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From mi...@apache.org
Subject [08/49] hbase-site git commit: Published site at 4b3e38705cb24aee82615b1b9af47ed549ea1358.
Date Thu, 03 Mar 2016 17:16:54 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/4ce8323f/xref/org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html
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diff --git a/xref/org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html b/xref/org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html
index c03fecb..80ee775 100644
--- a/xref/org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html
+++ b/xref/org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html
@@ -31,179 +31,200 @@
 <a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
 <a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.io.InputStream;
 <a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.io.OutputStream;
-<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.Arrays;
-<a class="jxr_linenumber" name="25" href="#25">25</a>  
-<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceAudience;
-<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceStability;
-<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.protobuf.generated.ProcedureProtos.StateMachineProcedureData;
-<a class="jxr_linenumber" name="29" href="#29">29</a>  
-<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * Procedure described by a series of steps.</em>
-<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * The procedure implementor must have an enum of 'states', describing</em>
-<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * the various step of the procedure.</em>
-<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * Once the procedure is running, the procedure-framework will call executeFromState()</em>
-<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * using the 'state' provided by the user. The first call to executeFromState()</em>
-<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * will be performed with 'state = null'. The implementor can jump between</em>
-<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * states using setNextState(MyStateEnum.ordinal()).</em>
-<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * The rollback will call rollbackState() for each state that was executed, in reverse order.</em>
-<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="41" href="#41">41</a>  @InterfaceAudience.Private
-<a class="jxr_linenumber" name="42" href="#42">42</a>  @InterfaceStability.Evolving
-<a class="jxr_linenumber" name="43" href="#43">43</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> StateMachineProcedure&lt;TEnvironment, TState&gt;
-<a class="jxr_linenumber" name="44" href="#44">44</a>      <strong class="jxr_keyword">extends</strong> Procedure&lt;TEnvironment&gt; {
-<a class="jxr_linenumber" name="45" href="#45">45</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> stateCount = 0;
-<a class="jxr_linenumber" name="46" href="#46">46</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong>[] states = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="47" href="#47">47</a>  
-<a class="jxr_linenumber" name="48" href="#48">48</a>    <strong class="jxr_keyword">protected</strong> enum <a href="../../../../../org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html">Flow</a> {
-<a class="jxr_linenumber" name="49" href="#49">49</a>      HAS_MORE_STATE,
-<a class="jxr_linenumber" name="50" href="#50">50</a>      NO_MORE_STATE,
-<a class="jxr_linenumber" name="51" href="#51">51</a>    }
-<a class="jxr_linenumber" name="52" href="#52">52</a>  
-<a class="jxr_linenumber" name="53" href="#53">53</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment">   * called to perform a single step of the specified 'state' of the procedure</em>
-<a class="jxr_linenumber" name="55" href="#55">55</a>  <em class="jxr_javadoccomment">   * @param state state to execute</em>
-<a class="jxr_linenumber" name="56" href="#56">56</a>  <em class="jxr_javadoccomment">   * @return Flow.NO_MORE_STATE if the procedure is completed,</em>
-<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment">   *         Flow.HAS_MORE_STATE if there is another step.</em>
-<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="59" href="#59">59</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <a href="../../../../../org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html">Flow</a> executeFromState(TEnvironment env, TState state)
-<a class="jxr_linenumber" name="60" href="#60">60</a>      <strong class="jxr_keyword">throws</strong> ProcedureYieldException, InterruptedException;
-<a class="jxr_linenumber" name="61" href="#61">61</a>  
-<a class="jxr_linenumber" name="62" href="#62">62</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">   * called to perform the rollback of the specified state</em>
-<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">   * @param state state to rollback</em>
-<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment">   * @throws IOException temporary failure, the rollback will retry later</em>
-<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="67" href="#67">67</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">void</strong> rollbackState(TEnvironment env, TState state)
-<a class="jxr_linenumber" name="68" href="#68">68</a>      <strong class="jxr_keyword">throws</strong> IOException, InterruptedException;
-<a class="jxr_linenumber" name="69" href="#69">69</a>  
-<a class="jxr_linenumber" name="70" href="#70">70</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">   * Convert an ordinal (or state id) to an Enum (or more descriptive) state object.</em>
