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From ol...@apache.org
Subject svn commit: r1441217 [15/16] - in /incubator/helix/site-content: ./ apidocs/reference/ apidocs/reference/org/apache/helix/manager/zk/ helix-admin-webapp/ helix-core/ involved/ mockservice/ recipes/ recipes/distributed-lock-manager/ recipes/rabbitmq-con...
Date Thu, 31 Jan 2013 22:04:46 GMT
Modified: incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKHelixManager.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKHelixManager.html?rev=1441217&r1=1441216&r2=1441217&view=diff
==============================================================================
--- incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKHelixManager.html (original)
+++ incubator/helix/site-content/xref/org/apache/helix/manager/zk/ZKHelixManager.html Thu Jan 31 22:04:40 2013
@@ -127,949 +127,983 @@
 <a class="jxr_linenumber" name="117" href="#117">117</a>   List&lt;PreConnectCallback&gt;                     _preConnectCallbacks    =
 <a class="jxr_linenumber" name="118" href="#118">118</a>                                                                            <strong class="jxr_keyword">new</strong> LinkedList&lt;PreConnectCallback&gt;();
 <a class="jxr_linenumber" name="119" href="#119">119</a>   <a href="../../../../../org/apache/helix/controller/restlet/ZKPropertyTransferServer.html">ZKPropertyTransferServer</a>                     _transferServer         = <strong class="jxr_keyword">null</strong>;
-<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> <a href="../../../../../org/apache/helix/manager/zk/ZKHelixManager.html">ZKHelixManager</a>(String clusterName,
-<a class="jxr_linenumber" name="122" href="#122">122</a>                         String instanceName,
-<a class="jxr_linenumber" name="123" href="#123">123</a>                         <a href="../../../../../org/apache/helix/InstanceType.html">InstanceType</a> instanceType,
-<a class="jxr_linenumber" name="124" href="#124">124</a>                         String zkConnectString) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="125" href="#125">125</a>   {
-<a class="jxr_linenumber" name="126" href="#126">126</a>     logger.info(<span class="jxr_string">"Create a zk-based cluster manager. clusterName:"</span> + clusterName
-<a class="jxr_linenumber" name="127" href="#127">127</a>         + <span class="jxr_string">", instanceName:"</span> + instanceName + <span class="jxr_string">", type:"</span> + instanceType + <span class="jxr_string">", zkSvr:"</span>
-<a class="jxr_linenumber" name="128" href="#128">128</a>         + zkConnectString);
-<a class="jxr_linenumber" name="129" href="#129">129</a>     <strong class="jxr_keyword">int</strong> sessionTimeoutInt = -1;
-<a class="jxr_linenumber" name="130" href="#130">130</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="131" href="#131">131</a>     {
-<a class="jxr_linenumber" name="132" href="#132">132</a>       sessionTimeoutInt =
-<a class="jxr_linenumber" name="133" href="#133">133</a>           Integer.parseInt(System.getProperty(<span class="jxr_string">"zk.session.timeout"</span>, <span class="jxr_string">""</span>
-<a class="jxr_linenumber" name="134" href="#134">134</a>               + DEFAULT_SESSION_TIMEOUT));
-<a class="jxr_linenumber" name="135" href="#135">135</a>     }
-<a class="jxr_linenumber" name="136" href="#136">136</a>     <strong class="jxr_keyword">catch</strong> (NumberFormatException e)
-<a class="jxr_linenumber" name="137" href="#137">137</a>     {
-<a class="jxr_linenumber" name="138" href="#138">138</a>       logger.warn(<span class="jxr_string">"Exception while parsing session timeout: "</span>
-<a class="jxr_linenumber" name="139" href="#139">139</a>           + System.getProperty(<span class="jxr_string">"zk.session.timeout"</span>, <span class="jxr_string">""</span> + DEFAULT_SESSION_TIMEOUT));
-<a class="jxr_linenumber" name="140" href="#140">140</a>     }
-<a class="jxr_linenumber" name="141" href="#141">141</a>     <strong class="jxr_keyword">if</strong> (sessionTimeoutInt &gt; 0)
-<a class="jxr_linenumber" name="142" href="#142">142</a>     {
-<a class="jxr_linenumber" name="143" href="#143">143</a>       _sessionTimeout = sessionTimeoutInt;
+<a class="jxr_linenumber" name="120" href="#120">120</a>   <strong class="jxr_keyword">int</strong>                                          _flappingTimeWindowMs; 
+<a class="jxr_linenumber" name="121" href="#121">121</a>   <strong class="jxr_keyword">int</strong>                                          _maxDisconnectThreshold;
+<a class="jxr_linenumber" name="122" href="#122">122</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>                     FLAPPING_TIME_WINDIOW   = 300000; <em class="jxr_comment">// Default to 300 sec</em>
+<a class="jxr_linenumber" name="123" href="#123">123</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>                     MAX_DISCONNECT_THRESHOLD = 5;
+<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> <a href="../../../../../org/apache/helix/manager/zk/ZKHelixManager.html">ZKHelixManager</a>(String clusterName,
+<a class="jxr_linenumber" name="126" href="#126">126</a>                         String instanceName,
+<a class="jxr_linenumber" name="127" href="#127">127</a>                         <a href="../../../../../org/apache/helix/InstanceType.html">InstanceType</a> instanceType,
+<a class="jxr_linenumber" name="128" href="#128">128</a>                         String zkConnectString) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="129" href="#129">129</a>   {
+<a class="jxr_linenumber" name="130" href="#130">130</a>     logger.info(<span class="jxr_string">"Create a zk-based cluster manager. clusterName:"</span> + clusterName
+<a class="jxr_linenumber" name="131" href="#131">131</a>         + <span class="jxr_string">", instanceName:"</span> + instanceName + <span class="jxr_string">", type:"</span> + instanceType + <span class="jxr_string">", zkSvr:"</span>
+<a class="jxr_linenumber" name="132" href="#132">132</a>         + zkConnectString);
+<a class="jxr_linenumber" name="133" href="#133">133</a>     _flappingTimeWindowMs = FLAPPING_TIME_WINDIOW;
+<a class="jxr_linenumber" name="134" href="#134">134</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="135" href="#135">135</a>     {
+<a class="jxr_linenumber" name="136" href="#136">136</a>       _flappingTimeWindowMs =
+<a class="jxr_linenumber" name="137" href="#137">137</a>           Integer.parseInt(System.getProperty(<span class="jxr_string">"helixmanager.flappingTimeWindow"</span>, <span class="jxr_string">""</span>
+<a class="jxr_linenumber" name="138" href="#138">138</a>               + FLAPPING_TIME_WINDIOW));
+<a class="jxr_linenumber" name="139" href="#139">139</a>     }
+<a class="jxr_linenumber" name="140" href="#140">140</a>     <strong class="jxr_keyword">catch</strong> (NumberFormatException e)
+<a class="jxr_linenumber" name="141" href="#141">141</a>     {
+<a class="jxr_linenumber" name="142" href="#142">142</a>       logger.warn(<span class="jxr_string">"Exception while parsing helixmanager.flappingTimeWindow: "</span>
+<a class="jxr_linenumber" name="143" href="#143">143</a>           + System.getProperty(<span class="jxr_string">"helixmanager.flappingTimeWindow"</span>, <span class="jxr_string">""</span> + FLAPPING_TIME_WINDIOW));
 <a class="jxr_linenumber" name="144" href="#144">144</a>     }
-<a class="jxr_linenumber" name="145" href="#145">145</a>     <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="146" href="#146">146</a>     {
-<a class="jxr_linenumber" name="147" href="#147">147</a>       _sessionTimeout = DEFAULT_SESSION_TIMEOUT;
-<a class="jxr_linenumber" name="148" href="#148">148</a>     }
-<a class="jxr_linenumber" name="149" href="#149">149</a>     <strong class="jxr_keyword">if</strong> (instanceName == <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="150" href="#150">150</a>     {
-<a class="jxr_linenumber" name="151" href="#151">151</a>       <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="152" href="#152">152</a>       {
-<a class="jxr_linenumber" name="153" href="#153">153</a>         instanceName =
-<a class="jxr_linenumber" name="154" href="#154">154</a>             InetAddress.getLocalHost().getCanonicalHostName() + <span class="jxr_string">"-"</span>
-<a class="jxr_linenumber" name="155" href="#155">155</a>                 + instanceType.toString();
-<a class="jxr_linenumber" name="156" href="#156">156</a>       }
-<a class="jxr_linenumber" name="157" href="#157">157</a>       <strong class="jxr_keyword">catch</strong> (UnknownHostException e)
-<a class="jxr_linenumber" name="158" href="#158">158</a>       {
-<a class="jxr_linenumber" name="159" href="#159">159</a>         <em class="jxr_comment">// can ignore it</em>
-<a class="jxr_linenumber" name="160" href="#160">160</a>         logger.info(<span class="jxr_string">"Unable to get host name. Will set it to UNKNOWN, mostly ignorable"</span>,
-<a class="jxr_linenumber" name="161" href="#161">161</a>                     e);
-<a class="jxr_linenumber" name="162" href="#162">162</a>         instanceName = <span class="jxr_string">"UNKNOWN"</span>;
-<a class="jxr_linenumber" name="163" href="#163">163</a>       }
-<a class="jxr_linenumber" name="164" href="#164">164</a>     }
-<a class="jxr_linenumber" name="165" href="#165">165</a> 
-<a class="jxr_linenumber" name="166" href="#166">166</a>     _clusterName = clusterName;
-<a class="jxr_linenumber" name="167" href="#167">167</a>     _instanceName = instanceName;
-<a class="jxr_linenumber" name="168" href="#168">168</a>     _instanceType = instanceType;
-<a class="jxr_linenumber" name="169" href="#169">169</a>     _zkConnectString = zkConnectString;
-<a class="jxr_linenumber" name="170" href="#170">170</a>     _zkStateChangeListener = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/manager/zk/ZkStateChangeListener.html">ZkStateChangeListener</a>(<strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="171" href="#171">171</a>     _timer = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="172" href="#172">172</a> 
-<a class="jxr_linenumber" name="173" href="#173">173</a>     _handlers = <strong class="jxr_keyword">new</strong> ArrayList&lt;CallbackHandler&gt;();
