You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2017/04/05 01:50:29 UTC
[15/24] hbase-site git commit: Published site at
910b68082c8f200f0ba6395a76b7ee1c8917e401.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f5caf0f9/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/WALInputFormat.WALKeyRecordReader.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/WALInputFormat.WALKeyRecordReader.html b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/WALInputFormat.WALKeyRecordReader.html
index 05e46b2..12db0bb 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/WALInputFormat.WALKeyRecordReader.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/mapreduce/WALInputFormat.WALKeyRecordReader.html
@@ -28,283 +28,328 @@
<span class="sourceLineNo">020</span>import java.io.DataInput;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.io.DataOutput;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.EOFException;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.ArrayList;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.Collections;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a>
-<span class="sourceLineNo">027</span><a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.commons.logging.Log;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.commons.logging.LogFactory;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FileStatus;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.FileSystem;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.fs.LocatedFileStatus;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.fs.Path;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.fs.RemoteIterator;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.regionserver.wal.WALEdit;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.wal.WAL;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.wal.WAL.Reader;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.wal.WALFactory;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.wal.WALKey;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.io.Writable;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.mapreduce.InputFormat;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.mapreduce.InputSplit;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.mapreduce.JobContext;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.mapreduce.RecordReader;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.mapreduce.TaskAttemptContext;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.util.StringUtils;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span>/**<a name="line.51"></a>
-<span class="sourceLineNo">052</span> * Simple {@link InputFormat} for {@link org.apache.hadoop.hbase.wal.WAL} files.<a name="line.52"></a>
-<span class="sourceLineNo">053</span> */<a name="line.53"></a>
-<span class="sourceLineNo">054</span>@InterfaceAudience.Public<a name="line.54"></a>
-<span class="sourceLineNo">055</span>public class WALInputFormat extends InputFormat<WALKey, WALEdit> {<a name="line.55"></a>
-<span class="sourceLineNo">056</span> private static final Log LOG = LogFactory.getLog(WALInputFormat.class);<a name="line.56"></a>
-<span class="sourceLineNo">057</span><a name="line.57"></a>
-<span class="sourceLineNo">058</span> public static final String START_TIME_KEY = "wal.start.time";<a name="line.58"></a>
-<span class="sourceLineNo">059</span> public static final String END_TIME_KEY = "wal.end.time";<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span> /**<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * {@link InputSplit} for {@link WAL} files. Each split represent<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * exactly one log file.<a name="line.63"></a>
-<span class="sourceLineNo">064</span> */<a name="line.64"></a>
-<span class="sourceLineNo">065</span> static class WALSplit extends InputSplit implements Writable {<a name="line.65"></a>
-<span class="sourceLineNo">066</span> private String logFileName;<a name="line.66"></a>
-<span class="sourceLineNo">067</span> private long fileSize;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> private long startTime;<a name="line.68"></a>
-<span class="sourceLineNo">069</span> private long endTime;<a name="line.69"></a>
-<span class="sourceLineNo">070</span><a name="line.70"></a>
-<span class="sourceLineNo">071</span> /** for serialization */<a name="line.71"></a>
-<span class="sourceLineNo">072</span> public WALSplit() {}<a name="line.72"></a>
-<span class="sourceLineNo">073</span><a name="line.73"></a>
-<span class="sourceLineNo">074</span> /**<a name="line.74"></a>
