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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/03/12 14:53:47 UTC
[02/13] hbase-site git commit: Published site at
6060d3ba56706d87221f0934d0331a2a73e65167.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f1b07859/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
index 02aead0..be437fe 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.html
@@ -40,383 +40,336 @@
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HConstants;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.replication.WALEntryFilter;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.slf4j.Logger;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.slf4j.LoggerFactory;<a name="line.43"></a>
-<span class="sourceLineNo">044</span><a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.BulkLoadDescriptor;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.StoreDescriptor;<a name="line.46"></a>
-<span class="sourceLineNo">047</span><a name="line.47"></a>
-<span class="sourceLineNo">048</span>/**<a name="line.48"></a>
-<span class="sourceLineNo">049</span> * Reads and filters WAL entries, groups the filtered entries into batches, and puts the batches<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * onto a queue<a name="line.50"></a>
-<span class="sourceLineNo">051</span> */<a name="line.51"></a>
-<span class="sourceLineNo">052</span>@InterfaceAudience.Private<a name="line.52"></a>
-<span class="sourceLineNo">053</span>@InterfaceStability.Evolving<a name="line.53"></a>
-<span class="sourceLineNo">054</span>public class ReplicationSourceWALReader extends Thread {<a name="line.54"></a>
-<span class="sourceLineNo">055</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationSourceWALReader.class);<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
-<span class="sourceLineNo">057</span> private final PriorityBlockingQueue<Path> logQueue;<a name="line.57"></a>
-<span class="sourceLineNo">058</span> private final FileSystem fs;<a name="line.58"></a>
-<span class="sourceLineNo">059</span> private final Configuration conf;<a name="line.59"></a>
-<span class="sourceLineNo">060</span> private final WALEntryFilter filter;<a name="line.60"></a>
-<span class="sourceLineNo">061</span> private final ReplicationSource source;<a name="line.61"></a>
-<span class="sourceLineNo">062</span><a name="line.62"></a>
-<span class="sourceLineNo">063</span> protected final BlockingQueue<WALEntryBatch> entryBatchQueue;<a name="line.63"></a>
-<span class="sourceLineNo">064</span> // max (heap) size of each batch - multiply by number of batches in queue to get total<a name="line.64"></a>
-<span class="sourceLineNo">065</span> private final long replicationBatchSizeCapacity;<a name="line.65"></a>
-<span class="sourceLineNo">066</span> // max count of each batch - multiply by number of batches in queue to get total<a name="line.66"></a>
-<span class="sourceLineNo">067</span> protected final int replicationBatchCountCapacity;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> // position in the WAL to start reading at<a name="line.68"></a>
-<span class="sourceLineNo">069</span> private long currentPosition;<a name="line.69"></a>
-<span class="sourceLineNo">070</span> private final long sleepForRetries;<a name="line.70"></a>
-<span class="sourceLineNo">071</span> private final int maxRetriesMultiplier;<a name="line.71"></a>
-<span class="sourceLineNo">072</span> private final boolean eofAutoRecovery;<a name="line.72"></a>
-<span class="sourceLineNo">073</span><a name="line.73"></a>
-<span class="sourceLineNo">074</span> // used to store the first cell in an entry before filtering. This is because that if serial<a name="line.74"></a>
-<span class="sourceLineNo">075</span> // replication is enabled, we may find out that an entry can not be pushed after filtering. And<a name="line.75"></a>
-<span class="sourceLineNo">076</span> // when we try the next time, the cells maybe null since the entry has already been filtered,<a name="line.76"></a>
-<span class="sourceLineNo">077</span> // especially for region event wal entries. And this can also used to determine whether we can<a name="line.77"></a>
-<span class="sourceLineNo">078</span> // skip filtering.<a name="line.78"></a>
-<span class="sourceLineNo">079</span> private Cell firstCellInEntryBeforeFiltering;<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> private final SerialReplicationChecker serialReplicationChecker;<a name="line.87"></a>
-<span class="sourceLineNo">088</span><a name="line.88"></a>
-<span class="sourceLineNo">089</span> /**<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * Creates a reader worker for a given WAL queue. Reads WAL entries off a given queue, batches the<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * entries, and puts them on a batch queue.<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 logQueue The WAL queue to read off of<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * @param startPosition position in the first WAL to start reading from<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param filter The filter to use while reading<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * @param source replication source<a name="line.97"></a>
-<span class="sourceLineNo">098</span> */<a name="line.98"></a>
-<span class="sourceLineNo">099</span> public ReplicationSourceWALReader(FileSystem fs, Configuration conf,<a name="line.99"></a>
-<span class="sourceLineNo">100</span> PriorityBlockingQueue<Path> logQueue, long startPosition, WALEntryFilter filter,<a name="line.100"></a>
-<span class="sourceLineNo">101</span> ReplicationSource source) {<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.source = source;<a name="line.107"></a>
-<span class="sourceLineNo">108</span> this.replicationBatchSizeCapacity =<a name="line.108"></a>
-<span class="sourceLineNo">109</span> this.conf.getLong("replication.source.size.capacity", 1024 * 1024 * 64);<a name="line.109"></a>
-<span class="sourceLineNo">110</span> this.replicationBatchCountCapacity = this.conf.getInt("replication.source.nb.capacity", 25000);<a name="line.110"></a>
-<span class="sourceLineNo">111</span> // memory used will be batchSizeCapacity * (nb.batches + 1)<a name="line.111"></a>
-<span class="sourceLineNo">112</span> // the +1 is for the current thread reading before placing onto the queue<a name="line.112"></a>
-<span class="sourceLineNo">113</span> int batchCount = conf.getInt("replication.source.nb.batches", 1);<a name="line.113"></a>
