http://git-wip-us.apache.org/repos/asf/hbase-site/blob/40ef21e4/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Sink.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Sink.html b/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Sink.html index 1830775..d3abe39 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Sink.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.Sink.html @@ -84,1126 +84,1172 @@ <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.Tool;<a name="line.79"></a> -<span class="sourceLineNo">080</span>import org.apache.hadoop.util.ToolRunner;<a name="line.80"></a> -<span class="sourceLineNo">081</span><a name="line.81"></a> -<span class="sourceLineNo">082</span>/**<a name="line.82"></a> -<span class="sourceLineNo">083</span> * HBase Canary Tool, that that can be used to do<a name="line.83"></a> -<span class="sourceLineNo">084</span> * "canary monitoring" of a running HBase cluster.<a name="line.84"></a> -<span class="sourceLineNo">085</span> *<a name="line.85"></a> -<span class="sourceLineNo">086</span> * Here are two modes<a name="line.86"></a> -<span class="sourceLineNo">087</span> * 1. region mode - Foreach region tries to get one row per column family<a name="line.87"></a> -<span class="sourceLineNo">088</span> * and outputs some information about failure or latency.<a name="line.88"></a> -<span class="sourceLineNo">089</span> *<a name="line.89"></a> -<span class="sourceLineNo">090</span> * 2. regionserver mode - Foreach regionserver tries to get one row from one table<a name="line.90"></a> -<span class="sourceLineNo">091</span> * selected randomly and outputs some information about failure or latency.<a name="line.91"></a> -<span class="sourceLineNo">092</span> */<a name="line.92"></a> -<span class="sourceLineNo">093</span>public final class Canary implements Tool {<a name="line.93"></a> -<span class="sourceLineNo">094</span> // Sink interface used by the canary to outputs information<a name="line.94"></a> -<span class="sourceLineNo">095</span> public interface Sink {<a name="line.95"></a> -<span class="sourceLineNo">096</span> public void publishReadFailure(HRegionInfo region, Exception e);<a name="line.96"></a> -<span class="sourceLineNo">097</span> public void publishReadFailure(HRegionInfo region, HColumnDescriptor column, Exception e);<a name="line.97"></a> -<span class="sourceLineNo">098</span> public void publishReadTiming(HRegionInfo region, HColumnDescriptor column, long msTime);<a name="line.98"></a> -<span class="sourceLineNo">099</span> public void publishWriteFailure(HRegionInfo region, Exception e);<a name="line.99"></a> -<span class="sourceLineNo">100</span> public void publishWriteFailure(HRegionInfo region, HColumnDescriptor column, Exception e);<a name="line.100"></a> -<span class="sourceLineNo">101</span> public void publishWriteTiming(HRegionInfo region, HColumnDescriptor column, long msTime);<a name="line.101"></a> -<span class="sourceLineNo">102</span> }<a name="line.102"></a> -<span class="sourceLineNo">103</span> // new extended sink for output regionserver mode info<a name="line.103"></a> -<span class="sourceLineNo">104</span> // do not change the Sink interface directly due to maintaining the API<a name="line.104"></a> -<span class="sourceLineNo">105</span> public interface ExtendedSink extends Sink {<a name="line.105"></a> -<span class="sourceLineNo">106</span> public void publishReadFailure(String table, String server);<a name="line.106"></a> -<span class="sourceLineNo">107</span> public void publishReadTiming(String table, String server, long msTime);<a name="line.107"></a> -<span class="sourceLineNo">108</span> }<a name="line.108"></a> -<span class="sourceLineNo">109</span><a name="line.109"></a> -<span class="sourceLineNo">110</span> // Simple implementation of canary sink that allows to plot on<a name="line.110"></a> -<span class="sourceLineNo">111</span> // file or standard output timings or failures.<a name="line.111"></a> -<span class="sourceLineNo">112</span> public static class StdOutSink implements Sink {<a name="line.112"></a> -<span class="sourceLineNo">113</span> @Override<a name="line.113"></a> -<span class="sourceLineNo">114</span> public void publishReadFailure(HRegionInfo region, Exception e) {<a name="line.114"></a> -<span class="sourceLineNo">115</span> LOG.error(String.format("read from region %s failed", region.getRegionNameAsString()), e);<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> @Override<a name="line.118"></a> -<span class="sourceLineNo">119</span> public void publishReadFailure(HRegionInfo region, HColumnDescriptor column, Exception e) {<a name="line.119"></a> -<span class="sourceLineNo">120</span> LOG.error(String.format("read from region %s column family %s failed",<a name="line.120"></a> -<span class="sourceLineNo">121</span> region.getRegionNameAsString(), column.getNameAsString()), e);<a name="line.121"></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 void publishReadFailure(HRegionInfo region, Exception e);<a name="line.98"></a> +<span class="sourceLineNo">099</span> public void publishReadFailure(HRegionInfo region, HColumnDescriptor column, Exception e);<a name="line.99"></a> +<span class="sourceLineNo">100</span> public void publishReadTiming(HRegionInfo region, HColumnDescriptor column, long msTime);<a name="line.100"></a> +<span class="sourceLineNo">101</span> public long getWriteFailureCount();<a name="line.101"></a> +<span class="sourceLineNo">102</span> public void publishWriteFailure(HRegionInfo region, Exception e);<a name="line.102"></a> +<span