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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.mapreduce;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.DataInput;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.DataOutput;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Arrays;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.client.Scan;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.io.Writable;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.io.WritableUtils;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.mapreduce.InputSplit;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.slf4j.Logger;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35">/**</span> |
| <span class="source-line-no">036</span><span id="line-36"> * A table split corresponds to a key range (low, high) and an optional scanner. All references to</span> |
| <span class="source-line-no">037</span><span id="line-37"> * row below refer to the key of the row.</span> |
| <span class="source-line-no">038</span><span id="line-38"> */</span> |
| <span class="source-line-no">039</span><span id="line-39">@InterfaceAudience.Public</span> |
| <span class="source-line-no">040</span><span id="line-40">public class TableSplit extends InputSplit implements Writable, Comparable<TableSplit> {</span> |
| <span class="source-line-no">041</span><span id="line-41"> /** @deprecated LOG variable would be made private. fix in hbase 3.0 */</span> |
| <span class="source-line-no">042</span><span id="line-42"> @Deprecated</span> |
| <span class="source-line-no">043</span><span id="line-43"> public static final Logger LOG = LoggerFactory.getLogger(TableSplit.class);</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> // should be < 0 (@see #readFields(DataInput))</span> |
| <span class="source-line-no">046</span><span id="line-46"> // version 1 supports Scan data member</span> |
| <span class="source-line-no">047</span><span id="line-47"> enum Version {</span> |
| <span class="source-line-no">048</span><span id="line-48"> UNVERSIONED(0),</span> |
| <span class="source-line-no">049</span><span id="line-49"> // Initial number we put on TableSplit when we introduced versioning.</span> |
| <span class="source-line-no">050</span><span id="line-50"> INITIAL(-1),</span> |
| <span class="source-line-no">051</span><span id="line-51"> // Added an encoded region name field for easier identification of split -> region</span> |
| <span class="source-line-no">052</span><span id="line-52"> WITH_ENCODED_REGION_NAME(-2);</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> final int code;</span> |
| <span class="source-line-no">055</span><span id="line-55"> static final Version[] byCode;</span> |
| <span class="source-line-no">056</span><span id="line-56"> static {</span> |
| <span class="source-line-no">057</span><span id="line-57"> byCode = Version.values();</span> |
| <span class="source-line-no">058</span><span id="line-58"> for (int i = 0; i < byCode.length; i++) {</span> |
| <span class="source-line-no">059</span><span id="line-59"> if (byCode[i].code != -1 * i) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> throw new AssertionError("Values in this enum should be descending by one");</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"> }</span> |
| <span class="source-line-no">064</span><span id="line-64"></span> |
| <span class="source-line-no">065</span><span id="line-65"> Version(int code) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> this.code = code;</span> |
| <span class="source-line-no">067</span><span id="line-67"> }</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> boolean atLeast(Version other) {</span> |
| <span class="source-line-no">070</span><span id="line-70"> return code <= other.code;</span> |
| <span class="source-line-no">071</span><span id="line-71"> }</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> static Version fromCode(int code) {</span> |
| <span class="source-line-no">074</span><span id="line-74"> return byCode[code * -1];</span> |
| <span class="source-line-no">075</span><span id="line-75"> }</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> private static final Version VERSION = Version.WITH_ENCODED_REGION_NAME;</span> |
| <span class="source-line-no">079</span><span id="line-79"> private TableName tableName;</span> |
| <span class="source-line-no">080</span><span id="line-80"> private byte[] startRow;</span> |
