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From mi...@apache.org
Subject [23/51] [partial] hbase-site git commit: Published site at eea8b38dfa0180d3e6f93d3e8055d5d4fbf673c3.
Date Fri, 11 Mar 2016 16:59:57 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/IPCUtil.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/IPCUtil.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/IPCUtil.html
index 8f9e5a8..01b545e 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/IPCUtil.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/IPCUtil.html
@@ -27,295 +27,302 @@
 <span class="sourceLineNo">019</span><a name="line.19"></a>
 <span class="sourceLineNo">020</span>import java.io.DataInput;<a name="line.20"></a>
 <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.io.InputStream;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.io.OutputStream;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.nio.BufferOverflowException;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.nio.ByteBuffer;<a name="line.25"></a>
-<span class="sourceLineNo">026</span><a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.commons.io.IOUtils;<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.hbase.classification.InterfaceAudience;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.conf.Configurable;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configuration;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.codec.Codec;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.io.BoundedByteBufferPool;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.io.ByteBufferInputStream;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.io.ByteBufferOutputStream;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.io.HeapSize;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.util.ClassSize;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.io.compress.CodecPool;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.io.compress.CompressionCodec;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.io.compress.CompressionInputStream;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.io.compress.Compressor;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.io.compress.Decompressor;<a name="line.47"></a>
-<span class="sourceLineNo">048</span><a name="line.48"></a>
-<span class="sourceLineNo">049</span>import com.google.common.base.Preconditions;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import com.google.protobuf.CodedOutputStream;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import com.google.protobuf.Message;<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> * Utility to help ipc'ing.<a name="line.54"></a>
-<span class="sourceLineNo">055</span> */<a name="line.55"></a>
-<span class="sourceLineNo">056</span>@InterfaceAudience.Private<a name="line.56"></a>
-<span class="sourceLineNo">057</span>public class IPCUtil {<a name="line.57"></a>
-<span class="sourceLineNo">058</span>  // LOG is being used in TestIPCUtil<a name="line.58"></a>
-<span class="sourceLineNo">059</span>  public static final Log LOG = LogFactory.getLog(IPCUtil.class);<a name="line.59"></a>
-<span class="sourceLineNo">060</span>  /**<a name="line.60"></a>
-<span class="sourceLineNo">061</span>   * How much we think the decompressor will expand the original compressed content.<a name="line.61"></a>
-<span class="sourceLineNo">062</span>   */<a name="line.62"></a>
-<span class="sourceLineNo">063</span>  private final int cellBlockDecompressionMultiplier;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>  private final int cellBlockBuildingInitialBufferSize;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>  private final Configuration conf;<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span>  public IPCUtil(final Configuration conf) {<a name="line.67"></a>
-<span class="sourceLineNo">068</span>    super();<a name="line.68"></a>
-<span class="sourceLineNo">069</span>    this.conf = conf;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>    this.cellBlockDecompressionMultiplier =<a name="line.70"></a>
-<span class="sourceLineNo">071</span>        conf.getInt("hbase.ipc.cellblock.decompression.buffersize.multiplier", 3);<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span>    // Guess that 16k is a good size for rpc buffer.  Could go bigger.  See the TODO below in<a name="line.73"></a>
