="#213">213</a>           <span class="jxr_string">"setJobState: Unknown KeeperException for "</span> +
+<a name="214" href="#214">214</a>               masterJobStatePath, e);
+<a name="215" href="#215">215</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a name="216" href="#216">216</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="217" href="#217">217</a>           <span class="jxr_string">"setJobState: Unknown InterruptedException for "</span> +
+<a name="218" href="#218">218</a>               masterJobStatePath, e);
+<a name="219" href="#219">219</a>     }
+<a name="220" href="#220">220</a> 
+<a name="221" href="#221">221</a>     <strong class="jxr_keyword">if</strong> (state == ApplicationState.FAILED) {
+<a name="222" href="#222">222</a>       failJob();
+<a name="223" href="#223">223</a>     }
+<a name="224" href="#224">224</a>   }
+<a name="225" href="#225">225</a> 
+<a name="226" href="#226">226</a>   <em class="jxr_javadoccomment">/**</em>
+<a name="227" href="#227">227</a> <em class="jxr_javadoccomment">   * Master uses this to calculate the {@link VertexInputFormat}</em>
+<a name="228" href="#228">228</a> <em class="jxr_javadoccomment">   * input splits and write it to ZooKeeper.</em>
+<a name="229" href="#229">229</a> <em class="jxr_javadoccomment">   *</em>
+<a name="230" href="#230">230</a> <em class="jxr_javadoccomment">   * @param numWorkers Number of available workers</em>
+<a name="231" href="#231">231</a> <em class="jxr_javadoccomment">   * @return List of input splits</em>
+<a name="232" href="#232">232</a> <em class="jxr_javadoccomment">   * @throws InstantiationException</em>
+<a name="233" href="#233">233</a> <em class="jxr_javadoccomment">   * @throws IllegalAccessException</em>
+<a name="234" href="#234">234</a> <em class="jxr_javadoccomment">   * @throws IOException</em>
+<a name="235" href="#235">235</a> <em class="jxr_javadoccomment">   * @throws InterruptedException</em>
+<a name="236" href="#236">236</a> <em class="jxr_javadoccomment">   */</em>
+<a name="237" href="#237">237</a>   <strong class="jxr_keyword">private</strong> List&lt;InputSplit&gt; generateInputSplits(<strong class="jxr_keyword">int</strong> numWorkers) {
+<a name="238" href="#238">238</a>     VertexInputFormat&lt;I, V, E, M&gt; vertexInputFormat =
+<a name="239" href="#239">239</a>         BspUtils.&lt;I, V, E, M&gt;createVertexInputFormat(getConfiguration());
+<a name="240" href="#240">240</a>     List&lt;InputSplit&gt; splits;
+<a name="241" href="#241">241</a>     <strong class="jxr_keyword">try</strong> {
+<a name="242" href="#242">242</a>       splits = vertexInputFormat.getSplits(getContext(), numWorkers);
+<a name="243" href="#243">243</a>       <strong class="jxr_keyword">float</strong> samplePercent =
+<a name="244" href="#244">244</a>           getConfiguration().getFloat(
+<a name="245" href="#245">245</a>               GiraphJob.INPUT_SPLIT_SAMPLE_PERCENT,
+<a name="246" href="#246">246</a>               GiraphJob.INPUT_SPLIT_SAMPLE_PERCENT_DEFAULT);
+<a name="247" href="#247">247</a>       <strong class="jxr_keyword">if</strong> (samplePercent != GiraphJob.INPUT_SPLIT_SAMPLE_PERCENT_DEFAULT) {
+<a name="248" href="#248">248</a>         <strong class="jxr_keyword">int</strong> lastIndex = (<strong class="jxr_keyword">int</strong>) (samplePercent * splits.size() / 100f);
+<a name="249" href="#249">249</a>         List&lt;InputSplit&gt; sampleSplits = splits.subList(0, lastIndex);
+<a name="250" href="#250">250</a>         LOG.warn(<span class="jxr_string">"generateInputSplits: Using sampling - Processing "</span> +
+<a name="251" href="#251">251</a>             <span class="jxr_string">"only "</span> + sampleSplits.size() + <span class="jxr_string">" instead of "</span> +
+<a name="252" href="#252">252</a>             splits.size() + <span class="jxr_string">" expected splits."</span>);
+<a name="253" href="#253">253</a>         <strong class="jxr_keyword">return</strong> sampleSplits;
