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Posted to commits@hbase.apache.org by gi...@apache.org on 2017/06/11 14:59:55 UTC
[07/11] hbase-site git commit: Published site at
82d554e3783372cc6b05489452c815b57c06f6cd.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/49852d7b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReaderThread.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReaderThread.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReaderThread.html
index 4958f03..0b3870c 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReaderThread.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReaderThread.html
@@ -26,458 +26,488 @@
<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.IOException;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.util.HashMap;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.Map;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.concurrent.BlockingQueue;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.concurrent.PriorityBlockingQueue;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.29"></a>
-<span class="sourceLineNo">030</span><a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.commons.logging.Log;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.commons.logging.LogFactory;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.fs.FileSystem;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.fs.Path;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.Cell;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HConstants;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.BulkLoadDescriptor;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.StoreDescriptor;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.RSRpcServices;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.regionserver.wal.WALEdit;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.replication.ReplicationQueueInfo;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.replication.WALEntryFilter;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.replication.regionserver.WALEntryStream.WALEntryStreamRuntimeException;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.52"></a>
-<span class="sourceLineNo">053</span><a name="line.53"></a>
-<span class="sourceLineNo">054</span>/**<a name="line.54"></a>
-<span class="sourceLineNo">055</span> * Reads and filters WAL entries, groups the filtered entries into batches, and puts the batches onto a queue<a name="line.55"></a>
-<span class="sourceLineNo">056</span> *<a name="line.56"></a>
-<span class="sourceLineNo">057</span> */<a name="line.57"></a>
-<span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a>
-<span class="sourceLineNo">059</span>@InterfaceStability.Evolving<a name="line.59"></a>
-<span class="sourceLineNo">060</span>public class ReplicationSourceWALReaderThread extends Thread {<a name="line.60"></a>
-<span class="sourceLineNo">061</span> private static final Log LOG = LogFactory.getLog(ReplicationSourceWALReaderThread.class);<a name="line.61"></a>
-<span class="sourceLineNo">062</span><a name="line.62"></a>
-<span class="sourceLineNo">063</span> private PriorityBlockingQueue<Path> logQueue;<a name="line.63"></a>
-<span class="sourceLineNo">064</span> private FileSystem fs;<a name="line.64"></a>
-<span class="sourceLineNo">065</span> private Configuration conf;<a name="line.65"></a>
-<span class="sourceLineNo">066</span> private BlockingQueue<WALEntryBatch> entryBatchQueue;<a name="line.66"></a>
-<span class="sourceLineNo">067</span> // max (heap) size of each batch - multiply by number of batches in queue to get total<a name="line.67"></a>
-<span class="sourceLineNo">068</span> private long replicationBatchSizeCapacity;<a name="line.68"></a>
-<span class="sourceLineNo">069</span> // max count of each batch - multiply by number of batches in queue to get total<a name="line.69"></a>
-<span class="sourceLineNo">070</span> private int replicationBatchCountCapacity;<a name="line.70"></a>
-<span class="sourceLineNo">071</span> // position in the WAL to start reading at<a name="line.71"></a>
-<span class="sourceLineNo">072</span> private long currentPosition;<a name="line.72"></a>
-<span class="sourceLineNo">073</span> private WALEntryFilter filter;<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private long sleepForRetries;<a name="line.74"></a>
