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From mi...@apache.org
Subject [02/34] hbase git commit: Published site at 0bae444b34b6be3a28b5ccc036afb5add23818c6.
Date Tue, 24 Nov 2015 23:19:30 GMT
http://git-wip-us.apache.org/repos/asf/hbase/blob/8acdc839/xref/org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html
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diff --git a/xref/org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html b/xref/org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html
index 8d5f512..1ff910d 100644
--- a/xref/org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html
+++ b/xref/org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html
@@ -70,512 +70,513 @@
 <a class="jxr_linenumber" name="60" href="#60">60</a>        <span class="jxr_string">"_max"</span>,
 <a class="jxr_linenumber" name="61" href="#61">61</a>        <span class="jxr_string">"_median"</span>,
 <a class="jxr_linenumber" name="62" href="#62">62</a>        <span class="jxr_string">"_75th_percentile"</span>,
-<a class="jxr_linenumber" name="63" href="#63">63</a>        <span class="jxr_string">"_95th_percentile"</span>,
-<a class="jxr_linenumber" name="64" href="#64">64</a>        <span class="jxr_string">"_99th_percentile"</span>};
-<a class="jxr_linenumber" name="65" href="#65">65</a>  
-<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>  <em class="jxr_javadoccomment">   * Construct the registry with a record name</em>
-<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">   * @param name  of the record of the metrics</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">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a>(String name) {
-<a class="jxr_linenumber" name="71" href="#71">71</a>      <strong class="jxr_keyword">this</strong>(Interns.info(name,name));
-<a class="jxr_linenumber" name="72" href="#72">72</a>    }
-<a class="jxr_linenumber" name="73" href="#73">73</a>  
-<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>  <em class="jxr_javadoccomment">   * Construct the registry with a metadata object</em>
-<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">   * @param info  the info object for the metrics record/group</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">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a>(MetricsInfo info) {
-<a class="jxr_linenumber" name="79" href="#79">79</a>      metricsInfo = info;
-<a class="jxr_linenumber" name="80" href="#80">80</a>    }
-<a class="jxr_linenumber" name="81" href="#81">81</a>  
-<a class="jxr_linenumber" name="82" href="#82">82</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">   * @return the info object of the metrics registry</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">public</strong> MetricsInfo info() {
-<a class="jxr_linenumber" name="86" href="#86">86</a>      <strong class="jxr_keyword">return</strong> metricsInfo;
-<a class="jxr_linenumber" name="87" href="#87">87</a>    }
-<a class="jxr_linenumber" name="88" href="#88">88</a>  
-<a class="jxr_linenumber" name="89" href="#89">89</a>    <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">   * Get a metric by name</em>
-<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">   * @return the metric 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">public</strong> MutableMetric get(String name) {
-<a class="jxr_linenumber" name="95" href="#95">95</a>      <strong class="jxr_keyword">return</strong> metricsMap.get(name);
-<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">   * Get a tag by name</em>
-<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">   * @param name  of the tag</em>
-<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">   * @return the tag object</em>
-<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="103" href="#103">103</a>   <strong class="jxr_keyword">public</strong> MetricsTag getTag(String name) {
-<a class="jxr_linenumber" name="104" href="#104">104</a>     <strong class="jxr_keyword">return</strong> tagsMap.get(name);
-<a class="jxr_linenumber" name="105" href="#105">105</a>   }
-<a class="jxr_linenumber" name="106" href="#106">106</a> 
-<a class="jxr_linenumber" name="107" href="#107">107</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">   * Create a mutable integer counter</em>
-<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
-<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
-<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>   <strong class="jxr_keyword">public</strong> MutableCounterInt newCounter(String name, String desc, <strong class="jxr_keyword">int</strong> iVal) {
-<a class="jxr_linenumber" name="115" href="#115">115</a>     <strong class="jxr_keyword">return</strong> newCounter(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
-<a class="jxr_linenumber" name="116" href="#116">116</a>   }
-<a class="jxr_linenumber" name="117" href="#117">117</a> 
-<a class="jxr_linenumber" name="118" href="#118">118</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment">   * Create a mutable integer counter</em>
-<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
-<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
-<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="124" href="#124">124</a>   <strong class="jxr_keyword">public</strong> MutableCounterInt newCounter(MetricsInfo info, <strong class="jxr_keyword">int</strong> iVal) {
-<a class="jxr_linenumber" name="125" href="#125">125</a>     MutableCounterInt ret = <strong class="jxr_keyword">new</strong> MutableCounterInt(info, iVal);
-<a class="jxr_linenumber" name="126" href="#126">126</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableCounterInt.<strong class="jxr_keyword">class</strong>);
-<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>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="130" href="#130">130</a> <em class="jxr_javadoccomment">   * Create a mutable long integer counter</em>
-<a class="jxr_linenumber" name="131" href="#131">131</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
-<a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
-<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="136" href="#136">136</a>   <strong class="jxr_keyword">public</strong> MutableCounterLong newCounter(String name, String desc, <strong class="jxr_keyword">long</strong> iVal) {
-<a class="jxr_linenumber" name="137" href="#137">137</a>     <strong class="jxr_keyword">return</strong> newCounter(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
-<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>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="141" href="#141">141</a> <em class="jxr_javadoccomment">   * Create a mutable long integer counter</em>
-<a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
-<a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
-<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="146" href="#146">146</a>   <strong class="jxr_keyword">public</strong> MutableCounterLong newCounter(MetricsInfo info, <strong class="jxr_keyword">long</strong> iVal) {
-<a class="jxr_linenumber" name="147" href="#147">147</a>     MutableCounterLong ret = <strong class="jxr_keyword">new</strong> MutableCounterLong(info, iVal);
-<a class="jxr_linenumber" name="148" href="#148">148</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableCounterLong.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="149" href="#149">149</a>   }
-<a class="jxr_linenumber" name="150" href="#150">150</a> 
-<a class="jxr_linenumber" name="151" href="#151">151</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_javadoccomment">   * Create a mutable integer gauge</em>
-<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
-<a class="jxr_linenumber" name="155" href="#155">155</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
-<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="158" href="#158">158</a>   <strong class="jxr_keyword">public</strong> MutableGaugeInt newGauge(String name, String desc, <strong class="jxr_keyword">int</strong> iVal) {
-<a class="jxr_linenumber" name="159" href="#159">159</a>     <strong class="jxr_keyword">return</strong> newGauge(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
-<a class="jxr_linenumber" name="160" href="#160">160</a>   }
-<a class="jxr_linenumber" name="161" href="#161">161</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment">   * Create a mutable integer gauge</em>
-<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
-<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
-<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="167" href="#167">167</a>   <strong class="jxr_keyword">public</strong> MutableGaugeInt newGauge(MetricsInfo info, <strong class="jxr_keyword">int</strong> iVal) {
