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From ol...@apache.org
Subject svn commit: r1412308 [41/42] - in /incubator/helix/site-content: ./ apidocs/assets/ apidocs/reference/ apidocs/reference/org/apache/helix/ apidocs/reference/org/apache/helix/alerts/ apidocs/reference/org/apache/helix/controller/ apidocs/reference/org/a...
Date Wed, 21 Nov 2012 21:30:26 GMT
Modified: incubator/helix/site-content/xref/org/apache/helix/tools/RUSHrHash.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/tools/RUSHrHash.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/tools/RUSHrHash.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/tools/RUSHrHash.html Wed Nov 21 21:29:07 2012
@@ -30,340 +30,339 @@
 <a class="jxr_linenumber" name="20" href="#20">20</a>  <em class="jxr_comment"> */</em>
 <a class="jxr_linenumber" name="21" href="#21">21</a>  
 <a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.util.*;
-<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
-<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.zip.CRC32;
-<a class="jxr_linenumber" name="25" href="#25">25</a>  
-<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/helix/tools/RUSHrHash.html">RUSHrHash</a>
-<a class="jxr_linenumber" name="27" href="#27">27</a>  {
-<a class="jxr_linenumber" name="28" href="#28">28</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_javadoccomment">   * @var int holds the value for how many replicas to create for an object</em>
-<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="31" href="#31">31</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> replicationDegree = 1;
-<a class="jxr_linenumber" name="32" href="#32">32</a>  
-<a class="jxr_linenumber" name="33" href="#33">33</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment">   * an array of hash maps where each hash map holds info on the sub cluster</em>
-<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment">   * that corresponds to the array indices meaning that array element 0 holds</em>
-<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment">   * data for server 0</em>
-<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment">   * that is the total number of nodes in the cluster this property is populated</em>
-<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment">   * at construction time only</em>
-<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment">   * @var</em>
-<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="43" href="#43">43</a>  
-<a class="jxr_linenumber" name="44" href="#44">44</a>    <strong class="jxr_keyword">protected</strong> HashMap[] clusters;
-<a class="jxr_linenumber" name="45" href="#45">45</a>  
-<a class="jxr_linenumber" name="46" href="#46">46</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment">   * an array of hash maps where each element holds data for a sub cluster</em>
-<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="49" href="#49">49</a>    <strong class="jxr_keyword">protected</strong> HashMap[] clusterConfig;
-<a class="jxr_linenumber" name="50" href="#50">50</a>  
-<a class="jxr_linenumber" name="51" href="#51">51</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment">   * total number of sub-clusters in our data configuration this property is</em>
-<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment">   * populated at construction time only</em>
-<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment">   * @var integer</em>
-<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="57" href="#57">57</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> totalClusters = 0;
-<a class="jxr_linenumber" name="58" href="#58">58</a>  
-<a class="jxr_linenumber" name="59" href="#59">59</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">   * the total number of nodes in all of the subClusters this property is</em>
-<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment">   * populated at construction time only</em>
-<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">   * @var integer</em>
-<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="65" href="#65">65</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> totalNodes = 0;
-<a class="jxr_linenumber" name="66" href="#66">66</a>  
-<a class="jxr_linenumber" name="67" href="#67">67</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">   * the total number of nodes in all of the clusters this property is populated</em>
-<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">   * at construction time only</em>
-<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">   * @var integer</em>
-<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="73" href="#73">73</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> totalNodesW = 0;
-<a class="jxr_linenumber" name="74" href="#74">74</a>  
-<a class="jxr_linenumber" name="75" href="#75">75</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">   * an array of HashMaps where each HashMap holds the data for a single node</em>
-<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="78" href="#78">78</a>    <strong class="jxr_keyword">protected</strong> HashMap[] nodes = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="79" href="#79">79</a>  
-<a class="jxr_linenumber" name="80" href="#80">80</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment">   * @var integer value used to help seed the random number generator</em>
-<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="83" href="#83">83</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> SEED_PARAM = 1560;
-<a class="jxr_linenumber" name="84" href="#84">84</a>  
-<a class="jxr_linenumber" name="85" href="#85">85</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">   * random number generator</em>
-<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="88" href="#88">88</a>  
-<a class="jxr_linenumber" name="89" href="#89">89</a>    Random ran = <strong class="jxr_keyword">new</strong> Random();
-<a class="jxr_linenumber" name="90" href="#90">90</a>  
-<a class="jxr_linenumber" name="91" href="#91">91</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">   * maximum value we can have from the ran generator</em>
-<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="94" href="#94">94</a>    <strong class="jxr_keyword">float</strong> ranMax = (<strong class="jxr_keyword">float</strong>) Math.pow(2.0, 16.0);
-<a class="jxr_linenumber" name="95" href="#95">95</a>  
-<a class="jxr_linenumber" name="96" href="#96">96</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment">   * The constructor analyzes the passed config to obtain the fundamental values</em>
-<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment">   * and data structures for locating a node. Each of those values is described</em>
-<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">   * in detail above with each property. briefly:</em>
-<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">   * this.clusters this.totalClusters this.totalNodes</em>
-<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">   * The values above are derived from the HashMap[] oonfig passed to the</em>
-<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">   * locator.</em>
-<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">   * @param conf</em>
-<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment">   *          dataConfig</em>
-<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">   * @throws Exception</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="112" href="#112">112</a> 
-<a class="jxr_linenumber" name="113" href="#113">113</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/tools/RUSHrHash.html">RUSHrHash</a>(HashMap&lt;String, Object&gt; conf) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="114" href="#114">114</a>   {
-<a class="jxr_linenumber" name="115" href="#115">115</a> 
-<a class="jxr_linenumber" name="116" href="#116">116</a>     clusterConfig = (HashMap[]) conf.get(<span class="jxr_string">"subClusters"</span>);
-<a class="jxr_linenumber" name="117" href="#117">117</a>     replicationDegree = (Integer) conf.get(<span class="jxr_string">"replicationDegree"</span>);
-<a class="jxr_linenumber" name="118" href="#118">118</a> 
-<a class="jxr_linenumber" name="119" href="#119">119</a>     HashMap[] subClusters = (HashMap[]) conf.get(<span class="jxr_string">"subClusters"</span>);
-<a class="jxr_linenumber" name="120" href="#120">120</a>     totalClusters = subClusters.length;
-<a class="jxr_linenumber" name="121" href="#121">121</a>     clusters = <strong class="jxr_keyword">new</strong> HashMap[totalClusters];
-<a class="jxr_linenumber" name="122" href="#122">122</a>     <em class="jxr_comment">// check the confg for all of the params</em>
