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Posted to commits@hbase.apache.org by mi...@apache.org on 2015/12/16 17:50:48 UTC
[03/51] [partial] hbase-site git commit: Published site at
60d33ce34191533bb858852584bd9bddfeb16a23.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/539ad177/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/WALPerformanceEvaluation.html
----------------------------------------------------------------------
diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/WALPerformanceEvaluation.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/WALPerformanceEvaluation.html
index 9a57ce1..0317558 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/WALPerformanceEvaluation.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/wal/WALPerformanceEvaluation.html
@@ -70,532 +70,536 @@
<span class="sourceLineNo">062</span>import org.apache.htrace.TraceScope;<a name="line.62"></a>
<span class="sourceLineNo">063</span>import org.apache.htrace.impl.ProbabilitySampler;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
-<span class="sourceLineNo">065</span>import com.yammer.metrics.core.Histogram;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import com.yammer.metrics.core.Meter;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import com.yammer.metrics.core.MetricsRegistry;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import com.yammer.metrics.reporting.ConsoleReporter;<a name="line.68"></a>
-<span class="sourceLineNo">069</span><a name="line.69"></a>
-<span class="sourceLineNo">070</span>// imports for things that haven't moved from regionserver.wal yet.<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.regionserver.wal.SecureProtobufLogReader;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.regionserver.wal.SecureProtobufLogWriter;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.regionserver.wal.WALEdit;<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span>/**<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * This class runs performance benchmarks for {@link WAL}.<a name="line.77"></a>
-<span class="sourceLineNo">078</span> * See usage for this tool by running:<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * <code>$ hbase org.apache.hadoop.hbase.wal.WALPerformanceEvaluation -h</code><a name="line.79"></a>
-<span class="sourceLineNo">080</span> */<a name="line.80"></a>
-<span class="sourceLineNo">081</span>@InterfaceAudience.Private<a name="line.81"></a>
-<span class="sourceLineNo">082</span>public final class WALPerformanceEvaluation extends Configured implements Tool {<a name="line.82"></a>
-<span class="sourceLineNo">083</span> private static final Log LOG = LogFactory.getLog(WALPerformanceEvaluation.class.getName());<a name="line.83"></a>
-<span class="sourceLineNo">084</span> private final MetricsRegistry metrics = new MetricsRegistry();<a name="line.84"></a>
-<span class="sourceLineNo">085</span> private final Meter syncMeter =<a name="line.85"></a>
-<span class="sourceLineNo">086</span> metrics.newMeter(WALPerformanceEvaluation.class, "syncMeter", "syncs", TimeUnit.MILLISECONDS);<a name="line.86"></a>
-<span class="sourceLineNo">087</span> private final Histogram syncHistogram =<a name="line.87"></a>
-<span class="sourceLineNo">088</span> metrics.newHistogram(WALPerformanceEvaluation.class, "syncHistogram", "nanos-between-syncs",<a name="line.88"></a>
-<span class="sourceLineNo">089</span> true);<a name="line.89"></a>
-<span class="sourceLineNo">090</span> private final Histogram syncCountHistogram =<a name="line.90"></a>
-<span class="sourceLineNo">091</span> metrics.newHistogram(WALPerformanceEvaluation.class, "syncCountHistogram", "countPerSync",<a name="line.91"></a>
-<span class="sourceLineNo">092</span> true);<a name="line.92"></a>
-<span class="sourceLineNo">093</span> private final Meter appendMeter =<a name="line.93"></a>
-<span class="sourceLineNo">094</span> metrics.newMeter(WALPerformanceEvaluation.class, "appendMeter", "bytes",<a name="line.94"></a>
-<span class="sourceLineNo">095</span> TimeUnit.MILLISECONDS);<a name="line.95"></a>
-<span class="sourceLineNo">096</span> private final Histogram latencyHistogram =<a name="line.96"></a>
-<span class="sourceLineNo">097</span> metrics.newHistogram(WALPerformanceEvaluation.class, "latencyHistogram", "nanos", true);<a name="line.97"></a>
-<span class="sourceLineNo">098</span><a name="line.98"></a>
-<span class="sourceLineNo">099</span> private final MultiVersionConcurrencyControl mvcc = new MultiVersionConcurrencyControl();<a name="line.99"></a>
-<span class="sourceLineNo">100</span><a name="line.100"></a>
-<span class="sourceLineNo">101</span> private HBaseTestingUtility TEST_UTIL;<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span> static final String TABLE_NAME = "WALPerformanceEvaluation";<a name="line.103"></a>
-<span class="sourceLineNo">104</span> static final String QUALIFIER_PREFIX = "q";<a name="line.104"></a>
-<span class="sourceLineNo">105</span> static final String FAMILY_PREFIX = "cf";<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span> private int numQualifiers = 1;<a name="line.107"></a>
-<span class="sourceLineNo">108</span> private int valueSize = 512;<a name="line.108"></a>
-<span class="sourceLineNo">109</span> private int keySize = 16;<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> @Override<a name="line.111"></a>
-<span class="sourceLineNo">112</span> public void setConf(Configuration conf) {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> super.setConf(conf);<a name="line.113"></a>
-<span class="sourceLineNo">114</span> TEST_UTIL = new HBaseTestingUtility(conf);<a name="line.114"></a>
