http://git-wip-us.apache.org/repos/asf/hbase-site/blob/539ad177/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.html
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diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.html
b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.html
index 2a5efbf..ae7d613 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.html
@@ -39,259 +39,261 @@
<span class="sourceLineNo">031</span>import
org.codehaus.jackson.map.ObjectMapper;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import
org.codehaus.jackson.map.SerializationConfig;<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
-<span class="sourceLineNo">034</span>import
com.yammer.metrics.core.Histogram;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import
com.yammer.metrics.core.MetricsRegistry;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import
com.yammer.metrics.stats.Snapshot;<a name="line.36"></a>
+<span class="sourceLineNo">034</span>import com.codahale.metrics.Histogram;<a
name="line.34"></a>
+<span class="sourceLineNo">035</span>import
com.codahale.metrics.MetricRegistry;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import com.codahale.metrics.Snapshot;<a
name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
-<span class="sourceLineNo">038</span>/**<a name="line.38"></a>
-<span class="sourceLineNo">039</span> * Utilty for aggregating counts in
CachedBlocks and toString/toJSON CachedBlocks and BlockCaches.<a
name="line.39"></a>
-<span class="sourceLineNo">040</span> * No attempt has been made at making
this thread safe.<a name="line.40"></a>
-<span class="sourceLineNo">041</span> */<a name="line.41"></a>
-<span class="sourceLineNo">042</span>@InterfaceAudience.Private<a
name="line.42"></a>
-<span class="sourceLineNo">043</span>public class BlockCacheUtil {<a
name="line.43"></a>
-<span class="sourceLineNo">044</span> /**<a name="line.44"></a>
-<span class="sourceLineNo">045</span> * Needed making histograms.<a
name="line.45"></a>
-<span class="sourceLineNo">046</span> */<a name="line.46"></a>
-<span class="sourceLineNo">047</span> private static final MetricsRegistry
METRICS = new MetricsRegistry();<a name="line.47"></a>
-<span class="sourceLineNo">048</span><a name="line.48"></a>
-<span class="sourceLineNo">049</span> /**<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * Needed generating JSON.<a
name="line.50"></a>
-<span class="sourceLineNo">051</span> */<a name="line.51"></a>
-<span class="sourceLineNo">052</span> private static final ObjectMapper
MAPPER = new ObjectMapper();<a name="line.52"></a>
-<span class="sourceLineNo">053</span> static {<a name="line.53"></a>
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MAPPER.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);<a
name="line.54"></a>
-<span class="sourceLineNo">055</span>
MAPPER.configure(SerializationConfig.Feature.FLUSH_AFTER_WRITE_VALUE, true);<a
name="line.55"></a>
-<span class="sourceLineNo">056</span>
MAPPER.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);<a
name="line.56"></a>
-<span class="sourceLineNo">057</span> }<a name="line.57"></a>
-<span class="sourceLineNo">058</span><a name="line.58"></a>
-<span class="sourceLineNo">059</span> /**<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * @param cb<a name="line.60"></a>
-<span class="sourceLineNo">061</span> * @return The block content as
String.<a name="line.61"></a>
-<span class="sourceLineNo">062</span> */<a name="line.62"></a>
-<span class="sourceLineNo">063</span> public static String toString(final
CachedBlock cb, final long now) {<a name="line.63"></a>
-<span class="sourceLineNo">064</span> return "filename=" + cb.getFilename()
+ ", " + toStringMinusFileName(cb, now);<a name="line.64"></a>
-<span class="sourceLineNo">065</span> }<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span> /**<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * Little data structure to hold counts
for a file.<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * Used doing a toJSON.<a
name="line.69"></a>
-<span class="sourceLineNo">070</span> */<a name="line.70"></a>
-<span class="sourceLineNo">071</span> static class CachedBlockCountsPerFile
{<a name="line.71"></a>
-<span class="sourceLineNo">072</span> private int count = 0;<a
name="line.72"></a>
-<span class="sourceLineNo">073</span> private long size = 0;<a
name="line.73"></a>
-<span class="sourceLineNo">074</span> private int countData = 0;<a
name="line.74"></a>
-<span class="sourceLineNo">075</span> private long sizeData = 0;<a
name="line.75"></a>
-<span class="sourceLineNo">076</span> private final String filename;<a
name="line.76"></a>
-<span class="sourceLineNo">077</span><a name="line.77"></a>
-<span class="sourceLineNo">078</span> CachedBlockCountsPerFile(final String
filename) {<a name="line.78"></a>
-<span class="sourceLineNo">079</span> this.filename = filename;<a
name="line.79"></a>
-<span class="sourceLineNo">080</span> }<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span> public int getCount() {<a
name="line.82"></a>
-<span class="sourceLineNo">083</span> return count;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> }<a name="line.84"></a>
-<span class="sourceLineNo">085</span><a name="line.85"></a>
-<span class="sourceLineNo">086</span> public long getSize() {<a
name="line.86"></a>