-<span class="sourceLineNo">114</span> this.totalBufferUsed = source.getSourceManager().getTotalBufferUsed();<a name="line.114"></a>
-<span class="sourceLineNo">115</span> this.totalBufferQuota = conf.getLong(HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_KEY,<a name="line.115"></a>
-<span class="sourceLineNo">116</span> HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT);<a name="line.116"></a>
-<span class="sourceLineNo">117</span> this.sleepForRetries =<a name="line.117"></a>
-<span class="sourceLineNo">118</span> this.conf.getLong("replication.source.sleepforretries", 1000); // 1 second<a name="line.118"></a>
-<span class="sourceLineNo">119</span> this.maxRetriesMultiplier =<a name="line.119"></a>
-<span class="sourceLineNo">120</span> this.conf.getInt("replication.source.maxretriesmultiplier", 300); // 5 minutes @ 1 sec per<a name="line.120"></a>
-<span class="sourceLineNo">121</span> this.eofAutoRecovery = conf.getBoolean("replication.source.eof.autorecovery", false);<a name="line.121"></a>
-<span class="sourceLineNo">122</span> this.entryBatchQueue = new LinkedBlockingQueue<>(batchCount);<a name="line.122"></a>
-<span class="sourceLineNo">123</span> this.serialReplicationChecker = new SerialReplicationChecker(conf, source);<a name="line.123"></a>
-<span class="sourceLineNo">124</span> LOG.info("peerClusterZnode=" + source.getQueueId()<a name="line.124"></a>
-<span class="sourceLineNo">125</span> + ", ReplicationSourceWALReaderThread : " + source.getPeerId()<a name="line.125"></a>
-<span class="sourceLineNo">126</span> + " inited, replicationBatchSizeCapacity=" + replicationBatchSizeCapacity<a name="line.126"></a>
-<span class="sourceLineNo">127</span> + ", replicationBatchCountCapacity=" + replicationBatchCountCapacity<a name="line.127"></a>
-<span class="sourceLineNo">128</span> + ", replicationBatchQueueCapacity=" + batchCount);<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> @Override<a name="line.131"></a>
-<span class="sourceLineNo">132</span> public void run() {<a name="line.132"></a>
-<span class="sourceLineNo">133</span> int sleepMultiplier = 1;<a name="line.133"></a>
-<span class="sourceLineNo">134</span> while (isReaderRunning()) { // we only loop back here if something fatal happened to our stream<a name="line.134"></a>
-<span class="sourceLineNo">135</span> try (WALEntryStream entryStream =<a name="line.135"></a>
-<span class="sourceLineNo">136</span> new WALEntryStream(logQueue, fs, conf, currentPosition,<a name="line.136"></a>
-<span class="sourceLineNo">137</span> source.getWALFileLengthProvider(), source.getServerWALsBelongTo(),<a name="line.137"></a>
-<span class="sourceLineNo">138</span> source.getSourceMetrics())) {<a name="line.138"></a>
-<span class="sourceLineNo">139</span> while (isReaderRunning()) { // loop here to keep reusing stream while we can<a name="line.139"></a>
-<span class="sourceLineNo">140</span> if (!checkQuota()) {<a name="line.140"></a>
-<span class="sourceLineNo">141</span> continue;<a name="line.141"></a>
-<span class="sourceLineNo">142</span> }<a name="line.142"></a>
-<span class="sourceLineNo">143</span> WALEntryBatch batch = readWALEntries(entryStream);<a name="line.143"></a>
-<span class="sourceLineNo">144</span> if (batch != null) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> // need to propagate the batch even it has no entries since it may carry the last<a name="line.145"></a>
-<span class="sourceLineNo">146</span> // sequence id information for serial replication.<a name="line.146"></a>
-<span class="sourceLineNo">147</span> LOG.trace("Read {} WAL entries eligible for replication", batch.getNbEntries());<a name="line.147"></a>
-<span class="sourceLineNo">148</span> entryBatchQueue.put(batch);<a name="line.148"></a>
-<span class="sourceLineNo">149</span> sleepMultiplier = 1;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> } else { // got no entries and didn't advance position in WAL<a name="line.150"></a>
-<span class="sourceLineNo">151</span> handleEmptyWALEntryBatch(entryStream.getCurrentPath());<a name="line.151"></a>
-<span class="sourceLineNo">152</span> }<a name="line.152"></a>
-<span class="sourceLineNo">153</span> currentPosition = entryStream.getPosition();<a name="line.153"></a>
-<span class="sourceLineNo">154</span> entryStream.reset(); // reuse stream<a name="line.154"></a>
-<span class="sourceLineNo">155</span> }<a name="line.155"></a>
-<span class="sourceLineNo">156</span> } catch (IOException e) { // stream related<a name="line.156"></a>
-<span class="sourceLineNo">157</span> if (sleepMultiplier < maxRetriesMultiplier) {<a name="line.157"></a>
-<span class="sourceLineNo">158</span> LOG.debug("Failed to read stream of replication entries: " + e);<a name="line.158"></a>
-<span class="sourceLineNo">159</span> sleepMultiplier++;<a name="line.159"></a>
-<span class="sourceLineNo">160</span> } else {<a name="line.160"></a>
-<span class="sourceLineNo">161</span> LOG.error("Failed to read stream of replication entries", e);<a name="line.161"></a>
-<span class="sourceLineNo">162</span> handleEofException(e);<a name="line.162"></a>
-<span class="sourceLineNo">163</span> }<a name="line.163"></a>
-<span class="sourceLineNo">164</span> Threads.sleep(sleepForRetries * sleepMultiplier);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> } catch (InterruptedException e) {<a name="line.165"></a>
-<span class="sourceLineNo">166</span> LOG.trace("Interrupted while sleeping between WAL reads");<a name="line.166"></a>
-<span class="sourceLineNo">167</span> Thread.currentThread().interrupt();<a name="line.167"></a>
-<span class="sourceLineNo">168</span> }<a name="line.168"></a>
-<span class="sourceLineNo">169</span> }<a name="line.169"></a>
-<span class="sourceLineNo">170</span> }<a name="line.170"></a>
-<span class="sourceLineNo">171</span><a name="line.171"></a>
-<span class="sourceLineNo">172</span> private void removeEntryFromStream(WALEntryStream entryStream, WALEntryBatch batch)<a name="line.172"></a>
-<span class="sourceLineNo">173</span> throws IOException {<a name="line.173"></a>
-<span class="sourceLineNo">174</span> entryStream.next();<a name="line.174"></a>
-<span class="sourceLineNo">175</span> firstCellInEntryBeforeFiltering = null;<a name="line.175"></a>
-<span class="sourceLineNo">176</span> batch.setLastWalPosition(entryStream.getPosition());<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> private WALEntryBatch readWALEntries(WALEntryStream entryStream)<a name="line.179"></a>
-<span class="sourceLineNo">180</span> throws IOException, InterruptedException {<a name="line.180"></a>