class="sourceLineNo">103</span> public void publishWriteFailure(HRegionInfo region, HColumnDescriptor column, Exception e);<a name="line.103"></a> +<span class="sourceLineNo">104</span> public void publishWriteTiming(HRegionInfo region, HColumnDescriptor column, long msTime);<a name="line.104"></a> +<span class="sourceLineNo">105</span> }<a name="line.105"></a> +<span class="sourceLineNo">106</span> // new extended sink for output regionserver mode info<a name="line.106"></a> +<span class="sourceLineNo">107</span> // do not change the Sink interface directly due to maintaining the API<a name="line.107"></a> +<span class="sourceLineNo">108</span> public interface ExtendedSink extends Sink {<a name="line.108"></a> +<span class="sourceLineNo">109</span> public void publishReadFailure(String table, String server);<a name="line.109"></a> +<span class="sourceLineNo">110</span> public void publishReadTiming(String table, String server, long msTime);<a name="line.110"></a> +<span class="sourceLineNo">111</span> }<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> // Simple implementation of canary sink that allows to plot on<a name="line.113"></a> +<span class="sourceLineNo">114</span> // file or standard output timings or failures.<a name="line.114"></a> +<span class="sourceLineNo">115</span> public static class StdOutSink implements Sink {<a name="line.115"></a> +<span class="sourceLineNo">116</span> protected AtomicLong readFailureCount = new AtomicLong(0),<a name="line.116"></a> +<span class="sourceLineNo">117</span> writeFailureCount = new AtomicLong(0);<a name="line.117"></a> +<span class="sourceLineNo">118</span><a name="line.118"></a> +<span class="sourceLineNo">119</span> @Override<a name="line.119"></a> +<span class="sourceLineNo">120</span> public long getReadFailureCount() {<a name="line.120"></a> +<span class="sourceLineNo">121</span> return readFailureCount.get();<a name="line.121"></a> <span class="sourceLineNo">122</span> }<a name="line.122"></a> <span class="sourceLineNo">123</span><a name="line.123"></a> <span class="sourceLineNo">124</span> @Override<a name="line.124"></a> -<span class="sourceLineNo">125</span> public void publishReadTiming(HRegionInfo region, HColumnDescriptor column, long msTime) {<a name="line.125"></a> -<span class="sourceLineNo">126</span> LOG.info(String.format("read from region %s column family %s in %dms",<a name="line.126"></a> -<span class="sourceLineNo">127</span> region.getRegionNameAsString(), column.getNameAsString(), msTime));<a name="line.127"></a> +<span class="sourceLineNo">125</span> public void publishReadFailure(HRegionInfo region, Exception e) {<a name="line.125"></a> +<span class="sourceLineNo">126</span> readFailureCount.incrementAndGet();<a name="line.126"></a> +<span class="sourceLineNo">127</span> LOG.error(String.format("read from region %s failed", region.getRegionNameAsString()), e);<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 publishWriteFailure(HRegionInfo region, Exception e) {<a name="line.131"></a> -<span class="sourceLineNo">132</span> LOG.error(String.format("write to region %s failed", region.getRegionNameAsString()), e);<a name="line.132"></a> -<span class="sourceLineNo">133</span> }<a name="line.133"></a> -<span class="sourceLineNo">134</span><a name="line.134"></a> -<span class="sourceLineNo">135</span> @Override<a name="line.135"></a> -<span class="sourceLineNo">136</span> public void publishWriteFailure(HRegionInfo region, HColumnDescriptor column, Exception e) {<a name="line.136"></a> -<span class="sourceLineNo">137</span> LOG.error(String.format("write to region %s column family %s failed",<a name="line.137"></a> -<span class="sourceLineNo">138</span> region.getRegionNameAsString(), column.getNameAsString()), e);<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> @Override<a name="line.141"></a> -<span class="sourceLineNo">142</span> public void publishWriteTiming(HRegionInfo region, HColumnDescriptor column, long msTime) {<a name="line.142"></a> -<span class="sourceLineNo">143</span> LOG.info(String.format("write to region %s column family %s in %dms",<a name="line.143"></a> -<span class="sourceLineNo">144</span> region.getRegionNameAsString(), column.getNameAsString(), msTime));<a name="line.144"></a> -<span class="sourceLineNo">145</span> }<a name="line.145"></a> -<span class="sourceLineNo">146</span> }<a name="line.146"></a> -<span class="sourceLineNo">147</span> // a ExtendedSink implementation<a name="line.147"></a> -<span class="sourceLineNo">148</span> public static class RegionServerStdOutSink extends StdOutSink implements ExtendedSink {<a name="line.148"></a> -<span class="sourceLineNo">149</span><a name="line.149"></a> -<span class="sourceLineNo">150</span> @Override<a name="line.150"></a> -<span class="sourceLineNo">151</span> public void publishReadFailure(String table, String server) {<a name="line.151"></a> -<span class="sourceLineNo">152</span> LOG.error(String.format("Read from table:%s on region server:%s", table, server));<a name="line.152"></a> -<span class="sourceLineNo">153</span> }<a name="line.153"></a> -<span class="sourceLineNo">154</span><a name="line.154"></a> -<span class="sourceLineNo">155</span> @Override<a name="line.155"></a> -<span class="sourceLineNo">156</span> public void publishReadTiming(String table, String server, long msTime) {<a name="line.156"></a> -<span class="sourceLineNo">157</span> LOG.info(String.format("Read from table:%s on region server:%s in %dms",<a name="line.157"></a> -<span class="sourceLineNo">158</span> table, server, msTime));<a