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Posted to commits@hbase.apache.org by mi...@apache.org on 2016/03/31 18:18:14 UTC
[12/51] [partial] hbase-site git commit: Published site at
d6fd85945130516ba10fe4854ce080e5a2329983.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f8d69509/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Monitor.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Monitor.html b/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Monitor.html
index 9c063a3..9cb1f08 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Monitor.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Monitor.html
@@ -54,1212 +54,1218 @@
<span class="sourceLineNo">046</span>import org.apache.hadoop.conf.Configuration;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.AuthUtil;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.ChoreService;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.HColumnDescriptor;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.HConstants;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.NamespaceDescriptor;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.ScheduledChore;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.ServerName;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.TableName;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.TableNotEnabledException;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.TableNotFoundException;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.client.Get;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.client.Put;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.client.RegionLocator;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.client.ResultScanner;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.client.Table;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.filter.FirstKeyOnlyFilter;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.tool.Canary.RegionTask.TaskType;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.util.ReflectionUtils;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.util.RegionSplitter;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.hadoop.util.GenericOptionsParser;<a name="line.79"></a>
-<span class="sourceLineNo">080</span>import org.apache.hadoop.util.Tool;<a name="line.80"></a>
-<span class="sourceLineNo">081</span>import org.apache.hadoop.util.ToolRunner;<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> * HBase Canary Tool, that that can be used to do<a name="line.84"></a>
-<span class="sourceLineNo">085</span> * "canary monitoring" of a running HBase cluster.<a name="line.85"></a>
-<span class="sourceLineNo">086</span> *<a name="line.86"></a>
-<span class="sourceLineNo">087</span> * Here are two modes<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * 1. region mode - Foreach region tries to get one row per column family<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * and outputs some information about failure or latency.<a name="line.89"></a>
-<span class="sourceLineNo">090</span> *<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * 2. regionserver mode - Foreach regionserver tries to get one row from one table<a name="line.91"></a>
-<span class="sourceLineNo">092</span> * selected randomly and outputs some information about failure or latency.<a name="line.92"></a>
-<span class="sourceLineNo">093</span> */<a name="line.93"></a>
-<span class="sourceLineNo">094</span>public final class Canary implements Tool {<a name="line.94"></a>
-<span class="sourceLineNo">095</span> // Sink interface used by the canary to outputs information<a name="line.95"></a>
-<span class="sourceLineNo">096</span> public interface Sink {<a name="line.96"></a>
-<span class="sourceLineNo">097</span> public long getReadFailureCount();<a name="line.97"></a>
-<span class="sourceLineNo">098</span> public long incReadFailureCount();<a name="line.98"></a>
-<span class="sourceLineNo">099</span> public void publishReadFailure(HRegionInfo region, Exception e);<a name="line.99"></a>
-<span class="sourceLineNo">100</span> public void publishReadFailure(HRegionInfo region, HColumnDescriptor column, Exception e);<a name="line.100"></a>
-<span class="sourceLineNo">101</span> public void publishReadTiming(HRegionInfo region, HColumnDescriptor column, long msTime);<a name="line.101"></a>
-<span class="sourceLineNo">102</span> public long getWriteFailureCount();<a name="line.102"></a>
-<span class="sourceLineNo">103</span> public void publishWriteFailure(HRegionInfo region, Exception e);<a name="line.103"></a>
-<span class="sourceLineNo">104</span> public void publishWriteFailure(HRegionInfo region, HColumnDescriptor column, Exception e);<a name="line.104"></a>
-<span class="sourceLineNo">105</span> public void publishWriteTiming(HRegionInfo region, HColumnDescriptor column, long msTime);<a name="line.105"></a>
-<span class="sourceLineNo">106</span> }<a name="line.106"></a>
