http://git-wip-us.apache.org/repos/asf/hbase-site/blob/044b3379/apidocs/src-html/org/apache/hadoop/hbase/client/HTableMultiplexer.HTableMultiplexerStatus.html
----------------------------------------------------------------------
diff --git 
a/apidocs/src-html/org/apache/hadoop/hbase/client/HTableMultiplexer.HTableMultiplexerStatus.html
 
b/apidocs/src-html/org/apache/hadoop/hbase/client/HTableMultiplexer.HTableMultiplexerStatus.html
index d607296..e22025b 100644
--- 
a/apidocs/src-html/org/apache/hadoop/hbase/client/HTableMultiplexer.HTableMultiplexerStatus.html
+++ 
b/apidocs/src-html/org/apache/hadoop/hbase/client/HTableMultiplexer.HTableMultiplexerStatus.html
@@ -57,616 +57,615 @@
 <span class="sourceLineNo">049</span>import 
org.apache.hadoop.hbase.TableName;<a name="line.49"></a>
 <span class="sourceLineNo">050</span>import 
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.50"></a>
 <span class="sourceLineNo">051</span>import 
org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import 
org.apache.hadoop.hbase.client.AsyncProcess.AsyncRequestFuture;<a 
name="line.52"></a>
-<span class="sourceLineNo">053</span>import 
org.apache.hadoop.hbase.ipc.RpcControllerFactory;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import 
org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.54"></a>
-<span class="sourceLineNo">055</span><a name="line.55"></a>
-<span class="sourceLineNo">056</span>/**<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * HTableMultiplexer provides a 
thread-safe non blocking PUT API across all the tables.<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * Each put will be sharded into 
different buffer queues based on its destination region server.<a 
name="line.58"></a>
-<span class="sourceLineNo">059</span> * So each region server buffer queue 
will only have the puts which share the same destination.<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * And each queue will have a flush 
worker thread to flush the puts request to the region server.<a 
name="line.60"></a>
-<span class="sourceLineNo">061</span> * If any queue is full, the 
HTableMultiplexer starts to drop the Put requests for that<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * particular queue.<a name="line.62"></a>
-<span class="sourceLineNo">063</span> *<a name="line.63"></a>
-<span class="sourceLineNo">064</span> * Also all the puts will be retried as a 
configuration number before dropping.<a name="line.64"></a>
-<span class="sourceLineNo">065</span> * And the HTableMultiplexer can report 
the number of buffered requests and the number of the<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * failed (dropped) requests in total or 
on per region server basis.<a name="line.66"></a>
-<span class="sourceLineNo">067</span> *<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * This class is thread safe.<a 
name="line.68"></a>
-<span class="sourceLineNo">069</span> */<a name="line.69"></a>
-<span class="sourceLineNo">070</span>@InterfaceAudience.Public<a 
name="line.70"></a>
-<span class="sourceLineNo">071</span>@InterfaceStability.Evolving<a 
name="line.71"></a>
-<span class="sourceLineNo">072</span>public class HTableMultiplexer {<a 
name="line.72"></a>
-<span class="sourceLineNo">073</span>  private static final Log LOG = 
LogFactory.getLog(HTableMultiplexer.class.getName());<a name="line.73"></a>
-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span>  public static final String 
TABLE_MULTIPLEXER_FLUSH_PERIOD_MS =<a name="line.75"></a>
-<span class="sourceLineNo">076</span>      
"hbase.tablemultiplexer.flush.period.ms";<a name="line.76"></a>
-<span class="sourceLineNo">077</span>  public static final String 
TABLE_MULTIPLEXER_INIT_THREADS = "hbase.tablemultiplexer.init.threads";<a 
name="line.77"></a>
-<span class="sourceLineNo">078</span>  public static final String 
TABLE_MULTIPLEXER_MAX_RETRIES_IN_QUEUE =<a name="line.78"></a>
-<span class="sourceLineNo">079</span>      
"hbase.client.max.retries.in.queue";<a name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span>  /** The map between each region server 
to its flush worker */<a name="line.81"></a>
-<span class="sourceLineNo">082</span>  private final Map&lt;HRegionLocation, 
FlushWorker&gt; serverToFlushWorkerMap =<a name="line.82"></a>
-<span class="sourceLineNo">083</span>      new ConcurrentHashMap&lt;&gt;();<a 
name="line.83"></a>
-<span class="sourceLineNo">084</span><a name="line.84"></a>
-<span class="sourceLineNo">085</span>  private final Configuration 
workerConf;<a name="line.85"></a>
-<span class="sourceLineNo">086</span>  private final ClusterConnection conn;<a 
name="line.86"></a>
-<span class="sourceLineNo">087</span>  private final ExecutorService pool;<a 
name="line.87"></a>
-<span class="sourceLineNo">088</span>  private final int maxAttempts;<a 
name="line.88"></a>
-<span class="sourceLineNo">089</span>  private final int 
perRegionServerBufferQueueSize;<a name="line.89"></a>
-<span class="sourceLineNo">090</span>  private final int maxKeyValueSize;<a 
name="line.90"></a>
-<span class="sourceLineNo">091</span>  private final ScheduledExecutorService 
executor;<a name="line.91"></a>
-<span class="sourceLineNo">092</span>  private final long flushPeriod;<a 
name="line.92"></a>
-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span>  /**<a name="line.94"></a>
-<span class="sourceLineNo">095</span>   * @param conf The HBaseConfiguration<a 
name="line.95"></a>