-<span class="sourceLineNo">075</span> * Represent an WALSplit, i.e. a single WAL file.<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * Start- and EndTime are managed by the split, so that WAL files can be<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * filtered before WALEdits are passed to the mapper(s).<a name="line.77"></a>
-<span class="sourceLineNo">078</span> * @param logFileName<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * @param fileSize<a name="line.79"></a>
-<span class="sourceLineNo">080</span> * @param startTime<a name="line.80"></a>
-<span class="sourceLineNo">081</span> * @param endTime<a name="line.81"></a>
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-<span class="sourceLineNo">083</span> public WALSplit(String logFileName, long fileSize, long startTime, long endTime) {<a name="line.83"></a>
-<span class="sourceLineNo">084</span> this.logFileName = logFileName;<a name="line.84"></a>
-<span class="sourceLineNo">085</span> this.fileSize = fileSize;<a name="line.85"></a>
-<span class="sourceLineNo">086</span> this.startTime = startTime;<a name="line.86"></a>
-<span class="sourceLineNo">087</span> this.endTime = endTime;<a name="line.87"></a>
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-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span> @Override<a name="line.90"></a>
-<span class="sourceLineNo">091</span> public long getLength() throws IOException, InterruptedException {<a name="line.91"></a>
-<span class="sourceLineNo">092</span> return fileSize;<a name="line.92"></a>
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-<span class="sourceLineNo">095</span> @Override<a name="line.95"></a>
-<span class="sourceLineNo">096</span> public String[] getLocations() throws IOException, InterruptedException {<a name="line.96"></a>
-<span class="sourceLineNo">097</span> // TODO: Find the data node with the most blocks for this WAL?<a name="line.97"></a>
-<span class="sourceLineNo">098</span> return new String[] {};<a name="line.98"></a>
-<span class="sourceLineNo">099</span> }<a name="line.99"></a>
-<span class="sourceLineNo">100</span><a name="line.100"></a>
-<span class="sourceLineNo">101</span> public String getLogFileName() {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> return logFileName;<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span><a name="line.104"></a>
-<span class="sourceLineNo">105</span> public long getStartTime() {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> return startTime;<a name="line.106"></a>
-<span class="sourceLineNo">107</span> }<a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span> public long getEndTime() {<a name="line.109"></a>
-<span class="sourceLineNo">110</span> return endTime;<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>
-<span class="sourceLineNo">113</span> @Override<a name="line.113"></a>
-<span class="sourceLineNo">114</span> public void readFields(DataInput in) throws IOException {<a name="line.114"></a>
-<span class="sourceLineNo">115</span> logFileName = in.readUTF();<a name="line.115"></a>
-<span class="sourceLineNo">116</span> fileSize = in.readLong();<a name="line.116"></a>
-<span class="sourceLineNo">117</span> startTime = in.readLong();<a name="line.117"></a>
-<span class="sourceLineNo">118</span> endTime = in.readLong();<a name="line.118"></a>
-<span class="sourceLineNo">119</span> }<a name="line.119"></a>
-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span> @Override<a name="line.121"></a>
-<span class="sourceLineNo">122</span> public void write(DataOutput out) throws IOException {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> out.writeUTF(logFileName);<a name="line.123"></a>
-<span class="sourceLineNo">124</span> out.writeLong(fileSize);<a name="line.124"></a>
-<span class="sourceLineNo">125</span> out.writeLong(startTime);<a name="line.125"></a>
-<span class="sourceLineNo">126</span> out.writeLong(endTime);<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 String toString() {<a name="line.130"></a>
-<span class="sourceLineNo">131</span> return logFileName + " (" + startTime + ":" + endTime + ") length:" + fileSize;<a name="line.131"></a>
-<span class="sourceLineNo">132</span> }<a name="line.132"></a>
-<span class="sourceLineNo">133</span> }<a name="line.133"></a>
-<span class="sourceLineNo">134</span><a name="line.134"></a>
-<span class="sourceLineNo">135</span> /**<a name="line.135"></a>
-<span class="sourceLineNo">136</span> * {@link RecordReader} for an {@link WAL} file.<a name="line.136"></a>
-<span class="sourceLineNo">137</span> * Implementation shared with deprecated HLogInputFormat.<a name="line.137"></a>
-<span class="sourceLineNo">138</span> */<a name="line.138"></a>
-<span class="sourceLineNo">139</span> static abstract class WALRecordReader<K extends WALKey> extends RecordReader<K, WALEdit> {<a name="line.139"></a>