-<span class="sourceLineNo">115</span> }<a name="line.115"></a>
-<span class="sourceLineNo">116</span><a name="line.116"></a>
-<span class="sourceLineNo">117</span> /**<a name="line.117"></a>
-<span class="sourceLineNo">118</span> * Perform WAL.append() of Put object, for the number of iterations requested.<a name="line.118"></a>
-<span class="sourceLineNo">119</span> * Keys and Vaues are generated randomly, the number of column families,<a name="line.119"></a>
-<span class="sourceLineNo">120</span> * qualifiers and key/value size is tunable by the user.<a name="line.120"></a>
-<span class="sourceLineNo">121</span> */<a name="line.121"></a>
-<span class="sourceLineNo">122</span> class WALPutBenchmark implements Runnable {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> private final long numIterations;<a name="line.123"></a>
-<span class="sourceLineNo">124</span> private final int numFamilies;<a name="line.124"></a>
-<span class="sourceLineNo">125</span> private final boolean noSync;<a name="line.125"></a>
-<span class="sourceLineNo">126</span> private final HRegion region;<a name="line.126"></a>
-<span class="sourceLineNo">127</span> private final int syncInterval;<a name="line.127"></a>
-<span class="sourceLineNo">128</span> private final HTableDescriptor htd;<a name="line.128"></a>
-<span class="sourceLineNo">129</span> private final Sampler loopSampler;<a name="line.129"></a>
-<span class="sourceLineNo">130</span><a name="line.130"></a>
-<span class="sourceLineNo">131</span> WALPutBenchmark(final HRegion region, final HTableDescriptor htd,<a name="line.131"></a>
-<span class="sourceLineNo">132</span> final long numIterations, final boolean noSync, final int syncInterval,<a name="line.132"></a>
-<span class="sourceLineNo">133</span> final double traceFreq) {<a name="line.133"></a>
-<span class="sourceLineNo">134</span> this.numIterations = numIterations;<a name="line.134"></a>
-<span class="sourceLineNo">135</span> this.noSync = noSync;<a name="line.135"></a>
-<span class="sourceLineNo">136</span> this.syncInterval = syncInterval;<a name="line.136"></a>
-<span class="sourceLineNo">137</span> this.numFamilies = htd.getColumnFamilies().length;<a name="line.137"></a>
-<span class="sourceLineNo">138</span> this.region = region;<a name="line.138"></a>
-<span class="sourceLineNo">139</span> this.htd = htd;<a name="line.139"></a>
-<span class="sourceLineNo">140</span> String spanReceivers = getConf().get("hbase.trace.spanreceiver.classes");<a name="line.140"></a>
-<span class="sourceLineNo">141</span> if (spanReceivers == null || spanReceivers.isEmpty()) {<a name="line.141"></a>
-<span class="sourceLineNo">142</span> loopSampler = Sampler.NEVER;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> } else {<a name="line.143"></a>
-<span class="sourceLineNo">144</span> if (traceFreq <= 0.0) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> LOG.warn("Tracing enabled but traceFreq=0.");<a name="line.145"></a>
-<span class="sourceLineNo">146</span> loopSampler = Sampler.NEVER;<a name="line.146"></a>
-<span class="sourceLineNo">147</span> } else if (traceFreq >= 1.0) {<a name="line.147"></a>
-<span class="sourceLineNo">148</span> loopSampler = Sampler.ALWAYS;<a name="line.148"></a>
-<span class="sourceLineNo">149</span> if (numIterations > 1000) {<a name="line.149"></a>
-<span class="sourceLineNo">150</span> LOG.warn("Full tracing of all iterations will produce a lot of data. Be sure your"<a name="line.150"></a>
-<span class="sourceLineNo">151</span> + " SpanReciever can keep up.");<a name="line.151"></a>
-<span class="sourceLineNo">152</span> }<a name="line.152"></a>
-<span class="sourceLineNo">153</span> } else {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> getConf().setDouble("hbase.sampler.fraction", traceFreq);<a name="line.154"></a>
-<span class="sourceLineNo">155</span> loopSampler = new ProbabilitySampler(new HBaseHTraceConfiguration(getConf()));<a name="line.155"></a>
-<span class="sourceLineNo">156</span> }<a name="line.156"></a>
-<span class="sourceLineNo">157</span> }<a name="line.157"></a>
-<span class="sourceLineNo">158</span> }<a name="line.158"></a>
-<span class="sourceLineNo">159</span><a name="line.159"></a>
-<span class="sourceLineNo">160</span> @Override<a name="line.160"></a>
-<span class="sourceLineNo">161</span> public void run() {<a name="line.161"></a>
-<span class="sourceLineNo">162</span> byte[] key = new byte[keySize];<a name="line.162"></a>
-<span class="sourceLineNo">163</span> byte[] value = new byte[valueSize];<a name="line.163"></a>
-<span class="sourceLineNo">164</span> Random rand = new Random(Thread.currentThread().getId());<a name="line.164"></a>
-<span class="sourceLineNo">165</span> WAL wal = region.getWAL();<a name="line.165"></a>
-<span class="sourceLineNo">166</span><a name="line.166"></a>
-<span class="sourceLineNo">167</span> TraceScope threadScope =<a name="line.167"></a>
-<span class="sourceLineNo">168</span> Trace.startSpan("WALPerfEval." + Thread.currentThread().getName());<a name="line.168"></a>
-<span class="sourceLineNo">169</span> try {<a name="line.169"></a>
-<span class="sourceLineNo">170</span> long startTime = System.currentTimeMillis();<a name="line.170"></a>
-<span class="sourceLineNo">171</span> int lastSync = 0;<a name="line.171"></a>
-<span class="sourceLineNo">172</span> for (int i = 0; i < numIterations; ++i) {<a name="line.172"></a>
-<span class="sourceLineNo">173</span> assert Trace.currentSpan() == threadScope.getSpan() : "Span leak detected.";<a name="line.173"></a>
-<span class="sourceLineNo">174</span> TraceScope loopScope = Trace.startSpan("runLoopIter" + i, loopSampler);<a name="line.174"></a>