-<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">   * @param stateId the ordinal() of the state enum (or state id)</em>
-<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">   * @return the state enum object</em>
-<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="75" href="#75">75</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> TState getState(<strong class="jxr_keyword">int</strong> stateId);
-<a class="jxr_linenumber" name="76" href="#76">76</a>  
-<a class="jxr_linenumber" name="77" href="#77">77</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment">   * Convert the Enum (or more descriptive) state object to an ordinal (or state id).</em>
-<a class="jxr_linenumber" name="79" href="#79">79</a>  <em class="jxr_javadoccomment">   * @param state the state enum object</em>
-<a class="jxr_linenumber" name="80" href="#80">80</a>  <em class="jxr_javadoccomment">   * @return stateId the ordinal() of the state enum (or state id)</em>
-<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="82" href="#82">82</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">int</strong> getStateId(TState state);
-<a class="jxr_linenumber" name="83" href="#83">83</a>  
-<a class="jxr_linenumber" name="84" href="#84">84</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment">   * Return the initial state object that will be used for the first call to executeFromState().</em>
-<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">   * @return the initial state enum object</em>
-<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="88" href="#88">88</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> TState getInitialState();
-<a class="jxr_linenumber" name="89" href="#89">89</a>  
-<a class="jxr_linenumber" name="90" href="#90">90</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">   * Set the next state for the procedure.</em>
-<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">   * @param state the state enum object</em>
-<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="94" href="#94">94</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setNextState(<strong class="jxr_keyword">final</strong> TState state) {
-<a class="jxr_linenumber" name="95" href="#95">95</a>      setNextState(getStateId(state));
-<a class="jxr_linenumber" name="96" href="#96">96</a>    }
-<a class="jxr_linenumber" name="97" href="#97">97</a>  
-<a class="jxr_linenumber" name="98" href="#98">98</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="99" href="#99">99</a>  <em class="jxr_javadoccomment">   * By default, the executor will try ro run all the steps of the procedure start to finish.</em>
-<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">   * Return true to make the executor yield between execution steps to</em>
-<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">   * give other procedures time to run their steps.</em>
-<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">   * @param state the state we are going to execute next.</em>
-<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">   * @return Return true if the executor should yield before the execution of the specified step.</em>
-<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">   *         Defaults to return false.</em>
-<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="106" href="#106">106</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> isYieldBeforeExecuteFromState(TEnvironment env, TState state) {
-<a class="jxr_linenumber" name="107" href="#107">107</a>     <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="108" href="#108">108</a>   }
-<a class="jxr_linenumber" name="109" href="#109">109</a> 
-<a class="jxr_linenumber" name="110" href="#110">110</a>   @Override
-<a class="jxr_linenumber" name="111" href="#111">111</a>   <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html">Procedure</a>[] execute(<strong class="jxr_keyword">final</strong> TEnvironment env)
-<a class="jxr_linenumber" name="112" href="#112">112</a>       <strong class="jxr_keyword">throws</strong> ProcedureYieldException, InterruptedException {
-<a class="jxr_linenumber" name="113" href="#113">113</a>     updateTimestamp();
-<a class="jxr_linenumber" name="114" href="#114">114</a>     <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="115" href="#115">115</a>       TState state = getCurrentState();
-<a class="jxr_linenumber" name="116" href="#116">116</a>       <strong class="jxr_keyword">if</strong> (stateCount == 0) {
-<a class="jxr_linenumber" name="117" href="#117">117</a>         setNextState(getStateId(state));
-<a class="jxr_linenumber" name="118" href="#118">118</a>       }
-<a class="jxr_linenumber" name="119" href="#119">119</a>       <strong class="jxr_keyword">if</strong> (executeFromState(env, state) == Flow.NO_MORE_STATE) {
-<a class="jxr_linenumber" name="120" href="#120">120</a>         <em class="jxr_comment">// completed</em>
-<a class="jxr_linenumber" name="121" href="#121">121</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="122" href="#122">122</a>       }
-<a class="jxr_linenumber" name="123" href="#123">123</a>       <strong class="jxr_keyword">return</strong> (isWaiting() || isFailed()) ? <strong class="jxr_keyword">null</strong> : <strong class="jxr_keyword">new</strong> Procedure[] {<strong class="jxr_keyword">this</strong>};
-<a class="jxr_linenumber" name="124" href="#124">124</a>     } <strong class="jxr_keyword">finally</strong> {
-<a class="jxr_linenumber" name="125" href="#125">125</a>       updateTimestamp();
-<a class="jxr_linenumber" name="126" href="#126">126</a>     }