-<span class="sourceLineNo">096</span>   * @param 
perRegionServerBufferQueueSize determines the max number of the buffered Put 
ops for<a name="line.96"></a>
-<span class="sourceLineNo">097</span>   *          each region server before 
dropping the request.<a name="line.97"></a>
-<span class="sourceLineNo">098</span>   */<a name="line.98"></a>
-<span class="sourceLineNo">099</span>  public HTableMultiplexer(Configuration 
conf, int perRegionServerBufferQueueSize)<a name="line.99"></a>
-<span class="sourceLineNo">100</span>      throws IOException {<a 
name="line.100"></a>
-<span class="sourceLineNo">101</span>    
this(ConnectionFactory.createConnection(conf), conf, 
perRegionServerBufferQueueSize);<a name="line.101"></a>
-<span class="sourceLineNo">102</span>  }<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span>  /**<a name="line.104"></a>
-<span class="sourceLineNo">105</span>   * @param conn The HBase connection.<a 
name="line.105"></a>
-<span class="sourceLineNo">106</span>   * @param conf The HBase 
configuration<a name="line.106"></a>
-<span class="sourceLineNo">107</span>   * @param 
perRegionServerBufferQueueSize determines the max number of the buffered Put 
ops for<a name="line.107"></a>
-<span class="sourceLineNo">108</span>   *          each region server before 
dropping the request.<a name="line.108"></a>
-<span class="sourceLineNo">109</span>   */<a name="line.109"></a>
-<span class="sourceLineNo">110</span>  public HTableMultiplexer(Connection 
conn, Configuration conf,<a name="line.110"></a>
-<span class="sourceLineNo">111</span>      int perRegionServerBufferQueueSize) 
{<a name="line.111"></a>
-<span class="sourceLineNo">112</span>    this.conn = (ClusterConnection) 
conn;<a name="line.112"></a>
-<span class="sourceLineNo">113</span>    this.pool = 
HTable.getDefaultExecutor(conf);<a name="line.113"></a>
-<span class="sourceLineNo">114</span>    // how many times we could try in 
total, one more than retry number<a name="line.114"></a>
-<span class="sourceLineNo">115</span>    this.maxAttempts = 
conf.getInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER,<a name="line.115"></a>
-<span class="sourceLineNo">116</span>        
HConstants.DEFAULT_HBASE_CLIENT_RETRIES_NUMBER) + 1;<a name="line.116"></a>
-<span class="sourceLineNo">117</span>    this.perRegionServerBufferQueueSize = 
perRegionServerBufferQueueSize;<a name="line.117"></a>
-<span class="sourceLineNo">118</span>    this.maxKeyValueSize = 
HTable.getMaxKeyValueSize(conf);<a name="line.118"></a>
-<span class="sourceLineNo">119</span>    this.flushPeriod = 
conf.getLong(TABLE_MULTIPLEXER_FLUSH_PERIOD_MS, 100);<a name="line.119"></a>
-<span class="sourceLineNo">120</span>    int initThreads = 
conf.getInt(TABLE_MULTIPLEXER_INIT_THREADS, 10);<a name="line.120"></a>
-<span class="sourceLineNo">121</span>    this.executor =<a name="line.121"></a>
-<span class="sourceLineNo">122</span>        
Executors.newScheduledThreadPool(initThreads,<a name="line.122"></a>
-<span class="sourceLineNo">123</span>          new 
ThreadFactoryBuilder().setDaemon(true).setNameFormat("HTableFlushWorker-%d").build());<a
 name="line.123"></a>
-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span>    this.workerConf = 
HBaseConfiguration.create(conf);<a name="line.125"></a>
-<span class="sourceLineNo">126</span>    // We do not do the retry because we 
need to reassign puts to different queues if regions are<a name="line.126"></a>
-<span class="sourceLineNo">127</span>    // moved.<a name="line.127"></a>
-<span class="sourceLineNo">128</span>    
this.workerConf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 0);<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>  /**<a name="line.131"></a>
-<span class="sourceLineNo">132</span>   * Closes the internal {@link 
Connection}. Does nothing if the {@link Connection} has already<a 
name="line.132"></a>
-<span class="sourceLineNo">133</span>   * been closed.<a name="line.133"></a>
-<span class="sourceLineNo">134</span>   * @throws IOException If there is an 
error closing the connection.<a name="line.134"></a>
-<span class="sourceLineNo">135</span>   */<a name="line.135"></a>
-<span class="sourceLineNo">136</span>  @SuppressWarnings("deprecation")<a 
name="line.136"></a>
-<span class="sourceLineNo">137</span>  public synchronized void close() throws 
IOException {<a name="line.137"></a>
-<span class="sourceLineNo">138</span>    if (!getConnection().isClosed()) {<a 
name="line.138"></a>
-<span class="sourceLineNo">139</span>      getConnection().close();<a 
name="line.139"></a>
-<span class="sourceLineNo">140</span>    }<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>  /**<a name="line.143"></a>
-<span class="sourceLineNo">144</span>   * The put request will be buffered by 
its corresponding buffer queue. Return false if the queue<a name="line.144"></a>
-<span class="sourceLineNo">145</span>   * is already full.<a 
name="line.145"></a>
-<span class="sourceLineNo">146</span>   * @param tableName<a 
name="line.146"></a>
-<span class="sourceLineNo">147</span>   * @param put<a name="line.147"></a>
-<span class="sourceLineNo">148</span>   * @return true if the request can be 
accepted by its corresponding buffer queue.<a name="line.148"></a>
-<span class="sourceLineNo">149</span>   */<a name="line.149"></a>
-<span class="sourceLineNo">150</span>  public boolean put(TableName tableName, 
final Put put) {<a name="line.150"></a>