-<a class="jxr_linenumber" name="168" href="#168">168</a>     MutableGaugeInt ret = <strong class="jxr_keyword">new</strong> MutableGaugeInt(info, iVal);
-<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableGaugeInt.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="170" href="#170">170</a>   }
-<a class="jxr_linenumber" name="171" href="#171">171</a> 
-<a class="jxr_linenumber" name="172" href="#172">172</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="173" href="#173">173</a> <em class="jxr_javadoccomment">   * Create a mutable long integer gauge</em>
-<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
-<a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="177" href="#177">177</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
-<a class="jxr_linenumber" name="178" href="#178">178</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="179" href="#179">179</a>   <strong class="jxr_keyword">public</strong> MutableGaugeLong newGauge(String name, String desc, <strong class="jxr_keyword">long</strong> iVal) {
-<a class="jxr_linenumber" name="180" href="#180">180</a>     <strong class="jxr_keyword">return</strong> newGauge(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
-<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>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_javadoccomment">   * Create a mutable long integer gauge</em>
-<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
-<a class="jxr_linenumber" name="186" href="#186">186</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
-<a class="jxr_linenumber" name="187" href="#187">187</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
-<a class="jxr_linenumber" name="188" href="#188">188</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="189" href="#189">189</a>   <strong class="jxr_keyword">public</strong> MutableGaugeLong newGauge(MetricsInfo info, <strong class="jxr_keyword">long</strong> iVal) {
-<a class="jxr_linenumber" name="190" href="#190">190</a>     MutableGaugeLong ret = <strong class="jxr_keyword">new</strong> MutableGaugeLong(info, iVal);
-<a class="jxr_linenumber" name="191" href="#191">191</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableGaugeLong.<strong class="jxr_keyword">class</strong>);
-<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>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="195" href="#195">195</a> <em class="jxr_javadoccomment">   * Create a mutable metric with stats</em>
-<a class="jxr_linenumber" name="196" href="#196">196</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="197" href="#197">197</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
-<a class="jxr_linenumber" name="198" href="#198">198</a> <em class="jxr_javadoccomment">   * @param sampleName  of the metric (e.g., "Ops")</em>
-<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_javadoccomment">   * @param valueName   of the metric (e.g., "Time" or "Latency")</em>
-<a class="jxr_linenumber" name="200" href="#200">200</a> <em class="jxr_javadoccomment">   * @param extended    produce extended stat (stdev, min/max etc.) if true.</em>
-<a class="jxr_linenumber" name="201" href="#201">201</a> <em class="jxr_javadoccomment">   * @return a new mutable stat metric object</em>
-<a class="jxr_linenumber" name="202" href="#202">202</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="203" href="#203">203</a>   <strong class="jxr_keyword">public</strong> MutableStat newStat(String name, String desc,
-<a class="jxr_linenumber" name="204" href="#204">204</a>       String sampleName, String valueName, <strong class="jxr_keyword">boolean</strong> extended) {
-<a class="jxr_linenumber" name="205" href="#205">205</a>     MutableStat ret =
-<a class="jxr_linenumber" name="206" href="#206">206</a>         <strong class="jxr_keyword">new</strong> MutableStat(name, desc, sampleName, valueName, extended);
-<a class="jxr_linenumber" name="207" href="#207">207</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, ret, MutableStat.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="208" href="#208">208</a>   }
-<a class="jxr_linenumber" name="209" href="#209">209</a> 
-<a class="jxr_linenumber" name="210" href="#210">210</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="211" href="#211">211</a> <em class="jxr_javadoccomment">   * Create a mutable metric with stats</em>
-<a class="jxr_linenumber" name="212" href="#212">212</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="213" href="#213">213</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
-<a class="jxr_linenumber" name="214" href="#214">214</a> <em class="jxr_javadoccomment">   * @param sampleName  of the metric (e.g., "Ops")</em>
-<a class="jxr_linenumber" name="215" href="#215">215</a> <em class="jxr_javadoccomment">   * @param valueName   of the metric (e.g., "Time" or "Latency")</em>
-<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_javadoccomment">   * @return a new mutable metric object</em>
-<a class="jxr_linenumber" name="217" href="#217">217</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="218" href="#218">218</a>   <strong class="jxr_keyword">public</strong> MutableStat newStat(String name, String desc,
-<a class="jxr_linenumber" name="219" href="#219">219</a>                              String sampleName, String valueName) {
-<a class="jxr_linenumber" name="220" href="#220">220</a>     <strong class="jxr_keyword">return</strong> newStat(name, desc, sampleName, valueName, false);
-<a class="jxr_linenumber" name="221" href="#221">221</a>   }
-<a class="jxr_linenumber" name="222" href="#222">222</a> 
-<a class="jxr_linenumber" name="223" href="#223">223</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="224" href="#224">224</a> <em class="jxr_javadoccomment">   * Create a mutable rate metric</em>
-<a class="jxr_linenumber" name="225" href="#225">225</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="226" href="#226">226</a> <em class="jxr_javadoccomment">   * @return a new mutable metric object</em>
-<a class="jxr_linenumber" name="227" href="#227">227</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="228" href="#228">228</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name) {
-<a class="jxr_linenumber" name="229" href="#229">229</a>     <strong class="jxr_keyword">return</strong> newRate(name, name, false);
-<a class="jxr_linenumber" name="230" href="#230">230</a>   }
-<a class="jxr_linenumber" name="231" href="#231">231</a> 
-<a class="jxr_linenumber" name="232" href="#232">232</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="233" href="#233">233</a> <em class="jxr_javadoccomment">   * Create a mutable rate metric</em>
-<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment">   * @param description of the metric</em>
-<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment">   * @return a new mutable rate metric object</em>
-<a class="jxr_linenumber" name="237" href="#237">237</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="238" href="#238">238</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name, String description) {
-<a class="jxr_linenumber" name="239" href="#239">239</a>     <strong class="jxr_keyword">return</strong> newRate(name, description, false);
-<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>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="243" href="#243">243</a> <em class="jxr_javadoccomment">   * Create a mutable rate metric (for throughput measurement)</em>
-<a class="jxr_linenumber" name="244" href="#244">244</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_javadoccomment">   * @param desc  description</em>
-<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_javadoccomment">   * @param extended  produce extended stat (stdev/min/max etc.) if true</em>
-<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_javadoccomment">   * @return a new mutable rate metric object</em>
-<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="249" href="#249">249</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name, String desc, <strong class="jxr_keyword">boolean</strong> extended) {
-<a class="jxr_linenumber" name="250" href="#250">250</a>     <strong class="jxr_keyword">return</strong> newRate(name, desc, extended, <strong class="jxr_keyword">true</strong>);
-<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>   @InterfaceAudience.Private
-<a class="jxr_linenumber" name="254" href="#254">254</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name, String desc,
-<a class="jxr_linenumber" name="255" href="#255">255</a>       <strong class="jxr_keyword">boolean</strong> extended, <strong class="jxr_keyword">boolean</strong> returnExisting) {
-<a class="jxr_linenumber" name="256" href="#256">256</a>     <strong class="jxr_keyword">if</strong> (returnExisting) {
