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From git-site-r...@apache.org
Subject [08/30] hbase-site git commit: Published site at 82d554e3783372cc6b05489452c815b57c06f6cd.
Date Mon, 19 Jun 2017 15:00:20 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/7f23ee04/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.html
new file mode 100644
index 0000000..876fec9
--- /dev/null
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.html
@@ -0,0 +1,574 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<span class="sourceLineNo">002</span> *<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * or more contributor license agreements.  See the NOTICE file<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * regarding copyright ownership.  The ASF licenses this file<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * with the License.  You may obtain a copy of the License at<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a>
+<span class="sourceLineNo">012</span> *<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a>
+<span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a>
+<span class="sourceLineNo">018</span> */<a name="line.18"></a>
+<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.replication.regionserver;<a name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.io.EOFException;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.ArrayList;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.HashMap;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.BlockingQueue;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.PriorityBlockingQueue;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.30"></a>
+<span class="sourceLineNo">031</span><a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.logging.LogFactory;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.fs.FileSystem;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.fs.Path;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.Cell;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HConstants;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.BulkLoadDescriptor;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.StoreDescriptor;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.regionserver.RSRpcServices;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.regionserver.wal.WALEdit;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.replication.ReplicationQueueInfo;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.replication.WALEntryFilter;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.replication.regionserver.WALEntryStream.WALEntryStreamRuntimeException;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
+<span class="sourceLineNo">055</span>/**<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * Reads and filters WAL entries, groups the filtered entries into batches, and puts the batches onto a queue<a name="line.56"></a>
+<span class="sourceLineNo">057</span> *<a name="line.57"></a>
+<span class="sourceLineNo">058</span> */<a name="line.58"></a>
+<span class="sourceLineNo">059</span>@InterfaceAudience.Private<a name="line.59"></a>
+<span class="sourceLineNo">060</span>@InterfaceStability.Evolving<a name="line.60"></a>
+<span class="sourceLineNo">061</span>public class ReplicationSourceWALReader extends Thread {<a name="line.61"></a>
+<span class="sourceLineNo">062</span>  private static final Log LOG = LogFactory.getLog(ReplicationSourceWALReader.class);<a name="line.62"></a>
+<span class="sourceLineNo">063</span><a name="line.63"></a>
+<span class="sourceLineNo">064</span>  private final PriorityBlockingQueue&lt;Path&gt; logQueue;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>  private final FileSystem fs;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>  private final Configuration conf;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>  private final WALEntryFilter filter;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>  private final ReplicationSource source;<a name="line.68"></a>
+<span class="sourceLineNo">069</span><a name="line.69"></a>
+<span class="sourceLineNo">070</span>  protected final BlockingQueue&lt;WALEntryBatch&gt; entryBatchQueue;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>  // max (heap) size of each batch - multiply by number of batches in queue to get total<a name="line.71"></a>
+<span class="sourceLineNo">072</span>  private final long replicationBatchSizeCapacity;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>  // max count of each batch - multiply by number of batches in queue to get total<a name="line.73"></a>
