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From dbirds...@apache.org
Subject [08/27] trafodion-site git commit: Merge [TRAFODION-2909] PR 1399 and [TRAFODION-2910] PR 1400
Date Thu, 18 Jan 2018 19:07:40 GMT
http://git-wip-us.apache.org/repos/asf/trafodion-site/blob/fb76ef66/docs/dcs_reference/xref/org/trafodion/dcs/master/ServerManager.html
----------------------------------------------------------------------
diff --git a/docs/dcs_reference/xref/org/trafodion/dcs/master/ServerManager.html b/docs/dcs_reference/xref/org/trafodion/dcs/master/ServerManager.html
index e607d4e..65a572e 100644
--- a/docs/dcs_reference/xref/org/trafodion/dcs/master/ServerManager.html
+++ b/docs/dcs_reference/xref/org/trafodion/dcs/master/ServerManager.html
@@ -33,778 +33,822 @@
 <a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">package</strong> org.trafodion.dcs.master;
 <a class="jxr_linenumber" name="24" href="#24">24</a>  
 <a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.net.InetAddress;
-<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> java.io.IOException;
-<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.io.InputStream;
-<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> java.io.InputStreamReader;
-<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> java.io.BufferedReader;
-<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> java.io.FileReader;
-<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> java.io.FileNotFoundException;
-<a class="jxr_linenumber" name="33" href="#33">33</a>  
-<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.util.Scanner;
-<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> java.util.Collections;
-<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
-<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.util.LinkedList;
-<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> java.util.Queue;
-<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.util.List;
-<a class="jxr_linenumber" name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
-<a class="jxr_linenumber" name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Callable;
-<a class="jxr_linenumber" name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Executors;
-<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ExecutorService;
-<a class="jxr_linenumber" name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Future;
-<a class="jxr_linenumber" name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ExecutionException;
-<a class="jxr_linenumber" name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
-<a class="jxr_linenumber" name="47" href="#47">47</a>  <strong class="jxr_keyword">import</strong> java.util.Comparator;
-<a class="jxr_linenumber" name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
-<a class="jxr_linenumber" name="49" href="#49">49</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
-<a class="jxr_linenumber" name="50" href="#50">50</a>  
-<a class="jxr_linenumber" name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> java.text.DateFormat;
-<a class="jxr_linenumber" name="52" href="#52">52</a>  
-<a class="jxr_linenumber" name="53" href="#53">53</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.*;
-<a class="jxr_linenumber" name="54" href="#54">54</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.data.Stat;
-<a class="jxr_linenumber" name="55" href="#55">55</a>  
-<a class="jxr_linenumber" name="56" href="#56">56</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
-<a class="jxr_linenumber" name="57" href="#57">57</a>  
-<a class="jxr_linenumber" name="58" href="#58">58</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
-<a class="jxr_linenumber" name="59" href="#59">59</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
-<a class="jxr_linenumber" name="60" href="#60">60</a>  
-<a class="jxr_linenumber" name="61" href="#61">61</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.master.RunningServer;
-<a class="jxr_linenumber" name="62" href="#62">62</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.master.RegisteredServer;
-<a class="jxr_linenumber" name="63" href="#63">63</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.master.Metrics;
-<a class="jxr_linenumber" name="64" href="#64">64</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.script.ScriptManager;
-<a class="jxr_linenumber" name="65" href="#65">65</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.script.ScriptContext;
-<a class="jxr_linenumber" name="66" href="#66">66</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.Constants;
-<a class="jxr_linenumber" name="67" href="#67">67</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.zookeeper.ZkClient;
-<a class="jxr_linenumber" name="68" href="#68">68</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.*;
-<a class="jxr_linenumber" name="69" href="#69">69</a>  
-<a class="jxr_linenumber" name="70" href="#70">70</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jettison.json.JSONArray;
-<a class="jxr_linenumber" name="71" href="#71">71</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jettison.json.JSONException;
-<a class="jxr_linenumber" name="72" href="#72">72</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jettison.json.JSONObject;
-<a class="jxr_linenumber" name="73" href="#73">73</a>  
-<a class="jxr_linenumber" name="74" href="#74">74</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">ServerManager</a> <strong class="jxr_keyword">implements</strong> Callable {
-<a class="jxr_linenumber" name="75" href="#75">75</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(ServerManager.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/master/DcsMaster.html">DcsMaster</a> master;
-<a class="jxr_linenumber" name="77" href="#77">77</a>      <strong class="jxr_keyword">private</strong> Configuration conf;
-<a class="jxr_linenumber" name="78" href="#78">78</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/DcsNetworkConfiguration.html">DcsNetworkConfiguration</a> netConf;
-<a class="jxr_linenumber" name="79" href="#79">79</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a> zkc = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="80" href="#80">80</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> startupTimestamp;
-<a class="jxr_linenumber" name="81" href="#81">81</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> maxRestartAttempts;
-<a class="jxr_linenumber" name="82" href="#82">82</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> retryIntervalMillis;
-<a class="jxr_linenumber" name="83" href="#83">83</a>      <strong class="jxr_keyword">private</strong> ExecutorService pool = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="84" href="#84">84</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/master/Metrics.html">Metrics</a> metrics;
-<a class="jxr_linenumber" name="85" href="#85">85</a>      <strong class="jxr_keyword">private</strong> String parentZnode;
-<a class="jxr_linenumber" name="86" href="#86">86</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a> retryCounterFactory;
-<a class="jxr_linenumber" name="87" href="#87">87</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;String&gt; configuredServers = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
-<a class="jxr_linenumber" name="88" href="#88">88</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map&lt;String, ServerPortMap&gt; serverPortMap = <strong class="jxr_keyword">new</strong> HashMap&lt;String, ServerPortMap&gt;();
-<a class="jxr_linenumber" name="89" href="#89">89</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;String&gt; runningServers = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
-<a class="jxr_linenumber" name="90" href="#90">90</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;String&gt; registeredServers = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
-<a class="jxr_linenumber" name="91" href="#91">91</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Queue&lt;RestartHandler&gt; restartQueue = <strong class="jxr_keyword">new</strong> LinkedList&lt;RestartHandler&gt;();
-<a class="jxr_linenumber" name="92" href="#92">92</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;ServerItem&gt; serverItemList = <strong class="jxr_keyword">new</strong> ArrayList&lt;ServerItem&gt;();
-<a class="jxr_linenumber" name="93" href="#93">93</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> trafodionQueryToolsEnabled;
-<a class="jxr_linenumber" name="94" href="#94">94</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/JdbcT4Util.html">JdbcT4Util</a> jdbcT4Util = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="95" href="#95">95</a>  
-<a class="jxr_linenumber" name="96" href="#96">96</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">ServerManager</a>(<a href="../../../../org/trafodion/dcs/master/DcsMaster.html">DcsMaster</a> master, Configuration conf, <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a> zkc,
-<a class="jxr_linenumber" name="97" href="#97">97</a>              <a href="../../../../org/trafodion/dcs/util/DcsNetworkConfiguration.html">DcsNetworkConfiguration</a> netConf, <strong class="jxr_keyword">long</strong> startupTimestamp,
-<a class="jxr_linenumber" name="98" href="#98">98</a>              <a href="../../../../org/trafodion/dcs/master/Metrics.html">Metrics</a> metrics) <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="99" href="#99">99</a>          <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="100" href="#100">100</a>             <strong class="jxr_keyword">this</strong>.master = master;
-<a class="jxr_linenumber" name="101" href="#101">101</a>             <strong class="jxr_keyword">this</strong>.conf = conf;
-<a class="jxr_linenumber" name="102" href="#102">102</a>             <strong class="jxr_keyword">this</strong>.zkc = zkc;
-<a class="jxr_linenumber" name="103" href="#103">103</a>             <strong class="jxr_keyword">this</strong>.netConf = netConf;
