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| <div id="overview"><a href="../../../../../../../target/site/apidocs/org/apache/omid/committable/hbase/RegionSplitter.html">View Javadoc</a></div><pre> |
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| <a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_comment">/*</em> |
| <a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> |
| <a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em> |
| <a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> |
| <a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> |
| <a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em> |
| <a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_comment"> * limitations under the License.</em> |
| <a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_comment"> */</em> |
| <a class="jxr_linenumber" name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.omid.committable.hbase; |
| <a class="jxr_linenumber" name="19" href="#19">19</a> |
| <a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.phoenix.thirdparty.com.google.common.base.Preconditions; |
| <a class="jxr_linenumber" name="21" href="#21">21</a> |
| <a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.commons.lang.ArrayUtils; |
| <a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration; |
| <a class="jxr_linenumber" name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.util.Bytes; |
| <a class="jxr_linenumber" name="25" href="#25">25</a> |
| <a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.io.IOException; |
| <a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.Arrays; |
| <a class="jxr_linenumber" name="28" href="#28">28</a> |
| <a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * This class contains only the required behavior of the original</em> |
| <a class="jxr_linenumber" name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * org.apache.hadoop.hbase.util.RegionSplitter class to avoid</em> |
| <a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * having a reference to hbase-testing-util, which transitively</em> |
| <a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * imports hbase-server causing dependency conflicts for this module.</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> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/omid/committable/hbase/RegionSplitter.html">RegionSplitter</a> { |
| <a class="jxr_linenumber" name="36" href="#36">36</a> |
| <a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * A generic interface for the RegionSplitter code to use for all it's functionality. Note that the original authors</em> |
| <a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * of this code use see org.apache.hadoop.hbase.util.HexStringSplit to partition their table and set it as default, but provided this for</em> |
| <a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * your custom algorithm. To use, create a new derived class from this interface and call</em> |
| <a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * see RegionSplitter#createPresplitTable or</em> |
| <a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * see RegionSplitter#rollingSplit(String, SplitAlgorithm, Configuration)} with the argument splitClassName</em> |
| <a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * giving the name of your class.</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> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">interface</strong> <a href="../../../../../org/apache/omid/committable/hbase/RegionSplitter.html">SplitAlgorithm</a> { |
| <a class="jxr_linenumber" name="46" href="#46">46</a> |
| <a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * Split a pre-existing region into 2 regions.</em> |
| <a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * @param start</em> |
| <a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * first row (inclusive)</em> |
| <a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * @param end</em> |
| <a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * last row (exclusive)</em> |
| <a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * @return the split row to use</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> byte[] split(byte[] start, byte[] end); |
| <a class="jxr_linenumber" name="57" href="#57">57</a> |
| <a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> * Split an entire table.</em> |
| <a class="jxr_linenumber" name="60" href="#60">60</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="61" href="#61">61</a> <em class="jxr_javadoccomment"> * @param numRegions</em> |
| <a class="jxr_linenumber" name="62" href="#62">62</a> <em class="jxr_javadoccomment"> * number of regions to split the table into</em> |
| <a class="jxr_linenumber" name="63" href="#63">63</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="64" href="#64">64</a> <em class="jxr_javadoccomment"> * @throws RuntimeException</em> |
