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From git-site-r...@apache.org
Subject [15/51] [partial] hbase-site git commit: Published site at 82d554e3783372cc6b05489452c815b57c06f6cd.
Date Sat, 10 Jun 2017 15:00:05 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/476c54ed/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SnapshotQuotaObserverChore.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SnapshotQuotaObserverChore.html b/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SnapshotQuotaObserverChore.html
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--- /dev/null
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SnapshotQuotaObserverChore.html
@@ -0,0 +1,615 @@
+<!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 or more<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * The ASF licenses this file to you under the Apache License, Version 2.0<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * the License.  You may obtain a copy of the License at<a name="line.7"></a>
+<span class="sourceLineNo">008</span> *<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a>
+<span class="sourceLineNo">016</span> */<a name="line.16"></a>
+<span class="sourceLineNo">017</span>package org.apache.hadoop.hbase.quotas;<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>import java.io.IOException;<a name="line.19"></a>
+<span class="sourceLineNo">020</span>import java.util.ArrayList;<a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.util.Arrays;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.util.Collection;<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.HashSet;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.Map.Entry;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.Objects;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Set;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.TimeUnit;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.function.Predicate;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.stream.Collectors;<a name="line.32"></a>
+<span class="sourceLineNo">033</span><a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.commons.lang.builder.HashCodeBuilder;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.commons.logging.Log;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.commons.logging.LogFactory;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.conf.Configuration;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.fs.FileStatus;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.fs.FileSystem;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.fs.Path;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ScheduledChore;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.Stoppable;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.TableName;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.Table;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.master.HMaster;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.MetricsMaster;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest.FamilyFiles;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest.StoreFile;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.snapshot.SnapshotManifest;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.util.HFileArchiveUtil;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.util.StringUtils;<a name="line.59"></a>
+<span class="sourceLineNo">060</span><a name="line.60"></a>
+<span class="sourceLineNo">061</span>import com.google.common.collect.HashMultimap;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import com.google.common.collect.Multimap;<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> * A Master-invoked {@code Chore} that computes the size of each snapshot which was created from<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * a table which has a space quota.<a name="line.66"></a>
+<span class="sourceLineNo">067</span> */<a name="line.67"></a>
+<span class="sourceLineNo">068</span>@InterfaceAudience.Private<a name="line.68"></a>
+<span class="sourceLineNo">069</span>public class SnapshotQuotaObserverChore extends ScheduledChore {<a name="line.69"></a>
+<span class="sourceLineNo">070</span>  private static final Log LOG = LogFactory.getLog(SnapshotQuotaObserverChore.class);<a name="line.70"></a>
+<span class="sourceLineNo">071</span>  static final String SNAPSHOT_QUOTA_CHORE_PERIOD_KEY =<a name="line.71"></a>
+<span class="sourceLineNo">072</span>      "hbase.master.quotas.snapshot.chore.period";<a name="line.72"></a>