-<span class="sourceLineNo">074</span>    // #buildCellBlock.<a name="line.74"></a>
-<span class="sourceLineNo">075</span>    this.cellBlockBuildingInitialBufferSize =<a name="line.75"></a>
-<span class="sourceLineNo">076</span>      ClassSize.align(conf.getInt("hbase.ipc.cellblock.building.initial.buffersize", 16 * 1024));<a name="line.76"></a>
-<span class="sourceLineNo">077</span>  }<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>   * Thrown if a cellscanner but no codec to encode it with.<a name="line.80"></a>
-<span class="sourceLineNo">081</span>   */<a name="line.81"></a>
-<span class="sourceLineNo">082</span>  public static class CellScannerButNoCodecException extends HBaseIOException {};<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>   * Puts CellScanner Cells into a cell block using passed in &lt;code&gt;codec&lt;/code&gt; and/or<a name="line.85"></a>
-<span class="sourceLineNo">086</span>   * &lt;code&gt;compressor&lt;/code&gt;.<a name="line.86"></a>
-<span class="sourceLineNo">087</span>   * @param codec<a name="line.87"></a>
-<span class="sourceLineNo">088</span>   * @param compressor<a name="line.88"></a>
-<span class="sourceLineNo">089</span>   * @param cellScanner<a name="line.89"></a>
-<span class="sourceLineNo">090</span>   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using<a name="line.90"></a>
-<span class="sourceLineNo">091</span>   * passed in &lt;code&gt;codec&lt;/code&gt; and/or &lt;code&gt;compressor&lt;/code&gt;; the returned buffer has been<a name="line.91"></a>
-<span class="sourceLineNo">092</span>   * flipped and is ready for reading.  Use limit to find total size.<a name="line.92"></a>
-<span class="sourceLineNo">093</span>   * @throws IOException<a name="line.93"></a>
-<span class="sourceLineNo">094</span>   */<a name="line.94"></a>
-<span class="sourceLineNo">095</span>  @SuppressWarnings("resource")<a name="line.95"></a>
-<span class="sourceLineNo">096</span>  public ByteBuffer buildCellBlock(final Codec codec, final CompressionCodec compressor,<a name="line.96"></a>
-<span class="sourceLineNo">097</span>    final CellScanner cellScanner)<a name="line.97"></a>
-<span class="sourceLineNo">098</span>  throws IOException {<a name="line.98"></a>
-<span class="sourceLineNo">099</span>    return buildCellBlock(codec, compressor, cellScanner, null);<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>  /**<a name="line.102"></a>
-<span class="sourceLineNo">103</span>   * Puts CellScanner Cells into a cell block using passed in &lt;code&gt;codec&lt;/code&gt; and/or<a name="line.103"></a>
-<span class="sourceLineNo">104</span>   * &lt;code&gt;compressor&lt;/code&gt;.<a name="line.104"></a>
-<span class="sourceLineNo">105</span>   * @param codec<a name="line.105"></a>
-<span class="sourceLineNo">106</span>   * @param compressor<a name="line.106"></a>
-<span class="sourceLineNo">107</span>   * @param cellScanner<a name="line.107"></a>
-<span class="sourceLineNo">108</span>   * @param pool Pool of ByteBuffers to make use of. Can be null and then we'll allocate<a name="line.108"></a>
-<span class="sourceLineNo">109</span>   * our own ByteBuffer.<a name="line.109"></a>
-<span class="sourceLineNo">110</span>   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using<a name="line.110"></a>
-<span class="sourceLineNo">111</span>   * passed in &lt;code&gt;codec&lt;/code&gt; and/or &lt;code&gt;compressor&lt;/code&gt;; the returned buffer has been<a name="line.111"></a>
-<span class="sourceLineNo">112</span>   * flipped and is ready for reading.  Use limit to find total size. If &lt;code&gt;pool&lt;/code&gt; was not<a name="line.112"></a>
-<span class="sourceLineNo">113</span>   * null, then this returned ByteBuffer came from there and should be returned to the pool when<a name="line.113"></a>
-<span class="sourceLineNo">114</span>   * done.<a name="line.114"></a>
-<span class="sourceLineNo">115</span>   * @throws IOException<a name="line.115"></a>
-<span class="sourceLineNo">116</span>   */<a name="line.116"></a>
-<span class="sourceLineNo">117</span>  @SuppressWarnings("resource")<a name="line.117"></a>
-<span class="sourceLineNo">118</span>  public ByteBuffer buildCellBlock(final Codec codec, final CompressionCodec compressor,<a name="line.118"></a>
-<span class="sourceLineNo">119</span>    final CellScanner cellScanner, final BoundedByteBufferPool pool)<a name="line.119"></a>
