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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/10/17 14:53:30 UTC
[09/35] hbase-site git commit: Published site at
8cc56bd18c40ba9a7131336e97c74f8d97d8b2be.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/713132a3/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.ZookeeperMonitor.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.ZookeeperMonitor.html b/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.ZookeeperMonitor.html
index ce887a2..506bc5c 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.ZookeeperMonitor.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/tool/Canary.ZookeeperMonitor.html
@@ -98,1529 +98,1560 @@
<span class="sourceLineNo">090</span>import org.apache.hadoop.util.GenericOptionsParser;<a name="line.90"></a>
<span class="sourceLineNo">091</span>import org.apache.hadoop.util.Tool;<a name="line.91"></a>
<span class="sourceLineNo">092</span>import org.apache.hadoop.util.ToolRunner;<a name="line.92"></a>
-<span class="sourceLineNo">093</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.93"></a>
-<span class="sourceLineNo">094</span>import org.apache.zookeeper.KeeperException;<a name="line.94"></a>
-<span class="sourceLineNo">095</span>import org.apache.zookeeper.ZooKeeper;<a name="line.95"></a>
-<span class="sourceLineNo">096</span>import org.apache.zookeeper.client.ConnectStringParser;<a name="line.96"></a>
-<span class="sourceLineNo">097</span>import org.apache.zookeeper.data.Stat;<a name="line.97"></a>
-<span class="sourceLineNo">098</span>import org.slf4j.Logger;<a name="line.98"></a>
-<span class="sourceLineNo">099</span>import org.slf4j.LoggerFactory;<a name="line.99"></a>
-<span class="sourceLineNo">100</span><a name="line.100"></a>
-<span class="sourceLineNo">101</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span>/**<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * HBase Canary Tool, that that can be used to do<a name="line.104"></a>
-<span class="sourceLineNo">105</span> * "canary monitoring" of a running HBase cluster.<a name="line.105"></a>
+<span class="sourceLineNo">093</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.93"></a>
+<span class="sourceLineNo">094</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.94"></a>
+<span class="sourceLineNo">095</span>import org.apache.zookeeper.KeeperException;<a name="line.95"></a>
+<span class="sourceLineNo">096</span>import org.apache.zookeeper.ZooKeeper;<a name="line.96"></a>
+<span class="sourceLineNo">097</span>import org.apache.zookeeper.client.ConnectStringParser;<a name="line.97"></a>
+<span class="sourceLineNo">098</span>import org.apache.zookeeper.data.Stat;<a name="line.98"></a>
+<span class="sourceLineNo">099</span>import org.slf4j.Logger;<a name="line.99"></a>
+<span class="sourceLineNo">100</span>import org.slf4j.LoggerFactory;<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span>/**<a name="line.104"></a>
+<span class="sourceLineNo">105</span> * HBase Canary Tool for "canary monitoring" of a running HBase cluster.<a name="line.105"></a>
<span class="sourceLineNo">106</span> *<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * Here are three modes<a name="line.107"></a>
-<span class="sourceLineNo">108</span> * 1. region mode - Foreach region tries to get one row per column family<a name="line.108"></a>
-<span class="sourceLineNo">109</span> * and outputs some information about failure or latency.<a name="line.109"></a>
-<span class="sourceLineNo">110</span> *<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * 2. regionserver mode - Foreach regionserver tries to get one row from one table<a name="line.111"></a>
-<span class="sourceLineNo">112</span> * selected randomly and outputs some information about failure or latency.<a name="line.112"></a>
-<span class="sourceLineNo">113</span> *<a name="line.113"></a>
-<span class="sourceLineNo">114</span> * 3. zookeeper mode - for each zookeeper instance, selects a zNode and<a name="line.114"></a>
-<span class="sourceLineNo">115</span> * outputs some information about failure or latency.<a name="line.115"></a>
-<span class="sourceLineNo">116</span> */<a name="line.116"></a>
-<span class="sourceLineNo">117</span>@InterfaceAudience.Private<a name="line.117"></a>
-<span class="sourceLineNo">118</span>public final class Canary implements Tool {<a name="line.118"></a>
-<span class="sourceLineNo">119</span> // Sink interface used by the canary to outputs information<a name="line.119"></a>
-<span class="sourceLineNo">120</span> public interface Sink {<a name="line.120"></a>
-<span class="sourceLineNo">121</span> public long getReadFailureCount();<a name="line.121"></a>
-<span class="sourceLineNo">122</span> public long incReadFailureCount();<a name="line.122"></a>
-<span class="sourceLineNo">123</span> public Map<String,String> getReadFailures();<a name="line.123"></a>
