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From ol...@apache.org
Subject svn commit: r1412308 [37/42] - 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/manager/zk/ZKUtil.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKUtil.html?rev=1412308&r1=1412307&r2=1412308&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKUtil.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKUtil.html Wed Nov 21 21:29:07 2012
@@ -58,313 +58,309 @@
 <a class="jxr_linenumber" name="48" href="#48">48</a>      {
 <a class="jxr_linenumber" name="49" href="#49">49</a>        <strong class="jxr_keyword">return</strong> false;
 <a class="jxr_linenumber" name="50" href="#50">50</a>      }
-<a class="jxr_linenumber" name="51" href="#51">51</a>  
-<a class="jxr_linenumber" name="52" href="#52">52</a>      <strong class="jxr_keyword">boolean</strong> isValid =
-<a class="jxr_linenumber" name="53" href="#53">53</a>          zkClient.exists(PropertyPathConfig.getPath(PropertyType.IDEALSTATES, clusterName))
-<a class="jxr_linenumber" name="54" href="#54">54</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.CONFIGS,
-<a class="jxr_linenumber" name="55" href="#55">55</a>                                                            clusterName,
-<a class="jxr_linenumber" name="56" href="#56">56</a>                                                            ConfigScopeProperty.CLUSTER.toString(),
-<a class="jxr_linenumber" name="57" href="#57">57</a>                                                            clusterName))
-<a class="jxr_linenumber" name="58" href="#58">58</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.CONFIGS,
-<a class="jxr_linenumber" name="59" href="#59">59</a>                                                            clusterName,
-<a class="jxr_linenumber" name="60" href="#60">60</a>                                                            ConfigScopeProperty.PARTICIPANT.toString()))
-<a class="jxr_linenumber" name="61" href="#61">61</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.CONFIGS,
-<a class="jxr_linenumber" name="62" href="#62">62</a>                                                            clusterName,
-<a class="jxr_linenumber" name="63" href="#63">63</a>                                                            ConfigScopeProperty.RESOURCE.toString()))
-<a class="jxr_linenumber" name="64" href="#64">64</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.PROPERTYSTORE,
-<a class="jxr_linenumber" name="65" href="#65">65</a>                                                            clusterName))
-<a class="jxr_linenumber" name="66" href="#66">66</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.LIVEINSTANCES,
-<a class="jxr_linenumber" name="67" href="#67">67</a>                                                            clusterName))
-<a class="jxr_linenumber" name="68" href="#68">68</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.INSTANCES,
-<a class="jxr_linenumber" name="69" href="#69">69</a>                                                            clusterName))
-<a class="jxr_linenumber" name="70" href="#70">70</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.EXTERNALVIEW,
-<a class="jxr_linenumber" name="71" href="#71">71</a>                                                            clusterName))
-<a class="jxr_linenumber" name="72" href="#72">72</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.CONTROLLER,
-<a class="jxr_linenumber" name="73" href="#73">73</a>                                                            clusterName))
-<a class="jxr_linenumber" name="74" href="#74">74</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.STATEMODELDEFS,
-<a class="jxr_linenumber" name="75" href="#75">75</a>                                                            clusterName))
-<a class="jxr_linenumber" name="76" href="#76">76</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.MESSAGES_CONTROLLER,
-<a class="jxr_linenumber" name="77" href="#77">77</a>                                                            clusterName))
-<a class="jxr_linenumber" name="78" href="#78">78</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.ERRORS_CONTROLLER,
-<a class="jxr_linenumber" name="79" href="#79">79</a>                                                            clusterName))
-<a class="jxr_linenumber" name="80" href="#80">80</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.STATUSUPDATES_CONTROLLER,
-<a class="jxr_linenumber" name="81" href="#81">81</a>                                                            clusterName))
-<a class="jxr_linenumber" name="82" href="#82">82</a>              &amp;&amp; zkClient.exists(PropertyPathConfig.getPath(PropertyType.HISTORY,
-<a class="jxr_linenumber" name="83" href="#83">83</a>                                                            clusterName));
-<a class="jxr_linenumber" name="84" href="#84">84</a>  
-<a class="jxr_linenumber" name="85" href="#85">85</a>      <strong class="jxr_keyword">return</strong> isValid;
-<a class="jxr_linenumber" name="86" href="#86">86</a>    }
-<a class="jxr_linenumber" name="87" href="#87">87</a>  
-<a class="jxr_linenumber" name="88" href="#88">88</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="89" href="#89">89</a>                                      String parentPath,
-<a class="jxr_linenumber" name="90" href="#90">90</a>                                      List&lt;ZNRecord&gt; list)
-<a class="jxr_linenumber" name="91" href="#91">91</a>    {
-<a class="jxr_linenumber" name="92" href="#92">92</a>      client.createPersistent(parentPath, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="93" href="#93">93</a>      <strong class="jxr_keyword">if</strong> (list != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="94" href="#94">94</a>      {
-<a class="jxr_linenumber" name="95" href="#95">95</a>        <strong class="jxr_keyword">for</strong> (ZNRecord record : list)
-<a class="jxr_linenumber" name="96" href="#96">96</a>        {
-<a class="jxr_linenumber" name="97" href="#97">97</a>          createChildren(client, parentPath, record);
-<a class="jxr_linenumber" name="98" href="#98">98</a>        }
-<a class="jxr_linenumber" name="99" href="#99">99</a>      }
-<a class="jxr_linenumber" name="100" href="#100">100</a>   }
-<a class="jxr_linenumber" name="101" href="#101">101</a> 
-<a class="jxr_linenumber" name="102" href="#102">102</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="103" href="#103">103</a>                                     String parentPath,
-<a class="jxr_linenumber" name="104" href="#104">104</a>                                     <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> nodeRecord)
-<a class="jxr_linenumber" name="105" href="#105">105</a>   {
-<a class="jxr_linenumber" name="106" href="#106">106</a>     client.createPersistent(parentPath, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="107" href="#107">107</a> 
-<a class="jxr_linenumber" name="108" href="#108">108</a>     String id = nodeRecord.getId();
-<a class="jxr_linenumber" name="109" href="#109">109</a>     String temp = parentPath + <span class="jxr_string">"/"</span> + id;
-<a class="jxr_linenumber" name="110" href="#110">110</a>     client.createPersistent(temp, nodeRecord);
-<a class="jxr_linenumber" name="111" href="#111">111</a>   }
-<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> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> dropChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client, String parentPath, List&lt;ZNRecord&gt; list)
-<a class="jxr_linenumber" name="114" href="#114">114</a>   {
-<a class="jxr_linenumber" name="115" href="#115">115</a>     <em class="jxr_comment">// TODO: check if parentPath exists</em>