-<a class="jxr_linenumber" name="257" href="#257">257</a>       MutableMetric rate = metricsMap.get(name);
-<a class="jxr_linenumber" name="258" href="#258">258</a>       <strong class="jxr_keyword">if</strong> (rate != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="259" href="#259">259</a>         <strong class="jxr_keyword">if</strong> (rate instanceof MutableRate) <strong class="jxr_keyword">return</strong> (MutableRate) rate;
-<a class="jxr_linenumber" name="260" href="#260">260</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> MetricsException(<span class="jxr_string">"Unexpected metrics type "</span>+ rate.getClass()
-<a class="jxr_linenumber" name="261" href="#261">261</a>                                    +<span class="jxr_string">" for "</span>+ name);
-<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>     MutableRate ret = <strong class="jxr_keyword">new</strong> MutableRate(name, desc, extended);
-<a class="jxr_linenumber" name="265" href="#265">265</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, ret, MutableRate.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="266" href="#266">266</a>   }
-<a class="jxr_linenumber" name="267" href="#267">267</a> 
-<a class="jxr_linenumber" name="268" href="#268">268</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="269" href="#269">269</a> <em class="jxr_javadoccomment">   * Create a new histogram.</em>
-<a class="jxr_linenumber" name="270" href="#270">270</a> <em class="jxr_javadoccomment">   * @param name Name of the histogram.</em>
-<a class="jxr_linenumber" name="271" href="#271">271</a> <em class="jxr_javadoccomment">   * @return A new MutableHistogram</em>
-<a class="jxr_linenumber" name="272" href="#272">272</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="273" href="#273">273</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a> newHistogram(String name) {
-<a class="jxr_linenumber" name="274" href="#274">274</a>      <strong class="jxr_keyword">return</strong> newHistogram(name, <span class="jxr_string">""</span>);
-<a class="jxr_linenumber" name="275" href="#275">275</a>   }
-<a class="jxr_linenumber" name="276" href="#276">276</a> 
-<a class="jxr_linenumber" name="277" href="#277">277</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="278" href="#278">278</a> <em class="jxr_javadoccomment">   * Create a new histogram.</em>
-<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_javadoccomment">   * @param name The name of the histogram</em>
-<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment">   * @param desc The description of the data in the histogram.</em>
-<a class="jxr_linenumber" name="281" href="#281">281</a> <em class="jxr_javadoccomment">   * @return A new MutableHistogram</em>
-<a class="jxr_linenumber" name="282" href="#282">282</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="283" href="#283">283</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a> newHistogram(String name, String desc) {
-<a class="jxr_linenumber" name="284" href="#284">284</a>     <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a> histo = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a>(name, desc);
-<a class="jxr_linenumber" name="285" href="#285">285</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, histo, MutableHistogram.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="286" href="#286">286</a>   }
-<a class="jxr_linenumber" name="287" href="#287">287</a> 
-<a class="jxr_linenumber" name="288" href="#288">288</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="289" href="#289">289</a> <em class="jxr_javadoccomment">   * Create a new MutableQuantile(A more accurate histogram).</em>
-<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment">   * @param name The name of the histogram</em>
-<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment">   * @return a new MutableQuantile</em>
-<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="293" href="#293">293</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a> newQuantile(String name) {
-<a class="jxr_linenumber" name="294" href="#294">294</a>     <strong class="jxr_keyword">return</strong> newQuantile(name, <span class="jxr_string">""</span>);
-<a class="jxr_linenumber" name="295" href="#295">295</a>   }
-<a class="jxr_linenumber" name="296" href="#296">296</a> 
-<a class="jxr_linenumber" name="297" href="#297">297</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a> newQuantile(String name, String desc) {
-<a class="jxr_linenumber" name="298" href="#298">298</a>     <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a> histo = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a>(name, desc, <span class="jxr_string">"Ops"</span>, <span class="jxr_string">""</span>, 60);
-<a class="jxr_linenumber" name="299" href="#299">299</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, histo, MetricMutableQuantiles.<strong class="jxr_keyword">class</strong>);
-<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>   <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> add(String name, MutableMetric metric) {
-<a class="jxr_linenumber" name="303" href="#303">303</a>     addNewMetricIfAbsent(name, metric, MutableMetric.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="304" href="#304">304</a>   }
-<a class="jxr_linenumber" name="305" href="#305">305</a> 
-<a class="jxr_linenumber" name="306" href="#306">306</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="307" href="#307">307</a> <em class="jxr_javadoccomment">   * Add sample to a stat metric by name.</em>
-<a class="jxr_linenumber" name="308" href="#308">308</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
-<a class="jxr_linenumber" name="309" href="#309">309</a> <em class="jxr_javadoccomment">   * @param value of the snapshot to add</em>
-<a class="jxr_linenumber" name="310" href="#310">310</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="311" href="#311">311</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> add(String name, <strong class="jxr_keyword">long</strong> value) {
-<a class="jxr_linenumber" name="312" href="#312">312</a>     MutableMetric m = metricsMap.get(name);
-<a class="jxr_linenumber" name="313" href="#313">313</a> 
-<a class="jxr_linenumber" name="314" href="#314">314</a>     <strong class="jxr_keyword">if</strong> (m != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="315" href="#315">315</a>       <strong class="jxr_keyword">if</strong> (m instanceof MutableStat) {
-<a class="jxr_linenumber" name="316" href="#316">316</a>         ((MutableStat) m).add(value);
-<a class="jxr_linenumber" name="317" href="#317">317</a>       }
-<a class="jxr_linenumber" name="318" href="#318">318</a>       <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="319" href="#319">319</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> MetricsException(<span class="jxr_string">"Unsupported add(value) for metric "</span>+ name);
-<a class="jxr_linenumber" name="320" href="#320">320</a>       }
-<a class="jxr_linenumber" name="321" href="#321">321</a>     }
-<a class="jxr_linenumber" name="322" href="#322">322</a>     <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="323" href="#323">323</a>       metricsMap.put(name, newRate(name)); <em class="jxr_comment">// default is a rate metric</em>
-<a class="jxr_linenumber" name="324" href="#324">324</a>       add(name, value);
-<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> 
-<a class="jxr_linenumber" name="328" href="#328">328</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="329" href="#329">329</a> <em class="jxr_javadoccomment">   * Set the metrics context tag</em>
-<a class="jxr_linenumber" name="330" href="#330">330</a> <em class="jxr_javadoccomment">   * @param name of the context</em>
-<a class="jxr_linenumber" name="331" href="#331">331</a> <em class="jxr_javadoccomment">   * @return the registry itself as a convenience</em>
-<a class="jxr_linenumber" name="332" href="#332">332</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="333" href="#333">333</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> setContext(String name) {
-<a class="jxr_linenumber" name="334" href="#334">334</a>     <strong class="jxr_keyword">return</strong> tag(MsInfo.Context, name, <strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="335" href="#335">335</a>   }
-<a class="jxr_linenumber" name="336" href="#336">336</a> 
-<a class="jxr_linenumber" name="337" href="#337">337</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="338" href="#338">338</a> <em class="jxr_javadoccomment">   * Add a tag to the metrics</em>
-<a class="jxr_linenumber" name="339" href="#339">339</a> <em class="jxr_javadoccomment">   * @param name  of the tag</em>
-<a class="jxr_linenumber" name="340" href="#340">340</a> <em class="jxr_javadoccomment">   * @param description of the tag</em>
