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From kisho...@apache.org
Subject svn commit: r1479756 [31/39] - in /incubator/helix/site-content: ./ apidocs/reference/org/apache/helix/ apidocs/reference/org/apache/helix/agent/ apidocs/reference/org/apache/helix/manager/zk/ apidocs/reference/org/apache/helix/messaging/handling/ apid...
Date Tue, 07 May 2013 03:11:00 GMT
Modified: incubator/helix/site-content/xref-test/org/apache/helix/integration/TestZkCallbackHandlerLeak.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/xref-test/org/apache/helix/integration/TestZkCallbackHandlerLeak.html?rev=1479756&r1=1479755&r2=1479756&view=diff
==============================================================================
--- incubator/helix/site-content/xref-test/org/apache/helix/integration/TestZkCallbackHandlerLeak.html (original)
+++ incubator/helix/site-content/xref-test/org/apache/helix/integration/TestZkCallbackHandlerLeak.html Tue May  7 03:10:53 2013
@@ -34,305 +34,460 @@
 <a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
 <a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
 <a class="jxr_linenumber" name="26" href="#26">26</a>  
-<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.TestHelper;
-<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.ZkHelixTestManager;
-<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.ZkTestHelper;
-<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.ZkUnitTestBase;
-<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.manager.zk.CallbackHandler;
+<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.I0Itec.zkclient.IZkChildListener;
+<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.I0Itec.zkclient.IZkDataListener;
+<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.*;
+<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.manager.zk.CallbackHandler;
+<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.manager.zk.ZkClient;
 <a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.mock.controller.ClusterController;
 <a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.mock.participant.MockParticipant;
-<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.tools.ClusterStateVerifier;
-<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.testng.Assert;
-<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.testng.annotations.Test;
-<a class="jxr_linenumber" name="37" href="#37">37</a>  
-<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/helix/integration/TestZkCallbackHandlerLeak.html">TestZkCallbackHandlerLeak</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../org/apache/helix/ZkUnitTestBase.html">ZkUnitTestBase</a> {
-<a class="jxr_linenumber" name="39" href="#39">39</a>  	
-<a class="jxr_linenumber" name="40" href="#40">40</a>  	@Test
-<a class="jxr_linenumber" name="41" href="#41">41</a>  	<strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testCbHandlerLeakOnParticipantSessionExpiry() <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="42" href="#42">42</a>  	{
-<a class="jxr_linenumber" name="43" href="#43">43</a>  	    <em class="jxr_comment">// Logger.getRootLogger().setLevel(Level.INFO);</em>
-<a class="jxr_linenumber" name="44" href="#44">44</a>  	    String className = TestHelper.getTestClassName();
-<a class="jxr_linenumber" name="45" href="#45">45</a>  	    String methodName = TestHelper.getTestMethodName();
-<a class="jxr_linenumber" name="46" href="#46">46</a>  	    String clusterName = className + <span class="jxr_string">"_"</span> + methodName;
-<a class="jxr_linenumber" name="47" href="#47">47</a>  	    <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> n = 2;
-<a class="jxr_linenumber" name="48" href="#48">48</a>  
-<a class="jxr_linenumber" name="49" href="#49">49</a>  	    System.out.println(<span class="jxr_string">"START "</span> + clusterName + <span class="jxr_string">" at "</span>
-<a class="jxr_linenumber" name="50" href="#50">50</a>  	        + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
-<a class="jxr_linenumber" name="51" href="#51">51</a>  
-<a class="jxr_linenumber" name="52" href="#52">52</a>  	    TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, <em class="jxr_comment">// participant port</em>
-<a class="jxr_linenumber" name="53" href="#53">53</a>  	                            <span class="jxr_string">"localhost"</span>, <em class="jxr_comment">// participant name prefix</em>
-<a class="jxr_linenumber" name="54" href="#54">54</a>  	                            <span class="jxr_string">"TestDB"</span>, <em class="jxr_comment">// resource name prefix</em>
-<a class="jxr_linenumber" name="55" href="#55">55</a>  	                            1, <em class="jxr_comment">// resources</em>
-<a class="jxr_linenumber" name="56" href="#56">56</a>  	                            32, <em class="jxr_comment">// partitions per resource</em>
-<a class="jxr_linenumber" name="57" href="#57">57</a>  	                            n, <em class="jxr_comment">// number of nodes</em>
-<a class="jxr_linenumber" name="58" href="#58">58</a>  	                            2, <em class="jxr_comment">// replicas</em>
-<a class="jxr_linenumber" name="59" href="#59">59</a>  	                            <span class="jxr_string">"MasterSlave"</span>,
-<a class="jxr_linenumber" name="60" href="#60">60</a>  	                            <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// do rebalance</em>
-<a class="jxr_linenumber" name="61" href="#61">61</a>  	    
+<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.model.CurrentState;
+<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.apache.helix.tools.ClusterStateVerifier;
+<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.testng.Assert;
+<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> org.testng.annotations.Test;
+<a class="jxr_linenumber" name="38" href="#38">38</a>  
+<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/apache/helix/integration/TestZkCallbackHandlerLeak.html">TestZkCallbackHandlerLeak</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../org/apache/helix/ZkUnitTestBase.html">ZkUnitTestBase</a> {
+<a class="jxr_linenumber" name="40" href="#40">40</a>  	
+<a class="jxr_linenumber" name="41" href="#41">41</a>  	@Test
+<a class="jxr_linenumber" name="42" href="#42">42</a>  	<strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testCbHandlerLeakOnParticipantSessionExpiry() <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="43" href="#43">43</a>  	{
+<a class="jxr_linenumber" name="44" href="#44">44</a>  	    <em class="jxr_comment">// Logger.getRootLogger().setLevel(Level.INFO);</em>
+<a class="jxr_linenumber" name="45" href="#45">45</a>  	    String className = TestHelper.getTestClassName();
+<a class="jxr_linenumber" name="46" href="#46">46</a>  	    String methodName = TestHelper.getTestMethodName();
+<a class="jxr_linenumber" name="47" href="#47">47</a>  	    String clusterName = className + <span class="jxr_string">"_"</span> + methodName;
+<a class="jxr_linenumber" name="48" href="#48">48</a>  	    <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> n = 2;
+<a class="jxr_linenumber" name="49" href="#49">49</a>  
+<a class="jxr_linenumber" name="50" href="#50">50</a>  	    System.out.println(<span class="jxr_string">"START "</span> + clusterName + <span class="jxr_string">" at "</span>
+<a class="jxr_linenumber" name="51" href="#51">51</a>  	        + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
+<a class="jxr_linenumber" name="52" href="#52">52</a>  
+<a class="jxr_linenumber" name="53" href="#53">53</a>  	    TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, <em class="jxr_comment">// participant port</em>
+<a class="jxr_linenumber" name="54" href="#54">54</a>  	                            <span class="jxr_string">"localhost"</span>, <em class="jxr_comment">// participant name prefix</em>
+<a class="jxr_linenumber" name="55" href="#55">55</a>  	                            <span class="jxr_string">"TestDB"</span>, <em class="jxr_comment">// resource name prefix</em>
+<a class="jxr_linenumber" name="56" href="#56">56</a>  	                            1, <em class="jxr_comment">// resources</em>
+<a class="jxr_linenumber" name="57" href="#57">57</a>  	                            32, <em class="jxr_comment">// partitions per resource</em>
+<a class="jxr_linenumber" name="58" href="#58">58</a>  	                            n, <em class="jxr_comment">// number of nodes</em>
+<a class="jxr_linenumber" name="59" href="#59">59</a>  	                            2, <em class="jxr_comment">// replicas</em>
+<a class="jxr_linenumber" name="60" href="#60">60</a>  	                            <span class="jxr_string">"MasterSlave"</span>,
+<a class="jxr_linenumber" name="61" href="#61">61</a>  	                            <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// do rebalance</em>
 <a class="jxr_linenumber" name="62" href="#62">62</a>  	    
-<a class="jxr_linenumber" name="63" href="#63">63</a>  	    ClusterController controller =
-<a class="jxr_linenumber" name="64" href="#64">64</a>  	        <strong class="jxr_keyword">new</strong> ClusterController(clusterName, <span class="jxr_string">"controller_0"</span>, ZK_ADDR);
-<a class="jxr_linenumber" name="65" href="#65">65</a>  	    controller.syncStart();
-<a class="jxr_linenumber" name="66" href="#66">66</a>  
-<a class="jxr_linenumber" name="67" href="#67">67</a>  	    <em class="jxr_comment">// start participants</em>
-<a class="jxr_linenumber" name="68" href="#68">68</a>  	    MockParticipant[] participants = <strong class="jxr_keyword">new</strong> MockParticipant[n];
-<a class="jxr_linenumber" name="69" href="#69">69</a>  	    <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; n; i++)
-<a class="jxr_linenumber" name="70" href="#70">70</a>  	    {
-<a class="jxr_linenumber" name="71" href="#71">71</a>  	      String instanceName = <span class="jxr_string">"localhost_"</span> + (12918 + i);
-<a class="jxr_linenumber" name="72" href="#72">72</a>  
-<a class="jxr_linenumber" name="73" href="#73">73</a>  	      participants[i] = <strong class="jxr_keyword">new</strong> MockParticipant(clusterName, instanceName, ZK_ADDR, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="74" href="#74">74</a>  	      participants[i].syncStart();