-<a class="jxr_linenumber" name="123" href="#123">123</a>     <em class="jxr_comment">// throw a exception if they are not there</em>
-<a class="jxr_linenumber" name="124" href="#124">124</a>     <strong class="jxr_keyword">if</strong> (totalClusters &lt;= 0)
-<a class="jxr_linenumber" name="125" href="#125">125</a>     {
-<a class="jxr_linenumber" name="126" href="#126">126</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(
-<a class="jxr_linenumber" name="127" href="#127">127</a>           <span class="jxr_string">"data config to the RUSHr locator does not contain a valid clusters property"</span>);
-<a class="jxr_linenumber" name="128" href="#128">128</a>     }
-<a class="jxr_linenumber" name="129" href="#129">129</a> 
-<a class="jxr_linenumber" name="130" href="#130">130</a>     <strong class="jxr_keyword">int</strong> nodeCt = 0;
-<a class="jxr_linenumber" name="131" href="#131">131</a>     HashMap[] nodeData = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="132" href="#132">132</a>     ArrayList&lt;HashMap&gt; tempNodes = <strong class="jxr_keyword">new</strong> ArrayList&lt;HashMap&gt;();
-<a class="jxr_linenumber" name="133" href="#133">133</a>     HashMap subCluster = <strong class="jxr_keyword">null</strong>, clusterData = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="134" href="#134">134</a>     Integer clusterDataList[] = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="135" href="#135">135</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; totalClusters; i++)
-<a class="jxr_linenumber" name="136" href="#136">136</a>     {
-<a class="jxr_linenumber" name="137" href="#137">137</a>       subCluster = subClusters[i];
-<a class="jxr_linenumber" name="138" href="#138">138</a>       nodeData = (HashMap[]) subCluster.get(<span class="jxr_string">"nodes"</span>);
-<a class="jxr_linenumber" name="139" href="#139">139</a> 
-<a class="jxr_linenumber" name="140" href="#140">140</a>       nodeCt = nodeData.length;
-<a class="jxr_linenumber" name="141" href="#141">141</a>       clusterDataList = <strong class="jxr_keyword">new</strong> Integer[nodeCt];
-<a class="jxr_linenumber" name="142" href="#142">142</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> n = 0; n &lt; nodeCt; n++)
-<a class="jxr_linenumber" name="143" href="#143">143</a>       {
-<a class="jxr_linenumber" name="144" href="#144">144</a>         tempNodes.add(nodeData[n]);
-<a class="jxr_linenumber" name="145" href="#145">145</a>         clusterDataList[n] = n;
-<a class="jxr_linenumber" name="146" href="#146">146</a>       }
-<a class="jxr_linenumber" name="147" href="#147">147</a>       totalNodes += nodeCt;
-<a class="jxr_linenumber" name="148" href="#148">148</a>       totalNodesW += nodeCt * (Integer) subCluster.get(<span class="jxr_string">"weight"</span>);
-<a class="jxr_linenumber" name="149" href="#149">149</a> 
-<a class="jxr_linenumber" name="150" href="#150">150</a>       clusterData = <strong class="jxr_keyword">new</strong> HashMap&lt;String, Object&gt;();
-<a class="jxr_linenumber" name="151" href="#151">151</a>       clusterData.put(<span class="jxr_string">"count"</span>, nodeCt);
-<a class="jxr_linenumber" name="152" href="#152">152</a>       clusterData.put(<span class="jxr_string">"list"</span>, clusterDataList);
-<a class="jxr_linenumber" name="153" href="#153">153</a>       clusters[i] = clusterData;
-<a class="jxr_linenumber" name="154" href="#154">154</a>     }
-<a class="jxr_linenumber" name="155" href="#155">155</a>     nodes = <strong class="jxr_keyword">new</strong> HashMap[totalNodes];
-<a class="jxr_linenumber" name="156" href="#156">156</a>     tempNodes.toArray(nodes);
-<a class="jxr_linenumber" name="157" href="#157">157</a>   }
-<a class="jxr_linenumber" name="158" href="#158">158</a> 
-<a class="jxr_linenumber" name="159" href="#159">159</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_javadoccomment">   * This function is an implementation of a RUSHr algorithm as described by R J</em>
-<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_javadoccomment">   * Honicky and Ethan Miller</em>
-<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">   * @param objKey</em>
-<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment">   * @throws Exception</em>
-<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">   * @return</em>
-<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="167" href="#167">167</a>   <strong class="jxr_keyword">public</strong> ArrayList&lt;HashMap&gt; findNode(<strong class="jxr_keyword">long</strong> objKey) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="168" href="#168">168</a>   {
-<a class="jxr_linenumber" name="169" href="#169">169</a> 
-<a class="jxr_linenumber" name="170" href="#170">170</a>     HashMap[] c = <strong class="jxr_keyword">this</strong>.clusters;
-<a class="jxr_linenumber" name="171" href="#171">171</a>     <strong class="jxr_keyword">int</strong> sumRemainingNodes = <strong class="jxr_keyword">this</strong>.totalNodes;
-<a class="jxr_linenumber" name="172" href="#172">172</a>     <strong class="jxr_keyword">int</strong> sumRemainingNodesW = <strong class="jxr_keyword">this</strong>.totalNodesW;
-<a class="jxr_linenumber" name="173" href="#173">173</a>     <strong class="jxr_keyword">int</strong> repDeg = <strong class="jxr_keyword">this</strong>.replicationDegree;
-<a class="jxr_linenumber" name="174" href="#174">174</a>     <strong class="jxr_keyword">int</strong> totClu = <strong class="jxr_keyword">this</strong>.totalClusters;
-<a class="jxr_linenumber" name="175" href="#175">175</a>     <strong class="jxr_keyword">int</strong> totNod = <strong class="jxr_keyword">this</strong>.totalNodes;
-<a class="jxr_linenumber" name="176" href="#176">176</a>     HashMap[] clusConfig = <strong class="jxr_keyword">this</strong>.clusterConfig;
-<a class="jxr_linenumber" name="177" href="#177">177</a> 
-<a class="jxr_linenumber" name="178" href="#178">178</a>     <em class="jxr_comment">// throw an exception if the data is no good</em>
-<a class="jxr_linenumber" name="179" href="#179">179</a>     <strong class="jxr_keyword">if</strong> ((totNod &lt;= 0) || (totClu &lt;= 0))
-<a class="jxr_linenumber" name="180" href="#180">180</a>     {
-<a class="jxr_linenumber" name="181" href="#181">181</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(
-<a class="jxr_linenumber" name="182" href="#182">182</a>           <span class="jxr_string">"the total nodes or total clusters is negative or 0.  bad joo joos!"</span>);
-<a class="jxr_linenumber" name="183" href="#183">183</a>     }
-<a class="jxr_linenumber" name="184" href="#184">184</a> 
-<a class="jxr_linenumber" name="185" href="#185">185</a>     <em class="jxr_comment">// get the starting cluster</em>
-<a class="jxr_linenumber" name="186" href="#186">186</a>     <strong class="jxr_keyword">int</strong> currentCluster = totClu - 1;
-<a class="jxr_linenumber" name="187" href="#187">187</a> 
-<a class="jxr_linenumber" name="188" href="#188">188</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="189" href="#189">189</a> <em class="jxr_javadoccomment">     * this loop is an implementation of the RUSHr algorithm for fast placement</em>
-<a class="jxr_linenumber" name="190" href="#190">190</a> <em class="jxr_javadoccomment">     * and location of objects in a distributed storage system</em>
-<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_javadoccomment">     * </em>
-<a class="jxr_linenumber" name="192" href="#192">192</a> <em class="jxr_javadoccomment">     * j = current cluster m = disks in current cluster n = remaining nodes</em>
-<a class="jxr_linenumber" name="193" href="#193">193</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="194" href="#194">194</a>     ArrayList&lt;HashMap&gt; nodeData = <strong class="jxr_keyword">new</strong> ArrayList&lt;HashMap&gt;();
-<a class="jxr_linenumber" name="195" href="#195">195</a>     <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>)
-<a class="jxr_linenumber" name="196" href="#196">196</a>     {
-<a class="jxr_linenumber" name="197" href="#197">197</a> 
-<a class="jxr_linenumber" name="198" href="#198">198</a>       <em class="jxr_comment">// prevent an infinite loop, in case there is a bug</em>
-<a class="jxr_linenumber" name="199" href="#199">199</a>       <strong class="jxr_keyword">if</strong> (currentCluster &lt; 0)
-<a class="jxr_linenumber" name="200" href="#200">200</a>       {
-<a class="jxr_linenumber" name="201" href="#201">201</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(
-<a class="jxr_linenumber" name="202" href="#202">202</a>             <span class="jxr_string">"the cluster index became negative while we were looking for the following id: objKey.  This should never happen with any key.  There is a bug or maybe your joo joos are BAD!"</span>);
