http://git-wip-us.apache.org/repos/asf/hbase-site/blob/82166ec2/apidocs/src-html/org/apache/hadoop/hbase/client/TableSnapshotScanner.html ---------------------------------------------------------------------- diff --git a/apidocs/src-html/org/apache/hadoop/hbase/client/TableSnapshotScanner.html b/apidocs/src-html/org/apache/hadoop/hbase/client/TableSnapshotScanner.html deleted file mode 100644 index 9866b59..0000000 --- a/apidocs/src-html/org/apache/hadoop/hbase/client/TableSnapshotScanner.html +++ /dev/null @@ -1,264 +0,0 @@ -<!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><a name="line.18"></a> -<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.client;<a name="line.19"></a> -<span class="sourceLineNo">020</span><a name="line.20"></a> -<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import java.util.Collections;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import java.util.UUID;<a name="line.25"></a> -<span class="sourceLineNo">026</span><a name="line.26"></a> -<span class="sourceLineNo">027</span>import org.apache.commons.logging.Log;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import org.apache.commons.logging.LogFactory;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import org.apache.hadoop.conf.Configuration;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import org.apache.hadoop.fs.FileSystem;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.Path;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.36"></a> -<span class="sourceLineNo">037</span><a name="line.37"></a> -<span class="sourceLineNo">038</span>/**<a name="line.38"></a> -<span class="sourceLineNo">039</span> * A Scanner which performs a scan over snapshot files. Using this class requires copying the<a name="line.39"></a> -<span class="sourceLineNo">040</span> * snapshot to a temporary empty directory, which will copy the snapshot reference files into that<a name="line.40"></a> -<span class="sourceLineNo">041</span> * directory. Actual data files are not copied.<a name="line.41"></a> -<span class="sourceLineNo">042</span> *<a name="line.42"></a> -<span class="sourceLineNo">043</span> * <p><a name="line.43"></a> -<span class="sourceLineNo">044</span> * This also allows one to run the scan from an<a name="line.44"></a> -<span class="sourceLineNo">045</span> * online or offline hbase cluster. The snapshot files can be exported by using the<a name="line.45"></a> -<span class="sourceLineNo">046</span> * org.apache.hadoop.hbase.snapshot.ExportSnapshot tool,<a name="line.46"></a> -<span class="sourceLineNo">047</span> * to a pure-hdfs cluster, and this scanner can be used to<a name="line.47"></a> -<span class="sourceLineNo">048</span> * run the scan directly over the snapshot files. The snapshot should not be deleted while there<a name="line.48"></a> -<span class="sourceLineNo">049</span> * are open scanners reading from snapshot files.<a name="line.49"></a> -<span class="sourceLineNo">050</span> *<a name="line.50"></a> -<span class="sourceLineNo">051</span> * <p><a name="line.51"></a> -<span class="sourceLineNo">052</span> * An internal RegionScanner is used to execute the {@link Scan} obtained<a name="line.52"></a> -<span class="sourceLineNo">053</span> * from the user for each region in the snapshot.<a name="line.53"></a> -<span class="sourceLineNo">054</span> * <p><a name="line.54"></a> -<span class="sourceLineNo">055</span> * HBase owns all the data and snapshot files on the filesystem. Only the HBase user can read from<a name="line.55"></a> -<span class="sourceLineNo">056</span> * snapshot files and data files. HBase also enforces security because all the requests are handled<a name="line.56"></a> -<span class="sourceLineNo">057</span> * by the server layer, and the user cannot read from the data files directly. To read from snapshot<a name="line.57"></a> -<span class="sourceLineNo">058</span> * files directly from the file system, the user who is running the MR job must have sufficient<a name="line.58"></a> -<span class="sourceLineNo">059</span> * permissions to access snapshot and reference files. This means that to run mapreduce over<a name="line.59"></a> -<span class="sourceLineNo">060</span> * snapshot files, the job has to be run as the HBase user or the user must have group or other<a name="line.60"></a> -<span class="sourceLineNo">061</span> * priviledges in the filesystem (See HBASE-8369). Note that, given other users access to read from<a name="line.61"></a> -<span class="sourceLineNo">062</span> * snapshot/data files will completely circumvent the access control enforced by HBase.