-<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>   @Override
-<a class="jxr_linenumber" name="130" href="#130">130</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> rollback(<strong class="jxr_keyword">final</strong> TEnvironment env)
-<a class="jxr_linenumber" name="131" href="#131">131</a>       <strong class="jxr_keyword">throws</strong> IOException, InterruptedException {
-<a class="jxr_linenumber" name="132" href="#132">132</a>     <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="133" href="#133">133</a>       updateTimestamp();
-<a class="jxr_linenumber" name="134" href="#134">134</a>       rollbackState(env, getCurrentState());
-<a class="jxr_linenumber" name="135" href="#135">135</a>       stateCount--;
-<a class="jxr_linenumber" name="136" href="#136">136</a>     } <strong class="jxr_keyword">finally</strong> {
-<a class="jxr_linenumber" name="137" href="#137">137</a>       updateTimestamp();
-<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> 
-<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">protected</strong> <strong class="jxr_keyword">boolean</strong> isYieldAfterExecutionStep(<strong class="jxr_keyword">final</strong> TEnvironment env) {
-<a class="jxr_linenumber" name="143" href="#143">143</a>     <strong class="jxr_keyword">return</strong> isYieldBeforeExecuteFromState(env, getCurrentState());
-<a class="jxr_linenumber" name="144" href="#144">144</a>   }
-<a class="jxr_linenumber" name="145" href="#145">145</a> 
-<a class="jxr_linenumber" name="146" href="#146">146</a>   <strong class="jxr_keyword">private</strong> TState getCurrentState() {
-<a class="jxr_linenumber" name="147" href="#147">147</a>     <strong class="jxr_keyword">return</strong> stateCount &gt; 0 ? getState(states[stateCount-1]) : getInitialState();
+<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
+<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.Arrays;
+<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.hadoop.hbase.classification.InterfaceAudience;
+<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceStability;
+<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.protobuf.generated.ProcedureProtos.StateMachineProcedureData;
+<a class="jxr_linenumber" name="30" href="#30">30</a>  
+<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * Procedure described by a series of steps.</em>
+<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * The procedure implementor must have an enum of 'states', describing</em>
+<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * the various step of the procedure.</em>
+<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * Once the procedure is running, the procedure-framework will call executeFromState()</em>
+<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * using the 'state' provided by the user. The first call to executeFromState()</em>
+<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * will be performed with 'state = null'. The implementor can jump between</em>
+<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * states using setNextState(MyStateEnum.ordinal()).</em>
+<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * The rollback will call rollbackState() for each state that was executed, in reverse order.</em>
+<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="42" href="#42">42</a>  @InterfaceAudience.Private
+<a class="jxr_linenumber" name="43" href="#43">43</a>  @InterfaceStability.Evolving
+<a class="jxr_linenumber" name="44" href="#44">44</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> StateMachineProcedure&lt;TEnvironment, TState&gt;
+<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">extends</strong> Procedure&lt;TEnvironment&gt; {
+<a class="jxr_linenumber" name="46" href="#46">46</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> stateCount = 0;
+<a class="jxr_linenumber" name="47" href="#47">47</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong>[] states = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="48" href="#48">48</a>  
+<a class="jxr_linenumber" name="49" href="#49">49</a>    <strong class="jxr_keyword">private</strong> ArrayList&lt;Procedure&gt; subProcList = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="50" href="#50">50</a>  
+<a class="jxr_linenumber" name="51" href="#51">51</a>    <strong class="jxr_keyword">protected</strong> enum <a href="../../../../../org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html">Flow</a> {
+<a class="jxr_linenumber" name="52" href="#52">52</a>      HAS_MORE_STATE,
+<a class="jxr_linenumber" name="53" href="#53">53</a>      NO_MORE_STATE,
+<a class="jxr_linenumber" name="54" href="#54">54</a>    }
+<a class="jxr_linenumber" name="55" href="#55">55</a>  
+<a class="jxr_linenumber" name="56" href="#56">56</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="57" href="#57">57</a>  <em class="jxr_javadoccomment">   * called to perform a single step of the specified 'state' of the procedure</em>
+<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment">   * @param state state to execute</em>
+<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment">   * @return Flow.NO_MORE_STATE if the procedure is completed,</em>
+<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">   *         Flow.HAS_MORE_STATE if there is another step.</em>
+<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="62" href="#62">62</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <a href="../../../../../org/apache/hadoop/hbase/procedure2/StateMachineProcedure.html">Flow</a> executeFromState(TEnvironment env, TState state)
+<a class="jxr_linenumber" name="63" href="#63">63</a>      <strong class="jxr_keyword">throws</strong> ProcedureYieldException, InterruptedException;