-<a class="jxr_linenumber" name="104" href="#104">104</a>             <strong class="jxr_keyword">this</strong>.startupTimestamp = startupTimestamp;
-<a class="jxr_linenumber" name="105" href="#105">105</a>             <strong class="jxr_keyword">this</strong>.metrics = metrics;
-<a class="jxr_linenumber" name="106" href="#106">106</a>             maxRestartAttempts = conf
-<a class="jxr_linenumber" name="107" href="#107">107</a>                     .getInt(Constants.DCS_MASTER_SERVER_RESTART_HANDLER_ATTEMPTS,
-<a class="jxr_linenumber" name="108" href="#108">108</a>                             Constants.DEFAULT_DCS_MASTER_SERVER_RESTART_HANDLER_ATTEMPTS);
-<a class="jxr_linenumber" name="109" href="#109">109</a>             retryIntervalMillis = conf
-<a class="jxr_linenumber" name="110" href="#110">110</a>                     .getInt(Constants.DCS_MASTER_SERVER_RESTART_HANDLER_RETRY_INTERVAL_MILLIS,
-<a class="jxr_linenumber" name="111" href="#111">111</a>                             Constants.DEFAULT_DCS_MASTER_SERVER_RESTART_HANDLER_RETRY_INTERVAL_MILLIS);
-<a class="jxr_linenumber" name="112" href="#112">112</a>             trafodionQueryToolsEnabled = conf.getBoolean(
-<a class="jxr_linenumber" name="113" href="#113">113</a>                     Constants.DCS_MASTER_TRAFODION_QUERY_TOOLS,
-<a class="jxr_linenumber" name="114" href="#114">114</a>                     Constants.DEFAULT_DCS_MASTER_TRAFODION_QUERY_TOOLS);
-<a class="jxr_linenumber" name="115" href="#115">115</a>             <strong class="jxr_keyword">if</strong> (trafodionQueryToolsEnabled)
-<a class="jxr_linenumber" name="116" href="#116">116</a>                 jdbcT4Util = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/util/JdbcT4Util.html">JdbcT4Util</a>(conf, netConf);
-<a class="jxr_linenumber" name="117" href="#117">117</a>             retryCounterFactory = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a>(maxRestartAttempts,
-<a class="jxr_linenumber" name="118" href="#118">118</a>                     retryIntervalMillis);
-<a class="jxr_linenumber" name="119" href="#119">119</a>             parentZnode = conf.get(Constants.ZOOKEEPER_ZNODE_PARENT,
-<a class="jxr_linenumber" name="120" href="#120">120</a>                     Constants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
-<a class="jxr_linenumber" name="121" href="#121">121</a>             pool = Executors.newSingleThreadExecutor();
-<a class="jxr_linenumber" name="122" href="#122">122</a>         } <strong class="jxr_keyword">catch</strong> (Exception e) {
-<a class="jxr_linenumber" name="123" href="#123">123</a>             e.printStackTrace();
-<a class="jxr_linenumber" name="124" href="#124">124</a>             <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="125" href="#125">125</a>                 LOG.error(e);
-<a class="jxr_linenumber" name="126" href="#126">126</a>             <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="127" href="#127">127</a>         }
-<a class="jxr_linenumber" name="128" href="#128">128</a>     }
-<a class="jxr_linenumber" name="129" href="#129">129</a> 
-<a class="jxr_linenumber" name="130" href="#130">130</a>     <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RestartHandler</a> <strong class="jxr_keyword">implements</strong> Callable&lt;ScriptContext&gt; {
-<a class="jxr_linenumber" name="131" href="#131">131</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> scriptContext = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a>();
-<a class="jxr_linenumber" name="132" href="#132">132</a>         <strong class="jxr_keyword">private</strong> String znodePath;
-<a class="jxr_linenumber" name="133" href="#133">133</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> childCount;
-<a class="jxr_linenumber" name="134" href="#134">134</a> 
-<a class="jxr_linenumber" name="135" href="#135">135</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RestartHandler</a>(String znodePath, <strong class="jxr_keyword">int</strong> childCount) {
-<a class="jxr_linenumber" name="136" href="#136">136</a>             <strong class="jxr_keyword">this</strong>.znodePath = znodePath;
-<a class="jxr_linenumber" name="137" href="#137">137</a>             <strong class="jxr_keyword">this</strong>.childCount = childCount;
-<a class="jxr_linenumber" name="138" href="#138">138</a>         }
-<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> <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> call() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="142" href="#142">142</a>             <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="143" href="#143">143</a>                 Scanner scn = <strong class="jxr_keyword">new</strong> Scanner(znodePath);
-<a class="jxr_linenumber" name="144" href="#144">144</a>                 scn.useDelimiter(<span class="jxr_string">":"</span>);
-<a class="jxr_linenumber" name="145" href="#145">145</a>                 String hostName = scn.next();<em class="jxr_comment">// host name</em>
-<a class="jxr_linenumber" name="146" href="#146">146</a>                 String instance = scn.next();<em class="jxr_comment">// instance</em>
-<a class="jxr_linenumber" name="147" href="#147">147</a>                 <strong class="jxr_keyword">int</strong> infoPort = Integer.parseInt(scn.next()); <em class="jxr_comment">// UI port</em>
-<a class="jxr_linenumber" name="148" href="#148">148</a>                 <strong class="jxr_keyword">long</strong> serverStartTimestamp = Long.parseLong(scn.next());
-<a class="jxr_linenumber" name="149" href="#149">149</a>                 scn.close();
-<a class="jxr_linenumber" name="150" href="#150">150</a> 
-<a class="jxr_linenumber" name="151" href="#151">151</a>                 <em class="jxr_comment">// Get the --config property from classpath...it's always first</em>
-<a class="jxr_linenumber" name="152" href="#152">152</a>                 <em class="jxr_comment">// in the classpath</em>
-<a class="jxr_linenumber" name="153" href="#153">153</a>                 String cp = System.getProperty(<span class="jxr_string">"java.class.path"</span>);
-<a class="jxr_linenumber" name="154" href="#154">154</a>                 scn = <strong class="jxr_keyword">new</strong> Scanner(cp);
-<a class="jxr_linenumber" name="155" href="#155">155</a>                 scn.useDelimiter(<span class="jxr_string">":"</span>);
-<a class="jxr_linenumber" name="156" href="#156">156</a>                 String confDir = scn.next();
-<a class="jxr_linenumber" name="157" href="#157">157</a>                 scn.close();
-<a class="jxr_linenumber" name="158" href="#158">158</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
-<a class="jxr_linenumber" name="159" href="#159">159</a>                     LOG.debug(<span class="jxr_string">"conf dir ["</span> + confDir + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="160" href="#160">160</a> 
-<a class="jxr_linenumber" name="161" href="#161">161</a>                 <em class="jxr_comment">// Get -Ddcs.home.dir</em>
-<a class="jxr_linenumber" name="162" href="#162">162</a>                 String dcsHome = System.getProperty(<span class="jxr_string">"dcs.home.dir"</span>);
-<a class="jxr_linenumber" name="163" href="#163">163</a> 
-<a class="jxr_linenumber" name="164" href="#164">164</a>                 <em class="jxr_comment">// If stop-dcs.sh is executed and DCS_MANAGES_ZK then zookeeper</em>
-<a class="jxr_linenumber" name="165" href="#165">165</a>                 <em class="jxr_comment">// is stopped abruptly.</em>
-<a class="jxr_linenumber" name="166" href="#166">166</a>                 <em class="jxr_comment">// Second scenario is when ZooKeeper fails for some reason</em>
-<a class="jxr_linenumber" name="167" href="#167">167</a>                 <em class="jxr_comment">// regardless of whether DCS</em>
-<a class="jxr_linenumber" name="168" href="#168">168</a>                 <em class="jxr_comment">// manages it. When either happens the DcsServer running znodes</em>
-<a class="jxr_linenumber" name="169" href="#169">169</a>                 <em class="jxr_comment">// still exist in ZooKeeper</em>
-<a class="jxr_linenumber" name="170" href="#170">170</a>                 <em class="jxr_comment">// and we see them at next startup. When they eventually timeout</em>
-<a class="jxr_linenumber" name="171" href="#171">171</a>                 <em class="jxr_comment">// we get node deleted events for a server that no longer</em>
-<a class="jxr_linenumber" name="172" href="#172">172</a>                 <em class="jxr_comment">// exists. So, only recognize</em>
-<a class="jxr_linenumber" name="173" href="#173">173</a>                 <em class="jxr_comment">// DcsServer running znodes that have timestamps after last</em>
-<a class="jxr_linenumber" name="174" href="#174">174</a>                 <em class="jxr_comment">// DcsMaster startup.</em>
-<a class="jxr_linenumber" name="175" href="#175">175</a>                 <em class="jxr_comment">//</em>
-<a class="jxr_linenumber" name="176" href="#176">176</a>                 <em class="jxr_comment">// But, if we are DcsMaster follower that is taking over from</em>
-<a class="jxr_linenumber" name="177" href="#177">177</a>                 <em class="jxr_comment">// failed one then ignore timestamp issues described above.</em>
-<a class="jxr_linenumber" name="178" href="#178">178</a>                 <em class="jxr_comment">// See MasterLeaderElection.elect()</em>
-<a class="jxr_linenumber" name="179" href="#179">179</a>                 <strong class="jxr_keyword">if</strong> ((master.isFollower() == false &amp;&amp; serverStartTimestamp &gt; startupTimestamp)
-<a class="jxr_linenumber" name="180" href="#180">180</a>                         || (master.isFollower() &amp;&amp; runningServers.size() &lt; configuredServers.size())) {
-<a class="jxr_linenumber" name="181" href="#181">181</a>                     scriptContext.setHostName(hostName);
-<a class="jxr_linenumber" name="182" href="#182">182</a>                     scriptContext
