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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/11/28 14:52:51 UTC
[09/25] hbase-site git commit: Published site at
d6e1d18be901bd969be976ad8d20359e876e6cd0.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/cc1090d4/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvDecoder.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvDecoder.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvDecoder.html
index 9df0225..1f73637 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvDecoder.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvDecoder.html
@@ -32,384 +32,383 @@
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.conf.Configuration;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.Cell;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.codec.BaseDecoder;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.codec.BaseEncoder;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.codec.Codec;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.codec.KeyValueCodecWithTags;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.io.ByteBuffInputStream;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.io.ByteBufferWriter;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.io.ByteBufferWriterOutputStream;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.io.util.Dictionary;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.io.util.StreamUtils;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.ReflectionUtils;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.io.IOUtils;<a name="line.46"></a>
-<span class="sourceLineNo">047</span><a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hbase.thirdparty.com.google.protobuf.ByteString;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations;<a name="line.49"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.PrivateCellUtil;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.codec.BaseDecoder;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.codec.BaseEncoder;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.codec.Codec;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.codec.KeyValueCodecWithTags;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.io.ByteBuffInputStream;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.io.ByteBufferWriter;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.io.ByteBufferWriterOutputStream;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.io.util.Dictionary;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.io.util.StreamUtils;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.util.ByteBufferUtils;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.util.ReflectionUtils;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.io.IOUtils;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hbase.thirdparty.com.google.protobuf.ByteString;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations;<a name="line.48"></a>
+<span class="sourceLineNo">049</span><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>/**<a name="line.52"></a>
-<span class="sourceLineNo">053</span> * Compression in this class is lifted off Compressor/KeyValueCompression.<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * This is a pure coincidence... they are independent and don't have to be compatible.<a name="line.54"></a>
-<span class="sourceLineNo">055</span> *<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * This codec is used at server side for writing cells to WAL as well as for sending edits<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * as part of the distributed splitting process.<a name="line.57"></a>
-<span class="sourceLineNo">058</span> */<a name="line.58"></a>
-<span class="sourceLineNo">059</span>@InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC,<a name="line.59"></a>
-<span class="sourceLineNo">060</span> HBaseInterfaceAudience.PHOENIX, HBaseInterfaceAudience.CONFIG})<a name="line.60"></a>
-<span class="sourceLineNo">061</span>public class WALCellCodec implements Codec {<a name="line.61"></a>
-<span class="sourceLineNo">062</span> /** Configuration key for the class to use when encoding cells in the WAL */<a name="line.62"></a>
-<span class="sourceLineNo">063</span> public static final String WAL_CELL_CODEC_CLASS_KEY = "hbase.regionserver.wal.codec";<a name="line.63"></a>
-<span class="sourceLineNo">064</span><a name="line.64"></a>
-<span class="sourceLineNo">065</span> protected final CompressionContext compression;<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span> /**<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * <b>All subclasses must implement a no argument constructor</b><a name="line.68"></a>
-<span class="sourceLineNo">069</span> */<a name="line.69"></a>
-<span class="sourceLineNo">070</span> public WALCellCodec() {<a name="line.70"></a>
-<span class="sourceLineNo">071</span> this.compression = null;<a name="line.71"></a>
-<span class="sourceLineNo">072</span> }<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> * Default constructor - <b>all subclasses must implement a constructor with this signature </b><a name="line.75"></a>