| <span class="source-line-no">081</span><span id="line-81"> private byte[] endRow;</span> |
| <span class="source-line-no">082</span><span id="line-82"> private String regionLocation;</span> |
| <span class="source-line-no">083</span><span id="line-83"> private String encodedRegionName = "";</span> |
| <span class="source-line-no">084</span><span id="line-84"></span> |
| <span class="source-line-no">085</span><span id="line-85"> /**</span> |
| <span class="source-line-no">086</span><span id="line-86"> * The scan object may be null but the serialized form of scan is never null or empty since we</span> |
| <span class="source-line-no">087</span><span id="line-87"> * serialize the scan object with default values then. Having no scanner in TableSplit doesn't</span> |
| <span class="source-line-no">088</span><span id="line-88"> * necessarily mean there is no scanner for mapreduce job, it just means that we do not need to</span> |
| <span class="source-line-no">089</span><span id="line-89"> * set it for each split. For example, it is not required to have a scan object for</span> |
| <span class="source-line-no">090</span><span id="line-90"> * {@link org.apache.hadoop.hbase.mapred.TableInputFormatBase} since we use the scan from the job</span> |
| <span class="source-line-no">091</span><span id="line-91"> * conf and scanner is supposed to be same for all the splits of table.</span> |
| <span class="source-line-no">092</span><span id="line-92"> */</span> |
| <span class="source-line-no">093</span><span id="line-93"> private String scan = ""; // stores the serialized form of the Scan</span> |
| <span class="source-line-no">094</span><span id="line-94"> private long length; // Contains estimation of region size in bytes</span> |
| <span class="source-line-no">095</span><span id="line-95"></span> |
| <span class="source-line-no">096</span><span id="line-96"> /** Default constructor. */</span> |
| <span class="source-line-no">097</span><span id="line-97"> public TableSplit() {</span> |
| <span class="source-line-no">098</span><span id="line-98"> this((TableName) null, null, HConstants.EMPTY_BYTE_ARRAY, HConstants.EMPTY_BYTE_ARRAY, "");</span> |
| <span class="source-line-no">099</span><span id="line-99"> }</span> |
| <span class="source-line-no">100</span><span id="line-100"></span> |
| <span class="source-line-no">101</span><span id="line-101"> /**</span> |
| <span class="source-line-no">102</span><span id="line-102"> * Creates a new instance while assigning all variables. Length of region is set to 0 Encoded name</span> |
| <span class="source-line-no">103</span><span id="line-103"> * of the region is set to blank</span> |
| <span class="source-line-no">104</span><span id="line-104"> * @param tableName The name of the current table.</span> |
| <span class="source-line-no">105</span><span id="line-105"> * @param scan The scan associated with this split.</span> |
| <span class="source-line-no">106</span><span id="line-106"> * @param startRow The start row of the split.</span> |
| <span class="source-line-no">107</span><span id="line-107"> * @param endRow The end row of the split.</span> |
| <span class="source-line-no">108</span><span id="line-108"> * @param location The location of the region.</span> |
| <span class="source-line-no">109</span><span id="line-109"> */</span> |
| <span class="source-line-no">110</span><span id="line-110"> public TableSplit(TableName tableName, Scan scan, byte[] startRow, byte[] endRow,</span> |
| <span class="source-line-no">111</span><span id="line-111"> final String location) {</span> |
| <span class="source-line-no">112</span><span id="line-112"> this(tableName, scan, startRow, endRow, location, 0L);</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"></span> |
| <span class="source-line-no">115</span><span id="line-115"> /**</span> |
| <span class="source-line-no">116</span><span id="line-116"> * Creates a new instance while assigning all variables. Encoded name of region is set to blank</span> |
| <span class="source-line-no">117</span><span id="line-117"> * @param tableName The name of the current table.</span> |
| <span class="source-line-no">118</span><span id="line-118"> * @param scan The scan associated with this split.</span> |
| <span class="source-line-no">119</span><span id="line-119"> * @param startRow The start row of the split.</span> |
| <span class="source-line-no">120</span><span id="line-120"> * @param endRow The end row of the split.</span> |
