http://git-wip-us.apache.org/repos/asf/hbase-site/blob/ecb8d8ba/0.94/xref/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html ---------------------------------------------------------------------- diff --git a/0.94/xref/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html b/0.94/xref/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html index c2ceddf..9ece009 100644 --- a/0.94/xref/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html +++ b/0.94/xref/org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html @@ -37,523 +37,526 @@ <a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; <a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.io.RawComparator; <a class="jxr_linenumber" name="29" href="#29">29</a> -<a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * Encoder similar to {@link DiffKeyDeltaEncoder} but supposedly faster.</em> -<a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * Compress using:</em> -<a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * - store size of common prefix</em> -<a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * - save column family once in the first KeyValue</em> -<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * - use integer compression for key, value and prefix (7-bit encoding)</em> -<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * - use bits to avoid duplication key length, value length</em> -<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * and type if it same as previous</em> -<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * - store in 3 bits length of prefix timestamp</em> -<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * with previous KeyValue's timestamp</em> -<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * - one bit which allow to omit value if it is the same</em> -<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * Format:</em> -<a class="jxr_linenumber" name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * - 1 byte: flag</em> -<a class="jxr_linenumber" name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * - 1-5 bytes: key length (only if FLAG_SAME_KEY_LENGTH is not set in flag)</em> -<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * - 1-5 bytes: value length (only if FLAG_SAME_VALUE_LENGTH is not set in flag)</em> -<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * - 1-5 bytes: prefix length</em> -<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * - ... bytes: rest of the row (if prefix length is small enough)</em> -<a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * - ... bytes: qualifier (or suffix depending on prefix length)</em> -<a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * - 1-8 bytes: timestamp suffix</em> -<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * - 1 byte: type (only if FLAG_SAME_TYPE is not set in the flag)</em> -<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * - ... bytes: value (only if FLAG_SAME_VALUE is not set in the flag)</em> -<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> *</em> -<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffDeltaEncoder</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.html">BufferedDataBlockEncoder</a> { -<a class="jxr_linenumber" name="56" href="#56">56</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MASK_TIMESTAMP_LENGTH = (1 << 0) | (1 << 1) | (1 << 2); -<a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> SHIFT_TIMESTAMP_LENGTH = 0; -<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_KEY_LENGTH = 1 << 3; -<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_VALUE_LENGTH = 1 << 4; -<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_TYPE = 1 << 5; -<a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_VALUE = 1 << 6; -<a class="jxr_linenumber" name="62" href="#62">62</a> -<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/CompressionState.html">CompressionState</a> { -<a class="jxr_linenumber" name="64" href="#64">64</a> byte[] timestamp = <strong class="jxr_keyword">new</strong> byte[KeyValue.TIMESTAMP_SIZE]; -<a class="jxr_linenumber" name="65" href="#65">65</a> <strong class="jxr_keyword">int</strong> prevTimestampOffset; -<a class="jxr_linenumber" name="66" href="#66">66</a> -<a class="jxr_linenumber" name="67" href="#67">67</a> @Override -<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> readTimestamp(ByteBuffer in) { -<a class="jxr_linenumber" name="69" href="#69">69</a> in.get(timestamp); -<a class="jxr_linenumber" name="70" href="#70">70</a> } -<a class="jxr_linenumber" name="71" href="#71">71</a> -<a class="jxr_linenumber" name="72" href="#72">72</a> @Override -<a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">void</strong> copyFrom(<a href="../../../../../../org/apache/hadoop/hbase/io/encoding/CompressionState.html">CompressionState</a> state) { -<a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">super</strong>.copyFrom(state); -<a class="jxr_linenumber" name="75" href="#75">75</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> state2 = (FastDiffCompressionState) state; -<a class="jxr_linenumber" name="76" href="#76">76</a> System.arraycopy(state2.timestamp, 0, timestamp, 0, -<a class="jxr_linenumber" name="77" href="#77">77</a> KeyValue.TIMESTAMP_SIZE); -<a class="jxr_linenumber" name="78" href="#78">78</a> prevTimestampOffset = state2.prevTimestampOffset; -<a class="jxr_linenumber" name="79" href="#79">79</a> } -<a class="jxr_linenumber" name="80" href="#80">80</a> -<a class="jxr_linenumber" name="81" href="#81">81</a> <em class="jxr_javadoccomment">/**</em> -<a class="jxr_linenumber" name="82" href="#82">82</a> <em class="jxr_javadoccomment"> * Copies the first key/value from the given stream, and initializes</em> -<a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_javadoccomment"> * decompression state based on it. Assumes that we have already read key</em> -<a class="jxr_linenumber" name="84" href="#84">84</a> <em class="jxr_javadoccomment"> * and value lengths. Does not set {@link #qualifierLength} (not used by</em> -<a class="jxr_linenumber" name="85" href="#85">85</a> <em class="jxr_javadoccomment"> * decompression) or {@link #prevOffset} (set by the calle afterwards).</em> -<a class="jxr_linenumber" name="86" href="#86">86</a> <em class="jxr_javadoccomment"> */</em> -<a class="jxr_linenumber" name="87" href="#87">87</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> decompressFirstKV(ByteBuffer out, DataInputStream in) -<a class="jxr_linenumber" name="88" href="#88">88</a> <strong class="jxr_keyword">throws</strong> IOException { -<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">int</strong> kvPos = out.position(); -<a class="jxr_linenumber" name="90" href="#90">90</a> out.putInt(keyLength); -<a class="jxr_linenumber" name="91" href="#91">91</a> out.putInt(valueLength); -<a class="jxr_linenumber" name="92" href="#92">92</a> prevTimestampOffset = out.position() + keyLength - -<a class="jxr_linenumber" name="93" href="#93">93</a> KeyValue.TIMESTAMP_TYPE_SIZE; -<a class="jxr_linenumber" name="94" href="#94">94</a> ByteBufferUtils.copyFromStreamToBuffer(out, in, keyLength + valueLength); -<a class="jxr_linenumber" name="95" href="#95">95</a> rowLength = out.getShort(kvPos + KeyValue.ROW_OFFSET); -<a class="jxr_linenumber" name="96" href="#96">96</a> familyLength = out.get(kvPos + KeyValue.ROW_OFFSET + -<a class="jxr_linenumber" name="97" href="#97">97</a> KeyValue.ROW_LENGTH_SIZE + rowLength); -<a class="jxr_linenumber" name="98" href="#98">98</a> type = out.get(prevTimestampOffset + KeyValue.TIMESTAMP_SIZE); -<a class="jxr_linenumber" name="99" href="#99">99</a> } -<a class="jxr_linenumber" name="100" href="#100">100</a> -<a class="jxr_linenumber" name="101" href="#101">101</a> } -<a class="jxr_linenumber" name="102" href="#102">102</a> -<a class="jxr_linenumber" name="103" href="#103">103</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> compressSingleKeyValue( -<a class="jxr_linenumber" name="104" href="#104">104</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> previousState, -<a class="jxr_linenumber" name="105" href="#105">105</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> currentState, -<a class="jxr_linenumber" name="106" href="#106">106</a> OutputStream out, ByteBuffer in) <strong class="jxr_keyword">throws</strong> IOException { -<a class="jxr_linenumber" name="107" href="#107">107</a> currentState.prevOffset = in.position(); -<a class="jxr_linenumber" name="108" href="#108">108</a> <strong class="jxr_keyword">int</strong> keyLength = in.getInt(); -<a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">int</strong> valueOffset = -<a class="jxr_linenumber" name="110" href="#110">110</a> currentState.prevOffset + keyLength + KeyValue.ROW_OFFSET; -<a class="jxr_linenumber" name="111" href="#111">111</a> <strong class="jxr_keyword">int</strong> valueLength = in.getInt(); -<a class="jxr_linenumber" name="112" href="#112">112</a> byte flag = 0; -<a class="jxr_linenumber" name="113" href="#113">113</a> -<a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">if</strong> (previousState.isFirst()) { -<a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_comment">// copy the key, there is no common prefix with none</em> -<a class="jxr_linenumber" name="116" href="#116">116</a> out.write(flag); -<a class="jxr_linenumber" name="117" href="#117">117</a> ByteBufferUtils.putCompressedInt(out, keyLength); -<a