-<a class="jxr_linenumber" name="341" href="#341">341</a> <em class="jxr_javadoccomment">   * @param value of the tag</em>
-<a class="jxr_linenumber" name="342" href="#342">342</a> <em class="jxr_javadoccomment">   * @return the registry (for keep adding tags)</em>
-<a class="jxr_linenumber" name="343" href="#343">343</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="344" href="#344">344</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> tag(String name, String description, String value) {
-<a class="jxr_linenumber" name="345" href="#345">345</a>     <strong class="jxr_keyword">return</strong> tag(name, description, value, false);
-<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>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="349" href="#349">349</a> <em class="jxr_javadoccomment">   * Add a tag to the metrics</em>
-<a class="jxr_linenumber" name="350" href="#350">350</a> <em class="jxr_javadoccomment">   * @param name  of the tag</em>
-<a class="jxr_linenumber" name="351" href="#351">351</a> <em class="jxr_javadoccomment">   * @param description of the tag</em>
-<a class="jxr_linenumber" name="352" href="#352">352</a> <em class="jxr_javadoccomment">   * @param value of the tag</em>
-<a class="jxr_linenumber" name="353" href="#353">353</a> <em class="jxr_javadoccomment">   * @param override  existing tag if true</em>
-<a class="jxr_linenumber" name="354" href="#354">354</a> <em class="jxr_javadoccomment">   * @return the registry (for keep adding tags)</em>
-<a class="jxr_linenumber" name="355" href="#355">355</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="356" href="#356">356</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> tag(String name, String description, String value,
-<a class="jxr_linenumber" name="357" href="#357">357</a>                              <strong class="jxr_keyword">boolean</strong> override) {
-<a class="jxr_linenumber" name="358" href="#358">358</a>     <strong class="jxr_keyword">return</strong> tag(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, description), value, override);
-<a class="jxr_linenumber" name="359" href="#359">359</a>   }
-<a class="jxr_linenumber" name="360" href="#360">360</a> 
-<a class="jxr_linenumber" name="361" href="#361">361</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="362" href="#362">362</a> <em class="jxr_javadoccomment">   * Add a tag to the metrics</em>
-<a class="jxr_linenumber" name="363" href="#363">363</a> <em class="jxr_javadoccomment">   * @param info  metadata of the tag</em>
-<a class="jxr_linenumber" name="364" href="#364">364</a> <em class="jxr_javadoccomment">   * @param value of the tag</em>
-<a class="jxr_linenumber" name="365" href="#365">365</a> <em class="jxr_javadoccomment">   * @param override existing tag if true</em>
-<a class="jxr_linenumber" name="366" href="#366">366</a> <em class="jxr_javadoccomment">   * @return the registry (for keep adding tags etc.)</em>
-<a class="jxr_linenumber" name="367" href="#367">367</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="368" href="#368">368</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> tag(MetricsInfo info, String value, <strong class="jxr_keyword">boolean</strong> override) {
-<a class="jxr_linenumber" name="369" href="#369">369</a>     MetricsTag tag = Interns.tag(info, value);
-<a class="jxr_linenumber" name="370" href="#370">370</a> 
-<a class="jxr_linenumber" name="371" href="#371">371</a>     <strong class="jxr_keyword">if</strong> (!override) {
-<a class="jxr_linenumber" name="372" href="#372">372</a>       MetricsTag existing = tagsMap.putIfAbsent(info.name(), tag);
-<a class="jxr_linenumber" name="373" href="#373">373</a>       <strong class="jxr_keyword">if</strong> (existing != <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="374" href="#374">374</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> MetricsException(<span class="jxr_string">"Tag "</span>+ info.name() +<span class="jxr_string">" already exists!"</span>);
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-<a class="jxr_linenumber" name="378" href="#378">378</a> 
-<a class="jxr_linenumber" name="379" href="#379">379</a>     tagsMap.put(info.name(), tag);
-<a class="jxr_linenumber" name="380" href="#380">380</a> 
-<a class="jxr_linenumber" name="381" href="#381">381</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>;
-<a class="jxr_linenumber" name="382" href="#382">382</a>   }
-<a class="jxr_linenumber" name="383" href="#383">383</a> 
-<a class="jxr_linenumber" name="384" href="#384">384</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> tag(MetricsInfo info, String value) {
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-<a class="jxr_linenumber" name="386" href="#386">386</a>   }
-<a class="jxr_linenumber" name="387" href="#387">387</a> 
-<a class="jxr_linenumber" name="388" href="#388">388</a>   Collection&lt;MetricsTag&gt; tags() {
-<a class="jxr_linenumber" name="389" href="#389">389</a>     <strong class="jxr_keyword">return</strong> tagsMap.values();
-<a class="jxr_linenumber" name="390" href="#390">390</a>   }
-<a class="jxr_linenumber" name="391" href="#391">391</a> 
-<a class="jxr_linenumber" name="392" href="#392">392</a>   Collection&lt;MutableMetric&gt; metrics() {
-<a class="jxr_linenumber" name="393" href="#393">393</a>     <strong class="jxr_keyword">return</strong> metricsMap.values();
-<a class="jxr_linenumber" name="394" href="#394">394</a>   }
-<a class="jxr_linenumber" name="395" href="#395">395</a> 
-<a class="jxr_linenumber" name="396" href="#396">396</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="397" href="#397">397</a> <em class="jxr_javadoccomment">   * Sample all the mutable metrics and put the snapshot in the builder</em>
-<a class="jxr_linenumber" name="398" href="#398">398</a> <em class="jxr_javadoccomment">   * @param builder to contain the metrics snapshot</em>
-<a class="jxr_linenumber" name="399" href="#399">399</a> <em class="jxr_javadoccomment">   * @param all get all the metrics even if the values are not changed.</em>
-<a class="jxr_linenumber" name="400" href="#400">400</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="401" href="#401">401</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> snapshot(MetricsRecordBuilder builder, <strong class="jxr_keyword">boolean</strong> all) {
-<a class="jxr_linenumber" name="402" href="#402">402</a>     <strong class="jxr_keyword">for</strong> (MetricsTag tag : tags()) {
-<a class="jxr_linenumber" name="403" href="#403">403</a>       builder.add(tag);
-<a class="jxr_linenumber" name="404" href="#404">404</a>     }
-<a class="jxr_linenumber" name="405" href="#405">405</a>     <strong class="jxr_keyword">for</strong> (MutableMetric metric : metrics()) {
-<a class="jxr_linenumber" name="406" href="#406">406</a>       metric.snapshot(builder, all);
-<a class="jxr_linenumber" name="407" href="#407">407</a>     }
-<a class="jxr_linenumber" name="408" href="#408">408</a>   }
-<a class="jxr_linenumber" name="409" href="#409">409</a> 
-<a class="jxr_linenumber" name="410" href="#410">410</a>   @Override <strong class="jxr_keyword">public</strong> String toString() {
-<a class="jxr_linenumber" name="411" href="#411">411</a>     <strong class="jxr_keyword">return</strong> Objects.toStringHelper(<strong class="jxr_keyword">this</strong>)
-<a class="jxr_linenumber" name="412" href="#412">412</a>         .add(<span class="jxr_string">"info"</span>, metricsInfo).add(<span class="jxr_string">"tags"</span>, tags()).add(<span class="jxr_string">"metrics"</span>, metrics())
-<a class="jxr_linenumber" name="413" href="#413">413</a>         .toString();
-<a class="jxr_linenumber" name="414" href="#414">414</a>   }
-<a class="jxr_linenumber" name="415" href="#415">415</a> 
-<a class="jxr_linenumber" name="416" href="#416">416</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="417" href="#417">417</a> <em class="jxr_javadoccomment">   * Removes metric by name</em>
-<a class="jxr_linenumber" name="418" href="#418">418</a> <em class="jxr_javadoccomment">   * @param name name of the metric to remove</em>
-<a class="jxr_linenumber" name="419" href="#419">419</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="420" href="#420">420</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> removeMetric(String name) {
-<a class="jxr_linenumber" name="421" href="#421">421</a>     helper.removeObjectName(name);
-<a class="jxr_linenumber" name="422" href="#422">422</a>     metricsMap.remove(name);
-<a class="jxr_linenumber" name="423" href="#423">423</a>   }
-<a class="jxr_linenumber" name="424" href="#424">424</a> 
-<a class="jxr_linenumber" name="425" href="#425">425</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> removeHistogramMetrics(String baseName) {