-<span class="sourceLineNo">076</span> * if they are to be dynamically loaded from the {@link Configuration}.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * @param conf configuration to configure <tt>this</tt><a name="line.77"></a>
-<span class="sourceLineNo">078</span> * @param compression compression the codec should support, can be <tt>null</tt> to indicate no<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * compression<a name="line.79"></a>
-<span class="sourceLineNo">080</span> */<a name="line.80"></a>
-<span class="sourceLineNo">081</span> public WALCellCodec(Configuration conf, CompressionContext compression) {<a name="line.81"></a>
-<span class="sourceLineNo">082</span> this.compression = compression;<a name="line.82"></a>
-<span class="sourceLineNo">083</span> }<a name="line.83"></a>
-<span class="sourceLineNo">084</span><a name="line.84"></a>
-<span class="sourceLineNo">085</span> public static String getWALCellCodecClass(Configuration conf) {<a name="line.85"></a>
-<span class="sourceLineNo">086</span> return conf.get(WAL_CELL_CODEC_CLASS_KEY, WALCellCodec.class.getName());<a name="line.86"></a>
-<span class="sourceLineNo">087</span> }<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> * Create and setup a {@link WALCellCodec} from the {@code cellCodecClsName} and<a name="line.90"></a>
-<span class="sourceLineNo">091</span> * CompressionContext, if {@code cellCodecClsName} is specified.<a name="line.91"></a>
-<span class="sourceLineNo">092</span> * Otherwise Cell Codec classname is read from {@link Configuration}.<a name="line.92"></a>
-<span class="sourceLineNo">093</span> * Fully prepares the codec for use.<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * @param conf {@link Configuration} to read for the user-specified codec. If none is specified,<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * uses a {@link WALCellCodec}.<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param cellCodecClsName name of codec<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * @param compression compression the codec should use<a name="line.97"></a>
-<span class="sourceLineNo">098</span> * @return a {@link WALCellCodec} ready for use.<a name="line.98"></a>
-<span class="sourceLineNo">099</span> * @throws UnsupportedOperationException if the codec cannot be instantiated<a name="line.99"></a>
-<span class="sourceLineNo">100</span> */<a name="line.100"></a>
-<span class="sourceLineNo">101</span><a name="line.101"></a>
-<span class="sourceLineNo">102</span> public static WALCellCodec create(Configuration conf, String cellCodecClsName,<a name="line.102"></a>
-<span class="sourceLineNo">103</span> CompressionContext compression) throws UnsupportedOperationException {<a name="line.103"></a>
-<span class="sourceLineNo">104</span> if (cellCodecClsName == null) {<a name="line.104"></a>
-<span class="sourceLineNo">105</span> cellCodecClsName = getWALCellCodecClass(conf);<a name="line.105"></a>
-<span class="sourceLineNo">106</span> }<a name="line.106"></a>
-<span class="sourceLineNo">107</span> return ReflectionUtils.instantiateWithCustomCtor(cellCodecClsName, new Class[]<a name="line.107"></a>
-<span class="sourceLineNo">108</span> { Configuration.class, CompressionContext.class }, new Object[] { conf, compression });<a name="line.108"></a>
-<span class="sourceLineNo">109</span> }<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> /**<a name="line.111"></a>
-<span class="sourceLineNo">112</span> * Create and setup a {@link WALCellCodec} from the<a name="line.112"></a>
-<span class="sourceLineNo">113</span> * CompressionContext.<a name="line.113"></a>
-<span class="sourceLineNo">114</span> * Cell Codec classname is read from {@link Configuration}.<a name="line.114"></a>
-<span class="sourceLineNo">115</span> * Fully prepares the codec for use.<a name="line.115"></a>
-<span class="sourceLineNo">116</span> * @param conf {@link Configuration} to read for the user-specified codec. If none is specified,<a name="line.116"></a>
-<span class="sourceLineNo">117</span> * uses a {@link WALCellCodec}.<a name="line.117"></a>
-<span class="sourceLineNo">118</span> * @param compression compression the codec should use<a name="line.118"></a>
-<span class="sourceLineNo">119</span> * @return a {@link WALCellCodec} ready for use.<a name="line.119"></a>
-<span class="sourceLineNo">120</span> * @throws UnsupportedOperationException if the codec cannot be instantiated<a name="line.120"></a>
-<span class="sourceLineNo">121</span> */<a name="line.121"></a>
-<span class="sourceLineNo">122</span> public static WALCellCodec create(Configuration conf,<a name="line.122"></a>
-<span class="sourceLineNo">123</span> CompressionContext compression) throws UnsupportedOperationException {<a name="line.123"></a>
-<span class="sourceLineNo">124</span> String cellCodecClsName = getWALCellCodecClass(conf);<a name="line.124"></a>