| <span class="source-line-no">121</span><span id="line-121"> * @param location The location of the region.</span> |
| <span class="source-line-no">122</span><span id="line-122"> */</span> |
| <span class="source-line-no">123</span><span id="line-123"> public TableSplit(TableName tableName, Scan scan, byte[] startRow, byte[] endRow,</span> |
| <span class="source-line-no">124</span><span id="line-124"> final String location, long length) {</span> |
| <span class="source-line-no">125</span><span id="line-125"> this(tableName, scan, startRow, endRow, location, "", length);</span> |
| <span class="source-line-no">126</span><span id="line-126"> }</span> |
| <span class="source-line-no">127</span><span id="line-127"></span> |
| <span class="source-line-no">128</span><span id="line-128"> /**</span> |
| <span class="source-line-no">129</span><span id="line-129"> * Creates a new instance while assigning all variables.</span> |
| <span class="source-line-no">130</span><span id="line-130"> * @param tableName The name of the current table.</span> |
| <span class="source-line-no">131</span><span id="line-131"> * @param scan The scan associated with this split.</span> |
| <span class="source-line-no">132</span><span id="line-132"> * @param startRow The start row of the split.</span> |
| <span class="source-line-no">133</span><span id="line-133"> * @param endRow The end row of the split.</span> |
| <span class="source-line-no">134</span><span id="line-134"> * @param encodedRegionName The region ID.</span> |
| <span class="source-line-no">135</span><span id="line-135"> * @param location The location of the region.</span> |
| <span class="source-line-no">136</span><span id="line-136"> */</span> |
| <span class="source-line-no">137</span><span id="line-137"> public TableSplit(TableName tableName, Scan scan, byte[] startRow, byte[] endRow,</span> |
| <span class="source-line-no">138</span><span id="line-138"> final String location, final String encodedRegionName, long length) {</span> |
| <span class="source-line-no">139</span><span id="line-139"> this.tableName = tableName;</span> |
| <span class="source-line-no">140</span><span id="line-140"> try {</span> |
| <span class="source-line-no">141</span><span id="line-141"> this.scan = (null == scan) ? "" : TableMapReduceUtil.convertScanToString(scan);</span> |
| <span class="source-line-no">142</span><span id="line-142"> } catch (IOException e) {</span> |
| <span class="source-line-no">143</span><span id="line-143"> LOG.warn("Failed to convert Scan to String", e);</span> |
| <span class="source-line-no">144</span><span id="line-144"> }</span> |
| <span class="source-line-no">145</span><span id="line-145"> this.startRow = startRow;</span> |
| <span class="source-line-no">146</span><span id="line-146"> this.endRow = endRow;</span> |
| <span class="source-line-no">147</span><span id="line-147"> this.regionLocation = location;</span> |
| <span class="source-line-no">148</span><span id="line-148"> this.encodedRegionName = encodedRegionName;</span> |
| <span class="source-line-no">149</span><span id="line-149"> this.length = length;</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"></span> |
| <span class="source-line-no">152</span><span id="line-152"> /**</span> |
| <span class="source-line-no">153</span><span id="line-153"> * Creates a new instance without a scanner. Length of region is set to 0</span> |
| <span class="source-line-no">154</span><span id="line-154"> * @param tableName The name of the current table.</span> |
| <span class="source-line-no">155</span><span id="line-155"> * @param startRow The start row of the split.</span> |
| <span class="source-line-no">156</span><span id="line-156"> * @param endRow The end row of the split.</span> |
| <span class="source-line-no">157</span><span id="line-157"> * @param location The location of the region.</span> |
| <span class="source-line-no">158</span><span id="line-158"> */</span> |
| <span class="source-line-no">159</span><span id="line-159"> public TableSplit(TableName tableName, byte[] startRow, byte[] endRow, final String location) {</span> |
| <span class="source-line-no">160</span><span id="line-160"> this(tableName, null, startRow, endRow, location);</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"></span> |
| <span class="source-line-no">163</span><span id="line-163"> /**</span> |
| <span class="source-line-no">164</span><span id="line-164"> * Creates a new instance without a scanner.</span> |