-<a class="jxr_linenumber" name="116" href="#116">116</a>     <strong class="jxr_keyword">if</strong> (list != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="117" href="#117">117</a>     {
-<a class="jxr_linenumber" name="118" href="#118">118</a>       <strong class="jxr_keyword">for</strong> (ZNRecord record : list)
-<a class="jxr_linenumber" name="119" href="#119">119</a>       {
-<a class="jxr_linenumber" name="120" href="#120">120</a>         dropChildren(client, parentPath, record);
-<a class="jxr_linenumber" name="121" href="#121">121</a>       }
-<a class="jxr_linenumber" name="122" href="#122">122</a>     }
-<a class="jxr_linenumber" name="123" href="#123">123</a>   }
-<a class="jxr_linenumber" name="124" href="#124">124</a> 
-<a class="jxr_linenumber" name="125" href="#125">125</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> dropChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client, String parentPath, <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> nodeRecord)
-<a class="jxr_linenumber" name="126" href="#126">126</a>   {
-<a class="jxr_linenumber" name="127" href="#127">127</a>     <em class="jxr_comment">// TODO: check if parentPath exists</em>
-<a class="jxr_linenumber" name="128" href="#128">128</a>     String id = nodeRecord.getId();
-<a class="jxr_linenumber" name="129" href="#129">129</a>     String temp = parentPath + <span class="jxr_string">"/"</span> + id;
-<a class="jxr_linenumber" name="130" href="#130">130</a>     client.deleteRecursive(temp);
-<a class="jxr_linenumber" name="131" href="#131">131</a>   }
-<a class="jxr_linenumber" name="132" href="#132">132</a> 
-<a class="jxr_linenumber" name="133" href="#133">133</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> List&lt;ZNRecord&gt; getChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client, String path)
-<a class="jxr_linenumber" name="134" href="#134">134</a>   {
-<a class="jxr_linenumber" name="135" href="#135">135</a>     <em class="jxr_comment">// parent watch will be set by zkClient</em>
-<a class="jxr_linenumber" name="136" href="#136">136</a>     List&lt;String&gt; children = client.getChildren(path);
-<a class="jxr_linenumber" name="137" href="#137">137</a>     <strong class="jxr_keyword">if</strong> (children == <strong class="jxr_keyword">null</strong> || children.size() == 0)
-<a class="jxr_linenumber" name="138" href="#138">138</a>     {
-<a class="jxr_linenumber" name="139" href="#139">139</a>       <strong class="jxr_keyword">return</strong> Collections.emptyList();
-<a class="jxr_linenumber" name="140" href="#140">140</a>     }
-<a class="jxr_linenumber" name="141" href="#141">141</a> 
-<a class="jxr_linenumber" name="142" href="#142">142</a>     List&lt;ZNRecord&gt; childRecords = <strong class="jxr_keyword">new</strong> ArrayList&lt;ZNRecord&gt;();
-<a class="jxr_linenumber" name="143" href="#143">143</a>     <strong class="jxr_keyword">for</strong> (String child : children)
-<a class="jxr_linenumber" name="144" href="#144">144</a>     {
-<a class="jxr_linenumber" name="145" href="#145">145</a>       String childPath = path + <span class="jxr_string">"/"</span> + child;
-<a class="jxr_linenumber" name="146" href="#146">146</a>       Stat newStat = <strong class="jxr_keyword">new</strong> Stat();
-<a class="jxr_linenumber" name="147" href="#147">147</a>       <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record = client.readDataAndStat(childPath, newStat, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="148" href="#148">148</a>       <strong class="jxr_keyword">if</strong> (record != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="149" href="#149">149</a>       {
-<a class="jxr_linenumber" name="150" href="#150">150</a>         record.setVersion(newStat.getVersion());
-<a class="jxr_linenumber" name="151" href="#151">151</a>         record.setCreationTime(newStat.getCtime());
-<a class="jxr_linenumber" name="152" href="#152">152</a>         record.setModifiedTime(newStat.getMtime());
-<a class="jxr_linenumber" name="153" href="#153">153</a>         childRecords.add(record);
-<a class="jxr_linenumber" name="154" href="#154">154</a>       }
-<a class="jxr_linenumber" name="155" href="#155">155</a>     }
-<a class="jxr_linenumber" name="156" href="#156">156</a>     <strong class="jxr_keyword">return</strong> childRecords;
-<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>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> updateIfExists(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="160" href="#160">160</a>                                     String path,
-<a class="jxr_linenumber" name="161" href="#161">161</a>                                     <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
-<a class="jxr_linenumber" name="162" href="#162">162</a>                                     <strong class="jxr_keyword">boolean</strong> mergeOnUpdate)
-<a class="jxr_linenumber" name="163" href="#163">163</a>   {
-<a class="jxr_linenumber" name="164" href="#164">164</a>     <strong class="jxr_keyword">if</strong> (client.exists(path))
-<a class="jxr_linenumber" name="165" href="#165">165</a>     {
-<a class="jxr_linenumber" name="166" href="#166">166</a>       DataUpdater&lt;Object&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;Object&gt;()
-<a class="jxr_linenumber" name="167" href="#167">167</a>       {
-<a class="jxr_linenumber" name="168" href="#168">168</a>         @Override
-<a class="jxr_linenumber" name="169" href="#169">169</a>         <strong class="jxr_keyword">public</strong> Object update(Object currentData)
-<a class="jxr_linenumber" name="170" href="#170">170</a>         {
-<a class="jxr_linenumber" name="171" href="#171">171</a>           <strong class="jxr_keyword">return</strong> record;
-<a class="jxr_linenumber" name="172" href="#172">172</a>         }
-<a class="jxr_linenumber" name="173" href="#173">173</a>       };
-<a class="jxr_linenumber" name="174" href="#174">174</a>       client.updateDataSerialized(path, updater);
-<a class="jxr_linenumber" name="175" href="#175">175</a>     }
-<a class="jxr_linenumber" name="176" href="#176">176</a>   }
-<a class="jxr_linenumber" name="177" href="#177">177</a> 
-<a class="jxr_linenumber" name="178" href="#178">178</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createOrUpdate(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="179" href="#179">179</a>                                     String path,
-<a class="jxr_linenumber" name="180" href="#180">180</a>                                     <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
-<a class="jxr_linenumber" name="181" href="#181">181</a>                                     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> persistent,
-<a class="jxr_linenumber" name="182" href="#182">182</a>                                     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> mergeOnUpdate)
-<a class="jxr_linenumber" name="183" href="#183">183</a>   {
-<a class="jxr_linenumber" name="184" href="#184">184</a>     <strong class="jxr_keyword">int</strong> retryCount = 0;
-<a class="jxr_linenumber" name="185" href="#185">185</a>     <strong class="jxr_keyword">while</strong> (retryCount &lt; RETRYLIMIT)
-<a class="jxr_linenumber" name="186" href="#186">186</a>     {
-<a class="jxr_linenumber" name="187" href="#187">187</a>       <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="188" href="#188">188</a>       {
-<a class="jxr_linenumber" name="189" href="#189">189</a>         <strong class="jxr_keyword">if</strong> (client.exists(path))
-<a class="jxr_linenumber" name="190" href="#190">190</a>         {
-<a class="jxr_linenumber" name="191" href="#191">191</a>           DataUpdater&lt;ZNRecord&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;ZNRecord&gt;()