-<span class="sourceLineNo">181</span> if (!entryStream.hasNext()) {<a name="line.181"></a>
-<span class="sourceLineNo">182</span> return null;<a name="line.182"></a>
-<span class="sourceLineNo">183</span> }<a name="line.183"></a>
-<span class="sourceLineNo">184</span> long positionBefore = entryStream.getPosition();<a name="line.184"></a>
-<span class="sourceLineNo">185</span> WALEntryBatch batch =<a name="line.185"></a>
-<span class="sourceLineNo">186</span> new WALEntryBatch(replicationBatchCountCapacity, entryStream.getCurrentPath());<a name="line.186"></a>
-<span class="sourceLineNo">187</span> do {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> Entry entry = entryStream.peek();<a name="line.188"></a>
-<span class="sourceLineNo">189</span> boolean isSerial = source.isSerial();<a name="line.189"></a>
-<span class="sourceLineNo">190</span> boolean doFiltering = true;<a name="line.190"></a>
-<span class="sourceLineNo">191</span> if (isSerial) {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> if (firstCellInEntryBeforeFiltering == null) {<a name="line.192"></a>
-<span class="sourceLineNo">193</span> assert !entry.getEdit().isEmpty() : "should not write empty edits";<a name="line.193"></a>
-<span class="sourceLineNo">194</span> // Used to locate the region record in meta table. In WAL we only have the table name and<a name="line.194"></a>
-<span class="sourceLineNo">195</span> // encoded region name which can not be mapping to region name without scanning all the<a name="line.195"></a>
-<span class="sourceLineNo">196</span> // records for a table, so we need a start key, just like what we have done at client side<a name="line.196"></a>
-<span class="sourceLineNo">197</span> // when locating a region. For the markers, we will use the start key of the region as the<a name="line.197"></a>
-<span class="sourceLineNo">198</span> // row key for the edit. And we need to do this before filtering since all the cells may<a name="line.198"></a>
-<span class="sourceLineNo">199</span> // be filtered out, especially that for the markers.<a name="line.199"></a>
-<span class="sourceLineNo">200</span> firstCellInEntryBeforeFiltering = entry.getEdit().getCells().get(0);<a name="line.200"></a>
-<span class="sourceLineNo">201</span> } else {<a name="line.201"></a>
-<span class="sourceLineNo">202</span> // if this is not null then we know that the entry has already been filtered.<a name="line.202"></a>
-<span class="sourceLineNo">203</span> doFiltering = false;<a name="line.203"></a>
-<span class="sourceLineNo">204</span> }<a name="line.204"></a>
-<span class="sourceLineNo">205</span> }<a name="line.205"></a>
-<span class="sourceLineNo">206</span><a name="line.206"></a>
-<span class="sourceLineNo">207</span> if (doFiltering) {<a name="line.207"></a>
-<span class="sourceLineNo">208</span> entry = filterEntry(entry);<a name="line.208"></a>
-<span class="sourceLineNo">209</span> }<a name="line.209"></a>
-<span class="sourceLineNo">210</span> if (entry != null) {<a name="line.210"></a>
-<span class="sourceLineNo">211</span> if (isSerial) {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> if (!serialReplicationChecker.canPush(entry, firstCellInEntryBeforeFiltering)) {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> if (batch.getLastWalPosition() > positionBefore) {<a name="line.213"></a>
-<span class="sourceLineNo">214</span> // we have something that can push, break<a name="line.214"></a>
-<span class="sourceLineNo">215</span> break;<a name="line.215"></a>
-<span class="sourceLineNo">216</span> } else {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> serialReplicationChecker.waitUntilCanPush(entry, firstCellInEntryBeforeFiltering);<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> // arrive here means we can push the entry, record the last sequence id<a name="line.220"></a>
-<span class="sourceLineNo">221</span> batch.setLastSeqId(Bytes.toString(entry.getKey().getEncodedRegionName()),<a name="line.221"></a>
-<span class="sourceLineNo">222</span> entry.getKey().getSequenceId());<a name="line.222"></a>
-<span class="sourceLineNo">223</span> }<a name="line.223"></a>
-<span class="sourceLineNo">224</span> // actually remove the entry.<a name="line.224"></a>
-<span class="sourceLineNo">225</span> removeEntryFromStream(entryStream, batch);<a name="line.225"></a>
-<span class="sourceLineNo">226</span> WALEdit edit = entry.getEdit();<a name="line.226"></a>
-<span class="sourceLineNo">227</span> if (edit != null && !edit.isEmpty()) {<a name="line.227"></a>
-<span class="sourceLineNo">228</span> long entrySize = getEntrySize(entry);<a name="line.228"></a>
-<span class="sourceLineNo">229</span> batch.addEntry(entry);<a name="line.229"></a>
-<span class="sourceLineNo">230</span> updateBatchStats(batch, entry, entrySize);<a name="line.230"></a>
-<span class="sourceLineNo">231</span> boolean totalBufferTooLarge = acquireBufferQuota(entrySize);<a name="line.231"></a>
-<span class="sourceLineNo">232</span> // Stop if too many entries or too big<a name="line.232"></a>
-<span class="sourceLineNo">233</span> if (totalBufferTooLarge || batch.getHeapSize() >= replicationBatchSizeCapacity ||<a name="line.233"></a>
-<span class="sourceLineNo">234</span> batch.getNbEntries() >= replicationBatchCountCapacity) {<a name="line.234"></a>
-<span class="sourceLineNo">235</span> break;<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> } else {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> // actually remove the entry.<a name="line.239"></a>
-<span class="sourceLineNo">240</span> removeEntryFromStream(entryStream, batch);<a name="line.240"></a>
-<span class="sourceLineNo">241</span> }<a name="line.241"></a>
-<span class="sourceLineNo">242</span> } while (entryStream.hasNext());<a name="line.242"></a>
-<span class="sourceLineNo">243</span> return batch;<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> protected void handleEmptyWALEntryBatch(Path currentPath) throws InterruptedException {<a name="line.246"></a>
-<span class="sourceLineNo">247</span> LOG.trace("Didn't read any new entries from WAL");<a name="line.247"></a>
-<span class="sourceLineNo">248</span> Thread.sleep(sleepForRetries);<a name="line.248"></a>
-<span class="sourceLineNo">249</span> }<a name="line.249"></a>
-<span class="sourceLineNo">250</span><a name="line.250"></a>
-<span class="sourceLineNo">251</span> // if we get an EOF due to a zero-length log, and there are other logs in queue<a name="line.251"></a>
-<span class="sourceLineNo">252</span> // (highly likely we've closed the current log), we've hit the max retries, and autorecovery is<a name="line.252"></a>