-<span class="sourceLineNo">175</span> try {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> long now = System.nanoTime();<a name="line.176"></a>
-<span class="sourceLineNo">177</span> Put put = setupPut(rand, key, value, numFamilies);<a name="line.177"></a>
-<span class="sourceLineNo">178</span> WALEdit walEdit = new WALEdit();<a name="line.178"></a>
-<span class="sourceLineNo">179</span> addFamilyMapToWALEdit(put.getFamilyCellMap(), walEdit);<a name="line.179"></a>
-<span class="sourceLineNo">180</span> HRegionInfo hri = region.getRegionInfo();<a name="line.180"></a>
-<span class="sourceLineNo">181</span> final WALKey logkey =<a name="line.181"></a>
-<span class="sourceLineNo">182</span> new WALKey(hri.getEncodedNameAsBytes(), hri.getTable(), now, mvcc);<a name="line.182"></a>
-<span class="sourceLineNo">183</span> wal.append(htd, hri, logkey, walEdit, true);<a name="line.183"></a>
-<span class="sourceLineNo">184</span> if (!this.noSync) {<a name="line.184"></a>
-<span class="sourceLineNo">185</span> if (++lastSync >= this.syncInterval) {<a name="line.185"></a>
-<span class="sourceLineNo">186</span> wal.sync();<a name="line.186"></a>
-<span class="sourceLineNo">187</span> lastSync = 0;<a name="line.187"></a>
-<span class="sourceLineNo">188</span> }<a name="line.188"></a>
-<span class="sourceLineNo">189</span> }<a name="line.189"></a>
-<span class="sourceLineNo">190</span> latencyHistogram.update(System.nanoTime() - now);<a name="line.190"></a>
-<span class="sourceLineNo">191</span> } finally {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> loopScope.close();<a name="line.192"></a>
-<span class="sourceLineNo">193</span> }<a name="line.193"></a>
-<span class="sourceLineNo">194</span> }<a name="line.194"></a>
-<span class="sourceLineNo">195</span> long totalTime = (System.currentTimeMillis() - startTime);<a name="line.195"></a>
-<span class="sourceLineNo">196</span> logBenchmarkResult(Thread.currentThread().getName(), numIterations, totalTime);<a name="line.196"></a>
-<span class="sourceLineNo">197</span> } catch (Exception e) {<a name="line.197"></a>
-<span class="sourceLineNo">198</span> LOG.error(getClass().getSimpleName() + " Thread failed", e);<a name="line.198"></a>
-<span class="sourceLineNo">199</span> } finally {<a name="line.199"></a>
-<span class="sourceLineNo">200</span> threadScope.close();<a name="line.200"></a>
-<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> }<a name="line.203"></a>
-<span class="sourceLineNo">204</span><a name="line.204"></a>
-<span class="sourceLineNo">205</span> @Override<a name="line.205"></a>
-<span class="sourceLineNo">206</span> public int run(String[] args) throws Exception {<a name="line.206"></a>
-<span class="sourceLineNo">207</span> Path rootRegionDir = null;<a name="line.207"></a>
-<span class="sourceLineNo">208</span> int numThreads = 1;<a name="line.208"></a>
-<span class="sourceLineNo">209</span> long numIterations = 1000000;<a name="line.209"></a>
-<span class="sourceLineNo">210</span> int numFamilies = 1;<a name="line.210"></a>
-<span class="sourceLineNo">211</span> int syncInterval = 0;<a name="line.211"></a>
-<span class="sourceLineNo">212</span> boolean noSync = false;<a name="line.212"></a>
-<span class="sourceLineNo">213</span> boolean verify = false;<a name="line.213"></a>
-<span class="sourceLineNo">214</span> boolean verbose = false;<a name="line.214"></a>
-<span class="sourceLineNo">215</span> boolean cleanup = true;<a name="line.215"></a>
-<span class="sourceLineNo">216</span> boolean noclosefs = false;<a name="line.216"></a>
-<span class="sourceLineNo">217</span> long roll = Long.MAX_VALUE;<a name="line.217"></a>
-<span class="sourceLineNo">218</span> boolean compress = false;<a name="line.218"></a>
-<span class="sourceLineNo">219</span> String cipher = null;<a name="line.219"></a>
-<span class="sourceLineNo">220</span> int numRegions = 1;<a name="line.220"></a>
-<span class="sourceLineNo">221</span> String spanReceivers = getConf().get("hbase.trace.spanreceiver.classes");<a name="line.221"></a>
-<span class="sourceLineNo">222</span> boolean trace = spanReceivers != null && !spanReceivers.isEmpty();<a name="line.222"></a>
-<span class="sourceLineNo">223</span> double traceFreq = 1.0;<a name="line.223"></a>
-<span class="sourceLineNo">224</span> // Process command line args<a name="line.224"></a>
-<span class="sourceLineNo">225</span> for (int i = 0; i < args.length; i++) {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> String cmd = args[i];<a name="line.226"></a>
-<span class="sourceLineNo">227</span> try {<a name="line.227"></a>
-<span class="sourceLineNo">228</span> if (cmd.equals("-threads")) {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> numThreads = Integer.parseInt(args[++i]);<a name="line.229"></a>
-<span class="sourceLineNo">230</span> } else if (cmd.equals("-iterations")) {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> numIterations = Long.parseLong(args[++i]);<a name="line.231"></a>
-<span class="sourceLineNo">232</span> } else if (cmd.equals("-path")) {<a name="line.232"></a>
-<span class="sourceLineNo">233</span> rootRegionDir = new Path(args[++i]);<a name="line.233"></a>
-<span class="sourceLineNo">234</span> } else if (cmd.equals("-families")) {<a name="line.234"></a>
-<span class="sourceLineNo">235</span> numFamilies = Integer.parseInt(args[++i]);<a name="line.235"></a>
-<span class="sourceLineNo">236</span> } else if (cmd.equals("-qualifiers")) {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> numQualifiers = Integer.parseInt(args[++i]);<a name="line.237"></a>