-<span class="sourceLineNo">087</span> return size;<a name="line.87"></a>
-<span class="sourceLineNo">088</span> }<a name="line.88"></a>
-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span> public int getCountData() {<a
name="line.90"></a>
-<span class="sourceLineNo">091</span> return countData;<a
name="line.91"></a>
-<span class="sourceLineNo">092</span> }<a name="line.92"></a>
-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span> public long getSizeData() {<a
name="line.94"></a>
-<span class="sourceLineNo">095</span> return sizeData;<a
name="line.95"></a>
-<span class="sourceLineNo">096</span> }<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span> public String getFilename() {<a
name="line.98"></a>
-<span class="sourceLineNo">099</span> return filename;<a
name="line.99"></a>
-<span class="sourceLineNo">100</span> }<a name="line.100"></a>
-<span class="sourceLineNo">101</span> }<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span> /**<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * @param filename<a
name="line.104"></a>
-<span class="sourceLineNo">105</span> * @param blocks<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * @return A JSON String of
<code>filename</code> and counts of
<code>blocks</code><a name="line.106"></a>
-<span class="sourceLineNo">107</span> * @throws JsonGenerationException<a
name="line.107"></a>
-<span class="sourceLineNo">108</span> * @throws JsonMappingException<a
name="line.108"></a>
-<span class="sourceLineNo">109</span> * @throws IOException<a
name="line.109"></a>
-<span class="sourceLineNo">110</span> */<a name="line.110"></a>
-<span class="sourceLineNo">111</span> public static String toJSON(final
String filename, final NavigableSet<CachedBlock> blocks)<a
name="line.111"></a>
-<span class="sourceLineNo">112</span> throws JsonGenerationException,
JsonMappingException, IOException {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> CachedBlockCountsPerFile counts = new
CachedBlockCountsPerFile(filename);<a name="line.113"></a>
-<span class="sourceLineNo">114</span> for (CachedBlock cb: blocks) {<a
name="line.114"></a>
-<span class="sourceLineNo">115</span> counts.count++;<a
name="line.115"></a>
-<span class="sourceLineNo">116</span> counts.size += cb.getSize();<a
name="line.116"></a>
-<span class="sourceLineNo">117</span> BlockType bt = cb.getBlockType();<a
name="line.117"></a>
-<span class="sourceLineNo">118</span> if (bt != null &&
bt.isData()) {<a name="line.118"></a>
-<span class="sourceLineNo">119</span> counts.countData++;<a
name="line.119"></a>
-<span class="sourceLineNo">120</span> counts.sizeData +=
cb.getSize();<a name="line.120"></a>
-<span class="sourceLineNo">121</span> }<a name="line.121"></a>
-<span class="sourceLineNo">122</span> }<a name="line.122"></a>
-<span class="sourceLineNo">123</span> return
MAPPER.writeValueAsString(counts);<a name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> /**<a name="line.126"></a>
-<span class="sourceLineNo">127</span> * @param cbsbf<a name="line.127"></a>
-<span class="sourceLineNo">128</span> * @return JSON string of
<code>cbsf</code> aggregated<a name="line.128"></a>
-<span class="sourceLineNo">129</span> * @throws JsonGenerationException<a
name="line.129"></a>
-<span class="sourceLineNo">130</span> * @throws JsonMappingException<a
name="line.130"></a>
-<span class="sourceLineNo">131</span> * @throws IOException<a
name="line.131"></a>
-<span class="sourceLineNo">132</span> */<a name="line.132"></a>
-<span class="sourceLineNo">133</span> public static String toJSON(final
CachedBlocksByFile cbsbf)<a name="line.133"></a>
-<span class="sourceLineNo">134</span> throws JsonGenerationException,
JsonMappingException, IOException {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> return
MAPPER.writeValueAsString(cbsbf);<a name="line.135"></a>
-<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span><a name="line.137"></a>
-<span class="sourceLineNo">138</span> /**<a name="line.138"></a>
-<span class="sourceLineNo">139</span> * @param bc<a name="line.139"></a>
-<span class="sourceLineNo">140</span> * @return JSON string of
<code>bc</code> content.<a name="line.140"></a>
-<span class="sourceLineNo">141</span> * @throws JsonGenerationException<a
name="line.141"></a>
-<span class="sourceLineNo">142</span> * @throws JsonMappingException<a
name="line.142"></a>
-<span class="sourceLineNo">143</span> * @throws IOException<a
name="line.143"></a>
-<span class="sourceLineNo">144</span> */<a name="line.144"></a>
-<span class="sourceLineNo">145</span> public static String toJSON(final
BlockCache bc)<a name="line.145"></a>
-<span class="sourceLineNo">146</span> throws JsonGenerationException,
JsonMappingException, IOException {<a name="line.146"></a>
-<span class="sourceLineNo">147</span> return
MAPPER.writeValueAsString(bc);<a name="line.147"></a>
-<span class="sourceLineNo">148</span> }<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
-<span class="sourceLineNo">150</span> /**<a name="line.150"></a>
-<span class="sourceLineNo">151</span> * @param cb<a name="line.151"></a>
-<span class="sourceLineNo">152</span> * @return The block content of
<code>bc</code> as a String minus the filename.<a
name="line.152"></a>
-<span class="sourceLineNo">153</span> */<a name="line.153"></a>
-<span class="sourceLineNo">154</span> public static String