-<span class="sourceLineNo">253</span> // enabled, then dump the log<a name="line.253"></a>
-<span class="sourceLineNo">254</span> private void handleEofException(IOException e) {<a name="line.254"></a>
-<span class="sourceLineNo">255</span> if ((e instanceof EOFException || e.getCause() instanceof EOFException) &&<a name="line.255"></a>
-<span class="sourceLineNo">256</span> logQueue.size() > 1 && this.eofAutoRecovery) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> try {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> if (fs.getFileStatus(logQueue.peek()).getLen() == 0) {<a name="line.258"></a>
-<span class="sourceLineNo">259</span> LOG.warn("Forcing removal of 0 length log in queue: " + logQueue.peek());<a name="line.259"></a>
-<span class="sourceLineNo">260</span> logQueue.remove();<a name="line.260"></a>
-<span class="sourceLineNo">261</span> currentPosition = 0;<a name="line.261"></a>
-<span class="sourceLineNo">262</span> }<a name="line.262"></a>
-<span class="sourceLineNo">263</span> } catch (IOException ioe) {<a name="line.263"></a>
-<span class="sourceLineNo">264</span> LOG.warn("Couldn't get file length information about log " + logQueue.peek());<a name="line.264"></a>
-<span class="sourceLineNo">265</span> }<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> public Path getCurrentPath() {<a name="line.269"></a>
-<span class="sourceLineNo">270</span> // if we've read some WAL entries, get the Path we read from<a name="line.270"></a>
-<span class="sourceLineNo">271</span> WALEntryBatch batchQueueHead = entryBatchQueue.peek();<a name="line.271"></a>
-<span class="sourceLineNo">272</span> if (batchQueueHead != null) {<a name="line.272"></a>
-<span class="sourceLineNo">273</span> return batchQueueHead.getLastWalPath();<a name="line.273"></a>
-<span class="sourceLineNo">274</span> }<a name="line.274"></a>
-<span class="sourceLineNo">275</span> // otherwise, we must be currently reading from the head of the log queue<a name="line.275"></a>
-<span class="sourceLineNo">276</span> return logQueue.peek();<a name="line.276"></a>
-<span class="sourceLineNo">277</span> }<a name="line.277"></a>
-<span class="sourceLineNo">278</span><a name="line.278"></a>
-<span class="sourceLineNo">279</span> //returns false if we've already exceeded the global quota<a name="line.279"></a>
-<span class="sourceLineNo">280</span> private boolean checkQuota() {<a name="line.280"></a>
-<span class="sourceLineNo">281</span> // try not to go over total quota<a name="line.281"></a>
-<span class="sourceLineNo">282</span> if (totalBufferUsed.get() > totalBufferQuota) {<a name="line.282"></a>
-<span class="sourceLineNo">283</span> Threads.sleep(sleepForRetries);<a name="line.283"></a>
-<span class="sourceLineNo">284</span> return false;<a name="line.284"></a>
-<span class="sourceLineNo">285</span> }<a name="line.285"></a>
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-<span class="sourceLineNo">290</span> Entry filtered = filter.filter(entry);<a name="line.290"></a>
-<span class="sourceLineNo">291</span> if (entry != null && filtered == null) {<a name="line.291"></a>
-<span class="sourceLineNo">292</span> source.getSourceMetrics().incrLogEditsFiltered();<a name="line.292"></a>
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-<span class="sourceLineNo">299</span> * batch to become available<a name="line.299"></a>
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-<span class="sourceLineNo">304</span> return entryBatchQueue.take();<a name="line.304"></a>
-<span class="sourceLineNo">305</span> }<a name="line.305"></a>
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-<span class="sourceLineNo">309</span> return edit.heapSize() + calculateTotalSizeOfStoreFiles(edit);<a name="line.309"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.slf4j.Logger;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.slf4j.LoggerFactory;<a name="line.42"></a>
+<span class="sourceLineNo">043</span><a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.BulkLoadDescriptor;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.WALProtos.StoreDescriptor;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>/**<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * Reads and filters WAL entries, groups the filtered entries into batches, and puts the batches<a name="line.48"></a>
+<span class="sourceLineNo">049</span> * onto a queue<a name="line.49"></a>
+<span class="sourceLineNo">050</span> */<a name="line.50"></a>
+<span class="sourceLineNo">051</span>@InterfaceAudience.Private<a name="line.51"></a>
+<span class="sourceLineNo">052</span>@InterfaceStability.Evolving<a name="line.52"></a>
+<span class="sourceLineNo">053</span>class ReplicationSourceWALReader extends Thread {<a name="line.53"></a>
+<span class="sourceLineNo">054</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationSourceWALReader.class);<a name="line.54"></a>
+<span class="sourceLineNo">055</span><a name="line.55"></a>
+<span class="sourceLineNo">056</span> private final PriorityBlockingQueue<Path> logQueue;<a name="line.56"></a>
+<span class="sourceLineNo">057</span> private final FileSystem fs;<a name="line.57"></a>
+<span class="sourceLineNo">058</span> private final Configuration conf;<a name="line.58"></a>
+<span class="sourceLineNo">059</span> private final WALEntryFilter filter;<a name="line.59"></a>
+<span class="sourceLineNo">060</span> private final ReplicationSource source;<a name="line.60"></a>
+<span class="sourceLineNo">061</span><a name="line.61"></a>
+<span class="sourceLineNo">062</span> protected final BlockingQueue<WALEntryBatch> entryBatchQueue;<a name="line.62"></a>
+<span class="sourceLineNo">063</span> // max (heap) size of each batch - multiply by number of batches in queue to get total<a name="line.63"></a>
+<span class="sourceLineNo">064</span> private final long replicationBatchSizeCapacity;<a name="line.64"></a>
+<span class="sourceLineNo">065</span> // max count of each batch - multiply by number of batches in queue to get total<a name="line.65"></a>
+<span class="sourceLineNo">066</span> private final int replicationBatchCountCapacity;<a name="line.66"></a>
+<span class="sourceLineNo">067</span> // position in the WAL to start reading at<a name="line.67"></a>
+<span class="sourceLineNo">068</span> private long currentPosition;<a name="line.68"></a>
+<span class="sourceLineNo">069</span> private final long sleepForRetries;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> private final int maxRetriesMultiplier;<a name="line.70"></a>