-<span class="sourceLineNo">075</span> //Indicates whether this particular worker is running<a name="line.75"></a>
-<span class="sourceLineNo">076</span> private boolean isReaderRunning = true;<a name="line.76"></a>
-<span class="sourceLineNo">077</span> private ReplicationQueueInfo replicationQueueInfo;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> private int maxRetriesMultiplier;<a name="line.78"></a>
-<span class="sourceLineNo">079</span> private MetricsSource metrics;<a name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> private AtomicLong totalBufferUsed;<a name="line.81"></a>
-<span class="sourceLineNo">082</span> private long totalBufferQuota;<a name="line.82"></a>
-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span> /**<a name="line.84"></a>
-<span class="sourceLineNo">085</span> * Creates a reader worker for a given WAL queue. Reads WAL entries off a given queue, batches the<a name="line.85"></a>
-<span class="sourceLineNo">086</span> * entries, and puts them on a batch queue.<a name="line.86"></a>
-<span class="sourceLineNo">087</span> * @param manager replication manager<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * @param replicationQueueInfo<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * @param logQueue The WAL queue to read off of<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * @param startPosition position in the first WAL to start reading from<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * @param fs the files system to use<a name="line.91"></a>
-<span class="sourceLineNo">092</span> * @param conf configuration to use<a name="line.92"></a>
-<span class="sourceLineNo">093</span> * @param filter The filter to use while reading<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * @param metrics replication metrics<a name="line.94"></a>
-<span class="sourceLineNo">095</span> */<a name="line.95"></a>
-<span class="sourceLineNo">096</span> public ReplicationSourceWALReaderThread(ReplicationSourceManager manager,<a name="line.96"></a>
-<span class="sourceLineNo">097</span> ReplicationQueueInfo replicationQueueInfo, PriorityBlockingQueue<Path> logQueue,<a name="line.97"></a>
-<span class="sourceLineNo">098</span> long startPosition,<a name="line.98"></a>
-<span class="sourceLineNo">099</span> FileSystem fs, Configuration conf, WALEntryFilter filter, MetricsSource metrics) {<a name="line.99"></a>
-<span class="sourceLineNo">100</span> this.replicationQueueInfo = replicationQueueInfo;<a name="line.100"></a>
-<span class="sourceLineNo">101</span> this.logQueue = logQueue;<a name="line.101"></a>
-<span class="sourceLineNo">102</span> this.currentPosition = startPosition;<a name="line.102"></a>
-<span class="sourceLineNo">103</span> this.fs = fs;<a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.conf = conf;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.filter = filter;<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 = manager.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.metrics = metrics;<a name="line.119"></a>
-<span class="sourceLineNo">120</span> this.entryBatchQueue = new LinkedBlockingQueue<>(batchCount);<a name="line.120"></a>
-<span class="sourceLineNo">121</span> LOG.info("peerClusterZnode=" + replicationQueueInfo.getPeerClusterZnode()<a name="line.121"></a>
-<span class="sourceLineNo">122</span> + ", ReplicationSourceWALReaderThread : " + replicationQueueInfo.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, metrics)) {<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 = null;<a name="line.138"></a>
-<span class="sourceLineNo">139</span> while (entryStream.hasNext()) {<a name="line.139"></a>
-<span class="sourceLineNo">140</span> if (batch == null) {<a name="line.140"></a>
-<span class="sourceLineNo">141</span> batch = new WALEntryBatch(replicationBatchCountCapacity, entryStream.getCurrentPath());<a name="line.141"></a>
-<span class="sourceLineNo">142</span> }<a name="line.142"></a>
-<span class="sourceLineNo">143</span> Entry entry = entryStream.next();<a name="line.143"></a>
-<span class="sourceLineNo">144</span> if (updateSerialReplPos(batch, entry)) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> batch.lastWalPosition = entryStream.getPosition();<a name="line.145"></a>
-<span class="sourceLineNo">146</span> break;<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span> entry = filterEntry(entry);<a name="line.148"></a>