name="line.158"></a> +<span class="sourceLineNo">131</span> public void publishReadFailure(HRegionInfo region, HColumnDescriptor column, 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 column family %s failed",<a name="line.133"></a> +<span class="sourceLineNo">134</span> region.getRegionNameAsString(), column.getNameAsString()), e);<a name="line.134"></a> +<span class="sourceLineNo">135</span> }<a name="line.135"></a> +<span class="sourceLineNo">136</span><a name="line.136"></a> +<span class="sourceLineNo">137</span> @Override<a name="line.137"></a> +<span class="sourceLineNo">138</span> public void publishReadTiming(HRegionInfo region, HColumnDescriptor column, long msTime) {<a name="line.138"></a> +<span class="sourceLineNo">139</span> LOG.info(String.format("read from region %s column family %s in %dms",<a name="line.139"></a> +<span class="sourceLineNo">140</span> region.getRegionNameAsString(), column.getNameAsString(), msTime));<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 long getWriteFailureCount() {<a name="line.144"></a> +<span class="sourceLineNo">145</span> return writeFailureCount.get();<a name="line.145"></a> +<span class="sourceLineNo">146</span> }<a name="line.146"></a> +<span class="sourceLineNo">147</span><a name="line.147"></a> +<span class="sourceLineNo">148</span> @Override<a name="line.148"></a> +<span class="sourceLineNo">149</span> public void publishWriteFailure(HRegionInfo region, Exception e) {<a name="line.149"></a> +<span class="sourceLineNo">150</span> writeFailureCount.incrementAndGet();<a name="line.150"></a> +<span class="sourceLineNo">151</span> LOG.error(String.format("write to region %s failed", region.getRegionNameAsString()), e);<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, HColumnDescriptor column, 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 column family %s failed",<a name="line.157"></a> +<span class="sourceLineNo">158</span> region.getRegionNameAsString(), column.getNameAsString()), e);<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><a name="line.161"></a> -<span class="sourceLineNo">162</span> /**<a name="line.162"></a> -<span class="sourceLineNo">163</span> * For each column family of the region tries to get one row and outputs the latency, or the<a name="line.163"></a> -<span class="sourceLineNo">164</span> * failure.<a name="line.164"></a> -<span class="sourceLineNo">165</span> */<a name="line.165"></a> -<span class="sourceLineNo">166</span> static class RegionTask implements Callable<Void> {<a name="line.166"></a> -<span class="sourceLineNo">167</span> public enum TaskType{<a name="line.167"></a> -<span class="sourceLineNo">168</span> READ, WRITE<a name="line.168"></a> -<span class="sourceLineNo">169</span> }<a name="line.169"></a> -<span class="sourceLineNo">170</span> private Connection connection;<a name="line.170"></a> -<span class="sourceLineNo">171</span> private HRegionInfo region;<a name="line.171"></a> -<span class="sourceLineNo">172</span> private Sink sink;<a name="line.172"></a> -<span class="sourceLineNo">173</span> private TaskType taskType;<a name="line.173"></a> -<span class="sourceLineNo">174</span><a name="line.174"></a> -<span class="sourceLineNo">175</span> RegionTask(Connection connection, HRegionInfo region, Sink sink, TaskType taskType) {<a name="line.175"></a> -<span class="sourceLineNo">176</span> this.connection = connection;<a name="line.176"></a> -<span class="sourceLineNo">177</span> this.region = region;<a name="line.177"></a> -<span class="sourceLineNo">178</span> this.sink = sink;<a name="line.178"></a> -<span class="sourceLineNo">179</span> this.taskType = taskType;<a name="line.179"></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 publishWriteTiming(HRegionInfo region, HColumnDescriptor column, long msTime) {<a name="line.162"></a> +<span class="sourceLineNo">163</span> LOG.info(String.format("write to region %s column family %s in %dms",<a name="line.163"></a> +<span class="sourceLineNo">164</span> region.getRegionNameAsString(), column.getNameAsString(), msTime));<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> // a ExtendedSink implementation<a name="line.167"></a> +<span class="sourceLineNo">168</span> public static class RegionServerStdOutSink extends StdOutSink implements ExtendedSink {<a name="line.168"></a> +<span class="sourceLineNo">169</span><a name="line.169"></a> +<span class="sourceLineNo">170</span> @Override<a name="line.170"></a> +<span class="sourceLineNo">171</span> public void publishReadFailure(String table, String server) {<a name="line.171"></a> +<span class="sourceLineNo">172</span> readFailureCount.incrementAndGet();<a name="line.172"></a> +<span class="sourceLineNo">173</span> LOG.error(String.format("Read from table:%s on region server:%s", table, server));<a name="line.173"></a> +<span class="sourceLineNo">174</span> }<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 publishReadTiming(String table, String server, long msTime) {<a name="line.177"></a> +<span class="sourceLineNo">178</span> LOG.info(String.format("Read from table:%s on region server:%s in %dms",<a name="line.178"></a> +<span class="sourceLineNo">179</span> table, server, msTime));<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 call() {<a name="line.183"></a> -<span class="sourceLineNo">184</span> switch (taskType) {<a name="line.184"></a> -<span class="sourceLineNo">185</span> case READ:<a name="line.185"></a> -<span class="sourceLineNo">186</span> return read();<a name="line.186"></a> -<span class="sourceLineNo">187</span> case WRITE:<a