-<a class="jxr_linenumber" name="75" href="#75">75</a>  	    }
-<a class="jxr_linenumber" name="76" href="#76">76</a>  
-<a class="jxr_linenumber" name="77" href="#77">77</a>  	    <strong class="jxr_keyword">boolean</strong> result =
-<a class="jxr_linenumber" name="78" href="#78">78</a>  	        ClusterStateVerifier.verifyByZkCallback(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
-<a class="jxr_linenumber" name="79" href="#79">79</a>  	                                                                                 clusterName));
-<a class="jxr_linenumber" name="80" href="#80">80</a>  	    Assert.assertTrue(result);
-<a class="jxr_linenumber" name="81" href="#81">81</a>  	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager controllerManager = controller.getManager();
-<a class="jxr_linenumber" name="82" href="#82">82</a>  	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager participantManagerToExpire = (ZkHelixTestManager)participants[1].getManager();
-<a class="jxr_linenumber" name="83" href="#83">83</a>  
-<a class="jxr_linenumber" name="84" href="#84">84</a>  	    <em class="jxr_comment">// check controller zk-watchers</em>
-<a class="jxr_linenumber" name="85" href="#85">85</a>  	    result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="86" href="#86">86</a>          
-<a class="jxr_linenumber" name="87" href="#87">87</a>          @Override
-<a class="jxr_linenumber" name="88" href="#88">88</a>          <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="89" href="#89">89</a>            Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
-<a class="jxr_linenumber" name="90" href="#90">90</a>            Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + controllerManager.getSessionId());
-<a class="jxr_linenumber" name="91" href="#91">91</a>            <em class="jxr_comment">// System.out.println("controller watch paths: " + watchPaths);</em>
-<a class="jxr_linenumber" name="92" href="#92">92</a>            
-<a class="jxr_linenumber" name="93" href="#93">93</a>            <em class="jxr_comment">// controller should have 5 + 2n + m + (m+2)n zk-watchers</em>
-<a class="jxr_linenumber" name="94" href="#94">94</a>            <em class="jxr_comment">// where n is number of nodes and m is number of resources</em>
-<a class="jxr_linenumber" name="95" href="#95">95</a>            <strong class="jxr_keyword">return</strong> watchPaths.size() == (6 + 5 * n);
-<a class="jxr_linenumber" name="96" href="#96">96</a>          }
-<a class="jxr_linenumber" name="97" href="#97">97</a>        }, 500);
-<a class="jxr_linenumber" name="98" href="#98">98</a>  	    Assert.assertTrue(result, <span class="jxr_string">"Controller should have 6 + 5*n zk-watchers."</span>);
-<a class="jxr_linenumber" name="99" href="#99">99</a>  	    
-<a class="jxr_linenumber" name="100" href="#100">100</a> 	    <em class="jxr_comment">// check participant zk-watchers</em>
-<a class="jxr_linenumber" name="101" href="#101">101</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="102" href="#102">102</a>         
-<a class="jxr_linenumber" name="103" href="#103">103</a>         @Override
-<a class="jxr_linenumber" name="104" href="#104">104</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="105" href="#105">105</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
-<a class="jxr_linenumber" name="106" href="#106">106</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + participantManagerToExpire.getSessionId());
-<a class="jxr_linenumber" name="107" href="#107">107</a>           <em class="jxr_comment">// System.out.println("participant watch paths: " + watchPaths);</em>
-<a class="jxr_linenumber" name="108" href="#108">108</a>           
-<a class="jxr_linenumber" name="109" href="#109">109</a>           <em class="jxr_comment">// participant should have 2 zk-watchers: 1 for MESSAGE and 1 for CONTROLLER</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == 2;
-<a class="jxr_linenumber" name="111" href="#111">111</a>         }
-<a class="jxr_linenumber" name="112" href="#112">112</a>       }, 500);
-<a class="jxr_linenumber" name="113" href="#113">113</a>       Assert.assertTrue(result, <span class="jxr_string">"Participant should have 2 zk-watchers."</span>);
-<a class="jxr_linenumber" name="114" href="#114">114</a> 
-<a class="jxr_linenumber" name="115" href="#115">115</a> 	    
-<a class="jxr_linenumber" name="116" href="#116">116</a> 	    <em class="jxr_comment">// check HelixManager#_handlers</em>
-<a class="jxr_linenumber" name="117" href="#117">117</a> 	    <em class="jxr_comment">// printHandlers(controllerManager);</em>
-<a class="jxr_linenumber" name="118" href="#118">118</a> 	    <em class="jxr_comment">// printHandlers(participantManagerToExpire);</em>
-<a class="jxr_linenumber" name="119" href="#119">119</a> 	    <strong class="jxr_keyword">int</strong> controllerHandlerNb = controllerManager.getHandlers().size();
-<a class="jxr_linenumber" name="120" href="#120">120</a> 	    <strong class="jxr_keyword">int</strong> particHandlerNb = participantManagerToExpire.getHandlers().size();
-<a class="jxr_linenumber" name="121" href="#121">121</a> 	    Assert.assertEquals(controllerHandlerNb, 9, <span class="jxr_string">"HelixController should have 9 (5+2n) callback handlers for 2 (n) participant"</span>);
-<a class="jxr_linenumber" name="122" href="#122">122</a> 	    Assert.assertEquals(particHandlerNb, 2, <span class="jxr_string">"HelixParticipant should have 2 (msg+cur-state) callback handlers"</span>);
-<a class="jxr_linenumber" name="123" href="#123">123</a> 	    
-<a class="jxr_linenumber" name="124" href="#124">124</a> 	    <em class="jxr_comment">// expire the session of participant</em>
-<a class="jxr_linenumber" name="125" href="#125">125</a> 	    System.out.println(<span class="jxr_string">"Expiring participant session..."</span>);
-<a class="jxr_linenumber" name="126" href="#126">126</a> 	    String oldSessionId = participantManagerToExpire.getSessionId();
-<a class="jxr_linenumber" name="127" href="#127">127</a> 	    
-<a class="jxr_linenumber" name="128" href="#128">128</a> 	    ZkTestHelper.expireSession(participantManagerToExpire.getZkClient());
-<a class="jxr_linenumber" name="129" href="#129">129</a> 	    String newSessionId = participantManagerToExpire.getSessionId();
-<a class="jxr_linenumber" name="130" href="#130">130</a> 	    System.out.println(<span class="jxr_string">"Expried participant session. oldSessionId: "</span> + oldSessionId + <span class="jxr_string">", newSessionId: "</span> + newSessionId);
-<a class="jxr_linenumber" name="131" href="#131">131</a> 
-<a class="jxr_linenumber" name="132" href="#132">132</a> 	    result =
-<a class="jxr_linenumber" name="133" href="#133">133</a> 	        ClusterStateVerifier.verifyByPolling(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
-<a class="jxr_linenumber" name="134" href="#134">134</a> 	                                                                                                   clusterName));
-<a class="jxr_linenumber" name="135" href="#135">135</a> 	    Assert.assertTrue(result);
-<a class="jxr_linenumber" name="136" href="#136">136</a> 	    
-<a class="jxr_linenumber" name="137" href="#137">137</a> 	    <em class="jxr_comment">// check controller zk-watchers</em>
-<a class="jxr_linenumber" name="138" href="#138">138</a>      result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="139" href="#139">139</a>         
-<a class="jxr_linenumber" name="140" href="#140">140</a>         @Override
-<a class="jxr_linenumber" name="141" href="#141">141</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="142" href="#142">142</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
-<a class="jxr_linenumber" name="143" href="#143">143</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + controllerManager.getSessionId());
-<a class="jxr_linenumber" name="144" href="#144">144</a>           <em class="jxr_comment">// System.out.println("controller watch paths after session expiry: " + watchPaths);</em>
-<a class="jxr_linenumber" name="145" href="#145">145</a>           
-<a class="jxr_linenumber" name="146" href="#146">146</a>           <em class="jxr_comment">// controller should have 5 + 2n + m + (m+2)n zk-watchers</em>
-<a class="jxr_linenumber" name="147" href="#147">147</a>           <em class="jxr_comment">// where n is number of nodes and m is number of resources</em>
-<a class="jxr_linenumber" name="148" href="#148">148</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == (6 + 5 * n);
-<a class="jxr_linenumber" name="149" href="#149">149</a>         }
-<a class="jxr_linenumber" name="150" href="#150">150</a>       }, 500);
-<a class="jxr_linenumber" name="151" href="#151">151</a>       Assert.assertTrue(result, <span class="jxr_string">"Controller should have 6 + 5*n zk-watchers after session expiry."</span>);
-<a class="jxr_linenumber" name="152" href="#152">152</a> 
-<a class="jxr_linenumber" name="153" href="#153">153</a>       <em class="jxr_comment">// check participant zk-watchers</em>
-<a class="jxr_linenumber" name="154" href="#154">154</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="155" href="#155">155</a>         
-<a class="jxr_linenumber" name="156" href="#156">156</a>         @Override
-<a class="jxr_linenumber" name="157" href="#157">157</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="158" href="#158">158</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
-<a class="jxr_linenumber" name="159" href="#159">159</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + participantManagerToExpire.getSessionId());
-<a class="jxr_linenumber" name="160" href="#160">160</a>           <em class="jxr_comment">// System.out.println("participant watch paths after session expiry: " + watchPaths);</em>
-<a class="jxr_linenumber" name="161" href="#161">161</a>           
-<a class="jxr_linenumber" name="162" href="#162">162</a>           <em class="jxr_comment">// participant should have 2 zk-watchers: 1 for MESSAGE and 1 for CONTROLLER</em>
-<a class="jxr_linenumber" name="163" href="#163">163</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == 2;
-<a class="jxr_linenumber" name="164" href="#164">164</a>         }
-<a class="jxr_linenumber" name="165" href="#165">165</a>       }, 500);