-<a class="jxr_linenumber" name="183" href="#183">183</a>                             .setScriptName(Constants.SYS_SHELL_SCRIPT_NAME);
-<a class="jxr_linenumber" name="184" href="#184">184</a> 
-<a class="jxr_linenumber" name="185" href="#185">185</a>                     <strong class="jxr_keyword">if</strong> (hostName.equalsIgnoreCase(netConf.getHostName()))
-<a class="jxr_linenumber" name="186" href="#186">186</a>                         scriptContext.setCommand(<span class="jxr_string">"bin/dcs-daemon.sh --config "</span>
-<a class="jxr_linenumber" name="187" href="#187">187</a>                                 + confDir + <span class="jxr_string">" start server "</span> + instance + <span class="jxr_string">" "</span>
-<a class="jxr_linenumber" name="188" href="#188">188</a>                                 + childCount);
-<a class="jxr_linenumber" name="189" href="#189">189</a>                     <strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="190" href="#190">190</a>                         scriptContext.setCommand(<span class="jxr_string">"pdsh -w "</span> + hostName
-<a class="jxr_linenumber" name="191" href="#191">191</a>                                 + <span class="jxr_string">" \&quot;cd "</span> + dcsHome
-<a class="jxr_linenumber" name="192" href="#192">192</a>                                 + <span class="jxr_string">";bin/dcs-daemon.sh --config "</span> + confDir
-<a class="jxr_linenumber" name="193" href="#193">193</a>                                 + <span class="jxr_string">" start server "</span> + instance + <span class="jxr_string">" "</span>
-<a class="jxr_linenumber" name="194" href="#194">194</a>                                 + childCount + <span class="jxr_string">"\&quot;"</span>);
-<a class="jxr_linenumber" name="195" href="#195">195</a> 
-<a class="jxr_linenumber" name="196" href="#196">196</a>                     <a href="../../../../org/trafodion/dcs/util/RetryCounter.html">RetryCounter</a> retryCounter = retryCounterFactory.create();
-<a class="jxr_linenumber" name="197" href="#197">197</a>                     <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="198" href="#198">198</a>                         <strong class="jxr_keyword">if</strong> (scriptContext.getStdOut().length() &gt; 0)
-<a class="jxr_linenumber" name="199" href="#199">199</a>                             scriptContext.getStdOut().delete(0,
-<a class="jxr_linenumber" name="200" href="#200">200</a>                                     scriptContext.getStdOut().length());
-<a class="jxr_linenumber" name="201" href="#201">201</a>                         <strong class="jxr_keyword">if</strong> (scriptContext.getStdErr().length() &gt; 0)
-<a class="jxr_linenumber" name="202" href="#202">202</a>                             scriptContext.getStdErr().delete(0,
-<a class="jxr_linenumber" name="203" href="#203">203</a>                                     scriptContext.getStdErr().length());
-<a class="jxr_linenumber" name="204" href="#204">204</a>                         LOG.info(<span class="jxr_string">"Restarting DcsServer ["</span> + hostName + <span class="jxr_string">":"</span>
-<a class="jxr_linenumber" name="205" href="#205">205</a>                                 + instance + <span class="jxr_string">"], script [ "</span>
-<a class="jxr_linenumber" name="206" href="#206">206</a>                                 + scriptContext.toString() + <span class="jxr_string">" ]"</span>);
-<a class="jxr_linenumber" name="207" href="#207">207</a>                         ScriptManager.getInstance().runScript(scriptContext);
-<a class="jxr_linenumber" name="208" href="#208">208</a> 
-<a class="jxr_linenumber" name="209" href="#209">209</a>                         <strong class="jxr_keyword">if</strong> (scriptContext.getExitCode() == 0) {
-<a class="jxr_linenumber" name="210" href="#210">210</a>                             LOG.info(<span class="jxr_string">"DcsServer ["</span> + hostName + <span class="jxr_string">":"</span> + instance
-<a class="jxr_linenumber" name="211" href="#211">211</a>                                     + <span class="jxr_string">"] restarted"</span>);
-<a class="jxr_linenumber" name="212" href="#212">212</a>                             <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="213" href="#213">213</a>                         } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="214" href="#214">214</a>                             StringBuilder sb = <strong class="jxr_keyword">new</strong> StringBuilder();
-<a class="jxr_linenumber" name="215" href="#215">215</a>                             sb.append(<span class="jxr_string">"exit code ["</span>
-<a class="jxr_linenumber" name="216" href="#216">216</a>                                     + scriptContext.getExitCode() + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="217" href="#217">217</a>                             <strong class="jxr_keyword">if</strong> (!scriptContext.getStdOut().toString().isEmpty())
-<a class="jxr_linenumber" name="218" href="#218">218</a>                                 sb.append(<span class="jxr_string">", stdout ["</span>
-<a class="jxr_linenumber" name="219" href="#219">219</a>                                         + scriptContext.getStdOut().toString()
-<a class="jxr_linenumber" name="220" href="#220">220</a>                                         + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="221" href="#221">221</a>                             <strong class="jxr_keyword">if</strong> (!scriptContext.getStdErr().toString().isEmpty())
-<a class="jxr_linenumber" name="222" href="#222">222</a>                                 sb.append(<span class="jxr_string">", stderr ["</span>
-<a class="jxr_linenumber" name="223" href="#223">223</a>                                         + scriptContext.getStdErr().toString()
-<a class="jxr_linenumber" name="224" href="#224">224</a>                                         + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="225" href="#225">225</a>                             <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="226" href="#226">226</a>                                 LOG.error(sb.toString());
-<a class="jxr_linenumber" name="227" href="#227">227</a> 
-<a class="jxr_linenumber" name="228" href="#228">228</a>                             <strong class="jxr_keyword">if</strong> (!retryCounter.shouldRetry()) {
-<a class="jxr_linenumber" name="229" href="#229">229</a>                                 <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="230" href="#230">230</a>                                     LOG.error(<span class="jxr_string">"DcsServer ["</span> + hostName + <span class="jxr_string">":"</span>
-<a class="jxr_linenumber" name="231" href="#231">231</a>                                             + instance
-<a class="jxr_linenumber" name="232" href="#232">232</a>                                             + <span class="jxr_string">"] restart failed after "</span>
-<a class="jxr_linenumber" name="233" href="#233">233</a>                                             + retryCounter.getMaxRetries()
-<a class="jxr_linenumber" name="234" href="#234">234</a>                                             + <span class="jxr_string">" retries"</span>);
-<a class="jxr_linenumber" name="235" href="#235">235</a>                                 <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="236" href="#236">236</a>                             } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="237" href="#237">237</a>                                 retryCounter.sleepUntilNextRetry();
-<a class="jxr_linenumber" name="238" href="#238">238</a>                                 retryCounter.useRetry();
-<a class="jxr_linenumber" name="239" href="#239">239</a>                             }
-<a class="jxr_linenumber" name="240" href="#240">240</a>                         }
-<a class="jxr_linenumber" name="241" href="#241">241</a>                     }
-<a class="jxr_linenumber" name="242" href="#242">242</a>                 } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="243" href="#243">243</a>                     StringBuffer sb = <strong class="jxr_keyword">new</strong> StringBuffer();
-<a class="jxr_linenumber" name="244" href="#244">244</a>                     sb.append(<span class="jxr_string">"No restart for "</span>).append(znodePath).append(System.getProperty(<span class="jxr_string">"line.separator"</span>));
-<a class="jxr_linenumber" name="245" href="#245">245</a>                     sb.append(<span class="jxr_string">"DCS Master isFollower ["</span>).append(master.isFollower()).append(<span class="jxr_string">"], "</span>);
-<a class="jxr_linenumber" name="246" href="#246">246</a>                     sb.append(<span class="jxr_string">"DCS Master start time ["</span>)
-<a class="jxr_linenumber" name="247" href="#247">247</a>                             .append(DateFormat.getDateTimeInstance().format(<strong class="jxr_keyword">new</strong> Date(startupTimestamp))).append(<span class="jxr_string">"], "</span>);
-<a class="jxr_linenumber" name="248" href="#248">248</a>                     sb.append(<span class="jxr_string">"DCS Server start time ["</span>)
-<a class="jxr_linenumber" name="249" href="#249">249</a>                             .append(DateFormat.getDateTimeInstance().format(<strong class="jxr_keyword">new</strong> Date(serverStartTimestamp))).append(<span class="jxr_string">"], "</span>);
-<a class="jxr_linenumber" name="250" href="#250">250</a>                     sb.append(<span class="jxr_string">"running DCS Server num is ["</span>).append(runningServers.size())
-<a class="jxr_linenumber" name="251" href="#251">251</a>                             .append(<span class="jxr_string">"], registered DCS Server num is ["</span>).append(registeredServers.size()).append(<span class="jxr_string">"]."</span>);
-<a class="jxr_linenumber" name="252" href="#252">252</a> 