+<span class="sourceLineNo">073</span>  static final int SNAPSHOT_QUOTA_CHORE_PERIOD_DEFAULT = 1000 * 60 * 5; // 5 minutes in millis<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span>  static final String SNAPSHOT_QUOTA_CHORE_DELAY_KEY =<a name="line.75"></a>
+<span class="sourceLineNo">076</span>      "hbase.master.quotas.snapshot.chore.delay";<a name="line.76"></a>
+<span class="sourceLineNo">077</span>  static final long SNAPSHOT_QUOTA_CHORE_DELAY_DEFAULT = 1000L * 60L; // 1 minute in millis<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span>  static final String SNAPSHOT_QUOTA_CHORE_TIMEUNIT_KEY =<a name="line.79"></a>
+<span class="sourceLineNo">080</span>      "hbase.master.quotas.snapshot.chore.timeunit";<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  static final String SNAPSHOT_QUOTA_CHORE_TIMEUNIT_DEFAULT = TimeUnit.MILLISECONDS.name();<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  private final Connection conn;<a name="line.83"></a>
+<span class="sourceLineNo">084</span>  private final Configuration conf;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>  private final MetricsMaster metrics;<a name="line.85"></a>
+<span class="sourceLineNo">086</span>  private final FileSystem fs;<a name="line.86"></a>
+<span class="sourceLineNo">087</span><a name="line.87"></a>
+<span class="sourceLineNo">088</span>  public SnapshotQuotaObserverChore(HMaster master, MetricsMaster metrics) {<a name="line.88"></a>
+<span class="sourceLineNo">089</span>    this(<a name="line.89"></a>
+<span class="sourceLineNo">090</span>        master.getConnection(), master.getConfiguration(), master.getFileSystem(), master, metrics);<a name="line.90"></a>
+<span class="sourceLineNo">091</span>  }<a name="line.91"></a>
+<span class="sourceLineNo">092</span><a name="line.92"></a>
+<span class="sourceLineNo">093</span>  SnapshotQuotaObserverChore(<a name="line.93"></a>
+<span class="sourceLineNo">094</span>      Connection conn, Configuration conf, FileSystem fs, Stoppable stopper,<a name="line.94"></a>
+<span class="sourceLineNo">095</span>      MetricsMaster metrics) {<a name="line.95"></a>
+<span class="sourceLineNo">096</span>    super(<a name="line.96"></a>
+<span class="sourceLineNo">097</span>        QuotaObserverChore.class.getSimpleName(), stopper, getPeriod(conf),<a name="line.97"></a>
+<span class="sourceLineNo">098</span>        getInitialDelay(conf), getTimeUnit(conf));<a name="line.98"></a>
+<span class="sourceLineNo">099</span>    this.conn = conn;<a name="line.99"></a>
+<span class="sourceLineNo">100</span>    this.conf = conf;<a name="line.100"></a>
+<span class="sourceLineNo">101</span>    this.metrics = metrics;<a name="line.101"></a>
+<span class="sourceLineNo">102</span>    this.fs = fs;<a name="line.102"></a>
+<span class="sourceLineNo">103</span>  }<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span>  @Override<a name="line.105"></a>
+<span class="sourceLineNo">106</span>  protected void chore() {<a name="line.106"></a>
+<span class="sourceLineNo">107</span>    try {<a name="line.107"></a>
+<span class="sourceLineNo">108</span>      if (LOG.isTraceEnabled()) {<a name="line.108"></a>
+<span class="sourceLineNo">109</span>        LOG.trace("Computing sizes of snapshots for quota management.");<a name="line.109"></a>
+<span class="sourceLineNo">110</span>      }<a name="line.110"></a>
+<span class="sourceLineNo">111</span>      long start = System.nanoTime();<a name="line.111"></a>
+<span class="sourceLineNo">112</span>      _chore();<a name="line.112"></a>
+<span class="sourceLineNo">113</span>      if (null != metrics) {<a name="line.113"></a>
+<span class="sourceLineNo">114</span>        metrics.incrementSnapshotObserverTime((System.nanoTime() - start) / 1_000_000);<a name="line.114"></a>
+<span class="sourceLineNo">115</span>      }<a name="line.115"></a>
+<span class="sourceLineNo">116</span>    } catch (IOException e) {<a name="line.116"></a>
+<span class="sourceLineNo">117</span>      LOG.warn("Failed to compute the size of snapshots, will retry", e);<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><a name="line.120"></a>
+<span class="sourceLineNo">121</span>  void _chore() throws IOException {<a name="line.121"></a>
+<span class="sourceLineNo">122</span>    // Gets all tables with quotas that also have snapshots.<a name="line.122"></a>
+<span class="sourceLineNo">123</span>    // This values are all of the snapshots that we need to compute the size of.<a name="line.123"></a>
+<span class="sourceLineNo">124</span>    long start = System.nanoTime();<a name="line.124"></a>