-<a class="jxr_linenumber" name="174" href="#174">174</a> 
-<a class="jxr_linenumber" name="175" href="#175">175</a>     _messagingService = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/messaging/DefaultMessagingService.html">DefaultMessagingService</a>(<strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="176" href="#176">176</a> 
-<a class="jxr_linenumber" name="177" href="#177">177</a>     _version =
-<a class="jxr_linenumber" name="178" href="#178">178</a>         <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/tools/PropertiesReader.html">PropertiesReader</a>(<span class="jxr_string">"cluster-manager-version.properties"</span>).getProperty(<span class="jxr_string">"clustermanager.version"</span>);
-<a class="jxr_linenumber" name="179" href="#179">179</a> 
-<a class="jxr_linenumber" name="180" href="#180">180</a>     _stateMachEngine = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/participant/HelixStateMachineEngine.html">HelixStateMachineEngine</a>(<strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="181" href="#181">181</a> 
-<a class="jxr_linenumber" name="182" href="#182">182</a>     <em class="jxr_comment">// add all timer tasks</em>
-<a class="jxr_linenumber" name="183" href="#183">183</a>     _controllerTimerTasks = <strong class="jxr_keyword">new</strong> ArrayList&lt;HelixTimerTask&gt;();
-<a class="jxr_linenumber" name="184" href="#184">184</a>     <strong class="jxr_keyword">if</strong> (_instanceType == InstanceType.CONTROLLER)
-<a class="jxr_linenumber" name="185" href="#185">185</a>     {
-<a class="jxr_linenumber" name="186" href="#186">186</a>       _controllerTimerTasks.add(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/healthcheck/HealthStatsAggregationTask.html">HealthStatsAggregationTask</a>(<strong class="jxr_keyword">this</strong>));
-<a class="jxr_linenumber" name="187" href="#187">187</a>     }
-<a class="jxr_linenumber" name="188" href="#188">188</a>   }
-<a class="jxr_linenumber" name="189" href="#189">189</a> 
-<a class="jxr_linenumber" name="190" href="#190">190</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> isInstanceSetup()
-<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> (_instanceType == InstanceType.PARTICIPANT
-<a class="jxr_linenumber" name="193" href="#193">193</a>         || _instanceType == InstanceType.CONTROLLER_PARTICIPANT)
-<a class="jxr_linenumber" name="194" href="#194">194</a>     {
-<a class="jxr_linenumber" name="195" href="#195">195</a>       <strong class="jxr_keyword">boolean</strong> isValid =
-<a class="jxr_linenumber" name="196" href="#196">196</a>           _zkClient.exists(PropertyPathConfig.getPath(PropertyType.CONFIGS,
-<a class="jxr_linenumber" name="197" href="#197">197</a>                                                       _clusterName,
-<a class="jxr_linenumber" name="198" href="#198">198</a>                                                       ConfigScopeProperty.PARTICIPANT.toString(),
-<a class="jxr_linenumber" name="199" href="#199">199</a>                                                       _instanceName))
-<a class="jxr_linenumber" name="200" href="#200">200</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.MESSAGES,
-<a class="jxr_linenumber" name="201" href="#201">201</a>                                                              _clusterName,
-<a class="jxr_linenumber" name="202" href="#202">202</a>                                                              _instanceName))
-<a class="jxr_linenumber" name="203" href="#203">203</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.CURRENTSTATES,
-<a class="jxr_linenumber" name="204" href="#204">204</a>                                                              _clusterName,
-<a class="jxr_linenumber" name="205" href="#205">205</a>                                                              _instanceName))
-<a class="jxr_linenumber" name="206" href="#206">206</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.STATUSUPDATES,
-<a class="jxr_linenumber" name="207" href="#207">207</a>                                                              _clusterName,
-<a class="jxr_linenumber" name="208" href="#208">208</a>                                                              _instanceName))
-<a class="jxr_linenumber" name="209" href="#209">209</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.ERRORS,
-<a class="jxr_linenumber" name="210" href="#210">210</a>                                                              _clusterName,
-<a class="jxr_linenumber" name="211" href="#211">211</a>                                                              _instanceName));
-<a class="jxr_linenumber" name="212" href="#212">212</a> 
-<a class="jxr_linenumber" name="213" href="#213">213</a>       <strong class="jxr_keyword">return</strong> isValid;
-<a class="jxr_linenumber" name="214" href="#214">214</a>     }
-<a class="jxr_linenumber" name="215" href="#215">215</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="145" href="#145">145</a>     _maxDisconnectThreshold = MAX_DISCONNECT_THRESHOLD;
+<a class="jxr_linenumber" name="146" href="#146">146</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="147" href="#147">147</a>     {
+<a class="jxr_linenumber" name="148" href="#148">148</a>       _maxDisconnectThreshold =
+<a class="jxr_linenumber" name="149" href="#149">149</a>           Integer.parseInt(System.getProperty(<span class="jxr_string">"helixmanager.maxDisconnectThreshold"</span>, <span class="jxr_string">""</span>
+<a class="jxr_linenumber" name="150" href="#150">150</a>               + MAX_DISCONNECT_THRESHOLD));
+<a class="jxr_linenumber" name="151" href="#151">151</a>     }
+<a class="jxr_linenumber" name="152" href="#152">152</a>     <strong class="jxr_keyword">catch</strong> (NumberFormatException e)
+<a class="jxr_linenumber" name="153" href="#153">153</a>     {
+<a class="jxr_linenumber" name="154" href="#154">154</a>       logger.warn(<span class="jxr_string">"Exception while parsing helixmanager.maxDisconnectThreshold: "</span>
+<a class="jxr_linenumber" name="155" href="#155">155</a>           + System.getProperty(<span class="jxr_string">"helixmanager.maxDisconnectThreshold"</span>, <span class="jxr_string">""</span> + MAX_DISCONNECT_THRESHOLD));
+<a class="jxr_linenumber" name="156" href="#156">156</a>     }
+<a class="jxr_linenumber" name="157" href="#157">157</a>     <strong class="jxr_keyword">int</strong> sessionTimeoutInt = -1;
+<a class="jxr_linenumber" name="158" href="#158">158</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="159" href="#159">159</a>     {
+<a class="jxr_linenumber" name="160" href="#160">160</a>       sessionTimeoutInt =
+<a class="jxr_linenumber" name="161" href="#161">161</a>           Integer.parseInt(System.getProperty(<span class="jxr_string">"helixmanager.flappingTimeWindow"</span>, <span class="jxr_string">""</span>
+<a class="jxr_linenumber" name="162" href="#162">162</a>               + DEFAULT_SESSION_TIMEOUT));
+<a class="jxr_linenumber" name="163" href="#163">163</a>     }
+<a class="jxr_linenumber" name="164" href="#164">164</a>     <strong class="jxr_keyword">catch</strong> (NumberFormatException e)
+<a class="jxr_linenumber" name="165" href="#165">165</a>     {
+<a class="jxr_linenumber" name="166" href="#166">166</a>       logger.warn(<span class="jxr_string">"Exception while parsing session timeout: "</span>
+<a class="jxr_linenumber" name="167" href="#167">167</a>           + System.getProperty(<span class="jxr_string">"zk.session.timeout"</span>, <span class="jxr_string">""</span> + DEFAULT_SESSION_TIMEOUT));
+<a class="jxr_linenumber" name="168" href="#168">168</a>     }
+<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">if</strong> (sessionTimeoutInt &gt; 0)
+<a class="jxr_linenumber" name="170" href="#170">170</a>     {
+<a class="jxr_linenumber" name="171" href="#171">171</a>       _sessionTimeout = sessionTimeoutInt;
+<a class="jxr_linenumber" name="172" href="#172">172</a>     }
+<a class="jxr_linenumber" name="173" href="#173">173</a>     <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="174" href="#174">174</a>     {
+<a class="jxr_linenumber" name="175" href="#175">175</a>       _sessionTimeout = DEFAULT_SESSION_TIMEOUT;
+<a class="jxr_linenumber" name="176" href="#176">176</a>     }
+<a class="jxr_linenumber" name="177" href="#177">177</a>     <strong class="jxr_keyword">if</strong> (instanceName == <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="178" href="#178">178</a>     {
+<a class="jxr_linenumber" name="179" href="#179">179</a>       <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="180" href="#180">180</a>       {
+<a class="jxr_linenumber" name="181" href="#181">181</a>         instanceName =
+<a class="jxr_linenumber" name="182" href="#182">182</a>             InetAddress.getLocalHost().getCanonicalHostName() + <span class="jxr_string">"-"</span>
+<a class="jxr_linenumber" name="183" href="#183">183</a>                 + instanceType.toString();
+<a class="jxr_linenumber" name="184" href="#184">184</a>       }
+<a class="jxr_linenumber" name="185" href="#185">185</a>       <strong class="jxr_keyword">catch</strong> (UnknownHostException e)
+<a class="jxr_linenumber" name="186" href="#186">186</a>       {
+<a class="jxr_linenumber" name="187" href="#187">187</a>         <em class="jxr_comment">// can ignore it</em>
+<a class="jxr_linenumber" name="188" href="#188">188</a>         logger.info(<span class="jxr_string">"Unable to get host name. Will set it to UNKNOWN, mostly ignorable"</span>,
+<a class="jxr_linenumber" name="189" href="#189">189</a>                     e);
+<a class="jxr_linenumber" name="190" href="#190">190</a>         instanceName = <span class="jxr_string">"UNKNOWN"</span>;
+<a class="jxr_linenumber" name="191" href="#191">191</a>       }
+<a class="jxr_linenumber" name="192" href="#192">192</a>     }
+<a class="jxr_linenumber" name="193" href="#193">193</a> 
+<a class="jxr_linenumber" name="194" href="#194">194</a>     _clusterName = clusterName;
+<a class="jxr_linenumber" name="195" href="#195">195</a>     _instanceName = instanceName;
+<a class="jxr_linenumber" name="196" href="#196">196</a>     _instanceType = instanceType;
+<a class="jxr_linenumber" name="197" href="#197">197</a>     _zkConnectString = zkConnectString;