-<span class="sourceLineNo">151</span>    return put(tableName, put, 
this.maxAttempts);<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>  /**<a name="line.154"></a>
-<span class="sourceLineNo">155</span>   * The puts request will be buffered by 
their corresponding buffer queue.<a name="line.155"></a>
-<span class="sourceLineNo">156</span>   * Return the list of puts which could 
not be queued.<a name="line.156"></a>
-<span class="sourceLineNo">157</span>   * @param tableName<a 
name="line.157"></a>
-<span class="sourceLineNo">158</span>   * @param puts<a name="line.158"></a>
-<span class="sourceLineNo">159</span>   * @return the list of puts which could 
not be queued<a name="line.159"></a>
-<span class="sourceLineNo">160</span>   */<a name="line.160"></a>
-<span class="sourceLineNo">161</span>  public List&lt;Put&gt; put(TableName 
tableName, final List&lt;Put&gt; puts) {<a name="line.161"></a>
-<span class="sourceLineNo">162</span>    if (puts == null)<a 
name="line.162"></a>
-<span class="sourceLineNo">163</span>      return null;<a name="line.163"></a>
-<span class="sourceLineNo">164</span><a name="line.164"></a>
-<span class="sourceLineNo">165</span>    List &lt;Put&gt; failedPuts = null;<a 
name="line.165"></a>
-<span class="sourceLineNo">166</span>    boolean result;<a name="line.166"></a>
-<span class="sourceLineNo">167</span>    for (Put put : puts) {<a 
name="line.167"></a>
-<span class="sourceLineNo">168</span>      result = put(tableName, put, 
this.maxAttempts);<a name="line.168"></a>
-<span class="sourceLineNo">169</span>      if (result == false) {<a 
name="line.169"></a>
-<span class="sourceLineNo">170</span><a name="line.170"></a>
-<span class="sourceLineNo">171</span>        // Create the failed puts list if 
necessary<a name="line.171"></a>
-<span class="sourceLineNo">172</span>        if (failedPuts == null) {<a 
name="line.172"></a>
-<span class="sourceLineNo">173</span>          failedPuts = new 
ArrayList&lt;Put&gt;();<a name="line.173"></a>
-<span class="sourceLineNo">174</span>        }<a name="line.174"></a>
-<span class="sourceLineNo">175</span>        // Add the put to the failed puts 
list<a name="line.175"></a>
-<span class="sourceLineNo">176</span>        failedPuts.add(put);<a 
name="line.176"></a>
-<span class="sourceLineNo">177</span>      }<a name="line.177"></a>
-<span class="sourceLineNo">178</span>    }<a name="line.178"></a>
-<span class="sourceLineNo">179</span>    return failedPuts;<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>  /**<a name="line.182"></a>
-<span class="sourceLineNo">183</span>   * @deprecated Use {@link 
#put(TableName, List) } instead.<a name="line.183"></a>
-<span class="sourceLineNo">184</span>   */<a name="line.184"></a>
-<span class="sourceLineNo">185</span>  @Deprecated<a name="line.185"></a>
-<span class="sourceLineNo">186</span>  public List&lt;Put&gt; put(byte[] 
tableName, final List&lt;Put&gt; puts) {<a name="line.186"></a>
-<span class="sourceLineNo">187</span>    return 
put(TableName.valueOf(tableName), puts);<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>  /**<a name="line.190"></a>
-<span class="sourceLineNo">191</span>   * The put request will be buffered by 
its corresponding buffer queue. And the put request will be<a 
name="line.191"></a>
-<span class="sourceLineNo">192</span>   * retried before dropping the 
request.<a name="line.192"></a>
-<span class="sourceLineNo">193</span>   * Return false if the queue is already 
full.<a name="line.193"></a>
-<span class="sourceLineNo">194</span>   * @return true if the request can be 
accepted by its corresponding buffer queue.<a name="line.194"></a>
-<span class="sourceLineNo">195</span>   */<a name="line.195"></a>
-<span class="sourceLineNo">196</span>  public boolean put(final TableName 
tableName, final Put put, int maxAttempts) {<a name="line.196"></a>
-<span class="sourceLineNo">197</span>    if (maxAttempts &lt;= 0) {<a 
name="line.197"></a>
-<span class="sourceLineNo">198</span>      return false;<a name="line.198"></a>
-<span class="sourceLineNo">199</span>    }<a name="line.199"></a>
-<span class="sourceLineNo">200</span><a name="line.200"></a>
-<span class="sourceLineNo">201</span>    try {<a name="line.201"></a>
-<span class="sourceLineNo">202</span>      HTable.validatePut(put, 
maxKeyValueSize);<a name="line.202"></a>
-<span class="sourceLineNo">203</span>      // Allow mocking to get at the 
connection, but don't expose the connection to users.<a name="line.203"></a>
-<span class="sourceLineNo">204</span>      ClusterConnection conn = 
(ClusterConnection) getConnection();<a name="line.204"></a>
-<span class="sourceLineNo">205</span>      // AsyncProcess in the FlushWorker 
should take care of refreshing the location cache<a name="line.205"></a>
-<span class="sourceLineNo">206</span>      // as necessary. We shouldn't have 
to do that here.<a name="line.206"></a>
-<span class="sourceLineNo">207</span>      HRegionLocation loc = 
conn.getRegionLocation(tableName, put.getRow(), false);<a name="line.207"></a>
-<span class="sourceLineNo">208</span>      if (loc != null) {<a 
name="line.208"></a>
-<span class="sourceLineNo">209</span>        // Add the put pair into its 
corresponding queue.<a name="line.209"></a>
-<span class="sourceLineNo">210</span>        
LinkedBlockingQueue&lt;PutStatus&gt; queue = getQueue(loc);<a 
name="line.210"></a>
-<span class="sourceLineNo">211</span><a name="line.211"></a>