-<span class="sourceLineNo">140</span> private Reader reader = null;<a name="line.140"></a>
-<span class="sourceLineNo">141</span> // visible until we can remove the deprecated HLogInputFormat<a name="line.141"></a>
-<span class="sourceLineNo">142</span> Entry currentEntry = new Entry();<a name="line.142"></a>
-<span class="sourceLineNo">143</span> private long startTime;<a name="line.143"></a>
-<span class="sourceLineNo">144</span> private long endTime;<a name="line.144"></a>
-<span class="sourceLineNo">145</span><a name="line.145"></a>
-<span class="sourceLineNo">146</span> @Override<a name="line.146"></a>
-<span class="sourceLineNo">147</span> public void initialize(InputSplit split, TaskAttemptContext context)<a name="line.147"></a>
-<span class="sourceLineNo">148</span> throws IOException, InterruptedException {<a name="line.148"></a>
-<span class="sourceLineNo">149</span> WALSplit hsplit = (WALSplit)split;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> Path logFile = new Path(hsplit.getLogFileName());<a name="line.150"></a>
-<span class="sourceLineNo">151</span> Configuration conf = context.getConfiguration();<a name="line.151"></a>
-<span class="sourceLineNo">152</span> LOG.info("Opening reader for "+split);<a name="line.152"></a>
-<span class="sourceLineNo">153</span> try {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> this.reader = WALFactory.createReader(logFile.getFileSystem(conf), logFile, conf);<a name="line.154"></a>
-<span class="sourceLineNo">155</span> } catch (EOFException x) {<a name="line.155"></a>
-<span class="sourceLineNo">156</span> LOG.info("Ignoring corrupted WAL file: " + logFile<a name="line.156"></a>
-<span class="sourceLineNo">157</span> + " (This is normal when a RegionServer crashed.)");<a name="line.157"></a>
-<span class="sourceLineNo">158</span> this.reader = null;<a name="line.158"></a>
-<span class="sourceLineNo">159</span> }<a name="line.159"></a>
-<span class="sourceLineNo">160</span> this.startTime = hsplit.getStartTime();<a name="line.160"></a>
-<span class="sourceLineNo">161</span> this.endTime = hsplit.getEndTime();<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> @Override<a name="line.164"></a>
-<span class="sourceLineNo">165</span> public boolean nextKeyValue() throws IOException, InterruptedException {<a name="line.165"></a>
-<span class="sourceLineNo">166</span> if (reader == null) return false;<a name="line.166"></a>
-<span class="sourceLineNo">167</span><a name="line.167"></a>
-<span class="sourceLineNo">168</span> Entry temp;<a name="line.168"></a>
-<span class="sourceLineNo">169</span> long i = -1;<a name="line.169"></a>
-<span class="sourceLineNo">170</span> do {<a name="line.170"></a>
-<span class="sourceLineNo">171</span> // skip older entries<a name="line.171"></a>
-<span class="sourceLineNo">172</span> try {<a name="line.172"></a>
-<span class="sourceLineNo">173</span> temp = reader.next(currentEntry);<a name="line.173"></a>
-<span class="sourceLineNo">174</span> i++;<a name="line.174"></a>
-<span class="sourceLineNo">175</span> } catch (EOFException x) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> LOG.warn("Corrupted entry detected. Ignoring the rest of the file."<a name="line.176"></a>
-<span class="sourceLineNo">177</span> + " (This is normal when a RegionServer crashed.)");<a name="line.177"></a>
-<span class="sourceLineNo">178</span> return false;<a name="line.178"></a>
-<span class="sourceLineNo">179</span> }<a name="line.179"></a>
-<span class="sourceLineNo">180</span> }<a name="line.180"></a>
-<span class="sourceLineNo">181</span> while(temp != null && temp.getKey().getWriteTime() < startTime);<a name="line.181"></a>
-<span class="sourceLineNo">182</span><a name="line.182"></a>
-<span class="sourceLineNo">183</span> if (temp == null) {<a name="line.183"></a>
-<span class="sourceLineNo">184</span> if (i > 0) LOG.info("Skipped " + i + " entries.");<a name="line.184"></a>
-<span class="sourceLineNo">185</span> LOG.info("Reached end of file.");<a name="line.185"></a>
-<span class="sourceLineNo">186</span> return false;<a name="line.186"></a>
-<span class="sourceLineNo">187</span> } else if (i > 0) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> LOG.info("Skipped " + i + " entries, until ts: " + temp.getKey().getWriteTime() + ".");<a name="line.188"></a>
-<span class="sourceLineNo">189</span> }<a name="line.189"></a>
-<span class="sourceLineNo">190</span> boolean res = temp.getKey().getWriteTime() <= endTime;<a name="line.190"></a>
-<span class="sourceLineNo">191</span> if (!res) {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> LOG.info("Reached ts: " + temp.getKey().getWriteTime() + " ignoring the rest of the file.");<a name="line.192"></a>