class="jxr_linenumber" name="118" href="#118">118</a> ByteBufferUtils.putCompressedInt(out, valueLength); -<a class="jxr_linenumber" name="119" href="#119">119</a> ByteBufferUtils.putCompressedInt(out, 0); -<a class="jxr_linenumber" name="120" href="#120">120</a> -<a class="jxr_linenumber" name="121" href="#121">121</a> currentState.readKey(in, keyLength, valueLength); -<a class="jxr_linenumber" name="122" href="#122">122</a> -<a class="jxr_linenumber" name="123" href="#123">123</a> ByteBufferUtils.moveBufferToStream(out, in, keyLength + valueLength); -<a class="jxr_linenumber" name="124" href="#124">124</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_comment">// find a common prefix and skip it</em> -<a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">int</strong> commonPrefix = ByteBufferUtils.findCommonPrefix(in, in.position(), -<a class="jxr_linenumber" name="127" href="#127">127</a> previousState.prevOffset + KeyValue.ROW_OFFSET, -<a class="jxr_linenumber" name="128" href="#128">128</a> Math.min(keyLength, previousState.keyLength) - -<a class="jxr_linenumber" name="129" href="#129">129</a> KeyValue.TIMESTAMP_TYPE_SIZE); -<a class="jxr_linenumber" name="130" href="#130">130</a> -<a class="jxr_linenumber" name="131" href="#131">131</a> currentState.readKey(in, keyLength, valueLength, -<a class="jxr_linenumber" name="132" href="#132">132</a> commonPrefix, previousState); +<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.classification.InterfaceAudience; +<a class="jxr_linenumber" name="31" href="#31">31</a> +<a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * Encoder similar to {@link DiffKeyDeltaEncoder} but supposedly faster.</em> +<a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * Compress using:</em> +<a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * - store size of common prefix</em> +<a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * - save column family once in the first KeyValue</em> +<a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * - use integer compression for key, value and prefix (7-bit encoding)</em> +<a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * - use bits to avoid duplication key length, value length</em> +<a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * and type if it same as previous</em> +<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * - store in 3 bits length of prefix timestamp</em> +<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * with previous KeyValue's timestamp</em> +<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * - one bit which allow to omit value if it is the same</em> +<a class="jxr_linenumber" name="44" href="#44">44</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * Format:</em> +<a class="jxr_linenumber" name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * - 1 byte: flag</em> +<a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * - 1-5 bytes: key length (only if FLAG_SAME_KEY_LENGTH is not set in flag)</em> +<a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * - 1-5 bytes: value length (only if FLAG_SAME_VALUE_LENGTH is not set in flag)</em> +<a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * - 1-5 bytes: prefix length</em> +<a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * - ... bytes: rest of the row (if prefix length is small enough)</em> +<a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * - ... bytes: qualifier (or suffix depending on prefix length)</em> +<a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * - 1-8 bytes: timestamp suffix</em> +<a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * - 1 byte: type (only if FLAG_SAME_TYPE is not set in the flag)</em> +<a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * - ... bytes: value (only if FLAG_SAME_VALUE is not set in the flag)</em> +<a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="57" href="#57">57</a> @InterfaceAudience.Private +<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffDeltaEncoder</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.html">BufferedDataBlockEncoder</a> { +<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> MASK_TIMESTAMP_LENGTH = (1 << 0) | (1 << 1) | (1 << 2); +<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> SHIFT_TIMESTAMP_LENGTH = 0; +<a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_KEY_LENGTH = 1 << 3; +<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_VALUE_LENGTH = 1 << 4; +<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_TYPE = 1 << 5; +<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FLAG_SAME_VALUE = 1 << 6; +<a class="jxr_linenumber" name="65" href="#65">65</a> +<a class="jxr_linenumber" name="66" href="#66">66</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/CompressionState.html">CompressionState</a> { +<a class="jxr_linenumber" name="67" href="#67">67</a> byte[] timestamp = <strong class="jxr_keyword">new</strong> byte[KeyValue.TIMESTAMP_SIZE]; +<a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">int</strong> prevTimestampOffset; +<a class="jxr_linenumber" name="69" href="#69">69</a> +<a class="jxr_linenumber" name="70" href="#70">70</a> @Override +<a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> readTimestamp(ByteBuffer in) { +<a class="jxr_linenumber" name="72" href="#72">72</a> in.get(timestamp); +<a class="jxr_linenumber" name="73" href="#73">73</a> } +<a class="jxr_linenumber" name="74" href="#74">74</a> +<a class="jxr_linenumber" name="75" href="#75">75</a> @Override +<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">void</strong> copyFrom(<a href="../../../../../../org/apache/hadoop/hbase/io/encoding/CompressionState.html">CompressionState</a> state) { +<a class="jxr_linenumber" name="77" href="#77">77</a> <strong class="jxr_keyword">super</strong>.copyFrom(state); +<a class="jxr_linenumber" name="78" href="#78">78</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> state2 = (FastDiffCompressionState) state; +<a class="jxr_linenumber" name="79" href="#79">79</a> System.arraycopy(state2.timestamp, 0, timestamp, 0, +<a class="jxr_linenumber" name="80" href="#80">80</a> KeyValue.TIMESTAMP_SIZE); +<a class="jxr_linenumber" name="81" href="#81">81</a> prevTimestampOffset = state2.prevTimestampOffset; +<a class="jxr_linenumber" name="82" href="#82">82</a> } +<a class="jxr_linenumber" name="83" href="#83">83</a> +<a class="jxr_linenumber" name="84" href="#84">84</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="85" href="#85">85</a> <em class="jxr_javadoccomment"> * Copies the first key/value from the given stream, and initializes</em> +<a class="jxr_linenumber" name="86" href="#86">86</a> <em class="jxr_javadoccomment"> * decompression state based on it. Assumes that we have already read key</em> +<a class="jxr_linenumber" name="87" href="#87">87</a> <em class="jxr_javadoccomment"> * and value lengths. Does not set {@link #qualifierLength} (not used by</em> +<a class="jxr_linenumber" name="88" href="#88">88</a> <em class="jxr_javadoccomment"> * decompression) or {@link #prevOffset} (set by the calle afterwards).</em> +<a class="jxr_linenumber" name="89" href="#89">89</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> decompressFirstKV(ByteBuffer out, DataInputStream in) +<a class="jxr_linenumber" name="91" href="#91">91</a> <strong class="jxr_keyword">throws</strong> IOException { +<a class="jxr_linenumber" name="92" href="#92">92</a> <strong class="jxr_keyword">int</strong> kvPos = out.position(); +<a class="jxr_linenumber" name="93" href="#93">93</a> out.putInt(keyLength); +<a class="jxr_linenumber" name="94" href="#94">94</a> out.putInt(valueLength); +<a class="jxr_linenumber" name="95" href="#95">95</a> prevTimestampOffset = out.position() + keyLength - +<a class="jxr_linenumber" name="96" href="#96">96</a> KeyValue.TIMESTAMP_TYPE_SIZE; +<a class="jxr_linenumber" name="97" href="#97">97</a> ByteBufferUtils.copyFromStreamToBuffer(out, in, keyLength + valueLength); +<a class="jxr_linenumber" name="98" href="#98">98</a> rowLength = out.getShort(kvPos + KeyValue.ROW_OFFSET); +<a class="jxr_linenumber" name="99" href="#99">99</a> familyLength = out.get(kvPos + KeyValue.ROW_OFFSET + +<a class="jxr_linenumber" name="100" href="#100">100</a> KeyValue.ROW_LENGTH_SIZE + rowLength); +<a class="jxr_linenumber" name="101" href="#101">101</a> type = out.get(prevTimestampOffset + KeyValue.TIMESTAMP_SIZE); +<a class="jxr_linenumber" name="102" href="#102">102</a> } +<a class="jxr_linenumber" name="103" href="#103">103</a> +<a class="jxr_linenumber" name="104" href="#104">104</a> } +<a class="jxr_linenumber" name="105" href="#105">105</a> +<a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> compressSingleKeyValue( +<a class="jxr_linenumber" name="107" href="#107">107</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> previousState, +<a class="jxr_linenumber" name="108" href="#108">108</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> currentState, +<a class="jxr_linenumber" name="109" href="#109">109</a> OutputStream out, ByteBuffer in) <strong class="jxr_keyword">throws</strong> IOException { +<a class="jxr_linenumber" name="110" href="#110">110</a> currentState.prevOffset = in.position(); +<a class="jxr_linenumber" name="111" href="#111">111</a> <strong class="jxr_keyword">int</strong> keyLength = in.getInt(); +<a class="jxr_linenumber" name="112" href="#112">112</a> <strong class="jxr_keyword">int</strong> valueOffset = +<a class="jxr_linenumber" name="113" href="#113">113</a> currentState.prevOffset + keyLength + KeyValue.ROW_OFFSET; +<a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">int</strong> valueLength = in.getInt(); +<a class="jxr_linenumber" name="115" href="#115">115</a> byte flag = 0; +<a class="jxr_linenumber" name="116" href="#116">116</a> +<a class="jxr_linenumber" name="117" href="#117">117</a> <strong class="jxr_keyword">if</strong> (previousState.isFirst()) { +<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_comment">// copy the key, there is no common prefix with none</em> +<a class="jxr_linenumber" name="119" href="#119">119</a> out.write(flag); +<a class="jxr_linenumber" name="120" href="#120">120</a> ByteBufferUtils.putCompressedInt(out, keyLength); +<a class="jxr_linenumber" name="121" href="#121">121</a> ByteBufferUtils.putCompressedInt(out, valueLength); +<a class="jxr_linenumber" name="122" href="#122">122</a> ByteBufferUtils.putCompressedInt(out, 0); +<a class="jxr_linenumber" name="123" href="#123">123</a> +<a class="jxr_linenumber" name="124" href="#124">124</a> currentState.readKey(in, keyLength, valueLength); +<a class="jxr_linenumber" name="125" href="#125">125</a> +<a class="jxr_linenumber" name="126" href="#126">126</a> ByteBufferUtils.moveBufferToStream(out, in, keyLength + valueLength); +<a class="jxr_linenumber" name="127" href="#127">127</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_comment">// find a common prefix and skip it</em> +<a class="jxr_linenumber" name="129" href="#129">129</a> <strong class="jxr_keyword">int</strong> commonPrefix = ByteBufferUtils.findCommonPrefix(in, in.position(), +<a class="jxr_linenumber" name="130" href="#130">130</a> previousState.prevOffset + KeyValue.ROW_OFFSET, +<a class="jxr_linenumber" name="131" href="#131">131</a> Math.min(keyLength, previousState.keyLength) - +<a class="jxr_linenumber" name="132" href="#132">132</a> KeyValue.TIMESTAMP_TYPE_SIZE); <a class="jxr_linenumber" name="133" href="#133">133</a> -<a class="jxr_linenumber" name="134" href="#134">134</a> <strong class="jxr_keyword">if</strong> (keyLength == previousState.keyLength) { -<a class="jxr_linenumber" name="135" href="#135">135</a> flag |= FLAG_SAME_KEY_LENGTH; -<a class="jxr_linenumber" name="136" href="#136">136</a> } -<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">if</strong> (valueLength == previousState.valueLength) { -<a class="jxr_linenumber" name="138" href="#138">138</a> flag |= FLAG_SAME_VALUE_LENGTH; +<a class="jxr_linenumber" name="134" href="#134">134</a> currentState.readKey(in, keyLength, valueLength, +<a class="jxr_linenumber" name="135" href="#135">135</a> commonPrefix, previousState); +<a class="jxr_linenumber" name="136" href="#136">136</a> +<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">if</strong> (keyLength == previousState.keyLength) { +<a class="jxr_linenumber" name="138" href="#138">138</a> flag |= FLAG_SAME_KEY_LENGTH; <a class="jxr_linenumber" name="139" href="#139">139</a> } -<a class="jxr_linenumber" name="140" href="#140">140</a> <strong class="jxr_keyword">if</strong> (currentState.type == previousState.type) { -<a class="jxr_linenumber" name="141" href="#141">141</a> flag |= FLAG_SAME_TYPE; +<a class="jxr_linenumber" name="140" href="#140">140</a> <strong class="jxr_keyword">if</strong> (valueLength == previousState.valueLength) { +<a class="jxr_linenumber" name="141" href="#141">141</a> flag |= FLAG_SAME_VALUE_LENGTH; <a class="jxr_linenumber" name="142" href="#142">142</a> } -<a class="jxr_linenumber" name="143" href="#143">143</a> -<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">int</strong> commonTimestampPrefix = findCommonTimestampPrefix( -<a class="jxr_linenumber" name="145" href="#145">145</a> currentState, previousState); -<a class="jxr_linenumber" name="146" href="#146">146</a> flag |= commonTimestampPrefix << SHIFT_TIMESTAMP_LENGTH; -<a class="jxr_linenumber" name="147" href="#147">147</a> -<a class="jxr_linenumber" name="148" href="#148">148</a> <em class="jxr_comment">// Check if current and previous values are the same. Compare value</em> -<a class="jxr_linenumber" name="149" href="#149">149</a> <em class="jxr_comment">// length first as an optimization.</em> -<a class="jxr_linenumber" name="150" href="#150">150</a> <strong class="jxr_keyword">if</strong> (valueLength == previousState.valueLength) { -<a class="jxr_linenumber" name="151" href="#151">151</a> <strong class="jxr_keyword">int</strong> previousValueOffset = previousState.prevOffset -<a class="jxr_linenumber" name="152" href="#152">152</a> + previousState.keyLength + KeyValue.ROW_OFFSET; -<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">if</strong> (ByteBufferUtils.arePartsEqual(in, -<a class="jxr_linenumber" name="154" href="#154">154</a> previousValueOffset, previousState.valueLength, -<a class="jxr_linenumber" name="155" href="#155">155</a> valueOffset, valueLength)) { -<a class="jxr_linenumber" name="156" href="#156">156</a> flag |= FLAG_SAME_VALUE; -<a class="jxr_linenumber" name="157" href="#157">157</a> } -<a class="jxr_linenumber" name="158" href="#158">158</a> } -<a class="jxr_linenumber" name="159" href="#159">159</a> -<a class="jxr_linenumber" name="160" href="#160">160</a> out.write(flag); -<a class="jxr_linenumber" name="161" href="#161">161</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_KEY_LENGTH) == 0) { -<a class="jxr_linenumber" name="162" href="#162">162</a> ByteBufferUtils.putCompressedInt(out, keyLength); -<a class="jxr_linenumber" name="163" href="#163">163</a> } -<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE_LENGTH) == 0) { -<a class="jxr_linenumber" name="165" href="#165">165</a> ByteBufferUtils.putCompressedInt(out, valueLength); +<a class="jxr_linenumber" name="143" href="#143">143</a> <strong class="jxr_keyword">if</strong> (currentState.type == previousState.type) { +<a class="jxr_linenumber" name="144" href="#144">144</a> flag |= FLAG_SAME_TYPE; +<a class="jxr_linenumber" name="145" href="#145">145</a> } +<a class="jxr_linenumber" name="146" href="#146">146</a> +<a class="jxr_linenumber" name="147" href="#147">147</a> <strong class="jxr_keyword">int</strong> commonTimestampPrefix = findCommonTimestampPrefix( +<a class="jxr_linenumber" name="148" href="#148">148</a> currentState, previousState); +<a class="jxr_linenumber" name="149" href="#149">149</a> flag |= commonTimestampPrefix << SHIFT_TIMESTAMP_LENGTH; +<a class="jxr_linenumber" name="150" href="#150">150</a> +<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_comment">// Check if current and previous values are the same. Compare value</em> +<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_comment">// length first as an optimization.</em> +<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">if</strong> (valueLength == previousState.valueLength) { +<a class="jxr_linenumber" name="154" href="#154">154</a> <strong class="jxr_keyword">int</strong> previousValueOffset = previousState.prevOffset +<a class="jxr_linenumber" name="155" href="#155">155</a> + previousState.keyLength + KeyValue.ROW_OFFSET; +<a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">if</strong> (ByteBufferUtils.arePartsEqual(in, +<a class="jxr_linenumber" name="157" href="#157">157</a> previousValueOffset, previousState.valueLength, +<a class="jxr_linenumber" name="158" href="#158">158</a> valueOffset, valueLength)) { +<a class="jxr_linenumber" name="159" href="#159">159</a> flag |= FLAG_SAME_VALUE; +<a class="jxr_linenumber" name="160" href="#160">160</a> } +<a class="jxr_linenumber" name="161" href="#161">161</a> } +<a class="jxr_linenumber" name="162" href="#162">162</a> +<a class="jxr_linenumber" name="163" href="#163">163</a> out.write(flag); +<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_KEY_LENGTH) == 0) { +<a class="jxr_linenumber" name="165" href="#165">165</a> ByteBufferUtils.putCompressedInt(out, keyLength); <a class="jxr_linenumber" name="166" href="#166">166</a> } -<a class="jxr_linenumber" name="167" href="#167">167</a> ByteBufferUtils.putCompressedInt(out, commonPrefix); -<a class="jxr_linenumber" name="168" href="#168">168</a> -<a class="jxr_linenumber" name="169" href="#169">169</a> ByteBufferUtils.skip(in, commonPrefix); -<a class="jxr_linenumber" name="170" href="#170">170</a> <strong class="jxr_keyword">if</strong> (commonPrefix < currentState.rowLength + KeyValue.ROW_LENGTH_SIZE) { -<a class="jxr_linenumber" name="171" href="#171">171</a> <em class="jxr_comment">// Previous and current rows are different. Copy the differing part of</em> -<a class="jxr_linenumber" name="172" href="#172">172</a> <em class="jxr_comment">// the row, skip the column family, and copy the qualifier.</em> -<a class="jxr_linenumber" name="173" href="#173">173</a> ByteBufferUtils.moveBufferToStream(out, in, -<a class="jxr_linenumber" name="174" href="#174">174</a> currentState.rowLength + KeyValue.ROW_LENGTH_SIZE - commonPrefix); -<a class="jxr_linenumber" name="175" href="#175">175</a> ByteBufferUtils.skip(in, currentState.familyLength + -<a class="jxr_linenumber" name="176" href="#176">176</a> KeyValue.FAMILY_LENGTH_SIZE); -<a class="jxr_linenumber" name="177" href="#177">177</a> ByteBufferUtils.moveBufferToStream(out, in, -<a class="jxr_linenumber" name="178" href="#178">178</a> currentState.qualifierLength); -<a class="jxr_linenumber" name="179" href="#179">179</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="180" href="#180">180</a> <em class="jxr_comment">// The common part includes the whole row. As the column family is the</em> -<a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_comment">// same across the whole file, it will automatically be included in the</em> -<a class="jxr_linenumber" name="182" href="#182">182</a> <em class="jxr_comment">// common prefix, so we need not special-case it here.