-<a class="jxr_linenumber" name="192" href="#192">192</a>           {
-<a class="jxr_linenumber" name="193" href="#193">193</a>             @Override
-<a class="jxr_linenumber" name="194" href="#194">194</a>             <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> update(<a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> currentData)
-<a class="jxr_linenumber" name="195" href="#195">195</a>             {
-<a class="jxr_linenumber" name="196" href="#196">196</a>               <strong class="jxr_keyword">if</strong> (currentData != <strong class="jxr_keyword">null</strong> &amp;&amp; mergeOnUpdate)
-<a class="jxr_linenumber" name="197" href="#197">197</a>               {
-<a class="jxr_linenumber" name="198" href="#198">198</a>                 currentData.merge(record);
-<a class="jxr_linenumber" name="199" href="#199">199</a>                 <strong class="jxr_keyword">return</strong> currentData;
-<a class="jxr_linenumber" name="200" href="#200">200</a>               }
-<a class="jxr_linenumber" name="201" href="#201">201</a>               <strong class="jxr_keyword">return</strong> record;
-<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>           client.updateDataSerialized(path, updater);
-<a class="jxr_linenumber" name="205" href="#205">205</a>         }
-<a class="jxr_linenumber" name="206" href="#206">206</a>         <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="207" href="#207">207</a>         {
-<a class="jxr_linenumber" name="208" href="#208">208</a>           CreateMode mode = (persistent) ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL;
-<a class="jxr_linenumber" name="209" href="#209">209</a>           <strong class="jxr_keyword">if</strong> (record.getDeltaList().size() &gt; 0)
-<a class="jxr_linenumber" name="210" href="#210">210</a>           {
-<a class="jxr_linenumber" name="211" href="#211">211</a>             <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> value = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a>(record.getId());
-<a class="jxr_linenumber" name="212" href="#212">212</a>             value.merge(record);
-<a class="jxr_linenumber" name="213" href="#213">213</a>             client.create(path, value, mode);
+<a class="jxr_linenumber" name="51" href="#51">51</a>      ArrayList&lt;String&gt; requiredPaths = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
+<a class="jxr_linenumber" name="52" href="#52">52</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.IDEALSTATES, clusterName));
+<a class="jxr_linenumber" name="53" href="#53">53</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.CONFIGS,
+<a class="jxr_linenumber" name="54" href="#54">54</a>                                                   clusterName,
+<a class="jxr_linenumber" name="55" href="#55">55</a>                                                   ConfigScopeProperty.CLUSTER.toString(),
+<a class="jxr_linenumber" name="56" href="#56">56</a>                                                   clusterName));
+<a class="jxr_linenumber" name="57" href="#57">57</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.CONFIGS,
+<a class="jxr_linenumber" name="58" href="#58">58</a>                                                   clusterName, 
+<a class="jxr_linenumber" name="59" href="#59">59</a>                                                   ConfigScopeProperty.PARTICIPANT.toString()));
+<a class="jxr_linenumber" name="60" href="#60">60</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.CONFIGS,
+<a class="jxr_linenumber" name="61" href="#61">61</a>                                                   clusterName, 
+<a class="jxr_linenumber" name="62" href="#62">62</a>                                                   ConfigScopeProperty.RESOURCE.toString()));
+<a class="jxr_linenumber" name="63" href="#63">63</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.PROPERTYSTORE,clusterName));
+<a class="jxr_linenumber" name="64" href="#64">64</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.LIVEINSTANCES,clusterName));
+<a class="jxr_linenumber" name="65" href="#65">65</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.INSTANCES,clusterName));
+<a class="jxr_linenumber" name="66" href="#66">66</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.EXTERNALVIEW,clusterName));
+<a class="jxr_linenumber" name="67" href="#67">67</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.CONTROLLER, clusterName));
+<a class="jxr_linenumber" name="68" href="#68">68</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.STATEMODELDEFS,clusterName));
+<a class="jxr_linenumber" name="69" href="#69">69</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.MESSAGES_CONTROLLER, clusterName));
+<a class="jxr_linenumber" name="70" href="#70">70</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.ERRORS_CONTROLLER, clusterName));
+<a class="jxr_linenumber" name="71" href="#71">71</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.STATUSUPDATES_CONTROLLER, clusterName));
+<a class="jxr_linenumber" name="72" href="#72">72</a>      requiredPaths.add(PropertyPathConfig.getPath(PropertyType.HISTORY,clusterName));
+<a class="jxr_linenumber" name="73" href="#73">73</a>      <strong class="jxr_keyword">boolean</strong> isValid =<strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="74" href="#74">74</a>      
+<a class="jxr_linenumber" name="75" href="#75">75</a>      <strong class="jxr_keyword">for</strong>(String path:requiredPaths){
+<a class="jxr_linenumber" name="76" href="#76">76</a>        <strong class="jxr_keyword">if</strong>(!zkClient.exists(path)){
+<a class="jxr_linenumber" name="77" href="#77">77</a>          isValid =false;
+<a class="jxr_linenumber" name="78" href="#78">78</a>          logger.error(<span class="jxr_string">"Invalid cluster setup, missing znode path: "</span>+path);
+<a class="jxr_linenumber" name="79" href="#79">79</a>        }
+<a class="jxr_linenumber" name="80" href="#80">80</a>      }
+<a class="jxr_linenumber" name="81" href="#81">81</a>      <strong class="jxr_keyword">return</strong> isValid;
+<a class="jxr_linenumber" name="82" href="#82">82</a>    }
+<a class="jxr_linenumber" name="83" href="#83">83</a>  
+<a class="jxr_linenumber" name="84" href="#84">84</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="85" href="#85">85</a>                                      String parentPath,
+<a class="jxr_linenumber" name="86" href="#86">86</a>                                      List&lt;ZNRecord&gt; list)
+<a class="jxr_linenumber" name="87" href="#87">87</a>    {
+<a class="jxr_linenumber" name="88" href="#88">88</a>      client.createPersistent(parentPath, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="89" href="#89">89</a>      <strong class="jxr_keyword">if</strong> (list != <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="90" href="#90">90</a>      {
+<a class="jxr_linenumber" name="91" href="#91">91</a>        <strong class="jxr_keyword">for</strong> (ZNRecord record : list)
+<a class="jxr_linenumber" name="92" href="#92">92</a>        {
+<a class="jxr_linenumber" name="93" href="#93">93</a>          createChildren(client, parentPath, record);
+<a class="jxr_linenumber" name="94" href="#94">94</a>        }
+<a class="jxr_linenumber" name="95" href="#95">95</a>      }
+<a class="jxr_linenumber" name="96" href="#96">96</a>    }
+<a class="jxr_linenumber" name="97" href="#97">97</a>  
+<a class="jxr_linenumber" name="98" href="#98">98</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="99" href="#99">99</a>                                      String parentPath,
+<a class="jxr_linenumber" name="100" href="#100">100</a>                                     <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> nodeRecord)