-<a class="jxr_linenumber" name="166" href="#166">166</a>       Assert.assertTrue(result, <span class="jxr_string">"Participant should have 2 zk-watchers after session expiry."</span>);
-<a class="jxr_linenumber" name="167" href="#167">167</a> 
+<a class="jxr_linenumber" name="63" href="#63">63</a>  	    
+<a class="jxr_linenumber" name="64" href="#64">64</a>  	    ClusterController controller =
+<a class="jxr_linenumber" name="65" href="#65">65</a>  	        <strong class="jxr_keyword">new</strong> ClusterController(clusterName, <span class="jxr_string">"controller_0"</span>, ZK_ADDR);
+<a class="jxr_linenumber" name="66" href="#66">66</a>  	    controller.syncStart();
+<a class="jxr_linenumber" name="67" href="#67">67</a>  
+<a class="jxr_linenumber" name="68" href="#68">68</a>  	    <em class="jxr_comment">// start participants</em>
+<a class="jxr_linenumber" name="69" href="#69">69</a>  	    MockParticipant[] participants = <strong class="jxr_keyword">new</strong> MockParticipant[n];
+<a class="jxr_linenumber" name="70" href="#70">70</a>  	    <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; n; i++)
+<a class="jxr_linenumber" name="71" href="#71">71</a>  	    {
+<a class="jxr_linenumber" name="72" href="#72">72</a>  	      String instanceName = <span class="jxr_string">"localhost_"</span> + (12918 + i);
+<a class="jxr_linenumber" name="73" href="#73">73</a>  
+<a class="jxr_linenumber" name="74" href="#74">74</a>  	      participants[i] = <strong class="jxr_keyword">new</strong> MockParticipant(clusterName, instanceName, ZK_ADDR, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="75" href="#75">75</a>  	      participants[i].syncStart();
+<a class="jxr_linenumber" name="76" href="#76">76</a>  	    }
+<a class="jxr_linenumber" name="77" href="#77">77</a>  
+<a class="jxr_linenumber" name="78" href="#78">78</a>  	    <strong class="jxr_keyword">boolean</strong> result =
+<a class="jxr_linenumber" name="79" href="#79">79</a>  	        ClusterStateVerifier.verifyByZkCallback(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
+<a class="jxr_linenumber" name="80" href="#80">80</a>  	                                                                                 clusterName));
+<a class="jxr_linenumber" name="81" href="#81">81</a>  	    Assert.assertTrue(result);
+<a class="jxr_linenumber" name="82" href="#82">82</a>  	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager controllerManager = controller.getManager();
+<a class="jxr_linenumber" name="83" href="#83">83</a>  	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager participantManagerToExpire = (ZkHelixTestManager)participants[1].getManager();
+<a class="jxr_linenumber" name="84" href="#84">84</a>  
+<a class="jxr_linenumber" name="85" href="#85">85</a>  	    <em class="jxr_comment">// check controller zk-watchers</em>
+<a class="jxr_linenumber" name="86" href="#86">86</a>  	    result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="87" href="#87">87</a>          
+<a class="jxr_linenumber" name="88" href="#88">88</a>          @Override
+<a class="jxr_linenumber" name="89" href="#89">89</a>          <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="90" href="#90">90</a>            Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
+<a class="jxr_linenumber" name="91" href="#91">91</a>            Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + controllerManager.getSessionId());
+<a class="jxr_linenumber" name="92" href="#92">92</a>            <em class="jxr_comment">// System.out.println("controller watch paths: " + watchPaths);</em>
+<a class="jxr_linenumber" name="93" href="#93">93</a>            
+<a class="jxr_linenumber" name="94" href="#94">94</a>            <em class="jxr_comment">// controller should have 5 + 2n + m + (m+2)n zk-watchers</em>
+<a class="jxr_linenumber" name="95" href="#95">95</a>            <em class="jxr_comment">// where n is number of nodes and m is number of resources</em>
+<a class="jxr_linenumber" name="96" href="#96">96</a>            <strong class="jxr_keyword">return</strong> watchPaths.size() == (6 + 5 * n);
+<a class="jxr_linenumber" name="97" href="#97">97</a>          }
+<a class="jxr_linenumber" name="98" href="#98">98</a>        }, 500);
+<a class="jxr_linenumber" name="99" href="#99">99</a>  	    Assert.assertTrue(result, <span class="jxr_string">"Controller should have 6 + 5*n zk-watchers."</span>);
+<a class="jxr_linenumber" name="100" href="#100">100</a> 	    
+<a class="jxr_linenumber" name="101" href="#101">101</a> 	    <em class="jxr_comment">// check participant zk-watchers</em>
+<a class="jxr_linenumber" name="102" href="#102">102</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="103" href="#103">103</a>         
+<a class="jxr_linenumber" name="104" href="#104">104</a>         @Override
+<a class="jxr_linenumber" name="105" href="#105">105</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="106" href="#106">106</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
+<a class="jxr_linenumber" name="107" href="#107">107</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + participantManagerToExpire.getSessionId());
+<a class="jxr_linenumber" name="108" href="#108">108</a>           <em class="jxr_comment">// System.out.println("participant watch paths: " + watchPaths);</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a>           
+<a class="jxr_linenumber" name="110" href="#110">110</a>           <em class="jxr_comment">// participant should have 2 zk-watchers: 1 for MESSAGE and 1 for CONTROLLER</em>
+<a class="jxr_linenumber" name="111" href="#111">111</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == 2;
+<a class="jxr_linenumber" name="112" href="#112">112</a>         }
+<a class="jxr_linenumber" name="113" href="#113">113</a>       }, 500);
+<a class="jxr_linenumber" name="114" href="#114">114</a>       Assert.assertTrue(result, <span class="jxr_string">"Participant should have 2 zk-watchers."</span>);
+<a class="jxr_linenumber" name="115" href="#115">115</a> 
+<a class="jxr_linenumber" name="116" href="#116">116</a> 	    
+<a class="jxr_linenumber" name="117" href="#117">117</a> 	    <em class="jxr_comment">// check HelixManager#_handlers</em>
+<a class="jxr_linenumber" name="118" href="#118">118</a> 	    <em class="jxr_comment">// printHandlers(controllerManager);</em>
+<a class="jxr_linenumber" name="119" href="#119">119</a> 	    <em class="jxr_comment">// printHandlers(participantManagerToExpire);</em>
+<a class="jxr_linenumber" name="120" href="#120">120</a> 	    <strong class="jxr_keyword">int</strong> controllerHandlerNb = controllerManager.getHandlers().size();
+<a class="jxr_linenumber" name="121" href="#121">121</a> 	    <strong class="jxr_keyword">int</strong> particHandlerNb = participantManagerToExpire.getHandlers().size();
+<a class="jxr_linenumber" name="122" href="#122">122</a> 	    Assert.assertEquals(controllerHandlerNb, 9, <span class="jxr_string">"HelixController should have 9 (5+2n) callback handlers for 2 (n) participant"</span>);
+<a class="jxr_linenumber" name="123" href="#123">123</a> 	    Assert.assertEquals(particHandlerNb, 2, <span class="jxr_string">"HelixParticipant should have 2 (msg+cur-state) callback handlers"</span>);
+<a class="jxr_linenumber" name="124" href="#124">124</a> 	    
+<a class="jxr_linenumber" name="125" href="#125">125</a> 	    <em class="jxr_comment">// expire the session of participant</em>
+<a class="jxr_linenumber" name="126" href="#126">126</a> 	    System.out.println(<span class="jxr_string">"Expiring participant session..."</span>);
+<a class="jxr_linenumber" name="127" href="#127">127</a> 	    String oldSessionId = participantManagerToExpire.getSessionId();
+<a class="jxr_linenumber" name="128" href="#128">128</a> 	    
+<a class="jxr_linenumber" name="129" href="#129">129</a> 	    ZkTestHelper.expireSession(participantManagerToExpire.getZkClient());
+<a class="jxr_linenumber" name="130" href="#130">130</a> 	    String newSessionId = participantManagerToExpire.getSessionId();
+<a class="jxr_linenumber" name="131" href="#131">131</a> 	    System.out.println(<span class="jxr_string">"Expried participant session. oldSessionId: "</span> + oldSessionId + <span class="jxr_string">", newSessionId: "</span> + newSessionId);
+<a class="jxr_linenumber" name="132" href="#132">132</a> 
+<a class="jxr_linenumber" name="133" href="#133">133</a> 	    result =
+<a class="jxr_linenumber" name="134" href="#134">134</a> 	        ClusterStateVerifier.verifyByPolling(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
+<a class="jxr_linenumber" name="135" href="#135">135</a> 	                                                                                                   clusterName));
+<a class="jxr_linenumber" name="136" href="#136">136</a> 	    Assert.assertTrue(result);
+<a class="jxr_linenumber" name="137" href="#137">137</a> 	    
+<a class="jxr_linenumber" name="138" href="#138">138</a> 	    <em class="jxr_comment">// check controller zk-watchers</em>
+<a class="jxr_linenumber" name="139" href="#139">139</a>      result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="140" href="#140">140</a>         
+<a class="jxr_linenumber" name="141" href="#141">141</a>         @Override
+<a class="jxr_linenumber" name="142" href="#142">142</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="143" href="#143">143</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
+<a class="jxr_linenumber" name="144" href="#144">144</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + controllerManager.getSessionId());
+<a class="jxr_linenumber" name="145" href="#145">145</a>           <em class="jxr_comment">// System.out.println("controller watch paths after session expiry: " + watchPaths);</em>
+<a class="jxr_linenumber" name="146" href="#146">146</a>           
+<a class="jxr_linenumber" name="147" href="#147">147</a>           <em class="jxr_comment">// controller should have 5 + 2n + m + (m+2)n zk-watchers</em>
+<a class="jxr_linenumber" name="148" href="#148">148</a>           <em class="jxr_comment">// where n is number of nodes and m is number of resources</em>
+<a class="jxr_linenumber" name="149" href="#149">149</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == (6 + 5 * n);
+<a class="jxr_linenumber" name="150" href="#150">150</a>         }