-<span class="sourceLineNo">107</span> // new extended sink for output regionserver mode info<a name="line.107"></a>
-<span class="sourceLineNo">108</span> // do not change the Sink interface directly due to maintaining the API<a name="line.108"></a>
-<span class="sourceLineNo">109</span> public interface ExtendedSink extends Sink {<a name="line.109"></a>
-<span class="sourceLineNo">110</span> public void publishReadFailure(String table, String server);<a name="line.110"></a>
-<span class="sourceLineNo">111</span> public void publishReadTiming(String table, String server, long msTime);<a name="line.111"></a>
-<span class="sourceLineNo">112</span> }<a name="line.112"></a>
-<span class="sourceLineNo">113</span><a name="line.113"></a>
-<span class="sourceLineNo">114</span> // Simple implementation of canary sink that allows to plot on<a name="line.114"></a>
-<span class="sourceLineNo">115</span> // file or standard output timings or failures.<a name="line.115"></a>
-<span class="sourceLineNo">116</span> public static class StdOutSink implements Sink {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> private AtomicLong readFailureCount = new AtomicLong(0),<a name="line.117"></a>
-<span class="sourceLineNo">118</span> writeFailureCount = new AtomicLong(0);<a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span> @Override<a name="line.120"></a>
-<span class="sourceLineNo">121</span> public long getReadFailureCount() {<a name="line.121"></a>
-<span class="sourceLineNo">122</span> return readFailureCount.get();<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> @Override<a name="line.125"></a>
-<span class="sourceLineNo">126</span> public long incReadFailureCount() {<a name="line.126"></a>
-<span class="sourceLineNo">127</span> return readFailureCount.incrementAndGet();<a name="line.127"></a>
-<span class="sourceLineNo">128</span> }<a name="line.128"></a>
-<span class="sourceLineNo">129</span><a name="line.129"></a>
-<span class="sourceLineNo">130</span> @Override<a name="line.130"></a>
-<span class="sourceLineNo">131</span> public void publishReadFailure(HRegionInfo region, Exception e) {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> readFailureCount.incrementAndGet();<a name="line.132"></a>
-<span class="sourceLineNo">133</span> LOG.error(String.format("read from region %s failed", region.getRegionNameAsString()), e);<a name="line.133"></a>
-<span class="sourceLineNo">134</span> }<a name="line.134"></a>
-<span class="sourceLineNo">135</span><a name="line.135"></a>
-<span class="sourceLineNo">136</span> @Override<a name="line.136"></a>
-<span class="sourceLineNo">137</span> public void publishReadFailure(HRegionInfo region, HColumnDescriptor column, Exception e) {<a name="line.137"></a>
-<span class="sourceLineNo">138</span> readFailureCount.incrementAndGet();<a name="line.138"></a>
-<span class="sourceLineNo">139</span> LOG.error(String.format("read from region %s column family %s failed",<a name="line.139"></a>
-<span class="sourceLineNo">140</span> region.getRegionNameAsString(), column.getNameAsString()), e);<a name="line.140"></a>
-<span class="sourceLineNo">141</span> }<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> @Override<a name="line.143"></a>
-<span class="sourceLineNo">144</span> public void publishReadTiming(HRegionInfo region, HColumnDescriptor column, long msTime) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> LOG.info(String.format("read from region %s column family %s in %dms",<a name="line.145"></a>
-<span class="sourceLineNo">146</span> region.getRegionNameAsString(), column.getNameAsString(), msTime));<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span><a name="line.148"></a>
-<span class="sourceLineNo">149</span> @Override<a name="line.149"></a>
-<span class="sourceLineNo">150</span> public long getWriteFailureCount() {<a name="line.150"></a>
-<span class="sourceLineNo">151</span> return writeFailureCount.get();<a name="line.151"></a>
-<span class="sourceLineNo">152</span> }<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span> @Override<a name="line.154"></a>
-<span class="sourceLineNo">155</span> public void publishWriteFailure(HRegionInfo region, Exception e) {<a name="line.155"></a>
-<span class="sourceLineNo">156</span> writeFailureCount.incrementAndGet();<a name="line.156"></a>
-<span class="sourceLineNo">157</span> LOG.error(String.format("write to region %s failed", region.getRegionNameAsString()), e);<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 publishWriteFailure(HRegionInfo region, HColumnDescriptor column, Exception e) {<a name="line.161"></a>
-<span class="sourceLineNo">162</span> writeFailureCount.incrementAndGet();<a name="line.162"></a>
-<span class="sourceLineNo">163</span> LOG.error(String.format("write to region %s column family %s failed",<a name="line.163"></a>