</em> -<a class="jxr_linenumber" name="183" href="#183">183</a> <strong class="jxr_keyword">int</strong> restKeyLength = keyLength - commonPrefix - -<a class="jxr_linenumber" name="184" href="#184">184</a> KeyValue.TIMESTAMP_TYPE_SIZE; -<a class="jxr_linenumber" name="185" href="#185">185</a> ByteBufferUtils.moveBufferToStream(out, in, restKeyLength); -<a class="jxr_linenumber" name="186" href="#186">186</a> } -<a class="jxr_linenumber" name="187" href="#187">187</a> ByteBufferUtils.skip(in, commonTimestampPrefix); -<a class="jxr_linenumber" name="188" href="#188">188</a> ByteBufferUtils.moveBufferToStream(out, in, -<a class="jxr_linenumber" name="189" href="#189">189</a> KeyValue.TIMESTAMP_SIZE - commonTimestampPrefix); -<a class="jxr_linenumber" name="190" href="#190">190</a> -<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_comment">// Write the type if it is not the same as before.</em> -<a class="jxr_linenumber" name="192" href="#192">192</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_TYPE) == 0) { -<a class="jxr_linenumber" name="193" href="#193">193</a> out.write(currentState.type); -<a class="jxr_linenumber" name="194" href="#194">194</a> } -<a class="jxr_linenumber" name="195" href="#195">195</a> -<a class="jxr_linenumber" name="196" href="#196">196</a> <em class="jxr_comment">// Write the value if it is not the same as before.</em> -<a class="jxr_linenumber" name="197" href="#197">197</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE) == 0) { -<a class="jxr_linenumber" name="198" href="#198">198</a> ByteBufferUtils.copyBufferToStream(out, in, valueOffset, valueLength); -<a class="jxr_linenumber" name="199" href="#199">199</a> } -<a class="jxr_linenumber" name="200" href="#200">200</a> -<a class="jxr_linenumber" name="201" href="#201">201</a> <em class="jxr_comment">// Skip key type and value in the input buffer.</em> -<a class="jxr_linenumber" name="202" href="#202">202</a> ByteBufferUtils.skip(in, KeyValue.TYPE_SIZE + currentState.valueLength); -<a class="jxr_linenumber" name="203" href="#203">203</a> } -<a class="jxr_linenumber" name="204" href="#204">204</a> } -<a class="jxr_linenumber" name="205" href="#205">205</a> -<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> findCommonTimestampPrefix(<a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> left, -<a class="jxr_linenumber" name="207" href="#207">207</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> right) { -<a class="jxr_linenumber" name="208" href="#208">208</a> <strong class="jxr_keyword">int</strong> prefixTimestamp = 0; -<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">while</strong> (prefixTimestamp < (KeyValue.TIMESTAMP_SIZE - 1) && -<a class="jxr_linenumber" name="210" href="#210">210</a> left.timestamp[prefixTimestamp] -<a class="jxr_linenumber" name="211" href="#211">211</a> == right.timestamp[prefixTimestamp]) { -<a class="jxr_linenumber" name="212" href="#212">212</a> prefixTimestamp++; -<a class="jxr_linenumber" name="213" href="#213">213</a> } -<a class="jxr_linenumber" name="214" href="#214">214</a> <strong class="jxr_keyword">return</strong> prefixTimestamp; <em class="jxr_comment">// has to be at most 7 bytes</em> -<a class="jxr_linenumber" name="215" href="#215">215</a> } -<a class="jxr_linenumber" name="216" href="#216">216</a> -<a class="jxr_linenumber" name="217" href="#217">217</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> uncompressSingleKeyValue(DataInputStream source, -<a class="jxr_linenumber" name="218" href="#218">218</a> ByteBuffer out, <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> state) -<a class="jxr_linenumber" name="219" href="#219">219</a> <strong class="jxr_keyword">throws</strong> IOException, <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/EncoderBufferTooSmallException.html">EncoderBufferTooSmallException</a> { -<a class="jxr_linenumber" name="220" href="#220">220</a> byte flag = source.readByte(); -<a class="jxr_linenumber" name="221" href="#221">221</a> <strong class="jxr_keyword">int</strong> prevKeyLength = state.keyLength; -<a class="jxr_linenumber" name="222" href="#222">222</a> -<a class="jxr_linenumber" name="223" href="#223">223</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_KEY_LENGTH) == 0) { -<a class="jxr_linenumber" name="224" href="#224">224</a> state.keyLength = ByteBufferUtils.readCompressedInt(source); -<a class="jxr_linenumber" name="225" href="#225">225</a> } -<a class="jxr_linenumber" name="226" href="#226">226</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE_LENGTH) == 0) { -<a class="jxr_linenumber" name="227" href="#227">227</a> state.valueLength = ByteBufferUtils.readCompressedInt(source); +<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE_LENGTH) == 0) { +<a class="jxr_linenumber" name="168" href="#168">168</a> ByteBufferUtils.putCompressedInt(out, valueLength); +<a class="jxr_linenumber" name="169" href="#169">169</a> } +<a class="jxr_linenumber" name="170" href="#170">170</a> ByteBufferUtils.putCompressedInt(out, commonPrefix); +<a class="jxr_linenumber" name="171" href="#171">171</a> +<a class="jxr_linenumber" name="172" href="#172">172</a> ByteBufferUtils.skip(in, commonPrefix); +<a class="jxr_linenumber" name="173" href="#173">173</a> <strong class="jxr_keyword">if</strong> (commonPrefix < currentState.rowLength + KeyValue.ROW_LENGTH_SIZE) { +<a class="jxr_linenumber" name="174" href="#174">174</a> <em class="jxr_comment">// Previous and current rows are different. Copy the differing part of</em> +<a class="jxr_linenumber" name="175" href="#175">175</a> <em class="jxr_comment">// the row, skip the column family, and copy the qualifier.</em> +<a class="jxr_linenumber" name="176" href="#176">176</a> ByteBufferUtils.moveBufferToStream(out, in, +<a class="jxr_linenumber" name="177" href="#177">177</a> currentState.rowLength + KeyValue.ROW_LENGTH_SIZE - commonPrefix); +<a class="jxr_linenumber" name="178" href="#178">178</a> ByteBufferUtils.skip(in, currentState.familyLength + +<a class="jxr_linenumber" name="179" href="#179">179</a> KeyValue.FAMILY_LENGTH_SIZE); +<a class="jxr_linenumber" name="180" href="#180">180</a> ByteBufferUtils.moveBufferToStream(out, in, +<a class="jxr_linenumber" name="181" href="#181">181</a> currentState.qualifierLength); +<a class="jxr_linenumber" name="182" href="#182">182</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="183" href="#183">183</a> <em class="jxr_comment">// The common part includes the whole row. As the column family is the</em> +<a class="jxr_linenumber" name="184" href="#184">184</a> <em class="jxr_comment">// same across the whole file, it will automatically be included in the</em> +<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_comment">// common prefix, so we need not special-case it here.</em> +<a class="jxr_linenumber" name="186" href="#186">186</a> <strong class="jxr_keyword">int</strong> restKeyLength = keyLength - commonPrefix - +<a class="jxr_linenumber" name="187" href="#187">187</a> KeyValue.TIMESTAMP_TYPE_SIZE; +<a class="jxr_linenumber" name="188" href="#188">188</a> ByteBufferUtils.moveBufferToStream(out, in, restKeyLength); +<a class="jxr_linenumber" name="189" href="#189">189</a> } +<a class="jxr_linenumber" name="190" href="#190">190</a> ByteBufferUtils.skip(in, commonTimestampPrefix); +<a class="jxr_linenumber" name="191" href="#191">191</a> ByteBufferUtils.moveBufferToStream(out, in, +<a class="jxr_linenumber" name="192" href="#192">192</a> KeyValue.TIMESTAMP_SIZE - commonTimestampPrefix); +<a class="jxr_linenumber" name="193" href="#193">193</a> +<a class="jxr_linenumber" name="194" href="#194">194</a> <em class="jxr_comment">// Write the type if it is not the same as before.</em> +<a class="jxr_linenumber" name="195" href="#195">195</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_TYPE) == 0) { +<a class="jxr_linenumber" name="196" href="#196">196</a> out.write(currentState.type); +<a class="jxr_linenumber" name="197" href="#197">197</a> } +<a class="jxr_linenumber" name="198" href="#198">198</a> +<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_comment">// Write the value if it is not the same as before.</em> +<a class="jxr_linenumber" name="200" href="#200">200</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE) == 0) { +<a class="jxr_linenumber" name="201" href="#201">201</a> ByteBufferUtils.copyBufferToStream(out, in, valueOffset, valueLength); +<a class="jxr_linenumber" name="202" href="#202">202</a> } +<a class="jxr_linenumber" name="203" href="#203">203</a> +<a class="jxr_linenumber" name="204" href="#204">204</a> <em class="jxr_comment">// Skip key type and value in the input buffer.