+<a name="254" href="#254">254</a>       } <strong class="jxr_keyword">else</strong> {
+<a name="255" href="#255">255</a>         <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
+<a name="256" href="#256">256</a>           LOG.info(<span class="jxr_string">"generateInputSplits: Got "</span> + splits.size() +
+<a name="257" href="#257">257</a>               <span class="jxr_string">" input splits for "</span> + numWorkers + <span class="jxr_string">" workers"</span>);
+<a name="258" href="#258">258</a>         }
+<a name="259" href="#259">259</a>         <strong class="jxr_keyword">return</strong> splits;
+<a name="260" href="#260">260</a>       }
+<a name="261" href="#261">261</a>     } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a name="262" href="#262">262</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="263" href="#263">263</a>           <span class="jxr_string">"generateInputSplits: Got IOException"</span>, e);
+<a name="264" href="#264">264</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a name="265" href="#265">265</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="266" href="#266">266</a>           <span class="jxr_string">"generateInputSplits: Got InterruptedException"</span>, e);
+<a name="267" href="#267">267</a>     }
+<a name="268" href="#268">268</a>   }
+<a name="269" href="#269">269</a> 
+<a name="270" href="#270">270</a>   <em class="jxr_javadoccomment">/**</em>
+<a name="271" href="#271">271</a> <em class="jxr_javadoccomment">   * When there is no salvaging this job, fail it.</em>
+<a name="272" href="#272">272</a> <em class="jxr_javadoccomment">   *</em>
+<a name="273" href="#273">273</a> <em class="jxr_javadoccomment">   * @throws IOException</em>
+<a name="274" href="#274">274</a> <em class="jxr_javadoccomment">   */</em>
+<a name="275" href="#275">275</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> failJob() {
+<a name="276" href="#276">276</a>     LOG.fatal(<span class="jxr_string">"failJob: Killing job "</span> + getJobId());
+<a name="277" href="#277">277</a>     <strong class="jxr_keyword">try</strong> {
+<a name="278" href="#278">278</a>       @SuppressWarnings(<span class="jxr_string">"deprecation"</span>)
+<a name="279" href="#279">279</a>       org.apache.hadoop.mapred.JobClient jobClient =
+<a name="280" href="#280">280</a>           <strong class="jxr_keyword">new</strong> org.apache.hadoop.mapred.JobClient(
+<a name="281" href="#281">281</a>               (org.apache.hadoop.mapred.JobConf)
+<a name="282" href="#282">282</a>               getConfiguration());
+<a name="283" href="#283">283</a>       @SuppressWarnings(<span class="jxr_string">"deprecation"</span>)
+<a name="284" href="#284">284</a>       org.apache.hadoop.mapred.JobID jobId =
+<a name="285" href="#285">285</a>           org.apache.hadoop.mapred.JobID.forName(getJobId());
+<a name="286" href="#286">286</a>       RunningJob job = jobClient.getJob(jobId);
+<a name="287" href="#287">287</a>       job.killJob();
+<a name="288" href="#288">288</a>     } <strong class="jxr_keyword">catch</strong> (IOException e) {
+<a name="289" href="#289">289</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(e);
+<a name="290" href="#290">290</a>     }
+<a name="291" href="#291">291</a>   }
+<a name="292" href="#292">292</a> 
+<a name="293" href="#293">293</a>   <em class="jxr_javadoccomment">/**</em>
+<a name="294" href="#294">294</a> <em class="jxr_javadoccomment">   * Parse the {@link WorkerInfo} objects from a ZooKeeper path</em>
+<a name="295" href="#295">295</a> <em class="jxr_javadoccomment">   * (and children).</em>
+<a name="296" href="#296">296</a> <em class="jxr_javadoccomment">   *</em>
+<a name="297" href="#297">297</a> <em class="jxr_javadoccomment">   * @param workerInfosPath Path where all the workers are children</em>
+<a name="298" href="#298">298</a> <em class="jxr_javadoccomment">   * @param watch Watch or not?</em>
+<a name="299" href="#299">299</a> <em class="jxr_javadoccomment">   * @return List of workers in that path</em>