+<span class="sourceLineNo">074</span>  protected final int replicationBatchCountCapacity;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>  // position in the WAL to start reading at<a name="line.75"></a>
+<span class="sourceLineNo">076</span>  private long currentPosition;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>  private final long sleepForRetries;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>  private final int maxRetriesMultiplier;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>  private final boolean eofAutoRecovery;<a name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
+<span class="sourceLineNo">081</span>  //Indicates whether this particular worker is running<a name="line.81"></a>
+<span class="sourceLineNo">082</span>  private boolean isReaderRunning = true;<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span>  private AtomicLong totalBufferUsed;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>  private long totalBufferQuota;<a name="line.85"></a>
+<span class="sourceLineNo">086</span><a name="line.86"></a>
+<span class="sourceLineNo">087</span>  /**<a name="line.87"></a>
+<span class="sourceLineNo">088</span>   * Creates a reader worker for a given WAL queue. Reads WAL entries off a given queue, batches the<a name="line.88"></a>
+<span class="sourceLineNo">089</span>   * entries, and puts them on a batch queue.<a name="line.89"></a>
+<span class="sourceLineNo">090</span>   * @param fs the files system to use<a name="line.90"></a>
+<span class="sourceLineNo">091</span>   * @param conf configuration to use<a name="line.91"></a>
+<span class="sourceLineNo">092</span>   * @param logQueue The WAL queue to read off of<a name="line.92"></a>
+<span class="sourceLineNo">093</span>   * @param startPosition position in the first WAL to start reading from<a name="line.93"></a>
+<span class="sourceLineNo">094</span>   * @param filter The filter to use while reading<a name="line.94"></a>
+<span class="sourceLineNo">095</span>   * @param source replication source<a name="line.95"></a>
+<span class="sourceLineNo">096</span>   */<a name="line.96"></a>
+<span class="sourceLineNo">097</span>  public ReplicationSourceWALReader(FileSystem fs, Configuration conf,<a name="line.97"></a>
+<span class="sourceLineNo">098</span>      PriorityBlockingQueue&lt;Path&gt; logQueue, long startPosition, WALEntryFilter filter,<a name="line.98"></a>
+<span class="sourceLineNo">099</span>      ReplicationSource source) {<a name="line.99"></a>
+<span class="sourceLineNo">100</span>    this.logQueue = logQueue;<a name="line.100"></a>
+<span class="sourceLineNo">101</span>    this.currentPosition = startPosition;<a name="line.101"></a>
+<span class="sourceLineNo">102</span>    this.fs = fs;<a name="line.102"></a>
+<span class="sourceLineNo">103</span>    this.conf = conf;<a name="line.103"></a>
+<span class="sourceLineNo">104</span>    this.filter = filter;<a name="line.104"></a>
+<span class="sourceLineNo">105</span>    this.source = source;<a name="line.105"></a>
+<span class="sourceLineNo">106</span>    this.replicationBatchSizeCapacity =<a name="line.106"></a>
+<span class="sourceLineNo">107</span>        this.conf.getLong("replication.source.size.capacity", 1024 * 1024 * 64);<a name="line.107"></a>
+<span class="sourceLineNo">108</span>    this.replicationBatchCountCapacity = this.conf.getInt("replication.source.nb.capacity", 25000);<a name="line.108"></a>
+<span class="sourceLineNo">109</span>    // memory used will be batchSizeCapacity * (nb.batches + 1)<a name="line.109"></a>
+<span class="sourceLineNo">110</span>    // the +1 is for the current thread reading before placing onto the queue<a name="line.110"></a>
+<span class="sourceLineNo">111</span>    int batchCount = conf.getInt("replication.source.nb.batches", 1);<a name="line.111"></a>
+<span class="sourceLineNo">112</span>    this.totalBufferUsed = source.getSourceManager().getTotalBufferUsed();<a name="line.112"></a>
+<span class="sourceLineNo">113</span>    this.totalBufferQuota = conf.getLong(HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_KEY,<a name="line.113"></a>
+<span class="sourceLineNo">114</span>      HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT);<a name="line.114"></a>
+<span class="sourceLineNo">115</span>    this.sleepForRetries =<a name="line.115"></a>
+<span class="sourceLineNo">116</span>        this.conf.getLong("replication.source.sleepforretries", 1000);    // 1 second<a name="line.116"></a>
+<span class="sourceLineNo">117</span>    this.maxRetriesMultiplier =<a name="line.117"></a>
+<span class="sourceLineNo">118</span>        this.conf.getInt("replication.source.maxretriesmultiplier", 300); // 5 minutes @ 1 sec per<a name="line.118"></a>