+<a class="jxr_linenumber" name="101" href="#101">101</a>   {
+<a class="jxr_linenumber" name="102" href="#102">102</a>     client.createPersistent(parentPath, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="103" href="#103">103</a> 
+<a class="jxr_linenumber" name="104" href="#104">104</a>     String id = nodeRecord.getId();
+<a class="jxr_linenumber" name="105" href="#105">105</a>     String temp = parentPath + <span class="jxr_string">"/"</span> + id;
+<a class="jxr_linenumber" name="106" href="#106">106</a>     client.createPersistent(temp, nodeRecord);
+<a class="jxr_linenumber" name="107" href="#107">107</a>   }
+<a class="jxr_linenumber" name="108" href="#108">108</a> 
+<a class="jxr_linenumber" name="109" href="#109">109</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> dropChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client, String parentPath, List&lt;ZNRecord&gt; list)
+<a class="jxr_linenumber" name="110" href="#110">110</a>   {
+<a class="jxr_linenumber" name="111" href="#111">111</a>     <em class="jxr_comment">// TODO: check if parentPath exists</em>
+<a class="jxr_linenumber" name="112" href="#112">112</a>     <strong class="jxr_keyword">if</strong> (list != <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="113" href="#113">113</a>     {
+<a class="jxr_linenumber" name="114" href="#114">114</a>       <strong class="jxr_keyword">for</strong> (ZNRecord record : list)
+<a class="jxr_linenumber" name="115" href="#115">115</a>       {
+<a class="jxr_linenumber" name="116" href="#116">116</a>         dropChildren(client, parentPath, record);
+<a class="jxr_linenumber" name="117" href="#117">117</a>       }
+<a class="jxr_linenumber" name="118" href="#118">118</a>     }
+<a class="jxr_linenumber" name="119" href="#119">119</a>   }
+<a class="jxr_linenumber" name="120" href="#120">120</a> 
+<a class="jxr_linenumber" name="121" href="#121">121</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> dropChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client, String parentPath, <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> nodeRecord)
+<a class="jxr_linenumber" name="122" href="#122">122</a>   {
+<a class="jxr_linenumber" name="123" href="#123">123</a>     <em class="jxr_comment">// TODO: check if parentPath exists</em>
+<a class="jxr_linenumber" name="124" href="#124">124</a>     String id = nodeRecord.getId();
+<a class="jxr_linenumber" name="125" href="#125">125</a>     String temp = parentPath + <span class="jxr_string">"/"</span> + id;
+<a class="jxr_linenumber" name="126" href="#126">126</a>     client.deleteRecursive(temp);
+<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">public</strong> <strong class="jxr_keyword">static</strong> List&lt;ZNRecord&gt; getChildren(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client, String path)
+<a class="jxr_linenumber" name="130" href="#130">130</a>   {
+<a class="jxr_linenumber" name="131" href="#131">131</a>     <em class="jxr_comment">// parent watch will be set by zkClient</em>
+<a class="jxr_linenumber" name="132" href="#132">132</a>     List&lt;String&gt; children = client.getChildren(path);
+<a class="jxr_linenumber" name="133" href="#133">133</a>     <strong class="jxr_keyword">if</strong> (children == <strong class="jxr_keyword">null</strong> || children.size() == 0)
+<a class="jxr_linenumber" name="134" href="#134">134</a>     {
+<a class="jxr_linenumber" name="135" href="#135">135</a>       <strong class="jxr_keyword">return</strong> Collections.emptyList();
+<a class="jxr_linenumber" name="136" href="#136">136</a>     }
+<a class="jxr_linenumber" name="137" href="#137">137</a> 
+<a class="jxr_linenumber" name="138" href="#138">138</a>     List&lt;ZNRecord&gt; childRecords = <strong class="jxr_keyword">new</strong> ArrayList&lt;ZNRecord&gt;();
+<a class="jxr_linenumber" name="139" href="#139">139</a>     <strong class="jxr_keyword">for</strong> (String child : children)
+<a class="jxr_linenumber" name="140" href="#140">140</a>     {
+<a class="jxr_linenumber" name="141" href="#141">141</a>       String childPath = path + <span class="jxr_string">"/"</span> + child;
+<a class="jxr_linenumber" name="142" href="#142">142</a>       Stat newStat = <strong class="jxr_keyword">new</strong> Stat();
+<a class="jxr_linenumber" name="143" href="#143">143</a>       <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record = client.readDataAndStat(childPath, newStat, <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="144" href="#144">144</a>       <strong class="jxr_keyword">if</strong> (record != <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="145" href="#145">145</a>       {
+<a class="jxr_linenumber" name="146" href="#146">146</a>         record.setVersion(newStat.getVersion());
+<a class="jxr_linenumber" name="147" href="#147">147</a>         record.setCreationTime(newStat.getCtime());
+<a class="jxr_linenumber" name="148" href="#148">148</a>         record.setModifiedTime(newStat.getMtime());
+<a class="jxr_linenumber" name="149" href="#149">149</a>         childRecords.add(record);
+<a class="jxr_linenumber" name="150" href="#150">150</a>       }
+<a class="jxr_linenumber" name="151" href="#151">151</a>     }
+<a class="jxr_linenumber" name="152" href="#152">152</a>     <strong class="jxr_keyword">return</strong> childRecords;
+<a class="jxr_linenumber" name="153" href="#153">153</a>   }
+<a class="jxr_linenumber" name="154" href="#154">154</a> 
+<a class="jxr_linenumber" name="155" href="#155">155</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> updateIfExists(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="156" href="#156">156</a>                                     String path,
+<a class="jxr_linenumber" name="157" href="#157">157</a>                                     <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
+<a class="jxr_linenumber" name="158" href="#158">158</a>                                     <strong class="jxr_keyword">boolean</strong> mergeOnUpdate)
+<a class="jxr_linenumber" name="159" href="#159">159</a>   {
+<a class="jxr_linenumber" name="160" href="#160">160</a>     <strong class="jxr_keyword">if</strong> (client.exists(path))
+<a class="jxr_linenumber" name="161" href="#161">161</a>     {
+<a class="jxr_linenumber" name="162" href="#162">162</a>       DataUpdater&lt;Object&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;Object&gt;()
+<a class="jxr_linenumber" name="163" href="#163">163</a>       {
+<a class="jxr_linenumber" name="164" href="#164">164</a>         @Override
+<a class="jxr_linenumber" name="165" href="#165">165</a>         <strong class="jxr_keyword">public</strong> Object update(Object currentData)
+<a class="jxr_linenumber" name="166" href="#166">166</a>         {
+<a class="jxr_linenumber" name="167" href="#167">167</a>           <strong class="jxr_keyword">return</strong> record;
+<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>       client.updateDataSerialized(path, updater);
+<a class="jxr_linenumber" name="171" href="#171">171</a>     }
+<a class="jxr_linenumber" name="172" href="#172">172</a>   }
+<a class="jxr_linenumber" name="173" href="#173">173</a> 
+<a class="jxr_linenumber" name="174" href="#174">174</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createOrUpdate(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="175" href="#175">175</a>                                     String path,
+<a class="jxr_linenumber" name="176" href="#176">176</a>                                     <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
+<a class="jxr_linenumber" name="177" href="#177">177</a>                                     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> persistent,