-<span class="sourceLineNo">120</span>  throws IOException {<a name="line.120"></a>
-<span class="sourceLineNo">121</span>    if (cellScanner == null) return null;<a name="line.121"></a>
-<span class="sourceLineNo">122</span>    if (codec == null) throw new CellScannerButNoCodecException();<a name="line.122"></a>
-<span class="sourceLineNo">123</span>    int bufferSize = this.cellBlockBuildingInitialBufferSize;<a name="line.123"></a>
-<span class="sourceLineNo">124</span>    ByteBufferOutputStream baos = null;<a name="line.124"></a>
-<span class="sourceLineNo">125</span>    if (pool != null) {<a name="line.125"></a>
-<span class="sourceLineNo">126</span>      ByteBuffer bb = pool.getBuffer();<a name="line.126"></a>
-<span class="sourceLineNo">127</span>      bufferSize = bb.capacity();<a name="line.127"></a>
-<span class="sourceLineNo">128</span>      baos = new ByteBufferOutputStream(bb);<a name="line.128"></a>
-<span class="sourceLineNo">129</span>    } else {<a name="line.129"></a>
-<span class="sourceLineNo">130</span>      // Then we need to make our own to return.<a name="line.130"></a>
-<span class="sourceLineNo">131</span>      if (cellScanner instanceof HeapSize) {<a name="line.131"></a>
-<span class="sourceLineNo">132</span>        long longSize = ((HeapSize)cellScanner).heapSize();<a name="line.132"></a>
-<span class="sourceLineNo">133</span>        // Just make sure we don't have a size bigger than an int.<a name="line.133"></a>
-<span class="sourceLineNo">134</span>        if (longSize &gt; Integer.MAX_VALUE) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span>          throw new IOException("Size " + longSize + " &gt; " + Integer.MAX_VALUE);<a name="line.135"></a>
-<span class="sourceLineNo">136</span>        }<a name="line.136"></a>
-<span class="sourceLineNo">137</span>        bufferSize = ClassSize.align((int)longSize);<a name="line.137"></a>
-<span class="sourceLineNo">138</span>      }<a name="line.138"></a>
-<span class="sourceLineNo">139</span>      baos = new ByteBufferOutputStream(bufferSize);<a name="line.139"></a>
-<span class="sourceLineNo">140</span>    }<a name="line.140"></a>
-<span class="sourceLineNo">141</span>    OutputStream os = baos;<a name="line.141"></a>
-<span class="sourceLineNo">142</span>    Compressor poolCompressor = null;<a name="line.142"></a>
-<span class="sourceLineNo">143</span>    try {<a name="line.143"></a>
-<span class="sourceLineNo">144</span>      if (compressor != null) {<a name="line.144"></a>
-<span class="sourceLineNo">145</span>        if (compressor instanceof Configurable) ((Configurable)compressor).setConf(this.conf);<a name="line.145"></a>
-<span class="sourceLineNo">146</span>        poolCompressor = CodecPool.getCompressor(compressor);<a name="line.146"></a>
-<span class="sourceLineNo">147</span>        os = compressor.createOutputStream(os, poolCompressor);<a name="line.147"></a>
-<span class="sourceLineNo">148</span>      }<a name="line.148"></a>
-<span class="sourceLineNo">149</span>      Codec.Encoder encoder = codec.getEncoder(os);<a name="line.149"></a>
-<span class="sourceLineNo">150</span>      int count = 0;<a name="line.150"></a>
-<span class="sourceLineNo">151</span>      while (cellScanner.advance()) {<a name="line.151"></a>
-<span class="sourceLineNo">152</span>        encoder.write(cellScanner.current());<a name="line.152"></a>
-<span class="sourceLineNo">153</span>        count++;<a name="line.153"></a>
-<span class="sourceLineNo">154</span>      }<a name="line.154"></a>
-<span class="sourceLineNo">155</span>      encoder.flush();<a name="line.155"></a>
-<span class="sourceLineNo">156</span>      // If no cells, don't mess around.  Just return null (could be a bunch of existence checking<a name="line.156"></a>
-<span class="sourceLineNo">157</span>      // gets or something -- stuff that does not return a cell).<a name="line.157"></a>
-<span class="sourceLineNo">158</span>      if (count == 0) return null;<a name="line.158"></a>
-<span class="sourceLineNo">159</span>    } catch (BufferOverflowException e) {<a name="line.159"></a>
-<span class="sourceLineNo">160</span>      throw new DoNotRetryIOException(e);<a name="line.160"></a>
-<span class="sourceLineNo">161</span>    } finally {<a name="line.161"></a>
-<span class="sourceLineNo">162</span>      os.close();<a name="line.162"></a>