+<span class="sourceLineNo">071</span> private final boolean eofAutoRecovery;<a name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span> //Indicates whether this particular worker is running<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private boolean isReaderRunning = true;<a name="line.74"></a>
+<span class="sourceLineNo">075</span><a name="line.75"></a>
+<span class="sourceLineNo">076</span> private AtomicLong totalBufferUsed;<a name="line.76"></a>
+<span class="sourceLineNo">077</span> private long totalBufferQuota;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span> /**<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * Creates a reader worker for a given WAL queue. Reads WAL entries off a given queue, batches the<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * entries, and puts them on a batch queue.<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * @param fs the files system to use<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * @param conf configuration to use<a name="line.83"></a>
+<span class="sourceLineNo">084</span> * @param logQueue The WAL queue to read off of<a name="line.84"></a>
+<span class="sourceLineNo">085</span> * @param startPosition position in the first WAL to start reading from<a name="line.85"></a>
+<span class="sourceLineNo">086</span> * @param filter The filter to use while reading<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * @param source replication source<a name="line.87"></a>
+<span class="sourceLineNo">088</span> */<a name="line.88"></a>
+<span class="sourceLineNo">089</span> public ReplicationSourceWALReader(FileSystem fs, Configuration conf,<a name="line.89"></a>
+<span class="sourceLineNo">090</span> PriorityBlockingQueue<Path> logQueue, long startPosition, WALEntryFilter filter,<a name="line.90"></a>
+<span class="sourceLineNo">091</span> ReplicationSource source) {<a name="line.91"></a>
+<span class="sourceLineNo">092</span> this.logQueue = logQueue;<a name="line.92"></a>
+<span class="sourceLineNo">093</span> this.currentPosition = startPosition;<a name="line.93"></a>
+<span class="sourceLineNo">094</span> this.fs = fs;<a name="line.94"></a>
+<span class="sourceLineNo">095</span> this.conf = conf;<a name="line.95"></a>
+<span class="sourceLineNo">096</span> this.filter = filter;<a name="line.96"></a>
+<span class="sourceLineNo">097</span> this.source = source;<a name="line.97"></a>
+<span class="sourceLineNo">098</span> this.replicationBatchSizeCapacity =<a name="line.98"></a>
+<span class="sourceLineNo">099</span> this.conf.getLong("replication.source.size.capacity", 1024 * 1024 * 64);<a name="line.99"></a>
+<span class="sourceLineNo">100</span> this.replicationBatchCountCapacity = this.conf.getInt("replication.source.nb.capacity", 25000);<a name="line.100"></a>
+<span class="sourceLineNo">101</span> // memory used will be batchSizeCapacity * (nb.batches + 1)<a name="line.101"></a>
+<span class="sourceLineNo">102</span> // the +1 is for the current thread reading before placing onto the queue<a name="line.102"></a>
+<span class="sourceLineNo">103</span> int batchCount = conf.getInt("replication.source.nb.batches", 1);<a name="line.103"></a>
+<span class="sourceLineNo">104</span> this.totalBufferUsed = source.getSourceManager().getTotalBufferUsed();<a name="line.104"></a>
+<span class="sourceLineNo">105</span> this.totalBufferQuota = conf.getLong(HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_KEY,<a name="line.105"></a>
+<span class="sourceLineNo">106</span> HConstants.REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT);<a name="line.106"></a>
+<span class="sourceLineNo">107</span> this.sleepForRetries =<a name="line.107"></a>
+<span class="sourceLineNo">108</span> this.conf.getLong("replication.source.sleepforretries", 1000); // 1 second<a name="line.108"></a>
+<span class="sourceLineNo">109</span> this.maxRetriesMultiplier =<a name="line.109"></a>
+<span class="sourceLineNo">110</span> this.conf.getInt("replication.source.maxretriesmultiplier", 300); // 5 minutes @ 1 sec per<a name="line.110"></a>
+<span class="sourceLineNo">111</span> this.eofAutoRecovery = conf.getBoolean("replication.source.eof.autorecovery", false);<a name="line.111"></a>
+<span class="sourceLineNo">112</span> this.entryBatchQueue = new LinkedBlockingQueue<>(batchCount);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> LOG.info("peerClusterZnode=" + source.getQueueId()<a name="line.113"></a>
+<span class="sourceLineNo">114</span> + ", ReplicationSourceWALReaderThread : " + source.getPeerId()<a name="line.114"></a>
+<span class="sourceLineNo">115</span> + " inited, replicationBatchSizeCapacity=" + replicationBatchSizeCapacity<a name="line.115"></a>
+<span class="sourceLineNo">116</span> + ", replicationBatchCountCapacity=" + replicationBatchCountCapacity<a name="line.116"></a>
+<span class="sourceLineNo">117</span> + ", replicationBatchQueueCapacity=" + batchCount);<a name="line.117"></a>
+<span class="sourceLineNo">118</span> }<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
+<span class="sourceLineNo">120</span> @Override<a name="line.120"></a>
+<span class="sourceLineNo">121</span> public void run() {<a name="line.121"></a>
+<span class="sourceLineNo">122</span> int sleepMultiplier = 1;<a name="line.122"></a>
+<span class="sourceLineNo">123</span> while (isReaderRunning()) { // we only loop back here if something fatal happened to our stream<a name="line.123"></a>
+<span class="sourceLineNo">124</span> try (WALEntryStream entryStream =<a name="line.124"></a>
+<span class="sourceLineNo">125</span> new WALEntryStream(logQueue, fs, conf, currentPosition,<a name="line.125"></a>
+<span class="sourceLineNo">126</span> source.getWALFileLengthProvider(), source.getServerWALsBelongTo(),<a name="line.126"></a>
+<span class="sourceLineNo">127</span> source.getSourceMetrics())) {<a name="line.127"></a>
+<span class="sourceLineNo">128</span> while (isReaderRunning()) { // loop here to keep reusing stream while we can<a name="line.128"></a>
+<span class="sourceLineNo">129</span> if (!checkQuota()) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> continue;<a name="line.130"></a>
+<span class="sourceLineNo">131</span> }<a name="line.131"></a>
+<span class="sourceLineNo">132</span> WALEntryBatch batch = readWALEntries(entryStream);<a name="line.132"></a>
+<span class="sourceLineNo">133</span> if (batch != null) {<a name="line.133"></a>
+<span class="sourceLineNo">134</span> // need to propagate the batch even it has no entries since it may carry the last<a name="line.134"></a>
+<span class="sourceLineNo">135</span> // sequence id information for serial replication.<a name="line.135"></a>