-<span class="sourceLineNo">149</span> if (entry != null) {<a name="line.149"></a>
-<span class="sourceLineNo">150</span> WALEdit edit = entry.getEdit();<a name="line.150"></a>
-<span class="sourceLineNo">151</span> if (edit != null && !edit.isEmpty()) {<a name="line.151"></a>
-<span class="sourceLineNo">152</span> long entrySize = getEntrySize(entry);<a name="line.152"></a>
-<span class="sourceLineNo">153</span> batch.addEntry(entry);<a name="line.153"></a>
-<span class="sourceLineNo">154</span> updateBatchStats(batch, entry, entryStream.getPosition(), entrySize);<a name="line.154"></a>
-<span class="sourceLineNo">155</span> boolean totalBufferTooLarge = acquireBufferQuota(entrySize);<a name="line.155"></a>
-<span class="sourceLineNo">156</span> // Stop if too many entries or too big<a name="line.156"></a>
-<span class="sourceLineNo">157</span> if (totalBufferTooLarge || batch.getHeapSize() >= replicationBatchSizeCapacity<a name="line.157"></a>
-<span class="sourceLineNo">158</span> || batch.getNbEntries() >= replicationBatchCountCapacity) {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> break;<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> }<a name="line.163"></a>
-<span class="sourceLineNo">164</span> if (batch != null && (!batch.getLastSeqIds().isEmpty() || batch.getNbEntries() > 0)) {<a name="line.164"></a>
-<span class="sourceLineNo">165</span> if (LOG.isTraceEnabled()) {<a name="line.165"></a>
-<span class="sourceLineNo">166</span> LOG.trace(String.format("Read %s WAL entries eligible for replication",<a name="line.166"></a>
-<span class="sourceLineNo">167</span> batch.getNbEntries()));<a name="line.167"></a>
-<span class="sourceLineNo">168</span> }<a name="line.168"></a>
-<span class="sourceLineNo">169</span> entryBatchQueue.put(batch);<a name="line.169"></a>
-<span class="sourceLineNo">170</span> sleepMultiplier = 1;<a name="line.170"></a>
-<span class="sourceLineNo">171</span> } else { // got no entries and didn't advance position in WAL<a name="line.171"></a>
-<span class="sourceLineNo">172</span> LOG.trace("Didn't read any new entries from WAL");<a name="line.172"></a>
-<span class="sourceLineNo">173</span> if (replicationQueueInfo.isQueueRecovered()) {<a name="line.173"></a>
-<span class="sourceLineNo">174</span> // we're done with queue recovery, shut ourself down<a name="line.174"></a>
-<span class="sourceLineNo">175</span> setReaderRunning(false);<a name="line.175"></a>
-<span class="sourceLineNo">176</span> // shuts down shipper thread immediately<a name="line.176"></a>
-<span class="sourceLineNo">177</span> entryBatchQueue.put(batch != null ? batch<a name="line.177"></a>
-<span class="sourceLineNo">178</span> : new WALEntryBatch(replicationBatchCountCapacity, entryStream.getCurrentPath()));<a name="line.178"></a>
-<span class="sourceLineNo">179</span> } else {<a name="line.179"></a>
-<span class="sourceLineNo">180</span> Thread.sleep(sleepForRetries);<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> currentPosition = entryStream.getPosition();<a name="line.183"></a>
-<span class="sourceLineNo">184</span> entryStream.reset(); // reuse stream<a name="line.184"></a>
-<span class="sourceLineNo">185</span> }<a name="line.185"></a>
-<span class="sourceLineNo">186</span> } catch (IOException | WALEntryStreamRuntimeException e) { // stream related<a name="line.186"></a>
-<span class="sourceLineNo">187</span> if (sleepMultiplier < maxRetriesMultiplier) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> LOG.debug("Failed to read stream of replication entries: " + e);<a name="line.188"></a>
-<span class="sourceLineNo">189</span> sleepMultiplier++;<a name="line.189"></a>
-<span class="sourceLineNo">190</span> } else {<a name="line.190"></a>
-<span class="sourceLineNo">191</span> LOG.error("Failed to read stream of replication entries", e);<a name="line.191"></a>
-<span class="sourceLineNo">192</span> }<a name="line.192"></a>
-<span class="sourceLineNo">193</span> Threads.sleep(sleepForRetries * sleepMultiplier);<a name="line.193"></a>
-<span class="sourceLineNo">194</span> } catch (InterruptedException e) {<a name="line.194"></a>
-<span class="sourceLineNo">195</span> LOG.trace("Interrupted while sleeping between WAL reads");<a name="line.195"></a>
-<span class="sourceLineNo">196</span> Thread.currentThread().interrupt();<a name="line.196"></a>
