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From st...@apache.org
Subject [08/52] [partial] hbase-site git commit: Published site at 4d1bff9e78884adf689dd587d65afe36a336c56b.
Date Tue, 15 Nov 2016 18:49:18 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/86fde03b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/CellBlockBuilder.ByteBufOutputStreamSupplier.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/CellBlockBuilder.ByteBufOutputStreamSupplier.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/CellBlockBuilder.ByteBufOutputStreamSupplier.html
index 5ce47f6..97a42b4 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/CellBlockBuilder.ByteBufOutputStreamSupplier.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/CellBlockBuilder.ByteBufOutputStreamSupplier.html
@@ -29,277 +29,293 @@
 <span class="sourceLineNo">021</span>import io.netty.buffer.ByteBufAllocator;<a name="line.21"></a>
 <span class="sourceLineNo">022</span>import io.netty.buffer.ByteBufOutputStream;<a name="line.22"></a>
 <span class="sourceLineNo">023</span><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.io.OutputStream;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.nio.BufferOverflowException;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.nio.ByteBuffer;<a name="line.27"></a>
-<span class="sourceLineNo">028</span><a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.commons.io.IOUtils;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.commons.logging.Log;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.commons.logging.LogFactory;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configurable;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<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.codec.Codec;<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.ByteBufferListOutputStream;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.io.ByteBufferOutputStream;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.io.ByteBufferPool;<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>/**<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * Helper class for building cell block.<a name="line.50"></a>
-<span class="sourceLineNo">051</span> */<a name="line.51"></a>
-<span class="sourceLineNo">052</span>@InterfaceAudience.Private<a name="line.52"></a>
-<span class="sourceLineNo">053</span>class CellBlockBuilder {<a name="line.53"></a>
-<span class="sourceLineNo">054</span><a name="line.54"></a>
-<span class="sourceLineNo">055</span>  // LOG is being used in TestCellBlockBuilder<a name="line.55"></a>
-<span class="sourceLineNo">056</span>  static final Log LOG = LogFactory.getLog(CellBlockBuilder.class);<a name="line.56"></a>
-<span class="sourceLineNo">057</span><a name="line.57"></a>
-<span class="sourceLineNo">058</span>  private final Configuration conf;<a name="line.58"></a>
+<span class="sourceLineNo">024</span>import java.io.ByteArrayInputStream;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.io.IOException;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.io.InputStream;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.io.OutputStream;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.nio.BufferOverflowException;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.nio.ByteBuffer;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.commons.io.IOUtils;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.logging.LogFactory;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configurable;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.conf.Configuration;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.codec.Codec;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.io.ByteBuffInputStream;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.io.ByteBufferInputStream;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.io.ByteBufferListOutputStream;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.io.ByteBufferOutputStream;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.io.ByteBufferPool;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.nio.SingleByteBuff;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.ClassSize;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.io.compress.CodecPool;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.io.compress.CompressionCodec;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.io.compress.CompressionInputStream;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.io.compress.Compressor;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.io.compress.Decompressor;<a name="line.52"></a>