+<a class="jxr_linenumber" name="151" href="#151">151</a>       }, 500);
+<a class="jxr_linenumber" name="152" href="#152">152</a>       Assert.assertTrue(result, <span class="jxr_string">"Controller should have 6 + 5*n zk-watchers after session expiry."</span>);
+<a class="jxr_linenumber" name="153" href="#153">153</a> 
+<a class="jxr_linenumber" name="154" href="#154">154</a>       <em class="jxr_comment">// check participant zk-watchers</em>
+<a class="jxr_linenumber" name="155" href="#155">155</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="156" href="#156">156</a>         
+<a class="jxr_linenumber" name="157" href="#157">157</a>         @Override
+<a class="jxr_linenumber" name="158" href="#158">158</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="159" href="#159">159</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
+<a class="jxr_linenumber" name="160" href="#160">160</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + participantManagerToExpire.getSessionId());
+<a class="jxr_linenumber" name="161" href="#161">161</a>           <em class="jxr_comment">// System.out.println("participant watch paths after session expiry: " + watchPaths);</em>
+<a class="jxr_linenumber" name="162" href="#162">162</a>           
+<a class="jxr_linenumber" name="163" href="#163">163</a>           <em class="jxr_comment">// participant should have 2 zk-watchers: 1 for MESSAGE and 1 for CONTROLLER</em>
+<a class="jxr_linenumber" name="164" href="#164">164</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == 2;
+<a class="jxr_linenumber" name="165" href="#165">165</a>         }
+<a class="jxr_linenumber" name="166" href="#166">166</a>       }, 500);
+<a class="jxr_linenumber" name="167" href="#167">167</a>       Assert.assertTrue(result, <span class="jxr_string">"Participant should have 2 zk-watchers after session expiry."</span>);
 <a class="jxr_linenumber" name="168" href="#168">168</a> 
-<a class="jxr_linenumber" name="169" href="#169">169</a> 	    <em class="jxr_comment">// check handlers</em>
-<a class="jxr_linenumber" name="170" href="#170">170</a> 	    <em class="jxr_comment">// printHandlers(controllerManager);</em>
-<a class="jxr_linenumber" name="171" href="#171">171</a> 	    <em class="jxr_comment">// printHandlers(participantManagerToExpire);</em>
-<a class="jxr_linenumber" name="172" href="#172">172</a> 	    <strong class="jxr_keyword">int</strong> handlerNb = controllerManager.getHandlers().size();
-<a class="jxr_linenumber" name="173" href="#173">173</a> 	    Assert.assertEquals(handlerNb, controllerHandlerNb, <span class="jxr_string">"controller callback handlers should not increase after participant session expiry"</span>);
-<a class="jxr_linenumber" name="174" href="#174">174</a> 	    handlerNb = participantManagerToExpire.getHandlers().size();
-<a class="jxr_linenumber" name="175" href="#175">175</a> 	    Assert.assertEquals(handlerNb, particHandlerNb, <span class="jxr_string">"participant callback handlers should not increase after participant session expiry"</span>);
-<a class="jxr_linenumber" name="176" href="#176">176</a> 
-<a class="jxr_linenumber" name="177" href="#177">177</a> 	    System.out.println(<span class="jxr_string">"END "</span> + clusterName + <span class="jxr_string">" at "</span>
-<a class="jxr_linenumber" name="178" href="#178">178</a> 	            + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
-<a class="jxr_linenumber" name="179" href="#179">179</a> 	}
-<a class="jxr_linenumber" name="180" href="#180">180</a> 	
-<a class="jxr_linenumber" name="181" href="#181">181</a> 	@Test
-<a class="jxr_linenumber" name="182" href="#182">182</a> 	<strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testCbHandlerLeakOnControllerSessionExpiry() <strong class="jxr_keyword">throws</strong> Exception
-<a class="jxr_linenumber" name="183" href="#183">183</a> 	{
-<a class="jxr_linenumber" name="184" href="#184">184</a> 	    <em class="jxr_comment">// Logger.getRootLogger().setLevel(Level.INFO);</em>
-<a class="jxr_linenumber" name="185" href="#185">185</a> 	    String className = TestHelper.getTestClassName();
-<a class="jxr_linenumber" name="186" href="#186">186</a> 	    String methodName = TestHelper.getTestMethodName();
-<a class="jxr_linenumber" name="187" href="#187">187</a> 	    String clusterName = className + <span class="jxr_string">"_"</span> + methodName;
-<a class="jxr_linenumber" name="188" href="#188">188</a> 	    <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> n = 2;
-<a class="jxr_linenumber" name="189" href="#189">189</a> 
-<a class="jxr_linenumber" name="190" href="#190">190</a> 	    System.out.println(<span class="jxr_string">"START "</span> + clusterName + <span class="jxr_string">" at "</span>
-<a class="jxr_linenumber" name="191" href="#191">191</a> 	        + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
-<a class="jxr_linenumber" name="192" href="#192">192</a> 
-<a class="jxr_linenumber" name="193" href="#193">193</a> 	    TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, <em class="jxr_comment">// participant port</em>
-<a class="jxr_linenumber" name="194" href="#194">194</a> 	                            <span class="jxr_string">"localhost"</span>, <em class="jxr_comment">// participant name prefix</em>
-<a class="jxr_linenumber" name="195" href="#195">195</a> 	                            <span class="jxr_string">"TestDB"</span>, <em class="jxr_comment">// resource name prefix</em>
-<a class="jxr_linenumber" name="196" href="#196">196</a> 	                            1, <em class="jxr_comment">// resources</em>
-<a class="jxr_linenumber" name="197" href="#197">197</a> 	                            32, <em class="jxr_comment">// partitions per resource</em>
-<a class="jxr_linenumber" name="198" href="#198">198</a> 	                            n, <em class="jxr_comment">// number of nodes</em>
-<a class="jxr_linenumber" name="199" href="#199">199</a> 	                            2, <em class="jxr_comment">// replicas</em>
-<a class="jxr_linenumber" name="200" href="#200">200</a> 	                            <span class="jxr_string">"MasterSlave"</span>,
-<a class="jxr_linenumber" name="201" href="#201">201</a> 	                            <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// do rebalance</em>
-<a class="jxr_linenumber" name="202" href="#202">202</a> 	    
+<a class="jxr_linenumber" name="169" href="#169">169</a> 
+<a class="jxr_linenumber" name="170" href="#170">170</a> 	    <em class="jxr_comment">// check handlers</em>
+<a class="jxr_linenumber" name="171" href="#171">171</a> 	    <em class="jxr_comment">// printHandlers(controllerManager);</em>
+<a class="jxr_linenumber" name="172" href="#172">172</a> 	    <em class="jxr_comment">// printHandlers(participantManagerToExpire);</em>
+<a class="jxr_linenumber" name="173" href="#173">173</a> 	    <strong class="jxr_keyword">int</strong> handlerNb = controllerManager.getHandlers().size();
+<a class="jxr_linenumber" name="174" href="#174">174</a> 	    Assert.assertEquals(handlerNb, controllerHandlerNb, <span class="jxr_string">"controller callback handlers should not increase after participant session expiry"</span>);
+<a class="jxr_linenumber" name="175" href="#175">175</a> 	    handlerNb = participantManagerToExpire.getHandlers().size();
+<a class="jxr_linenumber" name="176" href="#176">176</a> 	    Assert.assertEquals(handlerNb, particHandlerNb, <span class="jxr_string">"participant callback handlers should not increase after participant session expiry"</span>);
+<a class="jxr_linenumber" name="177" href="#177">177</a> 
+<a class="jxr_linenumber" name="178" href="#178">178</a> 	    System.out.println(<span class="jxr_string">"END "</span> + clusterName + <span class="jxr_string">" at "</span>
+<a class="jxr_linenumber" name="179" href="#179">179</a> 	            + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
+<a class="jxr_linenumber" name="180" href="#180">180</a> 	}
+<a class="jxr_linenumber" name="181" href="#181">181</a> 	
+<a class="jxr_linenumber" name="182" href="#182">182</a> 	@Test
+<a class="jxr_linenumber" name="183" href="#183">183</a> 	<strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testCbHandlerLeakOnControllerSessionExpiry() <strong class="jxr_keyword">throws</strong> Exception
+<a class="jxr_linenumber" name="184" href="#184">184</a> 	{
+<a class="jxr_linenumber" name="185" href="#185">185</a> 	    <em class="jxr_comment">// Logger.getRootLogger().setLevel(Level.INFO);</em>
+<a class="jxr_linenumber" name="186" href="#186">186</a> 	    String className = TestHelper.getTestClassName();
+<a class="jxr_linenumber" name="187" href="#187">187</a> 	    String methodName = TestHelper.getTestMethodName();
+<a class="jxr_linenumber" name="188" href="#188">188</a> 	    String clusterName = className + <span class="jxr_string">"_"</span> + methodName;
+<a class="jxr_linenumber" name="189" href="#189">189</a> 	    <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> n = 2;
+<a class="jxr_linenumber" name="190" href="#190">190</a> 
+<a class="jxr_linenumber" name="191" href="#191">191</a> 	    System.out.println(<span class="jxr_string">"START "</span> + clusterName + <span class="jxr_string">" at "</span>
+<a class="jxr_linenumber" name="192" href="#192">192</a> 	        + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
+<a class="jxr_linenumber" name="193" href="#193">193</a> 
+<a class="jxr_linenumber" name="194" href="#194">194</a> 	    TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, <em class="jxr_comment">// participant port</em>
+<a class="jxr_linenumber" name="195" href="#195">195</a> 	                            <span class="jxr_string">"localhost"</span>, <em class="jxr_comment">// participant name prefix</em>
+<a class="jxr_linenumber" name="196" href="#196">196</a> 	                            <span class="jxr_string">"TestDB"</span>, <em class="jxr_comment">// resource name prefix</em>
+<a class="jxr_linenumber" name="197" href="#197">197</a> 	                            1, <em class="jxr_comment">// resources</em>
+<a class="jxr_linenumber" name="198" href="#198">198</a> 	                            32, <em class="jxr_comment">// partitions per resource</em>
