| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.mapreduce;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.DataInput;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.DataOutput;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Arrays;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HConstants;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.TableName;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.io.Writable;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.io.WritableUtils;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.mapreduce.InputSplit;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.slf4j.Logger;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.slf4j.LoggerFactory;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span><a name="line.34"></a> |
| <span class="sourceLineNo">035</span>/**<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * A table split corresponds to a key range (low, high) and an optional scanner. All references to<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * row below refer to the key of the row.<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> */<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>@InterfaceAudience.Public<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>public class TableSplit extends InputSplit implements Writable, Comparable<TableSplit> {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /** @deprecated LOG variable would be made private. fix in hbase 3.0 */<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> @Deprecated<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> public static final Logger LOG = LoggerFactory.getLogger(TableSplit.class);<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> // should be < 0 (@see #readFields(DataInput))<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> // version 1 supports Scan data member<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> enum Version {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> UNVERSIONED(0),<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> // Initial number we put on TableSplit when we introduced versioning.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> INITIAL(-1),<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> // Added an encoded region name field for easier identification of split -> region<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> WITH_ENCODED_REGION_NAME(-2);<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> final int code;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> static final Version[] byCode;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> static {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> byCode = Version.values();<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> for (int i = 0; i < byCode.length; i++) {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> if (byCode[i].code != -1 * i) {<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> throw new AssertionError("Values in this enum should be descending by one");<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> }<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> }<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> Version(int code) {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> this.code = code;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> boolean atLeast(Version other) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> return code <= other.code;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> }<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> static Version fromCode(int code) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> return byCode[code * -1];<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> }<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private static final Version VERSION = Version.WITH_ENCODED_REGION_NAME;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private TableName tableName;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private byte[] startRow;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private byte[] endRow;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private String regionLocation;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private String encodedRegionName = "";<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> /**<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * The scan object may be null but the serialized form of scan is never null or empty since we<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * serialize the scan object with default values then. Having no scanner in TableSplit doesn't<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * necessarily mean there is no scanner for mapreduce job, it just means that we do not need to<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * set it for each split. For example, it is not required to have a scan object for<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * {@link org.apache.hadoop.hbase.mapred.TableInputFormatBase} since we use the scan from the job<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * conf and scanner is supposed to be same for all the splits of table.<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private String scan = ""; // stores the serialized form of the Scan<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> private long length; // Contains estimation of region size in bytes<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> /** Default constructor. */<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> public TableSplit() {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> this((TableName) null, null, HConstants.EMPTY_BYTE_ARRAY, HConstants.EMPTY_BYTE_ARRAY, "");<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> /**<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * Creates a new instance while assigning all variables. Length of region is set to 0 Encoded name<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * of the region is set to blank<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * @param tableName The name of the current table.<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * @param scan The scan associated with this split.<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * @param startRow The start row of the split.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> * @param endRow The end row of the split.<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * @param location The location of the region.<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> */<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> public TableSplit(TableName tableName, Scan scan, byte[] startRow, byte[] endRow,<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> final String location) {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> this(tableName, scan, startRow, endRow, location, 0L);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span><a name="line.114"></a> |
| <span class="sourceLineNo">115</span> /**<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * Creates a new instance while assigning all variables. Encoded name of region is set to blank<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @param tableName The name of the current table.<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * @param scan The scan associated with this split.<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * @param startRow The start row of the split.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> * @param endRow The end row of the split.<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * @param location The location of the region.<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> */<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> public TableSplit(TableName tableName, Scan scan, byte[] startRow, byte[] endRow,<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> final String location, long length) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> this(tableName, scan, startRow, endRow, location, "", length);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> }<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> /**<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * Creates a new instance while assigning all variables.<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * @param tableName The name of the current table.<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> * @param scan The scan associated with this split.<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * @param startRow The start row of the split.<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * @param endRow The end row of the split.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * @param encodedRegionName The region ID.<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @param location The location of the region.