-<span class="sourceLineNo">193</span> }<a name="line.193"></a>
-<span class="sourceLineNo">194</span> return res;<a name="line.194"></a>
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-<span class="sourceLineNo">196</span><a name="line.196"></a>
-<span class="sourceLineNo">197</span> @Override<a name="line.197"></a>
-<span class="sourceLineNo">198</span> public WALEdit getCurrentValue() throws IOException, InterruptedException {<a name="line.198"></a>
-<span class="sourceLineNo">199</span> return currentEntry.getEdit();<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> @Override<a name="line.202"></a>
-<span class="sourceLineNo">203</span> public float getProgress() throws IOException, InterruptedException {<a name="line.203"></a>
-<span class="sourceLineNo">204</span> // N/A depends on total number of entries, which is unknown<a name="line.204"></a>
-<span class="sourceLineNo">205</span> return 0;<a name="line.205"></a>
-<span class="sourceLineNo">206</span> }<a name="line.206"></a>
-<span class="sourceLineNo">207</span><a name="line.207"></a>
-<span class="sourceLineNo">208</span> @Override<a name="line.208"></a>
-<span class="sourceLineNo">209</span> public void close() throws IOException {<a name="line.209"></a>
-<span class="sourceLineNo">210</span> LOG.info("Closing reader");<a name="line.210"></a>
-<span class="sourceLineNo">211</span> if (reader != null) this.reader.close();<a name="line.211"></a>
-<span class="sourceLineNo">212</span> }<a name="line.212"></a>
-<span class="sourceLineNo">213</span> }<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> * handler for non-deprecated WALKey version. fold into WALRecordReader once we no longer<a name="line.216"></a>
-<span class="sourceLineNo">217</span> * need to support HLogInputFormat.<a name="line.217"></a>
-<span class="sourceLineNo">218</span> */<a name="line.218"></a>
-<span class="sourceLineNo">219</span> static class WALKeyRecordReader extends WALRecordReader<WALKey> {<a name="line.219"></a>
-<span class="sourceLineNo">220</span> @Override<a name="line.220"></a>
-<span class="sourceLineNo">221</span> public WALKey getCurrentKey() throws IOException, InterruptedException {<a name="line.221"></a>
-<span class="sourceLineNo">222</span> return currentEntry.getKey();<a name="line.222"></a>
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-<span class="sourceLineNo">225</span><a name="line.225"></a>
-<span class="sourceLineNo">226</span> @Override<a name="line.226"></a>
-<span class="sourceLineNo">227</span> public List<InputSplit> getSplits(JobContext context) throws IOException,<a name="line.227"></a>
-<span class="sourceLineNo">228</span> InterruptedException {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> return getSplits(context, START_TIME_KEY, END_TIME_KEY);<a name="line.229"></a>
-<span class="sourceLineNo">230</span> }<a name="line.230"></a>
+<span class="sourceLineNo">023</span>import java.io.FileNotFoundException;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.ArrayList;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.Collections;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
+<span class="sourceLineNo">028</span><a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.commons.logging.Log;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.commons.logging.LogFactory;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.conf.Configuration;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.FileStatus;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.fs.FileSystem;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.fs.LocatedFileStatus;<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.fs.RemoteIterator;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.regionserver.wal.WALEdit;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.wal.WAL;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.wal.WAL.Entry;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.wal.WAL.Reader;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.wal.WALKey;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.io.Writable;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.mapreduce.InputFormat;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.mapreduce.InputSplit;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.mapreduce.JobContext;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.mapreduce.RecordReader;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.mapreduce.TaskAttemptContext;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.util.StringUtils;<a name="line.51"></a>
+<span class="sourceLineNo">052</span><a name="line.52"></a>