toStringMinusFileName(final CachedBlock cb, final long now) {<a
name="line.154"></a>
-<span class="sourceLineNo">155</span> return "offset=" + cb.getOffset() +<a
name="line.155"></a>
-<span class="sourceLineNo">156</span> ", size=" + cb.getSize() +<a
name="line.156"></a>
-<span class="sourceLineNo">157</span> ", age=" + (now -
cb.getCachedTime()) +<a name="line.157"></a>
-<span class="sourceLineNo">158</span> ", type=" + cb.getBlockType() +<a
name="line.158"></a>
-<span class="sourceLineNo">159</span> ", priority=" +
cb.getBlockPriority();<a name="line.159"></a>
-<span class="sourceLineNo">160</span> }<a name="line.160"></a>
-<span class="sourceLineNo">161</span><a name="line.161"></a>
-<span class="sourceLineNo">162</span> /**<a name="line.162"></a>
-<span class="sourceLineNo">163</span> * Get a {@link CachedBlocksByFile}
instance and load it up by iterating content in<a name="line.163"></a>
-<span class="sourceLineNo">164</span> * {@link BlockCache}.<a
name="line.164"></a>
-<span class="sourceLineNo">165</span> * @param conf Used to read
configurations<a name="line.165"></a>
-<span class="sourceLineNo">166</span> * @param bc Block Cache to iterate.<a
name="line.166"></a>
-<span class="sourceLineNo">167</span> * @return Laoded up instance of
CachedBlocksByFile<a name="line.167"></a>
-<span class="sourceLineNo">168</span> */<a name="line.168"></a>
-<span class="sourceLineNo">169</span> public static CachedBlocksByFile
getLoadedCachedBlocksByFile(final Configuration conf,<a name="line.169"></a>
-<span class="sourceLineNo">170</span> final BlockCache bc) {<a
name="line.170"></a>
-<span class="sourceLineNo">171</span> CachedBlocksByFile cbsbf = new
CachedBlocksByFile(conf);<a name="line.171"></a>
-<span class="sourceLineNo">172</span> for (CachedBlock cb: bc) {<a
name="line.172"></a>
-<span class="sourceLineNo">173</span> if (cbsbf.update(cb)) break;<a
name="line.173"></a>
-<span class="sourceLineNo">174</span> }<a name="line.174"></a>
-<span class="sourceLineNo">175</span> return cbsbf;<a name="line.175"></a>
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-<span class="sourceLineNo">177</span><a name="line.177"></a>
-<span class="sourceLineNo">178</span> /**<a name="line.178"></a>
-<span class="sourceLineNo">179</span> * Use one of these to keep a running
account of cached blocks by file. Throw it away when done.<a
name="line.179"></a>
-<span class="sourceLineNo">180</span> * This is different than metrics in
that it is stats on current state of a cache.<a name="line.180"></a>
-<span class="sourceLineNo">181</span> * See getLoadedCachedBlocksByFile<a
name="line.181"></a>
-<span class="sourceLineNo">182</span> */<a name="line.182"></a>
-<span class="sourceLineNo">183</span>
@JsonIgnoreProperties({"cachedBlockStatsByFile"})<a name="line.183"></a>
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{<a name="line.184"></a>
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name="line.185"></a>
-<span class="sourceLineNo">186</span> private int dataBlockCount;<a
name="line.186"></a>
-<span class="sourceLineNo">187</span> private long size;<a
name="line.187"></a>
-<span class="sourceLineNo">188</span> private long dataSize;<a
name="line.188"></a>
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System.nanoTime();<a name="line.189"></a>
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name="line.190"></a>
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100000;<a name="line.191"></a>
-<span class="sourceLineNo">192</span> <a name="line.192"></a>
-<span class="sourceLineNo">193</span> CachedBlocksByFile() {<a
name="line.193"></a>
-<span class="sourceLineNo">194</span> this(null);<a name="line.194"></a>
-<span class="sourceLineNo">195</span> }<a name="line.195"></a>
-<span class="sourceLineNo">196</span><a name="line.196"></a>
-<span class="sourceLineNo">197</span> CachedBlocksByFile(final
Configuration c) {<a name="line.197"></a>
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DEFAULT_MAX:<a name="line.198"></a>
-<span class="sourceLineNo">199</span>
c.getInt("hbase.ui.blockcache.by.file.max", DEFAULT_MAX);<a name="line.199"></a>
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-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span> /**<a name="line.202"></a>
-<span class="sourceLineNo">203</span> * Map by filename. use concurent
utils because we want our Map and contained blocks sorted.<a
name="line.203"></a>
-<span class="sourceLineNo">204</span> */<a name="line.204"></a>
-<span class="sourceLineNo">205</span> private NavigableMap<String,
NavigableSet<CachedBlock>> cachedBlockByFile =<a name="line.205"></a>
-<span class="sourceLineNo">206</span> new
ConcurrentSkipListMap<String, NavigableSet<CachedBlock>>();<a
name="line.206"></a>
-<span class="sourceLineNo">207</span> Histogram age =
METRICS.newHistogram(CachedBlocksByFile.class, "age");<a name="line.207"></a>
-<span class="sourceLineNo">208</span><a name="line.208"></a>
-<span class="sourceLineNo">209</span> /**<a name="line.209"></a>
-<span class="sourceLineNo">210</span> * @param cb<a name="line.210"></a>
-<span class="sourceLineNo">211</span> * @return True if full.... if we
won't be adding any more.<a name="line.211"></a>
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-<span class="sourceLineNo">213</span> public boolean update(final