-<a class="jxr_linenumber" name="203" href="#203">203</a>       }
-<a class="jxr_linenumber" name="204" href="#204">204</a> 
-<a class="jxr_linenumber" name="205" href="#205">205</a>       HashMap clusterData = clusConfig[currentCluster];
-<a class="jxr_linenumber" name="206" href="#206">206</a>       Integer weight = (Integer) clusterData.get(<span class="jxr_string">"weight"</span>);
-<a class="jxr_linenumber" name="207" href="#207">207</a> 
-<a class="jxr_linenumber" name="208" href="#208">208</a>       Integer disksInCurrentCluster = (Integer) c[currentCluster].get(<span class="jxr_string">"count"</span>);
-<a class="jxr_linenumber" name="209" href="#209">209</a>       sumRemainingNodes -= disksInCurrentCluster;
-<a class="jxr_linenumber" name="210" href="#210">210</a> 
-<a class="jxr_linenumber" name="211" href="#211">211</a>       Integer disksInCurrentClusterW = disksInCurrentCluster * weight;
-<a class="jxr_linenumber" name="212" href="#212">212</a>       sumRemainingNodesW -= disksInCurrentClusterW;
-<a class="jxr_linenumber" name="213" href="#213">213</a> 
-<a class="jxr_linenumber" name="214" href="#214">214</a>       <em class="jxr_comment">// set the seed to our set id</em>
-<a class="jxr_linenumber" name="215" href="#215">215</a>       <strong class="jxr_keyword">long</strong> seed = objKey + currentCluster;
-<a class="jxr_linenumber" name="216" href="#216">216</a>       ran.setSeed(seed);
-<a class="jxr_linenumber" name="217" href="#217">217</a>       <strong class="jxr_keyword">int</strong> t = (repDeg - sumRemainingNodes) &gt; 0 ? (repDeg - sumRemainingNodes)
-<a class="jxr_linenumber" name="218" href="#218">218</a>           : 0;
-<a class="jxr_linenumber" name="219" href="#219">219</a> 
-<a class="jxr_linenumber" name="220" href="#220">220</a>       <strong class="jxr_keyword">int</strong> u = t
-<a class="jxr_linenumber" name="221" href="#221">221</a>           + drawWHG(repDeg - t, disksInCurrentClusterW - t,
-<a class="jxr_linenumber" name="222" href="#222">222</a>               disksInCurrentClusterW + sumRemainingNodesW - t, weight);
-<a class="jxr_linenumber" name="223" href="#223">223</a>       <strong class="jxr_keyword">if</strong> (u &gt; 0)
-<a class="jxr_linenumber" name="224" href="#224">224</a>       {
-<a class="jxr_linenumber" name="225" href="#225">225</a>         <strong class="jxr_keyword">if</strong> (u &gt; disksInCurrentCluster)
-<a class="jxr_linenumber" name="226" href="#226">226</a>         {
-<a class="jxr_linenumber" name="227" href="#227">227</a>           u = disksInCurrentCluster;
-<a class="jxr_linenumber" name="228" href="#228">228</a>         }
-<a class="jxr_linenumber" name="229" href="#229">229</a>         ran.setSeed(objKey + currentCluster + SEED_PARAM);
-<a class="jxr_linenumber" name="230" href="#230">230</a>         choose(u, currentCluster, sumRemainingNodes, nodeData);
-<a class="jxr_linenumber" name="231" href="#231">231</a>         reset(u, currentCluster);
-<a class="jxr_linenumber" name="232" href="#232">232</a>         repDeg -= u;
-<a class="jxr_linenumber" name="233" href="#233">233</a>       }
-<a class="jxr_linenumber" name="234" href="#234">234</a>       <strong class="jxr_keyword">if</strong> (repDeg == 0)
-<a class="jxr_linenumber" name="235" href="#235">235</a>       {
-<a class="jxr_linenumber" name="236" href="#236">236</a>         <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="237" href="#237">237</a>       }
-<a class="jxr_linenumber" name="238" href="#238">238</a>       currentCluster--;
-<a class="jxr_linenumber" name="239" href="#239">239</a>     }
-<a class="jxr_linenumber" name="240" href="#240">240</a>     <strong class="jxr_keyword">return</strong> nodeData;
-<a class="jxr_linenumber" name="241" href="#241">241</a>   }
-<a class="jxr_linenumber" name="242" href="#242">242</a> 
-<a class="jxr_linenumber" name="243" href="#243">243</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="244" href="#244">244</a> <em class="jxr_javadoccomment">   * This function is an implementation of a RUSH algorithm as described by R J</em>
-<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_javadoccomment">   * Honicky and Ethan Miller</em>
-<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_javadoccomment">   * @param objKey</em>
-<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment">   *          - an int used as the prng seed. this int is usually derived from a</em>
-<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment">   *          string hash</em>
-<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment">   * @return node - holds three values: abs_node - an int which is the absolute</em>
-<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_javadoccomment">   *         position of the located node in relation to all nodes on all</em>
-<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_javadoccomment">   *         subClusters rel_node - an int which is the relative postion located</em>
-<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_javadoccomment">   *         node within the located cluster cluster - an int which is the</em>
-<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_javadoccomment">   *         located cluster</em>
-<a class="jxr_linenumber" name="256" href="#256">256</a> <em class="jxr_javadoccomment">   * @throws Exception</em>
-<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment">   * </em>
-<a class="jxr_linenumber" name="258" href="#258">258</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="259" href="#259">259</a>   <strong class="jxr_keyword">public</strong> ArrayList&lt;HashMap&gt; findNode(String objKey) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="260" href="#260">260</a>   {
-<a class="jxr_linenumber" name="261" href="#261">261</a>     <em class="jxr_comment">// turn a string identifier into an integer for the random seed</em>
-<a class="jxr_linenumber" name="262" href="#262">262</a>     CRC32 crc32 = <strong class="jxr_keyword">new</strong> CRC32();
-<a class="jxr_linenumber" name="263" href="#263">263</a>     byte[] bytes = objKey.getBytes();
-<a class="jxr_linenumber" name="264" href="#264">264</a>     crc32.update(bytes);
-<a class="jxr_linenumber" name="265" href="#265">265</a>     <strong class="jxr_keyword">long</strong> crc32Value = crc32.getValue();
-<a class="jxr_linenumber" name="266" href="#266">266</a>     <strong class="jxr_keyword">long</strong> objKeyLong = (crc32Value &gt;&gt; 16) &amp; 0x7fff;
-<a class="jxr_linenumber" name="267" href="#267">267</a>     <strong class="jxr_keyword">return</strong> findNode(objKeyLong);
-<a class="jxr_linenumber" name="268" href="#268">268</a>   }
-<a class="jxr_linenumber" name="269" href="#269">269</a> 
-<a class="jxr_linenumber" name="270" href="#270">270</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> reset(<strong class="jxr_keyword">int</strong> nodesToRetrieve, <strong class="jxr_keyword">int</strong> currentCluster)
-<a class="jxr_linenumber" name="271" href="#271">271</a>   {
-<a class="jxr_linenumber" name="272" href="#272">272</a>     Integer[] list = (Integer[]) clusters[currentCluster].get(<span class="jxr_string">"list"</span>);
-<a class="jxr_linenumber" name="273" href="#273">273</a>     Integer count = (Integer) clusters[currentCluster].get(<span class="jxr_string">"count"</span>);
-<a class="jxr_linenumber" name="274" href="#274">274</a> 
-<a class="jxr_linenumber" name="275" href="#275">275</a>     <strong class="jxr_keyword">int</strong> listIdx;
-<a class="jxr_linenumber" name="276" href="#276">276</a>     <strong class="jxr_keyword">int</strong> val;
-<a class="jxr_linenumber" name="277" href="#277">277</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> nodeIdx = 0; nodeIdx &lt; nodesToRetrieve; nodeIdx++)
-<a class="jxr_linenumber" name="278" href="#278">278</a>     {
-<a class="jxr_linenumber" name="279" href="#279">279</a>       listIdx = count - nodesToRetrieve + nodeIdx;
-<a class="jxr_linenumber" name="280" href="#280">280</a>       val = list[listIdx];
-<a class="jxr_linenumber" name="281" href="#281">281</a>       <strong class="jxr_keyword">if</strong> (val &lt; (count - nodesToRetrieve))
-<a class="jxr_linenumber" name="282" href="#282">282</a>       {
-<a class="jxr_linenumber" name="283" href="#283">283</a>         list[val] = val;
-<a class="jxr_linenumber" name="284" href="#284">284</a>       }
-<a class="jxr_linenumber" name="285" href="#285">285</a>       list[listIdx] = listIdx;
-<a class="jxr_linenumber" name="286" href="#286">286</a>     }
-<a class="jxr_linenumber" name="287" href="#287">287</a>   }