-<span class="sourceLineNo">163</span>      if (poolCompressor != null) CodecPool.returnCompressor(poolCompressor);<a name="line.163"></a>
-<span class="sourceLineNo">164</span>    }<a name="line.164"></a>
-<span class="sourceLineNo">165</span>    if (LOG.isTraceEnabled()) {<a name="line.165"></a>
-<span class="sourceLineNo">166</span>      if (bufferSize &lt; baos.size()) {<a name="line.166"></a>
-<span class="sourceLineNo">167</span>        LOG.trace("Buffer grew from initial bufferSize=" + bufferSize + " to " + baos.size() +<a name="line.167"></a>
-<span class="sourceLineNo">168</span>          "; up hbase.ipc.cellblock.building.initial.buffersize?");<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>    return baos.getByteBuffer();<a name="line.171"></a>
-<span class="sourceLineNo">172</span>  }<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>   * @param codec<a name="line.175"></a>
-<span class="sourceLineNo">176</span>   * @param cellBlock<a name="line.176"></a>
-<span class="sourceLineNo">177</span>   * @return CellScanner to work against the content of &lt;code&gt;cellBlock&lt;/code&gt;<a name="line.177"></a>
-<span class="sourceLineNo">178</span>   * @throws IOException<a name="line.178"></a>
-<span class="sourceLineNo">179</span>   */<a name="line.179"></a>
-<span class="sourceLineNo">180</span>  public CellScanner createCellScanner(final Codec codec, final CompressionCodec compressor,<a name="line.180"></a>
-<span class="sourceLineNo">181</span>      final byte [] cellBlock)<a name="line.181"></a>
-<span class="sourceLineNo">182</span>  throws IOException {<a name="line.182"></a>
-<span class="sourceLineNo">183</span>    return createCellScanner(codec, compressor, ByteBuffer.wrap(cellBlock));<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>  /**<a name="line.186"></a>
-<span class="sourceLineNo">187</span>   * @param codec<a name="line.187"></a>
-<span class="sourceLineNo">188</span>   * @param cellBlock ByteBuffer containing the cells written by the Codec. The buffer should be<a name="line.188"></a>
-<span class="sourceLineNo">189</span>   * position()'ed at the start of the cell block and limit()'ed at the end.<a name="line.189"></a>
-<span class="sourceLineNo">190</span>   * @return CellScanner to work against the content of &lt;code&gt;cellBlock&lt;/code&gt;<a name="line.190"></a>
-<span class="sourceLineNo">191</span>   * @throws IOException<a name="line.191"></a>
-<span class="sourceLineNo">192</span>   */<a name="line.192"></a>
-<span class="sourceLineNo">193</span>  public CellScanner createCellScanner(final Codec codec, final CompressionCodec compressor,<a name="line.193"></a>
-<span class="sourceLineNo">194</span>      final ByteBuffer cellBlock)<a name="line.194"></a>
-<span class="sourceLineNo">195</span>  throws IOException {<a name="line.195"></a>
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-<span class="sourceLineNo">197</span>    // resources if the stream is not closed properly after we let it out.<a name="line.197"></a>
-<span class="sourceLineNo">198</span>    InputStream is = null;<a name="line.198"></a>
-<span class="sourceLineNo">199</span>    if (compressor != null) {<a name="line.199"></a>
-<span class="sourceLineNo">200</span>      // GZIPCodec fails w/ NPE if no configuration.<a name="line.200"></a>
-<span class="sourceLineNo">201</span>      if (compressor instanceof Configurable) ((Configurable)compressor).setConf(this.conf);<a name="line.201"></a>
-<span class="sourceLineNo">202</span>      Decompressor poolDecompressor = CodecPool.getDecompressor(compressor);<a name="line.202"></a>
-<span class="sourceLineNo">203</span>      CompressionInputStream cis =<a name="line.203"></a>
-<span class="sourceLineNo">204</span>        compressor.createInputStream(new ByteBufferInputStream(cellBlock), poolDecompressor);<a name="line.204"></a>
-<span class="sourceLineNo">205</span>      ByteBufferOutputStream bbos = null;<a name="line.205"></a>
-<span class="sourceLineNo">206</span>      try {<a name="line.206"></a>
-<span class="sourceLineNo">207</span>        // TODO: This is ugly.  The buffer will be resized on us if we guess wrong.<a name="line.207"></a>
-<span class="sourceLineNo">208</span>        // TODO: Reuse buffers.<a name="line.208"></a>
-<span class="sourceLineNo">209</span>        bbos = new ByteBufferOutputStream(cellBlock.remaining() *<a name="line.209"></a>