CachedBlock cb) {<a name="line.213"></a>
-<span class="sourceLineNo">214</span> if (isFull()) return true;<a
name="line.214"></a>
-<span class="sourceLineNo">215</span> NavigableSet<CachedBlock> set
= this.cachedBlockByFile.get(cb.getFilename());<a name="line.215"></a>
-<span class="sourceLineNo">216</span> if (set == null) {<a
name="line.216"></a>
-<span class="sourceLineNo">217</span> set = new
ConcurrentSkipListSet<CachedBlock>();<a name="line.217"></a>
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this.cachedBlockByFile.put(cb.getFilename(), set);<a name="line.218"></a>
-<span class="sourceLineNo">219</span> }<a name="line.219"></a>
-<span class="sourceLineNo">220</span> set.add(cb);<a name="line.220"></a>
-<span class="sourceLineNo">221</span> this.size += cb.getSize();<a
name="line.221"></a>
-<span class="sourceLineNo">222</span> this.count++;<a name="line.222"></a>
-<span class="sourceLineNo">223</span> BlockType bt = cb.getBlockType();<a
name="line.223"></a>
-<span class="sourceLineNo">224</span> if (bt != null &&
bt.isData()) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> this.dataBlockCount++;<a
name="line.225"></a>
-<span class="sourceLineNo">226</span> this.dataSize += cb.getSize();<a
name="line.226"></a>
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-<span class="sourceLineNo">228</span> long age = this.now -
cb.getCachedTime();<a name="line.228"></a>
-<span class="sourceLineNo">229</span> this.age.update(age);<a
name="line.229"></a>
-<span class="sourceLineNo">230</span> return false;<a name="line.230"></a>
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are more items in the cache but we only loaded up<a name="line.234"></a>
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<code>hbase.ui.blockcache.by.file.max</code><a name="line.235"></a>
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name="line.238"></a>
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name="line.239"></a>
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-<span class="sourceLineNo">241</span> <a name="line.241"></a>
-<span class="sourceLineNo">242</span> public NavigableMap<String,
NavigableSet<CachedBlock>> getCachedBlockStatsByFile() {<a
name="line.242"></a>
-<span class="sourceLineNo">243</span> return this.cachedBlockByFile;<a
name="line.243"></a>
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-<span class="sourceLineNo">245</span><a name="line.245"></a>
-<span class="sourceLineNo">246</span> /**<a name="line.246"></a>
-<span class="sourceLineNo">247</span> * @return count of blocks in the
cache<a name="line.247"></a>
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-<span class="sourceLineNo">249</span> public int getCount() {<a
name="line.249"></a>
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-<span class="sourceLineNo">253</span> public int getDataCount() {<a
name="line.253"></a>
-<span class="sourceLineNo">254</span> return dataBlockCount;<a
name="line.254"></a>
-<span class="sourceLineNo">255</span> }<a name="line.255"></a>
-<span class="sourceLineNo">256</span><a name="line.256"></a>
-<span class="sourceLineNo">257</span> /**<a name="line.257"></a>
-<span class="sourceLineNo">258</span> * @return size of blocks in the
cache<a name="line.258"></a>
-<span class="sourceLineNo">259</span> */<a name="line.259"></a>
-<span class="sourceLineNo">260</span> public long getSize() {<a
name="line.260"></a>
-<span class="sourceLineNo">261</span> return size;<a name="line.261"></a>
-<span class="sourceLineNo">262</span> }<a name="line.262"></a>
-<span class="sourceLineNo">263</span><a name="line.263"></a>
-<span class="sourceLineNo">264</span> /**<a name="line.264"></a>
-<span class="sourceLineNo">265</span> * @return Size of data.<a
name="line.265"></a>
-<span class="sourceLineNo">266</span> */<a name="line.266"></a>
-<span class="sourceLineNo">267</span> public long getDataSize() {<a
name="line.267"></a>
-<span class="sourceLineNo">268</span> return dataSize;<a
name="line.268"></a>
-<span class="sourceLineNo">269</span> }<a name="line.269"></a>
-<span class="sourceLineNo">270</span><a name="line.270"></a>
-<span class="sourceLineNo">271</span> public AgeSnapshot
getAgeInCacheSnapshot() {<a name="line.271"></a>
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this.age.getSnapshot();<a name="line.277"></a>
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dataBlockCount=" + this.dataBlockCount + ", size=" + size +<a
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-<span class="sourceLineNo">279</span> ", dataSize=" + getDataSize()
+<a name="line.279"></a>
-<span class="sourceLineNo">280</span> ", mean age=" + this.age.mean()
+ ", stddev age=" + this.age.stdDev() +<a name="line.280"></a>
-<span class="sourceLineNo">281</span> ", min age=" + this.age.min() +
", max age=" + this.age.max() +<a name="line.281"></a>
-<span class="sourceLineNo">282</span> ", 95th percentile age=" +
snapshot.get95thPercentile() +<a name="line.282"></a>
-<span class="sourceLineNo">283</span> ", 99th percentile age=" +
snapshot.get99thPercentile();<a name="line.283"></a>
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-<span class="sourceLineNo">285</span> }<a name="line.285"></a>
-<span class="sourceLineNo">286</span>}<a name="line.286"></a>
+<span class="sourceLineNo">038</span>import static