-<a class="jxr_linenumber" name="288" href="#288">288</a> 
-<a class="jxr_linenumber" name="289" href="#289">289</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> choose(<strong class="jxr_keyword">int</strong> nodesToRetrieve, <strong class="jxr_keyword">int</strong> currentCluster,
-<a class="jxr_linenumber" name="290" href="#290">290</a>       <strong class="jxr_keyword">int</strong> remainingNodes, ArrayList&lt;HashMap&gt; nodeData)
-<a class="jxr_linenumber" name="291" href="#291">291</a>   {
-<a class="jxr_linenumber" name="292" href="#292">292</a>     Integer[] list = (Integer[]) clusters[currentCluster].get(<span class="jxr_string">"list"</span>);
-<a class="jxr_linenumber" name="293" href="#293">293</a>     Integer count = (Integer) clusters[currentCluster].get(<span class="jxr_string">"count"</span>);
-<a class="jxr_linenumber" name="294" href="#294">294</a> 
-<a class="jxr_linenumber" name="295" href="#295">295</a>     <strong class="jxr_keyword">int</strong> maxIdx;
-<a class="jxr_linenumber" name="296" href="#296">296</a>     <strong class="jxr_keyword">int</strong> randNode;
-<a class="jxr_linenumber" name="297" href="#297">297</a>     <strong class="jxr_keyword">int</strong> chosen;
-<a class="jxr_linenumber" name="298" href="#298">298</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> nodeIdx = 0; nodeIdx &lt; nodesToRetrieve; nodeIdx++)
-<a class="jxr_linenumber" name="299" href="#299">299</a>     {
-<a class="jxr_linenumber" name="300" href="#300">300</a>       maxIdx = count - nodeIdx - 1;
-<a class="jxr_linenumber" name="301" href="#301">301</a>       randNode = ran.nextInt(maxIdx + 1);
-<a class="jxr_linenumber" name="302" href="#302">302</a>       <em class="jxr_comment">// swap</em>
-<a class="jxr_linenumber" name="303" href="#303">303</a>       chosen = list[randNode];
-<a class="jxr_linenumber" name="304" href="#304">304</a>       list[randNode] = list[maxIdx];
-<a class="jxr_linenumber" name="305" href="#305">305</a>       list[maxIdx] = chosen;
-<a class="jxr_linenumber" name="306" href="#306">306</a>       <em class="jxr_comment">// add the remaining nodes so we can find the node data when we are done</em>
-<a class="jxr_linenumber" name="307" href="#307">307</a>       nodeData.add(nodes[remainingNodes + chosen]);
-<a class="jxr_linenumber" name="308" href="#308">308</a>     }
-<a class="jxr_linenumber" name="309" href="#309">309</a>   }
-<a class="jxr_linenumber" name="310" href="#310">310</a> 
-<a class="jxr_linenumber" name="311" href="#311">311</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="312" href="#312">312</a> <em class="jxr_javadoccomment">   * @param objKey</em>
-<a class="jxr_linenumber" name="313" href="#313">313</a> <em class="jxr_javadoccomment">   * @return</em>
-<a class="jxr_linenumber" name="314" href="#314">314</a> <em class="jxr_javadoccomment">   * @throws com.targetnode.data.locator.Exception</em>
-<a class="jxr_linenumber" name="315" href="#315">315</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="316" href="#316">316</a>   <strong class="jxr_keyword">public</strong> ArrayList&lt;HashMap&gt; findNodes(String objKey) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="317" href="#317">317</a>   {
-<a class="jxr_linenumber" name="318" href="#318">318</a>     <strong class="jxr_keyword">return</strong> findNode(objKey);
-<a class="jxr_linenumber" name="319" href="#319">319</a>   }
-<a class="jxr_linenumber" name="320" href="#320">320</a> 
-<a class="jxr_linenumber" name="321" href="#321">321</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getReplicationDegree()
-<a class="jxr_linenumber" name="322" href="#322">322</a>   {
-<a class="jxr_linenumber" name="323" href="#323">323</a>     <strong class="jxr_keyword">return</strong> replicationDegree;
-<a class="jxr_linenumber" name="324" href="#324">324</a>   }
-<a class="jxr_linenumber" name="325" href="#325">325</a> 
-<a class="jxr_linenumber" name="326" href="#326">326</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getTotalNodes()
-<a class="jxr_linenumber" name="327" href="#327">327</a>   {
-<a class="jxr_linenumber" name="328" href="#328">328</a>     <strong class="jxr_keyword">return</strong> totalNodes;
-<a class="jxr_linenumber" name="329" href="#329">329</a>   }
-<a class="jxr_linenumber" name="330" href="#330">330</a> 
-<a class="jxr_linenumber" name="331" href="#331">331</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> drawWHG(<strong class="jxr_keyword">int</strong> replicas, <strong class="jxr_keyword">int</strong> disksInCurrentCluster, <strong class="jxr_keyword">int</strong> totalDisks,
-<a class="jxr_linenumber" name="332" href="#332">332</a>       <strong class="jxr_keyword">int</strong> weight)
-<a class="jxr_linenumber" name="333" href="#333">333</a>   {
-<a class="jxr_linenumber" name="334" href="#334">334</a>     <strong class="jxr_keyword">int</strong> found = 0;
-<a class="jxr_linenumber" name="335" href="#335">335</a>     <strong class="jxr_keyword">float</strong> z;
-<a class="jxr_linenumber" name="336" href="#336">336</a>     <strong class="jxr_keyword">float</strong> prob;
-<a class="jxr_linenumber" name="337" href="#337">337</a>     <strong class="jxr_keyword">int</strong> ranInt;
-<a class="jxr_linenumber" name="338" href="#338">338</a> 
-<a class="jxr_linenumber" name="339" href="#339">339</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; replicas; i++)
-<a class="jxr_linenumber" name="340" href="#340">340</a>     {
-<a class="jxr_linenumber" name="341" href="#341">341</a>       <strong class="jxr_keyword">if</strong> (totalDisks != 0)
-<a class="jxr_linenumber" name="342" href="#342">342</a>       {
-<a class="jxr_linenumber" name="343" href="#343">343</a>         ranInt = ran.nextInt((<strong class="jxr_keyword">int</strong>) (ranMax + 1));
-<a class="jxr_linenumber" name="344" href="#344">344</a>         z = ((<strong class="jxr_keyword">float</strong>) ranInt / ranMax);
-<a class="jxr_linenumber" name="345" href="#345">345</a>         prob = ((<strong class="jxr_keyword">float</strong>) disksInCurrentCluster / (<strong class="jxr_keyword">float</strong>) totalDisks);
-<a class="jxr_linenumber" name="346" href="#346">346</a>         <strong class="jxr_keyword">if</strong> (z &lt;= prob)
-<a class="jxr_linenumber" name="347" href="#347">347</a>         {
-<a class="jxr_linenumber" name="348" href="#348">348</a>           found++;
-<a class="jxr_linenumber" name="349" href="#349">349</a>           disksInCurrentCluster -= weight;
-<a class="jxr_linenumber" name="350" href="#350">350</a>         }
-<a class="jxr_linenumber" name="351" href="#351">351</a>         totalDisks -= weight;
-<a class="jxr_linenumber" name="352" href="#352">352</a>       }
-<a class="jxr_linenumber" name="353" href="#353">353</a>     }
-<a class="jxr_linenumber" name="354" href="#354">354</a>     <strong class="jxr_keyword">return</strong> found;
-<a class="jxr_linenumber" name="355" href="#355">355</a>   }
-<a class="jxr_linenumber" name="356" href="#356">356</a> }
+<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.zip.CRC32;
+<a class="jxr_linenumber" name="24" href="#24">24</a>  
+<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/helix/tools/RUSHrHash.html">RUSHrHash</a>
+<a class="jxr_linenumber" name="26" href="#26">26</a>  {
+<a class="jxr_linenumber" name="27" href="#27">27</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="28" href="#28">28</a>  <em class="jxr_javadoccomment">   * @var int holds the value for how many replicas to create for an object</em>
+<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="30" href="#30">30</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> replicationDegree = 1;
+<a class="jxr_linenumber" name="31" href="#31">31</a>  
+<a class="jxr_linenumber" name="32" href="#32">32</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment">   * an array of hash maps where each hash map holds info on the sub cluster</em>
+<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment">   * that corresponds to the array indices meaning that array element 0 holds</em>
+<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment">   * data for server 0</em>
+<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment">   * that is the total number of nodes in the cluster this property is populated</em>
+<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment">   * at construction time only</em>
+<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment">   * @var</em>
+<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="42" href="#42">42</a>  
+<a class="jxr_linenumber" name="43" href="#43">43</a>    <strong class="jxr_keyword">protected</strong> HashMap[] clusters;