-<a class="jxr_linenumber" name="253" href="#253">253</a>                     LOG.info(sb.toString());
-<a class="jxr_linenumber" name="254" href="#254">254</a>                 }
-<a class="jxr_linenumber" name="255" href="#255">255</a>             } <strong class="jxr_keyword">catch</strong> (Exception e) {
-<a class="jxr_linenumber" name="256" href="#256">256</a>                 e.printStackTrace();
-<a class="jxr_linenumber" name="257" href="#257">257</a>                 <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="258" href="#258">258</a>                     LOG.error(e);
-<a class="jxr_linenumber" name="259" href="#259">259</a>             }
-<a class="jxr_linenumber" name="260" href="#260">260</a> 
-<a class="jxr_linenumber" name="261" href="#261">261</a>             <strong class="jxr_keyword">return</strong> scriptContext;
-<a class="jxr_linenumber" name="262" href="#262">262</a>         }
-<a class="jxr_linenumber" name="263" href="#263">263</a>     }
-<a class="jxr_linenumber" name="264" href="#264">264</a> 
-<a class="jxr_linenumber" name="265" href="#265">265</a>     <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RunningWatcher</a> <strong class="jxr_keyword">implements</strong> Watcher {
-<a class="jxr_linenumber" name="266" href="#266">266</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> process(WatchedEvent event) {
-<a class="jxr_linenumber" name="267" href="#267">267</a>             <strong class="jxr_keyword">if</strong> (event.getType() == Event.EventType.NodeChildrenChanged) {
-<a class="jxr_linenumber" name="268" href="#268">268</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
-<a class="jxr_linenumber" name="269" href="#269">269</a>                     LOG.debug(<span class="jxr_string">"Running children changed ["</span> + event.getPath()
-<a class="jxr_linenumber" name="270" href="#270">270</a>                             + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="271" href="#271">271</a>                 <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="272" href="#272">272</a>                     getZkRunning();
-<a class="jxr_linenumber" name="273" href="#273">273</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
-<a class="jxr_linenumber" name="274" href="#274">274</a>                     e.printStackTrace();
-<a class="jxr_linenumber" name="275" href="#275">275</a>                     <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="276" href="#276">276</a>                         LOG.error(e);
-<a class="jxr_linenumber" name="277" href="#277">277</a>                 }
-<a class="jxr_linenumber" name="278" href="#278">278</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (event.getType() == Event.EventType.NodeDeleted) {
-<a class="jxr_linenumber" name="279" href="#279">279</a>                 String znodePath = event.getPath();
-<a class="jxr_linenumber" name="280" href="#280">280</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
-<a class="jxr_linenumber" name="281" href="#281">281</a>                     LOG.debug(<span class="jxr_string">"Running znode deleted ["</span> + znodePath + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="282" href="#282">282</a>                 <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="283" href="#283">283</a>                     restartServer(znodePath);
-<a class="jxr_linenumber" name="284" href="#284">284</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
-<a class="jxr_linenumber" name="285" href="#285">285</a>                     e.printStackTrace();
-<a class="jxr_linenumber" name="286" href="#286">286</a>                     <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="287" href="#287">287</a>                         LOG.error(e);
-<a class="jxr_linenumber" name="288" href="#288">288</a>                 }
-<a class="jxr_linenumber" name="289" href="#289">289</a>             }
-<a class="jxr_linenumber" name="290" href="#290">290</a>         }
-<a class="jxr_linenumber" name="291" href="#291">291</a>     }
-<a class="jxr_linenumber" name="292" href="#292">292</a> 
-<a class="jxr_linenumber" name="293" href="#293">293</a>     <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RegisteredWatcher</a> <strong class="jxr_keyword">implements</strong> Watcher {
-<a class="jxr_linenumber" name="294" href="#294">294</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> process(WatchedEvent event) {
-<a class="jxr_linenumber" name="295" href="#295">295</a>             <strong class="jxr_keyword">if</strong> (event.getType() == Event.EventType.NodeChildrenChanged) {
-<a class="jxr_linenumber" name="296" href="#296">296</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
-<a class="jxr_linenumber" name="297" href="#297">297</a>                     LOG.debug(<span class="jxr_string">"Registered children changed ["</span> + event.getPath()
-<a class="jxr_linenumber" name="298" href="#298">298</a>                             + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="299" href="#299">299</a>                 <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="300" href="#300">300</a>                     getZkRegistered();
-<a class="jxr_linenumber" name="301" href="#301">301</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
-<a class="jxr_linenumber" name="302" href="#302">302</a>                     e.printStackTrace();
-<a class="jxr_linenumber" name="303" href="#303">303</a>                     <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="304" href="#304">304</a>                         LOG.error(e);
-<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>     }
-<a class="jxr_linenumber" name="309" href="#309">309</a> 
-<a class="jxr_linenumber" name="310" href="#310">310</a>     @Override
-<a class="jxr_linenumber" name="311" href="#311">311</a>     <strong class="jxr_keyword">public</strong> Boolean call() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="312" href="#312">312</a> 
-<a class="jxr_linenumber" name="313" href="#313">313</a>         <strong class="jxr_keyword">long</strong> timeoutMillis = 5000;
+<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
+<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.io.InputStream;
+<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> java.io.InputStreamReader;
+<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> java.io.BufferedReader;
+<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> java.io.FileReader;
+<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> java.io.FileNotFoundException;
+<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> java.util.Scanner;
+<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.util.Collections;
+<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
+<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> java.util.LinkedList;
+<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.util.Queue;
+<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.util.List;
+<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
+<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Callable;
+<a class="jxr_linenumber" name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Executors;
+<a class="jxr_linenumber" name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ExecutorService;
+<a class="jxr_linenumber" name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.Future;
+<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ExecutionException;
+<a class="jxr_linenumber" name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
+<a class="jxr_linenumber" name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> java.util.Comparator;
+<a class="jxr_linenumber" name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
+<a class="jxr_linenumber" name="47" href="#47">47</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
+<a class="jxr_linenumber" name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> java.text.DateFormat;
+<a class="jxr_linenumber" name="49" href="#49">49</a>  
+<a class="jxr_linenumber" name="50" href="#50">50</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.*;
+<a class="jxr_linenumber" name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> org.apache.zookeeper.data.Stat;
+<a class="jxr_linenumber" name="52" href="#52">52</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
+<a class="jxr_linenumber" name="53" href="#53">53</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
+<a class="jxr_linenumber" name="54" href="#54">54</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
+<a class="jxr_linenumber" name="55" href="#55">55</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.master.RunningServer;
+<a class="jxr_linenumber" name="56" href="#56">56</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.master.RegisteredServer;
+<a class="jxr_linenumber" name="57" href="#57">57</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.master.Metrics;
+<a class="jxr_linenumber" name="58" href="#58">58</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.script.ScriptManager;
+<a class="jxr_linenumber" name="59" href="#59">59</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.script.ScriptContext;
+<a class="jxr_linenumber" name="60" href="#60">60</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.Constants;
+<a class="jxr_linenumber" name="61" href="#61">61</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.zookeeper.ZkClient;
+<a class="jxr_linenumber" name="62" href="#62">62</a>  <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.*;
+<a class="jxr_linenumber" name="63" href="#63">63</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jettison.json.JSONArray;
+<a class="jxr_linenumber" name="64" href="#64">64</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jettison.json.JSONException;
+<a class="jxr_linenumber" name="65" href="#65">65</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jettison.json.JSONObject;
+<a class="jxr_linenumber" name="66" href="#66">66</a>  