+<a class="jxr_linenumber" name="199" href="#199">199</a> 	                            n, <em class="jxr_comment">// number of nodes</em>
+<a class="jxr_linenumber" name="200" href="#200">200</a> 	                            2, <em class="jxr_comment">// replicas</em>
+<a class="jxr_linenumber" name="201" href="#201">201</a> 	                            <span class="jxr_string">"MasterSlave"</span>,
+<a class="jxr_linenumber" name="202" href="#202">202</a> 	                            <strong class="jxr_keyword">true</strong>); <em class="jxr_comment">// do rebalance</em>
 <a class="jxr_linenumber" name="203" href="#203">203</a> 	    
-<a class="jxr_linenumber" name="204" href="#204">204</a> 	    ClusterController controller =
-<a class="jxr_linenumber" name="205" href="#205">205</a> 	        <strong class="jxr_keyword">new</strong> ClusterController(clusterName, <span class="jxr_string">"controller_0"</span>, ZK_ADDR);
-<a class="jxr_linenumber" name="206" href="#206">206</a> 	    controller.syncStart();
-<a class="jxr_linenumber" name="207" href="#207">207</a> 
-<a class="jxr_linenumber" name="208" href="#208">208</a> 	    <em class="jxr_comment">// start participants</em>
-<a class="jxr_linenumber" name="209" href="#209">209</a> 	    MockParticipant[] participants = <strong class="jxr_keyword">new</strong> MockParticipant[n];
-<a class="jxr_linenumber" name="210" href="#210">210</a> 	    <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; n; i++)
-<a class="jxr_linenumber" name="211" href="#211">211</a> 	    {
-<a class="jxr_linenumber" name="212" href="#212">212</a> 	      String instanceName = <span class="jxr_string">"localhost_"</span> + (12918 + i);
-<a class="jxr_linenumber" name="213" href="#213">213</a> 
-<a class="jxr_linenumber" name="214" href="#214">214</a> 	      participants[i] = <strong class="jxr_keyword">new</strong> MockParticipant(clusterName, instanceName, ZK_ADDR, <strong class="jxr_keyword">null</strong>);
-<a class="jxr_linenumber" name="215" href="#215">215</a> 	      participants[i].syncStart();
-<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> 	    <strong class="jxr_keyword">boolean</strong> result =
-<a class="jxr_linenumber" name="219" href="#219">219</a> 	        ClusterStateVerifier.verifyByZkCallback(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
-<a class="jxr_linenumber" name="220" href="#220">220</a> 	                                                                                 clusterName));
-<a class="jxr_linenumber" name="221" href="#221">221</a> 	    Assert.assertTrue(result);
-<a class="jxr_linenumber" name="222" href="#222">222</a> 	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager controllerManager = controller.getManager();
-<a class="jxr_linenumber" name="223" href="#223">223</a> 	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager participantManager = participants[0].getManager();
-<a class="jxr_linenumber" name="224" href="#224">224</a> 
-<a class="jxr_linenumber" name="225" href="#225">225</a> 	    <em class="jxr_comment">// wait until we get all the listeners registered</em>
-<a class="jxr_linenumber" name="226" href="#226">226</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="227" href="#227">227</a>         
-<a class="jxr_linenumber" name="228" href="#228">228</a>         @Override
-<a class="jxr_linenumber" name="229" href="#229">229</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="230" href="#230">230</a>           <strong class="jxr_keyword">int</strong> controllerHandlerNb = controllerManager.getHandlers().size();
-<a class="jxr_linenumber" name="231" href="#231">231</a>           <strong class="jxr_keyword">int</strong> particHandlerNb = participantManager.getHandlers().size();
-<a class="jxr_linenumber" name="232" href="#232">232</a>           <strong class="jxr_keyword">if</strong> (controllerHandlerNb == 9 &amp;&amp; particHandlerNb == 2)
-<a class="jxr_linenumber" name="233" href="#233">233</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="234" href="#234">234</a>           <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="235" href="#235">235</a>             <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="236" href="#236">236</a>         }
-<a class="jxr_linenumber" name="237" href="#237">237</a>       }, 1000);
-<a class="jxr_linenumber" name="238" href="#238">238</a> 	    
-<a class="jxr_linenumber" name="239" href="#239">239</a> 	    <strong class="jxr_keyword">int</strong> controllerHandlerNb = controllerManager.getHandlers().size();
-<a class="jxr_linenumber" name="240" href="#240">240</a> 	    <strong class="jxr_keyword">int</strong> particHandlerNb = participantManager.getHandlers().size();
-<a class="jxr_linenumber" name="241" href="#241">241</a>     	Assert.assertEquals(controllerHandlerNb, 9, <span class="jxr_string">"HelixController should have 9 (5+2n) callback handlers for 2 participant, but was "</span> 
-<a class="jxr_linenumber" name="242" href="#242">242</a>     	    		+ controllerHandlerNb + <span class="jxr_string">", "</span>
-<a class="jxr_linenumber" name="243" href="#243">243</a>     	    		+ printHandlers(controllerManager));
-<a class="jxr_linenumber" name="244" href="#244">244</a>     	Assert.assertEquals(particHandlerNb, 2, <span class="jxr_string">"HelixParticipant should have 2 (msg+cur-state) callback handlers, but was "</span> 
-<a class="jxr_linenumber" name="245" href="#245">245</a>     	    		+ particHandlerNb + <span class="jxr_string">", "</span>
-<a class="jxr_linenumber" name="246" href="#246">246</a>     	    		+ printHandlers(participantManager));
-<a class="jxr_linenumber" name="247" href="#247">247</a> 
-<a class="jxr_linenumber" name="248" href="#248">248</a> 	    <em class="jxr_comment">// expire controller</em>
-<a class="jxr_linenumber" name="249" href="#249">249</a> 	    System.out.println(<span class="jxr_string">"Expiring controller session..."</span>);
-<a class="jxr_linenumber" name="250" href="#250">250</a> 	    String oldSessionId = controllerManager.getSessionId();
-<a class="jxr_linenumber" name="251" href="#251">251</a> 	    
-<a class="jxr_linenumber" name="252" href="#252">252</a> 	    ZkTestHelper.expireSession(controllerManager.getZkClient());
-<a class="jxr_linenumber" name="253" href="#253">253</a> 	    String newSessionId = controllerManager.getSessionId();
-<a class="jxr_linenumber" name="254" href="#254">254</a> 	    System.out.println(<span class="jxr_string">"Expired controller session. oldSessionId: "</span> + oldSessionId + <span class="jxr_string">", newSessionId: "</span> + newSessionId);
-<a class="jxr_linenumber" name="255" href="#255">255</a> 	    
-<a class="jxr_linenumber" name="256" href="#256">256</a> 	    result =
-<a class="jxr_linenumber" name="257" href="#257">257</a> 	        ClusterStateVerifier.verifyByPolling(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
-<a class="jxr_linenumber" name="258" href="#258">258</a> 	                                                                                                   clusterName));
-<a class="jxr_linenumber" name="259" href="#259">259</a> 	    Assert.assertTrue(result);
-<a class="jxr_linenumber" name="260" href="#260">260</a> 	    
-<a class="jxr_linenumber" name="261" href="#261">261</a> 	    <em class="jxr_comment">// check controller zk-watchers</em>
-<a class="jxr_linenumber" name="262" href="#262">262</a>      result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="263" href="#263">263</a>         
-<a class="jxr_linenumber" name="264" href="#264">264</a>         @Override
-<a class="jxr_linenumber" name="265" href="#265">265</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="266" href="#266">266</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
-<a class="jxr_linenumber" name="267" href="#267">267</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + controllerManager.getSessionId());
-<a class="jxr_linenumber" name="268" href="#268">268</a>           <em class="jxr_comment">// System.out.println("controller watch paths after session expiry: " + watchPaths);</em>
-<a class="jxr_linenumber" name="269" href="#269">269</a>           
-<a class="jxr_linenumber" name="270" href="#270">270</a>           <em class="jxr_comment">// controller should have 5 + 2n + m + (m+2)n zk-watchers</em>
-<a class="jxr_linenumber" name="271" href="#271">271</a>           <em class="jxr_comment">// where n is number of nodes and m is number of resources</em>
-<a class="jxr_linenumber" name="272" href="#272">272</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == (6 + 5 * n);
-<a class="jxr_linenumber" name="273" href="#273">273</a>         }
-<a class="jxr_linenumber" name="274" href="#274">274</a>       }, 500);
-<a class="jxr_linenumber" name="275" href="#275">275</a>       Assert.assertTrue(result, <span class="jxr_string">"Controller should have 6 + 5*n zk-watchers after session expiry."</span>);
-<a class="jxr_linenumber" name="276" href="#276">276</a> 
-<a class="jxr_linenumber" name="277" href="#277">277</a>       <em class="jxr_comment">// check participant zk-watchers</em>
-<a class="jxr_linenumber" name="278" href="#278">278</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
-<a class="jxr_linenumber" name="279" href="#279">279</a>         
-<a class="jxr_linenumber" name="280" href="#280">280</a>         @Override
-<a class="jxr_linenumber" name="281" href="#281">281</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="282" href="#282">282</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
-<a class="jxr_linenumber" name="283" href="#283">283</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + participantManager.getSessionId());
-<a class="jxr_linenumber" name="284" href="#284">284</a>           <em class="jxr_comment">// System.out.println("participant watch paths after session expiry: " + watchPaths);</em>
-<a class="jxr_linenumber" name="285" href="#285">285</a>           
-<a class="jxr_linenumber" name="286" href="#286">286</a>           <em class="jxr_comment">// participant should have 2 zk-watchers: 1 for MESSAGE and 1 for CONTROLLER</em>
-<a class="jxr_linenumber" name="287" href="#287">287</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == 2;
-<a class="jxr_linenumber" name="288" href="#288">288</a>         }
-<a class="jxr_linenumber" name="289" href="#289">289</a>       }, 500);