-<span class="sourceLineNo">164</span> region.getRegionNameAsString(), column.getNameAsString()), e);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> }<a name="line.165"></a>
-<span class="sourceLineNo">166</span><a name="line.166"></a>
-<span class="sourceLineNo">167</span> @Override<a name="line.167"></a>
-<span class="sourceLineNo">168</span> public void publishWriteTiming(HRegionInfo region, HColumnDescriptor column, long msTime) {<a name="line.168"></a>
-<span class="sourceLineNo">169</span> LOG.info(String.format("write to region %s column family %s in %dms",<a name="line.169"></a>
-<span class="sourceLineNo">170</span> region.getRegionNameAsString(), column.getNameAsString(), msTime));<a name="line.170"></a>
-<span class="sourceLineNo">171</span> }<a name="line.171"></a>
-<span class="sourceLineNo">172</span> }<a name="line.172"></a>
-<span class="sourceLineNo">173</span> // a ExtendedSink implementation<a name="line.173"></a>
-<span class="sourceLineNo">174</span> public static class RegionServerStdOutSink extends StdOutSink implements ExtendedSink {<a name="line.174"></a>
-<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> @Override<a name="line.176"></a>
-<span class="sourceLineNo">177</span> public void publishReadFailure(String table, String server) {<a name="line.177"></a>
-<span class="sourceLineNo">178</span> incReadFailureCount();<a name="line.178"></a>
-<span class="sourceLineNo">179</span> LOG.error(String.format("Read from table:%s on region server:%s", table, server));<a name="line.179"></a>
-<span class="sourceLineNo">180</span> }<a name="line.180"></a>
-<span class="sourceLineNo">181</span><a name="line.181"></a>
-<span class="sourceLineNo">182</span> @Override<a name="line.182"></a>
-<span class="sourceLineNo">183</span> public void publishReadTiming(String table, String server, long msTime) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> LOG.info(String.format("Read from table:%s on region server:%s in %dms",<a name="line.184"></a>
-<span class="sourceLineNo">185</span> table, server, msTime));<a name="line.185"></a>
-<span class="sourceLineNo">186</span> }<a name="line.186"></a>
-<span class="sourceLineNo">187</span> }<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> * For each column family of the region tries to get one row and outputs the latency, or the<a name="line.190"></a>
-<span class="sourceLineNo">191</span> * failure.<a name="line.191"></a>
-<span class="sourceLineNo">192</span> */<a name="line.192"></a>
-<span class="sourceLineNo">193</span> static class RegionTask implements Callable<Void> {<a name="line.193"></a>
-<span class="sourceLineNo">194</span> public enum TaskType{<a name="line.194"></a>
-<span class="sourceLineNo">195</span> READ, WRITE<a name="line.195"></a>
-<span class="sourceLineNo">196</span> }<a name="line.196"></a>
-<span class="sourceLineNo">197</span> private Connection connection;<a name="line.197"></a>
-<span class="sourceLineNo">198</span> private HRegionInfo region;<a name="line.198"></a>
-<span class="sourceLineNo">199</span> private Sink sink;<a name="line.199"></a>
-<span class="sourceLineNo">200</span> private TaskType taskType;<a name="line.200"></a>
-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span> RegionTask(Connection connection, HRegionInfo region, Sink sink, TaskType taskType) {<a name="line.202"></a>
-<span class="sourceLineNo">203</span> this.connection = connection;<a name="line.203"></a>
-<span class="sourceLineNo">204</span> this.region = region;<a name="line.204"></a>
-<span class="sourceLineNo">205</span> this.sink = sink;<a name="line.205"></a>
-<span class="sourceLineNo">206</span> this.taskType = taskType;<a name="line.206"></a>
-<span class="sourceLineNo">207</span> }<a name="line.207"></a>
-<span class="sourceLineNo">208</span><a name="line.208"></a>
-<span class="sourceLineNo">209</span> @Override<a name="line.209"></a>
-<span class="sourceLineNo">210</span> public Void call() {<a name="line.210"></a>
-<span class="sourceLineNo">211</span> switch (taskType) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> case READ:<a name="line.212"></a>
-<span class="sourceLineNo">213</span> return read();<a name="line.213"></a>
-<span class="sourceLineNo">214</span> case WRITE:<a name="line.214"></a>
-<span class="sourceLineNo">215</span> return write();<a name="line.215"></a>
-<span class="sourceLineNo">216</span> default:<a name="line.216"></a>
-<span class="sourceLineNo">217</span> return read();<a name="line.217"></a>
-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span> }<a name="line.219"></a>
-<span class="sourceLineNo">220</span><a name="line.220"></a>
-<span class="sourceLineNo">221</span> public Void read() {<a name="line.221"></a>
-<span class="sourceLineNo">222</span> Table table = null;<a name="line.222"></a>
-<span class="sourceLineNo">223</span> HTableDescriptor tableDesc = null;<a name="line.223"></a>