+<span class="sourceLineNo">125</span>    Multimap&lt;TableName,String&gt; snapshotsToComputeSize = getSnapshotsToComputeSize();<a name="line.125"></a>
+<span class="sourceLineNo">126</span>    if (null != metrics) {<a name="line.126"></a>
+<span class="sourceLineNo">127</span>      metrics.incrementSnapshotFetchTime((System.nanoTime() - start) / 1_000_000);<a name="line.127"></a>
+<span class="sourceLineNo">128</span>    }<a name="line.128"></a>
+<span class="sourceLineNo">129</span><a name="line.129"></a>
+<span class="sourceLineNo">130</span>    // For each table, compute the size of each snapshot<a name="line.130"></a>
+<span class="sourceLineNo">131</span>    Multimap&lt;TableName,SnapshotWithSize&gt; snapshotsWithSize = computeSnapshotSizes(<a name="line.131"></a>
+<span class="sourceLineNo">132</span>        snapshotsToComputeSize);<a name="line.132"></a>
+<span class="sourceLineNo">133</span><a name="line.133"></a>
+<span class="sourceLineNo">134</span>    // Write the size data to the quota table.<a name="line.134"></a>
+<span class="sourceLineNo">135</span>    persistSnapshotSizes(snapshotsWithSize);<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>  /**<a name="line.138"></a>
+<span class="sourceLineNo">139</span>   * Fetches each table with a quota (table or namespace quota), and then fetch the name of each<a name="line.139"></a>
+<span class="sourceLineNo">140</span>   * snapshot which was created from that table.<a name="line.140"></a>
+<span class="sourceLineNo">141</span>   *<a name="line.141"></a>
+<span class="sourceLineNo">142</span>   * @return A mapping of table to snapshots created from that table<a name="line.142"></a>
+<span class="sourceLineNo">143</span>   */<a name="line.143"></a>
+<span class="sourceLineNo">144</span>  Multimap&lt;TableName,String&gt; getSnapshotsToComputeSize() throws IOException {<a name="line.144"></a>
+<span class="sourceLineNo">145</span>    Set&lt;TableName&gt; tablesToFetchSnapshotsFrom = new HashSet&lt;&gt;();<a name="line.145"></a>
+<span class="sourceLineNo">146</span>    QuotaFilter filter = new QuotaFilter();<a name="line.146"></a>
+<span class="sourceLineNo">147</span>    filter.addTypeFilter(QuotaType.SPACE);<a name="line.147"></a>
+<span class="sourceLineNo">148</span>    try (Admin admin = conn.getAdmin()) {<a name="line.148"></a>
+<span class="sourceLineNo">149</span>      // Pull all of the tables that have quotas (direct, or from namespace)<a name="line.149"></a>
+<span class="sourceLineNo">150</span>      for (QuotaSettings qs : QuotaRetriever.open(conf, filter)) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span>        String ns = qs.getNamespace();<a name="line.151"></a>
+<span class="sourceLineNo">152</span>        TableName tn = qs.getTableName();<a name="line.152"></a>
+<span class="sourceLineNo">153</span>        if ((null == ns &amp;&amp; null == tn) || (null != ns &amp;&amp; null != tn)) {<a name="line.153"></a>
+<span class="sourceLineNo">154</span>          throw new IllegalStateException(<a name="line.154"></a>
+<span class="sourceLineNo">155</span>              "Expected only one of namespace and tablename to be null");<a name="line.155"></a>
+<span class="sourceLineNo">156</span>        }<a name="line.156"></a>
+<span class="sourceLineNo">157</span>        // Collect either the table name itself, or all of the tables in the namespace<a name="line.157"></a>
+<span class="sourceLineNo">158</span>        if (null != ns) {<a name="line.158"></a>
+<span class="sourceLineNo">159</span>          tablesToFetchSnapshotsFrom.addAll(Arrays.asList(admin.listTableNamesByNamespace(ns)));<a name="line.159"></a>
+<span class="sourceLineNo">160</span>        } else {<a name="line.160"></a>
+<span class="sourceLineNo">161</span>          tablesToFetchSnapshotsFrom.add(tn);<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>      // Fetch all snapshots that were created from these tables<a name="line.164"></a>
+<span class="sourceLineNo">165</span>      return getSnapshotsFromTables(admin, tablesToFetchSnapshotsFrom);<a name="line.165"></a>
+<span class="sourceLineNo">166</span>    }<a name="line.166"></a>
+<span class="sourceLineNo">167</span>  }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span>  /**<a name="line.169"></a>
+<span class="sourceLineNo">170</span>   * Computes a mapping of originating {@code TableName} to snapshots, when the {@code TableName}<a name="line.170"></a>
+<span class="sourceLineNo">171</span>   * exists in the provided {@code Set}.<a name="line.171"></a>