+<a name="300" href="#300">300</a> <em class="jxr_javadoccomment">   */</em>
+<a name="301" href="#301">301</a>   <strong class="jxr_keyword">private</strong> List&lt;WorkerInfo&gt; getWorkerInfosFromPath(String workerInfosPath,
+<a name="302" href="#302">302</a>       <strong class="jxr_keyword">boolean</strong> watch) {
+<a name="303" href="#303">303</a>     List&lt;WorkerInfo&gt; workerInfoList = <strong class="jxr_keyword">new</strong> ArrayList&lt;WorkerInfo&gt;();
+<a name="304" href="#304">304</a>     List&lt;String&gt; workerInfoPathList;
+<a name="305" href="#305">305</a>     <strong class="jxr_keyword">try</strong> {
+<a name="306" href="#306">306</a>       workerInfoPathList =
+<a name="307" href="#307">307</a>           getZkExt().getChildrenExt(workerInfosPath, watch, false, <strong class="jxr_keyword">true</strong>);
+<a name="308" href="#308">308</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
+<a name="309" href="#309">309</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="310" href="#310">310</a>           <span class="jxr_string">"getWorkers: Got KeeperException"</span>, e);
+<a name="311" href="#311">311</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a name="312" href="#312">312</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(
+<a name="313" href="#313">313</a>           <span class="jxr_string">"getWorkers: Got InterruptedStateException"</span>, e);
+<a name="314" href="#314">314</a>     }
+<a name="315" href="#315">315</a>     <strong class="jxr_keyword">for</strong> (String workerInfoPath : workerInfoPathList) {
+<a name="316" href="#316">316</a>       <a href="../../../../org/apache/giraph/graph/WorkerInfo.html">WorkerInfo</a> workerInfo = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/giraph/graph/WorkerInfo.html">WorkerInfo</a>();
+<a name="317" href="#317">317</a>       WritableUtils.readFieldsFromZnode(
+<a name="318" href="#318">318</a>           getZkExt(), workerInfoPath, <strong class="jxr_keyword">true</strong>, <strong class="jxr_keyword">null</strong>, workerInfo);
+<a name="319" href="#319">319</a>       workerInfoList.add(workerInfo);
+<a name="320" href="#320">320</a>     }
+<a name="321" href="#321">321</a>     <strong class="jxr_keyword">return</strong> workerInfoList;
+<a name="322" href="#322">322</a>   }
+<a name="323" href="#323">323</a> 
+<a name="324" href="#324">324</a>   <em class="jxr_javadoccomment">/**</em>
+<a name="325" href="#325">325</a> <em class="jxr_javadoccomment">   * Get the healthy and unhealthy {@link WorkerInfo} objects for</em>
+<a name="326" href="#326">326</a> <em class="jxr_javadoccomment">   * a superstep</em>
+<a name="327" href="#327">327</a> <em class="jxr_javadoccomment">   *</em>
+<a name="328" href="#328">328</a> <em class="jxr_javadoccomment">   * @param superstep superstep to check</em>
+<a name="329" href="#329">329</a> <em class="jxr_javadoccomment">   * @param healthyWorkerInfoList filled in with current data</em>
+<a name="330" href="#330">330</a> <em class="jxr_javadoccomment">   * @param unhealthyWorkerInfoList filled in with current data</em>
+<a name="331" href="#331">331</a> <em class="jxr_javadoccomment">   */</em>
+<a name="332" href="#332">332</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> getAllWorkerInfos(
+<a name="333" href="#333">333</a>       <strong class="jxr_keyword">long</strong> superstep,
+<a name="334" href="#334">334</a>       List&lt;WorkerInfo&gt; healthyWorkerInfoList,
+<a name="335" href="#335">335</a>       List&lt;WorkerInfo&gt; unhealthyWorkerInfoList) {
+<a name="336" href="#336">336</a>     String healthyWorkerInfoPath =
+<a name="337" href="#337">337</a>         getWorkerInfoHealthyPath(getApplicationAttempt(), superstep);
+<a name="338" href="#338">338</a>     String unhealthyWorkerInfoPath =
+<a name="339" href="#339">339</a>         getWorkerInfoUnhealthyPath(getApplicationAttempt(), superstep);
+<a name="340" href="#340">340</a> 