+<span class="sourceLineNo">136</span> LOG.trace("Read {} WAL entries eligible for replication", batch.getNbEntries());<a name="line.136"></a>
+<span class="sourceLineNo">137</span> entryBatchQueue.put(batch);<a name="line.137"></a>
+<span class="sourceLineNo">138</span> sleepMultiplier = 1;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> } else { // got no entries and didn't advance position in WAL<a name="line.139"></a>
+<span class="sourceLineNo">140</span> handleEmptyWALEntryBatch(entryStream.getCurrentPath());<a name="line.140"></a>
+<span class="sourceLineNo">141</span> }<a name="line.141"></a>
+<span class="sourceLineNo">142</span> currentPosition = entryStream.getPosition();<a name="line.142"></a>
+<span class="sourceLineNo">143</span> entryStream.reset(); // reuse stream<a name="line.143"></a>
+<span class="sourceLineNo">144</span> }<a name="line.144"></a>
+<span class="sourceLineNo">145</span> } catch (IOException e) { // stream related<a name="line.145"></a>
+<span class="sourceLineNo">146</span> if (sleepMultiplier < maxRetriesMultiplier) {<a name="line.146"></a>
+<span class="sourceLineNo">147</span> LOG.debug("Failed to read stream of replication entries: " + e);<a name="line.147"></a>
+<span class="sourceLineNo">148</span> sleepMultiplier++;<a name="line.148"></a>
+<span class="sourceLineNo">149</span> } else {<a name="line.149"></a>
+<span class="sourceLineNo">150</span> LOG.error("Failed to read stream of replication entries", e);<a name="line.150"></a>
+<span class="sourceLineNo">151</span> handleEofException(e);<a name="line.151"></a>
+<span class="sourceLineNo">152</span> }<a name="line.152"></a>
+<span class="sourceLineNo">153</span> Threads.sleep(sleepForRetries * sleepMultiplier);<a name="line.153"></a>
+<span class="sourceLineNo">154</span> } catch (InterruptedException e) {<a name="line.154"></a>
+<span class="sourceLineNo">155</span> LOG.trace("Interrupted while sleeping between WAL reads");<a name="line.155"></a>
+<span class="sourceLineNo">156</span> Thread.currentThread().interrupt();<a name="line.156"></a>
+<span class="sourceLineNo">157</span> }<a name="line.157"></a>
+<span class="sourceLineNo">158</span> }<a name="line.158"></a>
+<span class="sourceLineNo">159</span> }<a name="line.159"></a>
+<span class="sourceLineNo">160</span><a name="line.160"></a>
+<span class="sourceLineNo">161</span> // returns true if we reach the size limit for batch, i.e, we need to finish the batch and return.<a name="line.161"></a>
+<span class="sourceLineNo">162</span> protected final boolean addEntryToBatch(WALEntryBatch batch, Entry entry) {<a name="line.162"></a>
+<span class="sourceLineNo">163</span> WALEdit edit = entry.getEdit();<a name="line.163"></a>
+<span class="sourceLineNo">164</span> if (edit == null || edit.isEmpty()) {<a name="line.164"></a>
+<span class="sourceLineNo">165</span> return false;<a name="line.165"></a>
+<span class="sourceLineNo">166</span> }<a name="line.166"></a>
+<span class="sourceLineNo">167</span> long entrySize = getEntrySize(entry);<a name="line.167"></a>
+<span class="sourceLineNo">168</span> batch.addEntry(entry);<a name="line.168"></a>
+<span class="sourceLineNo">169</span> updateBatchStats(batch, entry, entrySize);<a name="line.169"></a>
+<span class="sourceLineNo">170</span> boolean totalBufferTooLarge = acquireBufferQuota(entrySize);<a name="line.170"></a>
+<span class="sourceLineNo">171</span> // Stop if too many entries or too big<a name="line.171"></a>
+<span class="sourceLineNo">172</span> return totalBufferTooLarge || batch.getHeapSize() >= replicationBatchSizeCapacity ||<a name="line.172"></a>
+<span class="sourceLineNo">173</span> batch.getNbEntries() >= replicationBatchCountCapacity;<a name="line.173"></a>
+<span class="sourceLineNo">174</span> }<a name="line.174"></a>
+<span class="sourceLineNo">175</span><a name="line.175"></a>
+<span class="sourceLineNo">176</span> protected WALEntryBatch readWALEntries(WALEntryStream entryStream)<a name="line.176"></a>
+<span class="sourceLineNo">177</span> throws IOException, InterruptedException {<a name="line.177"></a>
+<span class="sourceLineNo">178</span> if (!entryStream.hasNext()) {<a name="line.178"></a>
+<span class="sourceLineNo">179</span> return null;<a name="line.179"></a>
+<span class="sourceLineNo">180</span> }<a name="line.180"></a>
+<span class="sourceLineNo">181</span> WALEntryBatch batch = createBatch(entryStream);<a name="line.181"></a>
+<span class="sourceLineNo">182</span> do {<a name="line.182"></a>
+<span class="sourceLineNo">183</span> Entry entry = entryStream.next();<a name="line.183"></a>
+<span class="sourceLineNo">184</span> batch.setLastWalPosition(entryStream.getPosition());<a name="line.184"></a>
+<span class="sourceLineNo">185</span> entry = filterEntry(entry);<a name="line.185"></a>
+<span class="sourceLineNo">186</span> if (entry != null) {<a name="line.186"></a>
+<span class="sourceLineNo">187</span> if (addEntryToBatch(batch, entry)) {<a name="line.187"></a>
+<span class="sourceLineNo">188</span> break;<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> } while (entryStream.hasNext());<a name="line.191"></a>
+<span class="sourceLineNo">192</span> return batch;<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> protected void handleEmptyWALEntryBatch(Path currentPath) throws InterruptedException {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> LOG.trace("Didn't read any new entries from WAL");<a name="line.196"></a>
+<span class="sourceLineNo">197</span> Thread.sleep(sleepForRetries);<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> // if we get an EOF due to a zero-length log, and there are other logs in queue<a name="line.200"></a>
+<span class="sourceLineNo">201</span> // (highly likely we've closed the current log), we've hit the max retries, and autorecovery is<a name="line.201"></a>
+<span class="sourceLineNo">202</span> // enabled, then dump the log<a name="line.202"></a>
+<span class="sourceLineNo">203</span> private void handleEofException(IOException e) {<a name="line.203"></a>
+<span class="sourceLineNo">204</span> if ((e instanceof EOFException || e.getCause() instanceof EOFException) &&<a name="line.204"></a>
+<span class="sourceLineNo">205</span> logQueue.size() > 1 && this.eofAutoRecovery) {<a name="line.205"></a>
+<span class="sourceLineNo">206</span> try {<a name="line.206"></a>
+<span class="sourceLineNo">207</span> if (fs.getFileStatus(logQueue.peek()).getLen() == 0) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span> LOG.warn("Forcing removal of 0 length log in queue: " + logQueue.peek());<a name="line.208"></a>