+<a class="jxr_linenumber" name="198" href="#198">198</a>     _zkStateChangeListener = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/manager/zk/ZkStateChangeListener.html">ZkStateChangeListener</a>(<strong class="jxr_keyword">this</strong>, _flappingTimeWindowMs, _maxDisconnectThreshold);
+<a class="jxr_linenumber" name="199" href="#199">199</a>     _timer = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="200" href="#200">200</a> 
+<a class="jxr_linenumber" name="201" href="#201">201</a>     _handlers = <strong class="jxr_keyword">new</strong> ArrayList&lt;CallbackHandler&gt;();
+<a class="jxr_linenumber" name="202" href="#202">202</a> 
+<a class="jxr_linenumber" name="203" href="#203">203</a>     _messagingService = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/messaging/DefaultMessagingService.html">DefaultMessagingService</a>(<strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="204" href="#204">204</a> 
+<a class="jxr_linenumber" name="205" href="#205">205</a>     _version =
+<a class="jxr_linenumber" name="206" href="#206">206</a>         <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/tools/PropertiesReader.html">PropertiesReader</a>(<span class="jxr_string">"cluster-manager-version.properties"</span>).getProperty(<span class="jxr_string">"clustermanager.version"</span>);
+<a class="jxr_linenumber" name="207" href="#207">207</a> 
+<a class="jxr_linenumber" name="208" href="#208">208</a>     _stateMachEngine = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/participant/HelixStateMachineEngine.html">HelixStateMachineEngine</a>(<strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="209" href="#209">209</a> 
+<a class="jxr_linenumber" name="210" href="#210">210</a>     <em class="jxr_comment">// add all timer tasks</em>
+<a class="jxr_linenumber" name="211" href="#211">211</a>     _controllerTimerTasks = <strong class="jxr_keyword">new</strong> ArrayList&lt;HelixTimerTask&gt;();
+<a class="jxr_linenumber" name="212" href="#212">212</a>     <strong class="jxr_keyword">if</strong> (_instanceType == InstanceType.CONTROLLER)
+<a class="jxr_linenumber" name="213" href="#213">213</a>     {
+<a class="jxr_linenumber" name="214" href="#214">214</a>       _controllerTimerTasks.add(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/healthcheck/HealthStatsAggregationTask.html">HealthStatsAggregationTask</a>(<strong class="jxr_keyword">this</strong>));
+<a class="jxr_linenumber" name="215" href="#215">215</a>     }
 <a class="jxr_linenumber" name="216" href="#216">216</a>   }
 <a class="jxr_linenumber" name="217" href="#217">217</a> 
-<a class="jxr_linenumber" name="218" href="#218">218</a>   @Override
-<a class="jxr_linenumber" name="219" href="#219">219</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addIdealStateChangeListener(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/IdealStateChangeListener.html">IdealStateChangeListener</a> listener) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="220" href="#220">220</a>   {
-<a class="jxr_linenumber" name="221" href="#221">221</a>     logger.info(<span class="jxr_string">"ClusterManager.addIdealStateChangeListener()"</span>);
-<a class="jxr_linenumber" name="222" href="#222">222</a>     checkConnected();
-<a class="jxr_linenumber" name="223" href="#223">223</a>     <strong class="jxr_keyword">final</strong> String path =
-<a class="jxr_linenumber" name="224" href="#224">224</a>         PropertyPathConfig.getPath(PropertyType.IDEALSTATES, _clusterName);
-<a class="jxr_linenumber" name="225" href="#225">225</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="226" href="#226">226</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="227" href="#227">227</a>                               listener,
-<a class="jxr_linenumber" name="228" href="#228">228</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeDataChanged,
-<a class="jxr_linenumber" name="229" href="#229">229</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="230" href="#230">230</a>                               IDEAL_STATE);
-<a class="jxr_linenumber" name="231" href="#231">231</a>     addListener(callbackHandler);
-<a class="jxr_linenumber" name="232" href="#232">232</a>   }
-<a class="jxr_linenumber" name="233" href="#233">233</a> 
-<a class="jxr_linenumber" name="234" href="#234">234</a>   @Override
-<a class="jxr_linenumber" name="235" href="#235">235</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addLiveInstanceChangeListener(<a href="../../../../../org/apache/helix/LiveInstanceChangeListener.html">LiveInstanceChangeListener</a> listener) <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="236" href="#236">236</a>   {
-<a class="jxr_linenumber" name="237" href="#237">237</a>     logger.info(<span class="jxr_string">"ClusterManager.addLiveInstanceChangeListener()"</span>);
-<a class="jxr_linenumber" name="238" href="#238">238</a>     checkConnected();
-<a class="jxr_linenumber" name="239" href="#239">239</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().liveInstances().getPath();
-<a class="jxr_linenumber" name="240" href="#240">240</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="241" href="#241">241</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="242" href="#242">242</a>                               listener,
-<a class="jxr_linenumber" name="243" href="#243">243</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeDataChanged, EventType.NodeChildrenChanged,
-<a class="jxr_linenumber" name="244" href="#244">244</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="245" href="#245">245</a>                               LIVE_INSTANCE);
-<a class="jxr_linenumber" name="246" href="#246">246</a>     addListener(callbackHandler);
-<a class="jxr_linenumber" name="247" href="#247">247</a>   }
-<a class="jxr_linenumber" name="248" href="#248">248</a> 
-<a class="jxr_linenumber" name="249" href="#249">249</a>   @Override
-<a class="jxr_linenumber" name="250" href="#250">250</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addConfigChangeListener(<a href="../../../../../org/apache/helix/ConfigChangeListener.html">ConfigChangeListener</a> listener)
-<a class="jxr_linenumber" name="251" href="#251">251</a>   {
-<a class="jxr_linenumber" name="252" href="#252">252</a>     logger.info(<span class="jxr_string">"ClusterManager.addConfigChangeListener()"</span>);
-<a class="jxr_linenumber" name="253" href="#253">253</a>     checkConnected();
-<a class="jxr_linenumber" name="254" href="#254">254</a>     <strong class="jxr_keyword">final</strong> String path =
-<a class="jxr_linenumber" name="255" href="#255">255</a>         PropertyPathConfig.getPath(PropertyType.CONFIGS,
-<a class="jxr_linenumber" name="256" href="#256">256</a>                                    _clusterName,
-<a class="jxr_linenumber" name="257" href="#257">257</a>                                    ConfigScopeProperty.PARTICIPANT.toString());
-<a class="jxr_linenumber" name="258" href="#258">258</a> 
-<a class="jxr_linenumber" name="259" href="#259">259</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="260" href="#260">260</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="261" href="#261">261</a>                               listener,
-<a class="jxr_linenumber" name="262" href="#262">262</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged },
-<a class="jxr_linenumber" name="263" href="#263">263</a>                               CONFIG);
-<a class="jxr_linenumber" name="264" href="#264">264</a>     addListener(callbackHandler);
-<a class="jxr_linenumber" name="265" href="#265">265</a> 
-<a class="jxr_linenumber" name="266" href="#266">266</a>   }
-<a class="jxr_linenumber" name="267" href="#267">267</a> 
-<a class="jxr_linenumber" name="268" href="#268">268</a>   <em class="jxr_comment">// TODO: Decide if do we still need this since we are exposing</em>
-<a class="jxr_linenumber" name="269" href="#269">269</a>   <em class="jxr_comment">// ClusterMessagingService</em>
-<a class="jxr_linenumber" name="270" href="#270">270</a>   @Override
-<a class="jxr_linenumber" name="271" href="#271">271</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addMessageListener(<a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> listener, String instanceName)
-<a class="jxr_linenumber" name="272" href="#272">272</a>   {
-<a class="jxr_linenumber" name="273" href="#273">273</a>     logger.info(<span class="jxr_string">"ClusterManager.addMessageListener() "</span> + instanceName);
-<a class="jxr_linenumber" name="274" href="#274">274</a>     checkConnected();
-<a class="jxr_linenumber" name="275" href="#275">275</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().messages(instanceName).getPath();
-<a class="jxr_linenumber" name="276" href="#276">276</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="277" href="#277">277</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="278" href="#278">278</a>                               listener,
-<a class="jxr_linenumber" name="279" href="#279">279</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
-<a class="jxr_linenumber" name="280" href="#280">280</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="281" href="#281">281</a>                               MESSAGE);
-<a class="jxr_linenumber" name="282" href="#282">282</a>     addListener(callbackHandler);
-<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">void</strong> addControllerMessageListener(<a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> listener)
-<a class="jxr_linenumber" name="286" href="#286">286</a>   {
-<a class="jxr_linenumber" name="287" href="#287">287</a>     logger.info(<span class="jxr_string">"ClusterManager.addControllerMessageListener()"</span>);
-<a class="jxr_linenumber" name="288" href="#288">288</a>     checkConnected();
-<a class="jxr_linenumber" name="289" href="#289">289</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().controllerMessages().getPath();
-<a class="jxr_linenumber" name="290" href="#290">290</a> 
-<a class="jxr_linenumber" name="291" href="#291">291</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="292" href="#292">292</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="293" href="#293">293</a>                               listener,