+<a class="jxr_linenumber" name="178" href="#178">178</a>                                     <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> mergeOnUpdate)
+<a class="jxr_linenumber" name="179" href="#179">179</a>   {
+<a class="jxr_linenumber" name="180" href="#180">180</a>     <strong class="jxr_keyword">int</strong> retryCount = 0;
+<a class="jxr_linenumber" name="181" href="#181">181</a>     <strong class="jxr_keyword">while</strong> (retryCount &lt; RETRYLIMIT)
+<a class="jxr_linenumber" name="182" href="#182">182</a>     {
+<a class="jxr_linenumber" name="183" href="#183">183</a>       <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="184" href="#184">184</a>       {
+<a class="jxr_linenumber" name="185" href="#185">185</a>         <strong class="jxr_keyword">if</strong> (client.exists(path))
+<a class="jxr_linenumber" name="186" href="#186">186</a>         {
+<a class="jxr_linenumber" name="187" href="#187">187</a>           DataUpdater&lt;ZNRecord&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;ZNRecord&gt;()
+<a class="jxr_linenumber" name="188" href="#188">188</a>           {
+<a class="jxr_linenumber" name="189" href="#189">189</a>             @Override
+<a class="jxr_linenumber" name="190" href="#190">190</a>             <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> update(<a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> currentData)
+<a class="jxr_linenumber" name="191" href="#191">191</a>             {
+<a class="jxr_linenumber" name="192" href="#192">192</a>               <strong class="jxr_keyword">if</strong> (currentData != <strong class="jxr_keyword">null</strong> &amp;&amp; mergeOnUpdate)
+<a class="jxr_linenumber" name="193" href="#193">193</a>               {
+<a class="jxr_linenumber" name="194" href="#194">194</a>                 currentData.merge(record);
+<a class="jxr_linenumber" name="195" href="#195">195</a>                 <strong class="jxr_keyword">return</strong> currentData;
+<a class="jxr_linenumber" name="196" href="#196">196</a>               }
+<a class="jxr_linenumber" name="197" href="#197">197</a>               <strong class="jxr_keyword">return</strong> record;
+<a class="jxr_linenumber" name="198" href="#198">198</a>             }
+<a class="jxr_linenumber" name="199" href="#199">199</a>           };
+<a class="jxr_linenumber" name="200" href="#200">200</a>           client.updateDataSerialized(path, updater);
+<a class="jxr_linenumber" name="201" href="#201">201</a>         }
+<a class="jxr_linenumber" name="202" href="#202">202</a>         <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="203" href="#203">203</a>         {
+<a class="jxr_linenumber" name="204" href="#204">204</a>           CreateMode mode = (persistent) ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL;
+<a class="jxr_linenumber" name="205" href="#205">205</a>           <strong class="jxr_keyword">if</strong> (record.getDeltaList().size() &gt; 0)
+<a class="jxr_linenumber" name="206" href="#206">206</a>           {
+<a class="jxr_linenumber" name="207" href="#207">207</a>             <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> value = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a>(record.getId());
+<a class="jxr_linenumber" name="208" href="#208">208</a>             value.merge(record);
+<a class="jxr_linenumber" name="209" href="#209">209</a>             client.create(path, value, mode);
+<a class="jxr_linenumber" name="210" href="#210">210</a>           }
+<a class="jxr_linenumber" name="211" href="#211">211</a>           <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="212" href="#212">212</a>           {
+<a class="jxr_linenumber" name="213" href="#213">213</a>             client.create(path, record, mode);
 <a class="jxr_linenumber" name="214" href="#214">214</a>           }
-<a class="jxr_linenumber" name="215" href="#215">215</a>           <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="216" href="#216">216</a>           {
-<a class="jxr_linenumber" name="217" href="#217">217</a>             client.create(path, record, mode);
-<a class="jxr_linenumber" name="218" href="#218">218</a>           }
-<a class="jxr_linenumber" name="219" href="#219">219</a>         }
-<a class="jxr_linenumber" name="220" href="#220">220</a>         <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="221" href="#221">221</a>       }
-<a class="jxr_linenumber" name="222" href="#222">222</a>       <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="223" href="#223">223</a>       {
-<a class="jxr_linenumber" name="224" href="#224">224</a>         retryCount = retryCount + 1;
-<a class="jxr_linenumber" name="225" href="#225">225</a>         logger.warn(<span class="jxr_string">"Exception trying to update "</span> + path + <span class="jxr_string">" Exception:"</span> + e.getMessage()
-<a class="jxr_linenumber" name="226" href="#226">226</a>             + <span class="jxr_string">". Will retry."</span>);
-<a class="jxr_linenumber" name="227" href="#227">227</a>       }
-<a class="jxr_linenumber" name="228" href="#228">228</a>     }
-<a class="jxr_linenumber" name="229" href="#229">229</a>   }
-<a class="jxr_linenumber" name="230" href="#230">230</a> 
-<a class="jxr_linenumber" name="231" href="#231">231</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> asyncCreateOrUpdate(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="232" href="#232">232</a>                                          String path,
-<a class="jxr_linenumber" name="233" href="#233">233</a>                                          <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
-<a class="jxr_linenumber" name="234" href="#234">234</a>                                          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> persistent,
-<a class="jxr_linenumber" name="235" href="#235">235</a>                                          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> mergeOnUpdate)
-<a class="jxr_linenumber" name="236" href="#236">236</a>   {
-<a class="jxr_linenumber" name="237" href="#237">237</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="238" href="#238">238</a>     {
-<a class="jxr_linenumber" name="239" href="#239">239</a>       <strong class="jxr_keyword">if</strong> (client.exists(path))
-<a class="jxr_linenumber" name="240" href="#240">240</a>       {
-<a class="jxr_linenumber" name="241" href="#241">241</a>         <strong class="jxr_keyword">if</strong> (mergeOnUpdate)
-<a class="jxr_linenumber" name="242" href="#242">242</a>         {
-<a class="jxr_linenumber" name="243" href="#243">243</a>           <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> curRecord = client.readData(path);
-<a class="jxr_linenumber" name="244" href="#244">244</a>           <strong class="jxr_keyword">if</strong> (curRecord != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="245" href="#245">245</a>           {
-<a class="jxr_linenumber" name="246" href="#246">246</a>             curRecord.merge(record);
-<a class="jxr_linenumber" name="247" href="#247">247</a>             client.asyncSetData(path, curRecord, -1, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="215" href="#215">215</a>         }
+<a class="jxr_linenumber" name="216" href="#216">216</a>         <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="217" href="#217">217</a>       }
+<a class="jxr_linenumber" name="218" href="#218">218</a>       <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="219" href="#219">219</a>       {
+<a class="jxr_linenumber" name="220" href="#220">220</a>         retryCount = retryCount + 1;
+<a class="jxr_linenumber" name="221" href="#221">221</a>         logger.warn(<span class="jxr_string">"Exception trying to update "</span> + path + <span class="jxr_string">" Exception:"</span> + e.getMessage()