+<a class="jxr_linenumber" name="44" href="#44">44</a>  
+<a class="jxr_linenumber" name="45" href="#45">45</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment">   * an array of hash maps where each element holds data for a sub cluster</em>
+<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="48" href="#48">48</a>    <strong class="jxr_keyword">protected</strong> HashMap[] clusterConfig;
+<a class="jxr_linenumber" name="49" href="#49">49</a>  
+<a class="jxr_linenumber" name="50" href="#50">50</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment">   * total number of sub-clusters in our data configuration this property is</em>
+<a class="jxr_linenumber" name="52" href="#52">52</a>  <em class="jxr_javadoccomment">   * populated at construction time only</em>
+<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment">   * @var integer</em>
+<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="56" href="#56">56</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> totalClusters = 0;
+<a class="jxr_linenumber" name="57" href="#57">57</a>  
+<a class="jxr_linenumber" name="58" href="#58">58</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment">   * the total number of nodes in all of the subClusters this property is</em>
+<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">   * populated at construction time only</em>
+<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment">   * @var integer</em>
+<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="64" href="#64">64</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> totalNodes = 0;
+<a class="jxr_linenumber" name="65" href="#65">65</a>  
+<a class="jxr_linenumber" name="66" href="#66">66</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment">   * the total number of nodes in all of the clusters this property is populated</em>
+<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">   * at construction time only</em>
+<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">   * @var integer</em>
+<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="72" href="#72">72</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> totalNodesW = 0;
+<a class="jxr_linenumber" name="73" href="#73">73</a>  
+<a class="jxr_linenumber" name="74" href="#74">74</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">   * an array of HashMaps where each HashMap holds the data for a single node</em>
+<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="77" href="#77">77</a>    <strong class="jxr_keyword">protected</strong> HashMap[] nodes = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="78" href="#78">78</a>  
+<a class="jxr_linenumber" name="79" href="#79">79</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="80" href="#80">80</a>  <em class="jxr_javadoccomment">   * @var integer value used to help seed the random number generator</em>
+<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="82" href="#82">82</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> SEED_PARAM = 1560;
+<a class="jxr_linenumber" name="83" href="#83">83</a>  
+<a class="jxr_linenumber" name="84" href="#84">84</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment">   * random number generator</em>
+<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="87" href="#87">87</a>  
+<a class="jxr_linenumber" name="88" href="#88">88</a>    Random ran = <strong class="jxr_keyword">new</strong> Random();
+<a class="jxr_linenumber" name="89" href="#89">89</a>  
+<a class="jxr_linenumber" name="90" href="#90">90</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">   * maximum value we can have from the ran generator</em>
+<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="93" href="#93">93</a>    <strong class="jxr_keyword">float</strong> ranMax = (<strong class="jxr_keyword">float</strong>) Math.pow(2.0, 16.0);
+<a class="jxr_linenumber" name="94" href="#94">94</a>  
+<a class="jxr_linenumber" name="95" href="#95">95</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="96" href="#96">96</a>  <em class="jxr_javadoccomment">   * The constructor analyzes the passed config to obtain the fundamental values</em>
+<a class="jxr_linenumber" name="97" href="#97">97</a>  <em class="jxr_javadoccomment">   * and data structures for locating a node. Each of those values is described</em>
+<a class="jxr_linenumber" name="98" href="#98">98</a>  <em class="jxr_javadoccomment">   * in detail above with each property. briefly:</em>
+<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">   * this.clusters this.totalClusters this.totalNodes</em>
+<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">   * The values above are derived from the HashMap[] oonfig passed to the</em>
+<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">   * locator.</em>
+<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">   * @param conf</em>
+<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">   *          dataConfig</em>
+<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">   * @throws Exception</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="111" href="#111">111</a> 
+<a class="jxr_linenumber" name="112" href="#112">112</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/helix/tools/RUSHrHash.html">RUSHrHash</a>(HashMap&lt;String, Object&gt; conf) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="113" href="#113">113</a>   {
+<a class="jxr_linenumber" name="114" href="#114">114</a> 
+<a class="jxr_linenumber" name="115" href="#115">115</a>     clusterConfig = (HashMap[]) conf.get(<span class="jxr_string">"subClusters"</span>);
+<a class="jxr_linenumber" name="116" href="#116">116</a>     replicationDegree = (Integer) conf.get(<span class="jxr_string">"replicationDegree"</span>);
+<a class="jxr_linenumber" name="117" href="#117">117</a> 
+<a class="jxr_linenumber" name="118" href="#118">118</a>     HashMap[] subClusters = (HashMap[]) conf.get(<span class="jxr_string">"subClusters"</span>);
+<a class="jxr_linenumber" name="119" href="#119">119</a>     totalClusters = subClusters.length;
+<a class="jxr_linenumber" name="120" href="#120">120</a>     clusters = <strong class="jxr_keyword">new</strong> HashMap[totalClusters];
+<a class="jxr_linenumber" name="121" href="#121">121</a>     <em class="jxr_comment">// check the confg for all of the params</em>
+<a class="jxr_linenumber" name="122" href="#122">122</a>     <em class="jxr_comment">// throw a exception if they are not there</em>
+<a class="jxr_linenumber" name="123" href="#123">123</a>     <strong class="jxr_keyword">if</strong> (totalClusters &lt;= 0)
+<a class="jxr_linenumber" name="124" href="#124">124</a>     {
+<a class="jxr_linenumber" name="125" href="#125">125</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(
+<a class="jxr_linenumber" name="126" href="#126">126</a>           <span class="jxr_string">"data config to the RUSHr locator does not contain a valid clusters property"</span>);
+<a class="jxr_linenumber" name="127" href="#127">127</a>     }
+<a class="jxr_linenumber" name="128" href="#128">128</a> 
+<a class="jxr_linenumber" name="129" href="#129">129</a>     <strong class="jxr_keyword">int</strong> nodeCt = 0;
+<a class="jxr_linenumber" name="130" href="#130">130</a>     HashMap[] nodeData = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="131" href="#131">131</a>     ArrayList&lt;HashMap&gt; tempNodes = <strong class="jxr_keyword">new</strong> ArrayList&lt;HashMap&gt;();
+<a class="jxr_linenumber" name="132" href="#132">132</a>     HashMap&lt;String, Object&gt; subCluster = <strong class="jxr_keyword">null</strong>, clusterData = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="133" href="#133">133</a>     Integer clusterDataList[] = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="134" href="#134">134</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; totalClusters; i++)
+<a class="jxr_linenumber" name="135" href="#135">135</a>     {
+<a class="jxr_linenumber" name="136" href="#136">136</a>       subCluster = subClusters[i];
+<a class="jxr_linenumber" name="137" href="#137">137</a>       nodeData = (HashMap[]) subCluster.get(<span class="jxr_string">"nodes"</span>);
+<a class="jxr_linenumber" name="138" href="#138">138</a> 
+<a class="jxr_linenumber" name="139" href="#139">139</a>       nodeCt = nodeData.length;
+<a class="jxr_linenumber" name="140" href="#140">140</a>       clusterDataList = <strong class="jxr_keyword">new</strong> Integer[nodeCt];
+<a class="jxr_linenumber" name="141" href="#141">141</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> n = 0; n &lt; nodeCt; n++)
+<a class="jxr_linenumber" name="142" href="#142">142</a>       {