-<a class="jxr_linenumber" name="294" href="#294">294</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
-<a class="jxr_linenumber" name="295" href="#295">295</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="296" href="#296">296</a>                               MESSAGES_CONTROLLER);
-<a class="jxr_linenumber" name="297" href="#297">297</a>     addListener(callbackHandler);
-<a class="jxr_linenumber" name="298" href="#298">298</a>   }
-<a class="jxr_linenumber" name="299" href="#299">299</a> 
-<a class="jxr_linenumber" name="300" href="#300">300</a>   @Override
-<a class="jxr_linenumber" name="301" href="#301">301</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addCurrentStateChangeListener(<a href="../../../../../org/apache/helix/CurrentStateChangeListener.html">CurrentStateChangeListener</a> listener,
-<a class="jxr_linenumber" name="302" href="#302">302</a>                                             String instanceName,
-<a class="jxr_linenumber" name="303" href="#303">303</a>                                             String sessionId)
-<a class="jxr_linenumber" name="304" href="#304">304</a>   {
-<a class="jxr_linenumber" name="305" href="#305">305</a>     logger.info(<span class="jxr_string">"ClusterManager.addCurrentStateChangeListener() "</span> + instanceName + <span class="jxr_string">" "</span>
-<a class="jxr_linenumber" name="306" href="#306">306</a>         + sessionId);
-<a class="jxr_linenumber" name="307" href="#307">307</a>     checkConnected();
-<a class="jxr_linenumber" name="308" href="#308">308</a>     <strong class="jxr_keyword">final</strong> String path =
-<a class="jxr_linenumber" name="309" href="#309">309</a>         _helixAccessor.keyBuilder().currentStates(instanceName, sessionId).getPath();
-<a class="jxr_linenumber" name="310" href="#310">310</a> 
-<a class="jxr_linenumber" name="311" href="#311">311</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="312" href="#312">312</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="313" href="#313">313</a>                               listener,
-<a class="jxr_linenumber" name="314" href="#314">314</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
-<a class="jxr_linenumber" name="315" href="#315">315</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="316" href="#316">316</a>                               CURRENT_STATE);
-<a class="jxr_linenumber" name="317" href="#317">317</a>     addListener(callbackHandler);
-<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>   @Override
-<a class="jxr_linenumber" name="321" href="#321">321</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addHealthStateChangeListener(<a href="../../../../../org/apache/helix/HealthStateChangeListener.html">HealthStateChangeListener</a> listener,
-<a class="jxr_linenumber" name="322" href="#322">322</a>                                            String instanceName)
-<a class="jxr_linenumber" name="323" href="#323">323</a>   {
-<a class="jxr_linenumber" name="324" href="#324">324</a>     <em class="jxr_comment">// System.out.println("ZKClusterManager.addHealthStateChangeListener()");</em>
-<a class="jxr_linenumber" name="325" href="#325">325</a>     <em class="jxr_comment">// TODO: re-form this for stats checking</em>
-<a class="jxr_linenumber" name="326" href="#326">326</a>     logger.info(<span class="jxr_string">"ClusterManager.addHealthStateChangeListener()"</span> + instanceName);
-<a class="jxr_linenumber" name="327" href="#327">327</a>     checkConnected();
-<a class="jxr_linenumber" name="328" href="#328">328</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().healthReports(instanceName).getPath();
-<a class="jxr_linenumber" name="329" href="#329">329</a> 
-<a class="jxr_linenumber" name="330" href="#330">330</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="331" href="#331">331</a>         createCallBackHandler(path, listener, <strong class="jxr_keyword">new</strong> EventType[] {
-<a class="jxr_linenumber" name="332" href="#332">332</a>             EventType.NodeChildrenChanged, EventType.NodeDataChanged,
-<a class="jxr_linenumber" name="333" href="#333">333</a>             EventType.NodeDeleted, EventType.NodeCreated }, HEALTH);
-<a class="jxr_linenumber" name="334" href="#334">334</a>     addListener(callbackHandler);
-<a class="jxr_linenumber" name="335" href="#335">335</a>   }
-<a class="jxr_linenumber" name="336" href="#336">336</a> 
-<a class="jxr_linenumber" name="337" href="#337">337</a>   @Override
-<a class="jxr_linenumber" name="338" href="#338">338</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addExternalViewChangeListener(<a href="../../../../../org/apache/helix/ExternalViewChangeListener.html">ExternalViewChangeListener</a> listener)
-<a class="jxr_linenumber" name="339" href="#339">339</a>   {
-<a class="jxr_linenumber" name="340" href="#340">340</a>     logger.info(<span class="jxr_string">"ClusterManager.addExternalViewChangeListener()"</span>);
-<a class="jxr_linenumber" name="341" href="#341">341</a>     checkConnected();
-<a class="jxr_linenumber" name="342" href="#342">342</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().externalViews().getPath();
-<a class="jxr_linenumber" name="343" href="#343">343</a> 
-<a class="jxr_linenumber" name="344" href="#344">344</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="345" href="#345">345</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="346" href="#346">346</a>                               listener,
-<a class="jxr_linenumber" name="347" href="#347">347</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeDataChanged,
-<a class="jxr_linenumber" name="348" href="#348">348</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="349" href="#349">349</a>                               EXTERNAL_VIEW);
-<a class="jxr_linenumber" name="350" href="#350">350</a>     addListener(callbackHandler);
-<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>   @Override
-<a class="jxr_linenumber" name="354" href="#354">354</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/HelixDataAccessor.html">HelixDataAccessor</a> getHelixDataAccessor()
-<a class="jxr_linenumber" name="355" href="#355">355</a>   {
-<a class="jxr_linenumber" name="356" href="#356">356</a>     checkConnected();
-<a class="jxr_linenumber" name="357" href="#357">357</a>     <strong class="jxr_keyword">return</strong> _helixAccessor;
-<a class="jxr_linenumber" name="358" href="#358">358</a>   }
-<a class="jxr_linenumber" name="359" href="#359">359</a> 
-<a class="jxr_linenumber" name="360" href="#360">360</a>   @Override
-<a class="jxr_linenumber" name="361" href="#361">361</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/ConfigAccessor.html">ConfigAccessor</a> getConfigAccessor()
-<a class="jxr_linenumber" name="362" href="#362">362</a>   {
-<a class="jxr_linenumber" name="363" href="#363">363</a>     checkConnected();
-<a class="jxr_linenumber" name="364" href="#364">364</a>     <strong class="jxr_keyword">return</strong> _configAccessor;
-<a class="jxr_linenumber" name="365" href="#365">365</a>   }
-<a class="jxr_linenumber" name="366" href="#366">366</a> 
-<a class="jxr_linenumber" name="367" href="#367">367</a>   @Override
-<a class="jxr_linenumber" name="368" href="#368">368</a>   <strong class="jxr_keyword">public</strong> String getClusterName()
-<a class="jxr_linenumber" name="369" href="#369">369</a>   {
-<a class="jxr_linenumber" name="370" href="#370">370</a>     <strong class="jxr_keyword">return</strong> _clusterName;
-<a class="jxr_linenumber" name="371" href="#371">371</a>   }
-<a class="jxr_linenumber" name="372" href="#372">372</a> 
-<a class="jxr_linenumber" name="373" href="#373">373</a>   @Override
-<a class="jxr_linenumber" name="374" href="#374">374</a>   <strong class="jxr_keyword">public</strong> String getInstanceName()
-<a class="jxr_linenumber" name="375" href="#375">375</a>   {
-<a class="jxr_linenumber" name="376" href="#376">376</a>     <strong class="jxr_keyword">return</strong> _instanceName;
-<a class="jxr_linenumber" name="377" href="#377">377</a>   }
-<a class="jxr_linenumber" name="378" href="#378">378</a> 
-<a class="jxr_linenumber" name="379" href="#379">379</a>   @Override
-<a class="jxr_linenumber" name="380" href="#380">380</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> connect() <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="381" href="#381">381</a>   {
-<a class="jxr_linenumber" name="382" href="#382">382</a>     logger.info(<span class="jxr_string">"ClusterManager.connect()"</span>);
-<a class="jxr_linenumber" name="383" href="#383">383</a>     <strong class="jxr_keyword">if</strong> (_zkStateChangeListener.isConnected())
-<a class="jxr_linenumber" name="384" href="#384">384</a>     {
-<a class="jxr_linenumber" name="385" href="#385">385</a>       logger.warn(<span class="jxr_string">"Cluster manager "</span> + _clusterName + <span class="jxr_string">" "</span> + _instanceName
-<a class="jxr_linenumber" name="386" href="#386">386</a>           + <span class="jxr_string">" already connected"</span>);
-<a class="jxr_linenumber" name="387" href="#387">387</a>       <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="388" href="#388">388</a>     }
-<a class="jxr_linenumber" name="389" href="#389">389</a> 
-<a class="jxr_linenumber" name="390" href="#390">390</a>     <strong class="jxr_keyword">try</strong>
-<a class="jxr_linenumber" name="391" href="#391">391</a>     {
-<a class="jxr_linenumber" name="392" href="#392">392</a>       createClient(_zkConnectString);
-<a class="jxr_linenumber" name="393" href="#393">393</a>       _messagingService.onConnected();
-<a class="jxr_linenumber" name="394" href="#394">394</a>     }
-<a class="jxr_linenumber" name="395" href="#395">395</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
-<a class="jxr_linenumber" name="396" href="#396">396</a>     {
-<a class="jxr_linenumber" name="397" href="#397">397</a>       logger.error(e);
-<a class="jxr_linenumber" name="398" href="#398">398</a>       disconnect();
-<a class="jxr_linenumber" name="399" href="#399">399</a>       <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="400" href="#400">400</a>     }
-<a class="jxr_linenumber" name="401" href="#401">401</a>   }
-<a class="jxr_linenumber" name="402" href="#402">402</a> 