-<span class="sourceLineNo">125</span> return ReflectionUtils.instantiateWithCustomCtor(cellCodecClsName, new Class[]<a name="line.125"></a>
-<span class="sourceLineNo">126</span> { Configuration.class, CompressionContext.class }, new Object[] { conf, compression });<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> public interface ByteStringCompressor {<a name="line.129"></a>
-<span class="sourceLineNo">130</span> ByteString compress(byte[] data, Enum dictIndex) throws IOException;<a name="line.130"></a>
-<span class="sourceLineNo">131</span> }<a name="line.131"></a>
-<span class="sourceLineNo">132</span><a name="line.132"></a>
-<span class="sourceLineNo">133</span> public interface ByteStringUncompressor {<a name="line.133"></a>
-<span class="sourceLineNo">134</span> byte[] uncompress(ByteString data, Enum dictIndex) throws IOException;<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> static class StatelessUncompressor implements ByteStringUncompressor {<a name="line.137"></a>
-<span class="sourceLineNo">138</span> CompressionContext compressionContext;<a name="line.138"></a>
-<span class="sourceLineNo">139</span><a name="line.139"></a>
-<span class="sourceLineNo">140</span> public StatelessUncompressor(CompressionContext compressionContext) {<a name="line.140"></a>
-<span class="sourceLineNo">141</span> this.compressionContext = compressionContext;<a name="line.141"></a>
-<span class="sourceLineNo">142</span> }<a name="line.142"></a>
-<span class="sourceLineNo">143</span><a name="line.143"></a>
-<span class="sourceLineNo">144</span> @Override<a name="line.144"></a>
-<span class="sourceLineNo">145</span> public byte[] uncompress(ByteString data, Enum dictIndex) throws IOException {<a name="line.145"></a>
-<span class="sourceLineNo">146</span> return WALCellCodec.uncompressByteString(data, compressionContext.getDictionary(dictIndex));<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span> }<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
-<span class="sourceLineNo">150</span> static class BaosAndCompressor extends ByteArrayOutputStream implements ByteStringCompressor {<a name="line.150"></a>
-<span class="sourceLineNo">151</span> private CompressionContext compressionContext;<a name="line.151"></a>
-<span class="sourceLineNo">152</span><a name="line.152"></a>
-<span class="sourceLineNo">153</span> public BaosAndCompressor(CompressionContext compressionContext) {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> this.compressionContext = compressionContext;<a name="line.154"></a>
-<span class="sourceLineNo">155</span> }<a name="line.155"></a>
-<span class="sourceLineNo">156</span> public ByteString toByteString() {<a name="line.156"></a>
-<span class="sourceLineNo">157</span> // We need this copy to create the ByteString as the byte[] 'buf' is not immutable. We reuse<a name="line.157"></a>
-<span class="sourceLineNo">158</span> // them.<a name="line.158"></a>
-<span class="sourceLineNo">159</span> return ByteString.copyFrom(this.buf, 0, this.count);<a name="line.159"></a>
-<span class="sourceLineNo">160</span> }<a name="line.160"></a>
-<span class="sourceLineNo">161</span><a name="line.161"></a>
-<span class="sourceLineNo">162</span> @Override<a name="line.162"></a>
-<span class="sourceLineNo">163</span> public ByteString compress(byte[] data, Enum dictIndex) throws IOException {<a name="line.163"></a>
-<span class="sourceLineNo">164</span> writeCompressed(data, dictIndex);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> // We need this copy to create the ByteString as the byte[] 'buf' is not immutable. We reuse<a name="line.165"></a>
-<span class="sourceLineNo">166</span> // them.<a name="line.166"></a>
-<span class="sourceLineNo">167</span> ByteString result = ByteString.copyFrom(this.buf, 0, this.count);<a name="line.167"></a>
-<span class="sourceLineNo">168</span> reset(); // Only resets the count - we reuse the byte array.<a name="line.168"></a>
-<span class="sourceLineNo">169</span> return result;<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 writeCompressed(byte[] data, Enum dictIndex) throws IOException {<a name="line.172"></a>
-<span class="sourceLineNo">173</span> Dictionary dict = compressionContext.getDictionary(dictIndex);<a name="line.173"></a>
-<span class="sourceLineNo">174</span> assert dict != null;<a name="line.174"></a>
-<span class="sourceLineNo">175</span> short dictIdx = dict.findEntry(data, 0, data.length);<a name="line.175"></a>
-<span class="sourceLineNo">176</span> if (dictIdx == Dictionary.NOT_IN_DICTIONARY) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> write(Dictionary.NOT_IN_DICTIONARY);<a name="line.177"></a>
-<span class="sourceLineNo">178</span> StreamUtils.writeRawVInt32(this, data.length);<a name="line.178"></a>
-<span class="sourceLineNo">179</span> write(data, 0, data.length);<a name="line.179"></a>
-<span class="sourceLineNo">180</span> } else {<a name="line.180"></a>
-<span class="sourceLineNo">181</span> StreamUtils.writeShort(this, dictIdx);<a name="line.181"></a>
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-<span class="sourceLineNo">183</span> }<a name="line.183"></a>