-<a class="jxr_linenumber" name="426" href="#426">426</a>     <strong class="jxr_keyword">for</strong> (String suffix:histogramSuffixes) {
-<a class="jxr_linenumber" name="427" href="#427">427</a>       removeMetric(baseName+suffix);
-<a class="jxr_linenumber" name="428" href="#428">428</a>     }
-<a class="jxr_linenumber" name="429" href="#429">429</a>   }
-<a class="jxr_linenumber" name="430" href="#430">430</a> 
-<a class="jxr_linenumber" name="431" href="#431">431</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="432" href="#432">432</a> <em class="jxr_javadoccomment">   * Get a MetricMutableGaugeLong from the storage.  If it is not there atomically put it.</em>
-<a class="jxr_linenumber" name="433" href="#433">433</a> <em class="jxr_javadoccomment">   *</em>
-<a class="jxr_linenumber" name="434" href="#434">434</a> <em class="jxr_javadoccomment">   * @param gaugeName              name of the gauge to create or get.</em>
-<a class="jxr_linenumber" name="435" href="#435">435</a> <em class="jxr_javadoccomment">   * @param potentialStartingValue value of the new gauge if we have to create it.</em>
-<a class="jxr_linenumber" name="436" href="#436">436</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="437" href="#437">437</a>   <strong class="jxr_keyword">public</strong> MutableGaugeLong getLongGauge(String gaugeName, <strong class="jxr_keyword">long</strong> potentialStartingValue) {
-<a class="jxr_linenumber" name="438" href="#438">438</a>     <em class="jxr_comment">//Try and get the guage.</em>
-<a class="jxr_linenumber" name="439" href="#439">439</a>     MutableMetric metric = metricsMap.get(gaugeName);
-<a class="jxr_linenumber" name="440" href="#440">440</a> 
-<a class="jxr_linenumber" name="441" href="#441">441</a>     <em class="jxr_comment">//If it's not there then try and put a new one in the storage.</em>
-<a class="jxr_linenumber" name="442" href="#442">442</a>     <strong class="jxr_keyword">if</strong> (metric == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="443" href="#443">443</a> 
-<a class="jxr_linenumber" name="444" href="#444">444</a>       <em class="jxr_comment">//Create the potential new gauge.</em>
-<a class="jxr_linenumber" name="445" href="#445">445</a>       MutableGaugeLong newGauge = <strong class="jxr_keyword">new</strong> MutableGaugeLong(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(gaugeName, <span class="jxr_string">""</span>),
-<a class="jxr_linenumber" name="446" href="#446">446</a>               potentialStartingValue);
-<a class="jxr_linenumber" name="447" href="#447">447</a> 
-<a class="jxr_linenumber" name="448" href="#448">448</a>       <em class="jxr_comment">// Try and put the gauge in.  This is atomic.</em>
-<a class="jxr_linenumber" name="449" href="#449">449</a>       metric = metricsMap.putIfAbsent(gaugeName, newGauge);
-<a class="jxr_linenumber" name="450" href="#450">450</a> 
-<a class="jxr_linenumber" name="451" href="#451">451</a>       <em class="jxr_comment">//If the value we get back is null then the put was successful and we will return that.</em>
-<a class="jxr_linenumber" name="452" href="#452">452</a>       <em class="jxr_comment">//otherwise gaugeLong should contain the thing that was in before the put could be completed.</em>
-<a class="jxr_linenumber" name="453" href="#453">453</a>       <strong class="jxr_keyword">if</strong> (metric == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="454" href="#454">454</a>         <strong class="jxr_keyword">return</strong> newGauge;
-<a class="jxr_linenumber" name="455" href="#455">455</a>       }
-<a class="jxr_linenumber" name="456" href="#456">456</a>     }
-<a class="jxr_linenumber" name="457" href="#457">457</a> 
-<a class="jxr_linenumber" name="458" href="#458">458</a>     <strong class="jxr_keyword">if</strong> (!(metric instanceof MutableGaugeLong)) {
-<a class="jxr_linenumber" name="459" href="#459">459</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> MetricsException(<span class="jxr_string">"Metric already exists in registry for metric name: "</span> + gaugeName +
-<a class="jxr_linenumber" name="460" href="#460">460</a>               <span class="jxr_string">" and not of type MetricMutableGaugeLong"</span>);
-<a class="jxr_linenumber" name="461" href="#461">461</a>     }
-<a class="jxr_linenumber" name="462" href="#462">462</a> 
-<a class="jxr_linenumber" name="463" href="#463">463</a>     <strong class="jxr_keyword">return</strong> (MutableGaugeLong) metric;
-<a class="jxr_linenumber" name="464" href="#464">464</a>   }
-<a class="jxr_linenumber" name="465" href="#465">465</a> 
-<a class="jxr_linenumber" name="466" href="#466">466</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="467" href="#467">467</a> <em class="jxr_javadoccomment">   * Get a MetricMutableCounterLong from the storage.  If it is not there atomically put it.</em>
-<a class="jxr_linenumber" name="468" href="#468">468</a> <em class="jxr_javadoccomment">   *</em>
-<a class="jxr_linenumber" name="469" href="#469">469</a> <em class="jxr_javadoccomment">   * @param counterName            Name of the counter to get</em>
-<a class="jxr_linenumber" name="470" href="#470">470</a> <em class="jxr_javadoccomment">   * @param potentialStartingValue starting value if we have to create a new counter</em>
-<a class="jxr_linenumber" name="471" href="#471">471</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="472" href="#472">472</a>   <strong class="jxr_keyword">public</strong> MutableCounterLong getLongCounter(String counterName, <strong class="jxr_keyword">long</strong> potentialStartingValue) {
-<a class="jxr_linenumber" name="473" href="#473">473</a>     <em class="jxr_comment">//See getLongGauge for description on how this works.</em>
-<a class="jxr_linenumber" name="474" href="#474">474</a>     MutableMetric counter = metricsMap.get(counterName);
-<a class="jxr_linenumber" name="475" href="#475">475</a>     <strong class="jxr_keyword">if</strong> (counter == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="476" href="#476">476</a>       MutableCounterLong newCounter =
-<a class="jxr_linenumber" name="477" href="#477">477</a>               <strong class="jxr_keyword">new</strong> MutableCounterLong(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(counterName, <span class="jxr_string">""</span>), potentialStartingValue);
-<a class="jxr_linenumber" name="478" href="#478">478</a>       counter = metricsMap.putIfAbsent(counterName, newCounter);
-<a class="jxr_linenumber" name="479" href="#479">479</a>       <strong class="jxr_keyword">if</strong> (counter == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="480" href="#480">480</a>         <strong class="jxr_keyword">return</strong> newCounter;
-<a class="jxr_linenumber" name="481" href="#481">481</a>       }
-<a class="jxr_linenumber" name="482" href="#482">482</a>     }
-<a class="jxr_linenumber" name="483" href="#483">483</a> 
+<a class="jxr_linenumber" name="63" href="#63">63</a>        <span class="jxr_string">"_90th_percentile"</span>,
+<a class="jxr_linenumber" name="64" href="#64">64</a>        <span class="jxr_string">"_95th_percentile"</span>,
+<a class="jxr_linenumber" name="65" href="#65">65</a>        <span class="jxr_string">"_99th_percentile"</span>};
+<a class="jxr_linenumber" name="66" href="#66">66</a>  
+<a class="jxr_linenumber" name="67" href="#67">67</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">   * Construct the registry with a record name</em>
+<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">   * @param name  of the record of the metrics</em>
+<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>    <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a>(String name) {
+<a class="jxr_linenumber" name="72" href="#72">72</a>      <strong class="jxr_keyword">this</strong>(Interns.info(name,name));
+<a class="jxr_linenumber" name="73" href="#73">73</a>    }
+<a class="jxr_linenumber" name="74" href="#74">74</a>  
+<a class="jxr_linenumber" name="75" href="#75">75</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="76" href="#76">76</a>  <em class="jxr_javadoccomment">   * Construct the registry with a metadata object</em>
+<a class="jxr_linenumber" name="77" href="#77">77</a>  <em class="jxr_javadoccomment">   * @param info  the info object for the metrics record/group</em>
+<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="79" href="#79">79</a>    <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a>(MetricsInfo info) {
+<a class="jxr_linenumber" name="80" href="#80">80</a>      metricsInfo = info;
+<a class="jxr_linenumber" name="81" href="#81">81</a>    }
+<a class="jxr_linenumber" name="82" href="#82">82</a>  
+<a class="jxr_linenumber" name="83" href="#83">83</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment">   * @return the info object of the metrics registry</em>