+<span class="sourceLineNo">053</span>/**<a name="line.53"></a>
+<span class="sourceLineNo">054</span> * Simple {@link InputFormat} for {@link org.apache.hadoop.hbase.wal.WAL} files.<a name="line.54"></a>
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+<span class="sourceLineNo">056</span>@InterfaceAudience.Public<a name="line.56"></a>
+<span class="sourceLineNo">057</span>public class WALInputFormat extends InputFormat<WALKey, WALEdit> {<a name="line.57"></a>
+<span class="sourceLineNo">058</span> private static final Log LOG = LogFactory.getLog(WALInputFormat.class);<a name="line.58"></a>
+<span class="sourceLineNo">059</span><a name="line.59"></a>
+<span class="sourceLineNo">060</span> public static final String START_TIME_KEY = "wal.start.time";<a name="line.60"></a>
+<span class="sourceLineNo">061</span> public static final String END_TIME_KEY = "wal.end.time";<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span> /**<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * {@link InputSplit} for {@link WAL} files. Each split represent<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * exactly one log file.<a name="line.65"></a>
+<span class="sourceLineNo">066</span> */<a name="line.66"></a>
+<span class="sourceLineNo">067</span> static class WALSplit extends InputSplit implements Writable {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> private String logFileName;<a name="line.68"></a>
+<span class="sourceLineNo">069</span> private long fileSize;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> private long startTime;<a name="line.70"></a>
+<span class="sourceLineNo">071</span> private long endTime;<a name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span> /** for serialization */<a name="line.73"></a>
+<span class="sourceLineNo">074</span> public WALSplit() {}<a name="line.74"></a>
+<span class="sourceLineNo">075</span><a name="line.75"></a>
+<span class="sourceLineNo">076</span> /**<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * Represent an WALSplit, i.e. a single WAL file.<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * Start- and EndTime are managed by the split, so that WAL files can be<a name="line.78"></a>
+<span class="sourceLineNo">079</span> * filtered before WALEdits are passed to the mapper(s).<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * @param logFileName<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * @param fileSize<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * @param startTime<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * @param endTime<a name="line.83"></a>
+<span class="sourceLineNo">084</span> */<a name="line.84"></a>
+<span class="sourceLineNo">085</span> public WALSplit(String logFileName, long fileSize, long startTime, long endTime) {<a name="line.85"></a>
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+<span class="sourceLineNo">087</span> this.fileSize = fileSize;<a name="line.87"></a>
+<span class="sourceLineNo">088</span> this.startTime = startTime;<a name="line.88"></a>
+<span class="sourceLineNo">089</span> this.endTime = endTime;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> @Override<a name="line.92"></a>
+<span class="sourceLineNo">093</span> public long getLength() throws IOException, InterruptedException {<a name="line.93"></a>
+<span class="sourceLineNo">094</span> return fileSize;<a name="line.94"></a>
+<span class="sourceLineNo">095</span> }<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
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+<span class="sourceLineNo">098</span> public String[] getLocations() throws IOException, InterruptedException {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> // TODO: Find the data node with the most blocks for this WAL?<a name="line.99"></a>
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+<span class="sourceLineNo">101</span> }<a name="line.101"></a>
+<span class="sourceLineNo">102</span><a name="line.102"></a>
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+<span class="sourceLineNo">105</span> }<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
+<span class="sourceLineNo">107</span> public long getStartTime() {<a name="line.107"></a>
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+<span class="sourceLineNo">109</span> }<a name="line.109"></a>
+<span class="sourceLineNo">110</span><a name="line.110"></a>
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+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span> @Override<a name="line.115"></a>
+<span class="sourceLineNo">116</span> public void readFields(DataInput in) throws IOException {<a name="line.116"></a>