+<span class="sourceLineNo">119</span>    this.eofAutoRecovery = conf.getBoolean("replication.source.eof.autorecovery", false);<a name="line.119"></a>
+<span class="sourceLineNo">120</span>    this.entryBatchQueue = new LinkedBlockingQueue&lt;&gt;(batchCount);<a name="line.120"></a>
+<span class="sourceLineNo">121</span>    LOG.info("peerClusterZnode=" + source.getPeerClusterZnode()<a name="line.121"></a>
+<span class="sourceLineNo">122</span>        + ", ReplicationSourceWALReaderThread : " + source.getPeerId()<a name="line.122"></a>
+<span class="sourceLineNo">123</span>        + " inited, replicationBatchSizeCapacity=" + replicationBatchSizeCapacity<a name="line.123"></a>
+<span class="sourceLineNo">124</span>        + ", replicationBatchCountCapacity=" + replicationBatchCountCapacity<a name="line.124"></a>
+<span class="sourceLineNo">125</span>        + ", replicationBatchQueueCapacity=" + batchCount);<a name="line.125"></a>
+<span class="sourceLineNo">126</span>  }<a name="line.126"></a>
+<span class="sourceLineNo">127</span><a name="line.127"></a>
+<span class="sourceLineNo">128</span>  @Override<a name="line.128"></a>
+<span class="sourceLineNo">129</span>  public void run() {<a name="line.129"></a>
+<span class="sourceLineNo">130</span>    int sleepMultiplier = 1;<a name="line.130"></a>
+<span class="sourceLineNo">131</span>    while (isReaderRunning()) { // we only loop back here if something fatal happened to our stream<a name="line.131"></a>
+<span class="sourceLineNo">132</span>      try (WALEntryStream entryStream =<a name="line.132"></a>
+<span class="sourceLineNo">133</span>          new WALEntryStream(logQueue, fs, conf, currentPosition, source.getSourceMetrics())) {<a name="line.133"></a>
+<span class="sourceLineNo">134</span>        while (isReaderRunning()) { // loop here to keep reusing stream while we can<a name="line.134"></a>
+<span class="sourceLineNo">135</span>          if (!checkQuota()) {<a name="line.135"></a>
+<span class="sourceLineNo">136</span>            continue;<a name="line.136"></a>
+<span class="sourceLineNo">137</span>          }<a name="line.137"></a>
+<span class="sourceLineNo">138</span>          WALEntryBatch batch = readWALEntries(entryStream);<a name="line.138"></a>
+<span class="sourceLineNo">139</span>          if (batch != null &amp;&amp; (!batch.getLastSeqIds().isEmpty() || batch.getNbEntries() &gt; 0)) {<a name="line.139"></a>
+<span class="sourceLineNo">140</span>            if (LOG.isTraceEnabled()) {<a name="line.140"></a>
+<span class="sourceLineNo">141</span>              LOG.trace(String.format("Read %s WAL entries eligible for replication",<a name="line.141"></a>
+<span class="sourceLineNo">142</span>                batch.getNbEntries()));<a name="line.142"></a>
+<span class="sourceLineNo">143</span>            }<a name="line.143"></a>
+<span class="sourceLineNo">144</span>            entryBatchQueue.put(batch);<a name="line.144"></a>
+<span class="sourceLineNo">145</span>            sleepMultiplier = 1;<a name="line.145"></a>
+<span class="sourceLineNo">146</span>          } else { // got no entries and didn't advance position in WAL<a name="line.146"></a>
+<span class="sourceLineNo">147</span>            handleEmptyWALEntryBatch(batch, entryStream.getCurrentPath());<a name="line.147"></a>
+<span class="sourceLineNo">148</span>          }<a name="line.148"></a>
+<span class="sourceLineNo">149</span>          currentPosition = entryStream.getPosition();<a name="line.149"></a>
+<span class="sourceLineNo">150</span>          entryStream.reset(); // reuse stream<a name="line.150"></a>
+<span class="sourceLineNo">151</span>        }<a name="line.151"></a>
+<span class="sourceLineNo">152</span>      } catch (IOException | WALEntryStreamRuntimeException e) { // stream related<a name="line.152"></a>
+<span class="sourceLineNo">153</span>        if (sleepMultiplier &lt; maxRetriesMultiplier) {<a name="line.153"></a>
+<span class="sourceLineNo">154</span>          LOG.debug("Failed to read stream of replication entries: " + e);<a name="line.154"></a>
+<span class="sourceLineNo">155</span>          sleepMultiplier++;<a name="line.155"></a>
+<span class="sourceLineNo">156</span>        } else {<a name="line.156"></a>
+<span class="sourceLineNo">157</span>          LOG.error("Failed to read stream of replication entries", e);<a name="line.157"></a>
+<span class="sourceLineNo">158</span>          handleEofException(e);<a name="line.158"></a>
+<span class="sourceLineNo">159</span>        }<a name="line.159"></a>
+<span class="sourceLineNo">160</span>        Threads.sleep(sleepForRetries * sleepMultiplier);<a name="line.160"></a>