| <span class="source-line-no">165</span><span id="line-165"> * @param tableName The name of the current table.</span> |
| <span class="source-line-no">166</span><span id="line-166"> * @param startRow The start row of the split.</span> |
| <span class="source-line-no">167</span><span id="line-167"> * @param endRow The end row of the split.</span> |
| <span class="source-line-no">168</span><span id="line-168"> * @param location The location of the region.</span> |
| <span class="source-line-no">169</span><span id="line-169"> * @param length Size of region in bytes</span> |
| <span class="source-line-no">170</span><span id="line-170"> */</span> |
| <span class="source-line-no">171</span><span id="line-171"> public TableSplit(TableName tableName, byte[] startRow, byte[] endRow, final String location,</span> |
| <span class="source-line-no">172</span><span id="line-172"> long length) {</span> |
| <span class="source-line-no">173</span><span id="line-173"> this(tableName, null, startRow, endRow, location, length);</span> |
| <span class="source-line-no">174</span><span id="line-174"> }</span> |
| <span class="source-line-no">175</span><span id="line-175"></span> |
| <span class="source-line-no">176</span><span id="line-176"> /**</span> |
| <span class="source-line-no">177</span><span id="line-177"> * Returns a Scan object from the stored string representation.</span> |
| <span class="source-line-no">178</span><span id="line-178"> * @return Returns a Scan object based on the stored scanner.</span> |
| <span class="source-line-no">179</span><span id="line-179"> * @throws IOException throws IOException if deserialization fails</span> |
| <span class="source-line-no">180</span><span id="line-180"> */</span> |
| <span class="source-line-no">181</span><span id="line-181"> public Scan getScan() throws IOException {</span> |
| <span class="source-line-no">182</span><span id="line-182"> return TableMapReduceUtil.convertStringToScan(this.scan);</span> |
| <span class="source-line-no">183</span><span id="line-183"> }</span> |
| <span class="source-line-no">184</span><span id="line-184"></span> |
| <span class="source-line-no">185</span><span id="line-185"> /**</span> |
| <span class="source-line-no">186</span><span id="line-186"> * Returns a scan string</span> |
| <span class="source-line-no">187</span><span id="line-187"> * @return scan as string. Should be noted that this is not same as getScan().toString() because</span> |
| <span class="source-line-no">188</span><span id="line-188"> * Scan object will have the default values when empty scan string is deserialized. Thus,</span> |
| <span class="source-line-no">189</span><span id="line-189"> * getScan().toString() can never be empty</span> |
| <span class="source-line-no">190</span><span id="line-190"> */</span> |
| <span class="source-line-no">191</span><span id="line-191"> @InterfaceAudience.Private</span> |
| <span class="source-line-no">192</span><span id="line-192"> public String getScanAsString() {</span> |
| <span class="source-line-no">193</span><span id="line-193"> return this.scan;</span> |
| <span class="source-line-no">194</span><span id="line-194"> }</span> |
| <span class="source-line-no">195</span><span id="line-195"></span> |
| <span class="source-line-no">196</span><span id="line-196"> /**</span> |
| <span class="source-line-no">197</span><span id="line-197"> * Returns the table name converted to a byte array.</span> |
| <span class="source-line-no">198</span><span id="line-198"> * @see #getTable()</span> |
| <span class="source-line-no">199</span><span id="line-199"> * @return The table name.</span> |
| <span class="source-line-no">200</span><span id="line-200"> */</span> |
| <span class="source-line-no">201</span><span id="line-201"> public byte[] getTableName() {</span> |
| <span class="source-line-no">202</span><span id="line-202"> return tableName.getName();</span> |
| <span class="source-line-no">203</span><span id="line-203"> }</span> |
| <span class="source-line-no">204</span><span id="line-204"></span> |
| <span class="source-line-no">205</span><span id="line-205"> /**</span> |
| <span class="source-line-no">206</span><span id="line-206"> * Returns the table name.</span> |
| <span class="source-line-no">207</span><span id="line-207"> * @return The table name.</span> |
| <span class="source-line-no">208</span><span id="line-208"> */</span> |
| <span class="source-line-no">209</span><span id="line-209"> public TableName getTable() {</span> |