+<span class="sourceLineNo">053</span><a name="line.53"></a>
+<span class="sourceLineNo">054</span>/**<a name="line.54"></a>
+<span class="sourceLineNo">055</span> * Helper class for building cell block.<a name="line.55"></a>
+<span class="sourceLineNo">056</span> */<a name="line.56"></a>
+<span class="sourceLineNo">057</span>@InterfaceAudience.Private<a name="line.57"></a>
+<span class="sourceLineNo">058</span>class CellBlockBuilder {<a name="line.58"></a>
 <span class="sourceLineNo">059</span><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">060</span>  // LOG is being used in TestCellBlockBuilder<a name="line.60"></a>
+<span class="sourceLineNo">061</span>  static final Log LOG = LogFactory.getLog(CellBlockBuilder.class);<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span>  private final Configuration conf;<a name="line.63"></a>
 <span class="sourceLineNo">064</span><a name="line.64"></a>
-<span class="sourceLineNo">065</span>  private final int cellBlockBuildingInitialBufferSize;<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span>  public CellBlockBuilder(Configuration conf) {<a name="line.67"></a>
-<span class="sourceLineNo">068</span>    this.conf = conf;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>    this.cellBlockDecompressionMultiplier = conf<a name="line.69"></a>
-<span class="sourceLineNo">070</span>        .getInt("hbase.ipc.cellblock.decompression.buffersize.multiplier", 3);<a name="line.70"></a>
+<span class="sourceLineNo">065</span>  /**<a name="line.65"></a>
+<span class="sourceLineNo">066</span>   * How much we think the decompressor will expand the original compressed content.<a name="line.66"></a>
+<span class="sourceLineNo">067</span>   */<a name="line.67"></a>
+<span class="sourceLineNo">068</span>  private final int cellBlockDecompressionMultiplier;<a name="line.68"></a>
+<span class="sourceLineNo">069</span><a name="line.69"></a>
+<span class="sourceLineNo">070</span>  private final int cellBlockBuildingInitialBufferSize;<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>
-<span class="sourceLineNo">074</span>    this.cellBlockBuildingInitialBufferSize = ClassSize<a name="line.74"></a>
-<span class="sourceLineNo">075</span>        .align(conf.getInt("hbase.ipc.cellblock.building.initial.buffersize", 16 * 1024));<a name="line.75"></a>
-<span class="sourceLineNo">076</span>  }<a name="line.76"></a>
-<span class="sourceLineNo">077</span><a name="line.77"></a>
-<span class="sourceLineNo">078</span>  private interface OutputStreamSupplier {<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span>    OutputStream get(int expectedSize);<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span>    int size();<a name="line.82"></a>
-<span class="sourceLineNo">083</span>  }<a name="line.83"></a>
+<span class="sourceLineNo">072</span>  public CellBlockBuilder(Configuration conf) {<a name="line.72"></a>
+<span class="sourceLineNo">073</span>    this.conf = conf;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>    this.cellBlockDecompressionMultiplier = conf<a name="line.74"></a>
+<span class="sourceLineNo">075</span>        .getInt("hbase.ipc.cellblock.decompression.buffersize.multiplier", 3);<a name="line.75"></a>
+<span class="sourceLineNo">076</span><a name="line.76"></a>
+<span class="sourceLineNo">077</span>    // Guess that 16k is a good size for rpc buffer. Could go bigger. See the TODO below in<a name="line.77"></a>
+<span class="sourceLineNo">078</span>    // #buildCellBlock.<a name="line.78"></a>
+<span class="sourceLineNo">079</span>    this.cellBlockBuildingInitialBufferSize = ClassSize<a name="line.79"></a>
+<span class="sourceLineNo">080</span>        .align(conf.getInt("hbase.ipc.cellblock.building.initial.buffersize", 16 * 1024));<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  }<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  private interface OutputStreamSupplier {<a name="line.83"></a>
 <span class="sourceLineNo">084</span><a name="line.84"></a>
-<span class="sourceLineNo">085</span>  private static final class ByteBufferOutputStreamSupplier implements OutputStreamSupplier {<a name="line.85"></a>
+<span class="sourceLineNo">085</span>    OutputStream get(int expectedSize);<a name="line.85"></a>
 <span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span>    private ByteBufferOutputStream baos;<a name="line.87"></a>