+<span class="sourceLineNo">172</span>   */<a name="line.172"></a>
+<span class="sourceLineNo">173</span>  Multimap&lt;TableName,String&gt; getSnapshotsFromTables(<a name="line.173"></a>
+<span class="sourceLineNo">174</span>      Admin admin, Set&lt;TableName&gt; tablesToFetchSnapshotsFrom) throws IOException {<a name="line.174"></a>
+<span class="sourceLineNo">175</span>    Multimap&lt;TableName,String&gt; snapshotsToCompute = HashMultimap.create();<a name="line.175"></a>
+<span class="sourceLineNo">176</span>    for (org.apache.hadoop.hbase.client.SnapshotDescription sd : admin.listSnapshots()) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span>      TableName tn = sd.getTableName();<a name="line.177"></a>
+<span class="sourceLineNo">178</span>      if (tablesToFetchSnapshotsFrom.contains(tn)) {<a name="line.178"></a>
+<span class="sourceLineNo">179</span>        snapshotsToCompute.put(tn, sd.getName());<a name="line.179"></a>
+<span class="sourceLineNo">180</span>      }<a name="line.180"></a>
+<span class="sourceLineNo">181</span>    }<a name="line.181"></a>
+<span class="sourceLineNo">182</span>    return snapshotsToCompute;<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>   * Computes the size of each snapshot provided given the current files referenced by the table.<a name="line.186"></a>
+<span class="sourceLineNo">187</span>   *<a name="line.187"></a>
+<span class="sourceLineNo">188</span>   * @param snapshotsToComputeSize The snapshots to compute the size of<a name="line.188"></a>
+<span class="sourceLineNo">189</span>   * @return A mapping of table to snapshot created from that table and the snapshot's size.<a name="line.189"></a>
+<span class="sourceLineNo">190</span>   */<a name="line.190"></a>
+<span class="sourceLineNo">191</span>  Multimap&lt;TableName,SnapshotWithSize&gt; computeSnapshotSizes(<a name="line.191"></a>
+<span class="sourceLineNo">192</span>      Multimap&lt;TableName,String&gt; snapshotsToComputeSize) throws IOException {<a name="line.192"></a>
+<span class="sourceLineNo">193</span>    Multimap&lt;TableName,SnapshotWithSize&gt; snapshotSizes = HashMultimap.create();<a name="line.193"></a>
+<span class="sourceLineNo">194</span>    for (Entry&lt;TableName,Collection&lt;String&gt;&gt; entry : snapshotsToComputeSize.asMap().entrySet()) {<a name="line.194"></a>
+<span class="sourceLineNo">195</span>      final TableName tn = entry.getKey();<a name="line.195"></a>
+<span class="sourceLineNo">196</span>      final List&lt;String&gt; snapshotNames = new ArrayList&lt;&gt;(entry.getValue());<a name="line.196"></a>
+<span class="sourceLineNo">197</span>      // Sort the snapshots so we process them in lexicographic order. This ensures that multiple<a name="line.197"></a>
+<span class="sourceLineNo">198</span>      // invocations of this Chore do not more the size ownership of some files between snapshots<a name="line.198"></a>
+<span class="sourceLineNo">199</span>      // that reference the file (prevents size ownership from moving between snapshots).<a name="line.199"></a>
+<span class="sourceLineNo">200</span>      Collections.sort(snapshotNames);<a name="line.200"></a>
+<span class="sourceLineNo">201</span>      final Path rootDir = FSUtils.getRootDir(conf);<a name="line.201"></a>
+<span class="sourceLineNo">202</span>      // Get the map of store file names to store file path for this table<a name="line.202"></a>
+<span class="sourceLineNo">203</span>      // TODO is the store-file name unique enough? Does this need to be region+family+storefile?<a name="line.203"></a>
+<span class="sourceLineNo">204</span>      final Set&lt;String&gt; tableReferencedStoreFiles;<a name="line.204"></a>
+<span class="sourceLineNo">205</span>      try {<a name="line.205"></a>
+<span class="sourceLineNo">206</span>        tableReferencedStoreFiles = FSUtils.getTableStoreFilePathMap(fs, rootDir).keySet();<a name="line.206"></a>
+<span class="sourceLineNo">207</span>      } catch (InterruptedException e) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span>        Thread.currentThread().interrupt();<a name="line.208"></a>
+<span class="sourceLineNo">209</span>        return null;<a name="line.209"></a>
+<span class="sourceLineNo">210</span>      }<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span>      if (LOG.isTraceEnabled()) {<a name="line.212"></a>
+<span class="sourceLineNo">213</span>        LOG.trace("Paths for " + tn + ": " + tableReferencedStoreFiles);<a name="line.213"></a>
+<span class="sourceLineNo">214</span>      }<a name="line.214"></a>