| <span class="source-line-no">210</span><span id="line-210"> // It is ugly that usually to get a TableName, the method is called getTableName. We can't do</span> |
| <span class="source-line-no">211</span><span id="line-211"> // that in here though because there was an existing getTableName in place already since</span> |
| <span class="source-line-no">212</span><span id="line-212"> // deprecated.</span> |
| <span class="source-line-no">213</span><span id="line-213"> return tableName;</span> |
| <span class="source-line-no">214</span><span id="line-214"> }</span> |
| <span class="source-line-no">215</span><span id="line-215"></span> |
| <span class="source-line-no">216</span><span id="line-216"> /**</span> |
| <span class="source-line-no">217</span><span id="line-217"> * Returns the start row.</span> |
| <span class="source-line-no">218</span><span id="line-218"> * @return The start row.</span> |
| <span class="source-line-no">219</span><span id="line-219"> */</span> |
| <span class="source-line-no">220</span><span id="line-220"> public byte[] getStartRow() {</span> |
| <span class="source-line-no">221</span><span id="line-221"> return startRow;</span> |
| <span class="source-line-no">222</span><span id="line-222"> }</span> |
| <span class="source-line-no">223</span><span id="line-223"></span> |
| <span class="source-line-no">224</span><span id="line-224"> /**</span> |
| <span class="source-line-no">225</span><span id="line-225"> * Returns the end row.</span> |
| <span class="source-line-no">226</span><span id="line-226"> * @return The end row.</span> |
| <span class="source-line-no">227</span><span id="line-227"> */</span> |
| <span class="source-line-no">228</span><span id="line-228"> public byte[] getEndRow() {</span> |
| <span class="source-line-no">229</span><span id="line-229"> return endRow;</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"></span> |
| <span class="source-line-no">232</span><span id="line-232"> /**</span> |
| <span class="source-line-no">233</span><span id="line-233"> * Returns the region location.</span> |
| <span class="source-line-no">234</span><span id="line-234"> * @return The region's location.</span> |
| <span class="source-line-no">235</span><span id="line-235"> */</span> |
| <span class="source-line-no">236</span><span id="line-236"> public String getRegionLocation() {</span> |
| <span class="source-line-no">237</span><span id="line-237"> return regionLocation;</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"></span> |
| <span class="source-line-no">240</span><span id="line-240"> /**</span> |
| <span class="source-line-no">241</span><span id="line-241"> * Returns the region's location as an array.</span> |
| <span class="source-line-no">242</span><span id="line-242"> * @return The array containing the region location.</span> |
| <span class="source-line-no">243</span><span id="line-243"> * @see org.apache.hadoop.mapreduce.InputSplit#getLocations()</span> |
| <span class="source-line-no">244</span><span id="line-244"> */</span> |
| <span class="source-line-no">245</span><span id="line-245"> @Override</span> |
| <span class="source-line-no">246</span><span id="line-246"> public String[] getLocations() {</span> |
| <span class="source-line-no">247</span><span id="line-247"> return new String[] { regionLocation };</span> |
| <span class="source-line-no">248</span><span id="line-248"> }</span> |
| <span class="source-line-no">249</span><span id="line-249"></span> |
| <span class="source-line-no">250</span><span id="line-250"> /**</span> |
| <span class="source-line-no">251</span><span id="line-251"> * Returns the region's encoded name.</span> |
| <span class="source-line-no">252</span><span id="line-252"> * @return The region's encoded name.</span> |
| <span class="source-line-no">253</span><span id="line-253"> */</span> |
| <span class="source-line-no">254</span><span id="line-254"> public String getEncodedRegionName() {</span> |
| <span class="source-line-no">255</span><span id="line-255"> return encodedRegionName;</span> |
| <span class="source-line-no">256</span><span id="line-256"> }</span> |
| <span class="source-line-no">257</span><span id="line-257"></span> |
| <span class="source-line-no">258</span><span id="line-258"> /**</span> |
| <span class="source-line-no">259</span><span id="line-259"> * Returns the length of the split.</span> |
| <span class="source-line-no">260</span><span id="line-260"> * @return The length of the split.</span> |