-<span class="sourceLineNo">224</span> try {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> if (LOG.isDebugEnabled()) {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> LOG.debug(String.format("reading table descriptor for table %s",<a name="line.226"></a>
-<span class="sourceLineNo">227</span> region.getTable()));<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
-<span class="sourceLineNo">229</span> table = connection.getTable(region.getTable());<a name="line.229"></a>
-<span class="sourceLineNo">230</span> tableDesc = table.getTableDescriptor();<a name="line.230"></a>
-<span class="sourceLineNo">231</span> } catch (IOException e) {<a name="line.231"></a>
-<span class="sourceLineNo">232</span> LOG.debug("sniffRegion failed", e);<a name="line.232"></a>
-<span class="sourceLineNo">233</span> sink.publishReadFailure(region, e);<a name="line.233"></a>
-<span class="sourceLineNo">234</span> if (table != null) {<a name="line.234"></a>
-<span class="sourceLineNo">235</span> try {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> table.close();<a name="line.236"></a>
-<span class="sourceLineNo">237</span> } catch (IOException ioe) {<a name="line.237"></a>
-<span class="sourceLineNo">238</span> LOG.error("Close table failed", e);<a name="line.238"></a>
-<span class="sourceLineNo">239</span> }<a name="line.239"></a>
-<span class="sourceLineNo">240</span> }<a name="line.240"></a>
-<span class="sourceLineNo">241</span> return null;<a name="line.241"></a>
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-<span class="sourceLineNo">243</span><a name="line.243"></a>
-<span class="sourceLineNo">244</span> byte[] startKey = null;<a name="line.244"></a>
-<span class="sourceLineNo">245</span> Get get = null;<a name="line.245"></a>
-<span class="sourceLineNo">246</span> Scan scan = null;<a name="line.246"></a>
-<span class="sourceLineNo">247</span> ResultScanner rs = null;<a name="line.247"></a>
-<span class="sourceLineNo">248</span> StopWatch stopWatch = new StopWatch();<a name="line.248"></a>
-<span class="sourceLineNo">249</span> for (HColumnDescriptor column : tableDesc.getColumnFamilies()) {<a name="line.249"></a>
-<span class="sourceLineNo">250</span> stopWatch.reset();<a name="line.250"></a>
-<span class="sourceLineNo">251</span> startKey = region.getStartKey();<a name="line.251"></a>
-<span class="sourceLineNo">252</span> // Can't do a get on empty start row so do a Scan of first element if any instead.<a name="line.252"></a>
-<span class="sourceLineNo">253</span> if (startKey.length > 0) {<a name="line.253"></a>
-<span class="sourceLineNo">254</span> get = new Get(startKey);<a name="line.254"></a>
-<span class="sourceLineNo">255</span> get.setCacheBlocks(false);<a name="line.255"></a>
-<span class="sourceLineNo">256</span> get.setFilter(new FirstKeyOnlyFilter());<a name="line.256"></a>
-<span class="sourceLineNo">257</span> get.addFamily(column.getName());<a name="line.257"></a>
-<span class="sourceLineNo">258</span> } else {<a name="line.258"></a>
-<span class="sourceLineNo">259</span> scan = new Scan();<a name="line.259"></a>
-<span class="sourceLineNo">260</span> scan.setRaw(true);<a name="line.260"></a>
-<span class="sourceLineNo">261</span> scan.setCaching(1);<a name="line.261"></a>
-<span class="sourceLineNo">262</span> scan.setCacheBlocks(false);<a name="line.262"></a>
-<span class="sourceLineNo">263</span> scan.setFilter(new FirstKeyOnlyFilter());<a name="line.263"></a>
-<span class="sourceLineNo">264</span> scan.addFamily(column.getName());<a name="line.264"></a>
-<span class="sourceLineNo">265</span> scan.setMaxResultSize(1L);<a name="line.265"></a>
-<span class="sourceLineNo">266</span> scan.setSmall(true);<a name="line.266"></a>
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-<span class="sourceLineNo">268</span><a name="line.268"></a>
-<span class="sourceLineNo">269</span> if (LOG.isDebugEnabled()) {<a name="line.269"></a>
-<span class="sourceLineNo">270</span> LOG.debug(String.format("reading from table %s region %s column family %s and key %s",<a name="line.270"></a>
-<span class="sourceLineNo">271</span> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(),<a name="line.271"></a>
-<span class="sourceLineNo">272</span> Bytes.toStringBinary(startKey)));<a name="line.272"></a>
-<span class="sourceLineNo">273</span> }<a name="line.273"></a>
-<span class="sourceLineNo">274</span> try {<a name="line.274"></a>
-<span class="sourceLineNo">275</span> stopWatch.start();<a name="line.275"></a>
-<span class="sourceLineNo">276</span> if (startKey.length > 0) {<a name="line.276"></a>
-<span class="sourceLineNo">277</span> table.get(get);<a name="line.277"></a>
-<span class="sourceLineNo">278</span> } else {<a name="line.278"></a>
-<span class="sourceLineNo">279</span> rs = table.getScanner(scan);<a name="line.279"></a>
-<span class="sourceLineNo">280</span> rs.next();<a name="line.280"></a>
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