+<span class="sourceLineNo">209</span> logQueue.remove();<a name="line.209"></a>
+<span class="sourceLineNo">210</span> currentPosition = 0;<a name="line.210"></a>
+<span class="sourceLineNo">211</span> }<a name="line.211"></a>
+<span class="sourceLineNo">212</span> } catch (IOException ioe) {<a name="line.212"></a>
+<span class="sourceLineNo">213</span> LOG.warn("Couldn't get file length information about log " + logQueue.peek());<a name="line.213"></a>
+<span class="sourceLineNo">214</span> }<a name="line.214"></a>
+<span class="sourceLineNo">215</span> }<a name="line.215"></a>
+<span class="sourceLineNo">216</span> }<a name="line.216"></a>
+<span class="sourceLineNo">217</span><a name="line.217"></a>
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f1b07859/devapidocs/src-html/org/apache/hadoop/hbase/replication/regionserver/SerialReplicationSourceWALReader.html
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+<!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> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
+<span class="sourceLineNo">009</span> *<a name="line.9"></a>
+<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
+<span class="sourceLineNo">017</span> */<a name="line.17"></a>
+<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.replication.regionserver;<a name="line.18"></a>
+<span class="sourceLineNo">019</span><a name="line.19"></a>
+<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.util.concurrent.PriorityBlockingQueue;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import org.apache.hadoop.conf.Configuration;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import org.apache.hadoop.fs.FileSystem;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import org.apache.hadoop.fs.Path;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.Cell;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.replication.WALEntryFilter;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>/**<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * WAL reader for a serial replication peer.<a name="line.32"></a>
+<span class="sourceLineNo">033</span> */<a name="line.33"></a>
+<span class="sourceLineNo">034</span>@InterfaceAudience.Private<a name="line.34"></a>
+<span class="sourceLineNo">035</span>public class SerialReplicationSourceWALReader extends ReplicationSourceWALReader {<a name="line.35"></a>
+<span class="sourceLineNo">036</span><a name="line.36"></a>
+<span class="sourceLineNo">037</span> // used to store the first cell in an entry before filtering. This is because that if serial<a name="line.37"></a>
+<span class="sourceLineNo">038</span> // replication is enabled, we may find out that an entry can not be pushed after filtering. And<a name="line.38"></a>
+<span class="sourceLineNo">039</span> // when we try the next time, the cells maybe null since the entry has already been filtered,<a name="line.39"></a>
+<span class="sourceLineNo">040</span> // especially for region event wal entries. And this can also used to determine whether we can<a name="line.40"></a>
+<span class="sourceLineNo">041</span> // skip filtering.<a name="line.41"></a>
+<span class="sourceLineNo">042</span> private Cell firstCellInEntryBeforeFiltering;<a name="line.42"></a>
+<span class="sourceLineNo">043</span><a name="line.43"></a>
+<span class="sourceLineNo">044</span> private final SerialReplicationChecker checker;<a name="line.44"></a>
+<span class="sourceLineNo">045</span><a name="line.45"></a>
+<span class="sourceLineNo">046</span> public SerialReplicationSourceWALReader(FileSystem fs, Configuration conf,<a name="line.46"></a>
+<span class="sourceLineNo">047</span> PriorityBlockingQueue<Path> logQueue, long startPosition, WALEntryFilter filter,<a name="line.47"></a>
+<span class="sourceLineNo">048</span> ReplicationSource source) {<a name="line.48"></a>
+<span class="sourceLineNo">049</span> super(fs, conf, logQueue, startPosition, filter, source);<a name="line.49"></a>
+<span class="sourceLineNo">050</span> checker = new SerialReplicationChecker(conf, source);<a name="line.50"></a>
+<span class="sourceLineNo">051</span> }<a name="line.51"></a>
+<span class="sourceLineNo">052</span><a name="line.52"></a>
+<span class="sourceLineNo">053</span> @Override<a name="line.53"></a>
+<span class="sourceLineNo">054</span> protected WALEntryBatch readWALEntries(WALEntryStream entryStream)<a name="line.54"></a>
+<span class="sourceLineNo">055</span> throws IOException, InterruptedException {<a name="line.55"></a>
+<span class="sourceLineNo">056</span> if (!entryStream.hasNext()) {<a name="line.56"></a>
+<span class="sourceLineNo">057</span> return null;<a name="line.57"></a>
+<span class="sourceLineNo">058</span> }<a name="line.58"></a>
+<span class="sourceLineNo">059</span> long positionBefore = entryStream.getPosition();<a name="line.59"></a>
+<span class="sourceLineNo">060</span> WALEntryBatch batch = createBatch(entryStream);<a name="line.60"></a>
+<span class="sourceLineNo">061</span> do {<a name="line.61"></a>
+<span class="sourceLineNo">062</span> Entry entry = entryStream.peek();<a name="line.62"></a>
+<span class="sourceLineNo">063</span> boolean doFiltering = true;<a name="line.63"></a>
+<span class="sourceLineNo">064</span> if (firstCellInEntryBeforeFiltering == null) {<a name="line.64"></a>
+<span class="sourceLineNo">065</span> assert !entry.getEdit().isEmpty() : "should not write empty edits";<a name="line.65"></a>
+<span class="sourceLineNo">066</span> // Used to locate the region record in meta table. In WAL we only have the table name and<a name="line.66"></a>
+<span class="sourceLineNo">067</span> // encoded region name which can not be mapping to region name without scanning all the<a name="line.67"></a>
+<span class="sourceLineNo">068</span> // records for a table, so we need a start key, just like what we have done at client side<a name="line.68"></a>
+<span class="sourceLineNo">069</span> // when locating a region. For the markers, we will use the start key of the region as the<a name="line.69"></a>
+<span class="sourceLineNo">070</span> // row key for the edit. And we need to do this before filtering since all the cells may<a name="line.70"></a>
+<span class="sourceLineNo">071</span> // be filtered out, especially that for the markers.<a name="line.71"></a>
+<span class="sourceLineNo">072</span> firstCellInEntryBeforeFiltering = entry.getEdit().getCells().get(0);<a name="line.72"></a>
+<span class="sourceLineNo">073</span> } else {<a name="line.73"></a>