+<a class="jxr_linenumber" name="222" href="#222">222</a>             + <span class="jxr_string">". Will retry."</span>);
+<a class="jxr_linenumber" name="223" href="#223">223</a>       }
+<a class="jxr_linenumber" name="224" href="#224">224</a>     }
+<a class="jxr_linenumber" name="225" href="#225">225</a>   }
+<a class="jxr_linenumber" name="226" href="#226">226</a> 
+<a class="jxr_linenumber" name="227" href="#227">227</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> asyncCreateOrUpdate(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="228" href="#228">228</a>                                          String path,
+<a class="jxr_linenumber" name="229" href="#229">229</a>                                          <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
+<a class="jxr_linenumber" name="230" href="#230">230</a>                                          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> persistent,
+<a class="jxr_linenumber" name="231" href="#231">231</a>                                          <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> mergeOnUpdate)
+<a class="jxr_linenumber" name="232" href="#232">232</a>   {
+<a class="jxr_linenumber" name="233" href="#233">233</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="234" href="#234">234</a>     {
+<a class="jxr_linenumber" name="235" href="#235">235</a>       <strong class="jxr_keyword">if</strong> (client.exists(path))
+<a class="jxr_linenumber" name="236" href="#236">236</a>       {
+<a class="jxr_linenumber" name="237" href="#237">237</a>         <strong class="jxr_keyword">if</strong> (mergeOnUpdate)
+<a class="jxr_linenumber" name="238" href="#238">238</a>         {
+<a class="jxr_linenumber" name="239" href="#239">239</a>           <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> curRecord = client.readData(path);
+<a class="jxr_linenumber" name="240" href="#240">240</a>           <strong class="jxr_keyword">if</strong> (curRecord != <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="241" href="#241">241</a>           {
+<a class="jxr_linenumber" name="242" href="#242">242</a>             curRecord.merge(record);
+<a class="jxr_linenumber" name="243" href="#243">243</a>             client.asyncSetData(path, curRecord, -1, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="244" href="#244">244</a>           }
+<a class="jxr_linenumber" name="245" href="#245">245</a>           <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="246" href="#246">246</a>           {
+<a class="jxr_linenumber" name="247" href="#247">247</a>             client.asyncSetData(path, record, -1, <strong class="jxr_keyword">null</strong>);
 <a class="jxr_linenumber" name="248" href="#248">248</a>           }
-<a class="jxr_linenumber" name="249" href="#249">249</a>           <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="250" href="#250">250</a>           {
-<a class="jxr_linenumber" name="251" href="#251">251</a>             client.asyncSetData(path, record, -1, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="252" href="#252">252</a>           }
+<a class="jxr_linenumber" name="249" href="#249">249</a>         }
+<a class="jxr_linenumber" name="250" href="#250">250</a>         <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="251" href="#251">251</a>         {
+<a class="jxr_linenumber" name="252" href="#252">252</a>           client.asyncSetData(path, record, -1, <strong class="jxr_keyword">null</strong>);
 <a class="jxr_linenumber" name="253" href="#253">253</a>         }
-<a class="jxr_linenumber" name="254" href="#254">254</a>         <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="255" href="#255">255</a>         {
-<a class="jxr_linenumber" name="256" href="#256">256</a>           client.asyncSetData(path, record, -1, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="257" href="#257">257</a>         }
-<a class="jxr_linenumber" name="258" href="#258">258</a>       }
-<a class="jxr_linenumber" name="259" href="#259">259</a>       <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="260" href="#260">260</a>       {
-<a class="jxr_linenumber" name="261" href="#261">261</a>         CreateMode mode = (persistent) ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL;
-<a class="jxr_linenumber" name="262" href="#262">262</a>         <strong class="jxr_keyword">if</strong> (record.getDeltaList().size() &gt; 0)
-<a class="jxr_linenumber" name="263" href="#263">263</a>         {
-<a class="jxr_linenumber" name="264" href="#264">264</a>           <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> newRecord = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a>(record.getId());
-<a class="jxr_linenumber" name="265" href="#265">265</a>           newRecord.merge(record);
-<a class="jxr_linenumber" name="266" href="#266">266</a>           client.create(path, <strong class="jxr_keyword">null</strong>, mode);
-<a class="jxr_linenumber" name="267" href="#267">267</a> 
-<a class="jxr_linenumber" name="268" href="#268">268</a>           client.asyncSetData(path, newRecord, -1, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="269" href="#269">269</a>         }
-<a class="jxr_linenumber" name="270" href="#270">270</a>         <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="271" href="#271">271</a>         {
-<a class="jxr_linenumber" name="272" href="#272">272</a>           client.create(path, <strong class="jxr_keyword">null</strong>, mode);
-<a class="jxr_linenumber" name="273" href="#273">273</a> 
-<a class="jxr_linenumber" name="274" href="#274">274</a>           client.asyncSetData(path, record, -1, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="275" href="#275">275</a>         }
-<a class="jxr_linenumber" name="276" href="#276">276</a>       }
-<a class="jxr_linenumber" name="277" href="#277">277</a>     }
-<a class="jxr_linenumber" name="278" href="#278">278</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="279" href="#279">279</a>     {
-<a class="jxr_linenumber" name="280" href="#280">280</a>       logger.error(<span class="jxr_string">"Exception in async create or update "</span> + path + <span class="jxr_string">". Exception: "</span>
-<a class="jxr_linenumber" name="281" href="#281">281</a>           + e.getMessage() + <span class="jxr_string">". Give up."</span>);
-<a class="jxr_linenumber" name="282" href="#282">282</a>     }
-<a class="jxr_linenumber" name="283" href="#283">283</a>   }
-<a class="jxr_linenumber" name="284" href="#284">284</a> 
-<a class="jxr_linenumber" name="285" href="#285">285</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createOrReplace(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="286" href="#286">286</a>                                      String path,
-<a class="jxr_linenumber" name="287" href="#287">287</a>                                      <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
-<a class="jxr_linenumber" name="288" href="#288">288</a>                                      <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> persistent)
-<a class="jxr_linenumber" name="289" href="#289">289</a>   {
-<a class="jxr_linenumber" name="290" href="#290">290</a>     <strong class="jxr_keyword">int</strong> retryCount = 0;
-<a class="jxr_linenumber" name="291" href="#291">291</a>     <strong class="jxr_keyword">while</strong> (retryCount &lt; RETRYLIMIT)
-<a class="jxr_linenumber" name="292" href="#292">292</a>     {
-<a class="jxr_linenumber" name="293" href="#293">293</a>       <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="294" href="#294">294</a>       {
-<a class="jxr_linenumber" name="295" href="#295">295</a>         <strong class="jxr_keyword">if</strong> (client.exists(path))