-<a class="jxr_linenumber" name="290" href="#290">290</a>       Assert.assertTrue(result, <span class="jxr_string">"Participant should have 2 zk-watchers after session expiry."</span>);
-<a class="jxr_linenumber" name="291" href="#291">291</a> 	    
-<a class="jxr_linenumber" name="292" href="#292">292</a> 	    <em class="jxr_comment">// check HelixManager#_handlers</em>
-<a class="jxr_linenumber" name="293" href="#293">293</a> 	    <em class="jxr_comment">// printHandlers(controllerManager);</em>
-<a class="jxr_linenumber" name="294" href="#294">294</a> 	    <strong class="jxr_keyword">int</strong> handlerNb = controllerManager.getHandlers().size();
-<a class="jxr_linenumber" name="295" href="#295">295</a> 	    Assert.assertEquals(handlerNb, controllerHandlerNb, <span class="jxr_string">"controller callback handlers should not increase after participant session expiry, but was "</span>
-<a class="jxr_linenumber" name="296" href="#296">296</a> 	    		+ printHandlers(controllerManager));
-<a class="jxr_linenumber" name="297" href="#297">297</a> 	    handlerNb = participantManager.getHandlers().size();
-<a class="jxr_linenumber" name="298" href="#298">298</a> 	    Assert.assertEquals(handlerNb, particHandlerNb, <span class="jxr_string">"participant callback handlers should not increase after participant session expiry, but was "</span> 
-<a class="jxr_linenumber" name="299" href="#299">299</a> 	    		+ printHandlers(participantManager));
-<a class="jxr_linenumber" name="300" href="#300">300</a> 
+<a class="jxr_linenumber" name="204" href="#204">204</a> 	    
+<a class="jxr_linenumber" name="205" href="#205">205</a> 	    ClusterController controller =
+<a class="jxr_linenumber" name="206" href="#206">206</a> 	        <strong class="jxr_keyword">new</strong> ClusterController(clusterName, <span class="jxr_string">"controller_0"</span>, ZK_ADDR);
+<a class="jxr_linenumber" name="207" href="#207">207</a> 	    controller.syncStart();
+<a class="jxr_linenumber" name="208" href="#208">208</a> 
+<a class="jxr_linenumber" name="209" href="#209">209</a> 	    <em class="jxr_comment">// start participants</em>
+<a class="jxr_linenumber" name="210" href="#210">210</a> 	    MockParticipant[] participants = <strong class="jxr_keyword">new</strong> MockParticipant[n];
+<a class="jxr_linenumber" name="211" href="#211">211</a> 	    <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; n; i++)
+<a class="jxr_linenumber" name="212" href="#212">212</a> 	    {
+<a class="jxr_linenumber" name="213" href="#213">213</a> 	      String instanceName = <span class="jxr_string">"localhost_"</span> + (12918 + i);
+<a class="jxr_linenumber" name="214" href="#214">214</a> 
+<a class="jxr_linenumber" name="215" href="#215">215</a> 	      participants[i] = <strong class="jxr_keyword">new</strong> MockParticipant(clusterName, instanceName, ZK_ADDR, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="216" href="#216">216</a> 	      participants[i].syncStart();
+<a class="jxr_linenumber" name="217" href="#217">217</a> 	    }
+<a class="jxr_linenumber" name="218" href="#218">218</a> 
+<a class="jxr_linenumber" name="219" href="#219">219</a> 	    <strong class="jxr_keyword">boolean</strong> result =
+<a class="jxr_linenumber" name="220" href="#220">220</a> 	        ClusterStateVerifier.verifyByZkCallback(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
+<a class="jxr_linenumber" name="221" href="#221">221</a> 	                                                                                 clusterName));
+<a class="jxr_linenumber" name="222" href="#222">222</a> 	    Assert.assertTrue(result);
+<a class="jxr_linenumber" name="223" href="#223">223</a> 	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager controllerManager = controller.getManager();
+<a class="jxr_linenumber" name="224" href="#224">224</a> 	    <strong class="jxr_keyword">final</strong> ZkHelixTestManager participantManager = participants[0].getManager();
+<a class="jxr_linenumber" name="225" href="#225">225</a> 
+<a class="jxr_linenumber" name="226" href="#226">226</a> 	    <em class="jxr_comment">// wait until we get all the listeners registered</em>
+<a class="jxr_linenumber" name="227" href="#227">227</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="228" href="#228">228</a>         
+<a class="jxr_linenumber" name="229" href="#229">229</a>         @Override
+<a class="jxr_linenumber" name="230" href="#230">230</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="231" href="#231">231</a>           <strong class="jxr_keyword">int</strong> controllerHandlerNb = controllerManager.getHandlers().size();
+<a class="jxr_linenumber" name="232" href="#232">232</a>           <strong class="jxr_keyword">int</strong> particHandlerNb = participantManager.getHandlers().size();
+<a class="jxr_linenumber" name="233" href="#233">233</a>           <strong class="jxr_keyword">if</strong> (controllerHandlerNb == 9 &amp;&amp; particHandlerNb == 2)
+<a class="jxr_linenumber" name="234" href="#234">234</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="235" href="#235">235</a>           <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="236" href="#236">236</a>             <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="237" href="#237">237</a>         }
+<a class="jxr_linenumber" name="238" href="#238">238</a>       }, 1000);
+<a class="jxr_linenumber" name="239" href="#239">239</a> 	    
+<a class="jxr_linenumber" name="240" href="#240">240</a> 	    <strong class="jxr_keyword">int</strong> controllerHandlerNb = controllerManager.getHandlers().size();
+<a class="jxr_linenumber" name="241" href="#241">241</a> 	    <strong class="jxr_keyword">int</strong> particHandlerNb = participantManager.getHandlers().size();
+<a class="jxr_linenumber" name="242" href="#242">242</a>     	Assert.assertEquals(controllerHandlerNb, 9, <span class="jxr_string">"HelixController should have 9 (5+2n) callback handlers for 2 participant, but was "</span> 
+<a class="jxr_linenumber" name="243" href="#243">243</a>     	    		+ controllerHandlerNb + <span class="jxr_string">", "</span>
+<a class="jxr_linenumber" name="244" href="#244">244</a>     	    		+ printHandlers(controllerManager));
+<a class="jxr_linenumber" name="245" href="#245">245</a>     	Assert.assertEquals(particHandlerNb, 2, <span class="jxr_string">"HelixParticipant should have 2 (msg+cur-state) callback handlers, but was "</span> 
+<a class="jxr_linenumber" name="246" href="#246">246</a>     	    		+ particHandlerNb + <span class="jxr_string">", "</span>
+<a class="jxr_linenumber" name="247" href="#247">247</a>     	    		+ printHandlers(participantManager));
+<a class="jxr_linenumber" name="248" href="#248">248</a> 
+<a class="jxr_linenumber" name="249" href="#249">249</a> 	    <em class="jxr_comment">// expire controller</em>
+<a class="jxr_linenumber" name="250" href="#250">250</a> 	    System.out.println(<span class="jxr_string">"Expiring controller session..."</span>);
+<a class="jxr_linenumber" name="251" href="#251">251</a> 	    String oldSessionId = controllerManager.getSessionId();
+<a class="jxr_linenumber" name="252" href="#252">252</a> 	    
+<a class="jxr_linenumber" name="253" href="#253">253</a> 	    ZkTestHelper.expireSession(controllerManager.getZkClient());
+<a class="jxr_linenumber" name="254" href="#254">254</a> 	    String newSessionId = controllerManager.getSessionId();
+<a class="jxr_linenumber" name="255" href="#255">255</a> 	    System.out.println(<span class="jxr_string">"Expired controller session. oldSessionId: "</span> + oldSessionId + <span class="jxr_string">", newSessionId: "</span> + newSessionId);
+<a class="jxr_linenumber" name="256" href="#256">256</a> 	    
+<a class="jxr_linenumber" name="257" href="#257">257</a> 	    result =
+<a class="jxr_linenumber" name="258" href="#258">258</a> 	        ClusterStateVerifier.verifyByPolling(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(ZK_ADDR,
+<a class="jxr_linenumber" name="259" href="#259">259</a> 	                                                                                                   clusterName));
+<a class="jxr_linenumber" name="260" href="#260">260</a> 	    Assert.assertTrue(result);
+<a class="jxr_linenumber" name="261" href="#261">261</a> 	    
+<a class="jxr_linenumber" name="262" href="#262">262</a> 	    <em class="jxr_comment">// check controller zk-watchers</em>
+<a class="jxr_linenumber" name="263" href="#263">263</a>      result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="264" href="#264">264</a>         
+<a class="jxr_linenumber" name="265" href="#265">265</a>         @Override
+<a class="jxr_linenumber" name="266" href="#266">266</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="267" href="#267">267</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
+<a class="jxr_linenumber" name="268" href="#268">268</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + controllerManager.getSessionId());
+<a class="jxr_linenumber" name="269" href="#269">269</a>           <em class="jxr_comment">// System.out.println("controller watch paths after session expiry: " + watchPaths);</em>
+<a class="jxr_linenumber" name="270" href="#270">270</a>           
+<a class="jxr_linenumber" name="271" href="#271">271</a>           <em class="jxr_comment">// controller should have 5 + 2n + m + (m+2)n zk-watchers</em>
+<a class="jxr_linenumber" name="272" href="#272">272</a>           <em class="jxr_comment">// where n is number of nodes and m is number of resources</em>
+<a class="jxr_linenumber" name="273" href="#273">273</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == (6 + 5 * n);
+<a class="jxr_linenumber" name="274" href="#274">274</a>         }
+<a class="jxr_linenumber" name="275" href="#275">275</a>       }, 500);
+<a class="jxr_linenumber" name="276" href="#276">276</a>       Assert.assertTrue(result, <span class="jxr_string">"Controller should have 6 + 5*n zk-watchers after session expiry."</span>);
+<a class="jxr_linenumber" name="277" href="#277">277</a> 
+<a class="jxr_linenumber" name="278" href="#278">278</a>       <em class="jxr_comment">// check participant zk-watchers</em>
+<a class="jxr_linenumber" name="279" href="#279">279</a>       result = TestHelper.verify(<strong class="jxr_keyword">new</strong> TestHelper.Verifier() {