+<a class="jxr_linenumber" name="67" href="#67">67</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">ServerManager</a> <strong class="jxr_keyword">implements</strong> Callable {
+<a class="jxr_linenumber" name="68" href="#68">68</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(ServerManager.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="69" href="#69">69</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/master/DcsMaster.html">DcsMaster</a> master;
+<a class="jxr_linenumber" name="70" href="#70">70</a>      <strong class="jxr_keyword">private</strong> Configuration conf;
+<a class="jxr_linenumber" name="71" href="#71">71</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/DcsNetworkConfiguration.html">DcsNetworkConfiguration</a> netConf;
+<a class="jxr_linenumber" name="72" href="#72">72</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a> zkc = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="73" href="#73">73</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> startupTimestamp;
+<a class="jxr_linenumber" name="74" href="#74">74</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> maxRestartAttempts;
+<a class="jxr_linenumber" name="75" href="#75">75</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> retryIntervalMillis;
+<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">private</strong> ExecutorService pool = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="77" href="#77">77</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/master/Metrics.html">Metrics</a> metrics;
+<a class="jxr_linenumber" name="78" href="#78">78</a>      <strong class="jxr_keyword">private</strong> String parentZnode;
+<a class="jxr_linenumber" name="79" href="#79">79</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a> retryCounterFactory;
+<a class="jxr_linenumber" name="80" href="#80">80</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;String&gt; configuredServers = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
+<a class="jxr_linenumber" name="81" href="#81">81</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map&lt;String, ServerPortMap&gt; serverPortMap = <strong class="jxr_keyword">new</strong> HashMap&lt;String, ServerPortMap&gt;();
+<a class="jxr_linenumber" name="82" href="#82">82</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;String&gt; runningServers = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
+<a class="jxr_linenumber" name="83" href="#83">83</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;String&gt; registeredServers = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
+<a class="jxr_linenumber" name="84" href="#84">84</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Queue&lt;RestartHandler&gt; restartQueue = <strong class="jxr_keyword">new</strong> LinkedList&lt;RestartHandler&gt;();
+<a class="jxr_linenumber" name="85" href="#85">85</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ArrayList&lt;ServerItem&gt; serverItemList = <strong class="jxr_keyword">new</strong> ArrayList&lt;ServerItem&gt;();
+<a class="jxr_linenumber" name="86" href="#86">86</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> trafodionQueryToolsEnabled;
+<a class="jxr_linenumber" name="87" href="#87">87</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/util/JdbcT4Util.html">JdbcT4Util</a> jdbcT4Util = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="88" href="#88">88</a>  
+<a class="jxr_linenumber" name="89" href="#89">89</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">ServerManager</a>(<a href="../../../../org/trafodion/dcs/master/DcsMaster.html">DcsMaster</a> master, Configuration conf, <a href="../../../../org/trafodion/dcs/zookeeper/ZkClient.html">ZkClient</a> zkc,
+<a class="jxr_linenumber" name="90" href="#90">90</a>              <a href="../../../../org/trafodion/dcs/util/DcsNetworkConfiguration.html">DcsNetworkConfiguration</a> netConf, <strong class="jxr_keyword">long</strong> startupTimestamp,
+<a class="jxr_linenumber" name="91" href="#91">91</a>              <a href="../../../../org/trafodion/dcs/master/Metrics.html">Metrics</a> metrics) <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="92" href="#92">92</a>          <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="93" href="#93">93</a>              <strong class="jxr_keyword">this</strong>.master = master;
+<a class="jxr_linenumber" name="94" href="#94">94</a>              <strong class="jxr_keyword">this</strong>.conf = conf;
+<a class="jxr_linenumber" name="95" href="#95">95</a>              <strong class="jxr_keyword">this</strong>.zkc = zkc;
+<a class="jxr_linenumber" name="96" href="#96">96</a>              <strong class="jxr_keyword">this</strong>.netConf = netConf;
+<a class="jxr_linenumber" name="97" href="#97">97</a>              <strong class="jxr_keyword">this</strong>.startupTimestamp = startupTimestamp;
+<a class="jxr_linenumber" name="98" href="#98">98</a>              <strong class="jxr_keyword">this</strong>.metrics = metrics;
+<a class="jxr_linenumber" name="99" href="#99">99</a>              maxRestartAttempts = conf
+<a class="jxr_linenumber" name="100" href="#100">100</a>                     .getInt(Constants.DCS_MASTER_SERVER_RESTART_HANDLER_ATTEMPTS,
+<a class="jxr_linenumber" name="101" href="#101">101</a>                             Constants.DEFAULT_DCS_MASTER_SERVER_RESTART_HANDLER_ATTEMPTS);
+<a class="jxr_linenumber" name="102" href="#102">102</a>             retryIntervalMillis = conf
+<a class="jxr_linenumber" name="103" href="#103">103</a>                     .getInt(Constants.DCS_MASTER_SERVER_RESTART_HANDLER_RETRY_INTERVAL_MILLIS,
+<a class="jxr_linenumber" name="104" href="#104">104</a>                             Constants.DEFAULT_DCS_MASTER_SERVER_RESTART_HANDLER_RETRY_INTERVAL_MILLIS);
+<a class="jxr_linenumber" name="105" href="#105">105</a>             trafodionQueryToolsEnabled = conf.getBoolean(
+<a class="jxr_linenumber" name="106" href="#106">106</a>                     Constants.DCS_MASTER_TRAFODION_QUERY_TOOLS,
+<a class="jxr_linenumber" name="107" href="#107">107</a>                     Constants.DEFAULT_DCS_MASTER_TRAFODION_QUERY_TOOLS);
+<a class="jxr_linenumber" name="108" href="#108">108</a>             <strong class="jxr_keyword">if</strong> (trafodionQueryToolsEnabled)
+<a class="jxr_linenumber" name="109" href="#109">109</a>                 jdbcT4Util = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/util/JdbcT4Util.html">JdbcT4Util</a>(conf, netConf);
+<a class="jxr_linenumber" name="110" href="#110">110</a>             retryCounterFactory = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/util/RetryCounterFactory.html">RetryCounterFactory</a>(maxRestartAttempts,
+<a class="jxr_linenumber" name="111" href="#111">111</a>                     retryIntervalMillis);
+<a class="jxr_linenumber" name="112" href="#112">112</a>             parentZnode = conf.get(Constants.ZOOKEEPER_ZNODE_PARENT,
+<a class="jxr_linenumber" name="113" href="#113">113</a>                     Constants.DEFAULT_ZOOKEEPER_ZNODE_PARENT);
+<a class="jxr_linenumber" name="114" href="#114">114</a>             pool = Executors.newSingleThreadExecutor();
+<a class="jxr_linenumber" name="115" href="#115">115</a>         } <strong class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="116" href="#116">116</a>             e.printStackTrace();
+<a class="jxr_linenumber" name="117" href="#117">117</a>             <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="118" href="#118">118</a>                 LOG.error(e);
+<a class="jxr_linenumber" name="119" href="#119">119</a>             <strong class="jxr_keyword">throw</strong> e;
+<a class="jxr_linenumber" name="120" href="#120">120</a>         }
+<a class="jxr_linenumber" name="121" href="#121">121</a>     }
+<a class="jxr_linenumber" name="122" href="#122">122</a> 
+<a class="jxr_linenumber" name="123" href="#123">123</a>     <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RestartHandler</a> <strong class="jxr_keyword">implements</strong> Callable&lt;ScriptContext&gt; {
+<a class="jxr_linenumber" name="124" href="#124">124</a>         <strong class="jxr_keyword">private</strong> <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> scriptContext = <strong class="jxr_keyword">new</strong> <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a>();
+<a class="jxr_linenumber" name="125" href="#125">125</a>         <strong class="jxr_keyword">private</strong> String znodePath;
+<a class="jxr_linenumber" name="126" href="#126">126</a>         <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> childCount;
+<a class="jxr_linenumber" name="127" href="#127">127</a> 
+<a class="jxr_linenumber" name="128" href="#128">128</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RestartHandler</a>(String znodePath, <strong class="jxr_keyword">int</strong> childCount) {
+<a class="jxr_linenumber" name="129" href="#129">129</a>             <strong class="jxr_keyword">this</strong>.znodePath = znodePath;
+<a class="jxr_linenumber" name="130" href="#130">130</a>             <strong class="jxr_keyword">this</strong>.childCount = childCount;
+<a class="jxr_linenumber" name="131" href="#131">131</a>         }
+<a class="jxr_linenumber" name="132" href="#132">132</a> 
+<a class="jxr_linenumber" name="133" href="#133">133</a>         @Override
+<a class="jxr_linenumber" name="134" href="#134">134</a>         <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> call() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="135" href="#135">135</a>             <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="136" href="#136">136</a>                 Scanner scn = <strong class="jxr_keyword">new</strong> Scanner(znodePath);
+<a class="jxr_linenumber" name="137" href="#137">137</a>                 scn.useDelimiter(<span class="jxr_string">":"</span>);
+<a class="jxr_linenumber" name="138" href="#138">138</a>                 String hostName = scn.next();<em class="jxr_comment">// host name</em>