+<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="86" href="#86">86</a>    <strong class="jxr_keyword">public</strong> MetricsInfo info() {
+<a class="jxr_linenumber" name="87" href="#87">87</a>      <strong class="jxr_keyword">return</strong> metricsInfo;
+<a class="jxr_linenumber" name="88" href="#88">88</a>    }
+<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">   * Get a metric by name</em>
+<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">   * @return the metric object</em>
+<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="95" href="#95">95</a>    <strong class="jxr_keyword">public</strong> MutableMetric get(String name) {
+<a class="jxr_linenumber" name="96" href="#96">96</a>      <strong class="jxr_keyword">return</strong> metricsMap.get(name);
+<a class="jxr_linenumber" name="97" href="#97">97</a>    }
+<a class="jxr_linenumber" name="98" href="#98">98</a>  
+<a class="jxr_linenumber" name="99" href="#99">99</a>    <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment">   * Get a tag by name</em>
+<a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment">   * @param name  of the tag</em>
+<a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment">   * @return the tag object</em>
+<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="104" href="#104">104</a>   <strong class="jxr_keyword">public</strong> MetricsTag getTag(String name) {
+<a class="jxr_linenumber" name="105" href="#105">105</a>     <strong class="jxr_keyword">return</strong> tagsMap.get(name);
+<a class="jxr_linenumber" name="106" href="#106">106</a>   }
+<a class="jxr_linenumber" name="107" href="#107">107</a> 
+<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> <em class="jxr_javadoccomment">   * Create a mutable integer counter</em>
+<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
+<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
+<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="115" href="#115">115</a>   <strong class="jxr_keyword">public</strong> MutableCounterInt newCounter(String name, String desc, <strong class="jxr_keyword">int</strong> iVal) {
+<a class="jxr_linenumber" name="116" href="#116">116</a>     <strong class="jxr_keyword">return</strong> newCounter(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
+<a class="jxr_linenumber" name="117" href="#117">117</a>   }
+<a class="jxr_linenumber" name="118" href="#118">118</a> 
+<a class="jxr_linenumber" name="119" href="#119">119</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment">   * Create a mutable integer counter</em>
+<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
+<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
+<a class="jxr_linenumber" name="124" href="#124">124</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="125" href="#125">125</a>   <strong class="jxr_keyword">public</strong> MutableCounterInt newCounter(MetricsInfo info, <strong class="jxr_keyword">int</strong> iVal) {
+<a class="jxr_linenumber" name="126" href="#126">126</a>     MutableCounterInt ret = <strong class="jxr_keyword">new</strong> MutableCounterInt(info, iVal);
+<a class="jxr_linenumber" name="127" href="#127">127</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableCounterInt.<strong class="jxr_keyword">class</strong>);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="131" href="#131">131</a> <em class="jxr_javadoccomment">   * Create a mutable long integer counter</em>
+<a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
+<a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
+<a class="jxr_linenumber" name="136" href="#136">136</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="137" href="#137">137</a>   <strong class="jxr_keyword">public</strong> MutableCounterLong newCounter(String name, String desc, <strong class="jxr_keyword">long</strong> iVal) {
+<a class="jxr_linenumber" name="138" href="#138">138</a>     <strong class="jxr_keyword">return</strong> newCounter(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment">   * Create a mutable long integer counter</em>
+<a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
+<a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment">   * @return a new counter object</em>
+<a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="147" href="#147">147</a>   <strong class="jxr_keyword">public</strong> MutableCounterLong newCounter(MetricsInfo info, <strong class="jxr_keyword">long</strong> iVal) {
+<a class="jxr_linenumber" name="148" href="#148">148</a>     MutableCounterLong ret = <strong class="jxr_keyword">new</strong> MutableCounterLong(info, iVal);
+<a class="jxr_linenumber" name="149" href="#149">149</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableCounterLong.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="150" href="#150">150</a>   }
+<a class="jxr_linenumber" name="151" href="#151">151</a> 
+<a class="jxr_linenumber" name="152" href="#152">152</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment">   * Create a mutable integer gauge</em>
+<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="155" href="#155">155</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
+<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
+<a class="jxr_linenumber" name="158" href="#158">158</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="159" href="#159">159</a>   <strong class="jxr_keyword">public</strong> MutableGaugeInt newGauge(String name, String desc, <strong class="jxr_keyword">int</strong> iVal) {
+<a class="jxr_linenumber" name="160" href="#160">160</a>     <strong class="jxr_keyword">return</strong> newGauge(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
+<a class="jxr_linenumber" name="161" href="#161">161</a>   }
+<a class="jxr_linenumber" name="162" href="#162">162</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">   * Create a mutable integer gauge</em>
+<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
+<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
+<a class="jxr_linenumber" name="167" href="#167">167</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="168" href="#168">168</a>   <strong class="jxr_keyword">public</strong> MutableGaugeInt newGauge(MetricsInfo info, <strong class="jxr_keyword">int</strong> iVal) {
+<a class="jxr_linenumber" name="169" href="#169">169</a>     MutableGaugeInt ret = <strong class="jxr_keyword">new</strong> MutableGaugeInt(info, iVal);
+<a class="jxr_linenumber" name="170" href="#170">170</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableGaugeInt.<strong class="jxr_keyword">class</strong>);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_javadoccomment">   * Create a mutable long integer gauge</em>
+<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
+<a class="jxr_linenumber" name="177" href="#177">177</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="178" href="#178">178</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
+<a class="jxr_linenumber" name="179" href="#179">179</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="180" href="#180">180</a>   <strong class="jxr_keyword">public</strong> MutableGaugeLong newGauge(String name, String desc, <strong class="jxr_keyword">long</strong> iVal) {
+<a class="jxr_linenumber" name="181" href="#181">181</a>     <strong class="jxr_keyword">return</strong> newGauge(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, desc), iVal);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_javadoccomment">   * Create a mutable long integer gauge</em>
+<a class="jxr_linenumber" name="186" href="#186">186</a> <em class="jxr_javadoccomment">   * @param info  metadata of the metric</em>
+<a class="jxr_linenumber" name="187" href="#187">187</a> <em class="jxr_javadoccomment">   * @param iVal  initial value</em>
+<a class="jxr_linenumber" name="188" href="#188">188</a> <em class="jxr_javadoccomment">   * @return a new gauge object</em>
+<a class="jxr_linenumber" name="189" href="#189">189</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="190" href="#190">190</a>   <strong class="jxr_keyword">public</strong> MutableGaugeLong newGauge(MetricsInfo info, <strong class="jxr_keyword">long</strong> iVal) {
+<a class="jxr_linenumber" name="191" href="#191">191</a>     MutableGaugeLong ret = <strong class="jxr_keyword">new</strong> MutableGaugeLong(info, iVal);
+<a class="jxr_linenumber" name="192" href="#192">192</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(info.name(), ret, MutableGaugeLong.<strong class="jxr_keyword">class</strong>);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="196" href="#196">196</a> <em class="jxr_javadoccomment">   * Create a mutable metric with stats</em>