-<span class="sourceLineNo">238</span> } else if (cmd.equals("-keySize")) {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> keySize = Integer.parseInt(args[++i]);<a name="line.239"></a>
-<span class="sourceLineNo">240</span> } else if (cmd.equals("-valueSize")) {<a name="line.240"></a>
-<span class="sourceLineNo">241</span> valueSize = Integer.parseInt(args[++i]);<a name="line.241"></a>
-<span class="sourceLineNo">242</span> } else if (cmd.equals("-syncInterval")) {<a name="line.242"></a>
-<span class="sourceLineNo">243</span> syncInterval = Integer.parseInt(args[++i]);<a name="line.243"></a>
-<span class="sourceLineNo">244</span> } else if (cmd.equals("-nosync")) {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> noSync = true;<a name="line.245"></a>
-<span class="sourceLineNo">246</span> } else if (cmd.equals("-verify")) {<a name="line.246"></a>
-<span class="sourceLineNo">247</span> verify = true;<a name="line.247"></a>
-<span class="sourceLineNo">248</span> } else if (cmd.equals("-verbose")) {<a name="line.248"></a>
-<span class="sourceLineNo">249</span> verbose = true;<a name="line.249"></a>
-<span class="sourceLineNo">250</span> } else if (cmd.equals("-nocleanup")) {<a name="line.250"></a>
-<span class="sourceLineNo">251</span> cleanup = false;<a name="line.251"></a>
-<span class="sourceLineNo">252</span> } else if (cmd.equals("-noclosefs")) {<a name="line.252"></a>
-<span class="sourceLineNo">253</span> noclosefs = true;<a name="line.253"></a>
-<span class="sourceLineNo">254</span> } else if (cmd.equals("-roll")) {<a name="line.254"></a>
-<span class="sourceLineNo">255</span> roll = Long.parseLong(args[++i]);<a name="line.255"></a>
-<span class="sourceLineNo">256</span> } else if (cmd.equals("-compress")) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> compress = true;<a name="line.257"></a>
-<span class="sourceLineNo">258</span> } else if (cmd.equals("-encryption")) {<a name="line.258"></a>
-<span class="sourceLineNo">259</span> cipher = args[++i];<a name="line.259"></a>
-<span class="sourceLineNo">260</span> } else if (cmd.equals("-regions")) {<a name="line.260"></a>
-<span class="sourceLineNo">261</span> numRegions = Integer.parseInt(args[++i]);<a name="line.261"></a>
-<span class="sourceLineNo">262</span> } else if (cmd.equals("-traceFreq")) {<a name="line.262"></a>
-<span class="sourceLineNo">263</span> traceFreq = Double.parseDouble(args[++i]);<a name="line.263"></a>
-<span class="sourceLineNo">264</span> } else if (cmd.equals("-h")) {<a name="line.264"></a>
-<span class="sourceLineNo">265</span> printUsageAndExit();<a name="line.265"></a>
-<span class="sourceLineNo">266</span> } else if (cmd.equals("--help")) {<a name="line.266"></a>
-<span class="sourceLineNo">267</span> printUsageAndExit();<a name="line.267"></a>
-<span class="sourceLineNo">268</span> } else {<a name="line.268"></a>
-<span class="sourceLineNo">269</span> System.err.println("UNEXPECTED: " + cmd);<a name="line.269"></a>
-<span class="sourceLineNo">270</span> printUsageAndExit();<a name="line.270"></a>
-<span class="sourceLineNo">271</span> }<a name="line.271"></a>
-<span class="sourceLineNo">272</span> } catch (Exception e) {<a name="line.272"></a>
-<span class="sourceLineNo">273</span> printUsageAndExit();<a name="line.273"></a>
-<span class="sourceLineNo">274</span> }<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> if (compress) {<a name="line.277"></a>
-<span class="sourceLineNo">278</span> Configuration conf = getConf();<a name="line.278"></a>
-<span class="sourceLineNo">279</span> conf.setBoolean(HConstants.ENABLE_WAL_COMPRESSION, true);<a name="line.279"></a>
-<span class="sourceLineNo">280</span> }<a name="line.280"></a>
-<span class="sourceLineNo">281</span><a name="line.281"></a>
-<span class="sourceLineNo">282</span> if (cipher != null) {<a name="line.282"></a>
-<span class="sourceLineNo">283</span> // Set up WAL for encryption<a name="line.283"></a>
-<span class="sourceLineNo">284</span> Configuration conf = getConf();<a name="line.284"></a>
-<span class="sourceLineNo">285</span> conf.set(HConstants.CRYPTO_KEYPROVIDER_CONF_KEY, KeyProviderForTesting.class.getName());<a name="line.285"></a>
-<span class="sourceLineNo">286</span> conf.set(HConstants.CRYPTO_MASTERKEY_NAME_CONF_KEY, "hbase");<a name="line.286"></a>
-<span class="sourceLineNo">287</span> conf.setClass("hbase.regionserver.hlog.reader.impl", SecureProtobufLogReader.class,<a name="line.287"></a>
-<span class="sourceLineNo">288</span> WAL.Reader.class);<a name="line.288"></a>
-<span class="sourceLineNo">289</span> conf.setClass("hbase.regionserver.hlog.writer.impl", SecureProtobufLogWriter.class,<a name="line.289"></a>
-<span class="sourceLineNo">290</span> Writer.class);<a name="line.290"></a>
-<span class="sourceLineNo">291</span> conf.setBoolean(HConstants.ENABLE_WAL_ENCRYPTION, true);<a name="line.291"></a>
-<span class="sourceLineNo">292</span> conf.set(HConstants.CRYPTO_WAL_ALGORITHM_CONF_KEY, cipher);<a name="line.292"></a>
-<span class="sourceLineNo">293</span> }<a name="line.293"></a>
-<span class="sourceLineNo">294</span><a name="line.294"></a>
-<span class="sourceLineNo">295</span> if (numThreads < numRegions) {<a name="line.295"></a>
-<span class="sourceLineNo">296</span> LOG.warn("Number of threads is less than the number of regions; some regions will sit idle.");<a name="line.296"></a>
-<span class="sourceLineNo">297</span> }<a name="line.297"></a>
-<span class="sourceLineNo">298</span><a name="line.298"></a>
-<span class="sourceLineNo">299</span> // Internal config. goes off number of threads; if more threads than handlers, stuff breaks.<a name="line.299"></a>
-<span class="sourceLineNo">300</span> // In regionserver, number of handlers == number of threads.<a name="line.300"></a>