| <a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment"> * user input is validated at this time. may throw a runtime exception in response to a parse</em> |
| <a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> * failure</em> |
| <a class="jxr_linenumber" name="67" href="#67">67</a> <em class="jxr_javadoccomment"> * @return array of split keys for the initial regions of the table. The length of the returned array should be</em> |
| <a class="jxr_linenumber" name="68" href="#68">68</a> <em class="jxr_javadoccomment"> * numRegions-1.</em> |
| <a class="jxr_linenumber" name="69" href="#69">69</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="70" href="#70">70</a> byte[][] split(<strong class="jxr_keyword">int</strong> numRegions); |
| <a class="jxr_linenumber" name="71" href="#71">71</a> |
| <a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * In HBase, the first row is represented by an empty byte array. This might cause problems with your split</em> |
| <a class="jxr_linenumber" name="74" href="#74">74</a> <em class="jxr_javadoccomment"> * algorithm or row printing. All your APIs will be passed firstRow() instead of empty array.</em> |
| <a class="jxr_linenumber" name="75" href="#75">75</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="76" href="#76">76</a> <em class="jxr_javadoccomment"> * @return your representation of your first row</em> |
| <a class="jxr_linenumber" name="77" href="#77">77</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="78" href="#78">78</a> byte[] firstRow(); |
| <a class="jxr_linenumber" name="79" href="#79">79</a> |
| <a class="jxr_linenumber" name="80" href="#80">80</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="81" href="#81">81</a> <em class="jxr_javadoccomment"> * In HBase, the last row is represented by an empty byte array. This might cause problems with your split</em> |
| <a class="jxr_linenumber" name="82" href="#82">82</a> <em class="jxr_javadoccomment"> * algorithm or row printing. All your APIs will be passed firstRow() instead of empty array.</em> |
| <a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="84" href="#84">84</a> <em class="jxr_javadoccomment"> * @return your representation of your last row</em> |
| <a class="jxr_linenumber" name="85" href="#85">85</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="86" href="#86">86</a> byte[] lastRow(); |
| <a class="jxr_linenumber" name="87" href="#87">87</a> |
| <a class="jxr_linenumber" name="88" href="#88">88</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="89" href="#89">89</a> <em class="jxr_javadoccomment"> * In HBase, the last row is represented by an empty byte array. Set this value to help the split code</em> |
| <a class="jxr_linenumber" name="90" href="#90">90</a> <em class="jxr_javadoccomment"> * understand how to evenly divide the first region.</em> |
| <a class="jxr_linenumber" name="91" href="#91">91</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="92" href="#92">92</a> <em class="jxr_javadoccomment"> * @param userInput</em> |
| <a class="jxr_linenumber" name="93" href="#93">93</a> <em class="jxr_javadoccomment"> * raw user input (may throw RuntimeException on parse failure)</em> |
| <a class="jxr_linenumber" name="94" href="#94">94</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="95" href="#95">95</a> <strong class="jxr_keyword">void</strong> setFirstRow(String userInput); |
| <a class="jxr_linenumber" name="96" href="#96">96</a> |
| <a class="jxr_linenumber" name="97" href="#97">97</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="98" href="#98">98</a> <em class="jxr_javadoccomment"> * In HBase, the last row is represented by an empty byte array. Set this value to help the split code</em> |
| <a class="jxr_linenumber" name="99" href="#99">99</a> <em class="jxr_javadoccomment"> * understand how to evenly divide the last region. Note that this last row is inclusive for all rows sharing</em> |
| <a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment"> * the same prefix.</em> |
| <a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="102" href="#102">102</a> <em class="jxr_javadoccomment"> * @param userInput raw user input (may throw RuntimeException on parse failure)</em> |
| <a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="104" href="#104">104</a> <strong class="jxr_keyword">void</strong> setLastRow(String userInput); |
| <a class="jxr_linenumber" name="105" href="#105">105</a> |
| <a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment"> * @param input</em> |
| <a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment"> * user or file input for row</em> |
| <a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment"> * @return byte array representation of this row for HBase</em> |
| <a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="111" href="#111">111</a> byte[] strToRow(String input); |
| <a class="jxr_linenumber" name="112" href="#112">112</a> |
| <a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment"> * @param row byte array representing a row in HBase</em> |