</em> +<a class="jxr_linenumber" name="205" href="#205">205</a> ByteBufferUtils.skip(in, KeyValue.TYPE_SIZE + currentState.valueLength); +<a class="jxr_linenumber" name="206" href="#206">206</a> } +<a class="jxr_linenumber" name="207" href="#207">207</a> } +<a class="jxr_linenumber" name="208" href="#208">208</a> +<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> findCommonTimestampPrefix(<a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> left, +<a class="jxr_linenumber" name="210" href="#210">210</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> right) { +<a class="jxr_linenumber" name="211" href="#211">211</a> <strong class="jxr_keyword">int</strong> prefixTimestamp = 0; +<a class="jxr_linenumber" name="212" href="#212">212</a> <strong class="jxr_keyword">while</strong> (prefixTimestamp < (KeyValue.TIMESTAMP_SIZE - 1) && +<a class="jxr_linenumber" name="213" href="#213">213</a> left.timestamp[prefixTimestamp] +<a class="jxr_linenumber" name="214" href="#214">214</a> == right.timestamp[prefixTimestamp]) { +<a class="jxr_linenumber" name="215" href="#215">215</a> prefixTimestamp++; +<a class="jxr_linenumber" name="216" href="#216">216</a> } +<a class="jxr_linenumber" name="217" href="#217">217</a> <strong class="jxr_keyword">return</strong> prefixTimestamp; <em class="jxr_comment">// has to be at most 7 bytes</em> +<a class="jxr_linenumber" name="218" href="#218">218</a> } +<a class="jxr_linenumber" name="219" href="#219">219</a> +<a class="jxr_linenumber" name="220" href="#220">220</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> uncompressSingleKeyValue(DataInputStream source, +<a class="jxr_linenumber" name="221" href="#221">221</a> ByteBuffer out, <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> state) +<a class="jxr_linenumber" name="222" href="#222">222</a> <strong class="jxr_keyword">throws</strong> IOException, <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/EncoderBufferTooSmallException.html">EncoderBufferTooSmallException</a> { +<a class="jxr_linenumber" name="223" href="#223">223</a> byte flag = source.readByte(); +<a class="jxr_linenumber" name="224" href="#224">224</a> <strong class="jxr_keyword">int</strong> prevKeyLength = state.keyLength; +<a class="jxr_linenumber" name="225" href="#225">225</a> +<a class="jxr_linenumber" name="226" href="#226">226</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_KEY_LENGTH) == 0) { +<a class="jxr_linenumber" name="227" href="#227">227</a> state.keyLength = ByteBufferUtils.readCompressedInt(source); <a class="jxr_linenumber" name="228" href="#228">228</a> } -<a class="jxr_linenumber" name="229" href="#229">229</a> <strong class="jxr_keyword">int</strong> commonLength = ByteBufferUtils.readCompressedInt(source); -<a class="jxr_linenumber" name="230" href="#230">230</a> -<a class="jxr_linenumber" name="231" href="#231">231</a> ByteBufferUtils.ensureSpace(out, state.keyLength + state.valueLength + -<a class="jxr_linenumber" name="232" href="#232">232</a> KeyValue.ROW_OFFSET); +<a class="jxr_linenumber" name="229" href="#229">229</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE_LENGTH) == 0) { +<a class="jxr_linenumber" name="230" href="#230">230</a> state.valueLength = ByteBufferUtils.readCompressedInt(source); +<a class="jxr_linenumber" name="231" href="#231">231</a> } +<a class="jxr_linenumber" name="232" href="#232">232</a> <strong class="jxr_keyword">int</strong> commonLength = ByteBufferUtils.readCompressedInt(source); <a class="jxr_linenumber" name="233" href="#233">233</a> -<a class="jxr_linenumber" name="234" href="#234">234</a> <strong class="jxr_keyword">int</strong> kvPos = out.position(); -<a class="jxr_linenumber" name="235" href="#235">235</a> -<a class="jxr_linenumber" name="236" href="#236">236</a> <strong class="jxr_keyword">if</strong> (!state.isFirst()) { -<a class="jxr_linenumber" name="237" href="#237">237</a> <em class="jxr_comment">// copy the prefix</em> -<a class="jxr_linenumber" name="238" href="#238">238</a> <strong class="jxr_keyword">int</strong> common; -<a class="jxr_linenumber" name="239" href="#239">239</a> <strong class="jxr_keyword">int</strong> prevOffset; -<a class="jxr_linenumber" name="240" href="#240">240</a> -<a class="jxr_linenumber" name="241" href="#241">241</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE_LENGTH) == 0) { -<a class="jxr_linenumber" name="242" href="#242">242</a> out.putInt(state.keyLength); -<a class="jxr_linenumber" name="243" href="#243">243</a> out.putInt(state.valueLength); -<a class="jxr_linenumber" name="244" href="#244">244</a> prevOffset = state.prevOffset + KeyValue.ROW_OFFSET; -<a class="jxr_linenumber" name="245" href="#245">245</a> common = commonLength; -<a class="jxr_linenumber" name="246" href="#246">246</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="247" href="#247">247</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_KEY_LENGTH) != 0) { -<a class="jxr_linenumber" name="248" href="#248">248</a> prevOffset = state.prevOffset; -<a class="jxr_linenumber" name="249" href="#249">249</a> common = commonLength + KeyValue.ROW_OFFSET; -<a class="jxr_linenumber" name="250" href="#250">250</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="251" href="#251">251</a> out.putInt(state.keyLength); -<a class="jxr_linenumber" name="252" href="#252">252</a> prevOffset = state.prevOffset + KeyValue.KEY_LENGTH_SIZE; -<a class="jxr_linenumber" name="253" href="#253">253</a> common = commonLength + KeyValue.KEY_LENGTH_SIZE; -<a class="jxr_linenumber" name="254" href="#254">254</a> } -<a class="jxr_linenumber" name="255" href="#255">255</a> } -<a class="jxr_linenumber" name="256" href="#256">256</a> -<a class="jxr_linenumber" name="257" href="#257">257</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, prevOffset, common); -<a class="jxr_linenumber" name="258" href="#258">258</a> -<a class="jxr_linenumber" name="259" href="#259">259</a> <em class="jxr_comment">// copy the rest of the key from the buffer</em> -<a class="jxr_linenumber" name="260" href="#260">260</a> <strong class="jxr_keyword">int</strong> keyRestLength; -<a class="jxr_linenumber" name="261" href="#261">261</a> <strong class="jxr_keyword">if</strong> (commonLength < state.rowLength + KeyValue.ROW_LENGTH_SIZE) { -<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_comment">// omit the family part of the key, it is always the same</em> -<a class="jxr_linenumber" name="263" href="#263">263</a> <strong class="jxr_keyword">int</strong> rowWithSizeLength; -<a class="jxr_linenumber" name="264" href="#264">264</a> <strong class="jxr_keyword">int</strong> rowRestLength; -<a class="jxr_linenumber" name="265" href="#265">265</a> -<a class="jxr_linenumber" name="266" href="#266">266</a> <em class="jxr_comment">// check length of row</em> -<a class="jxr_linenumber" name="267" href="#267">267</a> <strong class="jxr_keyword">if</strong> (commonLength < KeyValue.ROW_LENGTH_SIZE) { -<a class="jxr_linenumber" name="268" href="#268">268</a> <em class="jxr_comment">// not yet copied, do it now</em> -<a class="jxr_linenumber" name="269" href="#269">269</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, -<a class="jxr_linenumber" name="270" href="#270">270</a> KeyValue.ROW_LENGTH_SIZE - commonLength); -<a class="jxr_linenumber" name="271" href="#271">271</a> -<a class="jxr_linenumber" name="272" href="#272">272</a> rowWithSizeLength = out.getShort(out.position() - -<a class="jxr_linenumber" name="273" href="#273">273</a> KeyValue.ROW_LENGTH_SIZE) + KeyValue.ROW_LENGTH_SIZE; -<a class="jxr_linenumber" name="274" href="#274">274</a> rowRestLength = rowWithSizeLength - KeyValue.ROW_LENGTH_SIZE; -<a class="jxr_linenumber" name="275" href="#275">275</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="276" href="#276">276</a> <em class="jxr_comment">// already in kvBuffer, just read it</em> -<a class="jxr_linenumber" name="277" href="#277">277</a> rowWithSizeLength = out.getShort(kvPos + KeyValue.ROW_OFFSET) + -<a class="jxr_linenumber" name="278" href="#278">278</a> KeyValue.ROW_LENGTH_SIZE; -<a class="jxr_linenumber" name="279" href="#279">279</a> rowRestLength = rowWithSizeLength - commonLength; -<a class="jxr_linenumber" name="280" href="#280">280</a> } -<a class="jxr_linenumber" name="281" href="#281">281</a> -<a class="jxr_linenumber" name="282" href="#282">282</a> <em class="jxr_comment">// copy the rest of row</em> -<a class="jxr_linenumber" name="283" href="#283">283</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, rowRestLength); +<a class="jxr_linenumber" name="234" href="#234">234</a> ByteBufferUtils.ensureSpace(out, state.keyLength + state.valueLength + +<a class="jxr_linenumber" name="235" href="#235">235</a> KeyValue.ROW_OFFSET); +<a class="jxr_linenumber" name="236" href="#236">236</a> +<a class="jxr_linenumber" name="237" href="#237">237</a> <strong class="jxr_keyword">int</strong> kvPos = out.position(); +<a class="jxr_linenumber" name="238" href="#238">238</a> +<a class="jxr_linenumber" name="239" href="#239">239</a> <strong class="jxr_keyword">if</strong> (!state.isFirst()) { +<a class="jxr_linenumber" name="240" href="#240">240</a> <em class="jxr_comment">// copy the prefix</em> +<a class="jxr_linenumber" name="241" href="#241">241</a> <strong class="jxr_keyword">int</strong> common; +<a class="jxr_linenumber" name="242" href="#242">242</a> <strong class="jxr_keyword">int</strong> prevOffset; +<a class="jxr_linenumber" name="243" href="#243">243</a> +<a class="jxr_linenumber" name="244" href="#244">244</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE_LENGTH) == 0) { +<a class="jxr_linenumber" name="245" href="#245">245</a> out.putInt(state.keyLength); +<a class="jxr_linenumber" name="246" href="#246">246</a> out.putInt(state.valueLength); +<a