+<a class="jxr_linenumber" name="139" href="#139">139</a>                 String instance = scn.next();<em class="jxr_comment">// instance</em>
+<a class="jxr_linenumber" name="140" href="#140">140</a>                 <strong class="jxr_keyword">int</strong> infoPort = Integer.parseInt(scn.next()); <em class="jxr_comment">// UI port</em>
+<a class="jxr_linenumber" name="141" href="#141">141</a>                 <strong class="jxr_keyword">long</strong> serverStartTimestamp = Long.parseLong(scn.next());
+<a class="jxr_linenumber" name="142" href="#142">142</a>                 scn.close();
+<a class="jxr_linenumber" name="143" href="#143">143</a> 
+<a class="jxr_linenumber" name="144" href="#144">144</a>                 <em class="jxr_comment">// Get the --config property from classpath...it's always first</em>
+<a class="jxr_linenumber" name="145" href="#145">145</a>                 <em class="jxr_comment">// in the classpath</em>
+<a class="jxr_linenumber" name="146" href="#146">146</a>                 String cp = System.getProperty(<span class="jxr_string">"java.class.path"</span>);
+<a class="jxr_linenumber" name="147" href="#147">147</a>                 scn = <strong class="jxr_keyword">new</strong> Scanner(cp);
+<a class="jxr_linenumber" name="148" href="#148">148</a>                 scn.useDelimiter(<span class="jxr_string">":"</span>);
+<a class="jxr_linenumber" name="149" href="#149">149</a>                 String confDir = scn.next();
+<a class="jxr_linenumber" name="150" href="#150">150</a>                 scn.close();
+<a class="jxr_linenumber" name="151" href="#151">151</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
+<a class="jxr_linenumber" name="152" href="#152">152</a>                     LOG.debug(<span class="jxr_string">"conf dir ["</span> + confDir + <span class="jxr_string">"]"</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">// Get -Ddcs.home.dir</em>
+<a class="jxr_linenumber" name="155" href="#155">155</a>                 String dcsHome = System.getProperty(<span class="jxr_string">"dcs.home.dir"</span>);
+<a class="jxr_linenumber" name="156" href="#156">156</a> 
+<a class="jxr_linenumber" name="157" href="#157">157</a>                 <em class="jxr_comment">// If stop-dcs.sh is executed and DCS_MANAGES_ZK then zookeeper</em>
+<a class="jxr_linenumber" name="158" href="#158">158</a>                 <em class="jxr_comment">// is stopped abruptly.</em>
+<a class="jxr_linenumber" name="159" href="#159">159</a>                 <em class="jxr_comment">// Second scenario is when ZooKeeper fails for some reason</em>
+<a class="jxr_linenumber" name="160" href="#160">160</a>                 <em class="jxr_comment">// regardless of whether DCS</em>
+<a class="jxr_linenumber" name="161" href="#161">161</a>                 <em class="jxr_comment">// manages it. When either happens the DcsServer running znodes</em>
+<a class="jxr_linenumber" name="162" href="#162">162</a>                 <em class="jxr_comment">// still exist in ZooKeeper</em>
+<a class="jxr_linenumber" name="163" href="#163">163</a>                 <em class="jxr_comment">// and we see them at next startup. When they eventually timeout</em>
+<a class="jxr_linenumber" name="164" href="#164">164</a>                 <em class="jxr_comment">// we get node deleted events for a server that no longer</em>
+<a class="jxr_linenumber" name="165" href="#165">165</a>                 <em class="jxr_comment">// exists. So, only recognize</em>
+<a class="jxr_linenumber" name="166" href="#166">166</a>                 <em class="jxr_comment">// DcsServer running znodes that have timestamps after last</em>
+<a class="jxr_linenumber" name="167" href="#167">167</a>                 <em class="jxr_comment">// DcsMaster startup.</em>
+<a class="jxr_linenumber" name="168" href="#168">168</a>                 <em class="jxr_comment">//</em>
+<a class="jxr_linenumber" name="169" href="#169">169</a>                 <em class="jxr_comment">// But, if we are DcsMaster follower that is taking over from</em>
+<a class="jxr_linenumber" name="170" href="#170">170</a>                 <em class="jxr_comment">// failed one then ignore timestamp issues described above.</em>
+<a class="jxr_linenumber" name="171" href="#171">171</a>                 <em class="jxr_comment">// See MasterLeaderElection.elect()</em>
+<a class="jxr_linenumber" name="172" href="#172">172</a>                 <strong class="jxr_keyword">if</strong> ((master.isFollower() == false &amp;&amp; serverStartTimestamp &gt; startupTimestamp)
+<a class="jxr_linenumber" name="173" href="#173">173</a>                         || (master.isFollower() &amp;&amp; runningServers.size() &lt; configuredServers.size())) {
+<a class="jxr_linenumber" name="174" href="#174">174</a>                     scriptContext.setHostName(hostName);
+<a class="jxr_linenumber" name="175" href="#175">175</a>                     scriptContext
+<a class="jxr_linenumber" name="176" href="#176">176</a>                             .setScriptName(Constants.SYS_SHELL_SCRIPT_NAME);
+<a class="jxr_linenumber" name="177" href="#177">177</a> 
+<a class="jxr_linenumber" name="178" href="#178">178</a>                     <strong class="jxr_keyword">if</strong> (hostName.equalsIgnoreCase(netConf.getHostName()))
+<a class="jxr_linenumber" name="179" href="#179">179</a>                         scriptContext.setCommand(<span class="jxr_string">"bin/dcs-daemon.sh --config "</span>
+<a class="jxr_linenumber" name="180" href="#180">180</a>                                 + confDir + <span class="jxr_string">" start server "</span> + instance + <span class="jxr_string">" "</span>
+<a class="jxr_linenumber" name="181" href="#181">181</a>                                 + childCount);
+<a class="jxr_linenumber" name="182" href="#182">182</a>                     <strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="183" href="#183">183</a>                         scriptContext.setCommand(<span class="jxr_string">"pdsh -w "</span> + hostName
+<a class="jxr_linenumber" name="184" href="#184">184</a>                                 + <span class="jxr_string">" \&quot;cd "</span> + dcsHome
+<a class="jxr_linenumber" name="185" href="#185">185</a>                                 + <span class="jxr_string">";bin/dcs-daemon.sh --config "</span> + confDir
+<a class="jxr_linenumber" name="186" href="#186">186</a>                                 + <span class="jxr_string">" start server "</span> + instance + <span class="jxr_string">" "</span>
+<a class="jxr_linenumber" name="187" href="#187">187</a>                                 + childCount + <span class="jxr_string">"\&quot;"</span>);
+<a class="jxr_linenumber" name="188" href="#188">188</a> 
+<a class="jxr_linenumber" name="189" href="#189">189</a>                     <a href="../../../../org/trafodion/dcs/util/RetryCounter.html">RetryCounter</a> retryCounter = retryCounterFactory.create();
+<a class="jxr_linenumber" name="190" href="#190">190</a>                     <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
+<a class="jxr_linenumber" name="191" href="#191">191</a>                         <strong class="jxr_keyword">if</strong> (scriptContext.getStdOut().length() &gt; 0)
+<a class="jxr_linenumber" name="192" href="#192">192</a>                             scriptContext.getStdOut().delete(0,
+<a class="jxr_linenumber" name="193" href="#193">193</a>                                     scriptContext.getStdOut().length());
+<a class="jxr_linenumber" name="194" href="#194">194</a>                         <strong class="jxr_keyword">if</strong> (scriptContext.getStdErr().length() &gt; 0)
+<a class="jxr_linenumber" name="195" href="#195">195</a>                             scriptContext.getStdErr().delete(0,
+<a class="jxr_linenumber" name="196" href="#196">196</a>                                     scriptContext.getStdErr().length());
+<a class="jxr_linenumber" name="197" href="#197">197</a>                         LOG.info(<span class="jxr_string">"Restarting DcsServer ["</span> + hostName + <span class="jxr_string">":"</span>
+<a class="jxr_linenumber" name="198" href="#198">198</a>                                 + instance + <span class="jxr_string">"], script [ "</span>
+<a class="jxr_linenumber" name="199" href="#199">199</a>                                 + scriptContext.toString() + <span class="jxr_string">" ]"</span>);
+<a class="jxr_linenumber" name="200" href="#200">200</a>                         ScriptManager.getInstance().runScript(scriptContext);
+<a class="jxr_linenumber" name="201" href="#201">201</a> 
+<a class="jxr_linenumber" name="202" href="#202">202</a>                         <strong class="jxr_keyword">if</strong> (scriptContext.getExitCode() == 0) {
+<a class="jxr_linenumber" name="203" href="#203">203</a>                             LOG.info(<span class="jxr_string">"DcsServer ["</span> + hostName + <span class="jxr_string">":"</span> + instance
+<a class="jxr_linenumber" name="204" href="#204">204</a>                                     + <span class="jxr_string">"] restarted"</span>);
+<a class="jxr_linenumber" name="205" href="#205">205</a>                             <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="206" href="#206">206</a>                         } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="207" href="#207">207</a>                             StringBuilder sb = <strong class="jxr_keyword">new</strong> StringBuilder();
+<a class="jxr_linenumber" name="208" href="#208">208</a>                             sb.append(<span class="jxr_string">"exit code ["</span>
+<a class="jxr_linenumber" name="209" href="#209">209</a>                                     + scriptContext.getExitCode() + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="210" href="#210">210</a>                             <strong class="jxr_keyword">if</strong> (!scriptContext.getStdOut().toString().isEmpty())
+<a class="jxr_linenumber" name="211" href="#211">211</a>                                 sb.append(<span class="jxr_string">", stdout ["</span>