+<a class="jxr_linenumber" name="143" href="#143">143</a>         tempNodes.add(nodeData[n]);
+<a class="jxr_linenumber" name="144" href="#144">144</a>         clusterDataList[n] = n;
+<a class="jxr_linenumber" name="145" href="#145">145</a>       }
+<a class="jxr_linenumber" name="146" href="#146">146</a>       totalNodes += nodeCt;
+<a class="jxr_linenumber" name="147" href="#147">147</a>       totalNodesW += nodeCt * (Integer) subCluster.get(<span class="jxr_string">"weight"</span>);
+<a class="jxr_linenumber" name="148" href="#148">148</a> 
+<a class="jxr_linenumber" name="149" href="#149">149</a>       clusterData = <strong class="jxr_keyword">new</strong> HashMap&lt;String, Object&gt;();
+<a class="jxr_linenumber" name="150" href="#150">150</a>       clusterData.put(<span class="jxr_string">"count"</span>, nodeCt);
+<a class="jxr_linenumber" name="151" href="#151">151</a>       clusterData.put(<span class="jxr_string">"list"</span>, clusterDataList);
+<a class="jxr_linenumber" name="152" href="#152">152</a>       clusters[i] = clusterData;
+<a class="jxr_linenumber" name="153" href="#153">153</a>     }
+<a class="jxr_linenumber" name="154" href="#154">154</a>     nodes = <strong class="jxr_keyword">new</strong> HashMap[totalNodes];
+<a class="jxr_linenumber" name="155" href="#155">155</a>     tempNodes.toArray(nodes);
+<a class="jxr_linenumber" name="156" href="#156">156</a>   }
+<a class="jxr_linenumber" name="157" href="#157">157</a> 
+<a class="jxr_linenumber" name="158" href="#158">158</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="159" href="#159">159</a> <em class="jxr_javadoccomment">   * This function is an implementation of a RUSHr algorithm as described by R J</em>
+<a class="jxr_linenumber" name="160" href="#160">160</a> <em class="jxr_javadoccomment">   * Honicky and Ethan Miller</em>
+<a class="jxr_linenumber" name="161" href="#161">161</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment">   * @param objKey</em>
+<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">   * @throws Exception</em>
+<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment">   * @return</em>
+<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="166" href="#166">166</a>   <strong class="jxr_keyword">public</strong> ArrayList&lt;HashMap&gt; findNode(<strong class="jxr_keyword">long</strong> objKey) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="167" href="#167">167</a>   {
+<a class="jxr_linenumber" name="168" href="#168">168</a> 
+<a class="jxr_linenumber" name="169" href="#169">169</a>     HashMap[] c = <strong class="jxr_keyword">this</strong>.clusters;
+<a class="jxr_linenumber" name="170" href="#170">170</a>     <strong class="jxr_keyword">int</strong> sumRemainingNodes = <strong class="jxr_keyword">this</strong>.totalNodes;
+<a class="jxr_linenumber" name="171" href="#171">171</a>     <strong class="jxr_keyword">int</strong> sumRemainingNodesW = <strong class="jxr_keyword">this</strong>.totalNodesW;
+<a class="jxr_linenumber" name="172" href="#172">172</a>     <strong class="jxr_keyword">int</strong> repDeg = <strong class="jxr_keyword">this</strong>.replicationDegree;
+<a class="jxr_linenumber" name="173" href="#173">173</a>     <strong class="jxr_keyword">int</strong> totClu = <strong class="jxr_keyword">this</strong>.totalClusters;
+<a class="jxr_linenumber" name="174" href="#174">174</a>     <strong class="jxr_keyword">int</strong> totNod = <strong class="jxr_keyword">this</strong>.totalNodes;
+<a class="jxr_linenumber" name="175" href="#175">175</a>     HashMap[] clusConfig = <strong class="jxr_keyword">this</strong>.clusterConfig;
+<a class="jxr_linenumber" name="176" href="#176">176</a> 
+<a class="jxr_linenumber" name="177" href="#177">177</a>     <em class="jxr_comment">// throw an exception if the data is no good</em>
+<a class="jxr_linenumber" name="178" href="#178">178</a>     <strong class="jxr_keyword">if</strong> ((totNod &lt;= 0) || (totClu &lt;= 0))
+<a class="jxr_linenumber" name="179" href="#179">179</a>     {
+<a class="jxr_linenumber" name="180" href="#180">180</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(
+<a class="jxr_linenumber" name="181" href="#181">181</a>           <span class="jxr_string">"the total nodes or total clusters is negative or 0.  bad joo joos!"</span>);
+<a class="jxr_linenumber" name="182" href="#182">182</a>     }
+<a class="jxr_linenumber" name="183" href="#183">183</a> 
+<a class="jxr_linenumber" name="184" href="#184">184</a>     <em class="jxr_comment">// get the starting cluster</em>
+<a class="jxr_linenumber" name="185" href="#185">185</a>     <strong class="jxr_keyword">int</strong> currentCluster = totClu - 1;
+<a class="jxr_linenumber" name="186" href="#186">186</a> 
+<a class="jxr_linenumber" name="187" href="#187">187</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="188" href="#188">188</a> <em class="jxr_javadoccomment">     * this loop is an implementation of the RUSHr algorithm for fast placement</em>
+<a class="jxr_linenumber" name="189" href="#189">189</a> <em class="jxr_javadoccomment">     * and location of objects in a distributed storage system</em>
+<a class="jxr_linenumber" name="190" href="#190">190</a> <em class="jxr_javadoccomment">     * </em>
+<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_javadoccomment">     * j = current cluster m = disks in current cluster n = remaining nodes</em>
+<a class="jxr_linenumber" name="192" href="#192">192</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="193" href="#193">193</a>     ArrayList&lt;HashMap&gt; nodeData = <strong class="jxr_keyword">new</strong> ArrayList&lt;HashMap&gt;();
+<a class="jxr_linenumber" name="194" href="#194">194</a>     <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>)
+<a class="jxr_linenumber" name="195" href="#195">195</a>     {
+<a class="jxr_linenumber" name="196" href="#196">196</a> 
+<a class="jxr_linenumber" name="197" href="#197">197</a>       <em class="jxr_comment">// prevent an infinite loop, in case there is a bug</em>
+<a class="jxr_linenumber" name="198" href="#198">198</a>       <strong class="jxr_keyword">if</strong> (currentCluster &lt; 0)
+<a class="jxr_linenumber" name="199" href="#199">199</a>       {
+<a class="jxr_linenumber" name="200" href="#200">200</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> Exception(
+<a class="jxr_linenumber" name="201" href="#201">201</a>             <span class="jxr_string">"the cluster index became negative while we were looking for the following id: objKey.  This should never happen with any key.  There is a bug or maybe your joo joos are BAD!"</span>);
+<a class="jxr_linenumber" name="202" href="#202">202</a>       }
+<a class="jxr_linenumber" name="203" href="#203">203</a> 
+<a class="jxr_linenumber" name="204" href="#204">204</a>       HashMap clusterData = clusConfig[currentCluster];
+<a class="jxr_linenumber" name="205" href="#205">205</a>       Integer weight = (Integer) clusterData.get(<span class="jxr_string">"weight"</span>);
+<a class="jxr_linenumber" name="206" href="#206">206</a> 
+<a class="jxr_linenumber" name="207" href="#207">207</a>       Integer disksInCurrentCluster = (Integer) c[currentCluster].get(<span class="jxr_string">"count"</span>);
+<a class="jxr_linenumber" name="208" href="#208">208</a>       sumRemainingNodes -= disksInCurrentCluster;
+<a class="jxr_linenumber" name="209" href="#209">209</a> 
+<a class="jxr_linenumber" name="210" href="#210">210</a>       Integer disksInCurrentClusterW = disksInCurrentCluster * weight;
+<a class="jxr_linenumber" name="211" href="#211">211</a>       sumRemainingNodesW -= disksInCurrentClusterW;
+<a class="jxr_linenumber" name="212" href="#212">212</a> 
+<a class="jxr_linenumber" name="213" href="#213">213</a>       <em class="jxr_comment">// set the seed to our set id</em>
+<a class="jxr_linenumber" name="214" href="#214">214</a>       <strong class="jxr_keyword">long</strong> seed = objKey + currentCluster;
+<a class="jxr_linenumber" name="215" href="#215">215</a>       ran.setSeed(seed);
+<a class="jxr_linenumber" name="216" href="#216">216</a>       <strong class="jxr_keyword">int</strong> t = (repDeg - sumRemainingNodes) &gt; 0 ? (repDeg - sumRemainingNodes)
+<a class="jxr_linenumber" name="217" href="#217">217</a>           : 0;
+<a class="jxr_linenumber" name="218" href="#218">218</a> 
+<a class="jxr_linenumber" name="219" href="#219">219</a>       <strong class="jxr_keyword">int</strong> u = t
+<a class="jxr_linenumber" name="220" href="#220">220</a>           + drawWHG(repDeg - t, disksInCurrentClusterW - t,
+<a class="jxr_linenumber" name="221" href="#221">221</a>               disksInCurrentClusterW + sumRemainingNodesW - t, weight);
+<a class="jxr_linenumber" name="222" href="#222">222</a>       <strong class="jxr_keyword">if</strong> (u &gt; 0)