-<span class="sourceLineNo">210</span>          this.cellBlockDecompressionMultiplier);<a name="line.210"></a>
-<span class="sourceLineNo">211</span>        IOUtils.copy(cis, bbos);<a name="line.211"></a>
-<span class="sourceLineNo">212</span>        bbos.close();<a name="line.212"></a>
-<span class="sourceLineNo">213</span>        ByteBuffer bb = bbos.getByteBuffer();<a name="line.213"></a>
-<span class="sourceLineNo">214</span>        is = new ByteBufferInputStream(bb);<a name="line.214"></a>
-<span class="sourceLineNo">215</span>      } finally {<a name="line.215"></a>
-<span class="sourceLineNo">216</span>        if (is != null) is.close();<a name="line.216"></a>
-<span class="sourceLineNo">217</span>        if (bbos != null) bbos.close();<a name="line.217"></a>
-<span class="sourceLineNo">218</span><a name="line.218"></a>
-<span class="sourceLineNo">219</span>        CodecPool.returnDecompressor(poolDecompressor);<a name="line.219"></a>
-<span class="sourceLineNo">220</span>      }<a name="line.220"></a>
-<span class="sourceLineNo">221</span>    } else {<a name="line.221"></a>
-<span class="sourceLineNo">222</span>      is = new ByteBufferInputStream(cellBlock);<a name="line.222"></a>
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-<span class="sourceLineNo">224</span>    return codec.getDecoder(is);<a name="line.224"></a>
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-<span class="sourceLineNo">226</span><a name="line.226"></a>
-<span class="sourceLineNo">227</span>  /**<a name="line.227"></a>
-<span class="sourceLineNo">228</span>   * @param m Message to serialize delimited; i.e. w/ a vint of its size preceeding its<a name="line.228"></a>
-<span class="sourceLineNo">229</span>   * serialization.<a name="line.229"></a>
-<span class="sourceLineNo">230</span>   * @return The passed in Message serialized with delimiter.  Return null if &lt;code&gt;m&lt;/code&gt; is null<a name="line.230"></a>
-<span class="sourceLineNo">231</span>   * @throws IOException<a name="line.231"></a>
-<span class="sourceLineNo">232</span>   */<a name="line.232"></a>
-<span class="sourceLineNo">233</span>  public static ByteBuffer getDelimitedMessageAsByteBuffer(final Message m) throws IOException {<a name="line.233"></a>
-<span class="sourceLineNo">234</span>    if (m == null) return null;<a name="line.234"></a>
-<span class="sourceLineNo">235</span>    int serializedSize = m.getSerializedSize();<a name="line.235"></a>
-<span class="sourceLineNo">236</span>    int vintSize = CodedOutputStream.computeRawVarint32Size(serializedSize);<a name="line.236"></a>
-<span class="sourceLineNo">237</span>    byte [] buffer = new byte[serializedSize + vintSize];<a name="line.237"></a>
-<span class="sourceLineNo">238</span>    // Passing in a byte array saves COS creating a buffer which it does when using streams.<a name="line.238"></a>
-<span class="sourceLineNo">239</span>    CodedOutputStream cos = CodedOutputStream.newInstance(buffer);<a name="line.239"></a>
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-<span class="sourceLineNo">260</span>    // swoop.  This is dictated by how the server is currently written.  Server needs to change<a name="line.260"></a>
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-<span class="sourceLineNo">307</span>    Preconditions.checkArgument(totalSize &lt; Integer.MAX_VALUE);<a name="line.307"></a>
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-<span class="sourceLineNo">310</span>}<a name="line.310"></a>
+<span class="sourceLineNo">022</span>import java.io.OutputStream;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.nio.BufferOverflowException;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.nio.ByteBuffer;<a name="line.24"></a>
+<span class="sourceLineNo">025</span><a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.commons.io.IOUtils;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.commons.logging.Log;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.commons.logging.LogFactory;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configurable;<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.hbase.CellScanner;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HBaseIOException;<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.io.BoundedByteBufferPool;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.io.ByteBufferInputStream;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.io.ByteBufferOutputStream;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.io.HeapSize;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.ClassSize;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.io.compress.CodecPool;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.io.compress.CompressionCodec;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.io.compress.CompressionInputStream;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.io.compress.Compressor;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.io.compress.Decompressor;<a name="line.46"></a>