com.codahale.metrics.MetricRegistry.name;<a name="line.38"></a>
+<span class="sourceLineNo">039</span><a name="line.39"></a>
+<span class="sourceLineNo">040</span>/**<a name="line.40"></a>
+<span class="sourceLineNo">041</span> * Utilty for aggregating counts in
CachedBlocks and toString/toJSON CachedBlocks and BlockCaches.<a
name="line.41"></a>
+<span class="sourceLineNo">042</span> * No attempt has been made at making
this thread safe.<a name="line.42"></a>
+<span class="sourceLineNo">043</span> */<a name="line.43"></a>
+<span class="sourceLineNo">044</span>@InterfaceAudience.Private<a
name="line.44"></a>
+<span class="sourceLineNo">045</span>public class BlockCacheUtil {<a
name="line.45"></a>
+<span class="sourceLineNo">046</span> /**<a name="line.46"></a>
+<span class="sourceLineNo">047</span> * Needed making histograms.<a
name="line.47"></a>
+<span class="sourceLineNo">048</span> */<a name="line.48"></a>
+<span class="sourceLineNo">049</span> private static final MetricRegistry
METRICS = new MetricRegistry();<a name="line.49"></a>
+<span class="sourceLineNo">050</span><a name="line.50"></a>
+<span class="sourceLineNo">051</span> /**<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * Needed generating JSON.<a
name="line.52"></a>
+<span class="sourceLineNo">053</span> */<a name="line.53"></a>
+<span class="sourceLineNo">054</span> private static final ObjectMapper
MAPPER = new ObjectMapper();<a name="line.54"></a>
+<span class="sourceLineNo">055</span> static {<a name="line.55"></a>
+<span class="sourceLineNo">056</span>
MAPPER.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);<a
name="line.56"></a>
+<span class="sourceLineNo">057</span>
MAPPER.configure(SerializationConfig.Feature.FLUSH_AFTER_WRITE_VALUE, true);<a
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+<span class="sourceLineNo">058</span>
MAPPER.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);<a
name="line.58"></a>
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+<span class="sourceLineNo">060</span><a name="line.60"></a>
+<span class="sourceLineNo">061</span> /**<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * @param cb<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * @return The block content as
String.<a name="line.63"></a>
+<span class="sourceLineNo">064</span> */<a name="line.64"></a>
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CachedBlock cb, final long now) {<a name="line.65"></a>
+<span class="sourceLineNo">066</span> return "filename=" + cb.getFilename()
+ ", " + toStringMinusFileName(cb, now);<a name="line.66"></a>
+<span class="sourceLineNo">067</span> }<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span> /**<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * Little data structure to hold counts
for a file.<a name="line.70"></a>
+<span class="sourceLineNo">071</span> * Used doing a toJSON.<a
name="line.71"></a>
+<span class="sourceLineNo">072</span> */<a name="line.72"></a>
+<span class="sourceLineNo">073</span> static class CachedBlockCountsPerFile
{<a name="line.73"></a>
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name="line.74"></a>
+<span class="sourceLineNo">075</span> private long size = 0;<a
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+<span class="sourceLineNo">076</span> private int countData = 0;<a
name="line.76"></a>
+<span class="sourceLineNo">077</span> private long sizeData = 0;<a
name="line.77"></a>
+<span class="sourceLineNo">078</span> private final String filename;<a
name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span> CachedBlockCountsPerFile(final String
filename) {<a name="line.80"></a>
+<span class="sourceLineNo">081</span> this.filename = filename;<a
name="line.81"></a>
+<span class="sourceLineNo">082</span> }<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span> public int getCount() {<a
name="line.84"></a>
+<span class="sourceLineNo">085</span> return count;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> }<a name="line.86"></a>
+<span class="sourceLineNo">087</span><a name="line.87"></a>
+<span class="sourceLineNo">088</span> public long getSize() {<a
name="line.88"></a>
+<span class="sourceLineNo">089</span> return size;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> public int getCountData() {<a
name="line.92"></a>
+<span class="sourceLineNo">093</span> return countData;<a
name="line.93"></a>
+<span class="sourceLineNo">094</span> }<a name="line.94"></a>
+<span class="sourceLineNo">095</span><a name="line.95"></a>
+<span class="sourceLineNo">096</span> public long getSizeData() {<a
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+<span class="sourceLineNo">097</span> return sizeData;<a
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+<span class="sourceLineNo">098</span> }<a name="line.98"></a>
+<span class="sourceLineNo">099</span><a name="line.99"></a>
+<span class="sourceLineNo">100</span> public String getFilename() {<a
name="line.100"></a>
+<span class="sourceLineNo">101</span> return filename;<a
name="line.101"></a>
+<span class="sourceLineNo">102</span> }<a name="line.102"></a>
+<span class="sourceLineNo">103</span> }<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span> /**<a name="line.105"></a>
+<span class="sourceLineNo">106</span> * @param filename<a
name="line.106"></a>
+<span class="sourceLineNo">107</span> * @param blocks<a name="line.107"></a>