<a name="line.62"></a> -<span class="sourceLineNo">063</span> * See org.apache.hadoop.hbase.mapreduce.TableSnapshotInputFormat.<a name="line.63"></a> -<span class="sourceLineNo">064</span> */<a name="line.64"></a> -<span class="sourceLineNo">065</span>@InterfaceAudience.Public<a name="line.65"></a> -<span class="sourceLineNo">066</span>public class TableSnapshotScanner extends AbstractClientScanner {<a name="line.66"></a> -<span class="sourceLineNo">067</span><a name="line.67"></a> -<span class="sourceLineNo">068</span> private static final Log LOG = LogFactory.getLog(TableSnapshotScanner.class);<a name="line.68"></a> -<span class="sourceLineNo">069</span><a name="line.69"></a> -<span class="sourceLineNo">070</span> private Configuration conf;<a name="line.70"></a> -<span class="sourceLineNo">071</span> private String snapshotName;<a name="line.71"></a> -<span class="sourceLineNo">072</span> private FileSystem fs;<a name="line.72"></a> -<span class="sourceLineNo">073</span> private Path rootDir;<a name="line.73"></a> -<span class="sourceLineNo">074</span> private Path restoreDir;<a name="line.74"></a> -<span class="sourceLineNo">075</span> private Scan scan;<a name="line.75"></a> -<span class="sourceLineNo">076</span> private ArrayList<HRegionInfo> regions;<a name="line.76"></a> -<span class="sourceLineNo">077</span> private TableDescriptor htd;<a name="line.77"></a> -<span class="sourceLineNo">078</span><a name="line.78"></a> -<span class="sourceLineNo">079</span> private ClientSideRegionScanner currentRegionScanner = null;<a name="line.79"></a> -<span class="sourceLineNo">080</span> private int currentRegion = -1;<a name="line.80"></a> -<span class="sourceLineNo">081</span><a name="line.81"></a> -<span class="sourceLineNo">082</span> /**<a name="line.82"></a> -<span class="sourceLineNo">083</span> * Creates a TableSnapshotScanner.<a name="line.83"></a> -<span class="sourceLineNo">084</span> * @param conf the configuration<a name="line.84"></a> -<span class="sourceLineNo">085</span> * @param restoreDir a temporary directory to copy the snapshot files into. Current user should<a name="line.85"></a> -<span class="sourceLineNo">086</span> * have write permissions to this directory, and this should not be a subdirectory of rootdir.<a name="line.86"></a> -<span class="sourceLineNo">087</span> * The scanner deletes the contents of the directory once the scanner is closed.<a name="line.87"></a> -<span class="sourceLineNo">088</span> * @param snapshotName the name of the snapshot to read from<a name="line.88"></a> -<span class="sourceLineNo">089</span> * @param scan a Scan representing scan parameters<a name="line.89"></a> -<span class="sourceLineNo">090</span> * @throws IOException in case of error<a name="line.90"></a> -<span class="sourceLineNo">091</span> */<a name="line.91"></a> -<span class="sourceLineNo">092</span> public TableSnapshotScanner(Configuration conf, Path restoreDir,<a name="line.92"></a> -<span class="sourceLineNo">093</span> String snapshotName, Scan scan) throws IOException {<a name="line.93"></a> -<span class="sourceLineNo">094</span> this(conf, FSUtils.getRootDir(conf), restoreDir, snapshotName, scan);<a name="line.94"></a> -<span class="sourceLineNo">095</span> }<a name="line.95"></a> -<span class="sourceLineNo">096</span><a name="line.96"></a> -<span class="sourceLineNo">097</span> /**<a name="line.97"></a> -<span class="sourceLineNo">098</span> * Creates a TableSnapshotScanner.<a name="line.98"></a> -<span class="sourceLineNo">099</span> * @param conf the configuration<a name="line.99"></a> -<span class="sourceLineNo">100</span> * @param rootDir root directory for HBase.<a name="line.100"></a> -<span class="sourceLineNo">101</span> * @param restoreDir a temporary directory to copy the snapshot files into. Current user should<a name="line.101"></a> -<span class="sourceLineNo">102</span> * have write permissions to this directory, and this should not be a subdirectory of rootdir.<a name="line.102"></a> -<span class="sourceLineNo">103</span> * The scanner deletes the contents of the directory once the scanner is closed.