class="jxr_linenumber" name="247" href="#247">247</a> prevOffset = state.prevOffset + KeyValue.ROW_OFFSET; +<a class="jxr_linenumber" name="248" href="#248">248</a> common = commonLength; +<a class="jxr_linenumber" name="249" href="#249">249</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="250" href="#250">250</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_KEY_LENGTH) != 0) { +<a class="jxr_linenumber" name="251" href="#251">251</a> prevOffset = state.prevOffset; +<a class="jxr_linenumber" name="252" href="#252">252</a> common = commonLength + KeyValue.ROW_OFFSET; +<a class="jxr_linenumber" name="253" href="#253">253</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="254" href="#254">254</a> out.putInt(state.keyLength); +<a class="jxr_linenumber" name="255" href="#255">255</a> prevOffset = state.prevOffset + KeyValue.KEY_LENGTH_SIZE; +<a class="jxr_linenumber" name="256" href="#256">256</a> common = commonLength + KeyValue.KEY_LENGTH_SIZE; +<a class="jxr_linenumber" name="257" href="#257">257</a> } +<a class="jxr_linenumber" name="258" href="#258">258</a> } +<a class="jxr_linenumber" name="259" href="#259">259</a> +<a class="jxr_linenumber" name="260" href="#260">260</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, prevOffset, common); +<a class="jxr_linenumber" name="261" href="#261">261</a> +<a class="jxr_linenumber" name="262" href="#262">262</a> <em class="jxr_comment">// copy the rest of the key from the buffer</em> +<a class="jxr_linenumber" name="263" href="#263">263</a> <strong class="jxr_keyword">int</strong> keyRestLength; +<a class="jxr_linenumber" name="264" href="#264">264</a> <strong class="jxr_keyword">if</strong> (commonLength < state.rowLength + KeyValue.ROW_LENGTH_SIZE) { +<a class="jxr_linenumber" name="265" href="#265">265</a> <em class="jxr_comment">// omit the family part of the key, it is always the same</em> +<a class="jxr_linenumber" name="266" href="#266">266</a> <strong class="jxr_keyword">int</strong> rowWithSizeLength; +<a class="jxr_linenumber" name="267" href="#267">267</a> <strong class="jxr_keyword">int</strong> rowRestLength; +<a class="jxr_linenumber" name="268" href="#268">268</a> +<a class="jxr_linenumber" name="269" href="#269">269</a> <em class="jxr_comment">// check length of row</em> +<a class="jxr_linenumber" name="270" href="#270">270</a> <strong class="jxr_keyword">if</strong> (commonLength < KeyValue.ROW_LENGTH_SIZE) { +<a class="jxr_linenumber" name="271" href="#271">271</a> <em class="jxr_comment">// not yet copied, do it now</em> +<a class="jxr_linenumber" name="272" href="#272">272</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, +<a class="jxr_linenumber" name="273" href="#273">273</a> KeyValue.ROW_LENGTH_SIZE - commonLength); +<a class="jxr_linenumber" name="274" href="#274">274</a> +<a class="jxr_linenumber" name="275" href="#275">275</a> rowWithSizeLength = out.getShort(out.position() - +<a class="jxr_linenumber" name="276" href="#276">276</a> KeyValue.ROW_LENGTH_SIZE) + KeyValue.ROW_LENGTH_SIZE; +<a class="jxr_linenumber" name="277" href="#277">277</a> rowRestLength = rowWithSizeLength - KeyValue.ROW_LENGTH_SIZE; +<a class="jxr_linenumber" name="278" href="#278">278</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="279" href="#279">279</a> <em class="jxr_comment">// already in kvBuffer, just read it</em> +<a class="jxr_linenumber" name="280" href="#280">280</a> rowWithSizeLength = out.getShort(kvPos + KeyValue.ROW_OFFSET) + +<a class="jxr_linenumber" name="281" href="#281">281</a> KeyValue.ROW_LENGTH_SIZE; +<a class="jxr_linenumber" name="282" href="#282">282</a> rowRestLength = rowWithSizeLength - commonLength; +<a class="jxr_linenumber" name="283" href="#283">283</a> } <a class="jxr_linenumber" name="284" href="#284">284</a> -<a class="jxr_linenumber" name="285" href="#285">285</a> <em class="jxr_comment">// copy the column family</em> -<a class="jxr_linenumber" name="286" href="#286">286</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, -<a class="jxr_linenumber" name="287" href="#287">287</a> state.prevOffset + KeyValue.ROW_OFFSET + KeyValue.ROW_LENGTH_SIZE -<a class="jxr_linenumber" name="288" href="#288">288</a> + state.rowLength, state.familyLength -<a class="jxr_linenumber" name="289" href="#289">289</a> + KeyValue.FAMILY_LENGTH_SIZE); -<a class="jxr_linenumber" name="290" href="#290">290</a> state.rowLength = (<strong class="jxr_keyword">short</strong>) (rowWithSizeLength - -<a class="jxr_linenumber" name="291" href="#291">291</a> KeyValue.ROW_LENGTH_SIZE); -<a class="jxr_linenumber" name="292" href="#292">292</a> -<a class="jxr_linenumber" name="293" href="#293">293</a> keyRestLength = state.keyLength - rowWithSizeLength - -<a class="jxr_linenumber" name="294" href="#294">294</a> state.familyLength - -<a class="jxr_linenumber" name="295" href="#295">295</a> (KeyValue.FAMILY_LENGTH_SIZE + KeyValue.TIMESTAMP_TYPE_SIZE); -<a class="jxr_linenumber" name="296" href="#296">296</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="297" href="#297">297</a> <em class="jxr_comment">// prevRowWithSizeLength is the same as on previous row</em> -<a class="jxr_linenumber" name="298" href="#298">298</a> keyRestLength = state.keyLength - commonLength - -<a class="jxr_linenumber" name="299" href="#299">299</a> KeyValue.TIMESTAMP_TYPE_SIZE; -<a class="jxr_linenumber" name="300" href="#300">300</a> } -<a class="jxr_linenumber" name="301" href="#301">301</a> <em class="jxr_comment">// copy the rest of the key, after column family == column qualifier</em> -<a class="jxr_linenumber" name="302" href="#302">302</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, keyRestLength); -<a class="jxr_linenumber" name="303" href="#303">303</a> -<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_comment">// copy timestamp</em> -<a class="jxr_linenumber" name="305" href="#305">305</a> <strong class="jxr_keyword">int</strong> prefixTimestamp = -<a class="jxr_linenumber" name="306" href="#306">306</a> (flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH; -<a class="jxr_linenumber" name="307" href="#307">307</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, -<a class="jxr_linenumber" name="308" href="#308">308</a> state.prevTimestampOffset, prefixTimestamp); -<a class="jxr_linenumber" name="309" href="#309">309</a> state.prevTimestampOffset = out.position() - prefixTimestamp; -<a class="jxr_linenumber" name="310" href="#310">310</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, -<a class="jxr_linenumber" name="311" href="#311">311</a> KeyValue.TIMESTAMP_SIZE - prefixTimestamp); -<a class="jxr_linenumber" name="312" href="#312">312</a> -<a class="jxr_linenumber" name="313" href="#313">313</a> <em class="jxr_comment">// copy the type and value</em> -<a class="jxr_linenumber" name="314" href="#314">314</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_TYPE) != 0) { -<a class="jxr_linenumber" name="315" href="#315">315</a> out.put(state.type); -<a class="jxr_linenumber" name="316" href="#316">316</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE) != 0) { -<a class="jxr_linenumber" name="317" href="#317">317</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, state.prevOffset + -<a class="jxr_linenumber" name="318" href="#318">318</a> KeyValue.ROW_OFFSET + prevKeyLength, state.valueLength); -<a class="jxr_linenumber" name="319" href="#319">319</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="320" href="#320">320</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, -<a class="jxr_linenumber" name="321" href="#321">321</a> state.valueLength); -<a class="jxr_linenumber" name="322" href="#322">322</a> } -<a class="jxr_linenumber" name="323" href="#323">323</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="324" href="#324">324</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE) != 0) { -<a class="jxr_linenumber" name="325" href="#325">325</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, -<a class="jxr_linenumber" name="326" href="#326">326</a> KeyValue.TYPE_SIZE); -<a class="jxr_linenumber" name="327" href="#327">327</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, state.prevOffset + -<a class="jxr_linenumber" name="328" href="#328">328</a> KeyValue.ROW_OFFSET + prevKeyLength, state.valueLength); -<a class="jxr_linenumber" name="329" href="#329">329</a> } <strong class="jxr_keyword">else</strong> { -<a class="jxr_linenumber" name="330" href="#330">330</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, -<a class="jxr_linenumber" name="331" href="#331">331</a> state.valueLength + KeyValue.TYPE_SIZE); -<a class="jxr_linenumber" name="332" href="#332">332</a> } -<a class="jxr_linenumber" name="333" href="#333">333</a> state.type = out.get(state.prevTimestampOffset + -<a class="jxr_linenumber" name="334" href="#334">334</a> KeyValue.TIMESTAMP_SIZE); -<a class="jxr_linenumber" name="335" href="#335">335</a> } -<a class="jxr_linenumber" name="336" href="#336">336</a> } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">// this is the first element</em> -<a class="jxr_linenumber" name="337" href="#337">337</a> state.decompressFirstKV(out, source); -<a class="jxr_linenumber" name="338" href="#338">338</a> } -<a class="jxr_linenumber" name="339" href="#339">339</a> -<a class="jxr_linenumber" name="340" href="#340">340</a> state.prevOffset = kvPos; -<a class="jxr_linenumber" name="341" href="#341">341</a> } +<a