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-<span class="sourceLineNo">089</span>    @Override<a name="line.89"></a>
-<span class="sourceLineNo">090</span>    public OutputStream get(int expectedSize) {<a name="line.90"></a>
-<span class="sourceLineNo">091</span>      baos = new ByteBufferOutputStream(expectedSize);<a name="line.91"></a>
-<span class="sourceLineNo">092</span>      return baos;<a name="line.92"></a>
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-<span class="sourceLineNo">095</span>    @Override<a name="line.95"></a>
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-<span class="sourceLineNo">097</span>      return baos.size();<a name="line.97"></a>
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+<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>  private static final class ByteBufferOutputStreamSupplier implements OutputStreamSupplier {<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span>    private ByteBufferOutputStream baos;<a name="line.92"></a>
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+<span class="sourceLineNo">094</span>    @Override<a name="line.94"></a>
+<span class="sourceLineNo">095</span>    public OutputStream get(int expectedSize) {<a name="line.95"></a>
+<span class="sourceLineNo">096</span>      baos = new ByteBufferOutputStream(expectedSize);<a name="line.96"></a>
+<span class="sourceLineNo">097</span>      return baos;<a name="line.97"></a>
 <span class="sourceLineNo">098</span>    }<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>  /**<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>   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using<a name="line.107"></a>
-<span class="sourceLineNo">108</span>   *         passed in &lt;code&gt;codec&lt;/code&gt; and/or &lt;code&gt;compressor&lt;/code&gt;; the returned buffer has<a name="line.108"></a>
-<span class="sourceLineNo">109</span>   *         been flipped and is ready for reading. Use limit to find total size.<a name="line.109"></a>
-<span class="sourceLineNo">110</span>   * @throws IOException<a name="line.110"></a>
-<span class="sourceLineNo">111</span>   */<a name="line.111"></a>
-<span class="sourceLineNo">112</span>  public ByteBuffer buildCellBlock(final Codec codec, final CompressionCodec compressor,<a name="line.112"></a>
-<span class="sourceLineNo">113</span>      final CellScanner cellScanner) throws IOException {<a name="line.113"></a>
-<span class="sourceLineNo">114</span>    ByteBufferOutputStreamSupplier supplier = new ByteBufferOutputStreamSupplier();<a name="line.114"></a>
-<span class="sourceLineNo">115</span>    if (buildCellBlock(codec, compressor, cellScanner, supplier)) {<a name="line.115"></a>
-<span class="sourceLineNo">116</span>      ByteBuffer bb = supplier.baos.getByteBuffer();<a name="line.116"></a>
-<span class="sourceLineNo">117</span>      // If no cells, don't mess around. Just return null (could be a bunch of existence checking<a name="line.117"></a>
-<span class="sourceLineNo">118</span>      // gets or something -- stuff that does not return a cell).<a name="line.118"></a>
-<span class="sourceLineNo">119</span>      return bb.hasRemaining() ? bb : null;<a name="line.119"></a>
-<span class="sourceLineNo">120</span>    } else {<a name="line.120"></a>
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-<span class="sourceLineNo">122</span>    }<a name="line.122"></a>
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-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span>  private static final class ByteBufOutputStreamSupplier implements OutputStreamSupplier {<a name="line.125"></a>
-<span class="sourceLineNo">126</span><a name="line.126"></a>
-<span class="sourceLineNo">127</span>    private final ByteBufAllocator alloc;<a name="line.127"></a>
-<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span>    private ByteBuf buf;<a name="line.129"></a>
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-<span class="sourceLineNo">131</span>    public ByteBufOutputStreamSupplier(ByteBufAllocator alloc) {<a name="line.131"></a>
-<span class="sourceLineNo">132</span>      this.alloc = alloc;<a name="line.132"></a>
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-<span class="sourceLineNo">136</span>    public OutputStream get(int expectedSize) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span>      buf = alloc.buffer(expectedSize);<a name="line.137"></a>