name="line.187"></a> -<span class="sourceLineNo">188</span> return write();<a name="line.188"></a> -<span class="sourceLineNo">189</span> default:<a name="line.189"></a> -<span class="sourceLineNo">190</span> return read();<a name="line.190"></a> -<span class="sourceLineNo">191</span> }<a name="line.191"></a> -<span class="sourceLineNo">192</span> }<a name="line.192"></a> -<span class="sourceLineNo">193</span><a name="line.193"></a> -<span class="sourceLineNo">194</span> public Void read() {<a name="line.194"></a> -<span class="sourceLineNo">195</span> Table table = null;<a name="line.195"></a> -<span class="sourceLineNo">196</span> HTableDescriptor tableDesc = null;<a name="line.196"></a> -<span class="sourceLineNo">197</span> try {<a name="line.197"></a> -<span class="sourceLineNo">198</span> if (LOG.isDebugEnabled()) {<a name="line.198"></a> -<span class="sourceLineNo">199</span> LOG.debug(String.format("reading table descriptor for table %s",<a name="line.199"></a> -<span class="sourceLineNo">200</span> region.getTable()));<a name="line.200"></a> -<span class="sourceLineNo">201</span> }<a name="line.201"></a> -<span class="sourceLineNo">202</span> table = connection.getTable(region.getTable());<a name="line.202"></a> -<span class="sourceLineNo">203</span> tableDesc = table.getTableDescriptor();<a name="line.203"></a> -<span class="sourceLineNo">204</span> } catch (IOException e) {<a name="line.204"></a> -<span class="sourceLineNo">205</span> LOG.debug("sniffRegion failed", e);<a name="line.205"></a> -<span 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-<span class="sourceLineNo">219</span> Scan scan = null;<a name="line.219"></a> -<span class="sourceLineNo">220</span> ResultScanner rs = null;<a name="line.220"></a> -<span class="sourceLineNo">221</span> StopWatch stopWatch = new StopWatch();<a name="line.221"></a> -<span class="sourceLineNo">222</span> for (HColumnDescriptor column : tableDesc.getColumnFamilies()) {<a name="line.222"></a> -<span class="sourceLineNo">223</span> stopWatch.reset();<a name="line.223"></a> -<span class="sourceLineNo">224</span> startKey = region.getStartKey();<a name="line.224"></a> -<span class="sourceLineNo">225</span> // Can't do a get on empty start row so do a Scan of first element if any instead.<a name="line.225"></a> -<span class="sourceLineNo">226</span> if (startKey.length > 0) {<a name="line.226"></a> -<span class="sourceLineNo">227</span> get = new Get(startKey);<a name="line.227"></a> -<span class="sourceLineNo">228</span> get.setCacheBlocks(false);<a name="line.228"></a> -<span 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static final int INIT_ERROR_EXIT_CODE = 2;<a name="line.411"></a> -<span class="sourceLineNo">412</span> private static final int TIMEOUT_ERROR_EXIT_CODE = 3;<a name="line.412"></a> -<span class="sourceLineNo">413</span> private static final int ERROR_EXIT_CODE = 4;<a name="line.413"></a> -<span class="sourceLineNo">414</span><a name="line.414"></a> -<span class="sourceLineNo">415</span> private static final long DEFAULT_INTERVAL = 6000;<a name="line.415"></a> -<span class="sourceLineNo">416</span><a name="line.416"></a> -<span class="sourceLineNo">417</span> private static final long DEFAULT_TIMEOUT = 600000; // 10 mins<a name="line.417"></a> -<span class="sourceLineNo">418</span> private static final int MAX_THREADS_NUM = 16; // #threads to contact regions<a name="line.418"></a> -<span class="sourceLineNo">419</span><a name="line.419"></a> -<span class="sourceLineNo">420</span> private static final Log LOG = LogFactory.getLog(Canary.class);<a name="line.420"></a> -<span class="sourceLineNo">421</span><a name="line.421"></a> -<span class="sourceLineNo">422</span> public static final TableName DEFAULT_WRITE_TABLE_NAME = TableName.valueOf(<a name="line.422"></a> -<span class="sourceLineNo">423</span> NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR, "canary");<a name="line.423"></a> -<span class="sourceLineNo">424</span><a name="line.424"></a> -<span class="sourceLineNo">425</span> private static final String CANARY_TABLE_FAMILY_NAME = "Test";<a name="line.425"></a> -<span class="sourceLineNo">426</span><a name="line.426"></a> -<span class="sourceLineNo">427</span> private Configuration conf = null;<a name="line.427"></a> -<span class="sourceLineNo">428</span> private long interval = 0;<a name="line.428"></a> -<span class="sourceLineNo">429</span> private Sink sink = null;<a name="line.429"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span><a name="line.182"></a> +<span class="sourceLineNo">183</span> /**<a name="line.183"></a> +<span class="sourceLineNo">184</span> * For each column family of the region tries to get one row and outputs the latency, or the<a name="line.184"></a> +<span class="sourceLineNo">185</span> * failure.