+<span class="sourceLineNo">108</span> * @return A JSON String of
<code>filename</code> and counts of
<code>blocks</code><a name="line.108"></a>
+<span class="sourceLineNo">109</span> * @throws JsonGenerationException<a
name="line.109"></a>
+<span class="sourceLineNo">110</span> * @throws JsonMappingException<a
name="line.110"></a>
+<span class="sourceLineNo">111</span> * @throws IOException<a
name="line.111"></a>
+<span class="sourceLineNo">112</span> */<a name="line.112"></a>
+<span class="sourceLineNo">113</span> public static String toJSON(final
String filename, final NavigableSet<CachedBlock> blocks)<a
name="line.113"></a>
+<span class="sourceLineNo">114</span> throws JsonGenerationException,
JsonMappingException, IOException {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> CachedBlockCountsPerFile counts = new
CachedBlockCountsPerFile(filename);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> for (CachedBlock cb: blocks) {<a
name="line.116"></a>
+<span class="sourceLineNo">117</span> counts.count++;<a
name="line.117"></a>
+<span class="sourceLineNo">118</span> counts.size += cb.getSize();<a
name="line.118"></a>
+<span class="sourceLineNo">119</span> BlockType bt = cb.getBlockType();<a
name="line.119"></a>
+<span class="sourceLineNo">120</span> if (bt != null &&
bt.isData()) {<a name="line.120"></a>
+<span class="sourceLineNo">121</span> counts.countData++;<a
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+<span class="sourceLineNo">122</span> counts.sizeData +=
cb.getSize();<a name="line.122"></a>
+<span class="sourceLineNo">123</span> }<a name="line.123"></a>
+<span class="sourceLineNo">124</span> }<a name="line.124"></a>
+<span class="sourceLineNo">125</span> return
MAPPER.writeValueAsString(counts);<a name="line.125"></a>
+<span class="sourceLineNo">126</span> }<a name="line.126"></a>
+<span class="sourceLineNo">127</span><a name="line.127"></a>
+<span class="sourceLineNo">128</span> /**<a name="line.128"></a>
+<span class="sourceLineNo">129</span> * @param cbsbf<a name="line.129"></a>
+<span class="sourceLineNo">130</span> * @return JSON string of
<code>cbsf</code> aggregated<a name="line.130"></a>
+<span class="sourceLineNo">131</span> * @throws JsonGenerationException<a
name="line.131"></a>
+<span class="sourceLineNo">132</span> * @throws JsonMappingException<a
name="line.132"></a>
+<span class="sourceLineNo">133</span> * @throws IOException<a
name="line.133"></a>
+<span class="sourceLineNo">134</span> */<a name="line.134"></a>
+<span class="sourceLineNo">135</span> public static String toJSON(final
CachedBlocksByFile cbsbf)<a name="line.135"></a>
+<span class="sourceLineNo">136</span> throws JsonGenerationException,
JsonMappingException, IOException {<a name="line.136"></a>
+<span class="sourceLineNo">137</span> return
MAPPER.writeValueAsString(cbsbf);<a name="line.137"></a>
+<span class="sourceLineNo">138</span> }<a name="line.138"></a>
+<span class="sourceLineNo">139</span><a name="line.139"></a>
+<span class="sourceLineNo">140</span> /**<a name="line.140"></a>
+<span class="sourceLineNo">141</span> * @param bc<a name="line.141"></a>
+<span class="sourceLineNo">142</span> * @return JSON string of
<code>bc</code> content.<a name="line.142"></a>
+<span class="sourceLineNo">143</span> * @throws JsonGenerationException<a
name="line.143"></a>
+<span class="sourceLineNo">144</span> * @throws JsonMappingException<a
name="line.144"></a>
+<span class="sourceLineNo">145</span> * @throws IOException<a
name="line.145"></a>
+<span class="sourceLineNo">146</span> */<a name="line.146"></a>
+<span class="sourceLineNo">147</span> public static String toJSON(final
BlockCache bc)<a name="line.147"></a>
+<span class="sourceLineNo">148</span> throws JsonGenerationException,
JsonMappingException, IOException {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> return
MAPPER.writeValueAsString(bc);<a name="line.149"></a>
+<span class="sourceLineNo">150</span> }<a name="line.150"></a>
+<span class="sourceLineNo">151</span><a name="line.151"></a>
+<span class="sourceLineNo">152</span> /**<a name="line.152"></a>
+<span class="sourceLineNo">153</span> * @param cb<a name="line.153"></a>
+<span class="sourceLineNo">154</span> * @return The block content of
<code>bc</code> as a String minus the filename.<a
name="line.154"></a>
+<span class="sourceLineNo">155</span> */<a name="line.155"></a>
+<span class="sourceLineNo">156</span> public static String
toStringMinusFileName(final CachedBlock cb, final long now) {<a
name="line.156"></a>
+<span class="sourceLineNo">157</span> return "offset=" + cb.getOffset() +<a
name="line.157"></a>
+<span class="sourceLineNo">158</span> ", size=" + cb.getSize() +<a
name="line.158"></a>
+<span class="sourceLineNo">159</span> ", age=" + (now -
cb.getCachedTime()) +<a name="line.159"></a>
+<span class="sourceLineNo">160</span> ", type=" + cb.getBlockType() +<a
name="line.160"></a>
+<span class="sourceLineNo">161</span> ", priority=" +
cb.getBlockPriority();<a name="line.161"></a>
+<span class="sourceLineNo">162</span> }<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> /**<a name="line.164"></a>
+<span class="sourceLineNo">165</span> * Get a {@link CachedBlocksByFile}
instance and load it up by iterating content in<a name="line.165"></a>
+<span class="sourceLineNo">166</span> * {@link BlockCache}.<a