-<span class="sourceLineNo">138</span>      return new ByteBufOutputStream(buf);<a name="line.138"></a>
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-<span class="sourceLineNo">141</span>    @Override<a name="line.141"></a>
-<span class="sourceLineNo">142</span>    public int size() {<a name="line.142"></a>
-<span class="sourceLineNo">143</span>      return buf.writerIndex();<a name="line.143"></a>
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+<span class="sourceLineNo">100</span>    @Override<a name="line.100"></a>
+<span class="sourceLineNo">101</span>    public int size() {<a name="line.101"></a>
+<span class="sourceLineNo">102</span>      return baos.size();<a name="line.102"></a>
+<span class="sourceLineNo">103</span>    }<a name="line.103"></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>   * Puts CellScanner Cells into a cell block using passed in &lt;code&gt;codec&lt;/code&gt; and/or<a name="line.107"></a>
+<span class="sourceLineNo">108</span>   * &lt;code&gt;compressor&lt;/code&gt;.<a name="line.108"></a>
+<span class="sourceLineNo">109</span>   * @param codec<a name="line.109"></a>
+<span class="sourceLineNo">110</span>   * @param compressor<a name="line.110"></a>
+<span class="sourceLineNo">111</span>   * @param cellScanner<a name="line.111"></a>
+<span class="sourceLineNo">112</span>   * @return Null or byte buffer filled with a cellblock filled with passed-in Cells encoded using<a name="line.112"></a>
+<span class="sourceLineNo">113</span>   *         passed in &lt;code&gt;codec&lt;/code&gt; and/or &lt;code&gt;compressor&lt;/code&gt;; the returned buffer has<a name="line.113"></a>
+<span class="sourceLineNo">114</span>   *         been flipped and is ready for reading. Use limit to find total size.<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>  public ByteBuffer buildCellBlock(final Codec codec, final CompressionCodec compressor,<a name="line.117"></a>
+<span class="sourceLineNo">118</span>      final CellScanner cellScanner) throws IOException {<a name="line.118"></a>
+<span class="sourceLineNo">119</span>    ByteBufferOutputStreamSupplier supplier = new ByteBufferOutputStreamSupplier();<a name="line.119"></a>
+<span class="sourceLineNo">120</span>    if (buildCellBlock(codec, compressor, cellScanner, supplier)) {<a name="line.120"></a>
+<span class="sourceLineNo">121</span>      ByteBuffer bb = supplier.baos.getByteBuffer();<a name="line.121"></a>
+<span class="sourceLineNo">122</span>      // If no cells, don't mess around. Just return null (could be a bunch of existence checking<a name="line.122"></a>
+<span class="sourceLineNo">123</span>      // gets or something -- stuff that does not return a cell).<a name="line.123"></a>
+<span class="sourceLineNo">124</span>      return bb.hasRemaining() ? bb : null;<a name="line.124"></a>
+<span class="sourceLineNo">125</span>    } else {<a name="line.125"></a>
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+<span class="sourceLineNo">127</span>    }<a name="line.127"></a>
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+<span class="sourceLineNo">131</span><a name="line.131"></a>
+<span class="sourceLineNo">132</span>    private final ByteBufAllocator alloc;<a name="line.132"></a>
+<span class="sourceLineNo">133</span><a name="line.133"></a>
+<span class="sourceLineNo">134</span>    private ByteBuf buf;<a name="line.134"></a>
+<span class="sourceLineNo">135</span><a name="line.135"></a>
+<span class="sourceLineNo">136</span>    public ByteBufOutputStreamSupplier(ByteBufAllocator alloc) {<a name="line.136"></a>
+<span class="sourceLineNo">137</span>      this.alloc = alloc;<a name="line.137"></a>
+<span class="sourceLineNo">138</span>    }<a name="line.138"></a>
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+<span class="sourceLineNo">220</span>      CellScanner cellScanner, ByteBufferPool pool) throws IOException {<a name="line.220"></a>
+<span class="sourceLineNo">221</span>    if (cellScanner == null) {<a name="line.221"></a>
+<span class="sourceLineNo">222</span>      return null;<a name="line.222"></a>
+<span class="sourceLineNo">223</span>    }<a name="line.223"></a>
+<span class="sourceLineNo">224</span>    if (codec == null) {<a name="line.224"></a>
+<span class="sourceLineNo">225</span>      throw new CellScannerButNoCodecException();<a name="line.225"></a>
+<span class="sourceLineNo">226</span>    }<a name="line.226"></a>
+<span class="sourceLineNo">227</span>    assert pool != null;<a name="line.227"></a>