-<span class="sourceLineNo">197</span> }<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><a name="line.200"></a>
-<span class="sourceLineNo">201</span> //returns false if we've already exceeded the global quota<a name="line.201"></a>
-<span class="sourceLineNo">202</span> private boolean checkQuota() {<a name="line.202"></a>
-<span class="sourceLineNo">203</span> // try not to go over total quota<a name="line.203"></a>
-<span class="sourceLineNo">204</span> if (totalBufferUsed.get() > totalBufferQuota) {<a name="line.204"></a>
-<span class="sourceLineNo">205</span> Threads.sleep(sleepForRetries);<a name="line.205"></a>
-<span class="sourceLineNo">206</span> return false;<a name="line.206"></a>
-<span class="sourceLineNo">207</span> }<a name="line.207"></a>
-<span class="sourceLineNo">208</span> return true;<a name="line.208"></a>
-<span class="sourceLineNo">209</span> }<a name="line.209"></a>
-<span class="sourceLineNo">210</span><a name="line.210"></a>
-<span class="sourceLineNo">211</span> private Entry filterEntry(Entry entry) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> Entry filtered = filter.filter(entry);<a name="line.212"></a>
-<span class="sourceLineNo">213</span> if (entry != null && filtered == null) {<a name="line.213"></a>
-<span class="sourceLineNo">214</span> metrics.incrLogEditsFiltered();<a name="line.214"></a>
-<span class="sourceLineNo">215</span> }<a name="line.215"></a>
-<span class="sourceLineNo">216</span> return filtered;<a name="line.216"></a>
-<span class="sourceLineNo">217</span> }<a name="line.217"></a>
-<span class="sourceLineNo">218</span><a name="line.218"></a>
-<span class="sourceLineNo">219</span> /**<a name="line.219"></a>
-<span class="sourceLineNo">220</span> * @return true if we should stop reading because we're at REGION_CLOSE<a name="line.220"></a>
-<span class="sourceLineNo">221</span> */<a name="line.221"></a>
-<span class="sourceLineNo">222</span> private boolean updateSerialReplPos(WALEntryBatch batch, Entry entry) throws IOException {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> if (entry.hasSerialReplicationScope()) {<a name="line.223"></a>
-<span class="sourceLineNo">224</span> String key = Bytes.toString(entry.getKey().getEncodedRegionName());<a name="line.224"></a>
-<span class="sourceLineNo">225</span> batch.setLastPosition(key, entry.getKey().getSequenceId());<a name="line.225"></a>
-<span class="sourceLineNo">226</span> if (!entry.getEdit().getCells().isEmpty()) {<a name="line.226"></a>
-<span class="sourceLineNo">227</span> WALProtos.RegionEventDescriptor maybeEvent =<a name="line.227"></a>
-<span class="sourceLineNo">228</span> WALEdit.getRegionEventDescriptor(entry.getEdit().getCells().get(0));<a name="line.228"></a>
-<span class="sourceLineNo">229</span> if (maybeEvent != null && maybeEvent<a name="line.229"></a>
-<span class="sourceLineNo">230</span> .getEventType() == WALProtos.RegionEventDescriptor.EventType.REGION_CLOSE) {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> // In serially replication, if we move a region to another RS and move it back, we may<a name="line.231"></a>
-<span class="sourceLineNo">232</span> // read logs crossing two sections. We should break at REGION_CLOSE and push the first<a name="line.232"></a>
-<span class="sourceLineNo">233</span> // section first in case of missing the middle section belonging to the other RS.<a name="line.233"></a>
-<span class="sourceLineNo">234</span> // In a worker thread, if we can push the first log of a region, we can push all logs<a name="line.234"></a>
-<span class="sourceLineNo">235</span> // in the same region without waiting until we read a close marker because next time<a name="line.235"></a>
-<span class="sourceLineNo">236</span> // we read logs in this region, it must be a new section and not adjacent with this<a name="line.236"></a>
-<span class="sourceLineNo">237</span> // region. Mark it negative.<a name="line.237"></a>
-<span class="sourceLineNo">238</span> batch.setLastPosition(key, -entry.getKey().getSequenceId());<a name="line.238"></a>
-<span class="sourceLineNo">239</span> return true;<a name="line.239"></a>
-<span class="sourceLineNo">240</span> }<a name="line.240"></a>
-<span class="sourceLineNo">241</span> }<a name="line.241"></a>
-<span class="sourceLineNo">242</span> }<a name="line.242"></a>