+<span class="sourceLineNo">047</span><a name="line.47"></a>
+<span class="sourceLineNo">048</span>import com.google.common.base.Preconditions;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import com.google.protobuf.CodedOutputStream;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import com.google.protobuf.Message;<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> * Utility to help ipc'ing.<a name="line.53"></a>
+<span class="sourceLineNo">054</span> */<a name="line.54"></a>
+<span class="sourceLineNo">055</span>@InterfaceAudience.Private<a name="line.55"></a>
+<span class="sourceLineNo">056</span>public class IPCUtil {<a name="line.56"></a>
+<span class="sourceLineNo">057</span>  // LOG is being used in TestIPCUtil<a name="line.57"></a>
+<span class="sourceLineNo">058</span>  public static final Log LOG = LogFactory.getLog(IPCUtil.class);<a name="line.58"></a>
+<span class="sourceLineNo">059</span>  /**<a name="line.59"></a>
+<span class="sourceLineNo">060</span>   * How much we think the decompressor will expand the original compressed content.<a name="line.60"></a>
+<span class="sourceLineNo">061</span>   */<a name="line.61"></a>
+<span class="sourceLineNo">062</span>  private final int cellBlockDecompressionMultiplier;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>  private final int cellBlockBuildingInitialBufferSize;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>  private final Configuration conf;<a name="line.64"></a>
+<span class="sourceLineNo">065</span><a name="line.65"></a>
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+<span class="sourceLineNo">068</span>    this.conf = conf;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>    this.cellBlockDecompressionMultiplier =<a name="line.69"></a>
+<span class="sourceLineNo">070</span>        conf.getInt("hbase.ipc.cellblock.decompression.buffersize.multiplier", 3);<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span>    // Guess that 16k is a good size for rpc buffer.  Could go bigger.  See the TODO below in<a name="line.72"></a>
+<span class="sourceLineNo">073</span>    // #buildCellBlock.<a name="line.73"></a>
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+<span class="sourceLineNo">075</span>      ClassSize.align(conf.getInt("hbase.ipc.cellblock.building.initial.buffersize", 16 * 1024));<a name="line.75"></a>
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+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span>  /**<a name="line.78"></a>
+<span class="sourceLineNo">079</span>   * Thrown if a cellscanner but no codec to encode it with.<a name="line.79"></a>
+<span class="sourceLineNo">080</span>   */<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  public static class CellScannerButNoCodecException extends HBaseIOException {};<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  /**<a name="line.83"></a>
+<span class="sourceLineNo">084</span>   * Puts CellScanner Cells into a cell block using passed in &lt;code&gt;codec&lt;/code&gt; and/or<a name="line.84"></a>
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+<span class="sourceLineNo">086</span>   * @param codec<a name="line.86"></a>
+<span class="sourceLineNo">087</span>   * @param compressor<a name="line.87"></a>
+<span class="sourceLineNo">088</span>   * @param cellScanner<a name="line.88"></a>
+<span class="sourceLineNo">089</span>   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using<a name="line.89"></a>
+<span class="sourceLineNo">090</span>   * passed in &lt;code&gt;codec&lt;/code&gt; and/or &lt;code&gt;compressor&lt;/code&gt;; the returned buffer has been<a name="line.90"></a>
+<span class="sourceLineNo">091</span>   * flipped and is ready for reading.  Use limit to find total size.<a name="line.91"></a>