+<span class="sourceLineNo">228</span>    ByteBufferListOutputStream bbos = new ByteBufferListOutputStream(pool);<a name="line.228"></a>
+<span class="sourceLineNo">229</span>    encodeCellsTo(bbos, cellScanner, codec, compressor);<a name="line.229"></a>
+<span class="sourceLineNo">230</span>    if (bbos.size() == 0) {<a name="line.230"></a>
+<span class="sourceLineNo">231</span>      bbos.releaseResources();<a name="line.231"></a>
+<span class="sourceLineNo">232</span>      return null;<a name="line.232"></a>
+<span class="sourceLineNo">233</span>    }<a name="line.233"></a>
+<span class="sourceLineNo">234</span>    return bbos;<a name="line.234"></a>
+<span class="sourceLineNo">235</span>  }<a name="line.235"></a>
+<span class="sourceLineNo">236</span><a name="line.236"></a>
+<span class="sourceLineNo">237</span>  /**<a name="line.237"></a>
+<span class="sourceLineNo">238</span>   * @param codec to use for cellblock<a name="line.238"></a>
+<span class="sourceLineNo">239</span>   * @param cellBlock to encode<a name="line.239"></a>
+<span class="sourceLineNo">240</span>   * @return CellScanner to work against the content of &lt;code&gt;cellBlock&lt;/code&gt;<a name="line.240"></a>
+<span class="sourceLineNo">241</span>   * @throws IOException if encoding fails<a name="line.241"></a>
+<span class="sourceLineNo">242</span>   */<a name="line.242"></a>
+<span class="sourceLineNo">243</span>  public CellScanner createCellScanner(final Codec codec, final CompressionCodec compressor,<a name="line.243"></a>
+<span class="sourceLineNo">244</span>      final byte[] cellBlock) throws IOException {<a name="line.244"></a>
+<span class="sourceLineNo">245</span>    // Use this method from Client side to create the CellScanner<a name="line.245"></a>
+<span class="sourceLineNo">246</span>    if (compressor != null) {<a name="line.246"></a>
+<span class="sourceLineNo">247</span>      ByteBuffer cellBlockBuf = decompress(compressor, cellBlock);<a name="line.247"></a>
+<span class="sourceLineNo">248</span>      return codec.getDecoder(new ByteBufferInputStream(cellBlockBuf));<a name="line.248"></a>
+<span class="sourceLineNo">249</span>    }<a name="line.249"></a>
+<span class="sourceLineNo">250</span>    // Not making the Decoder over the ByteBuffer purposefully. The Decoder over the BB will<a name="line.250"></a>
+<span class="sourceLineNo">251</span>    // make Cells directly over the passed BB. This method is called at client side and we don't<a name="line.251"></a>
+<span class="sourceLineNo">252</span>    // want the Cells to share the same byte[] where the RPC response is being read. Caching of any<a name="line.252"></a>
+<span class="sourceLineNo">253</span>    // of the Cells at user's app level will make it not possible to GC the response byte[]<a name="line.253"></a>
+<span class="sourceLineNo">254</span>    return codec.getDecoder(new ByteArrayInputStream(cellBlock));<a name="line.254"></a>
+<span class="sourceLineNo">255</span>  }<a name="line.255"></a>
+<span class="sourceLineNo">256</span><a name="line.256"></a>
+<span class="sourceLineNo">257</span>  /**<a name="line.257"></a>
+<span class="sourceLineNo">258</span>   * @param codec to use for cellblock<a name="line.258"></a>
+<span class="sourceLineNo">259</span>   * @param cellBlock ByteBuffer containing the cells written by the Codec. The buffer should be<a name="line.259"></a>
+<span class="sourceLineNo">260</span>   *          position()'ed at the start of the cell block and limit()'ed at the end.<a name="line.260"></a>
+<span class="sourceLineNo">261</span>   * @return CellScanner to work against the content of &lt;code&gt;cellBlock&lt;/code&gt;. All cells created<a name="line.261"></a>
+<span class="sourceLineNo">262</span>   *         out of the CellScanner will share the same ByteBuffer being passed.<a name="line.262"></a>
+<span class="sourceLineNo">263</span>   * @throws IOException if cell encoding fails<a name="line.263"></a>
+<span class="sourceLineNo">264</span>   */<a name="line.264"></a>
+<span class="sourceLineNo">265</span>  public CellScanner createCellScannerReusingBuffers(final Codec codec,<a name="line.265"></a>
+<span class="sourceLineNo">266</span>      final CompressionCodec compressor, ByteBuff cellBlock) throws IOException {<a name="line.266"></a>
+<span class="sourceLineNo">267</span>    // Use this method from HRS to create the CellScanner<a name="line.267"></a>