<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> */<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public TableSplit(TableName tableName, Scan scan, byte[] startRow, byte[] endRow,<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> final String location, final String encodedRegionName, long length) {<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> this.tableName = tableName;<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> try {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> this.scan = (null == scan) ? "" : TableMapReduceUtil.convertScanToString(scan);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> } catch (IOException e) {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> LOG.warn("Failed to convert Scan to String", e);<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> }<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> this.startRow = startRow;<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> this.endRow = endRow;<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> this.regionLocation = location;<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> this.encodedRegionName = encodedRegionName;<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> this.length = length;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> /**<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * Creates a new instance without a scanner. Length of region is set to 0<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * @param tableName The name of the current table.<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * @param startRow The start row of the split.<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * @param endRow The end row of the split.<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> * @param location The location of the region.<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> */<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> public TableSplit(TableName tableName, byte[] startRow, byte[] endRow, final String location) {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> this(tableName, null, startRow, endRow, location);<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> /**<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * Creates a new instance without a scanner.<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * @param tableName The name of the current table.<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * @param startRow The start row of the split.<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * @param endRow The end row of the split.<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * @param location The location of the region.<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * @param length Size of region in bytes<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> */<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> public TableSplit(TableName tableName, byte[] startRow, byte[] endRow, final String location,<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> long length) {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> this(tableName, null, startRow, endRow, location, length);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> /**<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * Returns a Scan object from the stored string representation.<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * @return Returns a Scan object based on the stored scanner.<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * @throws IOException throws IOException if deserialization fails<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> */<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> public Scan getScan() throws IOException {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> return TableMapReduceUtil.convertStringToScan(this.scan);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span><a name="line.184"></a> |
| <span class="sourceLineNo">185</span> /**<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * Returns a scan string<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * @return scan as string. Should be noted that this is not same as getScan().toString() because<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * Scan object will have the default values when empty scan string is deserialized. Thus,<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> * getScan().toString() can never be empty<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> */<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> @InterfaceAudience.Private<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> public String getScanAsString() {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> return this.scan;<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> /**<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * Returns the table name converted to a byte array.<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * @see #getTable()<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * @return The table name.<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> */<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> public byte[] getTableName() {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> return tableName.getName();<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span><a name="line.204"></a> |
| <span class="sourceLineNo">205</span> /**<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * Returns the table name.<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * @return The table name.<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> public TableName getTable() {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> // It is ugly that usually to get a TableName, the method is called getTableName. We can't do<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> // that in here though because there was an existing getTableName in place already since<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> // deprecated.<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> return tableName;<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span><a name="line.215"></a> |
| <span class="sourceLineNo">216</span> /**<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> * Returns the start row.<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> * @return The start row.<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> */<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> public byte[] getStartRow() {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> return startRow;<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> /**<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * Returns the end row.<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * @return The end row.<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> */<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> public byte[] getEndRow() {<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> return endRow;<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span><a name="line.231"></a> |
| <span class="sourceLineNo">232</span> /**<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> * Returns the region location.<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> * @return The region's location.<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> */<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> public String getRegionLocation() {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> return regionLocation;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> /**<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> * Returns the region's location as an array.<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> * @return The array containing the region location.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> * @see org.apache.hadoop.mapreduce.InputSplit#getLocations()<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> */<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> @Override<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> public String[] getLocations() {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> return new String[] { regionLocation };<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> /**<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * Returns the region's encoded name.<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * @return The region's encoded name.<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> */<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> public String getEncodedRegionName() {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> return encodedRegionName;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> /**<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * Returns the length of the split.<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * @return The length of the split.<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * @see org.apache.hadoop.mapreduce.InputSplit#getLength()<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> */<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> @Override<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> public long getLength() {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> return length;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> }<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> /**<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> * Reads the values of each field.<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> * @param in The input to read from.<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> * @throws IOException When reading the input fails.<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> */<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> @Override<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> public void readFields(DataInput in) throws IOException {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> Version version = Version.UNVERSIONED;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> // TableSplit was not versioned in the beginning.