-<span class="sourceLineNo">212</span>        // Generate a MultiPutStatus 
object and offer it into the queue<a name="line.212"></a>
-<span class="sourceLineNo">213</span>        PutStatus s = new 
PutStatus(loc.getRegionInfo(), put, maxAttempts);<a name="line.213"></a>
-<span class="sourceLineNo">214</span><a name="line.214"></a>
-<span class="sourceLineNo">215</span>        return queue.offer(s);<a 
name="line.215"></a>
-<span class="sourceLineNo">216</span>      }<a name="line.216"></a>
-<span class="sourceLineNo">217</span>    } catch (IOException e) {<a 
name="line.217"></a>
-<span class="sourceLineNo">218</span>      LOG.debug("Cannot process the put " 
+ put, e);<a name="line.218"></a>
-<span class="sourceLineNo">219</span>    }<a name="line.219"></a>
-<span class="sourceLineNo">220</span>    return false;<a name="line.220"></a>
-<span class="sourceLineNo">221</span>  }<a name="line.221"></a>
-<span class="sourceLineNo">222</span><a name="line.222"></a>
-<span class="sourceLineNo">223</span>  /**<a name="line.223"></a>
-<span class="sourceLineNo">224</span>   * @deprecated Use {@link 
#put(TableName, Put) } instead.<a name="line.224"></a>
-<span class="sourceLineNo">225</span>   */<a name="line.225"></a>
-<span class="sourceLineNo">226</span>  @Deprecated<a name="line.226"></a>
-<span class="sourceLineNo">227</span>  public boolean put(final byte[] 
tableName, final Put put, int retry) {<a name="line.227"></a>
-<span class="sourceLineNo">228</span>    return 
put(TableName.valueOf(tableName), put, retry);<a name="line.228"></a>
-<span class="sourceLineNo">229</span>  }<a name="line.229"></a>
-<span class="sourceLineNo">230</span><a name="line.230"></a>
-<span class="sourceLineNo">231</span>  /**<a name="line.231"></a>
-<span class="sourceLineNo">232</span>   * @deprecated Use {@link 
#put(TableName, Put)} instead.<a name="line.232"></a>
-<span class="sourceLineNo">233</span>   */<a name="line.233"></a>
-<span class="sourceLineNo">234</span>  @Deprecated<a name="line.234"></a>
-<span class="sourceLineNo">235</span>  public boolean put(final byte[] 
tableName, Put put) {<a name="line.235"></a>
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put(TableName.valueOf(tableName), put);<a name="line.236"></a>
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-<span class="sourceLineNo">238</span><a name="line.238"></a>
-<span class="sourceLineNo">239</span>  /**<a name="line.239"></a>
-<span class="sourceLineNo">240</span>   * @return the current 
HTableMultiplexerStatus<a name="line.240"></a>
-<span class="sourceLineNo">241</span>   */<a name="line.241"></a>
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getHTableMultiplexerStatus() {<a name="line.242"></a>
-<span class="sourceLineNo">243</span>    return new 
HTableMultiplexerStatus(serverToFlushWorkerMap);<a name="line.243"></a>
-<span class="sourceLineNo">244</span>  }<a name="line.244"></a>
-<span class="sourceLineNo">245</span><a name="line.245"></a>
-<span class="sourceLineNo">246</span>  @VisibleForTesting<a 
name="line.246"></a>
-<span class="sourceLineNo">247</span>  LinkedBlockingQueue&lt;PutStatus&gt; 
getQueue(HRegionLocation addr) {<a name="line.247"></a>
-<span class="sourceLineNo">248</span>    FlushWorker worker = 
serverToFlushWorkerMap.get(addr);<a name="line.248"></a>
-<span class="sourceLineNo">249</span>    if (worker == null) {<a 
name="line.249"></a>
-<span class="sourceLineNo">250</span>      synchronized 
(this.serverToFlushWorkerMap) {<a name="line.250"></a>
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serverToFlushWorkerMap.get(addr);<a name="line.251"></a>
-<span class="sourceLineNo">252</span>        if (worker == null) {<a 
name="line.252"></a>
-<span class="sourceLineNo">253</span>          // Create the flush worker<a 
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FlushWorker(workerConf, this.conn, addr, this,<a name="line.254"></a>
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perRegionServerBufferQueueSize, pool, executor);<a name="line.255"></a>
-<span class="sourceLineNo">256</span>          
this.serverToFlushWorkerMap.put(addr, worker);<a name="line.256"></a>
-<span class="sourceLineNo">257</span>          
executor.scheduleAtFixedRate(worker, flushPeriod, flushPeriod, 
TimeUnit.MILLISECONDS);<a name="line.257"></a>
-<span class="sourceLineNo">258</span>        }<a name="line.258"></a>
-<span class="sourceLineNo">259</span>      }<a name="line.259"></a>
-<span class="sourceLineNo">260</span>    }<a name="line.260"></a>
-<span class="sourceLineNo">261</span>    return worker.getQueue();<a 
name="line.261"></a>
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-<span class="sourceLineNo">264</span>  @VisibleForTesting<a 
name="line.264"></a>
-<span class="sourceLineNo">265</span>  ClusterConnection getConnection() {<a 
name="line.265"></a>
-<span class="sourceLineNo">266</span>    return this.conn;<a 
name="line.266"></a>
-<span class="sourceLineNo">267</span>  }<a name="line.267"></a>
-<span class="sourceLineNo">268</span><a name="line.268"></a>
-<span class="sourceLineNo">269</span>  /**<a name="line.269"></a>
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of the current status of the HTableMultiplexer.<a name="line.270"></a>
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TABLE_MULTIPLEXER_FLUSH_PERIOD_MS =<a name="line.74"></a>
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"hbase.tablemultiplexer.flush.period.ms";<a name="line.75"></a>