+<a class="jxr_linenumber" name="64" href="#64">64</a>  
+<a class="jxr_linenumber" name="65" href="#65">65</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">   * called to perform the rollback of the specified state</em>
+<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment">   * @param state state to rollback</em>
+<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">   * @throws IOException temporary failure, the rollback will retry later</em>
+<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="70" href="#70">70</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">void</strong> rollbackState(TEnvironment env, TState state)
+<a class="jxr_linenumber" name="71" href="#71">71</a>      <strong class="jxr_keyword">throws</strong> IOException, InterruptedException;
+<a class="jxr_linenumber" name="72" href="#72">72</a>  
+<a class="jxr_linenumber" name="73" href="#73">73</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">   * Convert an ordinal (or state id) to an Enum (or more descriptive) state object.</em>
+<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">   * @param stateId the ordinal() of the state enum (or state id)</em>
+<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">   * @return the state enum object</em>
+<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="78" href="#78">78</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> TState getState(<strong class="jxr_keyword">int</strong> stateId);
+<a class="jxr_linenumber" name="79" href="#79">79</a>  
+<a class="jxr_linenumber" name="80" href="#80">80</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment">   * Convert the Enum (or more descriptive) state object to an ordinal (or state id).</em>
+<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment">   * @param state the state enum object</em>
+<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">   * @return stateId the ordinal() of the state enum (or state id)</em>
+<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="85" href="#85">85</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">int</strong> getStateId(TState state);
+<a class="jxr_linenumber" name="86" href="#86">86</a>  
+<a class="jxr_linenumber" name="87" href="#87">87</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">   * Return the initial state object that will be used for the first call to executeFromState().</em>
+<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">   * @return the initial state enum object</em>
+<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="91" href="#91">91</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> TState getInitialState();
+<a class="jxr_linenumber" name="92" href="#92">92</a>  
+<a class="jxr_linenumber" name="93" href="#93">93</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment">   * Set the next state for the procedure.</em>
+<a class="jxr_linenumber" name="95" href="#95">95</a>  <em class="jxr_javadoccomment">   * @param state the state enum object</em>
+<a class="jxr_linenumber" name="96" href="#96">96</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="97" href="#97">97</a>    <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setNextState(<strong class="jxr_keyword">final</strong> TState state) {
+<a class="jxr_linenumber" name="98" href="#98">98</a>      setNextState(getStateId(state));
+<a class="jxr_linenumber" name="99" href="#99">99</a>    }
+<a class="jxr_linenumber" name="100" href="#100">100</a> 
+<a class="jxr_linenumber" name="101" href="#101">101</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">   * By default, the executor will try ro run all the steps of the procedure start to finish.</em>
+<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">   * Return true to make the executor yield between execution steps to</em>
+<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">   * give other procedures time to run their steps.</em>
+<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">   * @param state the state we are going to execute next.</em>
+<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">   * @return Return true if the executor should yield before the execution of the specified step.</em>
+<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment">   *         Defaults to return false.</em>
+<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="109" href="#109">109</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> isYieldBeforeExecuteFromState(TEnvironment env, TState state) {
+<a class="jxr_linenumber" name="110" href="#110">110</a>     <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="111" href="#111">111</a>   }
+<a class="jxr_linenumber" name="112" href="#112">112</a> 
+<a class="jxr_linenumber" name="113" href="#113">113</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment">   * Add a child procedure to execute</em>
+<a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment">   * @param subProcedure the child procedure</em>
+<a class="jxr_linenumber" name="116" href="#116">116</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="117" href="#117">117</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> addChildProcedure(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html">Procedure</a> subProcedure) {
+<a class="jxr_linenumber" name="118" href="#118">118</a>     <strong class="jxr_keyword">if</strong> (subProcList == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="119" href="#119">119</a>       subProcList = <strong class="jxr_keyword">new</strong> ArrayList&lt;Procedure&gt;();
+<a class="jxr_linenumber" name="120" href="#120">120</a>     }