-<span class="sourceLineNo">301</span> getConf().setInt(HConstants.REGION_SERVER_HANDLER_COUNT, numThreads);<a name="line.301"></a>
-<span class="sourceLineNo">302</span><a name="line.302"></a>
-<span class="sourceLineNo">303</span> // Run WAL Performance Evaluation<a name="line.303"></a>
-<span class="sourceLineNo">304</span> // First set the fs from configs. In case we are on hadoop1<a name="line.304"></a>
-<span class="sourceLineNo">305</span> FSUtils.setFsDefault(getConf(), FSUtils.getRootDir(getConf()));<a name="line.305"></a>
-<span class="sourceLineNo">306</span> FileSystem fs = FileSystem.get(getConf());<a name="line.306"></a>
-<span class="sourceLineNo">307</span> LOG.info("FileSystem: " + fs);<a name="line.307"></a>
-<span class="sourceLineNo">308</span><a name="line.308"></a>
-<span class="sourceLineNo">309</span> SpanReceiverHost receiverHost = trace ? SpanReceiverHost.getInstance(getConf()) : null;<a name="line.309"></a>
-<span class="sourceLineNo">310</span> final Sampler<?> sampler = trace ? Sampler.ALWAYS : Sampler.NEVER;<a name="line.310"></a>
-<span class="sourceLineNo">311</span> TraceScope scope = Trace.startSpan("WALPerfEval", sampler);<a name="line.311"></a>
-<span class="sourceLineNo">312</span><a name="line.312"></a>
-<span class="sourceLineNo">313</span> try {<a name="line.313"></a>
-<span class="sourceLineNo">314</span> if (rootRegionDir == null) {<a name="line.314"></a>
-<span class="sourceLineNo">315</span> rootRegionDir = TEST_UTIL.getDataTestDirOnTestFS("WALPerformanceEvaluation");<a name="line.315"></a>
-<span class="sourceLineNo">316</span> }<a name="line.316"></a>
-<span class="sourceLineNo">317</span> rootRegionDir = rootRegionDir.makeQualified(fs);<a name="line.317"></a>
-<span class="sourceLineNo">318</span> cleanRegionRootDir(fs, rootRegionDir);<a name="line.318"></a>
-<span class="sourceLineNo">319</span> FSUtils.setRootDir(getConf(), rootRegionDir);<a name="line.319"></a>
-<span class="sourceLineNo">320</span> final WALFactory wals = new WALFactory(getConf(), null, "wals");<a name="line.320"></a>
-<span class="sourceLineNo">321</span> final HRegion[] regions = new HRegion[numRegions];<a name="line.321"></a>
-<span class="sourceLineNo">322</span> final Runnable[] benchmarks = new Runnable[numRegions];<a name="line.322"></a>
-<span class="sourceLineNo">323</span> final MockRegionServerServices mockServices = new MockRegionServerServices(getConf());<a name="line.323"></a>
-<span class="sourceLineNo">324</span> final LogRoller roller = new LogRoller(mockServices, mockServices);<a name="line.324"></a>
-<span class="sourceLineNo">325</span> Threads.setDaemonThreadRunning(roller.getThread(), "WALPerfEval.logRoller");<a name="line.325"></a>
-<span class="sourceLineNo">326</span><a name="line.326"></a>
-<span class="sourceLineNo">327</span> try {<a name="line.327"></a>
-<span class="sourceLineNo">328</span> for(int i = 0; i < numRegions; i++) {<a name="line.328"></a>
-<span class="sourceLineNo">329</span> // Initialize Table Descriptor<a name="line.329"></a>
-<span class="sourceLineNo">330</span> // a table per desired region means we can avoid carving up the key space<a name="line.330"></a>
-<span class="sourceLineNo">331</span> final HTableDescriptor htd = createHTableDescriptor(i, numFamilies);<a name="line.331"></a>
-<span class="sourceLineNo">332</span> regions[i] = openRegion(fs, rootRegionDir, htd, wals, roll, roller);<a name="line.332"></a>
-<span class="sourceLineNo">333</span> benchmarks[i] = Trace.wrap(new WALPutBenchmark(regions[i], htd, numIterations, noSync,<a name="line.333"></a>
-<span class="sourceLineNo">334</span> syncInterval, traceFreq));<a name="line.334"></a>
-<span class="sourceLineNo">335</span> }<a name="line.335"></a>
-<span class="sourceLineNo">336</span> ConsoleReporter.enable(this.metrics, 30, TimeUnit.SECONDS);<a name="line.336"></a>
-<span class="sourceLineNo">337</span> long putTime = runBenchmark(benchmarks, numThreads);<a name="line.337"></a>
-<span class="sourceLineNo">338</span> logBenchmarkResult("Summary: threads=" + numThreads + ", iterations=" + numIterations +<a name="line.338"></a>
-<span class="sourceLineNo">339</span> ", syncInterval=" + syncInterval, numIterations * numThreads, putTime);<a name="line.339"></a>
-<span class="sourceLineNo">340</span> <a name="line.340"></a>
-<span class="sourceLineNo">341</span> for (int i = 0; i < numRegions; i++) {<a name="line.341"></a>
-<span class="sourceLineNo">342</span> if (regions[i] != null) {<a name="line.342"></a>
-<span class="sourceLineNo">343</span> closeRegion(regions[i]);<a name="line.343"></a>
-<span class="sourceLineNo">344</span> regions[i] = null;<a name="line.344"></a>
-<span class="sourceLineNo">345</span> }<a name="line.345"></a>
-<span class="sourceLineNo">346</span> }<a name="line.346"></a>
-<span class="sourceLineNo">347</span> if (verify) {<a name="line.347"></a>
-<span class="sourceLineNo">348</span> LOG.info("verifying written log entries.");<a name="line.348"></a>
-<span class="sourceLineNo">349</span> Path dir = new Path(FSUtils.getRootDir(getConf()),<a name="line.349"></a>
-<span class="sourceLineNo">350</span> DefaultWALProvider.getWALDirectoryName("wals"));<a name="line.350"></a>
-<span class="sourceLineNo">351</span> long editCount = 0;<a name="line.351"></a>
-<span class="sourceLineNo">352</span> FileStatus [] fsss = fs.listStatus(dir);<a name="line.352"></a>
-<span class="sourceLineNo">353</span> if (fsss.length == 0) throw new IllegalStateException("No WAL found");<a name="line.353"></a>
-<span class="sourceLineNo">354</span> for (FileStatus fss: fsss) {<a name="line.354"></a>