name="line.166"></a>
+<span class="sourceLineNo">167</span> * @param conf Used to read
configurations<a name="line.167"></a>
+<span class="sourceLineNo">168</span> * @param bc Block Cache to iterate.<a
name="line.168"></a>
+<span class="sourceLineNo">169</span> * @return Laoded up instance of
CachedBlocksByFile<a name="line.169"></a>
+<span class="sourceLineNo">170</span> */<a name="line.170"></a>
+<span class="sourceLineNo">171</span> public static CachedBlocksByFile
getLoadedCachedBlocksByFile(final Configuration conf,<a name="line.171"></a>
+<span class="sourceLineNo">172</span> final BlockCache bc) {<a
name="line.172"></a>
+<span class="sourceLineNo">173</span> CachedBlocksByFile cbsbf = new
CachedBlocksByFile(conf);<a name="line.173"></a>
+<span class="sourceLineNo">174</span> for (CachedBlock cb: bc) {<a
name="line.174"></a>
+<span class="sourceLineNo">175</span> if (cbsbf.update(cb)) break;<a
name="line.175"></a>
+<span class="sourceLineNo">176</span> }<a name="line.176"></a>
+<span class="sourceLineNo">177</span> return cbsbf;<a name="line.177"></a>
+<span class="sourceLineNo">178</span> }<a name="line.178"></a>
+<span class="sourceLineNo">179</span><a name="line.179"></a>
+<span class="sourceLineNo">180</span> /**<a name="line.180"></a>
+<span class="sourceLineNo">181</span> * Use one of these to keep a running
account of cached blocks by file. Throw it away when done.<a
name="line.181"></a>
+<span class="sourceLineNo">182</span> * This is different than metrics in
that it is stats on current state of a cache.<a name="line.182"></a>
+<span class="sourceLineNo">183</span> * See getLoadedCachedBlocksByFile<a
name="line.183"></a>
+<span class="sourceLineNo">184</span> */<a name="line.184"></a>
+<span class="sourceLineNo">185</span>
@JsonIgnoreProperties({"cachedBlockStatsByFile"})<a name="line.185"></a>
+<span class="sourceLineNo">186</span> public static class CachedBlocksByFile
{<a name="line.186"></a>
+<span class="sourceLineNo">187</span> private int count;<a
name="line.187"></a>
+<span class="sourceLineNo">188</span> private int dataBlockCount;<a
name="line.188"></a>
+<span class="sourceLineNo">189</span> private long size;<a
name="line.189"></a>
+<span class="sourceLineNo">190</span> private long dataSize;<a
name="line.190"></a>
+<span class="sourceLineNo">191</span> private final long now =
System.nanoTime();<a name="line.191"></a>
+<span class="sourceLineNo">192</span> private final int max;<a
name="line.192"></a>
+<span class="sourceLineNo">193</span> public static final int DEFAULT_MAX =
100000;<a name="line.193"></a>
+<span class="sourceLineNo">194</span><a name="line.194"></a>
+<span class="sourceLineNo">195</span> CachedBlocksByFile() {<a
name="line.195"></a>
+<span class="sourceLineNo">196</span> this(null);<a name="line.196"></a>
+<span class="sourceLineNo">197</span> }<a name="line.197"></a>
+<span class="sourceLineNo">198</span><a name="line.198"></a>
+<span class="sourceLineNo">199</span> CachedBlocksByFile(final
Configuration c) {<a name="line.199"></a>
+<span class="sourceLineNo">200</span> this.max = c == null?
DEFAULT_MAX:<a name="line.200"></a>
+<span class="sourceLineNo">201</span>
c.getInt("hbase.ui.blockcache.by.file.max", DEFAULT_MAX);<a name="line.201"></a>
+<span class="sourceLineNo">202</span> }<a name="line.202"></a>
+<span class="sourceLineNo">203</span><a name="line.203"></a>
+<span class="sourceLineNo">204</span> /**<a name="line.204"></a>
+<span class="sourceLineNo">205</span> * Map by filename. use concurent
utils because we want our Map and contained blocks sorted.<a
name="line.205"></a>
+<span class="sourceLineNo">206</span> */<a name="line.206"></a>
+<span class="sourceLineNo">207</span> private NavigableMap<String,
NavigableSet<CachedBlock>> cachedBlockByFile =<a name="line.207"></a>
+<span class="sourceLineNo">208</span> new
ConcurrentSkipListMap<String, NavigableSet<CachedBlock>>();<a
name="line.208"></a>
+<span class="sourceLineNo">209</span> Histogram age =
METRICS.histogram(name(CachedBlocksByFile.class, "age"));<a name="line.209"></a>
+<span class="sourceLineNo">210</span><a name="line.210"></a>
+<span class="sourceLineNo">211</span> /**<a name="line.211"></a>
+<span class="sourceLineNo">212</span> * @param cb<a name="line.212"></a>
+<span class="sourceLineNo">213</span> * @return True if full.... if we
won't be adding any more.<a name="line.213"></a>
+<span class="sourceLineNo">214</span> */<a name="line.214"></a>
+<span class="sourceLineNo">215</span> public boolean update(final
CachedBlock cb) {<a name="line.215"></a>
+<span class="sourceLineNo">216</span> if (isFull()) return true;<a
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+<span class="sourceLineNo">217</span> NavigableSet<CachedBlock> set
= this.cachedBlockByFile.get(cb.getFilename());<a name="line.217"></a>
+<span class="sourceLineNo">218</span> if (set == null) {<a
name="line.218"></a>
+<span class="sourceLineNo">219</span> set = new
ConcurrentSkipListSet<CachedBlock>();<a name="line.219"></a>
+<span class="sourceLineNo">220</span>
this.cachedBlockByFile.put(cb.getFilename(), set);<a name="line.220"></a>
+<span class="sourceLineNo">221</span> }<a name="line.221"></a>
+<span class="sourceLineNo">222</span> set.add(cb);<a name="line.222"></a>
+<span class="sourceLineNo">223</span> this.size += cb.getSize();<a