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+<span class="sourceLineNo">462</span>   */<a name="line.462"></a>
+<span class="sourceLineNo">463</span>  static class StoreFileReference {<a name="line.463"></a>
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+<span class="sourceLineNo">467</span>    StoreFileReference(String regionName) {<a name="line.467"></a>
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+<span class="sourceLineNo">479</span><a name="line.479"></a>
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+<span class="sourceLineNo">508</span><a name="line.508"></a>
+<span class="sourceLineNo">509</span>  /**<a name="line.509"></a>
+<span class="sourceLineNo">510</span>   * Extracts the period for the chore from the configuration.<a name="line.510"></a>
+<span class="sourceLineNo">511</span>   *<a name="line.511"></a>
+<span class="sourceLineNo">512</span>   * @param conf The configuration object.<a name="line.512"></a>
+<span class="sourceLineNo">513</span>   * @return The configured chore period or the default value.<a name="line.513"></a>
+<span class="sourceLineNo">514</span>   */<a name="line.514"></a>
+<span class="sourceLineNo">515</span>  static int getPeriod(Configuration conf) {<a name="line.515"></a>
+<span class="sourceLineNo">516</span>    return conf.getInt(SNAPSHOT_QUOTA_CHORE_PERIOD_KEY,<a name="line.516"></a>
+<span class="sourceLineNo">517</span>        SNAPSHOT_QUOTA_CHORE_PERIOD_DEFAULT);<a name="line.517"></a>
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+<span class="sourceLineNo">519</span><a name="line.519"></a>
+<span class="sourceLineNo">520</span>  /**<a name="line.520"></a>
+<span class="sourceLineNo">521</span>   * Extracts the initial delay for the chore from the configuration.<a name="line.521"></a>
+<span class="sourceLineNo">522</span>   *<a name="line.522"></a>
+<span class="sourceLineNo">523</span>   * @param conf The configuration object.<a name="line.523"></a>
+<span class="sourceLineNo">524</span>   * @return The configured chore initial delay or the default value.<a name="line.524"></a>
+<span class="sourceLineNo">525</span>   */<a name="line.525"></a>
+<span class="sourceLineNo">526</span>  static long getInitialDelay(Configuration conf) {<a name="line.526"></a>
+<span class="sourceLineNo">527</span>    return conf.getLong(SNAPSHOT_QUOTA_CHORE_DELAY_KEY,<a name="line.527"></a>
+<span class="sourceLineNo">528</span>        SNAPSHOT_QUOTA_CHORE_DELAY_DEFAULT);<a name="line.528"></a>
+<span class="sourceLineNo">529</span>  }<a name="line.529"></a>
+<span class="sourceLineNo">530</span><a name="line.530"></a>
+<span class="sourceLineNo">531</span>  /**<a name="line.531"></a>
+<span class="sourceLineNo">532</span>   * Extracts the time unit for the chore period and initial delay from the configuration. The<a name="line.532"></a>
+<span class="sourceLineNo">533</span>   * configuration value for {@link #SNAPSHOT_QUOTA_CHORE_TIMEUNIT_KEY} must correspond to<a name="line.533"></a>
+<span class="sourceLineNo">534</span>   * a {@link TimeUnit} value.<a name="line.534"></a>
+<span class="sourceLineNo">535</span>   *<a name="line.535"></a>
+<span class="sourceLineNo">536</span>   * @param conf The configuration object.<a name="line.536"></a>
+<span class="sourceLineNo">537</span>   * @return The configured time unit for the chore period and initial delay or the default value.<a name="line.537"></a>
+<span class="sourceLineNo">538</span>   */<a name="line.538"></a>
+<span class="sourceLineNo">539</span>  static TimeUnit getTimeUnit(Configuration conf) {<a name="line.539"></a>
+<span class="sourceLineNo">540</span>    return TimeUnit.valueOf(conf.get(SNAPSHOT_QUOTA_CHORE_TIMEUNIT_KEY,<a name="line.540"></a>
+<span class="sourceLineNo">541</span>        SNAPSHOT_QUOTA_CHORE_TIMEUNIT_DEFAULT));<a name="line.541"></a>
+<span class="sourceLineNo">542</span>  }<a name="line.542"></a>
+<span class="sourceLineNo">543</span>}<a name="line.543"></a>
+
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+</pre>
+</div>
+</body>
+</html>

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/476c54ed/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SpaceQuotaSnapshot.SpaceQuotaStatus.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SpaceQuotaSnapshot.SpaceQuotaStatus.html b/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SpaceQuotaSnapshot.SpaceQuotaStatus.html
index 3a57bbd..b408e5f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SpaceQuotaSnapshot.SpaceQuotaStatus.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/quotas/SpaceQuotaSnapshot.SpaceQuotaStatus.html