-<span class="sourceLineNo">355</span> Path p = fss.getPath();<a name="line.355"></a>
-<span class="sourceLineNo">356</span> if (!fs.exists(p)) throw new IllegalStateException(p.toString());<a name="line.356"></a>
-<span class="sourceLineNo">357</span> editCount += verify(wals, p, verbose);<a name="line.357"></a>
-<span class="sourceLineNo">358</span> }<a name="line.358"></a>
-<span class="sourceLineNo">359</span> long expected = numIterations * numThreads;<a name="line.359"></a>
-<span class="sourceLineNo">360</span> if (editCount != expected) {<a name="line.360"></a>
-<span class="sourceLineNo">361</span> throw new IllegalStateException("Counted=" + editCount + ", expected=" + expected);<a name="line.361"></a>
+<span class="sourceLineNo">065</span>import com.codahale.metrics.ConsoleReporter;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import com.codahale.metrics.Histogram;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import com.codahale.metrics.Meter;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import com.codahale.metrics.MetricRegistry;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import com.codahale.metrics.MetricFilter;<a name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span>// imports for things that haven't moved from regionserver.wal yet.<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.regionserver.wal.SecureProtobufLogReader;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.regionserver.wal.SecureProtobufLogWriter;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.regionserver.wal.WALEdit;<a name="line.75"></a>
+<span class="sourceLineNo">076</span><a name="line.76"></a>
+<span class="sourceLineNo">077</span>import static com.codahale.metrics.MetricRegistry.name;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span>/**<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * This class runs performance benchmarks for {@link WAL}.<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * See usage for this tool by running:<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * <code>$ hbase org.apache.hadoop.hbase.wal.WALPerformanceEvaluation -h</code><a name="line.82"></a>
+<span class="sourceLineNo">083</span> */<a name="line.83"></a>
+<span class="sourceLineNo">084</span>@InterfaceAudience.Private<a name="line.84"></a>
+<span class="sourceLineNo">085</span>public final class WALPerformanceEvaluation extends Configured implements Tool {<a name="line.85"></a>
+<span class="sourceLineNo">086</span> private static final Log LOG = LogFactory.getLog(WALPerformanceEvaluation.class.getName());<a name="line.86"></a>
+<span class="sourceLineNo">087</span> private final MetricRegistry metrics = new MetricRegistry();<a name="line.87"></a>
+<span class="sourceLineNo">088</span> private final Meter syncMeter =<a name="line.88"></a>
+<span class="sourceLineNo">089</span> metrics.meter(name(WALPerformanceEvaluation.class, "syncMeter", "syncs"));<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> private final Histogram syncHistogram = metrics.histogram(<a name="line.91"></a>
+<span class="sourceLineNo">092</span> name(WALPerformanceEvaluation.class, "syncHistogram", "nanos-between-syncs"));<a name="line.92"></a>
+<span class="sourceLineNo">093</span> private final Histogram syncCountHistogram = metrics.histogram(<a name="line.93"></a>
+<span class="sourceLineNo">094</span> name(WALPerformanceEvaluation.class, "syncCountHistogram", "countPerSync"));<a name="line.94"></a>
+<span class="sourceLineNo">095</span> private final Meter appendMeter = metrics.meter(<a name="line.95"></a>
+<span class="sourceLineNo">096</span> name(WALPerformanceEvaluation.class, "appendMeter", "bytes"));<a name="line.96"></a>
+<span class="sourceLineNo">097</span> private final Histogram latencyHistogram =<a name="line.97"></a>
+<span class="sourceLineNo">098</span> metrics.histogram(name(WALPerformanceEvaluation.class, "latencyHistogram", "nanos"));<a name="line.98"></a>
+<span class="sourceLineNo">099</span><a name="line.99"></a>
+<span class="sourceLineNo">100</span> private final MultiVersionConcurrencyControl mvcc = new MultiVersionConcurrencyControl();<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span> private HBaseTestingUtility TEST_UTIL;<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span> static final String TABLE_NAME = "WALPerformanceEvaluation";<a name="line.104"></a>
+<span class="sourceLineNo">105</span> static final String QUALIFIER_PREFIX = "q";<a name="line.105"></a>
+<span class="sourceLineNo">106</span> static final String FAMILY_PREFIX = "cf";<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span> private int numQualifiers = 1;<a name="line.108"></a>
+<span class="sourceLineNo">109</span> private int valueSize = 512;<a name="line.109"></a>
+<span class="sourceLineNo">110</span> private int keySize = 16;<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span> @Override<a name="line.112"></a>
+<span class="sourceLineNo">113</span> public void setConf(Configuration conf) {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> super.setConf(conf);<a name="line.114"></a>
+<span class="sourceLineNo">115</span> TEST_UTIL = new HBaseTestingUtility(conf);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> }<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span> /**<a name="line.118"></a>
+<span class="sourceLineNo">119</span> * Perform WAL.append() of Put object, for the number of iterations requested.<a name="line.119"></a>
+<span class="sourceLineNo">120</span> * Keys and Vaues are generated randomly, the number of column families,<a name="line.120"></a>