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TABLE_MULTIPLEXER_INIT_THREADS = "hbase.tablemultiplexer.init.threads";<a 
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TABLE_MULTIPLEXER_MAX_RETRIES_IN_QUEUE =<a name="line.77"></a>
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"hbase.client.max.retries.in.queue";<a name="line.78"></a>
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perRegionServerBufferQueueSize determines the max number of the buffered Put 
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this(ConnectionFactory.createConnection(conf), conf, 
perRegionServerBufferQueueSize);<a name="line.100"></a>
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configuration<a name="line.105"></a>
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perRegionServerBufferQueueSize determines the max number of the buffered Put 
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dropping the request.<a name="line.107"></a>
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total, one more than retry number<a name="line.113"></a>
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conf.getInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER,<a name="line.114"></a>
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HConstants.DEFAULT_HBASE_CLIENT_RETRIES_NUMBER) + 1;<a name="line.115"></a>
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perRegionServerBufferQueueSize;<a name="line.116"></a>
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conf.getInt(TABLE_MULTIPLEXER_INIT_THREADS, 10);<a name="line.119"></a>
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Executors.newScheduledThreadPool(initThreads,<a name="line.121"></a>
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this.workerConf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 0);<a 
name="line.127"></a>
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+<span class="sourceLineNo">129</span><a name="line.129"></a>
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+<span class="sourceLineNo">132</span>   * been closed.<a name="line.132"></a>
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error closing the connection.<a name="line.133"></a>
+<span class="sourceLineNo">134</span>   */<a name="line.134"></a>
+<span class="sourceLineNo">135</span>  @SuppressWarnings("deprecation")<a 
name="line.135"></a>
+<span class="sourceLineNo">136</span>  public synchronized void close() throws 
IOException {<a name="line.136"></a>
+<span class="sourceLineNo">137</span>    if (!getConnection().isClosed()) {<a 
name="line.137"></a>
+<span class="sourceLineNo">138</span>      getConnection().close();<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><a name="line.141"></a>
+<span class="sourceLineNo">142</span>  /**<a name="line.142"></a>
+<span class="sourceLineNo">143</span>   * The put request will be buffered by 
its corresponding buffer queue. Return false if the queue<a name="line.143"></a>
+<span class="sourceLineNo">144</span>   * is already full.<a 
name="line.144"></a>
+<span class="sourceLineNo">145</span>   * @param tableName<a 
name="line.145"></a>
+<span class="sourceLineNo">146</span>   * @param put<a name="line.146"></a>
+<span class="sourceLineNo">147</span>   * @return true if the request can be 
accepted by its corresponding buffer queue.<a name="line.147"></a>
+<span class="sourceLineNo">148</span>   */<a name="line.148"></a>
+<span class="sourceLineNo">149</span>  public boolean put(TableName tableName, 
final Put put) {<a name="line.149"></a>
+<span class="sourceLineNo">150</span>    return put(tableName, put, 
this.maxAttempts);<a name="line.150"></a>
+<span class="sourceLineNo">151</span>  }<a name="line.151"></a>
+<span class="sourceLineNo">152</span><a name="line.152"></a>
+<span class="sourceLineNo">153</span>  /**<a name="line.153"></a>
+<span class="sourceLineNo">154</span>   * The puts request will be buffered by 
their corresponding buffer queue.<a name="line.154"></a>
+<span class="sourceLineNo">155</span>   * Return the list of puts which could 
not be queued.<a name="line.155"></a>
+<span class="sourceLineNo">156</span>   * @param tableName<a 
name="line.156"></a>
+<span class="sourceLineNo">157</span>   * @param puts<a name="line.157"></a>
+<span class="sourceLineNo">158</span>   * @return the list of puts which could 
not be queued<a name="line.158"></a>
+<span class="sourceLineNo">159</span>   */<a name="line.159"></a>
+<span class="sourceLineNo">160</span>  public List&lt;Put&gt; put(TableName 
tableName, final List&lt;Put&gt; puts) {<a name="line.160"></a>
+<span class="sourceLineNo">161</span>    if (puts == null)<a 
name="line.161"></a>
+<span class="sourceLineNo">162</span>      return null;<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span>    List &lt;Put&gt; failedPuts = null;<a 
name="line.164"></a>
+<span class="sourceLineNo">165</span>    boolean result;<a name="line.165"></a>
+<span class="sourceLineNo">166</span>    for (Put put : puts) {<a 
name="line.166"></a>
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this.maxAttempts);<a name="line.167"></a>
+<span class="sourceLineNo">168</span>      if (result == false) {<a 
name="line.168"></a>
+<span class="sourceLineNo">169</span><a name="line.169"></a>
+<span class="sourceLineNo">170</span>        // Create the failed puts list if 
necessary<a name="line.170"></a>
+<span class="sourceLineNo">171</span>        if (failedPuts == null) {<a 
name="line.171"></a>