+<span class="sourceLineNo">161</span>      } catch (InterruptedException e) {<a name="line.161"></a>
+<span class="sourceLineNo">162</span>        LOG.trace("Interrupted while sleeping between WAL reads");<a name="line.162"></a>
+<span class="sourceLineNo">163</span>        Thread.currentThread().interrupt();<a name="line.163"></a>
+<span class="sourceLineNo">164</span>      }<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 name="line.167"></a>
+<span class="sourceLineNo">168</span>  private WALEntryBatch readWALEntries(WALEntryStream entryStream) throws IOException {<a name="line.168"></a>
+<span class="sourceLineNo">169</span>    WALEntryBatch batch = null;<a name="line.169"></a>
+<span class="sourceLineNo">170</span>    while (entryStream.hasNext()) {<a name="line.170"></a>
+<span class="sourceLineNo">171</span>      if (batch == null) {<a name="line.171"></a>
+<span class="sourceLineNo">172</span>        batch = new WALEntryBatch(replicationBatchCountCapacity, entryStream.getCurrentPath());<a name="line.172"></a>
+<span class="sourceLineNo">173</span>      }<a name="line.173"></a>
+<span class="sourceLineNo">174</span>      Entry entry = entryStream.next();<a name="line.174"></a>
+<span class="sourceLineNo">175</span>      if (updateSerialReplPos(batch, entry)) {<a name="line.175"></a>
+<span class="sourceLineNo">176</span>        batch.lastWalPosition = entryStream.getPosition();<a name="line.176"></a>
+<span class="sourceLineNo">177</span>        break;<a name="line.177"></a>
+<span class="sourceLineNo">178</span>      }<a name="line.178"></a>
+<span class="sourceLineNo">179</span>      entry = filterEntry(entry);<a name="line.179"></a>
+<span class="sourceLineNo">180</span>      if (entry != null) {<a name="line.180"></a>
+<span class="sourceLineNo">181</span>        WALEdit edit = entry.getEdit();<a name="line.181"></a>
+<span class="sourceLineNo">182</span>        if (edit != null &amp;&amp; !edit.isEmpty()) {<a name="line.182"></a>
+<span class="sourceLineNo">183</span>          long entrySize = getEntrySize(entry);<a name="line.183"></a>
+<span class="sourceLineNo">184</span>          batch.addEntry(entry);<a name="line.184"></a>
+<span class="sourceLineNo">185</span>          updateBatchStats(batch, entry, entryStream.getPosition(), entrySize);<a name="line.185"></a>
+<span class="sourceLineNo">186</span>          boolean totalBufferTooLarge = acquireBufferQuota(entrySize);<a name="line.186"></a>
+<span class="sourceLineNo">187</span>          // Stop if too many entries or too big<a name="line.187"></a>
+<span class="sourceLineNo">188</span>          if (totalBufferTooLarge || batch.getHeapSize() &gt;= replicationBatchSizeCapacity<a name="line.188"></a>
+<span class="sourceLineNo">189</span>              || batch.getNbEntries() &gt;= replicationBatchCountCapacity) {<a name="line.189"></a>
+<span class="sourceLineNo">190</span>            break;<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>    }<a name="line.194"></a>
+<span class="sourceLineNo">195</span>    return batch;<a name="line.195"></a>
+<span class="sourceLineNo">196</span>  }<a name="line.196"></a>
+<span class="sourceLineNo">197</span><a name="line.197"></a>
+<span class="sourceLineNo">198</span>  protected void handleEmptyWALEntryBatch(WALEntryBatch batch, Path currentPath)<a name="line.198"></a>
+<span class="sourceLineNo">199</span>      throws InterruptedException {<a name="line.199"></a>
+<span class="sourceLineNo">200</span>    LOG.trace("Didn't read any new entries from WAL");<a name="line.200"></a>
+<span class="sourceLineNo">201</span>    Thread.sleep(sleepForRetries);<a name="line.201"></a>
+<span class="sourceLineNo">202</span>  }<a name="line.202"></a>
+<span class="sourceLineNo">203</span><a name="line.203"></a>
+<span class="sourceLineNo">204</span>  // if we get an EOF due to a zero-length log, and there are other logs in queue<a name="line.204"></a>
+<span class="sourceLineNo">205</span>  // (highly likely we've closed the current log), we've hit the max retries, and autorecovery is<a name="line.205"></a>
+<span class="sourceLineNo">206</span>  // enabled, then dump the log<a name="line.206"></a>
+<span class="sourceLineNo">207</span>  private void handleEofException(Exception e) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span>    if (e.getCause() instanceof EOFException &amp;&amp; logQueue.size() &gt; 1 &amp;&amp; this.eofAutoRecovery) {<a name="line.208"></a>
+<span class="sourceLineNo">209</span>      try {<a name="line.209"></a>
+<span class="sourceLineNo">210</span>        if (fs.getFileStatus(logQueue.peek()).getLen() == 0) {<a name="line.210"></a>