-<a class="jxr_linenumber" name="403" href="#403">403</a>   @Override
-<a class="jxr_linenumber" name="404" href="#404">404</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> disconnect()
-<a class="jxr_linenumber" name="405" href="#405">405</a>   {
+<a class="jxr_linenumber" name="218" href="#218">218</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> isInstanceSetup()
+<a class="jxr_linenumber" name="219" href="#219">219</a>   {
+<a class="jxr_linenumber" name="220" href="#220">220</a>     <strong class="jxr_keyword">if</strong> (_instanceType == InstanceType.PARTICIPANT
+<a class="jxr_linenumber" name="221" href="#221">221</a>         || _instanceType == InstanceType.CONTROLLER_PARTICIPANT)
+<a class="jxr_linenumber" name="222" href="#222">222</a>     {
+<a class="jxr_linenumber" name="223" href="#223">223</a>       <strong class="jxr_keyword">boolean</strong> isValid =
+<a class="jxr_linenumber" name="224" href="#224">224</a>           _zkClient.exists(PropertyPathConfig.getPath(PropertyType.CONFIGS,
+<a class="jxr_linenumber" name="225" href="#225">225</a>                                                       _clusterName,
+<a class="jxr_linenumber" name="226" href="#226">226</a>                                                       ConfigScopeProperty.PARTICIPANT.toString(),
+<a class="jxr_linenumber" name="227" href="#227">227</a>                                                       _instanceName))
+<a class="jxr_linenumber" name="228" href="#228">228</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.MESSAGES,
+<a class="jxr_linenumber" name="229" href="#229">229</a>                                                              _clusterName,
+<a class="jxr_linenumber" name="230" href="#230">230</a>                                                              _instanceName))
+<a class="jxr_linenumber" name="231" href="#231">231</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.CURRENTSTATES,
+<a class="jxr_linenumber" name="232" href="#232">232</a>                                                              _clusterName,
+<a class="jxr_linenumber" name="233" href="#233">233</a>                                                              _instanceName))
+<a class="jxr_linenumber" name="234" href="#234">234</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.STATUSUPDATES,
+<a class="jxr_linenumber" name="235" href="#235">235</a>                                                              _clusterName,
+<a class="jxr_linenumber" name="236" href="#236">236</a>                                                              _instanceName))
+<a class="jxr_linenumber" name="237" href="#237">237</a>               &amp;&amp; _zkClient.exists(PropertyPathConfig.getPath(PropertyType.ERRORS,
+<a class="jxr_linenumber" name="238" href="#238">238</a>                                                              _clusterName,
+<a class="jxr_linenumber" name="239" href="#239">239</a>                                                              _instanceName));
+<a class="jxr_linenumber" name="240" href="#240">240</a> 
+<a class="jxr_linenumber" name="241" href="#241">241</a>       <strong class="jxr_keyword">return</strong> isValid;
+<a class="jxr_linenumber" name="242" href="#242">242</a>     }
+<a class="jxr_linenumber" name="243" href="#243">243</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="244" href="#244">244</a>   }
+<a class="jxr_linenumber" name="245" href="#245">245</a> 
+<a class="jxr_linenumber" name="246" href="#246">246</a>   @Override
+<a class="jxr_linenumber" name="247" href="#247">247</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addIdealStateChangeListener(<strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/helix/IdealStateChangeListener.html">IdealStateChangeListener</a> listener) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="248" href="#248">248</a>   {
+<a class="jxr_linenumber" name="249" href="#249">249</a>     logger.info(<span class="jxr_string">"ClusterManager.addIdealStateChangeListener()"</span>);
+<a class="jxr_linenumber" name="250" href="#250">250</a>     checkConnected();
+<a class="jxr_linenumber" name="251" href="#251">251</a>     <strong class="jxr_keyword">final</strong> String path =
+<a class="jxr_linenumber" name="252" href="#252">252</a>         PropertyPathConfig.getPath(PropertyType.IDEALSTATES, _clusterName);
+<a class="jxr_linenumber" name="253" href="#253">253</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="254" href="#254">254</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="255" href="#255">255</a>                               listener,
+<a class="jxr_linenumber" name="256" href="#256">256</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeDataChanged,
+<a class="jxr_linenumber" name="257" href="#257">257</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
+<a class="jxr_linenumber" name="258" href="#258">258</a>                               IDEAL_STATE);
+<a class="jxr_linenumber" name="259" href="#259">259</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="260" href="#260">260</a>   }
+<a class="jxr_linenumber" name="261" href="#261">261</a> 
+<a class="jxr_linenumber" name="262" href="#262">262</a>   @Override
+<a class="jxr_linenumber" name="263" href="#263">263</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addLiveInstanceChangeListener(<a href="../../../../../org/apache/helix/LiveInstanceChangeListener.html">LiveInstanceChangeListener</a> listener) <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="264" href="#264">264</a>   {
+<a class="jxr_linenumber" name="265" href="#265">265</a>     logger.info(<span class="jxr_string">"ClusterManager.addLiveInstanceChangeListener()"</span>);
+<a class="jxr_linenumber" name="266" href="#266">266</a>     checkConnected();
+<a class="jxr_linenumber" name="267" href="#267">267</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().liveInstances().getPath();
+<a class="jxr_linenumber" name="268" href="#268">268</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="269" href="#269">269</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="270" href="#270">270</a>                               listener,
+<a class="jxr_linenumber" name="271" href="#271">271</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeDataChanged, EventType.NodeChildrenChanged,
+<a class="jxr_linenumber" name="272" href="#272">272</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
+<a class="jxr_linenumber" name="273" href="#273">273</a>                               LIVE_INSTANCE);
+<a class="jxr_linenumber" name="274" href="#274">274</a>     addListener(callbackHandler);
+<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>   @Override
+<a class="jxr_linenumber" name="278" href="#278">278</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addConfigChangeListener(<a href="../../../../../org/apache/helix/ConfigChangeListener.html">ConfigChangeListener</a> listener)
+<a class="jxr_linenumber" name="279" href="#279">279</a>   {
+<a class="jxr_linenumber" name="280" href="#280">280</a>     logger.info(<span class="jxr_string">"ClusterManager.addConfigChangeListener()"</span>);
+<a class="jxr_linenumber" name="281" href="#281">281</a>     checkConnected();
+<a class="jxr_linenumber" name="282" href="#282">282</a>     <strong class="jxr_keyword">final</strong> String path =
+<a class="jxr_linenumber" name="283" href="#283">283</a>         PropertyPathConfig.getPath(PropertyType.CONFIGS,
+<a class="jxr_linenumber" name="284" href="#284">284</a>                                    _clusterName,
+<a class="jxr_linenumber" name="285" href="#285">285</a>                                    ConfigScopeProperty.PARTICIPANT.toString());
+<a class="jxr_linenumber" name="286" href="#286">286</a> 
+<a class="jxr_linenumber" name="287" href="#287">287</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="288" href="#288">288</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="289" href="#289">289</a>                               listener,
+<a class="jxr_linenumber" name="290" href="#290">290</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged },
+<a class="jxr_linenumber" name="291" href="#291">291</a>                               CONFIG);
+<a class="jxr_linenumber" name="292" href="#292">292</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="293" href="#293">293</a> 
+<a class="jxr_linenumber" name="294" href="#294">294</a>   }
+<a class="jxr_linenumber" name="295" href="#295">295</a> 
+<a class="jxr_linenumber" name="296" href="#296">296</a>   <em class="jxr_comment">// TODO: Decide if do we still need this since we are exposing</em>
+<a class="jxr_linenumber" name="297" href="#297">297</a>   <em class="jxr_comment">// ClusterMessagingService</em>
+<a class="jxr_linenumber" name="298" href="#298">298</a>   @Override
+<a class="jxr_linenumber" name="299" href="#299">299</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addMessageListener(<a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> listener, String instanceName)
+<a class="jxr_linenumber" name="300" href="#300">300</a>   {
+<a class="jxr_linenumber" name="301" href="#301">301</a>     logger.info(<span class="jxr_string">"ClusterManager.addMessageListener() "</span> + instanceName);
+<a class="jxr_linenumber" name="302" href="#302">302</a>     checkConnected();
+<a class="jxr_linenumber" name="303" href="#303">303</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().messages(instanceName).getPath();
+<a class="jxr_linenumber" name="304" href="#304">304</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="305" href="#305">305</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="306" href="#306">306</a>                               listener,
+<a class="jxr_linenumber" name="307" href="#307">307</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
+<a class="jxr_linenumber" name="308" href="#308">308</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
+<a class="jxr_linenumber" name="309" href="#309">309</a>                               MESSAGE);
+<a class="jxr_linenumber" name="310" href="#310">310</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="311" href="#311">311</a>   }
+<a class="jxr_linenumber" name="312" href="#312">312</a> 