@@ -30,182 +30,184 @@
 <span class="sourceLineNo">022</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.22"></a>
 <span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.23"></a>
 <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.QuotaProtos;<a name="line.24"></a>
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-<span class="sourceLineNo">030</span>public class SpaceQuotaSnapshot {<a name="line.30"></a>
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-<span class="sourceLineNo">039</span>   * If the quota is not in violation, the violation may be null. If the quota is in violation,<a name="line.39"></a>
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-<span class="sourceLineNo">200</span>}<a name="line.200"></a>
+<span class="sourceLineNo">025</span>import org.apache.hadoop.util.StringUtils;<a name="line.25"></a>
+<span class="sourceLineNo">026</span><a name="line.26"></a>
+<span class="sourceLineNo">027</span>/**<a name="line.27"></a>
+<span class="sourceLineNo">028</span> * A point-in-time view of a space quota on a table.<a name="line.28"></a>
+<span class="sourceLineNo">029</span> */<a name="line.29"></a>
+<span class="sourceLineNo">030</span>@InterfaceAudience.Private<a name="line.30"></a>
+<span class="sourceLineNo">031</span>public class SpaceQuotaSnapshot {<a name="line.31"></a>
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+<span class="sourceLineNo">033</span>      SpaceQuotaStatus.notInViolation(), 0, Long.MAX_VALUE);<a name="line.33"></a>
+<span class="sourceLineNo">034</span>  private final SpaceQuotaStatus quotaStatus;<a name="line.34"></a>
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+<span class="sourceLineNo">036</span>  private final long limit;<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>   * Encapsulates the state of a quota on a table. The quota may or may not be in violation.<a name="line.39"></a>
+<span class="sourceLineNo">040</span>   * If the quota is not in violation, the violation may be null. If the quota is in violation,<a name="line.40"></a>
+<span class="sourceLineNo">041</span>   * there is guaranteed to be a non-null violation policy.<a name="line.41"></a>
+<span class="sourceLineNo">042</span>   */<a name="line.42"></a>
+<span class="sourceLineNo">043</span>  @InterfaceAudience.Private<a name="line.43"></a>
+<span class="sourceLineNo">044</span>  public static class SpaceQuotaStatus {<a name="line.44"></a>
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+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span>    /**<a name="line.49"></a>
+<span class="sourceLineNo">050</span>     * Constructs a {@code SpaceQuotaSnapshot} which is in violation of the provided {@code policy}.<a name="line.50"></a>
+<span class="sourceLineNo">051</span>     *<a name="line.51"></a>
+<span class="sourceLineNo">052</span>     * Use {@link #notInViolation()} to obtain an instance of this class for the cases when the<a name="line.52"></a>
+<span class="sourceLineNo">053</span>     * quota is not in violation.<a name="line.53"></a>
+<span class="sourceLineNo">054</span>     *<a name="line.54"></a>
+<span class="sourceLineNo">055</span>     * @param policy The non-null policy being violated.<a name="line.55"></a>
+<span class="sourceLineNo">056</span>     */<a name="line.56"></a>
+<span class="sourceLineNo">057</span>    public SpaceQuotaStatus(SpaceViolationPolicy policy) {<a name="line.57"></a>
+<span class="sourceLineNo">058</span>      // If the caller is instantiating a status, the policy must be non-null<a name="line.58"></a>
+<span class="sourceLineNo">059</span>      this (Objects.requireNonNull(policy), true);<a name="line.59"></a>
+<span class="sourceLineNo">060</span>    }<a name="line.60"></a>
+<span class="sourceLineNo">061</span><a name="line.61"></a>
+<span class="sourceLineNo">062</span>    private SpaceQuotaStatus(SpaceViolationPolicy policy, boolean inViolation) {<a name="line.62"></a>
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+<span class="sourceLineNo">064</span>      this.inViolation = inViolation;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>    }<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span>    /**<a name="line.67"></a>
+<span class="sourceLineNo">068</span>     * Returns the violation policy, which may be null. It is guaranteed to be non-null if<a name="line.68"></a>
+<span class="sourceLineNo">069</span>     * {@link #isInViolation()} is {@code true}, but may be null otherwise.<a name="line.69"></a>
+<span class="sourceLineNo">070</span>     */<a name="line.70"></a>