+<a class="jxr_linenumber" name="212" href="#212">212</a>                                         + scriptContext.getStdOut().toString()
+<a class="jxr_linenumber" name="213" href="#213">213</a>                                         + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="214" href="#214">214</a>                             <strong class="jxr_keyword">if</strong> (!scriptContext.getStdErr().toString().isEmpty())
+<a class="jxr_linenumber" name="215" href="#215">215</a>                                 sb.append(<span class="jxr_string">", stderr ["</span>
+<a class="jxr_linenumber" name="216" href="#216">216</a>                                         + scriptContext.getStdErr().toString()
+<a class="jxr_linenumber" name="217" href="#217">217</a>                                         + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="218" href="#218">218</a>                             <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="219" href="#219">219</a>                                 LOG.error(sb.toString());
+<a class="jxr_linenumber" name="220" href="#220">220</a> 
+<a class="jxr_linenumber" name="221" href="#221">221</a>                             <strong class="jxr_keyword">if</strong> (!retryCounter.shouldRetry()) {
+<a class="jxr_linenumber" name="222" href="#222">222</a>                                 <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="223" href="#223">223</a>                                     LOG.error(<span class="jxr_string">"DcsServer ["</span> + hostName + <span class="jxr_string">":"</span>
+<a class="jxr_linenumber" name="224" href="#224">224</a>                                             + instance
+<a class="jxr_linenumber" name="225" href="#225">225</a>                                             + <span class="jxr_string">"] restart failed after "</span>
+<a class="jxr_linenumber" name="226" href="#226">226</a>                                             + retryCounter.getMaxRetries()
+<a class="jxr_linenumber" name="227" href="#227">227</a>                                             + <span class="jxr_string">" retries"</span>);
+<a class="jxr_linenumber" name="228" href="#228">228</a>                                 <strong class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="229" href="#229">229</a>                             } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="230" href="#230">230</a>                                 retryCounter.sleepUntilNextRetry();
+<a class="jxr_linenumber" name="231" href="#231">231</a>                                 retryCounter.useRetry();
+<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>                     }
+<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>                     StringBuffer sb = <strong class="jxr_keyword">new</strong> StringBuffer();
+<a class="jxr_linenumber" name="237" href="#237">237</a>                     sb.append(<span class="jxr_string">"No restart for "</span>).append(znodePath).append(System.getProperty(<span class="jxr_string">"line.separator"</span>));
+<a class="jxr_linenumber" name="238" href="#238">238</a>                     sb.append(<span class="jxr_string">"DCS Master isFollower ["</span>).append(master.isFollower()).append(<span class="jxr_string">"], "</span>);
+<a class="jxr_linenumber" name="239" href="#239">239</a>                     sb.append(<span class="jxr_string">"DCS Master start time ["</span>)
+<a class="jxr_linenumber" name="240" href="#240">240</a>                             .append(DateFormat.getDateTimeInstance().format(<strong class="jxr_keyword">new</strong> Date(startupTimestamp))).append(<span class="jxr_string">"], "</span>);
+<a class="jxr_linenumber" name="241" href="#241">241</a>                     sb.append(<span class="jxr_string">"DCS Server start time ["</span>)
+<a class="jxr_linenumber" name="242" href="#242">242</a>                             .append(DateFormat.getDateTimeInstance().format(<strong class="jxr_keyword">new</strong> Date(serverStartTimestamp))).append(<span class="jxr_string">"], "</span>);
+<a class="jxr_linenumber" name="243" href="#243">243</a>                     sb.append(<span class="jxr_string">"running DCS Server num is ["</span>).append(runningServers.size())
+<a class="jxr_linenumber" name="244" href="#244">244</a>                             .append(<span class="jxr_string">"], registered DCS Server num is ["</span>).append(registeredServers.size()).append(<span class="jxr_string">"]."</span>);
+<a class="jxr_linenumber" name="245" href="#245">245</a> 
+<a class="jxr_linenumber" name="246" href="#246">246</a>                     LOG.info(sb.toString());
+<a class="jxr_linenumber" name="247" href="#247">247</a>                 }
+<a class="jxr_linenumber" name="248" href="#248">248</a>             } <strong class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="249" href="#249">249</a>                 e.printStackTrace();
+<a class="jxr_linenumber" name="250" href="#250">250</a>                 <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="251" href="#251">251</a>                     LOG.error(e);
+<a class="jxr_linenumber" name="252" href="#252">252</a>             }
+<a class="jxr_linenumber" name="253" href="#253">253</a> 
+<a class="jxr_linenumber" name="254" href="#254">254</a>             <strong class="jxr_keyword">return</strong> scriptContext;
+<a class="jxr_linenumber" name="255" href="#255">255</a>         }
+<a class="jxr_linenumber" name="256" href="#256">256</a>     }
+<a class="jxr_linenumber" name="257" href="#257">257</a> 
+<a class="jxr_linenumber" name="258" href="#258">258</a>     <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RunningWatcher</a> <strong class="jxr_keyword">implements</strong> Watcher {
+<a class="jxr_linenumber" name="259" href="#259">259</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> process(WatchedEvent event) {
+<a class="jxr_linenumber" name="260" href="#260">260</a>             <strong class="jxr_keyword">if</strong> (event.getType() == Event.EventType.NodeChildrenChanged) {
+<a class="jxr_linenumber" name="261" href="#261">261</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
+<a class="jxr_linenumber" name="262" href="#262">262</a>                     LOG.debug(<span class="jxr_string">"Running children changed ["</span> + event.getPath()
+<a class="jxr_linenumber" name="263" href="#263">263</a>                             + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="264" href="#264">264</a>                 <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="265" href="#265">265</a>                     getZkRunning();
+<a class="jxr_linenumber" name="266" href="#266">266</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="267" href="#267">267</a>                     e.printStackTrace();
+<a class="jxr_linenumber" name="268" href="#268">268</a>                     <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="269" href="#269">269</a>                         LOG.error(e);
+<a class="jxr_linenumber" name="270" href="#270">270</a>                 }
+<a class="jxr_linenumber" name="271" href="#271">271</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (event.getType() == Event.EventType.NodeDeleted) {
+<a class="jxr_linenumber" name="272" href="#272">272</a>                 String znodePath = event.getPath();
+<a class="jxr_linenumber" name="273" href="#273">273</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
+<a class="jxr_linenumber" name="274" href="#274">274</a>                     LOG.debug(<span class="jxr_string">"Running znode deleted ["</span> + znodePath + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="275" href="#275">275</a>                 <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="276" href="#276">276</a>                     restartServer(znodePath);
+<a class="jxr_linenumber" name="277" href="#277">277</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="278" href="#278">278</a>                     e.printStackTrace();
+<a class="jxr_linenumber" name="279" href="#279">279</a>                     <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="280" href="#280">280</a>                         LOG.error(e);
+<a class="jxr_linenumber" name="281" href="#281">281</a>                 }
+<a class="jxr_linenumber" name="282" href="#282">282</a>             }
+<a class="jxr_linenumber" name="283" href="#283">283</a>         }
+<a class="jxr_linenumber" name="284" href="#284">284</a>     }
+<a class="jxr_linenumber" name="285" href="#285">285</a> 
+<a class="jxr_linenumber" name="286" href="#286">286</a>     <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RegisteredWatcher</a> <strong class="jxr_keyword">implements</strong> Watcher {
+<a class="jxr_linenumber" name="287" href="#287">287</a>         <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> process(WatchedEvent event) {
+<a class="jxr_linenumber" name="288" href="#288">288</a>             <strong class="jxr_keyword">if</strong> (event.getType() == Event.EventType.NodeChildrenChanged) {
+<a class="jxr_linenumber" name="289" href="#289">289</a>                 <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
+<a class="jxr_linenumber" name="290" href="#290">290</a>                     LOG.debug(<span class="jxr_string">"Registered children changed ["</span> + event.getPath()
+<a class="jxr_linenumber" name="291" href="#291">291</a>                             + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="292" href="#292">292</a>                 <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="293" href="#293">293</a>                     getZkRegistered();
+<a class="jxr_linenumber" name="294" href="#294">294</a>                 } <strong class="jxr_keyword">catch</strong> (Exception e) {
+<a class="jxr_linenumber" name="295" href="#295">295</a>                     e.printStackTrace();