+<a name="341" href="#341">341</a>     <strong class="jxr_keyword">try</strong> {
+<a name="342" href="#342">342</a>       getZkExt().createOnceExt(healthyWorkerInfoPath,
+<a name="343" href="#343">343</a>           <strong class="jxr_keyword">null</strong>,
+<a name="344" href="#344">344</a>           Ids.OPEN_ACL_UNSAFE,
+<a name="345" href="#345">345</a>           CreateMode.PERSISTENT,
+<a name="346" href="#346">346</a>           <strong class="jxr_keyword">true</strong>);
+<a name="347" href="#347">347</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
+<a name="348" href="#348">348</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: KeeperException"</span>, e);
+<a name="349" href="#349">349</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a name="350" href="#350">350</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: IllegalStateException"</span>, e);
+<a name="351" href="#351">351</a>     }
+<a name="352" href="#352">352</a> 
+<a name="353" href="#353">353</a>     <strong class="jxr_keyword">try</strong> {
+<a name="354" href="#354">354</a>       getZkExt().createOnceExt(unhealthyWorkerInfoPath,
+<a name="355" href="#355">355</a>           <strong class="jxr_keyword">null</strong>,
+<a name="356" href="#356">356</a>           Ids.OPEN_ACL_UNSAFE,
+<a name="357" href="#357">357</a>           CreateMode.PERSISTENT,
+<a name="358" href="#358">358</a>           <strong class="jxr_keyword">true</strong>);
+<a name="359" href="#359">359</a>     } <strong class="jxr_keyword">catch</strong> (KeeperException e) {
+<a name="360" href="#360">360</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: KeeperException"</span>, e);
+<a name="361" href="#361">361</a>     } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a name="362" href="#362">362</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"getWorkers: IllegalStateException"</span>, e);
+<a name="363" href="#363">363</a>     }
 <a name="364" href="#364">364</a> 
-<a name="365" href="#365">365</a>     healthyWorkerInfoList.clear();
-<a name="366" href="#366">366</a>     <strong class="jxr_keyword">if</strong> (currentHealthyWorkerInfoList != <strong class="jxr_keyword">null</strong>) {
-<a name="367" href="#367">367</a>       <strong class="jxr_keyword">for</strong> (WorkerInfo healthyWorkerInfo :
-<a name="368" href="#368">368</a>         currentHealthyWorkerInfoList) {
-<a name="369" href="#369">369</a>         healthyWorkerInfoList.add(healthyWorkerInfo);
-<a name="370" href="#370">370</a>       }
-<a name="371" href="#371">371</a>     }
-<a name="372" href="#372">372</a> 
-<a name="373" href="#373">373</a>     unhealthyWorkerInfoList.clear();
-<a name="374" href="#374">374</a>     <strong class="jxr_keyword">if</strong> (currentUnhealthyWorkerInfoList != <strong class="jxr_keyword">null</strong>) {
-<a name="375" href="#375">375</a>       <strong class="jxr_keyword">for</strong> (WorkerInfo unhealthyWorkerInfo :
-<a name="376" href="#376">376</a>         currentUnhealthyWorkerInfoList) {
-<a name="377" href="#377">377</a>         unhealthyWorkerInfoList.add(unhealthyWorkerInfo);
-<a name="378" href="#378">378</a>       }
-<a name="379" href="#379">379</a>     }
-<a name="380" href="#380">380</a>   }
-<a name="381" href="#381">381</a> 
-<a name="382" href="#382">382</a>   <em class="jxr_javadoccomment">/**</em>
-<a name="383" href="#383">383</a> <em class="jxr_javadoccomment">   * Check all the {@link WorkerInfo} objects to ensure that a minimum</em>
-<a name="384" href="#384">384</a> <em class="jxr_javadoccomment">   * number of good workers exists out of the total that have reported.</em>
-<a name="385" href="#385">385</a> <em class="jxr_javadoccomment">   *</em>
-<a name="386" href="#386">386</a> <em class="jxr_javadoccomment">   * @return List of of healthy workers such that the minimum has been</em>
-<a name="387" href="#387">387</a> <em class="jxr_javadoccomment">   *         met, otherwise null</em>
-<a name="388" href="#388">388</a> <em class="jxr_javadoccomment">   */</em>