+<a class="jxr_linenumber" name="121" href="#121">121</a>     subProcList.add(subProcedure);
+<a class="jxr_linenumber" name="122" href="#122">122</a>   }
+<a class="jxr_linenumber" name="123" href="#123">123</a> 
+<a class="jxr_linenumber" name="124" href="#124">124</a>   @Override
+<a class="jxr_linenumber" name="125" href="#125">125</a>   <strong class="jxr_keyword">protected</strong> <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html">Procedure</a>[] execute(<strong class="jxr_keyword">final</strong> TEnvironment env)
+<a class="jxr_linenumber" name="126" href="#126">126</a>       <strong class="jxr_keyword">throws</strong> ProcedureYieldException, InterruptedException {
+<a class="jxr_linenumber" name="127" href="#127">127</a>     updateTimestamp();
+<a class="jxr_linenumber" name="128" href="#128">128</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="129" href="#129">129</a>       TState state = getCurrentState();
+<a class="jxr_linenumber" name="130" href="#130">130</a>       <strong class="jxr_keyword">if</strong> (stateCount == 0) {
+<a class="jxr_linenumber" name="131" href="#131">131</a>         setNextState(getStateId(state));
+<a class="jxr_linenumber" name="132" href="#132">132</a>       }
+<a class="jxr_linenumber" name="133" href="#133">133</a>       <strong class="jxr_keyword">if</strong> (executeFromState(env, state) == Flow.NO_MORE_STATE) {
+<a class="jxr_linenumber" name="134" href="#134">134</a>         <em class="jxr_comment">// completed</em>
+<a class="jxr_linenumber" name="135" href="#135">135</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="136" href="#136">136</a>       }
+<a class="jxr_linenumber" name="137" href="#137">137</a> 
+<a class="jxr_linenumber" name="138" href="#138">138</a>       <strong class="jxr_keyword">if</strong> (subProcList != <strong class="jxr_keyword">null</strong> &amp;&amp; subProcList.size() != 0) {
+<a class="jxr_linenumber" name="139" href="#139">139</a>         <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html">Procedure</a>[] subProcedures = subProcList.toArray(<strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html">Procedure</a>[subProcList.size()]);
+<a class="jxr_linenumber" name="140" href="#140">140</a>         subProcList = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="141" href="#141">141</a>         <strong class="jxr_keyword">return</strong> subProcedures;
+<a class="jxr_linenumber" name="142" href="#142">142</a>       }
+<a class="jxr_linenumber" name="143" href="#143">143</a> 
+<a class="jxr_linenumber" name="144" href="#144">144</a>       <strong class="jxr_keyword">return</strong> (isWaiting() || isFailed()) ? <strong class="jxr_keyword">null</strong> : <strong class="jxr_keyword">new</strong> Procedure[] {<strong class="jxr_keyword">this</strong>};
+<a class="jxr_linenumber" name="145" href="#145">145</a>     } <strong class="jxr_keyword">finally</strong> {
+<a class="jxr_linenumber" name="146" href="#146">146</a>       updateTimestamp();
+<a class="jxr_linenumber" name="147" href="#147">147</a>     }
 <a class="jxr_linenumber" name="148" href="#148">148</a>   }
 <a class="jxr_linenumber" name="149" href="#149">149</a> 
-<a class="jxr_linenumber" name="150" href="#150">150</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment">   * Set the next state for the procedure.</em>
-<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_javadoccomment">   * @param stateId the ordinal() of the state enum (or state id)</em>
-<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="154" href="#154">154</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> setNextState(<strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> stateId) {
-<a class="jxr_linenumber" name="155" href="#155">155</a>     <strong class="jxr_keyword">if</strong> (states == <strong class="jxr_keyword">null</strong> || states.length == stateCount) {
-<a class="jxr_linenumber" name="156" href="#156">156</a>       <strong class="jxr_keyword">int</strong> newCapacity = stateCount + 8;
-<a class="jxr_linenumber" name="157" href="#157">157</a>       <strong class="jxr_keyword">if</strong> (states != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="158" href="#158">158</a>         states = Arrays.copyOf(states, newCapacity);
-<a class="jxr_linenumber" name="159" href="#159">159</a>       } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="160" href="#160">160</a>         states = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[newCapacity];
-<a class="jxr_linenumber" name="161" href="#161">161</a>       }
-<a class="jxr_linenumber" name="162" href="#162">162</a>     }
-<a class="jxr_linenumber" name="163" href="#163">163</a>     states[stateCount++] = stateId;
-<a class="jxr_linenumber" name="164" href="#164">164</a>   }
-<a class="jxr_linenumber" name="165" href="#165">165</a> 
-<a class="jxr_linenumber" name="166" href="#166">166</a>   @Override
-<a class="jxr_linenumber" name="167" href="#167">167</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> toStringState(StringBuilder builder) {
-<a class="jxr_linenumber" name="168" href="#168">168</a>     <strong class="jxr_keyword">super</strong>.toStringState(builder);
-<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">if</strong> (!isFinished() &amp;&amp; getCurrentState() != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="170" href="#170">170</a>       builder.append(<span class="jxr_string">":"</span>).append(getCurrentState());
-<a class="jxr_linenumber" name="171" href="#171">171</a>     }
-<a class="jxr_linenumber" name="172" href="#172">172</a>   }
-<a class="jxr_linenumber" name="173" href="#173">173</a> 