<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> // In order to introduce it now, we make use of the fact<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> // that tableName was written with Bytes.writeByteArray,<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> // which encodes the array length as a vint which is >= 0.<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> // Hence if the vint is >= 0 we have an old version and the vint<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> // encodes the length of tableName.<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> // If < 0 we just read the version and the next vint is the length.<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> // @see Bytes#readByteArray(DataInput)<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> int len = WritableUtils.readVInt(in);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> if (len < 0) {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> // what we just read was the version<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> version = Version.fromCode(len);<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> len = WritableUtils.readVInt(in);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> }<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> byte[] tableNameBytes = new byte[len];<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> in.readFully(tableNameBytes);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> tableName = TableName.valueOf(tableNameBytes);<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> startRow = Bytes.readByteArray(in);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> endRow = Bytes.readByteArray(in);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> regionLocation = Bytes.toString(Bytes.readByteArray(in));<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> if (version.atLeast(Version.INITIAL)) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> scan = Bytes.toString(Bytes.readByteArray(in));<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> length = WritableUtils.readVLong(in);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> if (version.atLeast(Version.WITH_ENCODED_REGION_NAME)) {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> encodedRegionName = Bytes.toString(Bytes.readByteArray(in));<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span><a name="line.304"></a> |
| <span class="sourceLineNo">305</span> /**<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> * Writes the field values to the output.<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> * @param out The output to write to.<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> * @throws IOException When writing the values to the output fails.<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> */<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> @Override<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> public void write(DataOutput out) throws IOException {<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> WritableUtils.writeVInt(out, VERSION.code);<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> Bytes.writeByteArray(out, tableName.getName());<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> Bytes.writeByteArray(out, startRow);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> Bytes.writeByteArray(out, endRow);<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> Bytes.writeByteArray(out, Bytes.toBytes(regionLocation));<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> Bytes.writeByteArray(out, Bytes.toBytes(scan));<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> WritableUtils.writeVLong(out, length);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> Bytes.writeByteArray(out, Bytes.toBytes(encodedRegionName));<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> }<a name="line.320"></a> |
| <span class="sourceLineNo">321</span><a name="line.321"></a> |
| <span class="sourceLineNo">322</span> /**<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * Returns the details about this instance as a string.<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> * @return The values of this instance as a string.<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> * @see java.lang.Object#toString()<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> */<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> @Override<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> public String toString() {<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> StringBuilder sb = new StringBuilder();<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> sb.append("Split(");<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> sb.append("tablename=").append(tableName);<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> // null scan input is represented by ""<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> String printScan = "";<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> if (!scan.equals("")) {<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> try {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> // get the real scan here in toString, not the Base64 string<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> printScan = TableMapReduceUtil.convertStringToScan(scan).toString();<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> } catch (IOException e) {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> printScan = "";<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> }<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> sb.append(", scan=").append(printScan);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> }<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> sb.append(", startrow=").append(Bytes.toStringBinary(startRow));<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> sb.append(", endrow=").append(Bytes.toStringBinary(endRow));<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> sb.append(", regionLocation=").append(regionLocation);<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> sb.append(", regionname=").append(encodedRegionName);<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> sb.append(")");<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> return sb.toString();<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> }<a name="line.349"></a> |
| <span class="sourceLineNo">350</span><a name="line.350"></a> |
| <span class="sourceLineNo">351</span> /**<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> * Compares this split against the given one.<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> * @param split The split to compare to.<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> * @return The result of the comparison.<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> * @see java.lang.Comparable#compareTo(java.lang.Object)<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> */<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> @Override<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> public int compareTo(TableSplit split) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> // If The table name of the two splits is the same then compare start row<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> // otherwise compare based on table names<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> int tableNameComparison = getTable().compareTo(split.getTable());<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> return tableNameComparison != 0<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> ? tableNameComparison<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> : Bytes.compareTo(getStartRow(), split.getStartRow());<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> }<a name="line.365"></a> |
| <span class="sourceLineNo">366</span><a name="line.366"></a> |
| <span class="sourceLineNo">367</span> @Override<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> public boolean equals(Object o) {<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> if (o == null || !(o instanceof TableSplit)) {<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> return false;<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> }<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> return tableName.equals(((TableSplit) o).tableName)<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> && Bytes.equals(startRow, ((TableSplit) o).startRow)<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> && Bytes.equals(endRow, ((TableSplit) o).endRow)<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> && regionLocation.equals(((TableSplit) o).regionLocation);<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> @Override<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> public int hashCode() {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> int result = tableName != null ? tableName.hashCode() : 0;<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> result = 31 * result + (scan != null ? scan.hashCode() : 0);<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> result = 31 * result + (startRow != null ? Arrays.hashCode(startRow) : 0);<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> result = 31 * result + (endRow != null ? Arrays.hashCode(endRow) : 0);<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> result = 31 * result + (regionLocation != null ? regionLocation.hashCode() : 0);<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> result = 31 * result + (encodedRegionName != null ? encodedRegionName.hashCode() : 0);<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> return result;<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span>}<a name="line.388"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