| <a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment"> * @return String to use for debug and file printing</em> |
| <a class="jxr_linenumber" name="116" href="#116">116</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="117" href="#117">117</a> String rowToStr(byte[] row); |
| <a class="jxr_linenumber" name="118" href="#118">118</a> |
| <a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment"> * @return the separator character to use when storing / printing the row</em> |
| <a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="122" href="#122">122</a> String separator(); |
| <a class="jxr_linenumber" name="123" href="#123">123</a> |
| <a class="jxr_linenumber" name="124" href="#124">124</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_javadoccomment"> * Set the first row</em> |
| <a class="jxr_linenumber" name="126" href="#126">126</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="127" href="#127">127</a> <em class="jxr_javadoccomment"> * @param userInput</em> |
| <a class="jxr_linenumber" name="128" href="#128">128</a> <em class="jxr_javadoccomment"> * byte array of the row key.</em> |
| <a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="130" href="#130">130</a> <strong class="jxr_keyword">void</strong> setFirstRow(byte[] userInput); |
| <a class="jxr_linenumber" name="131" href="#131">131</a> |
| <a class="jxr_linenumber" name="132" href="#132">132</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="133" href="#133">133</a> <em class="jxr_javadoccomment"> * Set the last row</em> |
| <a class="jxr_linenumber" name="134" href="#134">134</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="135" href="#135">135</a> <em class="jxr_javadoccomment"> * @param userInput</em> |
| <a class="jxr_linenumber" name="136" href="#136">136</a> <em class="jxr_javadoccomment"> * byte array of the row key.</em> |
| <a class="jxr_linenumber" name="137" href="#137">137</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="138" href="#138">138</a> <strong class="jxr_keyword">void</strong> setLastRow(byte[] userInput); |
| <a class="jxr_linenumber" name="139" href="#139">139</a> } |
| <a class="jxr_linenumber" name="140" href="#140">140</a> |
| <a class="jxr_linenumber" name="141" href="#141">141</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="142" href="#142">142</a> <em class="jxr_javadoccomment"> * @param conf Hbase conf</em> |
| <a class="jxr_linenumber" name="143" href="#143">143</a> <em class="jxr_javadoccomment"> * @param splitClassName split class name to be used</em> |
| <a class="jxr_linenumber" name="144" href="#144">144</a> <em class="jxr_javadoccomment"> * @return an instance of SplitAlgorithm</em> |
| <a class="jxr_linenumber" name="145" href="#145">145</a> <em class="jxr_javadoccomment"> * @throws IOException if the specified SplitAlgorithm class couldn't be instantiated</em> |
| <a class="jxr_linenumber" name="146" href="#146">146</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="147" href="#147">147</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../../org/apache/omid/committable/hbase/RegionSplitter.html">SplitAlgorithm</a> newSplitAlgoInstance(Configuration conf, |
| <a class="jxr_linenumber" name="148" href="#148">148</a> String splitClassName) <strong class="jxr_keyword">throws</strong> IOException { |
| <a class="jxr_linenumber" name="149" href="#149">149</a> Class<?> splitClass; |
| <a class="jxr_linenumber" name="150" href="#150">150</a> |
| <a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_comment">// For split algorithms builtin to RegionSplitter, the user can specify</em> |
| <a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_comment">// their simple class name instead of a fully qualified class name.</em> |
| <a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">if</strong> (splitClassName.equals(UniformSplit.<strong class="jxr_keyword">class</strong>.getSimpleName())) { |
| <a class="jxr_linenumber" name="154" href="#154">154</a> splitClass = UniformSplit.<strong class="jxr_keyword">class</strong>; |
| <a class="jxr_linenumber" name="155" href="#155">155</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="157" href="#157">157</a> splitClass = conf.getClassByName(splitClassName); |
| <a class="jxr_linenumber" name="158" href="#158">158</a> } <strong class="jxr_keyword">catch</strong> (ClassNotFoundException e) { |
| <a class="jxr_linenumber" name="159" href="#159">159</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Couldn't load split class "</span> + splitClassName, e); |
| <a class="jxr_linenumber" name="160" href="#160">160</a> } |
| <a class="jxr_linenumber" name="161" href="#161">161</a> <strong class="jxr_keyword">if</strong> (splitClass == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="162" href="#162">162</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Failed loading split class "</span> + splitClassName); |
| <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> (!SplitAlgorithm.<strong class="jxr_keyword">class</strong>.isAssignableFrom(splitClass)) { |