+<span class="sourceLineNo">117</span> logFileName = in.readUTF();<a name="line.117"></a>
+<span class="sourceLineNo">118</span> fileSize = in.readLong();<a name="line.118"></a>
+<span class="sourceLineNo">119</span> startTime = in.readLong();<a name="line.119"></a>
+<span class="sourceLineNo">120</span> endTime = in.readLong();<a name="line.120"></a>
+<span class="sourceLineNo">121</span> }<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> @Override<a name="line.123"></a>
+<span class="sourceLineNo">124</span> public void write(DataOutput out) throws IOException {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> out.writeUTF(logFileName);<a name="line.125"></a>
+<span class="sourceLineNo">126</span> out.writeLong(fileSize);<a name="line.126"></a>
+<span class="sourceLineNo">127</span> out.writeLong(startTime);<a name="line.127"></a>
+<span class="sourceLineNo">128</span> out.writeLong(endTime);<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 String toString() {<a name="line.132"></a>
+<span class="sourceLineNo">133</span> return logFileName + " (" + startTime + ":" + endTime + ") length:" + fileSize;<a name="line.133"></a>
+<span class="sourceLineNo">134</span> }<a name="line.134"></a>
+<span class="sourceLineNo">135</span> }<a name="line.135"></a>
+<span class="sourceLineNo">136</span><a name="line.136"></a>
+<span class="sourceLineNo">137</span> /**<a name="line.137"></a>
+<span class="sourceLineNo">138</span> * {@link RecordReader} for an {@link WAL} file.<a name="line.138"></a>
+<span class="sourceLineNo">139</span> * Implementation shared with deprecated HLogInputFormat.<a name="line.139"></a>
+<span class="sourceLineNo">140</span> */<a name="line.140"></a>
+<span class="sourceLineNo">141</span> static abstract class WALRecordReader<K extends WALKey> extends RecordReader<K, WALEdit> {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> private Reader reader = null;<a name="line.142"></a>
+<span class="sourceLineNo">143</span> // visible until we can remove the deprecated HLogInputFormat<a name="line.143"></a>
+<span class="sourceLineNo">144</span> Entry currentEntry = new Entry();<a name="line.144"></a>
+<span class="sourceLineNo">145</span> private long startTime;<a name="line.145"></a>
+<span class="sourceLineNo">146</span> private long endTime;<a name="line.146"></a>
+<span class="sourceLineNo">147</span> private Configuration conf;<a name="line.147"></a>
+<span class="sourceLineNo">148</span> private Path logFile;<a name="line.148"></a>
+<span class="sourceLineNo">149</span> private long currentPos;<a name="line.149"></a>
+<span class="sourceLineNo">150</span><a name="line.150"></a>
+<span class="sourceLineNo">151</span> @Override<a name="line.151"></a>
+<span class="sourceLineNo">152</span> public void initialize(InputSplit split, TaskAttemptContext context)<a name="line.152"></a>
+<span class="sourceLineNo">153</span> throws IOException, InterruptedException {<a name="line.153"></a>
+<span class="sourceLineNo">154</span> WALSplit hsplit = (WALSplit)split;<a name="line.154"></a>
+<span class="sourceLineNo">155</span> logFile = new Path(hsplit.getLogFileName());<a name="line.155"></a>
+<span class="sourceLineNo">156</span> conf = context.getConfiguration();<a name="line.156"></a>
+<span class="sourceLineNo">157</span> LOG.info("Opening reader for "+split);<a name="line.157"></a>
+<span class="sourceLineNo">158</span> openReader(logFile);<a name="line.158"></a>
+<span class="sourceLineNo">159</span> this.startTime = hsplit.getStartTime();<a name="line.159"></a>
+<span class="sourceLineNo">160</span> this.endTime = hsplit.getEndTime();<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> private void openReader(Path path) throws IOException<a name="line.163"></a>
+<span class="sourceLineNo">164</span> {<a name="line.164"></a>
+<span class="sourceLineNo">165</span> closeReader();<a name="line.165"></a>
+<span class="sourceLineNo">166</span> reader = AbstractFSWALProvider.openReader(path, conf);<a name="line.166"></a>
+<span class="sourceLineNo">167</span> seek();<a name="line.167"></a>
+<span class="sourceLineNo">168</span> setCurrentPath(path);<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> private void setCurrentPath(Path path) {<a name="line.171"></a>
+<span class="sourceLineNo">172</span> this.logFile = path;<a name="line.172"></a>
+<span class="sourceLineNo">173</span> }<a name="line.173"></a>
+<span class="sourceLineNo">174</span><a name="line.174"></a>
+<span class="sourceLineNo">175</span> private void closeReader() throws IOException {<a name="line.175"></a>
+<span class="sourceLineNo">176</span> if (reader != null) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> reader.close();<a name="line.177"></a>