-<a class="jxr_linenumber" name="296" href="#296">296</a>         {
-<a class="jxr_linenumber" name="297" href="#297">297</a>           DataUpdater&lt;Object&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;Object&gt;()
-<a class="jxr_linenumber" name="298" href="#298">298</a>           {
-<a class="jxr_linenumber" name="299" href="#299">299</a>             @Override
-<a class="jxr_linenumber" name="300" href="#300">300</a>             <strong class="jxr_keyword">public</strong> Object update(Object currentData)
-<a class="jxr_linenumber" name="301" href="#301">301</a>             {
-<a class="jxr_linenumber" name="302" href="#302">302</a>               <strong class="jxr_keyword">return</strong> record;
-<a class="jxr_linenumber" name="303" href="#303">303</a>             }
-<a class="jxr_linenumber" name="304" href="#304">304</a>           };
-<a class="jxr_linenumber" name="305" href="#305">305</a>           client.updateDataSerialized(path, updater);
-<a class="jxr_linenumber" name="306" href="#306">306</a>         }
-<a class="jxr_linenumber" name="307" href="#307">307</a>         <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="308" href="#308">308</a>         {
-<a class="jxr_linenumber" name="309" href="#309">309</a>           CreateMode mode = (persistent) ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL;
-<a class="jxr_linenumber" name="310" href="#310">310</a>           client.create(path, record, mode);
-<a class="jxr_linenumber" name="311" href="#311">311</a>         }
-<a class="jxr_linenumber" name="312" href="#312">312</a>         <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="313" href="#313">313</a>       }
-<a class="jxr_linenumber" name="314" href="#314">314</a>       <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="315" href="#315">315</a>       {
-<a class="jxr_linenumber" name="316" href="#316">316</a>         retryCount = retryCount + 1;
-<a class="jxr_linenumber" name="317" href="#317">317</a>         logger.warn(<span class="jxr_string">"Exception trying to createOrReplace "</span> + path + <span class="jxr_string">" Exception:"</span>
-<a class="jxr_linenumber" name="318" href="#318">318</a>             + e.getMessage() + <span class="jxr_string">". Will retry."</span>);
-<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>   }
-<a class="jxr_linenumber" name="322" href="#322">322</a> 
-<a class="jxr_linenumber" name="323" href="#323">323</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> subtract(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
-<a class="jxr_linenumber" name="324" href="#324">324</a>                               String path,
-<a class="jxr_linenumber" name="325" href="#325">325</a>                               <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> recordTosubtract)
-<a class="jxr_linenumber" name="326" href="#326">326</a>   {
-<a class="jxr_linenumber" name="327" href="#327">327</a>     <strong class="jxr_keyword">int</strong> retryCount = 0;
-<a class="jxr_linenumber" name="328" href="#328">328</a>     <strong class="jxr_keyword">while</strong> (retryCount &lt; RETRYLIMIT)
-<a class="jxr_linenumber" name="329" href="#329">329</a>     {
-<a class="jxr_linenumber" name="330" href="#330">330</a>       <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="331" href="#331">331</a>       {
-<a class="jxr_linenumber" name="332" href="#332">332</a>         <strong class="jxr_keyword">if</strong> (client.exists(path))
-<a class="jxr_linenumber" name="333" href="#333">333</a>         {
-<a class="jxr_linenumber" name="334" href="#334">334</a>           DataUpdater&lt;ZNRecord&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;ZNRecord&gt;()
-<a class="jxr_linenumber" name="335" href="#335">335</a>           {
-<a class="jxr_linenumber" name="336" href="#336">336</a>             @Override
-<a class="jxr_linenumber" name="337" href="#337">337</a>             <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> update(<a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> currentData)
-<a class="jxr_linenumber" name="338" href="#338">338</a>             {
-<a class="jxr_linenumber" name="339" href="#339">339</a>               currentData.subtract(recordTosubtract);
-<a class="jxr_linenumber" name="340" href="#340">340</a>               <strong class="jxr_keyword">return</strong> currentData;
-<a class="jxr_linenumber" name="341" href="#341">341</a>             }
-<a class="jxr_linenumber" name="342" href="#342">342</a>           };
-<a class="jxr_linenumber" name="343" href="#343">343</a>           client.updateDataSerialized(path, updater);
-<a class="jxr_linenumber" name="344" href="#344">344</a>           <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="345" href="#345">345</a>         }
-<a class="jxr_linenumber" name="346" href="#346">346</a>       }
-<a class="jxr_linenumber" name="347" href="#347">347</a>       <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="348" href="#348">348</a>       {
-<a class="jxr_linenumber" name="349" href="#349">349</a>         retryCount = retryCount + 1;
-<a class="jxr_linenumber" name="350" href="#350">350</a>         logger.warn(<span class="jxr_string">"Exception trying to createOrReplace "</span> + path + <span class="jxr_string">" Exception:"</span>
-<a class="jxr_linenumber" name="351" href="#351">351</a>             + e.getMessage() + <span class="jxr_string">". Will retry."</span>);
-<a class="jxr_linenumber" name="352" href="#352">352</a>         e.printStackTrace();
-<a class="jxr_linenumber" name="353" href="#353">353</a>       }
-<a class="jxr_linenumber" name="354" href="#354">354</a>     }
-<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="357" href="#357">357</a> }
+<a class="jxr_linenumber" name="254" href="#254">254</a>       }
+<a class="jxr_linenumber" name="255" href="#255">255</a>       <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="256" href="#256">256</a>       {
+<a class="jxr_linenumber" name="257" href="#257">257</a>         CreateMode mode = (persistent) ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL;
+<a class="jxr_linenumber" name="258" href="#258">258</a>         <strong class="jxr_keyword">if</strong> (record.getDeltaList().size() &gt; 0)
+<a class="jxr_linenumber" name="259" href="#259">259</a>         {
+<a class="jxr_linenumber" name="260" href="#260">260</a>           <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> newRecord = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a>(record.getId());
+<a class="jxr_linenumber" name="261" href="#261">261</a>           newRecord.merge(record);
+<a class="jxr_linenumber" name="262" href="#262">262</a>           client.create(path, <strong class="jxr_keyword">null</strong>, mode);
+<a class="jxr_linenumber" name="263" href="#263">263</a> 
+<a class="jxr_linenumber" name="264" href="#264">264</a>           client.asyncSetData(path, newRecord, -1, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="265" href="#265">265</a>         }
+<a class="jxr_linenumber" name="266" href="#266">266</a>         <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="267" href="#267">267</a>         {
+<a class="jxr_linenumber" name="268" href="#268">268</a>           client.create(path, <strong class="jxr_keyword">null</strong>, mode);
+<a class="jxr_linenumber" name="269" href="#269">269</a> 
+<a class="jxr_linenumber" name="270" href="#270">270</a>           client.asyncSetData(path, record, -1, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="271" href="#271">271</a>         }
+<a class="jxr_linenumber" name="272" href="#272">272</a>       }
+<a class="jxr_linenumber" name="273" href="#273">273</a>     }
+<a class="jxr_linenumber" name="274" href="#274">274</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="275" href="#275">275</a>     {