+<a class="jxr_linenumber" name="197" href="#197">197</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="198" href="#198">198</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
+<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_javadoccomment">   * @param sampleName  of the metric (e.g., "Ops")</em>
+<a class="jxr_linenumber" name="200" href="#200">200</a> <em class="jxr_javadoccomment">   * @param valueName   of the metric (e.g., "Time" or "Latency")</em>
+<a class="jxr_linenumber" name="201" href="#201">201</a> <em class="jxr_javadoccomment">   * @param extended    produce extended stat (stdev, min/max etc.) if true.</em>
+<a class="jxr_linenumber" name="202" href="#202">202</a> <em class="jxr_javadoccomment">   * @return a new mutable stat metric object</em>
+<a class="jxr_linenumber" name="203" href="#203">203</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="204" href="#204">204</a>   <strong class="jxr_keyword">public</strong> MutableStat newStat(String name, String desc,
+<a class="jxr_linenumber" name="205" href="#205">205</a>       String sampleName, String valueName, <strong class="jxr_keyword">boolean</strong> extended) {
+<a class="jxr_linenumber" name="206" href="#206">206</a>     MutableStat ret =
+<a class="jxr_linenumber" name="207" href="#207">207</a>         <strong class="jxr_keyword">new</strong> MutableStat(name, desc, sampleName, valueName, extended);
+<a class="jxr_linenumber" name="208" href="#208">208</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, ret, MutableStat.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="209" href="#209">209</a>   }
+<a class="jxr_linenumber" name="210" href="#210">210</a> 
+<a class="jxr_linenumber" name="211" href="#211">211</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="212" href="#212">212</a> <em class="jxr_javadoccomment">   * Create a mutable metric with stats</em>
+<a class="jxr_linenumber" name="213" href="#213">213</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="214" href="#214">214</a> <em class="jxr_javadoccomment">   * @param desc  metric description</em>
+<a class="jxr_linenumber" name="215" href="#215">215</a> <em class="jxr_javadoccomment">   * @param sampleName  of the metric (e.g., "Ops")</em>
+<a class="jxr_linenumber" name="216" href="#216">216</a> <em class="jxr_javadoccomment">   * @param valueName   of the metric (e.g., "Time" or "Latency")</em>
+<a class="jxr_linenumber" name="217" href="#217">217</a> <em class="jxr_javadoccomment">   * @return a new mutable metric object</em>
+<a class="jxr_linenumber" name="218" href="#218">218</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="219" href="#219">219</a>   <strong class="jxr_keyword">public</strong> MutableStat newStat(String name, String desc,
+<a class="jxr_linenumber" name="220" href="#220">220</a>                              String sampleName, String valueName) {
+<a class="jxr_linenumber" name="221" href="#221">221</a>     <strong class="jxr_keyword">return</strong> newStat(name, desc, sampleName, valueName, false);
+<a class="jxr_linenumber" name="222" href="#222">222</a>   }
+<a class="jxr_linenumber" name="223" href="#223">223</a> 
+<a class="jxr_linenumber" name="224" href="#224">224</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="225" href="#225">225</a> <em class="jxr_javadoccomment">   * Create a mutable rate metric</em>
+<a class="jxr_linenumber" name="226" href="#226">226</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="227" href="#227">227</a> <em class="jxr_javadoccomment">   * @return a new mutable metric object</em>
+<a class="jxr_linenumber" name="228" href="#228">228</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="229" href="#229">229</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name) {
+<a class="jxr_linenumber" name="230" href="#230">230</a>     <strong class="jxr_keyword">return</strong> newRate(name, name, false);
+<a class="jxr_linenumber" name="231" href="#231">231</a>   }
+<a class="jxr_linenumber" name="232" href="#232">232</a> 
+<a class="jxr_linenumber" name="233" href="#233">233</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment">   * Create a mutable rate metric</em>
+<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment">   * @param description of the metric</em>
+<a class="jxr_linenumber" name="237" href="#237">237</a> <em class="jxr_javadoccomment">   * @return a new mutable rate metric object</em>
+<a class="jxr_linenumber" name="238" href="#238">238</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="239" href="#239">239</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name, String description) {
+<a class="jxr_linenumber" name="240" href="#240">240</a>     <strong class="jxr_keyword">return</strong> newRate(name, description, false);
+<a class="jxr_linenumber" name="241" href="#241">241</a>   }
+<a class="jxr_linenumber" name="242" href="#242">242</a> 
+<a class="jxr_linenumber" name="243" href="#243">243</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="244" href="#244">244</a> <em class="jxr_javadoccomment">   * Create a mutable rate metric (for throughput measurement)</em>
+<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_javadoccomment">   * @param desc  description</em>
+<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_javadoccomment">   * @param extended  produce extended stat (stdev/min/max etc.) if true</em>
+<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment">   * @return a new mutable rate metric object</em>
+<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="250" href="#250">250</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name, String desc, <strong class="jxr_keyword">boolean</strong> extended) {
+<a class="jxr_linenumber" name="251" href="#251">251</a>     <strong class="jxr_keyword">return</strong> newRate(name, desc, extended, <strong class="jxr_keyword">true</strong>);
+<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>   @InterfaceAudience.Private
+<a class="jxr_linenumber" name="255" href="#255">255</a>   <strong class="jxr_keyword">public</strong> MutableRate newRate(String name, String desc,
+<a class="jxr_linenumber" name="256" href="#256">256</a>       <strong class="jxr_keyword">boolean</strong> extended, <strong class="jxr_keyword">boolean</strong> returnExisting) {
+<a class="jxr_linenumber" name="257" href="#257">257</a>     <strong class="jxr_keyword">if</strong> (returnExisting) {
+<a class="jxr_linenumber" name="258" href="#258">258</a>       MutableMetric rate = metricsMap.get(name);
+<a class="jxr_linenumber" name="259" href="#259">259</a>       <strong class="jxr_keyword">if</strong> (rate != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="260" href="#260">260</a>         <strong class="jxr_keyword">if</strong> (rate instanceof MutableRate) <strong class="jxr_keyword">return</strong> (MutableRate) rate;
+<a class="jxr_linenumber" name="261" href="#261">261</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> MetricsException(<span class="jxr_string">"Unexpected metrics type "</span>+ rate.getClass()
+<a class="jxr_linenumber" name="262" href="#262">262</a>                                    +<span class="jxr_string">" for "</span>+ name);
+<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>     MutableRate ret = <strong class="jxr_keyword">new</strong> MutableRate(name, desc, extended);
+<a class="jxr_linenumber" name="266" href="#266">266</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, ret, MutableRate.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="267" href="#267">267</a>   }
+<a class="jxr_linenumber" name="268" href="#268">268</a> 
+<a class="jxr_linenumber" name="269" href="#269">269</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="270" href="#270">270</a> <em class="jxr_javadoccomment">   * Create a new histogram.</em>
+<a class="jxr_linenumber" name="271" href="#271">271</a> <em class="jxr_javadoccomment">   * @param name Name of the histogram.</em>
+<a class="jxr_linenumber" name="272" href="#272">272</a> <em class="jxr_javadoccomment">   * @return A new MutableHistogram</em>
+<a class="jxr_linenumber" name="273" href="#273">273</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="274" href="#274">274</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a> newHistogram(String name) {
+<a class="jxr_linenumber" name="275" href="#275">275</a>      <strong class="jxr_keyword">return</strong> newHistogram(name, <span class="jxr_string">""</span>);
+<a class="jxr_linenumber" name="276" href="#276">276</a>   }
+<a class="jxr_linenumber" name="277" href="#277">277</a> 
+<a class="jxr_linenumber" name="278" href="#278">278</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_javadoccomment">   * Create a new histogram.</em>
+<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment">   * @param name The name of the histogram</em>