+<span class="sourceLineNo">172</span>          failedPuts = new 
ArrayList&lt;Put&gt;();<a name="line.172"></a>
+<span class="sourceLineNo">173</span>        }<a name="line.173"></a>
+<span class="sourceLineNo">174</span>        // Add the put to the failed puts 
list<a name="line.174"></a>
+<span class="sourceLineNo">175</span>        failedPuts.add(put);<a 
name="line.175"></a>
+<span class="sourceLineNo">176</span>      }<a name="line.176"></a>
+<span class="sourceLineNo">177</span>    }<a name="line.177"></a>
+<span class="sourceLineNo">178</span>    return failedPuts;<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>  /**<a name="line.181"></a>
+<span class="sourceLineNo">182</span>   * @deprecated Use {@link 
#put(TableName, List) } instead.<a name="line.182"></a>
+<span class="sourceLineNo">183</span>   */<a name="line.183"></a>
+<span class="sourceLineNo">184</span>  @Deprecated<a name="line.184"></a>
+<span class="sourceLineNo">185</span>  public List&lt;Put&gt; put(byte[] 
tableName, final List&lt;Put&gt; puts) {<a name="line.185"></a>
+<span class="sourceLineNo">186</span>    return 
put(TableName.valueOf(tableName), puts);<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>   * The put request will be buffered by 
its corresponding buffer queue. And the put request will be<a 
name="line.190"></a>
+<span class="sourceLineNo">191</span>   * retried before dropping the 
request.<a name="line.191"></a>
+<span class="sourceLineNo">192</span>   * Return false if the queue is already 
full.<a name="line.192"></a>
+<span class="sourceLineNo">193</span>   * @return true if the request can be 
accepted by its corresponding buffer queue.<a name="line.193"></a>
+<span class="sourceLineNo">194</span>   */<a name="line.194"></a>
+<span class="sourceLineNo">195</span>  public boolean put(final TableName 
tableName, final Put put, int maxAttempts) {<a name="line.195"></a>
+<span class="sourceLineNo">196</span>    if (maxAttempts &lt;= 0) {<a 
name="line.196"></a>
+<span class="sourceLineNo">197</span>      return false;<a name="line.197"></a>
+<span class="sourceLineNo">198</span>    }<a name="line.198"></a>
+<span class="sourceLineNo">199</span><a name="line.199"></a>
+<span class="sourceLineNo">200</span>    try {<a name="line.200"></a>
+<span class="sourceLineNo">201</span>      HTable.validatePut(put, 
maxKeyValueSize);<a name="line.201"></a>
+<span class="sourceLineNo">202</span>      // Allow mocking to get at the 
connection, but don't expose the connection to users.<a name="line.202"></a>
+<span class="sourceLineNo">203</span>      ClusterConnection conn = 
(ClusterConnection) getConnection();<a name="line.203"></a>
+<span class="sourceLineNo">204</span>      // AsyncProcess in the FlushWorker 
should take care of refreshing the location cache<a name="line.204"></a>
+<span class="sourceLineNo">205</span>      // as necessary. We shouldn't have 
to do that here.<a name="line.205"></a>
+<span class="sourceLineNo">206</span>      HRegionLocation loc = 
conn.getRegionLocation(tableName, put.getRow(), false);<a name="line.206"></a>
+<span class="sourceLineNo">207</span>      if (loc != null) {<a 
name="line.207"></a>
+<span class="sourceLineNo">208</span>        // Add the put pair into its 
corresponding queue.<a name="line.208"></a>
+<span class="sourceLineNo">209</span>        
LinkedBlockingQueue&lt;PutStatus&gt; queue = getQueue(loc);<a 
name="line.209"></a>
+<span class="sourceLineNo">210</span><a name="line.210"></a>
+<span class="sourceLineNo">211</span>        // Generate a MultiPutStatus 
object and offer it into the queue<a name="line.211"></a>
+<span class="sourceLineNo">212</span>        PutStatus s = new 
PutStatus(loc.getRegionInfo(), put, maxAttempts);<a name="line.212"></a>
+<span class="sourceLineNo">213</span><a name="line.213"></a>
+<span class="sourceLineNo">214</span>        return queue.offer(s);<a 
name="line.214"></a>
+<span class="sourceLineNo">215</span>      }<a name="line.215"></a>
+<span class="sourceLineNo">216</span>    } catch (IOException e) {<a 
name="line.216"></a>
+<span class="sourceLineNo">217</span>      LOG.debug("Cannot process the put " 
+ put, e);<a name="line.217"></a>
+<span class="sourceLineNo">218</span>    }<a name="line.218"></a>
+<span class="sourceLineNo">219</span>    return false;<a name="line.219"></a>
+<span class="sourceLineNo">220</span>  }<a name="line.220"></a>
+<span class="sourceLineNo">221</span><a name="line.221"></a>
+<span class="sourceLineNo">222</span>  /**<a name="line.222"></a>
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#put(TableName, Put) } instead.<a name="line.223"></a>
+<span class="sourceLineNo">224</span>   */<a name="line.224"></a>
+<span class="sourceLineNo">225</span>  @Deprecated<a name="line.225"></a>
+<span class="sourceLineNo">226</span>  public boolean put(final byte[] 
tableName, final Put put, int retry) {<a name="line.226"></a>
+<span class="sourceLineNo">227</span>    return 
put(TableName.valueOf(tableName), put, retry);<a name="line.227"></a>
+<span class="sourceLineNo">228</span>  }<a name="line.228"></a>
+<span class="sourceLineNo">229</span><a name="line.229"></a>
+<span class="sourceLineNo">230</span>  /**<a name="line.230"></a>
+<span class="sourceLineNo">231</span>   * @deprecated Use {@link 
#put(TableName, Put)} instead.<a name="line.231"></a>
+<span class="sourceLineNo">232</span>   */<a name="line.232"></a>
+<span class="sourceLineNo">233</span>  @Deprecated<a name="line.233"></a>