+<a class="jxr_linenumber" name="280" href="#280">280</a>         
+<a class="jxr_linenumber" name="281" href="#281">281</a>         @Override
+<a class="jxr_linenumber" name="282" href="#282">282</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> verify() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="283" href="#283">283</a>           Map&lt;String, Set&lt;String&gt;&gt; watchers = ZkTestHelper.getListenersBySession(ZK_ADDR);
+<a class="jxr_linenumber" name="284" href="#284">284</a>           Set&lt;String&gt; watchPaths = watchers.get(<span class="jxr_string">"0x"</span> + participantManager.getSessionId());
+<a class="jxr_linenumber" name="285" href="#285">285</a>           <em class="jxr_comment">// System.out.println("participant watch paths after session expiry: " + watchPaths);</em>
+<a class="jxr_linenumber" name="286" href="#286">286</a>           
+<a class="jxr_linenumber" name="287" href="#287">287</a>           <em class="jxr_comment">// participant should have 2 zk-watchers: 1 for MESSAGE and 1 for CONTROLLER</em>
+<a class="jxr_linenumber" name="288" href="#288">288</a>           <strong class="jxr_keyword">return</strong> watchPaths.size() == 2;
+<a class="jxr_linenumber" name="289" href="#289">289</a>         }
+<a class="jxr_linenumber" name="290" href="#290">290</a>       }, 500);
+<a class="jxr_linenumber" name="291" href="#291">291</a>       Assert.assertTrue(result, <span class="jxr_string">"Participant should have 2 zk-watchers after session expiry."</span>);
+<a class="jxr_linenumber" name="292" href="#292">292</a> 	    
+<a class="jxr_linenumber" name="293" href="#293">293</a> 	    <em class="jxr_comment">// check HelixManager#_handlers</em>
+<a class="jxr_linenumber" name="294" href="#294">294</a> 	    <em class="jxr_comment">// printHandlers(controllerManager);</em>
+<a class="jxr_linenumber" name="295" href="#295">295</a> 	    <strong class="jxr_keyword">int</strong> handlerNb = controllerManager.getHandlers().size();
+<a class="jxr_linenumber" name="296" href="#296">296</a> 	    Assert.assertEquals(handlerNb, controllerHandlerNb, <span class="jxr_string">"controller callback handlers should not increase after participant session expiry, but was "</span>
+<a class="jxr_linenumber" name="297" href="#297">297</a> 	    		+ printHandlers(controllerManager));
+<a class="jxr_linenumber" name="298" href="#298">298</a> 	    handlerNb = participantManager.getHandlers().size();
+<a class="jxr_linenumber" name="299" href="#299">299</a> 	    Assert.assertEquals(handlerNb, particHandlerNb, <span class="jxr_string">"participant callback handlers should not increase after participant session expiry, but was "</span> 
+<a class="jxr_linenumber" name="300" href="#300">300</a> 	    		+ printHandlers(participantManager));
 <a class="jxr_linenumber" name="301" href="#301">301</a> 
-<a class="jxr_linenumber" name="302" href="#302">302</a> 	    System.out.println(<span class="jxr_string">"END "</span> + clusterName + <span class="jxr_string">" at "</span>
-<a class="jxr_linenumber" name="303" href="#303">303</a> 	            + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
-<a class="jxr_linenumber" name="304" href="#304">304</a> 	}
-<a class="jxr_linenumber" name="305" href="#305">305</a> 
-<a class="jxr_linenumber" name="306" href="#306">306</a> 	<em class="jxr_comment">// debug</em>
-<a class="jxr_linenumber" name="307" href="#307">307</a> 	<strong class="jxr_keyword">static</strong> String printHandlers(<a href="../../../../org/apache/helix/ZkHelixTestManager.html">ZkHelixTestManager</a> manager) 
-<a class="jxr_linenumber" name="308" href="#308">308</a> 	{
-<a class="jxr_linenumber" name="309" href="#309">309</a> 		StringBuilder sb = <strong class="jxr_keyword">new</strong> StringBuilder();
-<a class="jxr_linenumber" name="310" href="#310">310</a> 	    List&lt;CallbackHandler&gt; handlers = manager.getHandlers();
-<a class="jxr_linenumber" name="311" href="#311">311</a>     	sb.append(manager.getInstanceName() + <span class="jxr_string">" has "</span> + handlers.size() + <span class="jxr_string">" cb-handlers. ["</span>);
-<a class="jxr_linenumber" name="312" href="#312">312</a>     	
-<a class="jxr_linenumber" name="313" href="#313">313</a> 	    <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; handlers.size(); i++) {
-<a class="jxr_linenumber" name="314" href="#314">314</a> 	    	CallbackHandler handler = handlers.get(i);
-<a class="jxr_linenumber" name="315" href="#315">315</a> 	    	String path = handler.getPath();
-<a class="jxr_linenumber" name="316" href="#316">316</a> 	    	sb.append(path.substring(manager.getClusterName().length() + 1) + <span class="jxr_string">": "</span> + handler.getListener());
-<a class="jxr_linenumber" name="317" href="#317">317</a> 	    	<strong class="jxr_keyword">if</strong> (i &lt; (handlers.size() - 1) ) {
-<a class="jxr_linenumber" name="318" href="#318">318</a> 	    		sb.append(<span class="jxr_string">", "</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> 	    sb.append(<span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="322" href="#322">322</a> 	    
-<a class="jxr_linenumber" name="323" href="#323">323</a> 	    <strong class="jxr_keyword">return</strong> sb.toString();
-<a class="jxr_linenumber" name="324" href="#324">324</a>     }
-<a class="jxr_linenumber" name="325" href="#325">325</a> }
+<a class="jxr_linenumber" name="302" href="#302">302</a> 
+<a class="jxr_linenumber" name="303" href="#303">303</a> 	    System.out.println(<span class="jxr_string">"END "</span> + clusterName + <span class="jxr_string">" at "</span>
+<a class="jxr_linenumber" name="304" href="#304">304</a> 	            + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
+<a class="jxr_linenumber" name="305" href="#305">305</a> 	}
+<a class="jxr_linenumber" name="306" href="#306">306</a> 
+<a class="jxr_linenumber" name="307" href="#307">307</a> 
+<a class="jxr_linenumber" name="308" href="#308">308</a>     @Test
+<a class="jxr_linenumber" name="309" href="#309">309</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testRemoveUserCbHandlerOnPathRemoval() <strong class="jxr_keyword">throws</strong>  Exception {
+<a class="jxr_linenumber" name="310" href="#310">310</a>         String className = TestHelper.getTestClassName();
+<a class="jxr_linenumber" name="311" href="#311">311</a>         String methodName = TestHelper.getTestMethodName();
+<a class="jxr_linenumber" name="312" href="#312">312</a>         String clusterName = className + <span class="jxr_string">"_"</span> + methodName;
+<a class="jxr_linenumber" name="313" href="#313">313</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> n = 3;
+<a class="jxr_linenumber" name="314" href="#314">314</a>         <strong class="jxr_keyword">final</strong> String zkAddr = ZK_ADDR;
+<a class="jxr_linenumber" name="315" href="#315">315</a>         System.out.println(<span class="jxr_string">"START "</span> + clusterName + <span class="jxr_string">" at "</span> + <strong class="jxr_keyword">new</strong> Date(System.currentTimeMillis()));
+<a class="jxr_linenumber" name="316" href="#316">316</a> 
+<a class="jxr_linenumber" name="317" href="#317">317</a>         TestHelper.setupCluster(clusterName, zkAddr, 12918,
+<a class="jxr_linenumber" name="318" href="#318">318</a>                 <span class="jxr_string">"localhost"</span>,
+<a class="jxr_linenumber" name="319" href="#319">319</a>                 <span class="jxr_string">"TestDB"</span>,
+<a class="jxr_linenumber" name="320" href="#320">320</a>                 1,  <em class="jxr_comment">// resource</em>
+<a class="jxr_linenumber" name="321" href="#321">321</a>                 32, <em class="jxr_comment">// partitions</em>
+<a class="jxr_linenumber" name="322" href="#322">322</a>                 n,  <em class="jxr_comment">// nodes</em>
+<a class="jxr_linenumber" name="323" href="#323">323</a>                 2,  <em class="jxr_comment">// replicas</em>
+<a class="jxr_linenumber" name="324" href="#324">324</a>                 <span class="jxr_string">"MasterSlave"</span>,
+<a class="jxr_linenumber" name="325" href="#325">325</a>                 <strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="326" href="#326">326</a> 
+<a class="jxr_linenumber" name="327" href="#327">327</a>         <a href="../../../../org/apache/helix/mock/controller/ClusterController.html">ClusterController</a> controller = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/mock/controller/ClusterController.html">ClusterController</a>(clusterName, <span class="jxr_string">"controller_0"</span>, zkAddr);
+<a class="jxr_linenumber" name="328" href="#328">328</a>         controller.syncStart();
+<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/mock/participant/MockParticipant.html">MockParticipant</a>[] participants = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/mock/participant/MockParticipant.html">MockParticipant</a>[n];
+<a class="jxr_linenumber" name="331" href="#331">331</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; n; i++) {
+<a class="jxr_linenumber" name="332" href="#332">332</a>             String instanceName = <span class="jxr_string">"localhost_"</span> + (12918 + i);
+<a class="jxr_linenumber" name="333" href="#333">333</a>             participants[i] = <strong class="jxr_keyword">new</strong> <a href="../../../../org/apache/helix/mock/participant/MockParticipant.html">MockParticipant</a>(clusterName, instanceName, zkAddr, <strong class="jxr_keyword">null</strong>);
+<a class="jxr_linenumber" name="334" href="#334">334</a>             participants[i].syncStart();
+<a class="jxr_linenumber" name="335" href="#335">335</a> 
+<a class="jxr_linenumber" name="336" href="#336">336</a>             <em class="jxr_comment">// register a controller listener on participant_0</em>
+<a class="jxr_linenumber" name="337" href="#337">337</a>             <strong class="jxr_keyword">if</strong> (i == 0) {
+<a class="jxr_linenumber" name="338" href="#338">338</a>                 <a href="../../../../org/apache/helix/ZkHelixTestManager.html">ZkHelixTestManager</a> manager = participants[0].getManager();
+<a class="jxr_linenumber" name="339" href="#339">339</a>                 manager.addCurrentStateChangeListener(<strong class="jxr_keyword">new</strong> CurrentStateChangeListener() {