+<a class="jxr_linenumber" name="296" href="#296">296</a>                     <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
+<a class="jxr_linenumber" name="297" href="#297">297</a>                         LOG.error(e);
+<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>         }
+<a class="jxr_linenumber" name="301" href="#301">301</a>     }
+<a class="jxr_linenumber" name="302" href="#302">302</a> 
+<a class="jxr_linenumber" name="303" href="#303">303</a>     @Override
+<a class="jxr_linenumber" name="304" href="#304">304</a>     <strong class="jxr_keyword">public</strong> Boolean call() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="305" href="#305">305</a> 
+<a class="jxr_linenumber" name="306" href="#306">306</a>         <strong class="jxr_keyword">long</strong> timeoutMillis = 5000;
+<a class="jxr_linenumber" name="307" href="#307">307</a> 
+<a class="jxr_linenumber" name="308" href="#308">308</a>         <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="309" href="#309">309</a>             getServersFile();
+<a class="jxr_linenumber" name="310" href="#310">310</a>             createServersPortMap();
+<a class="jxr_linenumber" name="311" href="#311">311</a>             getZkRunning();
+<a class="jxr_linenumber" name="312" href="#312">312</a>             getUnwathedServers();
+<a class="jxr_linenumber" name="313" href="#313">313</a>             getZkRegistered();
 <a class="jxr_linenumber" name="314" href="#314">314</a> 
-<a class="jxr_linenumber" name="315" href="#315">315</a>         <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="316" href="#316">316</a>             getServersFile();
-<a class="jxr_linenumber" name="317" href="#317">317</a>             createServersPortMap();
-<a class="jxr_linenumber" name="318" href="#318">318</a>             getZkRunning();
-<a class="jxr_linenumber" name="319" href="#319">319</a>             getZkRegistered();
-<a class="jxr_linenumber" name="320" href="#320">320</a> 
-<a class="jxr_linenumber" name="321" href="#321">321</a>             <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
-<a class="jxr_linenumber" name="322" href="#322">322</a>                 <strong class="jxr_keyword">while</strong> (!restartQueue.isEmpty()) {
-<a class="jxr_linenumber" name="323" href="#323">323</a>                     <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
-<a class="jxr_linenumber" name="324" href="#324">324</a>                         LOG.debug(<span class="jxr_string">"Restart queue size ["</span> + restartQueue.size()
-<a class="jxr_linenumber" name="325" href="#325">325</a>                                 + <span class="jxr_string">"]"</span>);
-<a class="jxr_linenumber" name="326" href="#326">326</a>                     <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RestartHandler</a> handler = restartQueue.poll();
-<a class="jxr_linenumber" name="327" href="#327">327</a>                     Future&lt;ScriptContext&gt; runner = pool.submit(handler);
-<a class="jxr_linenumber" name="328" href="#328">328</a>                     <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> scriptContext = runner.get();<em class="jxr_comment">// blocking call</em>
-<a class="jxr_linenumber" name="329" href="#329">329</a>                     <strong class="jxr_keyword">if</strong> (scriptContext.getExitCode() != 0)
-<a class="jxr_linenumber" name="330" href="#330">330</a>                         restartQueue.add(handler);
-<a class="jxr_linenumber" name="331" href="#331">331</a>                 }
+<a class="jxr_linenumber" name="315" href="#315">315</a>             <strong class="jxr_keyword">while</strong> (<strong class="jxr_keyword">true</strong>) {
+<a class="jxr_linenumber" name="316" href="#316">316</a>                 <strong class="jxr_keyword">while</strong> (!restartQueue.isEmpty()) {
+<a class="jxr_linenumber" name="317" href="#317">317</a>                     <strong class="jxr_keyword">if</strong> (LOG.isDebugEnabled())
+<a class="jxr_linenumber" name="318" href="#318">318</a>                         LOG.debug(<span class="jxr_string">"Restart queue size ["</span> + restartQueue.size()
+<a class="jxr_linenumber" name="319" href="#319">319</a>                                 + <span class="jxr_string">"]"</span>);
+<a class="jxr_linenumber" name="320" href="#320">320</a>                     <a href="../../../../org/trafodion/dcs/master/ServerManager.html">RestartHandler</a> handler = restartQueue.poll();
+<a class="jxr_linenumber" name="321" href="#321">321</a>                     Future&lt;ScriptContext&gt; runner = pool.submit(handler);
+<a class="jxr_linenumber" name="322" href="#322">322</a>                     <a href="../../../../org/trafodion/dcs/script/ScriptContext.html">ScriptContext</a> scriptContext = runner.get();<em class="jxr_comment">// blocking call</em>
+<a class="jxr_linenumber" name="323" href="#323">323</a>                     <strong class="jxr_keyword">if</strong> (scriptContext.getExitCode() != 0)
+<a class="jxr_linenumber" name="324" href="#324">324</a>                         restartQueue.add(handler);
+<a class="jxr_linenumber" name="325" href="#325">325</a>                 }
+<a class="jxr_linenumber" name="326" href="#326">326</a> 
+<a class="jxr_linenumber" name="327" href="#327">327</a>                 <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="328" href="#328">328</a>                     Thread.sleep(timeoutMillis);
+<a class="jxr_linenumber" name="329" href="#329">329</a>                 } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
+<a class="jxr_linenumber" name="330" href="#330">330</a>                 }
+<a class="jxr_linenumber" name="331" href="#331">331</a>             }
 <a class="jxr_linenumber" name="332" href="#332">332</a> 
-<a class="jxr_linenumber" name="333" href="#333">333</a>                 <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="334" href="#334">334</a>                     Thread.sleep(timeoutMillis);
-<a class="jxr_linenumber" name="335" href="#335">335</a>                 } <strong class="jxr_keyword">catch</strong> (InterruptedException e) {
-<a class="jxr_linenumber" name="336" href="#336">336</a>                 }
-<a class="jxr_linenumber" name="337" href="#337">337</a>             }
-<a class="jxr_linenumber" name="338" href="#338">338</a> 
-<a class="jxr_linenumber" name="339" href="#339">339</a>         } <strong class="jxr_keyword">catch</strong> (Exception e) {
-<a class="jxr_linenumber" name="340" href="#340">340</a>             e.printStackTrace();
-<a class="jxr_linenumber" name="341" href="#341">341</a>             <strong class="jxr_keyword">if</strong> (LOG.isErrorEnabled())
-<a class="jxr_linenumber" name="342" href="#342">342</a>                 LOG.error(e);
-<a class="jxr_linenumber" name="343" href="#343">343</a>             pool.shutdown();
-<a class="jxr_linenumber" name="344" href="#344">344</a>             <strong class="jxr_keyword">throw</strong> e;
-<a class="jxr_linenumber" name="345" href="#345">345</a>         }
-<a class="jxr_linenumber" name="346" href="#346">346</a>     }
-<a class="jxr_linenumber" name="347" href="#347">347</a> 
-<a class="jxr_linenumber" name="348" href="#348">348</a>     <strong class="jxr_keyword">private</strong> List&lt;String&gt; getChildren(String znode, Watcher watcher)
-<a class="jxr_linenumber" name="349" href="#349">349</a>             <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="350" href="#350">350</a>         List&lt;String&gt; children = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="351" href="#351">351</a>         children = zkc.getChildren(znode, watcher);
-<a class="jxr_linenumber" name="352" href="#352">352</a>         <strong class="jxr_keyword">if</strong> (!children.isEmpty())
-<a class="jxr_linenumber" name="353" href="#353">353</a>             Collections.sort(children);
-<a class="jxr_linenumber" name="354" href="#354">354</a>         <strong class="jxr_keyword">return</strong> children;
-<a class="jxr_linenumber" name="355" href="#355">355</a>     }
-<a class="jxr_linenumber" name="356" href="#356">356</a> 
-<a class="jxr_linenumber" name="357" href="#357">357</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> getServersFile() <strong class="jxr_keyword">throws</strong> Exception {
-<a class="jxr_linenumber" name="358" href="#358">358</a>         InputStream is = <strong class="jxr_keyword">this</strong>.getClass().getResourceAsStream(<span class="jxr_string">"/servers"</span>);
-<a class="jxr_linenumber" name="359" href="#359">359</a>         <strong class="jxr_keyword">if</strong> (is == <strong class="jxr_keyword">null</strong>)
-<a class="jxr_linenumber" name="360" href="#360">360</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Cannot find servers file"</span>);
-<a class="jxr_linenumber" name="361" href="#361">361</a> 
-<a class="jxr_linenumber" name="362" href="#362">362</a>         BufferedReader br = <strong class="jxr_keyword">new</strong> BufferedReader(<strong class="jxr_keyword">new</strong> InputStreamReader(is));
-<a class="jxr_linenumber" name="363" href="#363">363</a>         configuredServers.clear();
-<a class="jxr_linenumber" name="364" href="#364">364</a>         String line;
-<a class="jxr_linenumber" name="365" href="#365">365</a>         <strong class="jxr_keyword">int</strong> lineNum = 1;
-<a class="jxr_linenumber" name="366" href="#366">366</a>         <strong class="jxr_keyword">while</strong> ((line = br.readLine()) != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="367" href="#367">367</a>             Scanner scn = <strong class="jxr_keyword">new</strong> Scanner(line);
-<a class="jxr_linenumber" name="368" href="#368">368</a>             scn.useDelimiter(<span class="jxr_string">" "</span>);
-<a class="jxr_linenumber" name="369" href="#369">369</a>             String hostName = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="370" href="#370">370</a>   

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