-<span class="sourceLineNo">124</span> public void updateReadFailures(String regionName, String serverName);<a name="line.124"></a>
-<span class="sourceLineNo">125</span> public long getWriteFailureCount();<a name="line.125"></a>
-<span class="sourceLineNo">126</span> public long incWriteFailureCount();<a name="line.126"></a>
-<span class="sourceLineNo">127</span> public Map<String,String> getWriteFailures();<a name="line.127"></a>
-<span class="sourceLineNo">128</span> public void updateWriteFailures(String regionName, String serverName);<a name="line.128"></a>
-<span class="sourceLineNo">129</span> }<a name="line.129"></a>
-<span class="sourceLineNo">130</span><a name="line.130"></a>
-<span class="sourceLineNo">131</span> // Simple implementation of canary sink that allows to plot on<a name="line.131"></a>
-<span class="sourceLineNo">132</span> // file or standard output timings or failures.<a name="line.132"></a>
-<span class="sourceLineNo">133</span> public static class StdOutSink implements Sink {<a name="line.133"></a>
-<span class="sourceLineNo">134</span> private AtomicLong readFailureCount = new AtomicLong(0),<a name="line.134"></a>
-<span class="sourceLineNo">135</span> writeFailureCount = new AtomicLong(0);<a name="line.135"></a>
-<span class="sourceLineNo">136</span><a name="line.136"></a>
-<span class="sourceLineNo">137</span> private Map<String, String> readFailures = new ConcurrentHashMap<>();<a name="line.137"></a>
-<span class="sourceLineNo">138</span> private Map<String, String> writeFailures = new ConcurrentHashMap<>();<a name="line.138"></a>
-<span class="sourceLineNo">139</span><a name="line.139"></a>
-<span class="sourceLineNo">140</span> @Override<a name="line.140"></a>
-<span class="sourceLineNo">141</span> public long getReadFailureCount() {<a name="line.141"></a>
-<span class="sourceLineNo">142</span> return readFailureCount.get();<a name="line.142"></a>
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-<span class="sourceLineNo">147</span> return readFailureCount.incrementAndGet();<a name="line.147"></a>
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-<span class="sourceLineNo">150</span> @Override<a name="line.150"></a>
-<span class="sourceLineNo">151</span> public Map<String, String> getReadFailures() {<a name="line.151"></a>
-<span class="sourceLineNo">152</span> return readFailures;<a name="line.152"></a>
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-<span class="sourceLineNo">155</span> @Override<a name="line.155"></a>
-<span class="sourceLineNo">156</span> public void updateReadFailures(String regionName, String serverName) {<a name="line.156"></a>
-<span class="sourceLineNo">157</span> readFailures.put(regionName, serverName);<a name="line.157"></a>
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-<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 long getWriteFailureCount() {<a name="line.161"></a>
-<span class="sourceLineNo">162</span> return writeFailureCount.get();<a name="line.162"></a>
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-<span class="sourceLineNo">164</span><a name="line.164"></a>
-<span class="sourceLineNo">165</span> @Override<a name="line.165"></a>
-<span class="sourceLineNo">166</span> public long incWriteFailureCount() {<a name="line.166"></a>
-<span class="sourceLineNo">167</span> return writeFailureCount.incrementAndGet();<a name="line.167"></a>
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-<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 Map<String, String> getWriteFailures() {<a name="line.171"></a>
-<span class="sourceLineNo">172</span> return writeFailures;<a name="line.172"></a>
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-<span class="sourceLineNo">175</span> @Override<a name="line.175"></a>
-<span class="sourceLineNo">176</span> public void updateWriteFailures(String regionName, String serverName) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> writeFailures.put(regionName, serverName);<a name="line.177"></a>
-<span class="sourceLineNo">178</span> }<a name="line.178"></a>
-<span class="sourceLineNo">179</span> }<a name="line.179"></a>
-<span class="sourceLineNo">180</span><a name="line.180"></a>
-<span class="sourceLineNo">181</span> public static class RegionServerStdOutSink extends StdOutSink {<a name="line.181"></a>
-<span class="sourceLineNo">182</span><a name="line.182"></a>
-<span class="sourceLineNo">183</span> public void publishReadFailure(String table, String server) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> incReadFailureCount();<a name="line.184"></a>
-<span class="sourceLineNo">185</span> LOG.error(String.format("Read from table:%s on region server:%s", table, server));<a name="line.185"></a>
-<span class="sourceLineNo">186</span> }<a name="line.186"></a>
+<span class="sourceLineNo">107</span> * There are three modes:<a name="line.107"></a>