-<a class="jxr_linenumber" name="174" href="#174">174</a>   @Override
-<a class="jxr_linenumber" name="175" href="#175">175</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> serializeStateData(<strong class="jxr_keyword">final</strong> OutputStream stream) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="176" href="#176">176</a>     StateMachineProcedureData.Builder data = StateMachineProcedureData.newBuilder();
-<a class="jxr_linenumber" name="177" href="#177">177</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; stateCount; ++i) {
-<a class="jxr_linenumber" name="178" href="#178">178</a>       data.addState(states[i]);
-<a class="jxr_linenumber" name="179" href="#179">179</a>     }
-<a class="jxr_linenumber" name="180" href="#180">180</a>     data.build().writeDelimitedTo(stream);
-<a class="jxr_linenumber" name="181" href="#181">181</a>   }
-<a class="jxr_linenumber" name="182" href="#182">182</a> 
-<a class="jxr_linenumber" name="183" href="#183">183</a>   @Override
-<a class="jxr_linenumber" name="184" href="#184">184</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> deserializeStateData(<strong class="jxr_keyword">final</strong> InputStream stream) <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="185" href="#185">185</a>     StateMachineProcedureData data = StateMachineProcedureData.parseDelimitedFrom(stream);
-<a class="jxr_linenumber" name="186" href="#186">186</a>     stateCount = data.getStateCount();
-<a class="jxr_linenumber" name="187" href="#187">187</a>     <strong class="jxr_keyword">if</strong> (stateCount &gt; 0) {
-<a class="jxr_linenumber" name="188" href="#188">188</a>       states = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[stateCount];
-<a class="jxr_linenumber" name="189" href="#189">189</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; stateCount; ++i) {
-<a class="jxr_linenumber" name="190" href="#190">190</a>         states[i] = data.getState(i);
-<a class="jxr_linenumber" name="191" href="#191">191</a>       }
-<a class="jxr_linenumber" name="192" href="#192">192</a>     } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="193" href="#193">193</a>       states = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="194" href="#194">194</a>     }
-<a class="jxr_linenumber" name="195" href="#195">195</a>   }
-<a class="jxr_linenumber" name="196" href="#196">196</a> }
+<a class="jxr_linenumber" name="150" href="#150">150</a>   @Override
+<a class="jxr_linenumber" name="151" href="#151">151</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> rollback(<strong class="jxr_keyword">final</strong> TEnvironment env)
+<a class="jxr_linenumber" name="152" href="#152">152</a>       <strong class="jxr_keyword">throws</strong> IOException, InterruptedException {
+<a class="jxr_linenumber" name="153" href="#153">153</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="154" href="#154">154</a>       updateTimestamp();
+<a class="jxr_linenumber" name="155" href="#155">155</a>       rollbackState(env, getCurrentState());
+<a class="jxr_linenumber" name="156" href="#156">156</a>       stateCount--;
+<a class="jxr_linenumber" name="157" href="#157">157</a>     } <strong class="jxr_keyword">finally</strong> {
+<a class="jxr_linenumber" name="158" href="#158">158</a>       updateTimestamp();
+<a class="jxr_linenumber" name="159" href="#159">159</a>     }
+<a class="jxr_linenumber" name="160" href="#160">160</a>   }
+<a class="jxr_linenumber" name="161" href="#161">161</a> 
+<a class="jxr_linenumber" name="162" href="#162">162</a>   @Override
+<a class="jxr_linenumber" name="163" href="#163">163</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> isYieldAfterExecutionStep(<strong class="jxr_keyword">final</strong> TEnvironment env) {
+<a class="jxr_linenumber" name="164" href="#164">164</a>     <strong class="jxr_keyword">return</strong> isYieldBeforeExecuteFromState(env, getCurrentState());
+<a class="jxr_linenumber" name="165" href="#165">165</a>   }
+<a class="jxr_linenumber" name="166" href="#166">166</a> 
+<a class="jxr_linenumber" name="167" href="#167">167</a>   <strong class="jxr_keyword">private</strong> TState getCurrentState() {
+<a class="jxr_linenumber" name="168" href="#168">168</a>     <strong class="jxr_keyword">return</strong> stateCount &gt; 0 ? getState(states[stateCount-1]) : getInitialState();
+<a class="jxr_linenumber" name="169" href="#169">169</a>   }
+<a class="jxr_linenumber" name="170" href="#170">170</a> 
+<a class="jxr_linenumber" name="171" href="#171">171</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="172" href="#172">172</a> <em class="jxr_javadoccomment">   * Set the next state for the procedure.</em>
+<a class="jxr_linenumber" name="173" href="#173">173</a> <em class="jxr_javadoccomment">   * @param stateId the ordinal() of the state enum (or state id)</em>
+<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="175" href="#175">175</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> setNextState(<strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> stateId) {
+<a class="jxr_linenumber" name="176" href="#176">176</a>     <strong class="jxr_keyword">if</strong> (states == <strong class="jxr_keyword">null</strong> || states.length == stateCount) {
+<a class="jxr_linenumber" name="177" href="#177">177</a>       <strong class="jxr_keyword">int</strong> newCapacity = stateCount + 8;
+<a class="jxr_linenumber" name="178" href="#178">178</a>       <strong class="jxr_keyword">if</strong> (states != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="179" href="#179">179</a>         states = Arrays.copyOf(states, newCapacity);