+<span class="sourceLineNo">178</span> reader = null;<a name="line.178"></a>
+<span class="sourceLineNo">179</span> }<a name="line.179"></a>
+<span class="sourceLineNo">180</span> }<a name="line.180"></a>
+<span class="sourceLineNo">181</span><a name="line.181"></a>
+<span class="sourceLineNo">182</span> private void seek() throws IOException {<a name="line.182"></a>
+<span class="sourceLineNo">183</span> if (currentPos != 0) {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> reader.seek(currentPos);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> }<a name="line.185"></a>
+<span class="sourceLineNo">186</span> }<a name="line.186"></a>
+<span class="sourceLineNo">187</span><a name="line.187"></a>
+<span class="sourceLineNo">188</span> @Override<a name="line.188"></a>
+<span class="sourceLineNo">189</span> public boolean nextKeyValue() throws IOException, InterruptedException {<a name="line.189"></a>
+<span class="sourceLineNo">190</span> if (reader == null) return false;<a name="line.190"></a>
+<span class="sourceLineNo">191</span> this.currentPos = reader.getPosition();<a name="line.191"></a>
+<span class="sourceLineNo">192</span> Entry temp;<a name="line.192"></a>
+<span class="sourceLineNo">193</span> long i = -1;<a name="line.193"></a>
+<span class="sourceLineNo">194</span> try {<a name="line.194"></a>
+<span class="sourceLineNo">195</span> do {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> // skip older entries<a name="line.196"></a>
+<span class="sourceLineNo">197</span> try {<a name="line.197"></a>
+<span class="sourceLineNo">198</span> temp = reader.next(currentEntry);<a name="line.198"></a>
+<span class="sourceLineNo">199</span> i++;<a name="line.199"></a>
+<span class="sourceLineNo">200</span> } catch (EOFException x) {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> LOG.warn("Corrupted entry detected. Ignoring the rest of the file."<a name="line.201"></a>
+<span class="sourceLineNo">202</span> + " (This is normal when a RegionServer crashed.)");<a name="line.202"></a>
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+<span class="sourceLineNo">206</span><a name="line.206"></a>
+<span class="sourceLineNo">207</span> if (temp == null) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span> if (i > 0) LOG.info("Skipped " + i + " entries.");<a name="line.208"></a>
+<span class="sourceLineNo">209</span> LOG.info("Reached end of file.");<a name="line.209"></a>
+<span class="sourceLineNo">210</span> return false;<a name="line.210"></a>
+<span class="sourceLineNo">211</span> } else if (i > 0) {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> LOG.info("Skipped " + i + " entries, until ts: " + temp.getKey().getWriteTime() + ".");<a name="line.212"></a>
+<span class="sourceLineNo">213</span> }<a name="line.213"></a>
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+<span class="sourceLineNo">215</span> if (!res) {<a name="line.215"></a>
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+<span class="sourceLineNo">218</span> }<a name="line.218"></a>
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+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
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-<span class="sourceLineNo">244</span> FileSystem fs = inputPath.getFileSystem(conf);<a name="line.244"></a>
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-<span class="sourceLineNo">246</span> allFiles.addAll(files);<a name="line.246"></a>
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+<span class="sourceLineNo">234</span> return currentEntry.getEdit();<a name="line.234"></a>
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+<span class="sourceLineNo">237</span> @Override<a name="line.237"></a>
+<span class="sourceLineNo">238</span> public float getProgress() throws IOException, InterruptedException {<a name="line.238"></a>
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+<span class="sourceLineNo">245</span> LOG.info("Closing reader");<a name="line.245"></a>
+<span class="sourceLineNo">246</span> if (reader != null) this.reader.close();<a name="line.246"></a>
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+<span class="sourceLineNo">249</span><a name="line.249"></a>
+<span class="sourceLineNo">250</span> /**<a name="line.250"></a>
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-<span class="sourceLineNo">299</span>}<a name="line.299"></a>
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+<span class="sourceLineNo">304</span><a name="line.304"></a>
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+<span class="sourceLineNo">324</span> LOG.info("Found: " + file);<a name="line.324"></a>
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