-<a name="389" href="#389">389</a>   <strong class="jxr_keyword">private</strong> List&lt;WorkerInfo&gt; checkWorkers() {
-<a name="390" href="#390">390</a>     <strong class="jxr_keyword">boolean</strong> failJob = <strong class="jxr_keyword">true</strong>;
-<a name="391" href="#391">391</a>     <strong class="jxr_keyword">int</strong> pollAttempt = 0;
-<a name="392" href="#392">392</a>     List&lt;WorkerInfo&gt; healthyWorkerInfoList = <strong class="jxr_keyword">new</strong> ArrayList&lt;WorkerInfo&gt;();
-<a name="393" href="#393">393</a>     List&lt;WorkerInfo&gt; unhealthyWorkerInfoList = <strong class="jxr_keyword">new</strong> ArrayList&lt;WorkerInfo&gt;();
-<a name="394" href="#394">394</a>     <strong class="jxr_keyword">int</strong> totalResponses = -1;
-<a name="395" href="#395">395</a>     <strong class="jxr_keyword">while</strong> (pollAttempt &lt; maxPollAttempts) {
-<a name="396" href="#396">396</a>       getAllWorkerInfos(
-<a name="397" href="#397">397</a>           getSuperstep(), healthyWorkerInfoList, unhealthyWorkerInfoList);
-<a name="398" href="#398">398</a>       totalResponses = healthyWorkerInfoList.size() +
-<a name="399" href="#399">399</a>           unhealthyWorkerInfoList.size();
-<a name="400" href="#400">400</a>       <strong class="jxr_keyword">if</strong> ((totalResponses * 100.0f / maxWorkers) &gt;=
-<a name="401" href="#401">401</a>           minPercentResponded) {
-<a name="402" href="#402">402</a>         failJob = false;
-<a name="403" href="#403">403</a>         <strong class="jxr_keyword">break</strong>;
-<a name="404" href="#404">404</a>       }
-<a name="405" href="#405">405</a>       getContext().setStatus(getGraphMapper().getMapFunctions() + <span class="jxr_string">" "</span> +
-<a name="406" href="#406">406</a>           <span class="jxr_string">"checkWorkers: Only found "</span> +
-<a name="407" href="#407">407</a>           totalResponses +
-<a name="408" href="#408">408</a>           <span class="jxr_string">" responses of "</span> + maxWorkers +
-<a name="409" href="#409">409</a>           <span class="jxr_string">" needed to start superstep "</span> +
-<a name="410" href="#410">410</a>           getSuperstep());
-<a name="411" href="#411">411</a>       <strong class="jxr_keyword">if</strong> (getWorkerHealthRegistrationChangedEvent().waitMsecs(
-<a name="412" href="#412">412</a>           msecsPollPeriod)) {
-<a name="413" href="#413">413</a>         <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled()) {
-<a name="414" href="#414">414</a>           LOG.debug(<span class="jxr_string">"checkWorkers: Got event that health "</span> +
-<a name="415" href="#415">415</a>               <span class="jxr_string">"registration changed, not using poll attempt"</span>);
-<a name="416" href="#416">416</a>         }
-<a name="417" href="#417">417</a>         getWorkerHealthRegistrationChangedEvent().reset();
-<a name="418" href="#418">418</a>         <strong class="jxr_keyword">continue</strong>;
-<a name="419" href="#419">419</a>       }
-<a name="420" href="#420">420</a>       <strong class="jxr_keyword">if</strong> (LOG.isInfoEnabled()) {
-<a name="421" href="#421">421</a>         LOG.info(<span class="jxr_string">"checkWorkers: Only found "</span> + totalResponses +
-<a name="422" href="#422">422</a>             <span class="jxr_string">" responses of "</span> + maxWorkers +
-<a name="423" href="#423">423</a>             <span class="jxr_string">" needed to start superstep "</span> +
-<a name="424" href="#424">424</a>             getSuperstep() + <span class="jxr_string">".  Sleeping for "</span> +
-<a name="425" href="#425">425</a>             msecsPollPeriod + <span class="jxr_string">" msecs and used "</span> + pollAttempt +
-<a name="426" href="#426">426</a>             <span class="jxr_string">" of "</span> + maxPollAttempts + <span class="jxr_string">" attempts."</span>);
-<a name="427" href="#427">427</a>         <em class="jxr_comment">// Find the missing workers if there are only a few</em>