-<span class="sourceLineNo">243</span> return false;<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> /**<a name="line.246"></a>
-<span class="sourceLineNo">247</span> * Retrieves the next batch of WAL entries from the queue, waiting up to the specified time for a<a name="line.247"></a>
-<span class="sourceLineNo">248</span> * batch to become available<a name="line.248"></a>
-<span class="sourceLineNo">249</span> * @return A batch of entries, along with the position in the log after reading the batch<a name="line.249"></a>
-<span class="sourceLineNo">250</span> * @throws InterruptedException if interrupted while waiting<a name="line.250"></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 ReplicationSourceWALReaderThread extends Thread {<a name="line.61"></a>
+<span class="sourceLineNo">062</span> private static final Log LOG = LogFactory.getLog(ReplicationSourceWALReaderThread.class);<a name="line.62"></a>
+<span class="sourceLineNo">063</span><a name="line.63"></a>
+<span class="sourceLineNo">064</span> private PriorityBlockingQueue<Path> logQueue;<a name="line.64"></a>
+<span class="sourceLineNo">065</span> private FileSystem fs;<a name="line.65"></a>
+<span class="sourceLineNo">066</span> private Configuration conf;<a name="line.66"></a>
+<span class="sourceLineNo">067</span> private BlockingQueue<WALEntryBatch> entryBatchQueue;<a name="line.67"></a>
+<span class="sourceLineNo">068</span> // max (heap) size of each batch - multiply by number of batches in queue to get total<a name="line.68"></a>
+<span class="sourceLineNo">069</span> private long replicationBatchSizeCapacity;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> // max count of each batch - multiply by number of batches in queue to get total<a name="line.70"></a>
+<span class="sourceLineNo">071</span> private int replicationBatchCountCapacity;<a name="line.71"></a>
+<span class="sourceLineNo">072</span> // position in the WAL to start reading at<a name="line.72"></a>
+<span class="sourceLineNo">073</span> private long currentPosition;<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private WALEntryFilter filter;<a name="line.74"></a>
+<span class="sourceLineNo">075</span> private long sleepForRetries;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> //Indicates whether this particular worker is running<a name="line.76"></a>
+<span class="sourceLineNo">077</span> private boolean isReaderRunning = true;<a name="line.77"></a>
+<span class="sourceLineNo">078</span> private ReplicationQueueInfo replicationQueueInfo;<a name="line.78"></a>
+<span class="sourceLineNo">079</span> private int maxRetriesMultiplier;<a name="line.79"></a>
+<span class="sourceLineNo">080</span> private MetricsSource metrics;<a name="line.80"></a>
+<span class="sourceLineNo">081</span><a name="line.81"></a>
+<span class="sourceLineNo">082</span> private AtomicLong totalBufferUsed;<a name="line.82"></a>
+<span class="sourceLineNo">083</span> private long totalBufferQuota;<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span> /**<a name="line.85"></a>
+<span class="sourceLineNo">086</span> * Creates a reader worker for a given WAL queue. Reads WAL entries off a given queue, batches the<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * entries, and puts them on a batch queue.<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * @param manager replication manager<a name="line.88"></a>
+<span class="sourceLineNo">089</span> * @param replicationQueueInfo<a name="line.89"></a>
+<span class="sourceLineNo">090</span> * @param logQueue The WAL queue to read off of<a name="line.90"></a>
+<span class="sourceLineNo">091</span> * @param startPosition position in the first WAL to start reading from<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * @param fs the files system to use<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * @param conf configuration to use<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 metrics replication metrics<a name="line.95"></a>
+<span class="sourceLineNo">096</span> */<a name="line.96"></a>
+<span class="sourceLineNo">097</span> public ReplicationSourceWALReaderThread(ReplicationSourceManager manager,<a name="line.97"></a>
+<span class="sourceLineNo">098</span> ReplicationQueueInfo replicationQueueInfo, PriorityBlockingQueue<Path> logQueue,<a name="line.98"></a>