+<span class="sourceLineNo">234</span>  public boolean put(final byte[] 
tableName, Put put) {<a name="line.234"></a>
+<span class="sourceLineNo">235</span>    return 
put(TableName.valueOf(tableName), put);<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>  /**<a name="line.238"></a>
+<span class="sourceLineNo">239</span>   * @return the current 
HTableMultiplexerStatus<a name="line.239"></a>
+<span class="sourceLineNo">240</span>   */<a name="line.240"></a>
+<span class="sourceLineNo">241</span>  public HTableMultiplexerStatus 
getHTableMultiplexerStatus() {<a name="line.241"></a>
+<span class="sourceLineNo">242</span>    return new 
HTableMultiplexerStatus(serverToFlushWorkerMap);<a name="line.242"></a>
+<span class="sourceLineNo">243</span>  }<a name="line.243"></a>
+<span class="sourceLineNo">244</span><a name="line.244"></a>
+<span class="sourceLineNo">245</span>  @VisibleForTesting<a 
name="line.245"></a>
+<span class="sourceLineNo">246</span>  LinkedBlockingQueue&lt;PutStatus&gt; 
getQueue(HRegionLocation addr) {<a name="line.246"></a>
+<span class="sourceLineNo">247</span>    FlushWorker worker = 
serverToFlushWorkerMap.get(addr);<a name="line.247"></a>
+<span class="sourceLineNo">248</span>    if (worker == null) {<a 
name="line.248"></a>
+<span class="sourceLineNo">249</span>      synchronized 
(this.serverToFlushWorkerMap) {<a name="line.249"></a>
+<span class="sourceLineNo">250</span>        worker = 
serverToFlushWorkerMap.get(addr);<a name="line.250"></a>
+<span class="sourceLineNo">251</span>        if (worker == null) {<a 
name="line.251"></a>
+<span class="sourceLineNo">252</span>          // Create the flush worker<a 
name="line.252"></a>
+<span class="sourceLineNo">253</span>          worker = new 
FlushWorker(workerConf, this.conn, addr, this,<a name="line.253"></a>
+<span class="sourceLineNo">254</span>              
perRegionServerBufferQueueSize, pool, executor);<a name="line.254"></a>
+<span class="sourceLineNo">255</span>          
this.serverToFlushWorkerMap.put(addr, worker);<a name="line.255"></a>
+<span class="sourceLineNo">256</span>          
executor.scheduleAtFixedRate(worker, flushPeriod, flushPeriod, 
TimeUnit.MILLISECONDS);<a name="line.256"></a>
+<span class="sourceLineNo">257</span>        }<a name="line.257"></a>
+<span class="sourceLineNo">258</span>      }<a name="line.258"></a>
+<span class="sourceLineNo">259</span>    }<a name="line.259"></a>
+<span class="sourceLineNo">260</span>    return worker.getQueue();<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>  @VisibleForTesting<a 
name="line.263"></a>
+<span class="sourceLineNo">264</span>  ClusterConnection getConnection() {<a 
name="line.264"></a>
+<span class="sourceLineNo">265</span>    return this.conn;<a 
name="line.265"></a>
+<span class="sourceLineNo">266</span>  }<a name="line.266"></a>
+<span class="sourceLineNo">267</span><a name="line.267"></a>
+<span class="sourceLineNo">268</span>  /**<a name="line.268"></a>
+<span class="sourceLineNo">269</span>   * HTableMultiplexerStatus keeps track 
of the current status of the HTableMultiplexer.<a name="line.269"></a>
+<span class="sourceLineNo">270</span>   * report the number of buffered 
requests and the number of the failed (dropped) requests<a name="line.270"></a>
+<span class="sourceLineNo">271</span>   * in total or on per region server 
basis.<a name="line.271"></a>
+<span class="sourceLineNo">272</span>   */<a name="line.272"></a>
+<span class="sourceLineNo">273</span>  @InterfaceAudience.Public<a 
name="line.273"></a>
+<span class="sourceLineNo">274</span>  @InterfaceStability.Evolving<a 
name="line.274"></a>
+<span class="sourceLineNo">275</span>  public static class 
HTableMultiplexerStatus {<a name="line.275"></a>
+<span class="sourceLineNo">276</span>    private long totalFailedPutCounter;<a 
name="line.276"></a>
+<span class="sourceLineNo">277</span>    private long 
totalBufferedPutCounter;<a name="line.277"></a>
+<span class="sourceLineNo">278</span>    private long maxLatency;<a 
name="line.278"></a>
+<span class="sourceLineNo">279</span>    private long overallAverageLatency;<a 
name="line.279"></a>
+<span class="sourceLineNo">280</span>    private Map&lt;String, Long&gt; 
serverToFailedCounterMap;<a name="line.280"></a>
+<span class="sourceLineNo">281</span>    private Map&lt;String, Long&gt; 
serverToBufferedCounterMap;<a name="line.281"></a>
+<span class="sourceLineNo">282</span>    private Map&lt;String, Long&gt; 
serverToAverageLatencyMap;<a name="line.282"></a>
+<span class="sourceLineNo">283</span>    private Map&lt;String, Long&gt; 
serverToMaxLatencyMap;<a name="line.283"></a>
+<span class="sourceLineNo">284</span><a name="line.284"></a>
+<span class="sourceLineNo">285</span>    public HTableMultiplexerStatus(<a 
name="line.285"></a>
+<span class="sourceLineNo">286</span>        Map&lt;HRegionLocation, 
FlushWorker&gt; serverToFlushWorkerMap) {<a name="line.286"></a>
+<span class="sourceLineNo">287</span>      this.totalBufferedPutCounter = 0;<a 
name="line.287"></a>
+<span class="sourceLineNo">288</span>      this.totalFailedPutCounter = 0;<a 
name="line.288"></a>
+<span class="sourceLineNo">289</span>      this.maxLatency = 0;<a 
name="line.289"></a>
+<span class="sourceLineNo">290</span>      this.overallAverageLatency = 0;<a 
name="line.290"></a>
+<span class="sourceLineNo">291</span>      this.serverToBufferedCounterMap = 
new HashMap&lt;String, Long&gt;();<a name="line.291"></a>