| <a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException( |
| <a class="jxr_linenumber" name="166" href="#166">166</a> <span class="jxr_string">"Specified split class doesn't implement SplitAlgorithm"</span>); |
| <a class="jxr_linenumber" name="167" href="#167">167</a> } |
| <a class="jxr_linenumber" name="168" href="#168">168</a> } |
| <a class="jxr_linenumber" name="169" href="#169">169</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="170" href="#170">170</a> <strong class="jxr_keyword">return</strong> splitClass.asSubclass(SplitAlgorithm.<strong class="jxr_keyword">class</strong>).newInstance(); |
| <a class="jxr_linenumber" name="171" href="#171">171</a> } <strong class="jxr_keyword">catch</strong> (Exception e) { |
| <a class="jxr_linenumber" name="172" href="#172">172</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IOException(<span class="jxr_string">"Problem loading split algorithm: "</span>, e); |
| <a class="jxr_linenumber" name="173" href="#173">173</a> } |
| <a class="jxr_linenumber" name="174" href="#174">174</a> } |
| <a class="jxr_linenumber" name="175" href="#175">175</a> |
| <a class="jxr_linenumber" name="176" href="#176">176</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="177" href="#177">177</a> <em class="jxr_javadoccomment"> * A SplitAlgorithm that divides the space of possible keys evenly. Useful when the keys are approximately uniform</em> |
| <a class="jxr_linenumber" name="178" href="#178">178</a> <em class="jxr_javadoccomment"> * random bytes (e.g. hashes). Rows are raw byte values in the range [00..FF] and are right-padded with zeros</em> |
| <a class="jxr_linenumber" name="179" href="#179">179</a> <em class="jxr_javadoccomment"> * to keep the same memcmp() order. This is the natural algorithm to use for a byte[] environment and saves space,</em> |
| <a class="jxr_linenumber" name="180" href="#180">180</a> <em class="jxr_javadoccomment"> * but is not necessarily the easiest for readability.</em> |
| <a class="jxr_linenumber" name="181" href="#181">181</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="182" href="#182">182</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/omid/committable/hbase/RegionSplitter.html">UniformSplit</a> <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/omid/committable/hbase/RegionSplitter.html">SplitAlgorithm</a> { |
| <a class="jxr_linenumber" name="183" href="#183">183</a> |
| <a class="jxr_linenumber" name="184" href="#184">184</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte xFF = (byte) 0xFF; |
| <a class="jxr_linenumber" name="185" href="#185">185</a> byte[] firstRowBytes = ArrayUtils.EMPTY_BYTE_ARRAY; |
| <a class="jxr_linenumber" name="186" href="#186">186</a> byte[] lastRowBytes = |
| <a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">new</strong> byte[]{xFF, xFF, xFF, xFF, xFF, xFF, xFF, xFF}; |
| <a class="jxr_linenumber" name="188" href="#188">188</a> |
| <a class="jxr_linenumber" name="189" href="#189">189</a> <strong class="jxr_keyword">public</strong> byte[] split(byte[] start, byte[] end) { |
| <a class="jxr_linenumber" name="190" href="#190">190</a> <strong class="jxr_keyword">return</strong> Bytes.split(start, end, 1)[1]; |
| <a class="jxr_linenumber" name="191" href="#191">191</a> } |
| <a class="jxr_linenumber" name="192" href="#192">192</a> |
| <a class="jxr_linenumber" name="193" href="#193">193</a> @Override |
| <a class="jxr_linenumber" name="194" href="#194">194</a> <strong class="jxr_keyword">public</strong> byte[][] split(<strong class="jxr_keyword">int</strong> numRegions) { |
| <a class="jxr_linenumber" name="195" href="#195">195</a> Preconditions.checkArgument( |
| <a class="jxr_linenumber" name="196" href="#196">196</a> Bytes.compareTo(lastRowBytes, firstRowBytes) > 0, |
| <a class="jxr_linenumber" name="197" href="#197">197</a> <span class="jxr_string">"last row (%s) is configured less than first row (%s)"</span>, |
| <a class="jxr_linenumber" name="198" href="#198">198</a> Bytes.toStringBinary(lastRowBytes), |
| <a class="jxr_linenumber" name="199" href="#199">199</a> Bytes.toStringBinary(firstRowBytes)); |
| <a class="jxr_linenumber" name="200" href="#200">200</a> |
| <a class="jxr_linenumber" name="201" href="#201">201</a> byte[][] splits = Bytes.split(firstRowBytes, lastRowBytes, <strong class="jxr_keyword">true</strong>, |
| <a class="jxr_linenumber" name="202" href="#202">202</a> numRegions - 1); |
| <a class="jxr_linenumber" name="203" href="#203">203</a> Preconditions.checkState(splits != <strong class="jxr_keyword">null</strong>, |
| <a class="jxr_linenumber" name="204" href="#204">204</a> <span class="jxr_string">"Could not split region with given user input: "</span> + <strong class="jxr_keyword">this</strong>); |
| <a class="jxr_linenumber" name="205" href="#205">205</a> |
| <a class="jxr_linenumber" name="206" href="#206">206</a> <em class="jxr_comment">// remove endpoints, which are included in the splits list</em> |