+<a class="jxr_linenumber" name="313" href="#313">313</a>   <strong class="jxr_keyword">void</strong> addControllerMessageListener(<a href="../../../../../org/apache/helix/MessageListener.html">MessageListener</a> listener)
+<a class="jxr_linenumber" name="314" href="#314">314</a>   {
+<a class="jxr_linenumber" name="315" href="#315">315</a>     logger.info(<span class="jxr_string">"ClusterManager.addControllerMessageListener()"</span>);
+<a class="jxr_linenumber" name="316" href="#316">316</a>     checkConnected();
+<a class="jxr_linenumber" name="317" href="#317">317</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().controllerMessages().getPath();
+<a class="jxr_linenumber" name="318" href="#318">318</a> 
+<a class="jxr_linenumber" name="319" href="#319">319</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="320" href="#320">320</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="321" href="#321">321</a>                               listener,
+<a class="jxr_linenumber" name="322" href="#322">322</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
+<a class="jxr_linenumber" name="323" href="#323">323</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
+<a class="jxr_linenumber" name="324" href="#324">324</a>                               MESSAGES_CONTROLLER);
+<a class="jxr_linenumber" name="325" href="#325">325</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="326" href="#326">326</a>   }
+<a class="jxr_linenumber" name="327" href="#327">327</a> 
+<a class="jxr_linenumber" name="328" href="#328">328</a>   @Override
+<a class="jxr_linenumber" name="329" href="#329">329</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addCurrentStateChangeListener(<a href="../../../../../org/apache/helix/CurrentStateChangeListener.html">CurrentStateChangeListener</a> listener,
+<a class="jxr_linenumber" name="330" href="#330">330</a>                                             String instanceName,
+<a class="jxr_linenumber" name="331" href="#331">331</a>                                             String sessionId)
+<a class="jxr_linenumber" name="332" href="#332">332</a>   {
+<a class="jxr_linenumber" name="333" href="#333">333</a>     logger.info(<span class="jxr_string">"ClusterManager.addCurrentStateChangeListener() "</span> + instanceName + <span class="jxr_string">" "</span>
+<a class="jxr_linenumber" name="334" href="#334">334</a>         + sessionId);
+<a class="jxr_linenumber" name="335" href="#335">335</a>     checkConnected();
+<a class="jxr_linenumber" name="336" href="#336">336</a>     <strong class="jxr_keyword">final</strong> String path =
+<a class="jxr_linenumber" name="337" href="#337">337</a>         _helixAccessor.keyBuilder().currentStates(instanceName, sessionId).getPath();
+<a class="jxr_linenumber" name="338" href="#338">338</a> 
+<a class="jxr_linenumber" name="339" href="#339">339</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="340" href="#340">340</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="341" href="#341">341</a>                               listener,
+<a class="jxr_linenumber" name="342" href="#342">342</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
+<a class="jxr_linenumber" name="343" href="#343">343</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
+<a class="jxr_linenumber" name="344" href="#344">344</a>                               CURRENT_STATE);
+<a class="jxr_linenumber" name="345" href="#345">345</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="346" href="#346">346</a>   }
+<a class="jxr_linenumber" name="347" href="#347">347</a> 
+<a class="jxr_linenumber" name="348" href="#348">348</a>   @Override
+<a class="jxr_linenumber" name="349" href="#349">349</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addHealthStateChangeListener(<a href="../../../../../org/apache/helix/HealthStateChangeListener.html">HealthStateChangeListener</a> listener,
+<a class="jxr_linenumber" name="350" href="#350">350</a>                                            String instanceName)
+<a class="jxr_linenumber" name="351" href="#351">351</a>   {
+<a class="jxr_linenumber" name="352" href="#352">352</a>     <em class="jxr_comment">// System.out.println("ZKClusterManager.addHealthStateChangeListener()");</em>
+<a class="jxr_linenumber" name="353" href="#353">353</a>     <em class="jxr_comment">// TODO: re-form this for stats checking</em>
+<a class="jxr_linenumber" name="354" href="#354">354</a>     logger.info(<span class="jxr_string">"ClusterManager.addHealthStateChangeListener()"</span> + instanceName);
+<a class="jxr_linenumber" name="355" href="#355">355</a>     checkConnected();
+<a class="jxr_linenumber" name="356" href="#356">356</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().healthReports(instanceName).getPath();
+<a class="jxr_linenumber" name="357" href="#357">357</a> 
+<a class="jxr_linenumber" name="358" href="#358">358</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="359" href="#359">359</a>         createCallBackHandler(path, listener, <strong class="jxr_keyword">new</strong> EventType[] {
+<a class="jxr_linenumber" name="360" href="#360">360</a>             EventType.NodeChildrenChanged, EventType.NodeDataChanged,
+<a class="jxr_linenumber" name="361" href="#361">361</a>             EventType.NodeDeleted, EventType.NodeCreated }, HEALTH);
+<a class="jxr_linenumber" name="362" href="#362">362</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="363" href="#363">363</a>   }
+<a class="jxr_linenumber" name="364" href="#364">364</a> 
+<a class="jxr_linenumber" name="365" href="#365">365</a>   @Override
+<a class="jxr_linenumber" name="366" href="#366">366</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addExternalViewChangeListener(<a href="../../../../../org/apache/helix/ExternalViewChangeListener.html">ExternalViewChangeListener</a> listener)
+<a class="jxr_linenumber" name="367" href="#367">367</a>   {
+<a class="jxr_linenumber" name="368" href="#368">368</a>     logger.info(<span class="jxr_string">"ClusterManager.addExternalViewChangeListener()"</span>);
+<a class="jxr_linenumber" name="369" href="#369">369</a>     checkConnected();
+<a class="jxr_linenumber" name="370" href="#370">370</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().externalViews().getPath();
+<a class="jxr_linenumber" name="371" href="#371">371</a> 
+<a class="jxr_linenumber" name="372" href="#372">372</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
+<a class="jxr_linenumber" name="373" href="#373">373</a>         createCallBackHandler(path,
+<a class="jxr_linenumber" name="374" href="#374">374</a>                               listener,
+<a class="jxr_linenumber" name="375" href="#375">375</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeDataChanged,
+<a class="jxr_linenumber" name="376" href="#376">376</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
+<a class="jxr_linenumber" name="377" href="#377">377</a>                               EXTERNAL_VIEW);
+<a class="jxr_linenumber" name="378" href="#378">378</a>     addListener(callbackHandler);
+<a class="jxr_linenumber" name="379" href="#379">379</a>   }
+<a class="jxr_linenumber" name="380" href="#380">380</a> 
+<a class="jxr_linenumber" name="381" href="#381">381</a>   @Override
+<a class="jxr_linenumber" name="382" href="#382">382</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/HelixDataAccessor.html">HelixDataAccessor</a> getHelixDataAccessor()
+<a class="jxr_linenumber" name="383" href="#383">383</a>   {
+<a class="jxr_linenumber" name="384" href="#384">384</a>     checkConnected();
+<a class="jxr_linenumber" name="385" href="#385">385</a>     <strong class="jxr_keyword">return</strong> _helixAccessor;
+<a class="jxr_linenumber" name="386" href="#386">386</a>   }
+<a class="jxr_linenumber" name="387" href="#387">387</a> 
+<a class="jxr_linenumber" name="388" href="#388">388</a>   @Override
+<a class="jxr_linenumber" name="389" href="#389">389</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/helix/ConfigAccessor.html">ConfigAccessor</a> getConfigAccessor()
+<a class="jxr_linenumber" name="390" href="#390">390</a>   {
+<a class="jxr_linenumber" name="391" href="#391">391</a>     checkConnected();
+<a class="jxr_linenumber" name="392" href="#392">392</a>     <strong class="jxr_keyword">return</strong> _configAccessor;
+<a class="jxr_linenumber" name="393" href="#393">393</a>   }
+<a class="jxr_linenumber" name="394" href="#394">394</a> 
+<a class="jxr_linenumber" name="395" href="#395">395</a>   @Override
+<a class="jxr_linenumber" name="396" href="#396">396</a>   <strong class="jxr_keyword">public</strong> String getClusterName()
+<a class="jxr_linenumber" name="397" href="#397">397</a>   {
+<a class="jxr_linenumber" name="398" href="#398">398</a>     <strong class="jxr_keyword">return</strong> _clusterName;
+<a class="jxr_linenumber" name="399" href="#399">399</a>   }
+<a class="jxr_linenumber" name="400" href="#400">400</a> 
+<a class="jxr_linenumber" name="401" href="#401">401</a>   @Override
+<a class="jxr_linenumber" name="402" href="#402">402</a>   <strong class="jxr_keyword">public</strong> String getInstanceName()
+<a class="jxr_linenumber" name="403" href="#403">403</a>   {
+<a class="jxr_linenumber" name="404" href="#404">404</a>     <strong class="jxr_keyword">return</strong> _instanceName;
+<a class="jxr_linenumber" name="405" href="#405">405</a>   }
 <a class="jxr_linenumber" name="406" href="#406">406</a> 
-<a class="jxr_linenumber" name="407" href="#407">407</a>     <strong class="jxr_keyword">if</strong> (!isConnected())
-<a class="jxr_linenumber" name="408" href="#408">408</a>     {
-<a class="jxr_linenumber" name="409" href="#409">409</a>       logger.warn(<span class="jxr_string">"ClusterManager "</span> + _instanceName + <span class="jxr_string">" already disconnected"</span>);
-<a class="jxr_linenumber" name="410" href="#410">410</a>       <strong class="jxr_keyword">return</strong>;
-<a class="jxr_linenumber" name="411" href="#411">411</a>     }
-<a class="jxr_linenumber" name="412" href="#412">412</a> 
-<a class="jxr_linenumber" name="413" href="#413">413</a>     logger.info(<span class="jxr_string">"disconnect "</span> + _instanceName + <span class="jxr_string">"("</span> + _instanceType + <span class="jxr_string">") from "</span>