-<a name="428" href="#428">428</a>         <strong class="jxr_keyword">if</strong> ((maxWorkers - totalResponses) &lt;=
-<a name="429" href="#429">429</a>             partitionLongTailMinPrint) {
-<a name="430" href="#430">430</a>           Set&lt;Integer&gt; partitionSet = <strong class="jxr_keyword">new</strong> TreeSet&lt;Integer&gt;();
-<a name="431" href="#431">431</a>           <strong class="jxr_keyword">for</strong> (WorkerInfo workerInfo : healthyWorkerInfoList) {
-<a name="432" href="#432">432</a>             partitionSet.add(workerInfo.getPartitionId());
-<a name="433" href="#433">433</a>           }
-<a name="434" href="#434">434</a>           <strong class="jxr_keyword">for</strong> (WorkerInfo workerInfo : unhealthyWorkerInfoList) {
-<a name="435" href="#435">435</a>             partitionSet.add(workerInfo.getPartitionId());
-<a name="436" href="#436">436</a>           }
-<a name="437" href="#437">437</a>           <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 1; i &lt;= maxWorkers; ++i) {
-<a name="438" href="#438">438</a>             <strong class="jxr_keyword">if</strong> (partitionSet.contains(Integer.valueOf(i))) {
-<a name="439" href="#439">439</a>               <strong class="jxr_keyword">continue</strong>;
-<a name="440" href="#440">440</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (i == getTaskPartition()) {
-<a name="441" href="#441">441</a>               <strong class="jxr_keyword">continue</strong>;
-<a name="442" href="#442">442</a>             } <strong class="jxr_keyword">else</strong> {
-<a name="443" href="#443">443</a>               LOG.info(<span class="jxr_string">"checkWorkers: No response from "</span> +
-<a name="444" href="#444">444</a>                   <span class="jxr_string">"partition "</span> + i + <span class="jxr_string">" (could be master)"</span>);
-<a name="445" href="#445">445</a>             }
-<a name="446" href="#446">446</a>           }
-<a name="447" href="#447">447</a>         }
-<a name="448" href="#448">448</a>       }
-<a name="449" href="#449">449</a>       ++pollAttempt;
-<a name="450" href="#450">450</a>     }
-<a name="451" href="#451">451</a>     <strong class="jxr_keyword">if</strong> (failJob) {
-<a name="452" href="#452">452</a>       LOG.error(<span class="jxr_string">"checkWorkers: Did not receive enough processes in "</span> +
-<a name="453" href="#453">453</a>           <span class="jxr_string">"time (only "</span> + totalResponses + <span class="jxr_string">" of "</span> +
-<a name="454" href="#454">454</a>           minWorkers + <span class="jxr_string">" required).  This occurs if you do not "</span> +
-<a name="455" href="#455">455</a>           <span class="jxr_string">"have enough map tasks available simultaneously on "</span> +
-<a name="456" href="#456">456</a>           <span class="jxr_string">"your Hadoop instance to fulfill the number of "</span> +
-<a name="457" href="#457">457</a>           <span class="jxr_string">"requested workers."</span>);
-<a name="458" href="#458">458</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
-<a name="459" href="#459">459</a>     }
-<a name="460" href="#460">460</a> 
-<a name="461" href="#461">461</a>     <strong class="jxr_keyword">if</strong> (healthyWorkerInfoList.size() &lt; minWorkers) {
-<a name="462" href="#462">462</a>       LOG.error(<span class="jxr_string">"checkWorkers: Only "</span> + healthyWorkerInfoList.size() +
-<a name="463" href="#463">463</a>           <span class="jxr_string">" available when "</span> + minWorkers + <span class="jxr_string">" are required."</span>);
-<a name="464" href="#464">464</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
-<a name="465" href="#465">465</a>     }
-<a name="466" href="#466">466</a> 
-<a name="467" href="#467">467</a>     getContext().setStatus(getGraphMapper().getMapFunctions() + <span class="jxr_string">" "</span> +
-<a name="468" href="#468">468</a>         <span class="jxr_string">"checkWorkers: Done - Found "</span> + totalResponses +