| <a class="jxr_linenumber" name="207" href="#207">207</a> <strong class="jxr_keyword">return</strong> Arrays.copyOfRange(splits, 1, splits.length - 1); |
| <a class="jxr_linenumber" name="208" href="#208">208</a> } |
| <a class="jxr_linenumber" name="209" href="#209">209</a> |
| <a class="jxr_linenumber" name="210" href="#210">210</a> @Override |
| <a class="jxr_linenumber" name="211" href="#211">211</a> <strong class="jxr_keyword">public</strong> byte[] firstRow() { |
| <a class="jxr_linenumber" name="212" href="#212">212</a> <strong class="jxr_keyword">return</strong> firstRowBytes; |
| <a class="jxr_linenumber" name="213" href="#213">213</a> } |
| <a class="jxr_linenumber" name="214" href="#214">214</a> |
| <a class="jxr_linenumber" name="215" href="#215">215</a> @Override |
| <a class="jxr_linenumber" name="216" href="#216">216</a> <strong class="jxr_keyword">public</strong> byte[] lastRow() { |
| <a class="jxr_linenumber" name="217" href="#217">217</a> <strong class="jxr_keyword">return</strong> lastRowBytes; |
| <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> @Override |
| <a class="jxr_linenumber" name="221" href="#221">221</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setFirstRow(String userInput) { |
| <a class="jxr_linenumber" name="222" href="#222">222</a> firstRowBytes = Bytes.toBytesBinary(userInput); |
| <a class="jxr_linenumber" name="223" href="#223">223</a> } |
| <a class="jxr_linenumber" name="224" href="#224">224</a> |
| <a class="jxr_linenumber" name="225" href="#225">225</a> @Override |
| <a class="jxr_linenumber" name="226" href="#226">226</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setLastRow(String userInput) { |
| <a class="jxr_linenumber" name="227" href="#227">227</a> lastRowBytes = Bytes.toBytesBinary(userInput); |
| <a class="jxr_linenumber" name="228" href="#228">228</a> } |
| <a class="jxr_linenumber" name="229" href="#229">229</a> |
| <a class="jxr_linenumber" name="230" href="#230">230</a> @Override |
| <a class="jxr_linenumber" name="231" href="#231">231</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setFirstRow(byte[] userInput) { |
| <a class="jxr_linenumber" name="232" href="#232">232</a> firstRowBytes = userInput; |
| <a class="jxr_linenumber" name="233" href="#233">233</a> } |
| <a class="jxr_linenumber" name="234" href="#234">234</a> |
| <a class="jxr_linenumber" name="235" href="#235">235</a> @Override |
| <a class="jxr_linenumber" name="236" href="#236">236</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setLastRow(byte[] userInput) { |
| <a class="jxr_linenumber" name="237" href="#237">237</a> lastRowBytes = userInput; |
| <a class="jxr_linenumber" name="238" href="#238">238</a> } |
| <a class="jxr_linenumber" name="239" href="#239">239</a> |
| <a class="jxr_linenumber" name="240" href="#240">240</a> @Override |
| <a class="jxr_linenumber" name="241" href="#241">241</a> <strong class="jxr_keyword">public</strong> byte[] strToRow(String input) { |
| <a class="jxr_linenumber" name="242" href="#242">242</a> <strong class="jxr_keyword">return</strong> Bytes.toBytesBinary(input); |
| <a class="jxr_linenumber" name="243" href="#243">243</a> } |
| <a class="jxr_linenumber" name="244" href="#244">244</a> |
| <a class="jxr_linenumber" name="245" href="#245">245</a> @Override |
| <a class="jxr_linenumber" name="246" href="#246">246</a> <strong class="jxr_keyword">public</strong> String rowToStr(byte[] row) { |
| <a class="jxr_linenumber" name="247" href="#247">247</a> <strong class="jxr_keyword">return</strong> Bytes.toStringBinary(row); |
| <a class="jxr_linenumber" name="248" href="#248">248</a> } |
| <a class="jxr_linenumber" name="249" href="#249">249</a> |
| <a class="jxr_linenumber" name="250" href="#250">250</a> @Override |
| <a class="jxr_linenumber" name="251" href="#251">251</a> <strong class="jxr_keyword">public</strong> String separator() { |
| <a class="jxr_linenumber" name="252" href="#252">252</a> <strong class="jxr_keyword">return</strong> <span class="jxr_string">","</span>; |
| <a class="jxr_linenumber" name="253" href="#253">253</a> } |
| <a class="jxr_linenumber" name="254" href="#254">254</a> |
| <a class="jxr_linenumber" name="255" href="#255">255</a> @Override |
| <a class="jxr_linenumber" name="256" href="#256">256</a> <strong class="jxr_keyword">public</strong> String toString() { |
| <a class="jxr_linenumber" name="257" href="#257">257</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.getClass().getSimpleName() + <span class="jxr_string">" ["</span> + rowToStr(firstRow()) |
| <a class="jxr_linenumber" name="258" href="#258">258</a> + <span class="jxr_string">","</span> + rowToStr(lastRow()) + <span class="jxr_string">"]"</span>; |
| <a class="jxr_linenumber" name="259" href="#259">259</a> } |
| <a class="jxr_linenumber" name="260" href="#260">260</a> } |
| <a class="jxr_linenumber" name="261" href="#261">261</a> } |
| </pre> |
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