class="jxr_linenumber" name="285" href="#285">285</a> <em class="jxr_comment">// copy the rest of row</em> +<a class="jxr_linenumber" name="286" href="#286">286</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, rowRestLength); +<a class="jxr_linenumber" name="287" href="#287">287</a> +<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_comment">// copy the column family</em> +<a class="jxr_linenumber" name="289" href="#289">289</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, +<a class="jxr_linenumber" name="290" href="#290">290</a> state.prevOffset + KeyValue.ROW_OFFSET + KeyValue.ROW_LENGTH_SIZE +<a class="jxr_linenumber" name="291" href="#291">291</a> + state.rowLength, state.familyLength +<a class="jxr_linenumber" name="292" href="#292">292</a> + KeyValue.FAMILY_LENGTH_SIZE); +<a class="jxr_linenumber" name="293" href="#293">293</a> state.rowLength = (<strong class="jxr_keyword">short</strong>) (rowWithSizeLength - +<a class="jxr_linenumber" name="294" href="#294">294</a> KeyValue.ROW_LENGTH_SIZE); +<a class="jxr_linenumber" name="295" href="#295">295</a> +<a class="jxr_linenumber" name="296" href="#296">296</a> keyRestLength = state.keyLength - rowWithSizeLength - +<a class="jxr_linenumber" name="297" href="#297">297</a> state.familyLength - +<a class="jxr_linenumber" name="298" href="#298">298</a> (KeyValue.FAMILY_LENGTH_SIZE + KeyValue.TIMESTAMP_TYPE_SIZE); +<a class="jxr_linenumber" name="299" href="#299">299</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="300" href="#300">300</a> <em class="jxr_comment">// prevRowWithSizeLength is the same as on previous row</em> +<a class="jxr_linenumber" name="301" href="#301">301</a> keyRestLength = state.keyLength - commonLength - +<a class="jxr_linenumber" name="302" href="#302">302</a> KeyValue.TIMESTAMP_TYPE_SIZE; +<a class="jxr_linenumber" name="303" href="#303">303</a> } +<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_comment">// copy the rest of the key, after column family == column qualifier</em> +<a class="jxr_linenumber" name="305" href="#305">305</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, keyRestLength); +<a class="jxr_linenumber" name="306" href="#306">306</a> +<a class="jxr_linenumber" name="307" href="#307">307</a> <em class="jxr_comment">// copy timestamp</em> +<a class="jxr_linenumber" name="308" href="#308">308</a> <strong class="jxr_keyword">int</strong> prefixTimestamp = +<a class="jxr_linenumber" name="309" href="#309">309</a> (flag & MASK_TIMESTAMP_LENGTH) >>> SHIFT_TIMESTAMP_LENGTH; +<a class="jxr_linenumber" name="310" href="#310">310</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, +<a class="jxr_linenumber" name="311" href="#311">311</a> state.prevTimestampOffset, prefixTimestamp); +<a class="jxr_linenumber" name="312" href="#312">312</a> state.prevTimestampOffset = out.position() - prefixTimestamp; +<a class="jxr_linenumber" name="313" href="#313">313</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, +<a class="jxr_linenumber" name="314" href="#314">314</a> KeyValue.TIMESTAMP_SIZE - prefixTimestamp); +<a class="jxr_linenumber" name="315" href="#315">315</a> +<a class="jxr_linenumber" name="316" href="#316">316</a> <em class="jxr_comment">// copy the type and value</em> +<a class="jxr_linenumber" name="317" href="#317">317</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_TYPE) != 0) { +<a class="jxr_linenumber" name="318" href="#318">318</a> out.put(state.type); +<a class="jxr_linenumber" name="319" href="#319">319</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE) != 0) { +<a class="jxr_linenumber" name="320" href="#320">320</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, state.prevOffset + +<a class="jxr_linenumber" name="321" href="#321">321</a> KeyValue.ROW_OFFSET + prevKeyLength, state.valueLength); +<a class="jxr_linenumber" name="322" href="#322">322</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="323" href="#323">323</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, +<a class="jxr_linenumber" name="324" href="#324">324</a> state.valueLength); +<a class="jxr_linenumber" name="325" href="#325">325</a> } +<a class="jxr_linenumber" name="326" href="#326">326</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="327" href="#327">327</a> <strong class="jxr_keyword">if</strong> ((flag & FLAG_SAME_VALUE) != 0) { +<a class="jxr_linenumber" name="328" href="#328">328</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, +<a class="jxr_linenumber" name="329" href="#329">329</a> KeyValue.TYPE_SIZE); +<a class="jxr_linenumber" name="330" href="#330">330</a> ByteBufferUtils.copyFromBufferToBuffer(out, out, state.prevOffset + +<a class="jxr_linenumber" name="331" href="#331">331</a> KeyValue.ROW_OFFSET + prevKeyLength, state.valueLength); +<a class="jxr_linenumber" name="332" href="#332">332</a> } <strong class="jxr_keyword">else</strong> { +<a class="jxr_linenumber" name="333" href="#333">333</a> ByteBufferUtils.copyFromStreamToBuffer(out, source, +<a class="jxr_linenumber" name="334" href="#334">334</a> state.valueLength + KeyValue.TYPE_SIZE); +<a class="jxr_linenumber" name="335" href="#335">335</a> } +<a class="jxr_linenumber" name="336" href="#336">336</a> state.type = out.get(state.prevTimestampOffset + +<a class="jxr_linenumber" name="337" href="#337">337</a> KeyValue.TIMESTAMP_SIZE); +<a class="jxr_linenumber" name="338" href="#338">338</a> } +<a class="jxr_linenumber" name="339" href="#339">339</a> } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">// this is the first element</em> +<a class="jxr_linenumber" name="340" href="#340">340</a> state.decompressFirstKV(out, source); +<a class="jxr_linenumber" name="341" href="#341">341</a> } <a class="jxr_linenumber" name="342" href="#342">342</a> -<a class="jxr_linenumber" name="343" href="#343">343</a> @Override -<a class="jxr_linenumber" name="344" href="#344">344</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> compressKeyValues(DataOutputStream out, -<a class="jxr_linenumber" name="345" href="#345">345</a> ByteBuffer in, <strong class="jxr_keyword">boolean</strong> includesMemstoreTS) <strong class="jxr_keyword">throws</strong> IOException { -<a class="jxr_linenumber" name="346" href="#346">346</a> in.rewind(); -<a class="jxr_linenumber" name="347" href="#347">347</a> ByteBufferUtils.putInt(out, in.limit()); -<a class="jxr_linenumber" name="348" href="#348">348</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> previousState = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a>(); -<a class="jxr_linenumber" name="349" href="#349">349</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> currentState = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a>(); -<a class="jxr_linenumber" name="350" href="#350">350</a> <strong class="jxr_keyword">while</strong> (in.hasRemaining()) { -<a class="jxr_linenumber" name="351" href="#351">351</a> compressSingleKeyValue(previousState, currentState, -<a class="jxr_linenumber" name="352" href="#352">352</a> out, in); -<a class="jxr_linenumber" name="353" href="#353">353</a> afterEncodingKeyValue(in, out, includesMemstoreTS); -<a class="jxr_linenumber" name="354" href="#354">354</a> -<a class="jxr_linenumber" name="355" href="#355">355</a> <em class="jxr_comment">// swap previousState <-> currentState</em> -<a class="jxr_linenumber" name="356" href="#356">356</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> tmp = previousState; -<a class="jxr_linenumber" name="357" href="#357">357</a> previousState = currentState; -<a class="jxr_linenumber" name="358" href="#358">358</a> currentState = tmp; -<a class="jxr_linenumber" name="359" href="#359">359</a> } -<a class="jxr_linenumber" name="360" href="#360">360</a> } -<a class="jxr_linenumber" name="361" href="#361">361</a> -<a class="jxr_linenumber" name="362" href="#362">362</a> @Override -<a class="jxr_linenumber" name="363" href="#363">363</a> <strong class="jxr_keyword">public</strong> ByteBuffer uncompressKeyValues(DataInputStream source, -<a class="jxr_linenumber" name="364" href="#364">364</a> <strong class="jxr_keyword">int</strong> allocHeaderLength, <strong class="jxr_keyword">int</strong> skipLastBytes, <strong class="jxr_keyword">boolean</strong> includesMemstoreTS) -<a class="jxr_linenumber" name="365" href="#365">365</a> <strong class="jxr_keyword">throws</strong> IOException { -<a class="jxr_linenumber" name="366" href="#366">366</a> <strong class="jxr_keyword">int</strong> decompressedSize = source.readInt(); -<a class="jxr_linenumber" name="367" href="#367">367</a> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize + -<a class="jxr_linenumber" name="368" href="#368">368</a> allocHeaderLength); -<a class="jxr_linenumber" name="369" href="#369">369</a> buffer.position(allocHeaderLength); -<a class="jxr_linenumber" name="370" href="#370">370</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> state = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a>(); -<a class="jxr_linenumber" name="371" href="#371">371</a> <strong class="jxr_keyword">while</strong> (source.available() > skipLastBytes) { -<a class="jxr_linenumber" name="372" href="#372">372</a> uncompressSingleKeyValue(source, buffer, state); -<a class="jxr_linenumber" name="373" href="#373">373</a> afterDecodingKeyValue(source, buffer, includesMemstoreTS); -<a class="jxr_linenumber" name="374" href="#374">374</a> } -<a class="jxr_linenumber" name="375" href="#375">375</a> -<a class="jxr_linenumber" name="376" href="#376">376</a> <strong class="jxr_keyword">if</strong> (source.available() != skipLastBytes) { -<a class="jxr_linenumber" name="377" href="#377">377</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Read too much bytes."