+<a class="jxr_linenumber" name="281" href="#281">281</a> <em class="jxr_javadoccomment">   * @param desc The description of the data in the histogram.</em>
+<a class="jxr_linenumber" name="282" href="#282">282</a> <em class="jxr_javadoccomment">   * @return A new MutableHistogram</em>
+<a class="jxr_linenumber" name="283" href="#283">283</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="284" href="#284">284</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a> newHistogram(String name, String desc) {
+<a class="jxr_linenumber" name="285" href="#285">285</a>     <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a> histo = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MutableHistogram.html">MutableHistogram</a>(name, desc);
+<a class="jxr_linenumber" name="286" href="#286">286</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, histo, MutableHistogram.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="287" href="#287">287</a>   }
+<a class="jxr_linenumber" name="288" href="#288">288</a> 
+<a class="jxr_linenumber" name="289" href="#289">289</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment">   * Create a new MutableQuantile(A more accurate histogram).</em>
+<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment">   * @param name The name of the histogram</em>
+<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment">   * @return a new MutableQuantile</em>
+<a class="jxr_linenumber" name="293" href="#293">293</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="294" href="#294">294</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a> newQuantile(String name) {
+<a class="jxr_linenumber" name="295" href="#295">295</a>     <strong class="jxr_keyword">return</strong> newQuantile(name, <span class="jxr_string">""</span>);
+<a class="jxr_linenumber" name="296" href="#296">296</a>   }
+<a class="jxr_linenumber" name="297" href="#297">297</a> 
+<a class="jxr_linenumber" name="298" href="#298">298</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a> newQuantile(String name, String desc) {
+<a class="jxr_linenumber" name="299" href="#299">299</a>     <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a> histo = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/MetricMutableQuantiles.html">MetricMutableQuantiles</a>(name, desc, <span class="jxr_string">"Ops"</span>, <span class="jxr_string">""</span>, 60);
+<a class="jxr_linenumber" name="300" href="#300">300</a>     <strong class="jxr_keyword">return</strong> addNewMetricIfAbsent(name, histo, MetricMutableQuantiles.<strong class="jxr_keyword">class</strong>);
+<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>   <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> add(String name, MutableMetric metric) {
+<a class="jxr_linenumber" name="304" href="#304">304</a>     addNewMetricIfAbsent(name, metric, MutableMetric.<strong class="jxr_keyword">class</strong>);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="308" href="#308">308</a> <em class="jxr_javadoccomment">   * Add sample to a stat metric by name.</em>
+<a class="jxr_linenumber" name="309" href="#309">309</a> <em class="jxr_javadoccomment">   * @param name  of the metric</em>
+<a class="jxr_linenumber" name="310" href="#310">310</a> <em class="jxr_javadoccomment">   * @param value of the snapshot to add</em>
+<a class="jxr_linenumber" name="311" href="#311">311</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="312" href="#312">312</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> add(String name, <strong class="jxr_keyword">long</strong> value) {
+<a class="jxr_linenumber" name="313" href="#313">313</a>     MutableMetric m = metricsMap.get(name);
+<a class="jxr_linenumber" name="314" href="#314">314</a> 
+<a class="jxr_linenumber" name="315" href="#315">315</a>     <strong class="jxr_keyword">if</strong> (m != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="316" href="#316">316</a>       <strong class="jxr_keyword">if</strong> (m instanceof MutableStat) {
+<a class="jxr_linenumber" name="317" href="#317">317</a>         ((MutableStat) m).add(value);
+<a class="jxr_linenumber" name="318" href="#318">318</a>       }
+<a class="jxr_linenumber" name="319" href="#319">319</a>       <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="320" href="#320">320</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> MetricsException(<span class="jxr_string">"Unsupported add(value) for metric "</span>+ name);
+<a class="jxr_linenumber" name="321" href="#321">321</a>       }
+<a class="jxr_linenumber" name="322" href="#322">322</a>     }
+<a class="jxr_linenumber" name="323" href="#323">323</a>     <strong class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="324" href="#324">324</a>       metricsMap.put(name, newRate(name)); <em class="jxr_comment">// default is a rate metric</em>
+<a class="jxr_linenumber" name="325" href="#325">325</a>       add(name, value);
+<a class="jxr_linenumber" name="326" href="#326">326</a>     }
+<a class="jxr_linenumber" name="327" href="#327">327</a>   }
+<a class="jxr_linenumber" name="328" href="#328">328</a> 
+<a class="jxr_linenumber" name="329" href="#329">329</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="330" href="#330">330</a> <em class="jxr_javadoccomment">   * Set the metrics context tag</em>
+<a class="jxr_linenumber" name="331" href="#331">331</a> <em class="jxr_javadoccomment">   * @param name of the context</em>
+<a class="jxr_linenumber" name="332" href="#332">332</a> <em class="jxr_javadoccomment">   * @return the registry itself as a convenience</em>
+<a class="jxr_linenumber" name="333" href="#333">333</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="334" href="#334">334</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> setContext(String name) {
+<a class="jxr_linenumber" name="335" href="#335">335</a>     <strong class="jxr_keyword">return</strong> tag(MsInfo.Context, name, <strong class="jxr_keyword">true</strong>);
+<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>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="339" href="#339">339</a> <em class="jxr_javadoccomment">   * Add a tag to the metrics</em>
+<a class="jxr_linenumber" name="340" href="#340">340</a> <em class="jxr_javadoccomment">   * @param name  of the tag</em>
+<a class="jxr_linenumber" name="341" href="#341">341</a> <em class="jxr_javadoccomment">   * @param description of the tag</em>
+<a class="jxr_linenumber" name="342" href="#342">342</a> <em class="jxr_javadoccomment">   * @param value of the tag</em>
+<a class="jxr_linenumber" name="343" href="#343">343</a> <em class="jxr_javadoccomment">   * @return the registry (for keep adding tags)</em>
+<a class="jxr_linenumber" name="344" href="#344">344</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="345" href="#345">345</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> tag(String name, String description, String value) {
+<a class="jxr_linenumber" name="346" href="#346">346</a>     <strong class="jxr_keyword">return</strong> tag(name, description, value, false);
+<a class="jxr_linenumber" name="347" href="#347">347</a>   }
+<a class="jxr_linenumber" name="348" href="#348">348</a> 
+<a class="jxr_linenumber" name="349" href="#349">349</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="350" href="#350">350</a> <em class="jxr_javadoccomment">   * Add a tag to the metrics</em>
+<a class="jxr_linenumber" name="351" href="#351">351</a> <em class="jxr_javadoccomment">   * @param name  of the tag</em>
+<a class="jxr_linenumber" name="352" href="#352">352</a> <em class="jxr_javadoccomment">   * @param description of the tag</em>
+<a class="jxr_linenumber" name="353" href="#353">353</a> <em class="jxr_javadoccomment">   * @param value of the tag</em>
+<a class="jxr_linenumber" name="354" href="#354">354</a> <em class="jxr_javadoccomment">   * @param override  existing tag if true</em>
+<a class="jxr_linenumber" name="355" href="#355">355</a> <em class="jxr_javadoccomment">   * @return the registry (for keep adding tags)</em>
+<a class="jxr_linenumber" name="356" href="#356">356</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="357" href="#357">357</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../org/apache/hadoop/metrics2/lib/DynamicMetricsRegistry.html">DynamicMetricsRegistry</a> tag(String name, String description, String value,
+<a class="jxr_linenumber" name="358" href="#358">358</a>                              <strong class="jxr_keyword">boolean</strong> override) {
+<a class="jxr_linenumber" name="359" href="#359">359</a>     <strong class="jxr_keyword">return</strong> tag(<strong class="jxr_keyword">new</strong> MetricsInfoImpl(name, description), value, override);
+<a class="jxr_linenumber" name="360" href="#360">36

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