-<span class="sourceLineNo">184</span> }<a name="line.184"></a>
-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> static class NoneCompressor implements ByteStringCompressor {<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 ByteString compress(byte[] data, Enum dictIndex) {<a name="line.189"></a>
-<span class="sourceLineNo">190</span> return UnsafeByteOperations.unsafeWrap(data);<a name="line.190"></a>
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-<span class="sourceLineNo">192</span> }<a name="line.192"></a>
-<span class="sourceLineNo">193</span><a name="line.193"></a>
-<span class="sourceLineNo">194</span> static class NoneUncompressor implements ByteStringUncompressor {<a name="line.194"></a>
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-<span class="sourceLineNo">196</span> @Override<a name="line.196"></a>
-<span class="sourceLineNo">197</span> public byte[] uncompress(ByteString data, Enum dictIndex) {<a name="line.197"></a>
-<span class="sourceLineNo">198</span> return data.toByteArray();<a name="line.198"></a>
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-<span class="sourceLineNo">202</span> private static byte[] uncompressByteString(ByteString bs, Dictionary dict) throws IOException {<a name="line.202"></a>
-<span class="sourceLineNo">203</span> InputStream in = bs.newInput();<a name="line.203"></a>
-<span class="sourceLineNo">204</span> byte status = (byte)in.read();<a name="line.204"></a>
-<span class="sourceLineNo">205</span> if (status == Dictionary.NOT_IN_DICTIONARY) {<a name="line.205"></a>
-<span class="sourceLineNo">206</span> byte[] arr = new byte[StreamUtils.readRawVarint32(in)];<a name="line.206"></a>
-<span class="sourceLineNo">207</span> int bytesRead = in.read(arr);<a name="line.207"></a>
-<span class="sourceLineNo">208</span> if (bytesRead != arr.length) {<a name="line.208"></a>
-<span class="sourceLineNo">209</span> throw new IOException("Cannot read; wanted " + arr.length + ", but got " + bytesRead);<a name="line.209"></a>
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-<span class="sourceLineNo">211</span> if (dict != null) dict.addEntry(arr, 0, arr.length);<a name="line.211"></a>
-<span class="sourceLineNo">212</span> return arr;<a name="line.212"></a>
-<span class="sourceLineNo">213</span> } else {<a name="line.213"></a>
-<span class="sourceLineNo">214</span> // Status here is the higher-order byte of index of the dictionary entry.<a name="line.214"></a>
-<span class="sourceLineNo">215</span> short dictIdx = StreamUtils.toShort(status, (byte)in.read());<a name="line.215"></a>
-<span class="sourceLineNo">216</span> byte[] entry = dict.getEntry(dictIdx);<a name="line.216"></a>
-<span class="sourceLineNo">217</span> if (entry == null) {<a name="line.217"></a>
-<span class="sourceLineNo">218</span> throw new IOException("Missing dictionary entry for index " + dictIdx);<a name="line.218"></a>
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-<span class="sourceLineNo">220</span> return entry;<a name="line.220"></a>
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-<span class="sourceLineNo">222</span> }<a name="line.222"></a>
-<span class="sourceLineNo">223</span><a name="line.223"></a>
-<span class="sourceLineNo">224</span> static class CompressedKvEncoder extends BaseEncoder {<a name="line.224"></a>
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+<span class="sourceLineNo">164</span> // We need this copy to create the ByteString as the byte[] 'buf' is not immutable. We reuse<a name="line.164"></a>
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+<span class="sourceLineNo">222</span><a name="line.222"></a>
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+<span class="sourceLineNo">229</span><a name="line.229"></a>
+<span class="sourceLineNo">230</span> @Override<a name="line.230"></a>
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+<span class="sourceLineNo">232</span> // We first write the KeyValue infrastructure as VInts.<a name="line.232"></a>
+<span class="sourceLineNo">233</span> StreamUtils.writeRawVInt32(out, KeyValueUtil.keyLength(cell));<a name="line.233"></a>
+<span class="sourceLineNo">234</span> StreamUtils.writeRawVInt32(out, cell.getValueLength());<a name="line.234"></a>
+<span class="sourceLineNo">235</span> // To support tags<a name="line.235"></a>
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+<span class="sourceLineNo">240</span> PrivateCellUtil.compressFamily(out, cell,<a name="line.240"></a>
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+<span class="sourceLineNo">242</span> PrivateCellUtil.compressQualifier(out, cell,<a name="line.242"></a>
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+<span class="sourceLineNo">244</span> // Write timestamp, type and value as uncompressed.<a name="line.244"></a>
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+<span class="sourceLineNo">246</span> out.write(cell.getTypeByte());<a name="line.246"></a>
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