+<span class="sourceLineNo">092</span>   * @throws IOException<a name="line.92"></a>
+<span class="sourceLineNo">093</span>   */<a name="line.93"></a>
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+<span class="sourceLineNo">096</span>    final CellScanner cellScanner)<a name="line.96"></a>
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+<span class="sourceLineNo">098</span>    return buildCellBlock(codec, compressor, cellScanner, null);<a name="line.98"></a>
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+<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>   * Puts CellScanner Cells into a cell block using passed in &lt;code&gt;codec&lt;/code&gt; and/or<a name="line.102"></a>
+<span class="sourceLineNo">103</span>   * &lt;code&gt;compressor&lt;/code&gt;.<a name="line.103"></a>
+<span class="sourceLineNo">104</span>   * @param codec<a name="line.104"></a>
+<span class="sourceLineNo">105</span>   * @param compressor<a name="line.105"></a>
+<span class="sourceLineNo">106</span>   * @param cellScanner<a name="line.106"></a>
+<span class="sourceLineNo">107</span>   * @param pool Pool of ByteBuffers to make use of. Can be null and then we'll allocate<a name="line.107"></a>
+<span class="sourceLineNo">108</span>   * our own ByteBuffer.<a name="line.108"></a>
+<span class="sourceLineNo">109</span>   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using<a name="line.109"></a>
+<span class="sourceLineNo">110</span>   * passed in &lt;code&gt;codec&lt;/code&gt; and/or &lt;code&gt;compressor&lt;/code&gt;; the returned buffer has been<a name="line.110"></a>
+<span class="sourceLineNo">111</span>   * flipped and is ready for reading.  Use limit to find total size. If &lt;code&gt;pool&lt;/code&gt; was not<a name="line.111"></a>
+<span class="sourceLineNo">112</span>   * null, then this returned ByteBuffer came from there and should be returned to the pool when<a name="line.112"></a>
+<span class="sourceLineNo">113</span>   * done.<a name="line.113"></a>
+<span class="sourceLineNo">114</span>   * @throws IOException<a name="line.114"></a>
+<span class="sourceLineNo">115</span>   */<a name="line.115"></a>
+<span class="sourceLineNo">116</span>  @SuppressWarnings("resource")<a name="line.116"></a>
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+<span class="sourceLineNo">118</span>    final CellScanner cellScanner, final BoundedByteBufferPool pool)<a name="line.118"></a>
+<span class="sourceLineNo">119</span>  throws IOException {<a name="line.119"></a>
+<span class="sourceLineNo">120</span>    if (cellScanner == null) return null;<a name="line.120"></a>
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+<span class="sourceLineNo">122</span>    int bufferSize = this.cellBlockBuildingInitialBufferSize;<a name="line.122"></a>
+<span class="sourceLineNo">123</span>    ByteBufferOutputStream baos = null;<a name="line.123"></a>
+<span class="sourceLineNo">124</span>    if (pool != null) {<a name="line.124"></a>
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+<span class="sourceLineNo">126</span>      bufferSize = bb.capacity();<a name="line.126"></a>
+<span class="sourceLineNo">127</span>      baos = new ByteBufferOutputStream(bb);<a name="line.127"></a>
+<span class="sourceLineNo">128</span>    } else {<a name="line.128"></a>
+<span class="sourceLineNo">129</span>      // Then we need to make our own to return.<a name="line.129"></a>
+<span class="sourceLineNo">130</span>      if (cellScanner instanceof HeapSize) {<a name="line.130"></a>
+<span class="sourceLineNo">131</span>        long longSize = ((HeapSize)cellScanner).heapSize();<a name="line.131"></a>
+<span class="sourceLineNo">132</span>        // Just make sure we don't have a size bigger than an int.<a name="line.132"></a>
+<span class="sourceLineNo">133</span>        if (longSize &gt; Integer.MAX_VALUE) {<a name="line.133"></a>
+<span class="sourceLineNo">134</span>          throw new IOException("Size " + longSize + " &gt; " + Integer.MAX_VALUE);<a name="line.134"></a>
+<span class="sourceLineNo">135</span>        }<a name="line.135"></a>
+<span class="sourceLineNo">136</span>        bufferSize = ClassSize.align((int)longSize);<a name="line.136"></a>
+<span class="sourceLineNo">137</span>      }<a name="line.137"></a>
+<span class="sourceLineNo">138</span>      baos = new ByteBufferOutputStream(bufferSize);<a name="line.138"></a>