| <span class="source-line-no">261</span><span id="line-261"> * @see org.apache.hadoop.mapreduce.InputSplit#getLength()</span> |
| <span class="source-line-no">262</span><span id="line-262"> */</span> |
| <span class="source-line-no">263</span><span id="line-263"> @Override</span> |
| <span class="source-line-no">264</span><span id="line-264"> public long getLength() {</span> |
| <span class="source-line-no">265</span><span id="line-265"> return length;</span> |
| <span class="source-line-no">266</span><span id="line-266"> }</span> |
| <span class="source-line-no">267</span><span id="line-267"></span> |
| <span class="source-line-no">268</span><span id="line-268"> /**</span> |
| <span class="source-line-no">269</span><span id="line-269"> * Reads the values of each field.</span> |
| <span class="source-line-no">270</span><span id="line-270"> * @param in The input to read from.</span> |
| <span class="source-line-no">271</span><span id="line-271"> * @throws IOException When reading the input fails.</span> |
| <span class="source-line-no">272</span><span id="line-272"> */</span> |
| <span class="source-line-no">273</span><span id="line-273"> @Override</span> |
| <span class="source-line-no">274</span><span id="line-274"> public void readFields(DataInput in) throws IOException {</span> |
| <span class="source-line-no">275</span><span id="line-275"> Version version = Version.UNVERSIONED;</span> |
| <span class="source-line-no">276</span><span id="line-276"> // TableSplit was not versioned in the beginning.</span> |
| <span class="source-line-no">277</span><span id="line-277"> // In order to introduce it now, we make use of the fact</span> |
| <span class="source-line-no">278</span><span id="line-278"> // that tableName was written with Bytes.writeByteArray,</span> |
| <span class="source-line-no">279</span><span id="line-279"> // which encodes the array length as a vint which is >= 0.</span> |
| <span class="source-line-no">280</span><span id="line-280"> // Hence if the vint is >= 0 we have an old version and the vint</span> |
| <span class="source-line-no">281</span><span id="line-281"> // encodes the length of tableName.</span> |
| <span class="source-line-no">282</span><span id="line-282"> // If < 0 we just read the version and the next vint is the length.</span> |
| <span class="source-line-no">283</span><span id="line-283"> // @see Bytes#readByteArray(DataInput)</span> |
| <span class="source-line-no">284</span><span id="line-284"> int len = WritableUtils.readVInt(in);</span> |
| <span class="source-line-no">285</span><span id="line-285"> if (len < 0) {</span> |
| <span class="source-line-no">286</span><span id="line-286"> // what we just read was the version</span> |
| <span class="source-line-no">287</span><span id="line-287"> version = Version.fromCode(len);</span> |
| <span class="source-line-no">288</span><span id="line-288"> len = WritableUtils.readVInt(in);</span> |
| <span class="source-line-no">289</span><span id="line-289"> }</span> |
| <span class="source-line-no">290</span><span id="line-290"> byte[] tableNameBytes = new byte[len];</span> |
| <span class="source-line-no">291</span><span id="line-291"> in.readFully(tableNameBytes);</span> |
| <span class="source-line-no">292</span><span id="line-292"> tableName = TableName.valueOf(tableNameBytes);</span> |
| <span class="source-line-no">293</span><span id="line-293"> startRow = Bytes.readByteArray(in);</span> |
| <span class="source-line-no">294</span><span id="line-294"> endRow = Bytes.readByteArray(in);</span> |
| <span class="source-line-no">295</span><span id="line-295"> regionLocation = Bytes.toString(Bytes.readByteArray(in));</span> |
| <span class="source-line-no">296</span><span id="line-296"> if (version.atLeast(Version.INITIAL)) {</span> |
| <span class="source-line-no">297</span><span id="line-297"> scan = Bytes.toString(Bytes.readByteArray(in));</span> |
| <span class="source-line-no">298</span><span id="line-298"> }</span> |
| <span class="source-line-no">299</span><span id="line-299"> length = WritableUtils.readVLong(in);</span> |
| <span class="source-line-no">300</span><span id="line-300"> if (version.atLeast(Version.WITH_ENCODED_REGION_NAME)) {</span> |
| <span class="source-line-no">301</span><span id="line-301"> encodedRegionName = Bytes.toString(Bytes.readByteArray(in));</span> |
| <span class="source-line-no">302</span><span id="line-302"> }</span> |