<a name="line.185"></a> +<span class="sourceLineNo">186</span> */<a name="line.186"></a> +<span class="sourceLineNo">187</span> static class RegionTask implements Callable<Void> {<a name="line.187"></a> +<span class="sourceLineNo">188</span> public enum TaskType{<a name="line.188"></a> +<span class="sourceLineNo">189</span> READ, WRITE<a name="line.189"></a> +<span class="sourceLineNo">190</span> }<a name="line.190"></a> +<span class="sourceLineNo">191</span> private Connection connection;<a name="line.191"></a> +<span class="sourceLineNo">192</span> private HRegionInfo region;<a name="line.192"></a> +<span class="sourceLineNo">193</span> private Sink sink;<a name="line.193"></a> +<span class="sourceLineNo">194</span> private TaskType taskType;<a name="line.194"></a> +<span class="sourceLineNo">195</span><a name="line.195"></a> +<span class="sourceLineNo">196</span> RegionTask(Connection connection, HRegionInfo region, Sink sink, TaskType taskType) {<a name="line.196"></a> +<span class="sourceLineNo">197</span> this.connection = connection;<a name="line.197"></a> +<span class="sourceLineNo">198</span> this.region = region;<a name="line.198"></a> +<span class="sourceLineNo">199</span> this.sink = sink;<a name="line.199"></a> +<span class="sourceLineNo">200</span> this.taskType = taskType;<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> @Override<a name="line.203"></a> +<span class="sourceLineNo">204</span> public Void call() {<a name="line.204"></a> +<span class="sourceLineNo">205</span> switch (taskType) {<a name="line.205"></a> +<span class="sourceLineNo">206</span> case READ:<a name="line.206"></a> +<span class="sourceLineNo">207</span> return read();<a name="line.207"></a> +<span class="sourceLineNo">208</span> case WRITE:<a name="line.208"></a> +<span class="sourceLineNo">209</span> return write();<a name="line.209"></a> +<span class="sourceLineNo">210</span> default:<a name="line.210"></a> +<span class="sourceLineNo">211</span> return read();<a name="line.211"></a> +<span class="sourceLineNo">212</span> }<a name="line.212"></a> +<span class="sourceLineNo">213</span> }<a name="line.213"></a> +<span class="sourceLineNo">214</span><a name="line.214"></a> +<span class="sourceLineNo">215</span> public Void read() {<a name="line.215"></a> +<span class="sourceLineNo">216</span> Table table = null;<a name="line.216"></a> +<span class="sourceLineNo">217</span> HTableDescriptor tableDesc = null;<a name="line.217"></a> +<span class="sourceLineNo">218</span> try {<a name="line.218"></a> +<span class="sourceLineNo">219</span> if (LOG.isDebugEnabled()) {<a name="line.219"></a> +<span class="sourceLineNo">220</span> LOG.debug(String.format("reading table descriptor for table %s",<a name="line.220"></a> +<span class="sourceLineNo">221</span> region.getTable()));<a name="line.221"></a> +<span class="sourceLineNo">222</span> }<a name="line.222"></a> +<span class="sourceLineNo">223</span> table = connection.getTable(region.getTable());<a name="line.223"></a> +<span class="sourceLineNo">224</span> tableDesc = table.getTableDescriptor();<a name="line.224"></a> +<span class="sourceLineNo">225</span> } catch (IOException e) {<a name="line.225"></a> +<span class="sourceLineNo">226</span> LOG.debug("sniffRegion failed", e);<a name="line.226"></a> +<span class="sourceLineNo">227</span> sink.publishReadFailure(region, e);<a name="line.227"></a> +<span class="sourceLineNo">228</span> if (table != null) {<a name="line.228"></a> +<span class="sourceLineNo">229</span> try {<a name="line.229"></a> +<span class="sourceLineNo">230</span> table.close();<a name="line.230"></a> +<span class="sourceLineNo">231</span> } catch (IOException ioe) {<a name="line.231"></a> +<span class="sourceLineNo">232</span> LOG.error("Close table failed", e);<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> return null;<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span><a name="line.237"></a> +<span class="sourceLineNo">238</span> byte[] startKey = null;<a name="line.238"></a> +<span class="sourceLineNo">239</span> Get get = null;<a name="line.239"></a> +<span class="sourceLineNo">240</span> Scan scan = null;<a name="line.240"></a> +<span class="sourceLineNo">241</span> ResultScanner rs = null;<a name="line.241"></a> +<span class="sourceLineNo">242</span> StopWatch stopWatch = new StopWatch();<a name="line.242"></a> +<span class="sourceLineNo">243</span> for (HColumnDescriptor column : tableDesc.getColumnFamilies()) {<a name="line.243"></a> +<span class="sourceLineNo">244</span> stopWatch.reset();<a name="line.244"></a> +<span class="sourceLineNo">245</span> startKey = region.getStartKey();<a name="line.245"></a> +<span class="sourceLineNo">246</span> // Can't do a get on empty start row so do a Scan of first element if any instead.<a name="line.246"></a> +<span class="sourceLineNo">247</span> if (startKey.length > 0) {<a name="line.247"></a> +<span class="sourceLineNo">248</span> get = new Get(startKey);<a name="line.248"></a> +<span class="sourceLineNo">249</span> get.setCacheBlocks(false);<a name="line.249"></a> +<span class="sourceLineNo">250</span> get.setFilter(new FirstKeyOnlyFilter());<a name="line.250"></a> +<span class="sourceLineNo">251</span> get.addFamily(column.getName());<a name="line.251"></a> +<span class="sourceLineNo">252</span> } else {<a name="line.252"></a> +<span class="sourceLineNo">253</span> scan = new Scan();<a name="line.253"></a> +<span class="sourceLineNo">254</span> scan.setRaw(true);<a name="line.254"></a> +<span class="sourceLineNo">255</span> scan.setCaching(1);<a name="line.255"></a> +<span class="sourceLineNo">256</span> scan.setCacheBlocks(false);<a name="line.256"></a> +<span class="sourceLineNo">257</span> scan.setFilter(new FirstKeyOnlyFilter());<a name="line.257"></a> +<span class="sourceLineNo">258</span> scan.addFamily(column.getName());<a name="line.258"></a> +<span class="sourceLineNo">259</span> scan.setMaxResultSize(1L);<a name="line.259"></a> +<span class="sourceLineNo">260</span> scan.setSmall(true);<a name="line.260"></a> +<span class="sourceLineNo">261</span> }<a name="line.261"></a> +<span class="sourceLineNo">262</span><a name="line.262"></a> +<span class="sourceLineNo">263</span> if (LOG.isDebugEnabled()) {<a name="line.263"></a> +<span class="sourceLineNo">264</span> LOG.debug(String.format("reading from table %s region %s column