+<a class="jxr_linenumber" name="180" href="#180">180</a>       } <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="181" href="#181">181</a>         states = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[newCapacity];
+<a class="jxr_linenumber" name="182" href="#182">182</a>       }
+<a class="jxr_linenumber" name="183" href="#183">183</a>     }
+<a class="jxr_linenumber" name="184" href="#184">184</a>     states[stateCount++] = stateId;
+<a class="jxr_linenumber" name="185" href="#185">185</a>   }
+<a class="jxr_linenumber" name="186" href="#186">186</a> 
+<a class="jxr_linenumber" name="187" href="#187">187</a>   @Override
+<a class="jxr_linenumber" name="188" href="#188">188</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> toStringState(StringBuilder builder) {
+<a class="jxr_linenumber" name="189" href="#189">189</a>     <strong class="jxr_keyword">super</strong>.toStringState(builder);
+<a class="jxr_linenumber" name="190" href="#190">190</a>     <strong class="jxr_keyword">if</strong> (!isFinished() &amp;&amp; getCurrentState() != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="191" href="#191">191</a>       builder.append(<span class="jxr_string">":"</span>).append(getCurrentState());
+<a class="jxr_linenumber" name="192" href="#192">192</a>     }
+<a class="jxr_linenumber" name="193" href="#193">193</a>   }
+<a class="jxr_linenumber" name="194" href="#194">194</a> 
+<a class="jxr_linenumber" name="195" href="#195">195</a>   @Override
+<a class="jxr_linenumber" name="196" href="#196">196</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> serializeStateData(<strong class="jxr_keyword">final</strong> OutputStream stream) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="197" href="#197">197</a>     StateMachineProcedureData.Builder data = StateMachineProcedureData.newBuilder();
+<a class="jxr_linenumber" name="198" href="#198">198</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; stateCount; ++i) {
+<a class="jxr_linenumber" name="199" href="#199">199</a>       data.addState(states[i]);
+<a class="jxr_linenumber" name="200" href="#200">200</a>     }
+<a class="jxr_linenumber" name="201" href="#201">201</a>     data.build().writeDelimitedTo(stream);
+<a class="jxr_linenumber" name="202" href="#202">202</a>   }
+<a class="jxr_linenumber" name="203" href="#203">203</a> 
+<a class="jxr_linenumber" name="204" href="#204">204</a>   @Override
+<a class="jxr_linenumber" name="205" href="#205">205</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> deserializeStateData(<strong class="jxr_keyword">final</strong> InputStream stream) <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="206" href="#206">206</a>     StateMachineProcedureData data = StateMachineProcedureData.parseDelimitedFrom(stream);
+<a class="jxr_linenumber" name="207" href="#207">207</a>     stateCount = data.getStateCount();
+<a class="jxr_linenumber" name="208" href="#208">208</a>     <strong class="jxr_keyword">if</strong> (stateCount &gt; 0) {
+<a class="jxr_linenumber" name="209" href="#209">209</a>       states = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[stateCount];
+<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; stateCount; ++i) {
+<a class="jxr_linenumber" name="211" href="#211">211</a>         states[i] = data.getState(i);
+<a class="jxr_linenumber" name="212" href="#212">212</a>       }
+<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>       states = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="215" href="#215">215</a>     }
+<a class="jxr_linenumber" name="216" href="#216">216</a>   }
+<a class="jxr_linenumber" name="217" href="#217">217</a> }
 </pre>
 <hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
 </html>

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/4ce8323f/xref/org/apache/hadoop/hbase/regionserver/AbstractMemStore.html
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diff --git a/xref/org/apache/hadoop/hbase/regionserver/AbstractMemStore.html b/xref/org/apache/hadoop/hbase/regionserver/AbstractMemStore.html
index cc46c51..27588a3 100644
--- a/xref/org/apache/hadoop/hbase/regionserver/AbstractMemStore.html
+++ b/xref/org/apache/hadoop/hbase/regionserver/AbstractMemStore.html
@@ -236,36 +236,36 @@
 <a class="jxr_linenumber" name="226" href="#226">226</a>     <strong class="jxr_keyword">return</strong> getSnapshot().getSize();
 <a class="jxr_linenumber" name="227" href="#227">227</a>   }
 <a class="jxr_linenumber" name="228" href="#228">228</a> 
-<a class="jxr_linenumber" name="229" href="#229">229</a>   @Override
-<a class="jxr_linenumber" name="230" href="#230">230</a>   <strong class="jxr_keyword">public</strong> String toString() {
-<a class="jxr_linenumber" name="231" href="#231">231</a>     StringBuffer buf = <strong class="jxr_keyword">new</strong> StringBuffer();
-<a class="jxr_linenumber" name="232" href="#232">232</a>     <strong class="jxr_keyword">int</strong> i = 1;
-<a class="jxr_linenumber" name="233" href="#233">233</a>     <strong class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="234" href="#234">234</a>       <strong class="jxr_keyword">for</strong> (Segment segment : getListOfSegments()) {
-<a class="jxr_linenumber" name="235" href="#235">235</a>         buf.append(<span class="jxr_string">"Segment ("</span> + i + <span class="jxr_string">") "</span> + segment.toString() + <span class="jxr_string">"; "</span>);
-<a class="jxr_linenumber" name="236" href="#236">236</a>         i++;
-<a class="jxr_linenumber" name="237" href="#237">237</a>       }
-<a class="jxr_linenumber" name="238" href="#238">238</a>     } <strong class="jxr_keyword">catch</strong> (IOException e){
-<a class="jxr_linenumber" name="239" href="#239">239</a>       <strong class="jxr_keyword">return</strong> e.toString();