+<a class="jxr_linenumber" name="223" href="#223">223</a>       {
+<a class="jxr_linenumber" name="224" href="#224">224</a>         <strong class="jxr_keyword">if</strong> (u &gt; disksInCurrentCluster)
+<a class="jxr_linenumber" name="225" href="#225">225</a>         {
+<a class="jxr_linenumber" name="226" href="#226">226</a>           u = disksInCurrentCluster;
+<a class="jxr_linenumber" name="227" href="#227">227</a>         }
+<a class="jxr_linenumber" name="228" href="#228">228</a>         ran.setSeed(objKey + currentCluster + SEED_PARAM);
+<a class="jxr_linenumber" name="229" href="#229">229</a>         choose(u, currentCluster, sumRemainingNodes, nodeData);
+<a class="jxr_linenumber" name="230" href="#230">230</a>         reset(u, currentCluster);
+<a class="jxr_linenumber" name="231" href="#231">231</a>         repDeg -= u;
+<a class="jxr_linenumber" name="232" href="#232">232</a>       }
+<a class="jxr_linenumber" name="233" href="#233">233</a>       <strong class="jxr_keyword">if</strong> (repDeg == 0)
+<a class="jxr_linenumber" name="234" href="#234">234</a>       {
+<a class="jxr_linenumber" name="235" href="#235">235</a>         <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="236" href="#236">236</a>       }
+<a class="jxr_linenumber" name="237" href="#237">237</a>       currentCluster--;
+<a class="jxr_linenumber" name="238" href="#238">238</a>     }
+<a class="jxr_linenumber" name="239" href="#239">239</a>     <strong class="jxr_keyword">return</strong> nodeData;
+<a class="jxr_linenumber" name="240" href="#240">240</a>   }
+<a class="jxr_linenumber" name="241" href="#241">241</a> 
+<a class="jxr_linenumber" name="242" href="#242">242</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="243" href="#243">243</a> <em class="jxr_javadoccomment">   * This function is an implementation of a RUSH algorithm as described by R J</em>
+<a class="jxr_linenumber" name="244" href="#244">244</a> <em class="jxr_javadoccomment">   * Honicky and Ethan Miller</em>
+<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_javadoccomment">   * @param objKey</em>
+<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_javadoccomment">   *          - an int used as the prng seed. this int is usually derived from a</em>
+<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment">   *          string hash</em>
+<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment">   * @return node - holds three values: abs_node - an int which is the absolute</em>
+<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment">   *         position of the located node in relation to all nodes on all</em>
+<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_javadoccomment">   *         subClusters rel_node - an int which is the relative postion located</em>
+<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_javadoccomment">   *         node within the located cluster cluster - an int which is the</em>
+<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_javadoccomment">   *         located cluster</em>
+<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_javadoccomment">   * @throws Exception</em>
+<a class="jxr_linenumber" name="256" href="#256">256</a> <em class="jxr_javadoccomment">   * </em>
+<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="258" href="#258">258</a>   <strong class="jxr_keyword">public</strong> ArrayList&lt;HashMap&gt; findNode(String objKey) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="259" href="#259">259</a>   {
+<a class="jxr_linenumber" name="260" href="#260">260</a>     <em class="jxr_comment">// turn a string identifier into an integer for the random seed</em>
+<a class="jxr_linenumber" name="261" href="#261">261</a>     CRC32 crc32 = <strong class="jxr_keyword">new</strong> CRC32();
+<a class="jxr_linenumber" name="262" href="#262">262</a>     byte[] bytes = objKey.getBytes();
+<a class="jxr_linenumber" name="263" href="#263">263</a>     crc32.update(bytes);
+<a class="jxr_linenumber" name="264" href="#264">264</a>     <strong class="jxr_keyword">long</strong> crc32Value = crc32.getValue();
+<a class="jxr_linenumber" name="265" href="#265">265</a>     <strong class="jxr_keyword">long</strong> objKeyLong = (crc32Value &gt;&gt; 16) &amp; 0x7fff;
+<a class="jxr_linenumber" name="266" href="#266">266</a>     <strong class="jxr_keyword">return</strong> findNode(objKeyLong);
+<a class="jxr_linenumber" name="267" href="#267">267</a>   }
+<a class="jxr_linenumber" name="268" href="#268">268</a> 
+<a class="jxr_linenumber" name="269" href="#269">269</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> reset(<strong class="jxr_keyword">int</strong> nodesToRetrieve, <strong class="jxr_keyword">int</strong> currentCluster)
+<a class="jxr_linenumber" name="270" href="#270">270</a>   {
+<a class="jxr_linenumber" name="271" href="#271">271</a>     Integer[] list = (Integer[]) clusters[currentCluster].get(<span class="jxr_string">"list"</span>);
+<a class="jxr_linenumber" name="272" href="#272">272</a>     Integer count = (Integer) clusters[currentCluster].get(<span class="jxr_string">"count"</span>);
+<a class="jxr_linenumber" name="273" href="#273">273</a> 
+<a class="jxr_linenumber" name="274" href="#274">274</a>     <strong class="jxr_keyword">int</strong> listIdx;
+<a class="jxr_linenumber" name="275" href="#275">275</a>     <strong class="jxr_keyword">int</strong> val;
+<a class="jxr_linenumber" name="276" href="#276">276</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> nodeIdx = 0; nodeIdx &lt; nodesToRetrieve; nodeIdx++)
+<a class="jxr_linenumber" name="277" href="#277">277</a>     {
+<a class="jxr_linenumber" name="278" href="#278">278</a>       listIdx = count - nodesToRetrieve + nodeIdx;
+<a class="jxr_linenumber" name="279" href="#279">279</a>       val = list[listIdx];
+<a class="jxr_linenumber" name="280" href="#280">280</a>       <strong class="jxr_keyword">if</strong> (val &lt; (count - nodesToRetrieve))
+<a class="jxr_linenumber" name="281" href="#281">281</a>       {
+<a class="jxr_linenumber" name="282" href="#282">282</a>         list[val] = val;
+<a class="jxr_linenumber" name="283" href="#283">283</a>       }
+<a class="jxr_linenumber" name="284" href="#284">284</a>       list[listIdx] = listIdx;
+<a class="jxr_linenumber" name="285" href="#285">285</a>     }
+<a class="jxr_linenumber" name="286" href="#286">286</a>   }
+<a class="jxr_linenumber" name="287" href="#287">287</a> 
+<a class="jxr_linenumber" name="288" href="#288">288</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> choose(<strong class="jxr_keyword">int</strong> nodesToRetrieve, <strong class="jxr_keyword">int</strong> currentCluster,
+<a class="jxr_linenumber" name="289" href="#289">289</a>       <strong class="jxr_keyword">int</strong> remainingNodes, ArrayList&lt;HashMap&gt; nodeData)
+<a class="jxr_linenumber" name="290" href="#290">290</a>   {
+<a class="jxr_linenumber" name="291" href="#291">291</a>     Integer[] list = (Integer[]) clusters[currentCluster].get(<span class="jxr_string">"list"</span>);
+<a class="jxr_linenumber" name="292" href="#292">292</a>     Integer count = (Integer) clusters[currentCluster].get(<span class="jxr_string">"count"</span>);
+<a class="jxr_linenumber" name="293" href="#293">293</a> 
+<a class="jxr_linenumber" name="294" href="#294">294</a>     <strong class="jxr_keyword">int</strong> maxIdx;
+<a class="jxr_linenumber" name="295" href="#295">295</a>     <strong class="jxr_keyword">int</strong> randNode;
+<a class="jxr_linenumber" name="296" href="#296">296</a>     <strong class="jxr_keyword">int</strong> chosen;
+<a class="jxr_linenumber" name="297" href="#297">297</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> nodeIdx = 0; nodeIdx &lt; nodesToRetrieve; nodeIdx++)
+<a class="jxr_linenumber" name="298" href="#298">298</a>     {
+<a class="jxr_linenumber" name="299" href="#299">299</a>       maxIdx = count - nodeIdx - 1;
+<a class="jxr_linenumber" name="300" href="#300">300</a>       randNode = ran.nextInt(maxIdx + 1);
+<a class="jxr_linenumber" name="301" href="#301">301</a>       <em class="jxr_comment">// swap</em>
+<a class="jxr_linenumber" name="302" href="#302">302</a>       chosen = list[randNode];
+<a class="jxr_linenumber" name="303" href="#303">303</a>       list[randNode] = list[maxIdx];
+<a class="jxr_linenumber" name="304" href="#304">304</a>       list[maxIdx] = chosen;
+<a class="jxr_linenumber" name="305" href="#305">305</a>       <em class="jxr_comment">// add the remaining nodes so we can find the node data when we are done</em>
+<a class="jxr_linenumber" name="306" href="#306">306</a>       nodeData.add(nodes[remainingNodes + chosen]);