<a name="line.103"></a> -<span class="sourceLineNo">104</span> * @param snapshotName the name of the snapshot to read from<a name="line.104"></a> -<span class="sourceLineNo">105</span> * @param scan a Scan representing scan parameters<a name="line.105"></a> -<span class="sourceLineNo">106</span> * @throws IOException in case of error<a name="line.106"></a> -<span class="sourceLineNo">107</span> */<a name="line.107"></a> -<span class="sourceLineNo">108</span> public TableSnapshotScanner(Configuration conf, Path rootDir,<a name="line.108"></a> -<span class="sourceLineNo">109</span> Path restoreDir, String snapshotName, Scan scan) throws IOException {<a name="line.109"></a> -<span class="sourceLineNo">110</span> this.conf = conf;<a name="line.110"></a> -<span class="sourceLineNo">111</span> this.snapshotName = snapshotName;<a name="line.111"></a> -<span class="sourceLineNo">112</span> this.rootDir = rootDir;<a name="line.112"></a> -<span class="sourceLineNo">113</span> // restoreDir will be deleted in close(), use a unique sub directory<a name="line.113"></a> -<span class="sourceLineNo">114</span> this.restoreDir = new Path(restoreDir, UUID.randomUUID().toString());<a name="line.114"></a> -<span class="sourceLineNo">115</span> this.scan = scan;<a name="line.115"></a> -<span class="sourceLineNo">116</span> this.fs = rootDir.getFileSystem(conf);<a name="line.116"></a> -<span class="sourceLineNo">117</span> init();<a name="line.117"></a> -<span class="sourceLineNo">118</span> }<a name="line.118"></a> -<span class="sourceLineNo">119</span><a name="line.119"></a> -<span class="sourceLineNo">120</span> private void init() throws IOException {<a name="line.120"></a> -<span class="sourceLineNo">121</span> final RestoreSnapshotHelper.RestoreMetaChanges meta =<a name="line.121"></a> -<span class="sourceLineNo">122</span> RestoreSnapshotHelper.copySnapshotForScanner(<a name="line.122"></a> -<span class="sourceLineNo">123</span> conf, fs, rootDir, restoreDir, snapshotName);<a name="line.123"></a> -<span class="sourceLineNo">124</span> final List<HRegionInfo> restoredRegions = meta.getRegionsToAdd();<a name="line.124"></a> -<span class="sourceLineNo">125</span><a name="line.125"></a> -<span class="sourceLineNo">126</span> htd = meta.getTableDescriptor();<a name="line.126"></a> -<span class="sourceLineNo">127</span> regions = new ArrayList<>(restoredRegions.size());<a name="line.127"></a> -<span class="sourceLineNo">128</span> for (HRegionInfo hri : restoredRegions) {<a name="line.128"></a> -<span class="sourceLineNo">129</span> if (hri.isOffline() && (hri.isSplit() || hri.isSplitParent())) {<a name="line.129"></a> -<span class="sourceLineNo">130</span> continue;<a name="line.130"></a> -<span class="sourceLineNo">131</span> }<a name="line.131"></a> -<span class="sourceLineNo">132</span> if (CellUtil.overlappingKeys(scan.getStartRow(), scan.getStopRow(), hri.getStartKey(),<a name="line.132"></a> -<span class="sourceLineNo">133</span> hri.getEndKey())) {<a name="line.133"></a> -<span class="sourceLineNo">134</span> regions.add(hri);<a name="line.134"></a> -<span class="sourceLineNo">135</span> }<a name="line.135"></a> -<span class="sourceLineNo">136</span> }<a name="line.136"></a> -<span class="sourceLineNo">137</span><a name="line.137"></a> -<span class="sourceLineNo">138</span> // sort for regions according to startKey.<a name="line.138"></a> -<span class="sourceLineNo">139</span> Collections.sort(regions);<a name="line.139"></a> -<span class="sourceLineNo">140</span> initScanMetrics(scan);<a name="line.140"></a> -<span class="sourceLineNo">141</span> }<a name="line.141"></a> -<span class="sourceLineNo">142</span><a name="line.142"></a> -<span class="sourceLineNo">143</span> @Override<a name="line.143"></a> -<span class="sourceLineNo">144</span> public Result next() throws IOException {<a name="line.144"></a> -<span class="sourceLineNo">145</span> Result result = null;<a name="line.145"></a> -<span class="sourceLineNo">146</span> while (true) {<a name="line.146"></a> -<span class="sourceLineNo">147</span> if (currentRegionScanner == null) {<a name="line.147"></a> -<span class="sourceLineNo">148</span> currentRegion++;<a name="line.148"></a> -<span class="sourceLineNo">149</span> if (currentRegion >= regions.size()) {<a name="line.149"></a> -<span class="sourceLineNo">150</span> return null;<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> HRegionInfo