name="line.223"></a>
+<span class="sourceLineNo">224</span> this.count++;<a name="line.224"></a>
+<span class="sourceLineNo">225</span> BlockType bt = cb.getBlockType();<a
name="line.225"></a>
+<span class="sourceLineNo">226</span> if (bt != null &&
bt.isData()) {<a name="line.226"></a>
+<span class="sourceLineNo">227</span> this.dataBlockCount++;<a
name="line.227"></a>
+<span class="sourceLineNo">228</span> this.dataSize += cb.getSize();<a
name="line.228"></a>
+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
+<span class="sourceLineNo">230</span> long age = this.now -
cb.getCachedTime();<a name="line.230"></a>
+<span class="sourceLineNo">231</span> this.age.update(age);<a
name="line.231"></a>
+<span class="sourceLineNo">232</span> return false;<a name="line.232"></a>
+<span class="sourceLineNo">233</span> }<a name="line.233"></a>
+<span class="sourceLineNo">234</span><a name="line.234"></a>
+<span class="sourceLineNo">235</span> /**<a name="line.235"></a>
+<span class="sourceLineNo">236</span> * @return True if full; i.e. there
are more items in the cache but we only loaded up<a name="line.236"></a>
+<span class="sourceLineNo">237</span> * the maximum set in configuration
<code>hbase.ui.blockcache.by.file.max</code><a name="line.237"></a>
+<span class="sourceLineNo">238</span> * (Default: DEFAULT_MAX).<a
name="line.238"></a>
+<span class="sourceLineNo">239</span> */<a name="line.239"></a>
+<span class="sourceLineNo">240</span> public boolean isFull() {<a
name="line.240"></a>
+<span class="sourceLineNo">241</span> return this.count >= this.max;<a
name="line.241"></a>
+<span class="sourceLineNo">242</span> }<a name="line.242"></a>
+<span class="sourceLineNo">243</span> <a name="line.243"></a>
+<span class="sourceLineNo">244</span> public NavigableMap<String,
NavigableSet<CachedBlock>> getCachedBlockStatsByFile() {<a
name="line.244"></a>
+<span class="sourceLineNo">245</span> return this.cachedBlockByFile;<a
name="line.245"></a>
+<span class="sourceLineNo">246</span> }<a name="line.246"></a>
+<span class="sourceLineNo">247</span><a name="line.247"></a>
+<span class="sourceLineNo">248</span> /**<a name="line.248"></a>
+<span class="sourceLineNo">249</span> * @return count of blocks in the
cache<a name="line.249"></a>
+<span class="sourceLineNo">250</span> */<a name="line.250"></a>
+<span class="sourceLineNo">251</span> public int getCount() {<a
name="line.251"></a>
+<span class="sourceLineNo">252</span> return count;<a name="line.252"></a>
+<span class="sourceLineNo">253</span> }<a name="line.253"></a>
+<span class="sourceLineNo">254</span><a name="line.254"></a>
+<span class="sourceLineNo">255</span> public int getDataCount() {<a
name="line.255"></a>
+<span class="sourceLineNo">256</span> return dataBlockCount;<a
name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span><a name="line.258"></a>
+<span class="sourceLineNo">259</span> /**<a name="line.259"></a>
+<span class="sourceLineNo">260</span> * @return size of blocks in the
cache<a name="line.260"></a>
+<span class="sourceLineNo">261</span> */<a name="line.261"></a>
+<span class="sourceLineNo">262</span> public long getSize() {<a
name="line.262"></a>
+<span class="sourceLineNo">263</span> return size;<a name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span><a name="line.265"></a>
+<span class="sourceLineNo">266</span> /**<a name="line.266"></a>
+<span class="sourceLineNo">267</span> * @return Size of data.<a
name="line.267"></a>
+<span class="sourceLineNo">268</span> */<a name="line.268"></a>
+<span class="sourceLineNo">269</span> public long getDataSize() {<a
name="line.269"></a>
+<span class="sourceLineNo">270</span> return dataSize;<a
name="line.270"></a>
+<span class="sourceLineNo">271</span> }<a name="line.271"></a>
+<span class="sourceLineNo">272</span><a name="line.272"></a>
+<span class="sourceLineNo">273</span> public AgeSnapshot
getAgeInCacheSnapshot() {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> return new AgeSnapshot(this.age);<a
name="line.274"></a>
+<span class="sourceLineNo">275</span> }<a name="line.275"></a>
+<span class="sourceLineNo">276</span><a name="line.276"></a>
+<span class="sourceLineNo">277</span> @Override<a name="line.277"></a>
+<span class="sourceLineNo">278</span> public String toString() {<a
name="line.278"></a>
+<span class="sourceLineNo">279</span> Snapshot snapshot =
age.getSnapshot();<a name="line.279"></a>
+<span class="sourceLineNo">280</span> return "count=" + count + ",
dataBlockCount=" + dataBlockCount + ", size=" + size +<a name="line.280"></a>
+<span class="sourceLineNo">281</span> ", dataSize=" + getDataSize()
+<a name="line.281"></a>
+<span class="sourceLineNo">282</span> ", mean age=" +
snapshot.getMean() + ", stddev age=" + snapshot.getStdDev() +<a
name="line.282"></a>
+<span class="sourceLineNo">283</span> ", min age=" +
snapshot.getMin() + ", max age=" + snapshot.getMax() +<a name="line.283"></a>
+<span class="sourceLineNo">284</span> ", 95th percentile age=" +
snapshot.get95thPercentile() +<a name="line.284"></a>
+<span class="sourceLineNo">285</span> ", 99th percentile age=" +
snapshot.get99thPercentile();<a name="line.285"></a>
+<span class="sourceLineNo">286</span> }<a name="line.286"></a>
+<span class="sourceLineNo">287</span> }<a name="line.287"></a>
+<span class="sourceLineNo">288</span>}<a name="line.288"></a>