-<a name="469" href="#469">469</a>         <span class="jxr_string">" responses of "</span> + maxWorkers + <span class="jxr_string">" needed to start superstep "</span> +
-<a name="470" href="#470">470</a>         getSuperstep());
+<a name="365" href="#365">365</a>     List&lt;WorkerInfo&gt; currentHealthyWorkerInfoList =
+<a name="366" href="#366">366</a>         getWorkerInfosFromPath(healthyWorkerInfoPath, <strong class="jxr_keyword">true</strong>);
+<a name="367" href="#367">367</a>     List&lt;WorkerInfo&gt; currentUnhealthyWorkerInfoList =
+<a name="368" href="#368">368</a>         getWorkerInfosFromPath(unhealthyWorkerInfoPath, false);
+<a name="369" href="#369">369</a> 
+<a name="370" href="#370">370</a>     healthyWorkerInfoList.clear();
+<a name="371" href="#371">371</a>     <strong class="jxr_keyword">if</strong> (currentHealthyWorkerInfoList != <strong class="jxr_keyword">null</strong>) {
+<a name="372" href="#372">372</a>       <strong class="jxr_keyword">for</strong> (WorkerInfo healthyWorkerInfo :
+<a name="373" href="#373">373</a>         currentHealthyWorkerInfoList) {
+<a name="374" href="#374">374</a>         healthyWorkerInfoList.add(healthyWorkerInfo);
+<a name="375" href="#375">375</a>       }
+<a name="376" href="#376">376</a>     }
+<a name="377" href="#377">377</a> 
+<a name="378" href="#378">378</a>     unhealthyWorkerInfoList.clear();
+<a name="379" href="#379">379</a>     <strong class="jxr_keyword">if</strong> (currentUnhealthyWorkerInfoList != <strong class="jxr_keyword">null</strong>) {
+<a name="380" href="#380">380</a>       <strong class="jxr_keyword">for</strong> (WorkerInfo unhealthyWorkerInfo :
+<a name="381" href="#381">381</a>         currentUnhealthyWorkerInfoList) {
+<a name="382" href="#382">382</a>         unhealthyWorkerInfoList.add(unhealthyWorkerInfo);
+<a name="383" href="#383">383</a>       }
+<a name="384" href="#384">384</a>     }
+<a name="385" href="#385">385</a>   }
+<a name="386" href="#386">386</a> 
+<a name="387" href="#387">387</a>   <em class="jxr_javadoccomment">/**</em>
+<a name="388" href="#388">388</a> <em class="jxr_javadoccomment">   * Check all the {@link WorkerInfo} objects to ensure that a minimum</em>
+<a name="389" href="#389">389</a> <em class="jxr_javadoccomment">   * number of good workers exists out of the total that have reported.</em>
+<a name="390" href="#390">390</a> <em class="jxr_javadoccomment">   *</em>
+<a name="391" href="#391">391</a> <em class="jxr_javadoccomment">   * @return List of of healthy workers such that the minimum has been</em>
+<a name="392" href="#392">392</a> <em class="jxr_javadoccomment">   *         met, otherwise null</em>
+<a name="393" href="#393">393</a> <em class="jxr_javadoccomment">   */</em>
+<a name="394" href="#394">394</a>   <strong class="jxr_keyword">private</strong> List&lt;WorkerInfo&gt; checkWorkers() {
+<a name="395" href="#395">395</a>     <strong class="jxr_keyword">boolean</strong> failJob = <strong class="jxr_keyword">true</strong>;
+<a name="396" href="#396">396</a>     <strong class="jxr_keyword">int</strong> pollAttempt = 0;
+<a name="397" href="#397">397</a>     List&lt;WorkerInfo&gt; healthyWorkerInfoList = <strong class="jxr_keyword">new</strong> ArrayList&lt;WorkerInfo&gt;();
+<a name="398" href="#398">398</a>     List&lt;WorkerInfo&gt; unhealthyWorkerInfoList = <strong class="jxr_keyword">new</strong> ArrayList&lt;WorkerInfo&gt;();
+<a name="399" href="#399">399</a>     <strong class="jxr_keyword">int</strong> totalResponses = -1;
+<a name="400" href="#400">400</a>     <strong class="jxr_keyword">while</strong> (pollAttempt &lt; maxPollAttempts) {
+<a name="401" href="#401">401</a>       getAllWorkerInfos(
+<a name="402" href="#402">402</a>           getSuperstep(), healthyWorkerInfoList, unhealthyWorkerInfoList);
+<a name="403" href="#403">403</a>       totalResponses = healthyWorkerInfoList.size() +

[... 2801 lines stripped ...]


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