-<a class="jxr_linenumber" name="240" href="#240">240</a>     }
-<a class="jxr_linenumber" name="241" href="#241">241</a>     <strong class="jxr_keyword">return</strong> buf.toString();
-<a class="jxr_linenumber" name="242" href="#242">242</a>   }
-<a class="jxr_linenumber" name="243" href="#243">243</a> 
-<a class="jxr_linenumber" name="244" href="#244">244</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> rollbackInSnapshot(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) {
-<a class="jxr_linenumber" name="245" href="#245">245</a>     <em class="jxr_comment">// If the key is in the snapshot, delete it. We should not update</em>
-<a class="jxr_linenumber" name="246" href="#246">246</a>     <em class="jxr_comment">// this.size, because that tracks the size of only the memstore and</em>
-<a class="jxr_linenumber" name="247" href="#247">247</a>     <em class="jxr_comment">// not the snapshot. The flush of this snapshot to disk has not</em>
-<a class="jxr_linenumber" name="248" href="#248">248</a>     <em class="jxr_comment">// yet started because Store.flush() waits for all rwcc transactions to</em>
-<a class="jxr_linenumber" name="249" href="#249">249</a>     <em class="jxr_comment">// commit before starting the flush to disk.</em>
-<a class="jxr_linenumber" name="250" href="#250">250</a>     snapshot.rollback(cell);
-<a class="jxr_linenumber" name="251" href="#251">251</a>   }
-<a class="jxr_linenumber" name="252" href="#252">252</a> 
-<a class="jxr_linenumber" name="253" href="#253">253</a>   <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> rollbackInActive(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) {
-<a class="jxr_linenumber" name="254" href="#254">254</a>     <em class="jxr_comment">// If the key is in the memstore, delete it. Update this.size.</em>
-<a class="jxr_linenumber" name="255" href="#255">255</a>     <strong class="jxr_keyword">long</strong> sz = active.rollback(cell);
-<a class="jxr_linenumber" name="256" href="#256">256</a>     <strong class="jxr_keyword">if</strong> (sz != 0) {
-<a class="jxr_linenumber" name="257" href="#257">257</a>       setOldestEditTimeToNow();
-<a class="jxr_linenumber" name="258" href="#258">258</a>     }
+<a class="jxr_linenumber" name="229" href="#229">229</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="230" href="#230">230</a> <em class="jxr_javadoccomment">   * Remove n key from the memstore. Only cells that have the same key and the</em>
+<a class="jxr_linenumber" name="231" href="#231">231</a> <em class="jxr_javadoccomment">   * same memstoreTS are removed.  It is ok to not update timeRangeTracker</em>
+<a class="jxr_linenumber" name="232" href="#232">232</a> <em class="jxr_javadoccomment">   * in this call. It is possible that we can optimize this method by using</em>
+<a class="jxr_linenumber" name="233" href="#233">233</a> <em class="jxr_javadoccomment">   * tailMap/iterator, but since this method is called rarely (only for</em>
+<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment">   * error recovery), we can leave those optimization for the future.</em>
+<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment">   * @param cell</em>
+<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="237" href="#237">237</a>   @Override
+<a class="jxr_linenumber" name="238" href="#238">238</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> rollback(<a href="../../../../../org/apache/hadoop/hbase/Cell.html">Cell</a> cell) {
+<a class="jxr_linenumber" name="239" href="#239">239</a>     <em class="jxr_comment">// If the key is in the active, delete it. Update this.size.</em>
+<a class="jxr_linenumber" name="240" href="#240">240</a>     <strong class="jxr_keyword">long</strong> sz = active.rollback(cell);
+<a class="jxr_linenumber" name="241" href="#241">241</a>     <strong class="jxr_keyword">if</strong> (sz != 0) {
+<a class="jxr_linenumber" name="242" href="#242">242</a>       setOldestEditTimeToNow();
+<a class="jxr_linenumber" name="243" href="#243">243</a>     }
+<a class="jxr_linenumber" name="244" href="#244">244</a>   }
+<a class="jxr_linenumber" name="245" href="#245">245</a> 
+<a class="jxr_linenumber" name="246" href="#246">246</a>   @Override
+<a class="jxr_linenumber" name="247" href="#247">247</a>   <strong class="jxr_keyword">public</strong> String toString() {
+<a class="jxr_linenumber" name="248" href="#248">248</a>     StringBuffer buf = <strong class="jxr_keyword">new</strong> StringBuffer();
+<a class="jxr_linenumber" name="249" href="#249">249</a>     <strong class="jxr_keyword">int</strong> i = 1;
+<a class="jxr_linenumber" name="250" href="#250">250</a>     <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="251" href="#251">251</a>       <strong class="jxr_keyword">for</strong> (Segment segment : getListOfSegments()) {
+<a class="jxr_linenumber" name="252" href="#252">252</a>         buf.append(<span class="jxr_string">"Segment ("</span> + i + <span class="jxr_string">") "</span> + segment.toString() + <span class="jxr_string">"; "</span>);
+<a class="jxr_linenumber" name="253" href="#253">253</a>         i++;
+<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> (IOException e){
+<a class="jxr_linenumber" name="256" href="#256">256</a>       <strong class="jxr_keyword">return</strong> e.toString();
+<a class="jxr_linenumber" name="257" href="#257">257</a>     }
+<a class="jxr_linenumber" name="258" href="#258">258</a>     <strong class="jxr_keyword">return</strong> buf.toString();
 <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">protected</strong> Configuration getConfiguration() {


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