+<span class="sourceLineNo">074</span> // if this is not null then we know that the entry has already been filtered.<a name="line.74"></a>
+<span class="sourceLineNo">075</span> doFiltering = false;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> }<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> if (doFiltering) {<a name="line.78"></a>
+<span class="sourceLineNo">079</span> entry = filterEntry(entry);<a name="line.79"></a>
+<span class="sourceLineNo">080</span> }<a name="line.80"></a>
+<span class="sourceLineNo">081</span> if (entry != null) {<a name="line.81"></a>
+<span class="sourceLineNo">082</span> if (!checker.canPush(entry, firstCellInEntryBeforeFiltering)) {<a name="line.82"></a>
+<span class="sourceLineNo">083</span> if (batch.getLastWalPosition() > positionBefore) {<a name="line.83"></a>
+<span class="sourceLineNo">084</span> // we have something that can push, break<a name="line.84"></a>
+<span class="sourceLineNo">085</span> break;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> } else {<a name="line.86"></a>
+<span class="sourceLineNo">087</span> checker.waitUntilCanPush(entry, firstCellInEntryBeforeFiltering);<a name="line.87"></a>
+<span class="sourceLineNo">088</span> }<a name="line.88"></a>
+<span class="sourceLineNo">089</span> }<a name="line.89"></a>
+<span class="sourceLineNo">090</span> // arrive here means we can push the entry, record the last sequence id<a name="line.90"></a>
+<span class="sourceLineNo">091</span> batch.setLastSeqId(Bytes.toString(entry.getKey().getEncodedRegionName()),<a name="line.91"></a>
+<span class="sourceLineNo">092</span> entry.getKey().getSequenceId());<a name="line.92"></a>
+<span class="sourceLineNo">093</span> // actually remove the entry.<a name="line.93"></a>
+<span class="sourceLineNo">094</span> removeEntryFromStream(entryStream, batch);<a name="line.94"></a>
+<span class="sourceLineNo">095</span> if (addEntryToBatch(batch, entry)) {<a name="line.95"></a>
+<span class="sourceLineNo">096</span> break;<a name="line.96"></a>
+<span class="sourceLineNo">097</span> }<a name="line.97"></a>
+<span class="sourceLineNo">098</span> } else {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> // actually remove the entry.<a name="line.99"></a>
+<span class="sourceLineNo">100</span> removeEntryFromStream(entryStream, batch);<a name="line.100"></a>
+<span class="sourceLineNo">101</span> }<a name="line.101"></a>
+<span class="sourceLineNo">102</span> } while (entryStream.hasNext());<a name="line.102"></a>
+<span class="sourceLineNo">103</span> return batch;<a name="line.103"></a>
+<span class="sourceLineNo">104</span> }<a name="line.104"></a>
+<span class="sourceLineNo">105</span><a name="line.105"></a>
+<span class="sourceLineNo">106</span> private void removeEntryFromStream(WALEntryStream entryStream, WALEntryBatch batch)<a name="line.106"></a>
+<span class="sourceLineNo">107</span> throws IOException {<a name="line.107"></a>
+<span class="sourceLineNo">108</span> entryStream.next();<a name="line.108"></a>
+<span class="sourceLineNo">109</span> firstCellInEntryBeforeFiltering = null;<a name="line.109"></a>
+<span class="sourceLineNo">110</span> batch.setLastWalPosition(entryStream.getPosition());<a name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span>}<a name="line.112"></a>
+
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+</pre>
+</div>
+</body>
+</html>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f1b07859/export_control.html
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diff --git a/export_control.html b/export_control.html
index cf2dce7..f0bea8f 100644
--- a/export_control.html
+++ b/export_control.html
@@ -7,7 +7,7 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20180311" />
+ <meta name="Date-Revision-yyyymmdd" content="20180312" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache HBase –
Export Control
@@ -324,7 +324,7 @@ for more details.</p>
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
All rights reserved.
- <li id="publishDate" class="pull-right">Last Published: 2018-03-11</li>
+ <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li>
</p>
</div>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f1b07859/index.html
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diff --git a/index.html b/index.html
index 8aa3913..a22852e 100644
--- a/index.html
+++ b/index.html
@@ -7,7 +7,7 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20180311" />
+ <meta name="Date-Revision-yyyymmdd" content="20180312" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache HBase – Apache HBase™ Home</title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.5-HBASE.min.css" />
@@ -426,7 +426,7 @@ Apache HBase is an open-source, distributed, versioned, non-relational database
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
All rights reserved.
- <li id="publishDate" class="pull-right">Last Published: 2018-03-11</li>
+ <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li>
</p>
</div>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f1b07859/integration.html
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diff --git a/integration.html b/integration.html
index dea0511..fe23b08 100644
--- a/integration.html
+++ b/integration.html
@@ -7,7 +7,7 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20180311" />
+ <meta name="Date-Revision-yyyymmdd" content="20180312" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache HBase – CI Management</title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.5-HBASE.min.css" />
@@ -284,7 +284,7 @@
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
All rights reserved.
- <li id="publishDate" class="pull-right">Last Published: 2018-03-11</li>
+ <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li>
</p>
</div>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f1b07859/issue-tracking.html
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diff --git a/issue-tracking.html b/issue-tracking.html
index 568708d..2dc77ba 100644
--- a/issue-tracking.html
+++ b/issue-tracking.html
@@ -7,7 +7,7 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20180311" />
+ <meta name="Date-Revision-yyyymmdd" content="20180312" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache HBase – Issue Management</title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.5-HBASE.min.css" />
@@ -281,7 +281,7 @@
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
All rights reserved.
- <li id="publishDate" class="pull-right">Last Published: 2018-03-11</li>
+ <li id="publishDate" class="pull-right">Last Published: 2018-03-12</li>
</p>
</div>