| <span class="source-line-no">303</span><span id="line-303"> }</span> |
| <span class="source-line-no">304</span><span id="line-304"></span> |
| <span class="source-line-no">305</span><span id="line-305"> /**</span> |
| <span class="source-line-no">306</span><span id="line-306"> * Writes the field values to the output.</span> |
| <span class="source-line-no">307</span><span id="line-307"> * @param out The output to write to.</span> |
| <span class="source-line-no">308</span><span id="line-308"> * @throws IOException When writing the values to the output fails.</span> |
| <span class="source-line-no">309</span><span id="line-309"> */</span> |
| <span class="source-line-no">310</span><span id="line-310"> @Override</span> |
| <span class="source-line-no">311</span><span id="line-311"> public void write(DataOutput out) throws IOException {</span> |
| <span class="source-line-no">312</span><span id="line-312"> WritableUtils.writeVInt(out, VERSION.code);</span> |
| <span class="source-line-no">313</span><span id="line-313"> Bytes.writeByteArray(out, tableName.getName());</span> |
| <span class="source-line-no">314</span><span id="line-314"> Bytes.writeByteArray(out, startRow);</span> |
| <span class="source-line-no">315</span><span id="line-315"> Bytes.writeByteArray(out, endRow);</span> |
| <span class="source-line-no">316</span><span id="line-316"> Bytes.writeByteArray(out, Bytes.toBytes(regionLocation));</span> |
| <span class="source-line-no">317</span><span id="line-317"> Bytes.writeByteArray(out, Bytes.toBytes(scan));</span> |
| <span class="source-line-no">318</span><span id="line-318"> WritableUtils.writeVLong(out, length);</span> |
| <span class="source-line-no">319</span><span id="line-319"> Bytes.writeByteArray(out, Bytes.toBytes(encodedRegionName));</span> |
| <span class="source-line-no">320</span><span id="line-320"> }</span> |
| <span class="source-line-no">321</span><span id="line-321"></span> |
| <span class="source-line-no">322</span><span id="line-322"> /**</span> |
| <span class="source-line-no">323</span><span id="line-323"> * Returns the details about this instance as a string.</span> |
| <span class="source-line-no">324</span><span id="line-324"> * @return The values of this instance as a string.</span> |
| <span class="source-line-no">325</span><span id="line-325"> * @see java.lang.Object#toString()</span> |
| <span class="source-line-no">326</span><span id="line-326"> */</span> |
| <span class="source-line-no">327</span><span id="line-327"> @Override</span> |
| <span class="source-line-no">328</span><span id="line-328"> public String toString() {</span> |
| <span class="source-line-no">329</span><span id="line-329"> StringBuilder sb = new StringBuilder();</span> |
| <span class="source-line-no">330</span><span id="line-330"> sb.append("Split(");</span> |
| <span class="source-line-no">331</span><span id="line-331"> sb.append("tablename=").append(tableName);</span> |
| <span class="source-line-no">332</span><span id="line-332"> // null scan input is represented by ""</span> |
| <span class="source-line-no">333</span><span id="line-333"> String printScan = "";</span> |
| <span class="source-line-no">334</span><span id="line-334"> if (!scan.equals("")) {</span> |
| <span class="source-line-no">335</span><span id="line-335"> try {</span> |
| <span class="source-line-no">336</span><span id="line-336"> // get the real scan here in toString, not the Base64 string</span> |
| <span class="source-line-no">337</span><span id="line-337"> printScan = TableMapReduceUtil.convertStringToScan(scan).toString();</span> |
| <span class="source-line-no">338</span><span id="line-338"> } catch (IOException e) {</span> |
| <span class="source-line-no">339</span><span id="line-339"> printScan = "";</span> |
| <span class="source-line-no">340</span><span id="line-340"> }</span> |
| <span class="source-line-no">341</span><span id="line-341"> sb.append(", scan=").append(printScan);</span> |
| <span class="source-line-no">342</span><span id="line-342"> }</span> |
| <span class="source-line-no">343</span><span id="line-343"> sb.append(", startrow=").append(Bytes.toStringBinary(startRow));</span> |
| <span class="source-line-no">344</span><span id="line-344"> sb.append(", endrow=").append(Bytes.toStringBinary(endRow));</span> |
| <span class="source-line-no">345</span><span id="line-345"> sb.append(", regionLocation=").append(regionLocation);</span> |
| <span class="source-line-no">346</span><span id="line-346"> sb.append(", regionname=").append(encodedRegionName);</span> |