+<span class="sourceLineNo">071</span>    public SpaceViolationPolicy getPolicy() {<a name="line.71"></a>
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+<span class="sourceLineNo">073</span>    }<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span>    /**<a name="line.75"></a>
+<span class="sourceLineNo">076</span>     * @return {@code true} if the quota is being violated, {@code false} otherwise.<a name="line.76"></a>
+<span class="sourceLineNo">077</span>     */<a name="line.77"></a>
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+<span class="sourceLineNo">082</span>    /**<a name="line.82"></a>
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+<span class="sourceLineNo">085</span>    public static SpaceQuotaStatus notInViolation() {<a name="line.85"></a>
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+<span class="sourceLineNo">088</span><a name="line.88"></a>
+<span class="sourceLineNo">089</span>    @Override<a name="line.89"></a>
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+<span class="sourceLineNo">092</span>          .append(inViolation).toHashCode();<a name="line.92"></a>
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+<span class="sourceLineNo">095</span>    @Override<a name="line.95"></a>
+<span class="sourceLineNo">096</span>    public boolean equals(Object o) {<a name="line.96"></a>
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+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span>    @Override<a name="line.104"></a>
+<span class="sourceLineNo">105</span>    public String toString() {<a name="line.105"></a>
+<span class="sourceLineNo">106</span>      StringBuilder sb = new StringBuilder(getClass().getSimpleName());<a name="line.106"></a>
+<span class="sourceLineNo">107</span>      sb.append("[policy=").append(policy);<a name="line.107"></a>
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+<span class="sourceLineNo">110</span>    }<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span>    public static QuotaProtos.SpaceQuotaStatus toProto(SpaceQuotaStatus status) {<a name="line.112"></a>
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+<span class="sourceLineNo">115</span>      if (status.isInViolation()) {<a name="line.115"></a>
+<span class="sourceLineNo">116</span>        builder.setViolationPolicy(ProtobufUtil.toProtoViolationPolicy(status.getPolicy()));<a name="line.116"></a>
+<span class="sourceLineNo">117</span>      }<a name="line.117"></a>
+<span class="sourceLineNo">118</span>      return builder.build();<a name="line.118"></a>
+<span class="sourceLineNo">119</span>    }<a name="line.119"></a>
+<span class="sourceLineNo">120</span><a name="line.120"></a>
+<span class="sourceLineNo">121</span>    public static SpaceQuotaStatus toStatus(QuotaProtos.SpaceQuotaStatus proto) {<a name="line.121"></a>
+<span class="sourceLineNo">122</span>      if (proto.getInViolation()) {<a name="line.122"></a>
+<span class="sourceLineNo">123</span>        return new SpaceQuotaStatus(ProtobufUtil.toViolationPolicy(proto.getViolationPolicy()));<a name="line.123"></a>
+<span class="sourceLineNo">124</span>      } else {<a name="line.124"></a>
+<span class="sourceLineNo">125</span>        return NOT_IN_VIOLATION;<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><a name="line.129"></a>
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+<span class="sourceLineNo">131</span>    this.quotaStatus = Objects.requireNonNull(quotaStatus);<a name="line.131"></a>
+<span class="sourceLineNo">132</span>    this.usage = usage;<a name="line.132"></a>
+<span class="sourceLineNo">133</span>    this.limit = limit;<a name="line.133"></a>
+<span class="sourceLineNo">134</span>  }<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>   * Returns the status of the quota.<a name="line.137"></a>
+<span class="sourceLineNo">138</span>   */<a name="line.138"></a>
+<span class="sourceLineNo">139</span>  public SpaceQuotaStatus getQuotaStatus() {<a name="line.139"></a>
+<span class="sourceLineNo">140</span>    return quotaStatus;<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>  /**<a name="line.143"></a>
+<span class="sourceLineNo">144</span>   * Returns the current usage, in bytes, of the target (e.g. table, namespace).<a name="line.144"></a>
+<span class="sourceLineNo">145</span>   */<a name="line.145"></a>
+<span class="sourceLineNo">146</span>  public long getUsage() {<a name="line.146"></a>
+<span class="sourceLineNo">147</span>    return usage;<a name="line.147"></a>