+<span class="sourceLineNo">121</span> * qualifiers and key/value size is tunable by the user.<a name="line.121"></a>
+<span class="sourceLineNo">122</span> */<a name="line.122"></a>
+<span class="sourceLineNo">123</span> class WALPutBenchmark implements Runnable {<a name="line.123"></a>
+<span class="sourceLineNo">124</span> private final long numIterations;<a name="line.124"></a>
+<span class="sourceLineNo">125</span> private final int numFamilies;<a name="line.125"></a>
+<span class="sourceLineNo">126</span> private final boolean noSync;<a name="line.126"></a>
+<span class="sourceLineNo">127</span> private final HRegion region;<a name="line.127"></a>
+<span class="sourceLineNo">128</span> private final int syncInterval;<a name="line.128"></a>
+<span class="sourceLineNo">129</span> private final HTableDescriptor htd;<a name="line.129"></a>
+<span class="sourceLineNo">130</span> private final Sampler loopSampler;<a name="line.130"></a>
+<span class="sourceLineNo">131</span><a name="line.131"></a>
+<span class="sourceLineNo">132</span> WALPutBenchmark(final HRegion region, final HTableDescriptor htd,<a name="line.132"></a>
+<span class="sourceLineNo">133</span> final long numIterations, final boolean noSync, final int syncInterval,<a name="line.133"></a>
+<span class="sourceLineNo">134</span> final double traceFreq) {<a name="line.134"></a>
+<span class="sourceLineNo">135</span> this.numIterations = numIterations;<a name="line.135"></a>
+<span class="sourceLineNo">136</span> this.noSync = noSync;<a name="line.136"></a>
+<span class="sourceLineNo">137</span> this.syncInterval = syncInterval;<a name="line.137"></a>
+<span class="sourceLineNo">138</span> this.numFamilies = htd.getColumnFamilies().length;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> this.region = region;<a name="line.139"></a>
+<span class="sourceLineNo">140</span> this.htd = htd;<a name="line.140"></a>
+<span class="sourceLineNo">141</span> String spanReceivers = getConf().get("hbase.trace.spanreceiver.classes");<a name="line.141"></a>
+<span class="sourceLineNo">142</span> if (spanReceivers == null || spanReceivers.isEmpty()) {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> loopSampler = Sampler.NEVER;<a name="line.143"></a>
+<span class="sourceLineNo">144</span> } else {<a name="line.144"></a>
+<span class="sourceLineNo">145</span> if (traceFreq <= 0.0) {<a name="line.145"></a>
+<span class="sourceLineNo">146</span> LOG.warn("Tracing enabled but traceFreq=0.");<a name="line.146"></a>
+<span class="sourceLineNo">147</span> loopSampler = Sampler.NEVER;<a name="line.147"></a>
+<span class="sourceLineNo">148</span> } else if (traceFreq >= 1.0) {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> loopSampler = Sampler.ALWAYS;<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (numIterations > 1000) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> LOG.warn("Full tracing of all iterations will produce a lot of data. Be sure your"<a name="line.151"></a>
+<span class="sourceLineNo">152</span> + " SpanReciever can keep up.");<a name="line.152"></a>
+<span class="sourceLineNo">153</span> }<a name="line.153"></a>
+<span class="sourceLineNo">154</span> } else {<a name="line.154"></a>
+<span class="sourceLineNo">155</span> getConf().setDouble("hbase.sampler.fraction", traceFreq);<a name="line.155"></a>
+<span class="sourceLineNo">156</span> loopSampler = new ProbabilitySampler(new HBaseHTraceConfiguration(getConf()));<a name="line.156"></a>
+<span class="sourceLineNo">157</span> }<a name="line.157"></a>
+<span class="sourceLineNo">158</span> }<a name="line.158"></a>
+<span class="sourceLineNo">159</span> }<a name="line.159"></a>
+<span class="sourceLineNo">160</span><a name="line.160"></a>
+<span class="sourceLineNo">161</span> @Override<a name="line.161"></a>
+<span class="sourceLineNo">162</span> public void run() {<a name="line.162"></a>
+<span class="sourceLineNo">163</span> byte[] key = new byte[keySize];<a name="line.163"></a>
+<span class="sourceLineNo">164</span> byte[] value = new byte[valueSize];<a name="line.164"></a>
+<span class="sourceLineNo">165</span> Random rand = new Random(Thread.currentThread().getId());<a name="line.165"></a>
+<span class="sourceLineNo">166</span> WAL wal = region.getWAL();<a name="line.166"></a>
+<span class="sourceLineNo">167</span><a name="line.167"></a>
+<span class="sourceLineNo">168</span> TraceScope threadScope =<a name="line.168"></a>
+<span class="sourceLineNo">169</span> Trace.startSpan("WALPerfEval." + Thread.currentThread().getName());<a name="line.169"></a>
+<span class="sourceLineNo">170</span> try {<a name="line.170"></a>
+<span class="sourceLineNo">171</span> long startTime = System.currentTimeMillis();<a name="line.171"></a>
+<span class="sourceLineNo">172</span> int lastSync = 0;<a name="line.172"></a>
+<span class="sourceLineNo">173</span> for (int i = 0; i < numIterations; ++i) {<a name="line.173"></a>
+<span class="sourceLineNo">174</span> assert Trace.currentSpan() == threadScope.getSpan() : "Span leak detected.";<a name="line.174"></a>
+<span class="sourceLineNo">175</span> TraceScope loopScope = Trace.startSpan("runLoopIter" + i, loopSampler);<a name="line.175"></a>
+<span class="sourceLineNo">176</span> try {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> long now = System.nanoTime();<a name="line.177"></a>
+<span class="sourceLineNo">178</span> Put put = setupPut(rand, key, value, numFamilies);<a name="line.178"></a>
+<span class="sourceLineNo">179</span> WALEdit walEdit = new WALEdit();<a name="line.179"></a>
+<span class="sourceLineNo">180</span> addFamilyMapToWALEdit(put.getFamilyCellMap(), walEdit);<a name="line.180"></a>