+<span class="sourceLineNo">292</span>      this.serverToFailedCounterMap = new 
HashMap&lt;String, Long&gt;();<a name="line.292"></a>
+<span class="sourceLineNo">293</span>      this.serverToAverageLatencyMap = 
new HashMap&lt;String, Long&gt;();<a name="line.293"></a>
+<span class="sourceLineNo">294</span>      this.serverToMaxLatencyMap = new 
HashMap&lt;String, Long&gt;();<a name="line.294"></a>
+<span class="sourceLineNo">295</span>      
this.initialize(serverToFlushWorkerMap);<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>    private void initialize(<a 
name="line.298"></a>
+<span class="sourceLineNo">299</span>        Map&lt;HRegionLocation, 
FlushWorker&gt; serverToFlushWorkerMap) {<a name="line.299"></a>
+<span class="sourceLineNo">300</span>      if (serverToFlushWorkerMap == null) 
{<a name="line.300"></a>
+<span class="sourceLineNo">301</span>        return;<a name="line.301"></a>
+<span class="sourceLineNo">302</span>      }<a name="line.302"></a>
+<span class="sourceLineNo">303</span><a name="line.303"></a>
+<span class="sourceLineNo">304</span>      long averageCalcSum = 0;<a 
name="line.304"></a>
+<span class="sourceLineNo">305</span>      int averageCalcCount = 0;<a 
name="line.305"></a>
+<span class="sourceLineNo">306</span>      for (Map.Entry&lt;HRegionLocation, 
FlushWorker&gt; entry : serverToFlushWorkerMap<a name="line.306"></a>
+<span class="sourceLineNo">307</span>          .entrySet()) {<a 
name="line.307"></a>
+<span class="sourceLineNo">308</span>        HRegionLocation addr = 
entry.getKey();<a name="line.308"></a>
+<span class="sourceLineNo">309</span>        FlushWorker worker = 
entry.getValue();<a name="line.309"></a>
+<span class="sourceLineNo">310</span><a name="line.310"></a>
+<span class="sourceLineNo">311</span>        long bufferedCounter = 
worker.getTotalBufferedCount();<a name="line.311"></a>
+<span class="sourceLineNo">312</span>        long failedCounter = 
worker.getTotalFailedCount();<a name="line.312"></a>
+<span class="sourceLineNo">313</span>        long serverMaxLatency = 
worker.getMaxLatency();<a name="line.313"></a>
+<span class="sourceLineNo">314</span>        AtomicAverageCounter 
averageCounter = worker.getAverageLatencyCounter();<a name="line.314"></a>
+<span class="sourceLineNo">315</span>        // Get sum and count pieces 
separately to compute overall average<a name="line.315"></a>
+<span class="sourceLineNo">316</span>        SimpleEntry&lt;Long, Integer&gt; 
averageComponents = averageCounter<a name="line.316"></a>
+<span class="sourceLineNo">317</span>            .getComponents();<a 
name="line.317"></a>
+<span class="sourceLineNo">318</span>        long serverAvgLatency = 
averageCounter.getAndReset();<a name="line.318"></a>
+<span class="sourceLineNo">319</span><a name="line.319"></a>
+<span class="sourceLineNo">320</span>        this.totalBufferedPutCounter += 
bufferedCounter;<a name="line.320"></a>
+<span class="sourceLineNo">321</span>        this.totalFailedPutCounter += 
failedCounter;<a name="line.321"></a>
+<span class="sourceLineNo">322</span>        if (serverMaxLatency &gt; 
this.maxLatency) {<a name="line.322"></a>
+<span class="sourceLineNo">323</span>          this.maxLatency = 
serverMaxLatency;<a name="line.323"></a>
+<span class="sourceLineNo">324</span>        }<a name="line.324"></a>
+<span class="sourceLineNo">325</span>        averageCalcSum += 
averageComponents.getKey();<a name="line.325"></a>
+<span class="sourceLineNo">326</span>        averageCalcCount += 
averageComponents.getValue();<a name="line.326"></a>
+<span class="sourceLineNo">327</span><a name="line.327"></a>
+<span class="sourceLineNo">328</span>        
this.serverToBufferedCounterMap.put(addr.getHostnamePort(),<a 
name="line.328"></a>
+<span class="sourceLineNo">329</span>            bufferedCounter);<a 
name="line.329"></a>
+<span class="sourceLineNo">330</span>        this.serverToFailedCounterMap<a 
name="line.330"></a>
+<span class="sourceLineNo">331</span>            
.put(addr.getHostnamePort(),<a name="line.331"></a>
+<span class="sourceLineNo">332</span>            failedCounter);<a 
name="line.332"></a>
+<span class="sourceLineNo">333</span>        
this.serverToAverageLatencyMap.put(addr.getHostnamePort(),<a 
name="line.333"></a>
+<span class="sourceLineNo">334</span>            serverAvgLatency);<a 
name="line.334"></a>
+<span class="sourceLineNo">335</span>        this.serverToMaxLatencyMap<a 
name="line.335"></a>
+<span class="sourceLineNo">336</span>            
.put(addr.getHostnamePort(),<a name="line.336"></a>
+<span class="sourceLineNo">337</span>            serverMaxLatency);<a 
name="line.337"></a>
+<span class="sourceLineNo">338</span>      }<a name="line.338"></a>
+<span class="sourceLineNo">339</span>      this.overallAverageLatency = 
averageCalcCount != 0 ? averageCalcSum<a name="line.339"></a>
+<span class="sourceLineNo">340</span>          / averageCalcCount : 0;<a 
name="line.340"></a>
+<span class="sourceLineNo">341</span>    }<a name="line.341"></a>
+<span class="sourceLineNo">342</span><a name="line.342"></a>
+<span class="sourceLineNo">343</span>    public long getTotalBufferedCounter() 
{<a name="line.343"></a>
+<span class="sourceLineNo">344</span>      return 
this.totalBufferedPutCounter;<a name="line.344"></a>
+<span class="sourceLineNo">345</span>    }<a name="line.345"></a>
+<

<TRUNCATED>

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