+<span class="sourceLineNo">148</span>  }<a name="line.148"></a>
+<span class="sourceLineNo">149</span><a name="line.149"></a>
+<span class="sourceLineNo">150</span>  /**<a name="line.150"></a>
+<span class="sourceLineNo">151</span>   * Returns the limit, in bytes, of the target (e.g. table, namespace).<a name="line.151"></a>
+<span class="sourceLineNo">152</span>   */<a name="line.152"></a>
+<span class="sourceLineNo">153</span>  public long getLimit() {<a name="line.153"></a>
+<span class="sourceLineNo">154</span>    return limit;<a name="line.154"></a>
+<span class="sourceLineNo">155</span>  }<a name="line.155"></a>
+<span class="sourceLineNo">156</span><a name="line.156"></a>
+<span class="sourceLineNo">157</span>  @Override<a name="line.157"></a>
+<span class="sourceLineNo">158</span>  public int hashCode() {<a name="line.158"></a>
+<span class="sourceLineNo">159</span>    return new HashCodeBuilder()<a name="line.159"></a>
+<span class="sourceLineNo">160</span>        .append(quotaStatus.hashCode())<a name="line.160"></a>
+<span class="sourceLineNo">161</span>        .append(usage)<a name="line.161"></a>
+<span class="sourceLineNo">162</span>        .append(limit)<a name="line.162"></a>
+<span class="sourceLineNo">163</span>        .toHashCode();<a name="line.163"></a>
+<span class="sourceLineNo">164</span>  }<a name="line.164"></a>
+<span class="sourceLineNo">165</span><a name="line.165"></a>
+<span class="sourceLineNo">166</span>  @Override<a name="line.166"></a>
+<span class="sourceLineNo">167</span>  public boolean equals(Object o) {<a name="line.167"></a>
+<span class="sourceLineNo">168</span>    if (o instanceof SpaceQuotaSnapshot) {<a name="line.168"></a>
+<span class="sourceLineNo">169</span>      SpaceQuotaSnapshot other = (SpaceQuotaSnapshot) o;<a name="line.169"></a>
+<span class="sourceLineNo">170</span>      return quotaStatus.equals(other.quotaStatus) &amp;&amp; usage == other.usage &amp;&amp; limit == other.limit;<a name="line.170"></a>
+<span class="sourceLineNo">171</span>    }<a name="line.171"></a>
+<span class="sourceLineNo">172</span>    return false;<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 String toString() {<a name="line.176"></a>
+<span class="sourceLineNo">177</span>    StringBuilder sb = new StringBuilder(32);<a name="line.177"></a>
+<span class="sourceLineNo">178</span>    sb.append("SpaceQuotaSnapshot[policy=").append(quotaStatus).append(", use=");<a name="line.178"></a>
+<span class="sourceLineNo">179</span>    sb.append(StringUtils.byteDesc(usage)).append("/");<a name="line.179"></a>
+<span class="sourceLineNo">180</span>    sb.append(StringUtils.byteDesc(limit)).append("]");<a name="line.180"></a>
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+<span class="sourceLineNo">182</span>  }<a name="line.182"></a>
+<span class="sourceLineNo">183</span><a name="line.183"></a>
+<span class="sourceLineNo">184</span>  // ProtobufUtil is in hbase-client, and this doesn't need to be public.<a name="line.184"></a>
+<span class="sourceLineNo">185</span>  public static SpaceQuotaSnapshot toSpaceQuotaSnapshot(QuotaProtos.SpaceQuotaSnapshot proto) {<a name="line.185"></a>
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+<span class="sourceLineNo">187</span>        proto.getQuotaUsage(), proto.getQuotaLimit());<a name="line.187"></a>
+<span class="sourceLineNo">188</span>  }<a name="line.188"></a>
+<span class="sourceLineNo">189</span><a name="line.189"></a>
+<span class="sourceLineNo">190</span>  public static QuotaProtos.SpaceQuotaSnapshot toProtoSnapshot(SpaceQuotaSnapshot snapshot) {<a name="line.190"></a>
+<span class="sourceLineNo">191</span>    return QuotaProtos.SpaceQuotaSnapshot.newBuilder()<a name="line.191"></a>
+<span class="sourceLineNo">192</span>        .setQuotaStatus(SpaceQuotaStatus.toProto(snapshot.getQuotaStatus()))<a name="line.192"></a>
+<span class="sourceLineNo">193</span>        .setQuotaUsage(snapshot.getUsage()).setQuotaLimit(snapshot.getLimit()).build();<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 a singleton that corresponds to no snapshot information.<a name="line.197"></a>
+<span class="sourceLineNo">198</span>   */<a name="line.198"></a>
+<span class="sourceLineNo">199</span>  public static SpaceQuotaSnapshot getNoSuchSnapshot() {<a name="line.199"></a>
+<span class="sourceLineNo">200</span>    return NO_SUCH_SNAPSHOT;<a name="line.200"></a>
+<span class="sourceLineNo">201</span>  }<a name="line.201"></a>
+<span class="sourceLineNo">202</span>}<a name="line.202"></a>
 
 
 


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