+<span class="sourceLineNo">181</span> HRegionInfo hri = region.getRegionInfo();<a name="line.181"></a>
+<span class="sourceLineNo">182</span> final WALKey logkey =<a name="line.182"></a>
+<span class="sourceLineNo">183</span> new WALKey(hri.getEncodedNameAsBytes(), hri.getTable(), now, mvcc);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> wal.append(htd, hri, logkey, walEdit, true);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> if (!this.noSync) {<a name="line.185"></a>
+<span class="sourceLineNo">186</span> if (++lastSync >= this.syncInterval) {<a name="line.186"></a>
+<span class="sourceLineNo">187</span> wal.sync();<a name="line.187"></a>
+<span class="sourceLineNo">188</span> lastSync = 0;<a name="line.188"></a>
+<span class="sourceLineNo">189</span> }<a name="line.189"></a>
+<span class="sourceLineNo">190</span> }<a name="line.190"></a>
+<span class="sourceLineNo">191</span> latencyHistogram.update(System.nanoTime() - now);<a name="line.191"></a>
+<span class="sourceLineNo">192</span> } finally {<a name="line.192"></a>
+<span class="sourceLineNo">193</span> loopScope.close();<a name="line.193"></a>
+<span class="sourceLineNo">194</span> }<a name="line.194"></a>
+<span class="sourceLineNo">195</span> }<a name="line.195"></a>
+<span class="sourceLineNo">196</span> long totalTime = (System.currentTimeMillis() - startTime);<a name="line.196"></a>
+<span class="sourceLineNo">197</span> logBenchmarkResult(Thread.currentThread().getName(), numIterations, totalTime);<a name="line.197"></a>
+<span class="sourceLineNo">198</span> } catch (Exception e) {<a name="line.198"></a>
+<span class="sourceLineNo">199</span> LOG.error(getClass().getSimpleName() + " Thread failed", e);<a name="line.199"></a>
+<span class="sourceLineNo">200</span> } finally {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> threadScope.close();<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><a name="line.205"></a>
+<span class="sourceLineNo">206</span> @Override<a name="line.206"></a>
+<span class="sourceLineNo">207</span> public int run(String[] args) throws Exception {<a name="line.207"></a>
+<span class="sourceLineNo">208</span> Path rootRegionDir = null;<a name="line.208"></a>
+<span class="sourceLineNo">209</span> int numThreads = 1;<a name="line.209"></a>
+<span class="sourceLineNo">210</span> long numIterations = 1000000;<a name="line.210"></a>
+<span class="sourceLineNo">211</span> int numFamilies = 1;<a name="line.211"></a>
+<span class="sourceLineNo">212</span> int syncInterval = 0;<a name="line.212"></a>
+<span class="sourceLineNo">213</span> boolean noSync = false;<a name="line.213"></a>
+<span class="sourceLineNo">214</span> boolean verify = false;<a name="line.214"></a>
+<span class="sourceLineNo">215</span> boolean verbose = false;<a name="line.215"></a>
+<span class="sourceLineNo">216</span> boolean cleanup = true;<a name="line.216"></a>
+<span class="sourceLineNo">217</span> boolean noclosefs = false;<a name="line.217"></a>
+<span class="sourceLineNo">218</span> long roll = Long.MAX_VALUE;<a name="line.218"></a>
+<span class="sourceLineNo">219</span> boolean compress = false;<a name="line.219"></a>
+<span class="sourceLineNo">220</span> String cipher = null;<a name="line.220"></a>
+<span class="sourceLineNo">221</span> int numRegions = 1;<a name="line.221"></a>
+<span class="sourceLineNo">222</span> String spanReceivers = getConf().get("hbase.trace.spanreceiver.classes");<a name="line.222"></a>
+<span class="sourceLineNo">223</span> boolean trace = spanReceivers != null && !spanReceivers.isEmpty();<a name="line.223"></a>
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+<span class="sourceLineNo">225</span> // Process command line args<a name="line.225"></a>
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+<span class="sourceLineNo">277</span><a name="line.277"></a>
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+<span class="sourceLineNo">380</span> // Remove the root dir for this test region<a name="line.380"></a>
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+<span class="sourceLineNo">382</span> }<a name="line.382"></a>
+<span class="sourceLineNo">383</span> } finally {<a name="line.383"></a>
+<span class="sourceLineNo">384</span> // We may be called inside a test that wants to keep on using the fs.<a name="line.384"></a>
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+<span class="sourceLineNo">389</span><a name="line.389"></a>
+<span class="sourceLineNo">390</span> return(0);<a name="line.390"></a>
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+<span class="sourceLineNo">392</span><a name="line.392"></a>
+<span class="sourceLineNo">393</span> private static HTableDescriptor createHTableDescriptor(final int regionNum,<a name="line.393"></a>
+<span class="sourceLineNo">394</span> final int numFamilies) {<a name="line.394"></a>
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+<span class="sourceLineNo">402</span><a name="line.402"></a>
+<span class="sourceLineNo">403</span> /**<a name="line.403"></a>
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+<span class="sourceLineNo">405</span> * Verify that the file has expected number of edits.<a name="line.405"></a>
+<span class="sourceLineNo">406</span> * @param wals may not be null<a name="line.406"></a>
+<span class="sourceLineNo">407</span> * @param wal<a name="line.407"></a>
+<span class="sourceLineNo">408</span> * @return Count of edits.<a name="line.408"></a>
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+<span class="sourceLineNo">410</span> */<a name="line.410"></a>
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+<span class="sourceLineNo">413</span> WAL.Reader reader = wals.c
<TRUNCATED>