+<a class="jxr_linenumber" name="276" href="#276">276</a>       logger.error(<span class="jxr_string">"Exception in async create or update "</span> + path + <span class="jxr_string">". Exception: "</span>
+<a class="jxr_linenumber" name="277" href="#277">277</a>           + e.getMessage() + <span class="jxr_string">". Give up."</span>);
+<a class="jxr_linenumber" name="278" href="#278">278</a>     }
+<a class="jxr_linenumber" name="279" href="#279">279</a>   }
+<a class="jxr_linenumber" name="280" href="#280">280</a> 
+<a class="jxr_linenumber" name="281" href="#281">281</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> createOrReplace(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="282" href="#282">282</a>                                      String path,
+<a class="jxr_linenumber" name="283" href="#283">283</a>                                      <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> record,
+<a class="jxr_linenumber" name="284" href="#284">284</a>                                      <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> persistent)
+<a class="jxr_linenumber" name="285" href="#285">285</a>   {
+<a class="jxr_linenumber" name="286" href="#286">286</a>     <strong class="jxr_keyword">int</strong> retryCount = 0;
+<a class="jxr_linenumber" name="287" href="#287">287</a>     <strong class="jxr_keyword">while</strong> (retryCount &lt; RETRYLIMIT)
+<a class="jxr_linenumber" name="288" href="#288">288</a>     {
+<a class="jxr_linenumber" name="289" href="#289">289</a>       <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="290" href="#290">290</a>       {
+<a class="jxr_linenumber" name="291" href="#291">291</a>         <strong class="jxr_keyword">if</strong> (client.exists(path))
+<a class="jxr_linenumber" name="292" href="#292">292</a>         {
+<a class="jxr_linenumber" name="293" href="#293">293</a>           DataUpdater&lt;Object&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;Object&gt;()
+<a class="jxr_linenumber" name="294" href="#294">294</a>           {
+<a class="jxr_linenumber" name="295" href="#295">295</a>             @Override
+<a class="jxr_linenumber" name="296" href="#296">296</a>             <strong class="jxr_keyword">public</strong> Object update(Object currentData)
+<a class="jxr_linenumber" name="297" href="#297">297</a>             {
+<a class="jxr_linenumber" name="298" href="#298">298</a>               <strong class="jxr_keyword">return</strong> record;
+<a class="jxr_linenumber" name="299" href="#299">299</a>             }
+<a class="jxr_linenumber" name="300" href="#300">300</a>           };
+<a class="jxr_linenumber" name="301" href="#301">301</a>           client.updateDataSerialized(path, updater);
+<a class="jxr_linenumber" name="302" href="#302">302</a>         }
+<a class="jxr_linenumber" name="303" href="#303">303</a>         <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="304" href="#304">304</a>         {
+<a class="jxr_linenumber" name="305" href="#305">305</a>           CreateMode mode = (persistent) ? CreateMode.PERSISTENT : CreateMode.EPHEMERAL;
+<a class="jxr_linenumber" name="306" href="#306">306</a>           client.create(path, record, mode);
+<a class="jxr_linenumber" name="307" href="#307">307</a>         }
+<a class="jxr_linenumber" name="308" href="#308">308</a>         <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="309" href="#309">309</a>       }
+<a class="jxr_linenumber" name="310" href="#310">310</a>       <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="311" href="#311">311</a>       {
+<a class="jxr_linenumber" name="312" href="#312">312</a>         retryCount = retryCount + 1;
+<a class="jxr_linenumber" name="313" href="#313">313</a>         logger.warn(<span class="jxr_string">"Exception trying to createOrReplace "</span> + path + <span class="jxr_string">" Exception:"</span>
+<a class="jxr_linenumber" name="314" href="#314">314</a>             + e.getMessage() + <span class="jxr_string">". Will retry."</span>);
+<a class="jxr_linenumber" name="315" href="#315">315</a>       }
+<a class="jxr_linenumber" name="316" href="#316">316</a>     }
+<a class="jxr_linenumber" name="317" href="#317">317</a>   }
+<a class="jxr_linenumber" name="318" href="#318">318</a> 
+<a class="jxr_linenumber" name="319" href="#319">319</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> subtract(<a href="../../../../../org/apache/helix/manager/zk/ZkClient.html">ZkClient</a> client,
+<a class="jxr_linenumber" name="320" href="#320">320</a>                               String path,
+<a class="jxr_linenumber" name="321" href="#321">321</a>                               <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> recordTosubtract)
+<a class="jxr_linenumber" name="322" href="#322">322</a>   {
+<a class="jxr_linenumber" name="323" href="#323">323</a>     <strong class="jxr_keyword">int</strong> retryCount = 0;
+<a class="jxr_linenumber" name="324" href="#324">324</a>     <strong class="jxr_keyword">while</strong> (retryCount &lt; RETRYLIMIT)
+<a class="jxr_linenumber" name="325" href="#325">325</a>     {
+<a class="jxr_linenumber" name="326" href="#326">326</a>       <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="327" href="#327">327</a>       {
+<a class="jxr_linenumber" name="328" href="#328">328</a>         <strong class="jxr_keyword">if</strong> (client.exists(path))
+<a class="jxr_linenumber" name="329" href="#329">329</a>         {
+<a class="jxr_linenumber" name="330" href="#330">330</a>           DataUpdater&lt;ZNRecord&gt; updater = <strong class="jxr_keyword">new</strong> DataUpdater&lt;ZNRecord&gt;()
+<a class="jxr_linenumber" name="331" href="#331">331</a>           {
+<a class="jxr_linenumber" name="332" href="#332">332</a>             @Override
+<a class="jxr_linenumber" name="333" href="#333">333</a>             <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> update(<a href="../../../../../org/apache/helix/ZNRecord.html">ZNRecord</a> currentData)
+<a class="jxr_linenumber" name="334" href="#334">334</a>             {
+<a class="jxr_linenumber" name="335" href="#335">335</a>               currentData.subtract(recordTosubtract);
+<a class="jxr_linenumber" name="336" href="#336">336</a>               <strong class="jxr_keyword">return</strong> currentData;
+<a class="jxr_linenumber" name="337" href="#337">337</a>             }
+<a class="jxr_linenumber" name="338" href="#338">338</a>           };
+<a class="jxr_linenumber" name="339" href="#339">339</a>           client.updateDataSerialized(path, updater);
+<a class="jxr_linenumber" name="340" href="#340">340</a>           <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="341" href="#341">341</a>         }
+<a class="jxr_linenumber" name="342" href="#342">342</a>       }
+<a class="jxr_linenumber" name="343" href="#343">343</a>       <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="344" href="#344">344</a>       {
+<a class="jxr_linenumber" name="345" href="#345">345</a>         retryCount = retryCount + 1;
+<a class="jxr_linenumber" name="346" href="#346">346</a>         logger.warn(<span class="jxr_string">"Exception trying to createOrReplace "</span> + path + <span class="jxr_string">" Exception:"</span>
+<a class="jxr_linenumber" name="347" href="#347">347</a>             + e.getMessage() + <span class="jxr_string">". Will retry."</span>);
+<a class="jxr_linenumber" name="348" href="#348">348</a>         e.printStackTrace();
+<a class="jxr_linenumber" name="349" href="#349">349</a>       }
+<a class="jxr_linenumber" name="350" href="#350">350</a>     }
+<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> }
 </pre>
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