+<span class="sourceLineNo">211</span>          LOG.warn("Forcing removal of 0 length log in queue: " + logQueue.peek());<a name="line.211"></a>
+<span class="sourceLineNo">212</span>          logQueue.remove();<a name="line.212"></a>
+<span class="sourceLineNo">213</span>          currentPosition = 0;<a name="line.213"></a>
+<span class="sourceLineNo">214</span>        }<a name="line.214"></a>
+<span class="sourceLineNo">215</span>      } catch (IOException ioe) {<a name="line.215"></a>
+<span class="sourceLineNo">216</span>        LOG.warn("Couldn't get file length information about log " + logQueue.peek());<a name="line.216"></a>
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+<span class="sourceLineNo">457</span><a name="line.457"></a>
+<span class="sourceLineNo">458</span>    /**<a name="line.458"></a>
+<span class="sourceLineNo">459</span>     * @return the number of HFiles in this batch<a name="line.459"></a>
+<span class="sourceLineNo">460</span>     */<a name="line.460"></a>
+<span class="sourceLineNo">461</span>    public int getNbHFiles() {<a name="line.461"></a>
+<span class="sourceLineNo">462</span>      return nbHFiles;<a name="line.462"></a>
+<span class="sourceLineNo">463</span>    }<a name="line.463"></a>
+<span class="sourceLineNo">464</span><a name="line.464"></a>
+<span class="sourceLineNo">465</span>    /**<a name="line.465"></a>
+<span class="sourceLineNo">466</span>     * @return total number of operations in this batch<a name="line.466"></a>
+<span class="sourceLineNo">467</span>     */<a name="line.467"></a>
+<span class="sourceLineNo">468</span>    public int getNbOperations() {<a name="line.468"></a>
+<span class="sourceLineNo">469</span>      return getNbRowKeys() + getNbHFiles();<a name="line.469"></a>
+<span class="sourceLineNo">470</span>    }<a name="line.470"></a>
+<span class="sourceLineNo">471</span><a name="line.471"></a>
+<span class="sourceLineNo">472</span>    /**<a name="line.472"></a>
+<span class="sourceLineNo">473</span>     * @return the heap size of this batch<a name="line.473"></a>
+<span class="sourceLineNo">474</span>     */<a name="line.474"></a>
+<span class="sourceLineNo">475</span>    public long getHeapSize() {<a name="line.475"></a>
+<span class="sourceLineNo">476</span>      return heapSize;<a name="line.476"></a>
+<span class="sourceLineNo">477</span>    }<a name="line.477"></a>
+<span class="sourceLineNo">478</span><a name="line.478"></a>
+<span class="sourceLineNo">479</span>    /**<a name="line.479"></a>
+<span class="sourceLineNo">480</span>     * @return the last sequenceid for each region if the table has serial-replication scope<a name="line.480"></a>
+<span class="sourceLineNo">481</span>     */<a name="line.481"></a>
+<span class="sourceLineNo">482</span>    public Map&lt;String, Long&gt; getLastSeqIds() {<a name="line.482"></a>
+<span class="sourceLineNo">483</span>      return lastSeqIds;<a name="line.483"></a>
+<span class="sourceLineNo">484</span>    }<a name="line.484"></a>
+<span class="sourceLineNo">485</span><a name="line.485"></a>
+<span class="sourceLineNo">486</span>    private void incrementNbRowKeys(int increment) {<a name="line.486"></a>
+<span class="sourceLineNo">487</span>      nbRowKeys += increment;<a name="line.487"></a>
+<span class="sourceLineNo">488</span>    }<a name="line.488"></a>
+<span class="sourceLineNo">489</span><a name="line.489"></a>
+<span class="sourceLineNo">490</span>    private void incrementNbHFiles(int increment) {<a name="line.490"></a>
+<span class="sourceLineNo">491</span>      nbHFiles += increment;<a name="line.491"></a>
+<span class="sourceLineNo">492</span>    }<a name="line.492"></a>
+<span class="sourceLineNo">493</span><a name="line.493"></a>
+<span class="sourceLineNo">494</span>    private void incrementHeapSize(long increment) {<a name="line.494"></a>
+<span class="sourceLineNo">495</span>      heapSize += increment;<a name="line.495"></a>
+<span class="sourceLineNo">496</span>    }<a name="line.496"></a>
+<span class="sourceLineNo">497</span><a name="line.497"></a>
+<span class="sourceLineNo">498</span>    private void setLastPosition(String region, Long sequenceId) {<a name="line.498"></a>
+<span class="sourceLineNo">499</span>      getLastSeqIds().put(region, sequenceId);<a name="line.499"></a>
+<span class="sourceLineNo">500</span>    }<a name="line.500"></a>
+<span class="sourceLineNo">501</span>  }<a name="line.501"></a>
+<span class="sourceLineNo">502</span>}<a name="line.502"></a>
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+</pre>
+</div>
+</body>
+</html>


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