-<a class="jxr_linenumber" name="414" href="#414">414</a>         + _clusterName);
-<a class="jxr_linenumber" name="415" href="#415">415</a> 
-<a class="jxr_linenumber" name="416" href="#416">416</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="417" href="#417">417</a> <em class="jxr_javadoccomment">     * shutdown thread pool first to avoid reset() being invoked in the middle of state</em>
-<a class="jxr_linenumber" name="418" href="#418">418</a> <em class="jxr_javadoccomment">     * transition</em>
-<a class="jxr_linenumber" name="419" href="#419">419</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="420" href="#420">420</a>     _messagingService.getExecutor().shutDown();
-<a class="jxr_linenumber" name="421" href="#421">421</a>     resetHandlers();
-<a class="jxr_linenumber" name="422" href="#422">422</a> 
-<a class="jxr_linenumber" name="423" href="#423">423</a>     _helixAccessor.shutdown();
-<a class="jxr_linenumber" name="424" href="#424">424</a> 
-<a class="jxr_linenumber" name="425" href="#425">425</a>     <strong class="jxr_keyword">if</strong> (_leaderElectionHandler != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="426" href="#426">426</a>     {
-<a class="jxr_linenumber" name="427" href="#427">427</a>       _leaderElectionHandler.reset();
+<a class="jxr_linenumber" name="407" href="#407">407</a>   @Override
+<a class="jxr_linenumber" name="408" href="#408">408</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> connect() <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="409" href="#409">409</a>   {
+<a class="jxr_linenumber" name="410" href="#410">410</a>     logger.info(<span class="jxr_string">"ClusterManager.connect()"</span>);
+<a class="jxr_linenumber" name="411" href="#411">411</a>     <strong class="jxr_keyword">if</strong> (_zkStateChangeListener.isConnected())
+<a class="jxr_linenumber" name="412" href="#412">412</a>     {
+<a class="jxr_linenumber" name="413" href="#413">413</a>       logger.warn(<span class="jxr_string">"Cluster manager "</span> + _clusterName + <span class="jxr_string">" "</span> + _instanceName
+<a class="jxr_linenumber" name="414" href="#414">414</a>           + <span class="jxr_string">" already connected"</span>);
+<a class="jxr_linenumber" name="415" href="#415">415</a>       <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="416" href="#416">416</a>     }
+<a class="jxr_linenumber" name="417" href="#417">417</a> 
+<a class="jxr_linenumber" name="418" href="#418">418</a>     <strong class="jxr_keyword">try</strong>
+<a class="jxr_linenumber" name="419" href="#419">419</a>     {
+<a class="jxr_linenumber" name="420" href="#420">420</a>       createClient(_zkConnectString);
+<a class="jxr_linenumber" name="421" href="#421">421</a>       _messagingService.onConnected();
+<a class="jxr_linenumber" name="422" href="#422">422</a>     }
+<a class="jxr_linenumber" name="423" href="#423">423</a>     <strong class="jxr_keyword">catch</strong> (Exception e)
+<a class="jxr_linenumber" name="424" href="#424">424</a>     {
+<a class="jxr_linenumber" name="425" href="#425">425</a>       logger.error(e);
+<a class="jxr_linenumber" name="426" href="#426">426</a>       disconnect();
+<a class="jxr_linenumber" name="427" href="#427">427</a>       <strong class="jxr_keyword">throw</strong> e;
 <a class="jxr_linenumber" name="428" href="#428">428</a>     }
-<a class="jxr_linenumber" name="429" href="#429">429</a> 
-<a class="jxr_linenumber" name="430" href="#430">430</a>     <strong class="jxr_keyword">if</strong> (_participantHealthCheckInfoCollector != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="431" href="#431">431</a>     {
-<a class="jxr_linenumber" name="432" href="#432">432</a>       _participantHealthCheckInfoCollector.stop();
-<a class="jxr_linenumber" name="433" href="#433">433</a>     }
-<a class="jxr_linenumber" name="434" href="#434">434</a> 
-<a class="jxr_linenumber" name="435" href="#435">435</a>     <strong class="jxr_keyword">if</strong> (_timer != <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="436" href="#436">436</a>     {
-<a class="jxr_linenumber" name="437" href="#437">437</a>       _timer.cancel();
-<a class="jxr_linenumber" name="438" href="#438">438</a>       _timer = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="439" href="#439">439</a>     }
-<a class="jxr_linenumber" name="440" href="#440">440</a> 
-<a class="jxr_linenumber" name="441" href="#441">441</a>     <strong class="jxr_keyword">if</strong> (_instanceType == InstanceType.CONTROLLER)
-<a class="jxr_linenumber" name="442" href="#442">442</a>     {
-<a class="jxr_linenumber" name="443" href="#443">443</a>       stopTimerTasks();
-<a class="jxr_linenumber" name="444" href="#444">444</a>     }
-<a class="jxr_linenumber" name="445" href="#445">445</a> 
-<a class="jxr_linenumber" name="446" href="#446">446</a>     <em class="jxr_comment">// unsubscribe accessor from controllerChange</em>
-<a class="jxr_linenumber" name="447" href="#447">447</a>     _zkClient.unsubscribeAll();
+<a class="jxr_linenumber" name="429" href="#429">429</a>   }
+<a class="jxr_linenumber" name="430" href="#430">430</a> 
+<a class="jxr_linenumber" name="431" href="#431">431</a>   @Override
+<a class="jxr_linenumber" name="432" href="#432">432</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> disconnect()
+<a class="jxr_linenumber" name="433" href="#433">433</a>   {
+<a class="jxr_linenumber" name="434" href="#434">434</a>     <strong class="jxr_keyword">if</strong> (!isConnected())
+<a class="jxr_linenumber" name="435" href="#435">435</a>     {
+<a class="jxr_linenumber" name="436" href="#436">436</a>       logger.error(<span class="jxr_string">"ClusterManager "</span> + _instanceName + <span class="jxr_string">" already disconnected"</span>);
+<a class="jxr_linenumber" name="437" href="#437">437</a>       <strong class="jxr_keyword">return</strong>;
+<a class="jxr_linenumber" name="438" href="#438">438</a>     }
+<a class="jxr_linenumber" name="439" href="#439">439</a>     disconnectInternal();
+<a class="jxr_linenumber" name="440" href="#440">440</a>   }
+<a class="jxr_linenumber" name="441" href="#441">441</a>   
+<a class="jxr_linenumber" name="442" href="#442">442</a>   <strong class="jxr_keyword">void</strong> disconnectInternal()
+<a class="jxr_linenumber" name="443" href="#443">443</a>   {
+<a class="jxr_linenumber" name="444" href="#444">444</a>     <em class="jxr_comment">// This function can be called when the connection are in bad state(e.g. flapping), </em>
+<a class="jxr_linenumber" name="445" href="#445">445</a>     <em class="jxr_comment">// in which isConnected() could be false and we want to disconnect from cluster.</em>
+<a class="jxr_linenumber" name="446" href="#446">446</a>     logger.info(<span class="jxr_string">"disconnect "</span> + _instanceName + <span class="jxr_string">"("</span> + _instanceType + <span class="jxr_string">") from "</span>
+<a class="jxr_linenumber" name="447" href="#447">447</a>         + _clusterName);
 <a class="jxr_linenumber" name="448" href="#448">448</a> 
-<a class="jxr_linenumber" name="449" href="#449">449</a>     _zkClient.close();
-<a class="jxr_linenumber" name="450" href="#450">450</a> 
-<a class="jxr_linenumber" name="451" href="#451">451</a>     <em class="jxr_comment">// HACK seems that zkClient is not sending DISCONNECT event</em>
-<a class="jxr_linenumber" name="452" href="#452">452</a>     _zkStateChangeListener.disconnect();
-<a class="jxr_linenumber" name="453" href="#453">453</a>     logger.info(<span class="jxr_string">"Cluster manager: "</span> + _instanceName + <span class="jxr_string">" disconnected"</span>);
-<a class="jxr_linenumber" name="454" href="#454">454</a>   }
+<a class="jxr_linenumber" name="449" href="#449">449</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="450" href="#450">450</a> <em class="jxr_javadoccomment">     * shutdown thread pool first to avoid reset() being invoked in the middle of state</em>
+<a class="jxr_linenumber" name="451" href="#451">451</a> <em class="jxr_javadoccomment">     * transition</em>
+<a class="jxr_linenumber" name="452" href="#452">452</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="453" href="#453">453</a>     _messagingService.getExecutor().shutDown();
+<a class="jxr_linenumber" name="454" href="#454">454</a>     resetHandlers();
 <a class="jxr_linenumber" name="455" href="#455">455</a> 
-<a class="jxr_linenumber" name="456" href="#456">456</a>   @Override
-<a class="jxr_linenumber" name="457" href="#457">457</a>   <strong class="jxr_keyword">public</strong> String getSessionId()
-<a class="jxr_linenumber" name="458" href="#458">458</a>   {
-<a class="jxr_linenumber" name="459" href="#459">459</a>     checkConnected();
-<a class="jxr_linenumber" name="460" href="#460">460</a>     <strong class="jxr_keyword">return</strong> _sessionId;
-<a class="jxr_linenumber" name="461" href="#461">461</a>   }
+<a class="jxr_linenumber" name="456" href="#456">456</a>     _helixAccessor.shutdown();
+<a class="jxr_linenumber" name="457" href="#457">457</a> 
+<a class="jxr_linenumber" name="458" href="#458">458</a>     <strong class="jxr_keyword">if</strong> (_leaderElectionHandler != <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="459" href="#459">459</a>     {
+<a class="jxr_linenumber" name="460" href="#460">460</a>       _leaderElectionHandler.reset();
+<a class="jxr_linenumber" name="461" href="#461">461</a>     }
 <a class="jxr_linenumber" name="462" href="#462">462</a> 
-<a class="jxr_linenumber" name="463" href="#463">463</a>   @Override
-<a class="jxr_linenumber" name="464" href="#464">464</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isConnected()
-<a class="jxr_linenumber" name="465" href="#465">465</a>   {
-<a class="jxr_linenumber" name="466" href="#466">466</a>     <strong class="jxr_keyword">return</strong> _zkStateChangeListener.isConnected();
-<a class="jxr_linenumber" name="467" href="#467">467</a>   }
-<a class="jxr_linenumber" name="468" href="#468">468</a> 
-<a class="jxr_linenumber" name="469" href="#469">469</a>   @Override
-<a class="jxr_linenumber" name="470" href="#470">470</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getLastNotificationTime()
-<a class="jxr_linenumber" name="471" href="#471">471</a>   {