+<span class="sourceLineNo">108</span> * <ol><a name="line.108"></a>
+<span class="sourceLineNo">109</span> * <li>region mode (Default): For each region, try to get one row per column family outputting<a name="line.109"></a>
+<span class="sourceLineNo">110</span> * information on failure (ERROR) or else the latency.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> * </li><a name="line.111"></a>
+<span class="sourceLineNo">112</span> *<a name="line.112"></a>
+<span class="sourceLineNo">113</span> * <li>regionserver mode: For each regionserver try to get one row from one table selected<a name="line.113"></a>
+<span class="sourceLineNo">114</span> * randomly outputting information on failure (ERROR) or else the latency.<a name="line.114"></a>
+<span class="sourceLineNo">115</span> * </li><a name="line.115"></a>
+<span class="sourceLineNo">116</span> *<a name="line.116"></a>
+<span class="sourceLineNo">117</span> * <li>zookeeper mode: for each zookeeper instance, selects a znode outputting information on<a name="line.117"></a>
+<span class="sourceLineNo">118</span> * failure (ERROR) or else the latency.<a name="line.118"></a>
+<span class="sourceLineNo">119</span> * </li><a name="line.119"></a>
+<span class="sourceLineNo">120</span> * </ol><a name="line.120"></a>
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+<span class="sourceLineNo">122</span>@InterfaceAudience.Private<a name="line.122"></a>
+<span class="sourceLineNo">123</span>public final class Canary implements Tool {<a name="line.123"></a>
+<span class="sourceLineNo">124</span> /**<a name="line.124"></a>
+<span class="sourceLineNo">125</span> * Sink interface used by the canary to output information<a name="line.125"></a>
+<span class="sourceLineNo">126</span> */<a name="line.126"></a>
+<span class="sourceLineNo">127</span> public interface Sink {<a name="line.127"></a>
+<span class="sourceLineNo">128</span> long getReadFailureCount();<a name="line.128"></a>
+<span class="sourceLineNo">129</span> long incReadFailureCount();<a name="line.129"></a>
+<span class="sourceLineNo">130</span> Map<String,String> getReadFailures();<a name="line.130"></a>
+<span class="sourceLineNo">131</span> void updateReadFailures(String regionName, String serverName);<a name="line.131"></a>
+<span class="sourceLineNo">132</span> long getWriteFailureCount();<a name="line.132"></a>
+<span class="sourceLineNo">133</span> long incWriteFailureCount();<a name="line.133"></a>
+<span class="sourceLineNo">134</span> Map<String,String> getWriteFailures();<a name="line.134"></a>
+<span class="sourceLineNo">135</span> void updateWriteFailures(String regionName, String serverName);<a name="line.135"></a>
+<span class="sourceLineNo">136</span> }<a name="line.136"></a>
+<span class="sourceLineNo">137</span><a name="line.137"></a>
+<span class="sourceLineNo">138</span> /**<a name="line.138"></a>
+<span class="sourceLineNo">139</span> * Simple implementation of canary sink that allows plotting to a file or standard output.<a name="line.139"></a>
+<span class="sourceLineNo">140</span> */<a name="line.140"></a>
+<span class="sourceLineNo">141</span> public static class StdOutSink implements Sink {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> private AtomicLong readFailureCount = new AtomicLong(0),<a name="line.142"></a>
+<span class="sourceLineNo">143</span> writeFailureCount = new AtomicLong(0);<a name="line.143"></a>
+<span class="sourceLineNo">144</span> private Map<String, String> readFailures = new ConcurrentHashMap<>();<a name="line.144"></a>
+<span class="sourceLineNo">145</span> private Map<String, String> writeFailures = new ConcurrentHashMap<>();<a name="line.145"></a>
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+<span class="sourceLineNo">149</span> return readFailureCount.get();<a name="line.149"></a>
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-<span class="sourceLineNo">198</span> LOG.error(String.format("Read from zNode:%s on zookeeper instance:%s", zNode, server));<a name="line.198"></a>
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+<span class="sourceLineNo">193</span> incReadFailureCount();<a name="line.193"></a>
+<span class="sourceLineNo">194</span> LOG.error("Read from {} on {}", table, server);<a name="line.194"></a>
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-<span class="sourceLineNo">214</span> LOG.error(String.format("read from region %s on regionserver %s failed", region.getRegionNameAsString(), serverName), e);<a name="line.214"></a>
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-<span class="sourceLineNo">219</span> LOG.error(String.format("read from region %s on regionserver %s column family %s failed",<a name="line.219"></a>
-<span class="sourceLineNo">220</span> region.getRegionNameAsString(), serverName, column.getNameAsString()), e);<a name="line.220"></a>
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