</span>); -<a class="jxr_linenumber" name="378" href="#378">378</a> } -<a class="jxr_linenumber" name="379" href="#379">379</a> -<a class="jxr_linenumber" name="380" href="#380">380</a> <strong class="jxr_keyword">return</strong> buffer; -<a class="jxr_linenumber" name="381" href="#381">381</a> } +<a class="jxr_linenumber" name="343" href="#343">343</a> state.prevOffset = kvPos; +<a class="jxr_linenumber" name="344" href="#344">344</a> } +<a class="jxr_linenumber" name="345" href="#345">345</a> +<a class="jxr_linenumber" name="346" href="#346">346</a> @Override +<a class="jxr_linenumber" name="347" href="#347">347</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> compressKeyValues(DataOutputStream out, +<a class="jxr_linenumber" name="348" href="#348">348</a> ByteBuffer in, <strong class="jxr_keyword">boolean</strong> includesMemstoreTS) <strong class="jxr_keyword">throws</strong> IOException { +<a class="jxr_linenumber" name="349" href="#349">349</a> in.rewind(); +<a class="jxr_linenumber" name="350" href="#350">350</a> ByteBufferUtils.putInt(out, in.limit()); +<a class="jxr_linenumber" name="351" href="#351">351</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> previousState = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a>(); +<a class="jxr_linenumber" name="352" href="#352">352</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> currentState = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a>(); +<a class="jxr_linenumber" name="353" href="#353">353</a> <strong class="jxr_keyword">while</strong> (in.hasRemaining()) { +<a class="jxr_linenumber" name="354" href="#354">354</a> compressSingleKeyValue(previousState, currentState, +<a class="jxr_linenumber" name="355" href="#355">355</a> out, in); +<a class="jxr_linenumber" name="356" href="#356">356</a> afterEncodingKeyValue(in, out, includesMemstoreTS); +<a class="jxr_linenumber" name="357" href="#357">357</a> +<a class="jxr_linenumber" name="358" href="#358">358</a> <em class="jxr_comment">// swap previousState <-> currentState</em> +<a class="jxr_linenumber" name="359" href="#359">359</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> tmp = previousState; +<a class="jxr_linenumber" name="360" href="#360">360</a> previousState = currentState; +<a class="jxr_linenumber" name="361" href="#361">361</a> currentState = tmp; +<a class="jxr_linenumber" name="362" href="#362">362</a> } +<a class="jxr_linenumber" name="363" href="#363">363</a> } +<a class="jxr_linenumber" name="364" href="#364">364</a> +<a class="jxr_linenumber" name="365" href="#365">365</a> @Override +<a class="jxr_linenumber" name="366" href="#366">366</a> <strong class="jxr_keyword">public</strong> ByteBuffer uncompressKeyValues(DataInputStream source, +<a class="jxr_linenumber" name="367" href="#367">367</a> <strong class="jxr_keyword">int</strong> allocHeaderLength, <strong class="jxr_keyword">int</strong> skipLastBytes, <strong class="jxr_keyword">boolean</strong> includesMemstoreTS) +<a class="jxr_linenumber" name="368" href="#368">368</a> <strong class="jxr_keyword">throws</strong> IOException { +<a class="jxr_linenumber" name="369" href="#369">369</a> <strong class="jxr_keyword">int</strong> decompressedSize = source.readInt(); +<a class="jxr_linenumber" name="370" href="#370">370</a> ByteBuffer buffer = ByteBuffer.allocate(decompressedSize + +<a class="jxr_linenumber" name="371" href="#371">371</a> allocHeaderLength); +<a class="jxr_linenumber" name="372" href="#372">372</a> buffer.position(allocHeaderLength); +<a class="jxr_linenumber" name="373" href="#373">373</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a> state = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffCompressionState</a>(); +<a class="jxr_linenumber" name="374" href="#374">374</a> <strong class="jxr_keyword">while</strong> (source.available() > skipLastBytes) { +<a class="jxr_linenumber" name="375" href="#375">375</a> uncompressSingleKeyValue(source, buffer, state); +<a class="jxr_linenumber" name="376" href="#376">376</a> afterDecodingKeyValue(source, buffer, includesMemstoreTS); +<a class="jxr_linenumber" name="377" href="#377">377</a> } +<a class="jxr_linenumber" name="378" href="#378">378</a> +<a class="jxr_linenumber" name="379" href="#379">379</a> <strong class="jxr_keyword">if</strong> (source.available() != skipLastBytes) { +<a class="jxr_linenumber" name="380" href="#380">380</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Read too much bytes."</span>); +<a class="jxr_linenumber" name="381" href="#381">381</a> } <a class="jxr_linenumber" name="382" href="#382">382</a> -<a class="jxr_linenumber" name="383" href="#383">383</a> @Override -<a class="jxr_linenumber" name="384" href="#384">384</a> <strong class="jxr_keyword">public</strong> ByteBuffer getFirstKeyInBlock(ByteBuffer block) { -<a class="jxr_linenumber" name="385" href="#385">385</a> block.mark(); -<a class="jxr_linenumber" name="386" href="#386">386</a> block.position(Bytes.SIZEOF_INT + Bytes.SIZEOF_BYTE); -<a class="jxr_linenumber" name="387" href="#387">387</a> <strong class="jxr_keyword">int</strong> keyLength = ByteBufferUtils.readCompressedInt(block); -<a class="jxr_linenumber" name="388" href="#388">388</a> ByteBufferUtils.readCompressedInt(block); <em class="jxr_comment">// valueLength</em> -<a class="jxr_linenumber" name="389" href="#389">389</a> ByteBufferUtils.readCompressedInt(block); <em class="jxr_comment">// commonLength</em> -<a class="jxr_linenumber" name="390" href="#390">390</a> <strong class="jxr_keyword">int</strong> pos = block.position(); -<a class="jxr_linenumber" name="391" href="#391">391</a> block.reset(); -<a class="jxr_linenumber" name="392" href="#392">392</a> <strong class="jxr_keyword">return</strong> ByteBuffer.wrap(block.array(), block.arrayOffset() + pos, keyLength).slice(); -<a class="jxr_linenumber" name="393" href="#393">393</a> } -<a class="jxr_linenumber" name="394" href="#394">394</a> -<a class="jxr_linenumber" name="395" href="#395">395</a> @Override -<a class="jxr_linenumber" name="396" href="#396">396</a> <strong class="jxr_keyword">public</strong> String toString() { -<a class="jxr_linenumber" name="397" href="#397">397</a> <strong class="jxr_keyword">return</strong> FastDiffDeltaEncoder.<strong class="jxr_keyword">class</strong>.getSimpleName(); -<a class="jxr_linenumber" name="398" href="#398">398</a> } -<a class="jxr_linenumber" name="399" href="#399">399</a> -<a class="jxr_linenumber" name="400" href="#400">400</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffSeekerState</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.html">SeekerState</a> { -<a class="jxr_linenumber" name="401" href="#401">401</a> <strong class="jxr_keyword">private</strong> byte[] prevTimestampAndType = -<a class="jxr_linenumber" name="402" href="#402">402</a> <strong class="jxr_keyword">new</strong> byte[KeyValue.TIMESTAMP_TYPE_SIZE]; -<a class="jxr_linenumber" name="403" href="#403">403</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> rowLengthWithSize; -<a class="jxr_linenumber" name="404" href="#404">404</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> familyLengthWithSize; -<a class="jxr_linenumber" name="405" href="#405">405</a> -<a class="jxr_linenumber" name="406" href="#406">406</a> @Override -<a class="jxr_linenumber" name="407" href="#407">407</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> copyFromNext(<a href="../../../../../../org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.html">SeekerState</a> that) { -<a class="jxr_linenumber" name="408" href="#408">408</a> <strong class="jxr_keyword">super</strong>.copyFromNext(that); -<a class="jxr_linenumber" name="409" href="#409">409</a> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/FastDiffDeltaEncoder.html">FastDiffSeekerState</a> other = (FastDiffSeekerState) that; -<a class="jxr_linenumber" name="410" href="#410">410</a> System.arraycopy(other.prevTimestampAndType, 0, -<a class="jxr_linenumber" name="411" href="#411">411</a> prevTimestampAndType, 0, -<a class="jxr_linenumber" name="412" href="#412">412</a> KeyValue.TIMESTAMP_TYPE_SIZE); -<a class="jxr_linenumber" name="413" href="#413">413</a> rowLengthWithSize = other.rowLengthWithSize; -<a class="jxr_linenumber" name="414" href="#414">414</a> familyLengthWithSize = other.familyLengthWithSize; -<a class="jxr_linenumber" name="415" href="#415">415</a> } -<a class="jxr_linenumber" name="416" href="#416">416</a> } -<a class="jxr_linenumber" name="417" href="#417">417</a> -<a class="jxr_linenumber" name="418" href="#418">418</a> @Override -<a class="jxr_linenumber" name="419" href="#419">419</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/DataBlockEncoder.html">EncodedSeeker</a> createSeeker(RawComparator<byte[]> comparator, -<a class="jxr_linenumber" name="420" href="#420">420</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> includesMemstoreTS) { -<a class="jxr_linenumber" name="421" href="#421">421</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> BufferedEncodedSeeker<FastDiffSeekerState>(comparator) { -<a class="jxr_linenumber" name="422" href="#422">422</a> <strong class="jxr_keyword
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