-<a class="jxr_linenumber" name="472" href="#472">472</a>     <strong class="jxr_keyword">return</strong> -1;
-<a class="jxr_linenumber" name="473" href="#473">473</a>   }
-<a class="jxr_linenumber" name="474" href="#474">474</a> 
-<a class="jxr_linenumber" name="475" href="#475">475</a>   @Override
-<a class="jxr_linenumber" name="476" href="#476">476</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addControllerListener(<a href="../../../../../org/apache/helix/ControllerChangeListener.html">ControllerChangeListener</a> listener)
-<a class="jxr_linenumber" name="477" href="#477">477</a>   {
-<a class="jxr_linenumber" name="478" href="#478">478</a>     checkConnected();
-<a class="jxr_linenumber" name="479" href="#479">479</a>     <strong class="jxr_keyword">final</strong> String path = _helixAccessor.keyBuilder().controller().getPath();
-<a class="jxr_linenumber" name="480" href="#480">480</a>     logger.info(<span class="jxr_string">"Add controller listener at: "</span> + path);
-<a class="jxr_linenumber" name="481" href="#481">481</a>     <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> callbackHandler =
-<a class="jxr_linenumber" name="482" href="#482">482</a>         createCallBackHandler(path,
-<a class="jxr_linenumber" name="483" href="#483">483</a>                               listener,
-<a class="jxr_linenumber" name="484" href="#484">484</a>                               <strong class="jxr_keyword">new</strong> EventType[] { EventType.NodeChildrenChanged,
-<a class="jxr_linenumber" name="485" href="#485">485</a>                                   EventType.NodeDeleted, EventType.NodeCreated },
-<a class="jxr_linenumber" name="486" href="#486">486</a>                               ChangeType.CONTROLLER);
-<a class="jxr_linenumber" name="487" href="#487">487</a> 
-<a class="jxr_linenumber" name="488" href="#488">488</a>     <em class="jxr_comment">// System.out.println("add controller listeners to " + _instanceName +</em>
-<a class="jxr_linenumber" name="489" href="#489">489</a>     <em class="jxr_comment">// " for " + _clusterName);</em>
-<a class="jxr_linenumber" name="490" href="#490">490</a>     <em class="jxr_comment">// _handlers.add(callbackHandler);</em>
-<a class="jxr_linenumber" name="491" href="#491">491</a>     addListener(callbackHandler);
-<a class="jxr_linenumber" name="492" href="#492">492</a>   }
-<a class="jxr_linenumber" name="493" href="#493">493</a> 
-<a class="jxr_linenumber" name="494" href="#494">494</a>   @Override
-<a class="jxr_linenumber" name="495" href="#495">495</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> removeListener(Object listener)
-<a class="jxr_linenumber" name="496" href="#496">496</a>   {
-<a class="jxr_linenumber" name="497" href="#497">497</a>     logger.info(<span class="jxr_string">"remove listener: "</span> + listener + <span class="jxr_string">" from "</span> + _instanceName);
-<a class="jxr_linenumber" name="498" href="#498">498</a> 
-<a class="jxr_linenumber" name="499" href="#499">499</a>     <strong class="jxr_keyword">synchronized</strong> (<strong class="jxr_keyword">this</strong>)
-<a class="jxr_linenumber" name="500" href="#500">500</a>     {
-<a class="jxr_linenumber" name="501" href="#501">501</a>       Iterator&lt;CallbackHandler&gt; iterator = _handlers.iterator();
-<a class="jxr_linenumber" name="502" href="#502">502</a>       <strong class="jxr_keyword">while</strong> (iterator.hasNext())
-<a class="jxr_linenumber" name="503" href="#503">503</a>       {
-<a class="jxr_linenumber" name="504" href="#504">504</a>         <a href="../../../../../org/apache/helix/manager/zk/CallbackHandler.html">CallbackHandler</a> handler = iterator.next();
-<a class="jxr_linenumber" name="505" href="#505">505</a>         <em class="jxr_comment">// simply compare reference</em>
-<a class="jxr_linenumber" name="506" href="#506">506</a>         <strong class="jxr_keyword">if</strong> (handler.getListener().equals(listener))
-<a class="jxr_linenumber" name="507" href="#507">507</a>         {
-<a class="jxr_linenumber" name="508" href="#508">508</a>           handler.reset();
-<a class="jxr_linenumber" name="509" href="#509">509</a>           iterator.remove();
-<a class="jxr_linenumber" name="510" href="#510">510</a>         }
-<a class="jxr_linenumber" name="511" href="#511">511</a>       }
-<a class="jxr_linenumber" name="512" href="#512">512</a>     }
-<a class="jxr_linenumber" name="513" href="#513">513</a> 
-<a class="jxr_linenumber" name="514" href="#514">514</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="515" href="#515">515</a>   }
-<a class="jxr_linenumber" name="516" href="#516">516</a> 
-<a class="jxr_linenumber" name="517" href="#517">517</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> addLiveInstance()
-<a class="jxr_linenumber" name="518" href="#518">518</a>   {
-<a class="jxr_linenumber" name="519" href="#519">519</a>     <a href="../../../../../org/apache/helix/model/LiveInstance.html">LiveInstance</a> liveInstance = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/model/LiveInstance.html">LiveInstance</a>(_instanceName);
-<a class="jxr_linenumber" name="520" href="#520">520</a>     liveInstance.setSessionId(_sessionId);
-<a class="jxr_linenumber" name="521" href="#521">521</a>     liveInstance.setHelixVersion(_version);
-<a class="jxr_linenumber" name="522" href="#522">522</a>     liveInstance.setLiveInstance(ManagementFactory.getRuntimeMXBean().getName());
-<a class="jxr_linenumber" name="523" href="#523">523</a> 
-<a class="jxr_linenumber" name="524" href="#524">524</a>     logger.info(<span class="jxr_string">"Add live instance: InstanceName: "</span> + _instanceName + <span class="jxr_string">" Session id:"</span>
-<a class="jxr_linenumber" name="525" href="#525">525</a>         + _sessionId);
-<a class="jxr_linenumber" name="526" href="#526">526</a>     <a href="../../../../../org/apache/helix/PropertyKey.html">Builder</a> keyBuilder = _helixAccessor.keyBuilder();
-<a class="jxr_linenumber" name="527" href="#527">527</a>     <strong class="jxr_keyword">if</strong> (!_helixAccessor.createProperty(keyBuilder.liveInstance(_instanceName),
-<a class="jxr_linenumber" name="528" href="#528">528</a>                                        liveInstance))
-<a class="jxr_linenumber" name="529" href="#529">529</a>     {
-<a class="jxr_linenumber" name="530" href="#530">530</a>       String errorMsg =
-<a class="jxr_linenumber" name="531" href="#531">531</a>           <span class="jxr_string">"Fail to create live instance node after waiting, so quit. instance:"</span>
-<a class="jxr_linenumber" name="532" href="#532">532</a>               + _instanceName;
-<a class="jxr_linenumber" name="533" href="#533">533</a>       logger.warn(errorMsg);
-<a class="jxr_linenumber" name="534" href="#534">534</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/HelixException.html">HelixException</a>(errorMsg);
-<a class="jxr_linenumber" name="535" href="#535">535</a> 
-<a class="jxr_linenumber" name="536" href="#536">536</a>     }
-<a class="jxr_linenumber" name="537" href="#537">537</a>     String currentStatePathParent =
-<a class="jxr_linenumber" name="538" href="#538">538</a>         PropertyPathConfig.getPath(PropertyType.CURRENTSTATES,
-<a class="jxr_linenumber" name="539" href="#539">539</a>                                    _clusterName,
-<a class="jxr_linenumber" name="540" href="#540">540</a>                                    _instanceName,
-<a class="jxr_linenumber" name="541" href="#541">541</a>                                    getSessionId());
-<a class="jxr_linenumber" name="542" href="#542">542</a> 
-<a class="jxr_linenumber" name="543" href="#543">543</a>     <strong class="jxr_keyword">if</strong> (!_zkClient.exists(currentStatePathParent))
-<a class="jxr_linenumber" name="544" href="#544">544</a>     {
-<a class="jxr_linenumber" name="545" href="#545">545</a>       _zkClient.createPersistent(currentStatePathParent);
-<a class="jxr_linenumber" name="546" href="#546">546</a>       logger.info(<span class="jxr_string">"Creating current state path "</span> + currentStatePathParent);
-<a class="jxr_linenumber" name="547" href="#547">547</a>     }
-<a class="jxr_linenumber" name="548" href="#548">548</a>   }
-<a class="jxr_linenumber" name="549" href="#549">549</a> 
-<a class="jxr_linenumber" name="550" href="#550">550</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> startStatusUpdatedumpTask()
-<a class="jxr_linenumber" name="551" href="#551">551</a>   {
-<a class="jxr_linenumber" name="552" href="#552">552</a>     <strong class="jxr_keyword">long</strong> initialDelay = 30 * 60 * 1000;
-<a class="jxr_linenumber" name="553" href="#553">553</a>     <strong class="jxr_keyword">long</strong> period = 120 * 60 * 1000;
-<a class="jxr_linenumber" name="554" href="#554">554</a>     <strong class="jxr_keyword">int</strong> timeThresholdNoChange = 180 * 60 * 1000;
-<a class="jxr_linenumber" name="555" href="#555">555</a> 
-<a class="jxr_linenumber" name="556" href="#556">556</a>     <strong class="jxr_keyword">if</strong> (_timer == <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="557" href="#557">557</a>     {
-<a class="jxr_linenumber" name="558" href="#558">558</a>       _timer = <strong class="jxr_keyword">new</strong> Timer(<strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="559" href="#559">559</a>       _timer.scheduleAtFixedRate(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/helix/monitoring/ZKPathDataDumpTask.html">ZKPathDataDumpTask</a>(<strong class="jxr_keyword">this</strong>,
-<a class="jxr_linenumber" name="560" href="#560">560</a>                                                         _zkClient,
-<a class="jxr_linenumber" name="561" href="#561">561</a>                                                         timeThresholdNoChange),
-<a class="jxr_linenumber" name="562" href="#562">562</a>                                  initialDelay,
-<a class="jxr_linenumber" name="563" href="#563">563</a>                                  period);
-<a class="jxr_linenumber" name="564" href="#564">564</a>     }
-<a class="jxr_linenumber" name="565" href="#565">565</a>   }
-<a class="jxr_linenumber" name="566" href="#566">566</a> 

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