+<span class="sourceLineNo">099</span> long startPosition,<a name="line.99"></a>
+<span class="sourceLineNo">100</span> FileSystem fs, Configuration conf, WALEntryFilter filter, MetricsSource metrics) {<a name="line.100"></a>
+<span class="sourceLineNo">101</span> this.replicationQueueInfo = replicationQueueInfo;<a name="line.101"></a>
+<span class="sourceLineNo">102</span> this.logQueue = logQueue;<a name="line.102"></a>
+<span class="sourceLineNo">103</span> this.currentPosition = startPosition;<a name="line.103"></a>
+<span class="sourceLineNo">104</span> this.fs = fs;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> this.conf = conf;<a name="line.105"></a>
+<span class="sourceLineNo">106</span> this.filter = filter;<a name="line.106"></a>
+<span class="sourceLineNo">107</span> this.replicationBatchSizeCapacity =<a name="line.107"></a>
+<span class="sourceLineNo">108</span> this.conf.getLong("replication.source.size.capacity", 1024 * 1024 * 64);<a name="line.108"></a>
+<span class="sourceLineNo">109</span> this.replicationBatchCountCapacity = this.conf.getInt("replication.source.nb.capacity", 25000);<a name="line.109"></a>
+<span class="sourceLineNo">110</span> // memory used will be batchSizeCapacity * (nb.batches + 1)<a name="line.110"></a>
+<span class="sourceLineNo">111</span> // the +1 is for the current thread reading before placing onto the queue<a name="line.111"></a>
+<span class="sourceLineNo">112</span> int batchCount = conf.getInt("replication.source.nb.batches", 1);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> this.totalBufferUsed = manager.getTotalBufferUsed();<a name="line.113"></a>
+<span class="sourceLineNo">114</span> this.totalBufferQuota = conf.getLong(HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_KEY,<a name="line.114"></a>
+<span class="sourceLineNo">115</span> HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> this.sleepForRetries =<a name="line.116"></a>
+<span class="sourceLineNo">117</span> this.conf.getLong("replication.source.sleepforretries", 1000); // 1 second<a name="line.117"></a>
+<span class="sourceLineNo">118</span> this.maxRetriesMultiplier =<a name="line.118"></a>
+<span class="sourceLineNo">119</span> this.conf.getInt("replication.source.maxretriesmultiplier", 300); // 5 minutes @ 1 sec per<a name="line.119"></a>
+<span class="sourceLineNo">120</span> this.metrics = metrics;<a name="line.120"></a>
+<span class="sourceLineNo">121</span> this.entryBatchQueue = new LinkedBlockingQueue<>(batchCount);<a name="line.121"></a>
+<span class="sourceLineNo">122</span> LOG.info("peerClusterZnode=" + replicationQueueInfo.getPeerClusterZnode()<a name="line.122"></a>
+<span class="sourceLineNo">123</span> + ", ReplicationSourceWALReaderThread : " + replicationQueueInfo.getPeerId()<a name="line.123"></a>
+<span class="sourceLineNo">124</span> + " inited, replicationBatchSizeCapacity=" + replicationBatchSizeCapacity<a name="line.124"></a>
+<span class="sourceLineNo">125</span> + ", replicationBatchCountCapacity=" + replicationBatchCountCapacity<a name="line.125"></a>
+<span class="sourceLineNo">126</span> + ", replicationBatchQueueCapacity=" + batchCount);<a name="line.126"></a>
+<span class="sourceLineNo">127</span> }<a name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span> @Override<a name="line.129"></a>
+<span class="sourceLineNo">130</span> public void run() {<a name="line.130"></a>
+<span class="sourceLineNo">131</span> int sleepMultiplier = 1;<a name="line.131"></a>
+<span class="sourceLineNo">132</span> while (isReaderRunning()) { // we only loop back here if something fatal happened to our stream<a name="line.132"></a>
+<span class="sourceLineNo">133</span> try (WALEntryStream entryStream =<a name="line.133"></a>
+<span class="sourceLineNo">134</span> new WALEntryStream(logQueue, fs, conf, currentPosition, metrics)) {<a name="line.134"></a>
+<span class="sourceLineNo">135</span> while (isReaderRunning()) { // loop here to keep reusing stream while we can<a name="line.135"></a>
+<span class="sourceLineNo">136</span> if (!checkQuota()) {<a name="line.136"></a>
+<span class="sourceLineNo">137</span> continue;<a name="line.137"></a>
+<span class="sourceLineNo">138</span> }<a name="line.138"></a>
+<span class="sourceLineNo">139</span> WALEntryBatch batch = null;<a name="line.139"></a>
+<span class="sourceLineNo">140</span> while (entryStream.hasNext()) {<a name="line.140"></a>