hri = regions.get(currentRegion);<a name="line.153"></a> -<span class="sourceLineNo">154</span> currentRegionScanner = new ClientSideRegionScanner(conf, fs,<a name="line.154"></a> -<span class="sourceLineNo">155</span> restoreDir, htd, hri, scan, scanMetrics);<a name="line.155"></a> -<span class="sourceLineNo">156</span> if (this.scanMetrics != null) {<a name="line.156"></a> -<span class="sourceLineNo">157</span> this.scanMetrics.countOfRegions.incrementAndGet();<a name="line.157"></a> -<span class="sourceLineNo">158</span> }<a name="line.158"></a> -<span class="sourceLineNo">159</span> }<a name="line.159"></a> -<span class="sourceLineNo">160</span><a name="line.160"></a> -<span class="sourceLineNo">161</span> try {<a name="line.161"></a> -<span class="sourceLineNo">162</span> result = currentRegionScanner.next();<a name="line.162"></a> -<span class="sourceLineNo">163</span> if (result != null) {<a name="line.163"></a> -<span class="sourceLineNo">164</span> return result;<a name="line.164"></a> -<span class="sourceLineNo">165</span> }<a name="line.165"></a> -<span class="sourceLineNo">166</span> } finally {<a name="line.166"></a> -<span class="sourceLineNo">167</span> if (result == null) {<a name="line.167"></a> -<span class="sourceLineNo">168</span> currentRegionScanner.close();<a name="line.168"></a> -<span class="sourceLineNo">169</span> currentRegionScanner = null;<a name="line.169"></a> -<span class="sourceLineNo">170</span> }<a name="line.170"></a> -<span class="sourceLineNo">171</span> }<a name="line.171"></a> -<span class="sourceLineNo">172</span> }<a name="line.172"></a> -<span class="sourceLineNo">173</span> }<a name="line.173"></a> -<span class="sourceLineNo">174</span><a name="line.174"></a> -<span class="sourceLineNo">175</span> @Override<a name="line.175"></a> -<span class="sourceLineNo">176</span> public void close() {<a name="line.176"></a> -<span class="sourceLineNo">177</span> if (currentRegionScanner != null) {<a name="line.177"></a> -<span class="sourceLineNo">178</span> currentRegionScanner.close();<a name="line.178"></a> -<span class="sourceLineNo">179</span> }<a name="line.179"></a> -<span class="sourceLineNo">180</span> try {<a name="line.180"></a> -<span class="sourceLineNo">181</span> fs.delete(this.restoreDir, true);<a name="line.181"></a> -<span class="sourceLineNo">182</span> } catch (IOException ex) {<a name="line.182"></a> -<span class="sourceLineNo">183</span> LOG.warn("Could not delete restore directory for the snapshot:" + ex);<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><a name="line.186"></a> -<span class="sourceLineNo">187</span> @Override<a name="line.187"></a> -<span class="sourceLineNo">188</span> public boolean renewLease() {<a name="line.188"></a> -<span class="sourceLineNo">189</span> throw new UnsupportedOperationException();<a name="line.189"></a> -<span class="sourceLineNo">190</span> 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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/82166ec2/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/CopyTable.html ---------------------------------------------------------------------- diff --git a/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/CopyTable.html b/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/CopyTable.html index 2451c68..d7da879 100644 --- a/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/CopyTable.html +++ b/apidocs/src-html/org/apache/hadoop/hbase/mapreduce/CopyTable.html @@ -169,7 +169,7 @@ <span class="sourceLineNo">161</span> try (Connection conn = ConnectionFactory.createConnection(getConf());<a name="line.161"></a> <span class="sourceLineNo">162</span> Admin admin = conn.getAdmin()) {<a name="line.162"></a> <span class="sourceLineNo">163</span> HFileOutputFormat2.configureIncrementalLoadMap(job,<a name="line.163"></a> -<span class="sourceLineNo">164</span> admin.listTableDescriptor((TableName.valueOf(dstTableName))));<a name="line.164"></a> +<span class="sourceLineNo">164</span> admin.getDescriptor((TableName.valueOf(dstTableName))));<a name="line.164"></a> <span class="sourceLineNo">165</span> }<a name="line.165"></a> <span class="sourceLineNo">166</span> } else {<a name="line.166"></a> <span class="sourceLineNo">167</span> TableMapReduceUtil.initTableMapperJob(tableName, scan,<a name="line.167"></a>