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+<span class="sourceLineNo">140</span>    OutputStream os = baos;<a name="line.140"></a>
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+<span class="sourceLineNo">143</span>      if (compressor != null) {<a name="line.143"></a>
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+<span class="sourceLineNo">146</span>        os = compressor.createOutputStream(os, poolCompressor);<a name="line.146"></a>
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+<span class="sourceLineNo">150</span>      while (cellScanner.advance()) {<a name="line.150"></a>
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+<span class="sourceLineNo">152</span>        count++;<a name="line.152"></a>
+<span class="sourceLineNo">153</span>      }<a name="line.153"></a>
+<span class="sourceLineNo">154</span>      encoder.flush();<a name="line.154"></a>
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+<span class="sourceLineNo">156</span>      // gets or something -- stuff that does not return a cell).<a name="line.156"></a>
+<span class="sourceLineNo">157</span>      if (count == 0) return null;<a name="line.157"></a>
+<span class="sourceLineNo">158</span>    } catch (BufferOverflowException e) {<a name="line.158"></a>
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+<span class="sourceLineNo">163</span>    }<a name="line.163"></a>
+<span class="sourceLineNo">164</span>    if (LOG.isTraceEnabled()) {<a name="line.164"></a>
+<span class="sourceLineNo">165</span>      if (bufferSize &lt; baos.size()) {<a name="line.165"></a>
+<span class="sourceLineNo">166</span>        LOG.trace("Buffer grew from initial bufferSize=" + bufferSize + " to " + baos.size() +<a name="line.166"></a>
+<span class="sourceLineNo">167</span>          "; up hbase.ipc.cellblock.building.initial.buffersize?");<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>    return baos.getByteBuffer();<a name="line.170"></a>
+<span class="sourceLineNo">171</span>  }<a name="line.171"></a>
+<span class="sourceLineNo">172</span><a name="line.172"></a>
+<span class="sourceLineNo">173</span>  /**<a name="line.173"></a>
+<span class="sourceLineNo">174</span>   * @param codec<a name="line.174"></a>
+<span class="sourceLineNo">175</span>   * @param cellBlock<a name="line.175"></a>
+<span class="sourceLineNo">176</span>   * @return CellScanner to work against the content of &lt;code&gt;cellBlock&lt;/code&gt;<a name="line.176"></a>
+<span class="sourceLineNo">177</span>   * @throws IOException<a name="line.177"></a>
+<span class="sourceLineNo">178</span>   */<a name="line.178"></a>
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.BlockingServiceAndInterface.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.BlockingServiceAndInterface.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.BlockingServiceAndInterface.html
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.Call.html
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.Connection.html
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.Listener.Reader.html
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.Listener.html
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.Responder.html
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/0b785cb2/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.html
index ea9ea4d..411391e 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/RpcServer.html
@@ -1892,7 +1892,7 @@
 <span class="sourceLineNo">1884</span>        }<a name="line.1884"></a>
 <span class="sourceLineNo">1885</span>        if (header.hasCellBlockMeta()) {<a name="line.1885"></a>
 <span class="sourceLineNo">1886</span>          buf.position(offset);<a name="line.1886"></a>
-<span class="sourceLineNo">1887</span>          cellScanner = ipcUtil.createCellScanner(this.codec, this.compressionCodec, buf);<a name="line.1887"></a>
+<span class="sourceLineNo">1887</span>          cellScanner = ipcUtil.createCellScannerReusingBuffers(this.codec, this.compressionCodec, buf);<a name="line.1887"></a>
 <span class="sourceLineNo">1888</span>        }<a name="line.1888"></a>
 <span class="sourceLineNo">1889</span>      } catch (Throwable t) {<a name="line.1889"></a>
 <span class="sourceLineNo">1890</span>        InetSocketAddress address = getListenerAddress();<a name="line.1890"></a>


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