+<span class="sourceLineNo">141</span> if (batch == null) {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> batch = new WALEntryBatch(replicationBatchCountCapacity, entryStream.getCurrentPath());<a name="line.142"></a>
+<span class="sourceLineNo">143</span> }<a name="line.143"></a>
+<span class="sourceLineNo">144</span> Entry entry = entryStream.next();<a name="line.144"></a>
+<span class="sourceLineNo">145</span> if (updateSerialReplPos(batch, entry)) {<a name="line.145"></a>
+<span class="sourceLineNo">146</span> batch.lastWalPosition = entryStream.getPosition();<a name="line.146"></a>
+<span class="sourceLineNo">147</span> break;<a name="line.147"></a>
+<span class="sourceLineNo">148</span> }<a name="line.148"></a>
+<span class="sourceLineNo">149</span> entry = filterEntry(entry);<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (entry != null) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> WALEdit edit = entry.getEdit();<a name="line.151"></a>
+<span class="sourceLineNo">152</span> if (edit != null && !edit.isEmpty()) {<a name="line.152"></a>
+<span class="sourceLineNo">153</span> long entrySize = getEntrySize(entry);<a name="line.153"></a>
+<span class="sourceLineNo">154</span> batch.addEntry(entry);<a name="line.154"></a>
+<span class="sourceLineNo">155</span> updateBatchStats(batch, entry, entryStream.getPosition(), entrySize);<a name="line.155"></a>
+<span class="sourceLineNo">156</span> boolean totalBufferTooLarge = acquireBufferQuota(entrySize);<a name="line.156"></a>
+<span class="sourceLineNo">157</span> // Stop if too many entries or too big<a name="line.157"></a>
+<span class="sourceLineNo">158</span> if (totalBufferTooLarge || batch.getHeapSize() >= replicationBatchSizeCapacity<a name="line.158"></a>
+<span class="sourceLineNo">159</span> || batch.getNbEntries() >= replicationBatchCountCapacity) {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> break;<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> }<a name="line.163"></a>
+<span class="sourceLineNo">164</span> }<a name="line.164"></a>
+<span class="sourceLineNo">165</span> if (batch != null && (!batch.getLastSeqIds().isEmpty() || batch.getNbEntries() > 0)) {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> if (LOG.isTraceEnabled()) {<a name="line.166"></a>
+<span class="sourceLineNo">167</span> LOG.trace(String.format("Read %s WAL entries eligible for replication",<a name="line.167"></a>
+<span class="sourceLineNo">168</span> batch.getNbEntries()));<a name="line.168"></a>
+<span class="sourceLineNo">169</span> }<a name="line.169"></a>
+<span class="sourceLineNo">170</span> entryBatchQueue.put(batch);<a name="line.170"></a>
+<span class="sourceLineNo">171</span> sleepMultiplier = 1;<a name="line.171"></a>
+<span class="sourceLineNo">172</span> } else { // got no entries and didn't advance position in WAL<a name="line.172"></a>
+<span class="sourceLineNo">173</span> LOG.trace("Didn't read any new entries from WAL");<a name="line.173"></a>
+<span class="sourceLineNo">174</span> if (replicationQueueInfo.isQueueRecovered()) {<a name="line.174"></a>
+<span class="sourceLineNo">175</span> // we're done with queue recovery, shut ourself down<a name="line.175"></a>
+<span class="sourceLineNo">176</span> setReaderRunning(false);<a name="line.176"></a>
+<span class="sourceLineNo">177</span> // shuts down shipper thread immediately<a name="line.177"></a>
+<span class="sourceLineNo">178</span> entryBatchQueue.put(batch != null ? batch<a name="line.178"></a>
+<span class="sourceLineNo">179</span> : new WALEntryBatch(replicationBatchCountCapacity, entryStream.getCurrentPath()));<a name="line.179"></a>
+<span class="sourceLineNo">180</span> } else {<a name="line.180"></a>
+<span class="sourceLineNo">181</span> Thread.sleep(sleepForRetries);<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> currentPosition = entryStream.getPosition();<a name="line.184"></a>
+<span class="sourceLineNo">185</span> entryStream.reset(); // reuse stream<a name="line.185"></a>
+<span class="sourceLineNo">186</span> }<a name="line.186"></a>
+<span class="sourceLineNo">187</span> } catch (IOException | WALEntryStreamRuntimeException e) { // stream related<a name="line.187"></a>
+<span class="sourceLineNo">188</span> if (sleepMultiplier < maxRetriesMultiplier) {<a name="line.188"></a>