family %s and key %s",<a name="line.264"></a> +<span class="sourceLineNo">265</span> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(),<a name="line.265"></a> +<span class="sourceLineNo">266</span> Bytes.toStringBinary(startKey)));<a name="line.266"></a> +<span class="sourceLineNo">267</span> }<a name="line.267"></a> +<span class="sourceLineNo">268</span> try {<a name="line.268"></a> +<span class="sourceLineNo">269</span> stopWatch.start();<a name="line.269"></a> +<span class="sourceLineNo">270</span> if (startKey.length > 0) {<a name="line.270"></a> +<span class="sourceLineNo">271</span> table.get(get);<a name="line.271"></a> +<span class="sourceLineNo">272</span> } else {<a name="line.272"></a> +<span class="sourceLineNo">273</span> rs = table.getScanner(scan);<a name="line.273"></a> +<span class="sourceLineNo">274</span> rs.next();<a name="line.274"></a> +<span class="sourceLineNo">275</span> }<a name="line.275"></a> +<span class="sourceLineNo">276</span> stopWatch.stop();<a name="line.276"></a> +<span class="sourceLineNo">277</span> sink.publishReadTiming(region, column, stopWatch.getTime());<a name="line.277"></a> +<span class="sourceLineNo">278</span> } catch (Exception e) {<a name="line.278"></a> +<span class="sourceLineNo">279</span> sink.publishReadFailure(region, column, e);<a name="line.279"></a> +<span class="sourceLineNo">280</span> } finally {<a name="line.280"></a> +<span class="sourceLineNo">281</span> if (rs != null) {<a name="line.281"></a> +<span class="sourceLineNo">282</span> rs.close();<a name="line.282"></a> +<span class="sourceLineNo">283</span> }<a name="line.283"></a> +<span class="sourceLineNo">284</span> scan = null;<a name="line.284"></a> +<span class="sourceLineNo">285</span> get = null;<a name="line.285"></a> +<span class="sourceLineNo">286</span> startKey = null;<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> +<span class="sourceLineNo">289</span> try {<a name="line.289"></a> +<span class="sourceLineNo">290</span> table.close();<a name="line.290"></a> +<span class="sourceLineNo">291</span> } catch (IOException e) {<a name="line.291"></a> +<span class="sourceLineNo">292</span> LOG.error("Close table failed", e);<a name="line.292"></a> +<span class="sourceLineNo">293</span> }<a name="line.293"></a> +<span class="sourceLineNo">294</span> return null;<a name="line.294"></a> +<span class="sourceLineNo">295</span> }<a name="line.295"></a> +<span class="sourceLineNo">296</span><a name="line.296"></a> +<span class="sourceLineNo">297</span> /**<a name="line.297"></a> +<span class="sourceLineNo">298</span> * Check writes for the canary table<a name="line.298"></a> +<span class="sourceLineNo">299</span> * @return<a name="line.299"></a> +<span class="sourceLineNo">300</span> */<a name="line.300"></a> +<span class="sourceLineNo">301</span> private Void write() {<a name="line.301"></a> +<span class="sourceLineNo">302</span> Table table = null;<a name="line.302"></a> +<span class="sourceLineNo">303</span> HTableDescriptor tableDesc = null;<a name="line.303"></a> +<span class="sourceLineNo">304</span> try {<a name="line.304"></a> +<span class="sourceLineNo">305</span> table = connection.getTable(region.getTable());<a name="line.305"></a> +<span class="sourceLineNo">306</span> tableDesc = table.getTableDescriptor();<a name="line.306"></a> +<span class="sourceLineNo">307</span> byte[] rowToCheck = region.getStartKey();<a name="line.307"></a> +<span class="sourceLineNo">308</span> if (rowToCheck.length == 0) {<a name="line.308"></a> +<span class="sourceLineNo">309</span> rowToCheck = new byte[]{0x0};<a name="line.309"></a> +<span class="sourceLineNo">310</span> }<a name="line.310"></a> +<span class="sourceLineNo">311</span> int writeValueSize =<a name="line.311"></a> +<span class="sourceLineNo">312</span> connection.getConfiguration().getInt(HConstants.HBASE_CANARY_WRITE_VALUE_SIZE_KEY, 10);<a name="line.312"></a> +<span class="sourceLineNo">313</span> for (HColumnDescriptor column : tableDesc.getColumnFamilies()) {<a name="line.313"></a> +<span class="sourceLineNo">314</span> Put put = new Put(rowToCheck);<a name="line.314"></a> +<span class="sourceLineNo">315</span> byte[] value = new byte[writeValueSize];<a name="line.315"></a> +<span class="sourceLineNo">316</span> Bytes.random(value);<a name="line.316"></a> +<span class="sourceLineNo">317</span> put.addColumn(column.getName(), HConstants.EMPTY_BYTE_ARRAY, value);<a name="line.317"></a> +<span class="sourceLineNo">318</span><a name="line.318"></a> +<span class="sourceLineNo">319</span> if (LOG.isDebugEnabled()) {<a name="line.319"></a> +<span class="sourceLineNo">320</span> LOG.debug(String.format("writing to table %s region %s column family %s and key %s",<a name="line.320"></a> +<span class="sourceLineNo">321</span> tableDesc.getTableName(), region.getRegionNameAsString(), column.getNameAsString(),<a name="line.321"></a> +<span class="sourceLineNo">322</span> Bytes.toStringBinary(rowToCheck)));<a name="line.322"></a> +<span class="sourceLineNo">323</span> }<a name="line.323"></a> +<span class="sourceLineNo">324</span> try {<a name="line.324"></a> +<span class="sourceLineNo">325</span> long startTime = System.currentTimeMillis();<a name="line.325"></a> +<span class="sourceLineNo">326</span> table.put(put);<a name="line.326"></a> +<span class="sourceLineNo">327</span> long time = System.currentTimeMillis() - startTime;<a name="line.327"></a> +<span class="sourceLineNo">328</span> sink.publishWriteTiming(region, column, time);<a name="line.328"></a> +<span class="sourceLineNo">329</span> } catch (Exception e) {<a name="line.329"></a> +<span class="sourceLineNo">330</span> sink.publishWriteFailure(region, column, e);<a name="line.330"></a> +<span class="sourceLineNo">331</span> }<a name="line.331"></a> +<span class="sourceLineNo">332</span> }<a name="line.332"></a> +<span class="sourceLineNo">333</span> table.close();<a name="line.333"></a> +<span class="sourceLineNo">334</span> } catch (IOException e) {<a name="line.334"></a> +<span class="sourceLineNo">335</span> sink.publishWriteFailure(region, e);<a name="line.335"></a> +<span class="sourceLineNo">336</span> }<a name="line.336"></a> +<span class="sourceLineNo">337</span> return null;<a name="line.337"></a> +<span class="sourceLineNo">338</span> }<a name="line.338"></a> +<span class="sourceLineNo">339</span> }<a name="line.339"></a> +<span class="sourceLineNo">340</span><a name="line.340"></a> +<span class="sourceLineNo">341</span> /**<a name="line.341"></a> +<span class="sourceLineNo">342</span> * Get one row from a region on the regionserver and outputs the latency, or the failure.<a name="line.342"></a> +<span class="sourceLineNo">343</span> */<a name="line.343"></a> +<span class="sourceLineNo">344</span> static class RegionServerTask implements Callable<Void> {<a name="line.344"></a> +<span class="sourceLineNo">345</span> private Connection connection;<a name="line.345"></a> +<span class="sourceLineNo">346</span> private String serverName;<a name="line.346"></a> +<span class="sourceLineNo">347</span> private HRegionInfo region;<a name="line.347"></a> +<span class="sourceLineNo">348</span> private ExtendedSink sink;<a name="line.348"></a> +<span class="sourceLineNo">349</span> private AtomicLong successes;<a name="line.349"></a> +<span class="sourceLineNo">350</span><a name="line.350"></a> +<span class="sourceLineNo">351</span> RegionServerTask(Connection connection, String serverName, HRegionInfo region,<a name="line.351"></a> +<span class="sourceLineNo">352</span> ExtendedSink sink, AtomicLong successes) {<a name="line.352"></a> +<span class="sourceLineNo">353</span> this.connection = connection;<a name="line.353"></a> +<span class="sourceLineNo">354</span> this.serverName = serverName;<a name="line.354"></a> +<span class="sourceLineNo">355</span> this.region = region;<a name="line.355"></a> +<span class="sourceLineNo">356</span> this.sink = sink;<a name="line.356"></a> +<span class="sourceLineNo">357</span> this.successes = successes;<a name="line.357"></a> +<span class="sourceLineNo">358</span> }<a name="line.358"></a> +<span class="sourceLineNo">359</span><a name="line.359"></a> +<span class="sourceLineNo">360</span> @Override<a name="line.360"></a> +<span class="sourceLineNo">361</span> public Void call() {<a name="line.361"></a> +<span class="sourceLineNo">362</span> TableName tableName = null;<a name="line.362"></a> +<span class="sourceLineNo">363</span> Table table = null;<a name="line.363"></a> +<span class="sourceLineNo">364</span> Get get = null;<a name="line.364"></a> +<span class="sourceLineNo">365</span> byte[] startKey = null;<a name="line.365"></a> +<span class="sourceLineNo">366</span> Scan scan = null;<a name="line.366"></a> +<span class="sourceLineNo">367</span> StopWatch stopWatch = new StopWatch();<a name="line.367"></a> +<span class="sourceLineNo">368</span> // monitor one region on every region server<a name="line.368"></a> +<span class="sourceLineNo">369</span> stopWatch.reset();<a name="line.369"></a> +<span class="sourceLineNo">370</span> try {<a name="line.370"></a> +<span class="sourceLineNo">371</span> tableName = region.getTable();<a name="line.371"></a> +<span class="sourceLineNo">372</span> table = connection.getTable(tableName);<a name="line.372"></a> +<span class="sourceLineNo">373</span> startKey = region.getStartKey();<a name="line.373"></a> +<span class="sourceLineNo">374</span> // Can't do a get on empty start row so do a Scan of first element if any instead.<a name="line.374"></a> +<span class="sourceLineNo">375</span> if (LOG.isDebugEnabled()) {<a name="line.375"></a> +<span class="sourceLineNo">376</span> LOG.debug(String.format("reading from region server %s table %s region %s and key %s",<a name="line.376"></a> +<span class="sourceLineNo">377</span> serverName, region.getTable(), region.getRegionNameAsString(),<a name="line.377"></a> +<span class="sourceLineNo">378</span> Bytes.toStringBinary(startKey)));<a name="line.378"></a> +<span class="sourceLineNo">379</span> }<a name="line.379"></a> +<span class="sourceLineNo">380</span> if (startKey.length > 0) {<a name="line.380"></a> +<span class="sourceLineNo">381</span> get = new Get(startKey);<a name="line.381"></a> +<span class="sourceLineNo">382</span> get.setCacheBlocks(false);<a name="line.382"></a> +<span class="sourceLineNo">383</span> get.setFilter(new FirstKeyOnlyFilter());<a name="line.383"></a> +<span class="sourceLineNo">384</span> stopWatch.start();<a name="line.384"></a> +<span class="sourceLineNo">385</span> table.get(get);<a name="line.385"></a> +<span class="sourceLineNo">386</span> stopWatch.stop();<a name="line.386"></a> +<span class="sourceLineNo">387</span> } else {<a name="line.387"></a> +<span class="sourceLineNo">388</span> scan = new Scan();<a name="line.388"></a> +<span class="sourceLineNo">389</span> scan.setCacheBlocks(false);<a name="line.389"></a> +<span class="sourceLineNo">390</span> scan.setFilter(new FirstKeyOnlyFilter());<a name="line.390"></a> +<span class="sourceLineNo">391</span> scan.setCaching(1);<a name="line.391"></a> +<span class="sourceLineNo">392</span> scan.setMaxResultSize(1L);<a