+<a class="jxr_linenumber" name="307" href="#307">307</a>     }
+<a class="jxr_linenumber" name="308" href="#308">308</a>   }
+<a class="jxr_linenumber" name="309" href="#309">309</a> 
+<a class="jxr_linenumber" name="310" href="#310">310</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="311" href="#311">311</a> <em class="jxr_javadoccomment">   * @param objKey</em>
+<a class="jxr_linenumber" name="312" href="#312">312</a> <em class="jxr_javadoccomment">   * @return</em>
+<a class="jxr_linenumber" name="313" href="#313">313</a> <em class="jxr_javadoccomment">   * @throws com.targetnode.data.locator.Exception</em>
+<a class="jxr_linenumber" name="314" href="#314">314</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="315" href="#315">315</a>   <strong class="jxr_keyword">public</strong> ArrayList&lt;HashMap&gt; findNodes(String objKey) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="316" href="#316">316</a>   {
+<a class="jxr_linenumber" name="317" href="#317">317</a>     <strong class="jxr_keyword">return</strong> findNode(objKey);
+<a class="jxr_linenumber" name="318" href="#318">318</a>   }
+<a class="jxr_linenumber" name="319" href="#319">319</a> 
+<a class="jxr_linenumber" name="320" href="#320">320</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getReplicationDegree()
+<a class="jxr_linenumber" name="321" href="#321">321</a>   {
+<a class="jxr_linenumber" name="322" href="#322">322</a>     <strong class="jxr_keyword">return</strong> replicationDegree;
+<a class="jxr_linenumber" name="323" href="#323">323</a>   }
+<a class="jxr_linenumber" name="324" href="#324">324</a> 
+<a class="jxr_linenumber" name="325" href="#325">325</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getTotalNodes()
+<a class="jxr_linenumber" name="326" href="#326">326</a>   {
+<a class="jxr_linenumber" name="327" href="#327">327</a>     <strong class="jxr_keyword">return</strong> totalNodes;
+<a class="jxr_linenumber" name="328" href="#328">328</a>   }
+<a class="jxr_linenumber" name="329" href="#329">329</a> 
+<a class="jxr_linenumber" name="330" href="#330">330</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> drawWHG(<strong class="jxr_keyword">int</strong> replicas, <strong class="jxr_keyword">int</strong> disksInCurrentCluster, <strong class="jxr_keyword">int</strong> totalDisks,
+<a class="jxr_linenumber" name="331" href="#331">331</a>       <strong class="jxr_keyword">int</strong> weight)
+<a class="jxr_linenumber" name="332" href="#332">332</a>   {
+<a class="jxr_linenumber" name="333" href="#333">333</a>     <strong class="jxr_keyword">int</strong> found = 0;
+<a class="jxr_linenumber" name="334" href="#334">334</a>     <strong class="jxr_keyword">float</strong> z;
+<a class="jxr_linenumber" name="335" href="#335">335</a>     <strong class="jxr_keyword">float</strong> prob;
+<a class="jxr_linenumber" name="336" href="#336">336</a>     <strong class="jxr_keyword">int</strong> ranInt;
+<a class="jxr_linenumber" name="337" href="#337">337</a> 
+<a class="jxr_linenumber" name="338" href="#338">338</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; replicas; i++)
+<a class="jxr_linenumber" name="339" href="#339">339</a>     {
+<a class="jxr_linenumber" name="340" href="#340">340</a>       <strong class="jxr_keyword">if</strong> (totalDisks != 0)
+<a class="jxr_linenumber" name="341" href="#341">341</a>       {
+<a class="jxr_linenumber" name="342" href="#342">342</a>         ranInt = ran.nextInt((<strong class="jxr_keyword">int</strong>) (ranMax + 1));
+<a class="jxr_linenumber" name="343" href="#343">343</a>         z = ((<strong class="jxr_keyword">float</strong>) ranInt / ranMax);
+<a class="jxr_linenumber" name="344" href="#344">344</a>         prob = ((<strong class="jxr_keyword">float</strong>) disksInCurrentCluster / (<strong class="jxr_keyword">float</strong>) totalDisks);
+<a class="jxr_linenumber" name="345" href="#345">345</a>         <strong class="jxr_keyword">if</strong> (z &lt;= prob)
+<a class="jxr_linenumber" name="346" href="#346">346</a>         {
+<a class="jxr_linenumber" name="347" href="#347">347</a>           found++;
+<a class="jxr_linenumber" name="348" href="#348">348</a>           disksInCurrentCluster -= weight;
+<a class="jxr_linenumber" name="349" href="#349">349</a>         }
+<a class="jxr_linenumber" name="350" href="#350">350</a>         totalDisks -= weight;
+<a class="jxr_linenumber" name="351" href="#351">351</a>       }
+<a class="jxr_linenumber" name="352" href="#352">352</a>     }
+<a class="jxr_linenumber" name="353" href="#353">353</a>     <strong class="jxr_keyword">return</strong> found;
+<a class="jxr_linenumber" name="354" href="#354">354</a>   }
+<a class="jxr_linenumber" name="355" href="#355">355</a> }
 </pre>
 <hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
 </html>

Modified: incubator/helix/site-content/xref/org/apache/helix/tools/package-frame.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/tools/package-frame.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/tools/package-frame.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/tools/package-frame.html Wed Nov 21 21:29:07 2012
@@ -3,7 +3,7 @@
 <html xml:lang="en" lang="en">
 	<head>
 		<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
-		<title>Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.tools</title>
+		<title>Apache Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.tools</title>
 		<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" />
 	</head>
 	<body>

Modified: incubator/helix/site-content/xref/org/apache/helix/tools/package-summary.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/tools/package-summary.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/tools/package-summary.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/tools/package-summary.html Wed Nov 21 21:29:07 2012
@@ -3,7 +3,7 @@
 <html xml:lang="en" lang="en">
 	<head>
 		<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
-		<title>Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.tools</title>
+		<title>Apache Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.tools</title>
 		<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" />
 	</head>
 	<body>

Modified: incubator/helix/site-content/xref/org/apache/helix/util/package-frame.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/util/package-frame.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/util/package-frame.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/util/package-frame.html Wed Nov 21 21:29:07 2012
@@ -3,7 +3,7 @@
 <html xml:lang="en" lang="en">
 	<head>
 		<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
-		<title>Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.util</title>
+		<title>Apache Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.util</title>
 		<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" />
 	</head>
 	<body>

Modified: incubator/helix/site-content/xref/org/apache/helix/util/package-summary.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/util/package-summary.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/util/package-summary.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/util/package-summary.html Wed Nov 21 21:29:07 2012
@@ -3,7 +3,7 @@
 <html xml:lang="en" lang="en">
 	<head>
 		<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
-		<title>Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.util</title>
+		<title>Apache Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.util</title>
 		<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" />
 	</head>
 	<body>

Modified: incubator/helix/site-content/xref/org/apache/helix/webapp/package-frame.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/webapp/package-frame.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/webapp/package-frame.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/webapp/package-frame.html Wed Nov 21 21:29:07 2012
@@ -3,7 +3,7 @@
 <html xml:lang="en" lang="en">
 	<head>
 		<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
-		<title>Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.webapp</title>
+		<title>Apache Helix 0.6-incubating-SNAPSHOT Reference Package org.apache.helix.webapp</title>
 		<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="style" />
 	</head>
 	<body>

Modified: incubator/helix/site-content/xref/org/apache/helix/webapp/package-summary.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/webapp/package-summary.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/webapp/package-summary.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/webapp/package-summary.html Wed Nov 21 21:29:07 2012
@@ -3,7 +3,7 @@
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