+<span class="sourceLineNo">189</span> LOG.debug("Failed to read stream of replication entries: " + e);<a name="line.189"></a>
+<span class="sourceLineNo">190</span> sleepMultiplier++;<a name="line.190"></a>
+<span class="sourceLineNo">191</span> } else {<a name="line.191"></a>
+<span class="sourceLineNo">192</span> LOG.error("Failed to read stream of replication entries", e);<a name="line.192"></a>
+<span class="sourceLineNo">193</span> handleEofException(e);<a name="line.193"></a>
+<span class="sourceLineNo">194</span> }<a name="line.194"></a>
+<span class="sourceLineNo">195</span> Threads.sleep(sleepForRetries * sleepMultiplier);<a name="line.195"></a>
+<span class="sourceLineNo">196</span> } catch (InterruptedException e) {<a name="line.196"></a>
+<span class="sourceLineNo">197</span> LOG.trace("Interrupted while sleeping between WAL reads");<a name="line.197"></a>
+<span class="sourceLineNo">198</span> Thread.currentThread().interrupt();<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> }<a name="line.201"></a>
+<span class="sourceLineNo">202</span><a name="line.202"></a>
+<span class="sourceLineNo">203</span> // if we get an EOF due to a zero-length log, and there are other logs in queue<a name="line.203"></a>
+<span class="sourceLineNo">204</span> // (highly likely we've closed the current log), we've hit the max retries, and autorecovery is<a name="line.204"></a>
+<span class="sourceLineNo">205</span> // enabled, then dump the log<a name="line.205"></a>
+<span class="sourceLineNo">206</span> private void handleEofException(Exception e) {<a name="line.206"></a>
+<span class="sourceLineNo">207</span> if (e.getCause() instanceof EOFException && logQueue.size() > 1<a name="line.207"></a>
+<span class="sourceLineNo">208</span> && conf.getBoolean("replication.source.eof.autorecovery", false)) {<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>
+<span class="sourceLineNo">217</span> }<a name="line.217"></a>
+<span class="sourceLineNo">218</span> }<a name="line.218"></a>
+<span class="sourceLineNo">219</span> }<a name="line.219"></a>
+<span class="sourceLineNo">220</span><a name="line.220"></a>
+<span class="sourceLineNo">221</span> public Path getCurrentPath() {<a name="line.221"></a>
+<span class="sourceLineNo">222</span> // if we've read some WAL entries, get the Path we read from<a name="line.222"></a>
+<span class="sourceLineNo">223</span> WALEntryBatch batchQueueHead = entryBatchQueue.peek();<a name="line.223"></a>
+<span class="sourceLineNo">224</span> if (batchQueueHead != null) {<a name="line.224"></a>
+<span class="sourceLineNo">225</span> return batchQueueHead.lastWalPath;<a name="line.225"></a>
+<span class="sourceLineNo">226</span> }<a name="line.226"></a>
+<span class="sourceLineNo">227</span> // otherwise, we must be currently reading from the head of the log queue<a name="line.227"></a>
+<span class="sourceLineNo">228</span> return logQueue.peek();<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> //returns false if we've already exceeded the global quota<a name="line.231"></a>
+<span class="sourceLineNo">232</span> private boolean checkQuota() {<a name="line.232"></a>
+<span class="sourceLineNo">233</span> // try not to go over total quota<a name="line.233"></a>
+<span class="sourceLineNo">234</span> if (totalBufferUsed.get() > totalBufferQuota) {<a name="line.234"></a>
+<span class="sourceLineNo">235</span> Threads.sleep(sleepForRetries);<a name="line.235"></a>
+<span class="sourceLineNo">236</span> return false;<a name="line.236"></a>
+<span class="sourceLineNo">237</span> }<a name="line.237"></a>
+<span class="sourceLineNo">238</span> return true;<a name="line.238"></a>
+<span class="sourceLineNo">239</span> }<a name="line.239"></a>
+<span class="sourceLineNo">240</span><a name="line.240"></a>
+<span class="sourceLineNo">241</span> private Entry filterEntry(Entry entry) {<a name="line.241"></a>
+<span class="sourceLineNo">242</span> Entry filtered = filter.filter(entry);<a name="line.242"></a>
+<span class="sourceLineNo">243</span> if (entry != null && filtered == null) {<a name="line.243"></a>
+<span class="sourceLineNo">244</span> metrics.incrLogEditsFiltered();<a name="line.244"></a>
+<span class="sourceLineNo">245</span> }<a name="line.245"></a>
+<span class="sourceLineNo">246</span> return filtered;<a name="line.246"></a>
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