| <span class="source-line-no">347</span><span id="line-347"> sb.append(")");</span> |
| <span class="source-line-no">348</span><span id="line-348"> return sb.toString();</span> |
| <span class="source-line-no">349</span><span id="line-349"> }</span> |
| <span class="source-line-no">350</span><span id="line-350"></span> |
| <span class="source-line-no">351</span><span id="line-351"> /**</span> |
| <span class="source-line-no">352</span><span id="line-352"> * Compares this split against the given one.</span> |
| <span class="source-line-no">353</span><span id="line-353"> * @param split The split to compare to.</span> |
| <span class="source-line-no">354</span><span id="line-354"> * @return The result of the comparison.</span> |
| <span class="source-line-no">355</span><span id="line-355"> * @see java.lang.Comparable#compareTo(java.lang.Object)</span> |
| <span class="source-line-no">356</span><span id="line-356"> */</span> |
| <span class="source-line-no">357</span><span id="line-357"> @Override</span> |
| <span class="source-line-no">358</span><span id="line-358"> public int compareTo(TableSplit split) {</span> |
| <span class="source-line-no">359</span><span id="line-359"> // If The table name of the two splits is the same then compare start row</span> |
| <span class="source-line-no">360</span><span id="line-360"> // otherwise compare based on table names</span> |
| <span class="source-line-no">361</span><span id="line-361"> int tableNameComparison = getTable().compareTo(split.getTable());</span> |
| <span class="source-line-no">362</span><span id="line-362"> return tableNameComparison != 0</span> |
| <span class="source-line-no">363</span><span id="line-363"> ? tableNameComparison</span> |
| <span class="source-line-no">364</span><span id="line-364"> : Bytes.compareTo(getStartRow(), split.getStartRow());</span> |
| <span class="source-line-no">365</span><span id="line-365"> }</span> |
| <span class="source-line-no">366</span><span id="line-366"></span> |
| <span class="source-line-no">367</span><span id="line-367"> @Override</span> |
| <span class="source-line-no">368</span><span id="line-368"> public boolean equals(Object o) {</span> |
| <span class="source-line-no">369</span><span id="line-369"> if (o == null || !(o instanceof TableSplit)) {</span> |
| <span class="source-line-no">370</span><span id="line-370"> return false;</span> |
| <span class="source-line-no">371</span><span id="line-371"> }</span> |
| <span class="source-line-no">372</span><span id="line-372"> return tableName.equals(((TableSplit) o).tableName)</span> |
| <span class="source-line-no">373</span><span id="line-373"> && Bytes.equals(startRow, ((TableSplit) o).startRow)</span> |
| <span class="source-line-no">374</span><span id="line-374"> && Bytes.equals(endRow, ((TableSplit) o).endRow)</span> |
| <span class="source-line-no">375</span><span id="line-375"> && regionLocation.equals(((TableSplit) o).regionLocation);</span> |
| <span class="source-line-no">376</span><span id="line-376"> }</span> |
| <span class="source-line-no">377</span><span id="line-377"></span> |
| <span class="source-line-no">378</span><span id="line-378"> @Override</span> |
| <span class="source-line-no">379</span><span id="line-379"> public int hashCode() {</span> |
| <span class="source-line-no">380</span><span id="line-380"> int result = tableName != null ? tableName.hashCode() : 0;</span> |
| <span class="source-line-no">381</span><span id="line-381"> result = 31 * result + (scan != null ? scan.hashCode() : 0);</span> |
| <span class="source-line-no">382</span><span id="line-382"> result = 31 * result + (startRow != null ? Arrays.hashCode(startRow) : 0);</span> |
| <span class="source-line-no">383</span><span id="line-383"> result = 31 * result + (endRow != null ? Arrays.hashCode(endRow) : 0);</span> |
| <span class="source-line-no">384</span><span id="line-384"> result = 31 * result + (regionLocation != null ? regionLocation.hashCode() : 0);</span> |
| <span class="source-line-no">385</span><span id="line-385"> result = 31 * result + (encodedRegionName != null ? encodedRegionName.hashCode() : 0);</span> |
| <span class="source-line-no">386</span><span id="line-386"> return result;</span> |
| <span class="source-line-no">387</span><span id="line-387"> }</span> |
| <span class="source-line-no">388</span><span id="line-388">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