+<a class="jxr_linenumber" name="340" href="#340">340</a>                     @Override
+<a class="jxr_linenumber" name="341" href="#341">341</a>                     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> onStateChange(String instanceName, List&lt;CurrentState&gt; statesInfo, NotificationContext changeContext) {
+<a class="jxr_linenumber" name="342" href="#342">342</a>                         <em class="jxr_comment">//To change body of implemented methods use File | Settings | File Templates.</em>
+<a class="jxr_linenumber" name="343" href="#343">343</a>                         <em class="jxr_comment">// System.out.println(instanceName + " on current-state change, type: " + changeContext.getType());</em>
+<a class="jxr_linenumber" name="344" href="#344">344</a>                     }
+<a class="jxr_linenumber" name="345" href="#345">345</a>                 }, manager.getInstanceName(), manager.getSessionId());
+<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> 
+<a class="jxr_linenumber" name="349" href="#349">349</a>         Boolean result = ClusterStateVerifier.verifyByZkCallback(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(zkAddr,
+<a class="jxr_linenumber" name="350" href="#350">350</a>                 clusterName));
+<a class="jxr_linenumber" name="351" href="#351">351</a>         Assert.assertTrue(result);
+<a class="jxr_linenumber" name="352" href="#352">352</a> 
+<a class="jxr_linenumber" name="353" href="#353">353</a>         <a href="../../../../org/apache/helix/ZkHelixTestManager.html">ZkHelixTestManager</a> participantToExpire = participants[0].getManager();
+<a class="jxr_linenumber" name="354" href="#354">354</a>         String oldSessionId = participantToExpire.getSessionId();
+<a class="jxr_linenumber" name="355" href="#355">355</a>         PropertyKey.Builder keyBuilder = <strong class="jxr_keyword">new</strong> PropertyKey.Builder(clusterName);
+<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="358" href="#358">358</a>         <em class="jxr_comment">// check manager#hanlders</em>
+<a class="jxr_linenumber" name="359" href="#359">359</a>         Assert.assertEquals(participantToExpire.getHandlers().size(), 3, <span class="jxr_string">"Should have 3 handlers: CURRENTSTATE/{sessionId}, CONTROLLER, and MESSAGES"</span>);
+<a class="jxr_linenumber" name="360" href="#360">360</a> 
+<a class="jxr_linenumber" name="361" href="#361">361</a>         <em class="jxr_comment">// check zkclient#listeners</em>
+<a class="jxr_linenumber" name="362" href="#362">362</a>         Map&lt;String, Set&lt;IZkDataListener&gt;&gt; dataListeners = ZkTestHelper.getZkDataListener(participantToExpire.getZkClient());
+<a class="jxr_linenumber" name="363" href="#363">363</a>         Map&lt;String, Set&lt;IZkChildListener&gt;&gt; childListeners = ZkTestHelper.getZkChildListener(participantToExpire.getZkClient());
+<a class="jxr_linenumber" name="364" href="#364">364</a>         <em class="jxr_comment">// printZkListeners(participantToExpire.getZkClient());</em>
+<a class="jxr_linenumber" name="365" href="#365">365</a>         Assert.assertEquals(dataListeners.size(), 1, <span class="jxr_string">"Should have 1 path (CURRENTSTATE/{sessionId}/TestDB0) which has 1 data-listeners"</span>);
+<a class="jxr_linenumber" name="366" href="#366">366</a>         String path = keyBuilder.currentState(participantToExpire.getInstanceName(), oldSessionId, <span class="jxr_string">"TestDB0"</span>).getPath();
+<a class="jxr_linenumber" name="367" href="#367">367</a>         Assert.assertEquals(dataListeners.get(path).size(), 1, <span class="jxr_string">"Should have 1 data-listeners on path: "</span> + path);
+<a class="jxr_linenumber" name="368" href="#368">368</a>         Assert.assertEquals(childListeners.size(), 3, <span class="jxr_string">"Should have 3 paths (CURRENTSTATE/{sessionId}, CONTROLLER, and MESSAGES) each of which has 1 child-listener"</span>);
+<a class="jxr_linenumber" name="369" href="#369">369</a>         path = keyBuilder.currentStates(participantToExpire.getInstanceName(), oldSessionId).getPath();
+<a class="jxr_linenumber" name="370" href="#370">370</a>         Assert.assertEquals(childListeners.get(path).size(), 1, <span class="jxr_string">"Should have 1 child-listener on path: "</span> + path);
+<a class="jxr_linenumber" name="371" href="#371">371</a>         path = keyBuilder.messages(participantToExpire.getInstanceName()).getPath();
+<a class="jxr_linenumber" name="372" href="#372">372</a>         Assert.assertEquals(childListeners.get(path).size(), 1, <span class="jxr_string">"Should have 1 child-listener on path: "</span> + path);
+<a class="jxr_linenumber" name="373" href="#373">373</a>         path = keyBuilder.controller().getPath();
+<a class="jxr_linenumber" name="374" href="#374">374</a>         Assert.assertEquals(childListeners.get(path).size(), 1, <span class="jxr_string">"Should have 1 child-listener on path: "</span> + path);
+<a class="jxr_linenumber" name="375" href="#375">375</a> 
+<a class="jxr_linenumber" name="376" href="#376">376</a>         <em class="jxr_comment">// check zookeeper#watches on client side</em>
+<a class="jxr_linenumber" name="377" href="#377">377</a>         Map&lt;String, List&lt;String&gt;&gt; watchPaths = ZkTestHelper.getZkWatch(participantToExpire.getZkClient());
+<a class="jxr_linenumber" name="378" href="#378">378</a>         <em class="jxr_comment">// System.out.println("localhost_12918 zk-client side watchPaths: " + watchPaths + "\n");</em>
+<a class="jxr_linenumber" name="379" href="#379">379</a>         Assert.assertEquals(watchPaths.get(<span class="jxr_string">"dataWatches"</span>).size(), 4, <span class="jxr_string">"Should have 4 data-watches: CURRENTSTATE/{sessionId}, CURRENTSTATE/{sessionId}/TestDB, CONTROLLER, MESSAGES"</span>);
+<a class="jxr_linenumber" name="380" href="#380">380</a>         Assert.assertEquals(watchPaths.get(<span class="jxr_string">"childWatches"</span>).size(), 3, <span class="jxr_string">"Should have 3 child-watches: CONTROLLER, MESSAGES, and CURRENTSTATE/{sessionId}"</span>);
+<a class="jxr_linenumber" name="381" href="#381">381</a> 
+<a class="jxr_linenumber" name="382" href="#382">382</a> 
+<a class="jxr_linenumber" name="383" href="#383">383</a>         <em class="jxr_comment">// expire localhost_12918</em>
+<a class="jxr_linenumber" name="384" href="#384">384</a>         System.out.println(<span class="jxr_string">"Expire participant: "</span> + participantToExpire.getInstanceName() + <span class="jxr_string">", session: "</span> + participantToExpire.getSessionId());
+<a class="jxr_linenumber" name="385" href="#385">385</a>         ZkTestHelper.expireSession(participantToExpire.getZkClient());
+<a class="jxr_linenumber" name="386" href="#386">386</a>         String newSessionId = participantToExpire.getSessionId();
+<a class="jxr_linenumber" name="387" href="#387">387</a>         System.out.println(participantToExpire.getInstanceName() + <span class="jxr_string">" oldSessionId: "</span> + oldSessionId + <span class="jxr_string">", newSessionId: "</span> + newSessionId);
+<a class="jxr_linenumber" name="388" href="#388">388</a>         result = ClusterStateVerifier.verifyByZkCallback(<strong class="jxr_keyword">new</strong> ClusterStateVerifier.BestPossAndExtViewZkVerifier(zkAddr,
+<a class="jxr_linenumber" name="389" href="#389">389</a>                 clusterName));
+<a class="jxr_linenumber" name="390" href="#390">390</a>         Assert.assertTrue(result);
+<a class="jxr_linenumber" name="391" href="#391">391</a> 
+<a class="jxr_linenumber" name="392" href="#392">392</a>         <em class="jxr_comment">// check manager#hanlders</em>
+<a class="jxr_linenumber" name="393" href="#393">393</a>         Assert.assertEquals(participantToExpire.getHandlers().size(), 2, <span class="jxr_string">"Should have 2 handlers: CONTROLLER and MESSAGES. CURRENTSTATE/{sessionId} handler should be removed by CallbackHandler#handleChildChange()"</span>);
+<a class="jxr_linenumber" name="394" href="#394">394</a> 
+<a class="jxr_linenumber" name="395" href="#395">395</a>         <em class="jxr_comment">// check zkclient#listeners</em>
+<a class="jxr_linenumber" name="396" href="#396">396</a>         dataListeners = ZkTestHelper.getZkDataListener(participantToExpire.getZkClient());
+<a class="jxr_linenumber" name="397" href="#397">397</a>         childListeners = ZkTestHelper.getZkChildListener(participantToExpire.getZkClient());
+<a class="jxr_linenumber" name="398" href="#398">398</a>         <em class="jxr_comment">// printZkListeners(participantToExpire.getZkClient());</em>
+<a class="jxr_linenumber" name="399" href="#399">399</a>         Assert.assertTrue(dataListeners.isEmpty(), <span class="jxr_string">"Should have no data-listeners"</span>);
+<a class="jxr_linenumber" name="400" href="#400">400</a>         Assert.assertEquals(childListeners.size(), 3, <span class="jxr_string">"Should have 3 paths (CURRENTSTATE/{oldSessionId}, CONTROLLER, and MESSAGES). "</span>
+<a class="jxr_linenumber" name="401" href="#401">401</a>                 + <span class="jxr_string">"CONTROLLER and MESSAGE has 1 child-listener each. CURRENTSTATE/{oldSessionId} doesn't have listener (ZkClient doesn't remove empty childListener set. probably a ZkClient bug. see ZkClient#unsubscribeChildChange())"</span>);
+<a class="jxr_linenumber" name="402" href="#402">402</a>         path = keyBuilder.currentStates(participantToExpire.getInstanceName(), oldSessionId).getPath();
+<a class="jxr_linenumber" name="403" href="#403">403</a>         Assert.assertEquals(childListeners.get(path).size(), 0, <span class="jxr_string">"Should have no child-listener on path: "</span> + path);
+<a class="jxr_linenumber" name="404" href="#404">404</a>         path = keyBuilder.messages(participantToExpire.getInstanceName()).getPath();
+<a class="jxr_linenumber" name="405" href="#405">405</a>         Assert.assertEquals(childListeners.get(path).size(), 1, <span class="jxr_string">"Should have 1 child-listener on path: "</span> + path);
+<a class="jxr_linenumber" name="406" href="#406">406</a>         path = keyBuilder.controller().getPath();

[... 78 lines stripped ...]


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