+<span class="sourceLineNo">268</span>    // If compressed, decompress it first before passing it on else we will leak compression<a name="line.268"></a>
+<span class="sourceLineNo">269</span>    // resources if the stream is not closed properly after we let it out.<a name="line.269"></a>
+<span class="sourceLineNo">270</span>    if (compressor != null) {<a name="line.270"></a>
+<span class="sourceLineNo">271</span>      cellBlock = decompress(compressor, cellBlock);<a name="line.271"></a>
+<span class="sourceLineNo">272</span>    }<a name="line.272"></a>
+<span class="sourceLineNo">273</span>    return codec.getDecoder(cellBlock);<a name="line.273"></a>
+<span class="sourceLineNo">274</span>  }<a name="line.274"></a>
+<span class="sourceLineNo">275</span><a name="line.275"></a>
+<span class="sourceLineNo">276</span>  private ByteBuffer decompress(CompressionCodec compressor, byte[] compressedCellBlock)<a name="line.276"></a>
+<span class="sourceLineNo">277</span>      throws IOException {<a name="line.277"></a>
+<span class="sourceLineNo">278</span>    ByteBuffer cellBlock = decompress(compressor, new ByteArrayInputStream(compressedCellBlock),<a name="line.278"></a>
+<span class="sourceLineNo">279</span>        compressedCellBlock.length * this.cellBlockDecompressionMultiplier);<a name="line.279"></a>
+<span class="sourceLineNo">280</span>    return cellBlock;<a name="line.280"></a>
+<span class="sourceLineNo">281</span>  }<a name="line.281"></a>
+<span class="sourceLineNo">282</span><a name="line.282"></a>
+<span class="sourceLineNo">283</span>  private ByteBuff decompress(CompressionCodec compressor, ByteBuff compressedCellBlock)<a name="line.283"></a>
+<span class="sourceLineNo">284</span>      throws IOException {<a name="line.284"></a>
+<span class="sourceLineNo">285</span>    ByteBuffer cellBlock = decompress(compressor, new ByteBuffInputStream(compressedCellBlock),<a name="line.285"></a>
+<span class="sourceLineNo">286</span>        compressedCellBlock.remaining() * this.cellBlockDecompressionMultiplier);<a name="line.286"></a>
+<span class="sourceLineNo">287</span>    return new SingleByteBuff(cellBlock);<a name="line.287"></a>
+<span class="sourceLineNo">288</span>  }<a name="line.288"></a>
+<span class="sourceLineNo">289</span><a name="line.289"></a>
+<span class="sourceLineNo">290</span>  private ByteBuffer decompress(CompressionCodec compressor, InputStream cellBlockStream,<a name="line.290"></a>
+<span class="sourceLineNo">291</span>      int osInitialSize) throws IOException {<a name="line.291"></a>
+<span class="sourceLineNo">292</span>    // GZIPCodec fails w/ NPE if no configuration.<a name="line.292"></a>
+<span class="sourceLineNo">293</span>    if (compressor instanceof Configurable) {<a name="line.293"></a>
+<span class="sourceLineNo">294</span>      ((Configurable) compressor).setConf(this.conf);<a name="line.294"></a>
+<span class="sourceLineNo">295</span>    }<a name="line.295"></a>
+<span class="sourceLineNo">296</span>    Decompressor poolDecompressor = CodecPool.getDecompressor(compressor);<a name="line.296"></a>
+<span class="sourceLineNo">297</span>    CompressionInputStream cis = compressor.createInputStream(cellBlockStream, poolDecompressor);<a name="line.297"></a>
+<span class="sourceLineNo">298</span>    ByteBufferOutputStream bbos;<a name="line.298"></a>
+<span class="sourceLineNo">299</span>    try {<a name="line.299"></a>
+<span class="sourceLineNo">300</span>      // TODO: This is ugly. The buffer will be resized on us if we guess wrong.<a name="line.300"></a>
+<span class="sourceLineNo">301</span>      // TODO: Reuse buffers.<a name="line.301"></a>
+<span class="sourceLineNo">302</span>      bbos = new ByteBufferOutputStream(osInitialSize);<a name="line.302"></a>
+<span class="sourceLineNo">303</span>      IOUtils.copy(cis, bbos);<a name="line.303"></a>
+<span class="sourceLineNo">304</span>      bbos.close();<a name="line.304"></a>
+<span class="sourceLineNo">305</span>      return bbos.getByteBuffer();<a name="line.305"></a>
+<span class="sourceLineNo">306</span>    } finally {<a name="line.306"></a>
+<span class="sourceLineNo">307</span>      CodecPool.returnDecompressor(poolDecompressor);<a name="line.307"></a>
+<span class="sourceLineNo">308</span>    }<a name="line.308"></a>
+<span class="sourceLineNo">309</span>  }<a name="line.309"></a>
+<span class="sourceLineNo">310</span>}<a name="line.310"></a>
 
 
 


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