name="line.392"></a> +<span class="sourceLineNo">393</span> scan.setSmall(true);<a name="line.393"></a> +<span class="sourceLineNo">394</span> stopWatch.start();<a name="line.394"></a> +<span class="sourceLineNo">395</span> ResultScanner s = table.getScanner(scan);<a name="line.395"></a> +<span class="sourceLineNo">396</span> s.next();<a name="line.396"></a> +<span class="sourceLineNo">397</span> s.close();<a name="line.397"></a> +<span class="sourceLineNo">398</span> stopWatch.stop();<a name="line.398"></a> +<span class="sourceLineNo">399</span> }<a name="line.399"></a> +<span class="sourceLineNo">400</span> successes.incrementAndGet();<a name="line.400"></a> +<span class="sourceLineNo">401</span> sink.publishReadTiming(tableName.getNameAsString(), serverName, stopWatch.getTime());<a name="line.401"></a> +<span class="sourceLineNo">402</span> } catch (TableNotFoundException tnfe) {<a name="line.402"></a> +<span class="sourceLineNo">403</span> LOG.error("Table may be deleted", tnfe);<a name="line.403"></a> +<span class="sourceLineNo">404</span> // This is ignored because it doesn't imply that the regionserver is dead<a name="line.404"></a> +<span class="sourceLineNo">405</span> } catch (TableNotEnabledException tnee) {<a name="line.405"></a> +<span class="sourceLineNo">406</span> // This is considered a success since we got a response.<a name="line.406"></a> +<span class="sourceLineNo">407</span> successes.incrementAndGet();<a name="line.407"></a> +<span class="sourceLineNo">408</span> LOG.debug("The targeted table was disabled. Assuming success.");<a name="line.408"></a> +<span class="sourceLineNo">409</span> } catch (DoNotRetryIOException dnrioe) {<a name="line.409"></a> +<span class="sourceLineNo">410</span> sink.publishReadFailure(tableName.getNameAsString(), serverName);<a name="line.410"></a> +<span class="sourceLineNo">411</span> LOG.error(dnrioe);<a name="line.411"></a> +<span class="sourceLineNo">412</span> } catch (IOException e) {<a name="line.412"></a> +<span class="sourceLineNo">413</span> sink.publishReadFailure(tableName.getNameAsString(), serverName);<a name="line.413"></a> +<span class="sourceLineNo">414</span> LOG.error(e);<a name="line.414"></a> +<span class="sourceLineNo">415</span> } finally {<a name="line.415"></a> +<span class="sourceLineNo">416</span> if (table != null) {<a name="line.416"></a> +<span class="sourceLineNo">417</span> try {<a name="line.417"></a> +<span class="sourceLineNo">418</span> table.close();<a name="line.418"></a> +<span class="sourceLineNo">419</span> } catch (IOException e) {/* DO NOTHING */<a name="line.419"></a> +<span class="sourceLineNo">420</span> LOG.error("Close table failed", e);<a name="line.420"></a> +<span class="sourceLineNo">421</span> }<a name="line.421"></a> +<span class="sourceLineNo">422</span> }<a name="line.422"></a> +<span class="sourceLineNo">423</span> scan = null;<a name="line.423"></a> +<span class="sourceLineNo">424</span> get = null;<a name="line.424"></a> +<span class="sourceLineNo">425</span> startKey = null;<a name="line.425"></a> +<span class="sourceLineNo">426</span> }<a name="line.426"></a> +<span class="sourceLineNo">427</span> return null;<a name="line.427"></a> +<span class="sourceLineNo">428</span> }<a name="line.428"></a> +<span class="sourceLineNo">429</span> }<a name="line.429"></a> <span class="sourceLineNo">430</span><a name="line.430"></a> -<span class="sourceLineNo">431</span> private boolean useRegExp;<a name="line.431"></a> -<span class="sourceLineNo">432</span> private long timeout = DEFAULT_TIMEOUT;<a name="line.432"></a> -<span class="sourceLineNo">433</span> private boolean failOnError = true;<a name="line.433"></a> -<span class="sourceLineNo">434</span> private boolean regionServerMode = false;<a name="line.434"></a> -<span class="sourceLineNo">435</span> private boolean regionServerAllRegions = false;<a name="line.435"></a> -<span class="sourceLineNo">436</span> private boolean writeSniffing = false;<a name="line.436"></a> -<span class="sourceLineNo">437</span> private TableName writeTableName = DEFAULT_WRITE_TABLE_NAME;<a name="line.437"></a> -<span class="sourceLineNo">438</span><a name="line.438"></a> -<span class="sourceLineNo">439</span> private ExecutorService executor; // threads to retrieve data from regionservers<a name="line.439"></a> +<span class="sourceLineNo">431</span> private static final int USAGE_EXIT_CODE = 1;<a name="line.431"></a> +<span class="sourceLineNo">432</span> private static final int INIT_ERROR_EXIT_CODE = 2;<a name="line.432"></a> +<span class="sourceLineNo">433</span> private static final int TIMEOUT_ERROR_EXIT_CODE = 3;<a name="line.433"></a> +<span class="sourceLineNo">434</span> private static final int ERROR_EXIT_CODE = 4;<a name="line.434"></a> +<span class="sourceLineNo">435</span><a name="line.435"></a> +<span class="sourceLineNo">436</span> private static final long DEFAULT_INTERVAL = 6000;<a name="line.436"></a> +<span class="sourceLineNo">437</span><a name="line.437"></a> +<span class="sourceLineNo">438</span> private static final long DEFAULT_TIMEOUT = 600000; // 10 mins<a name="line.438"></a> +<span class="sourceLineNo">439</span> private static final int MAX_THREADS_NUM = 16; // #threads to contact regions<a name="line.439"></a> <span class="sourceLineNo">440</span><a name="line.440"></a> -<span class="sourceLineNo">441</span> public Canary() {<a name="line.441"></a> -<span class="sourceLineNo">442</span> this(new ScheduledThreadPoolExecutor(1), new RegionServerStdOutSink());<a 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<TRUNCATED>
