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From git-site-r...@apache.org
Subject [25/51] [partial] hbase-site git commit: Published site at .
Date Mon, 23 Oct 2017 15:16:27 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/41a7fcc5/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactSplit.CompactionRunner.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactSplit.CompactionRunner.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactSplit.CompactionRunner.html
index 039a505..7df078f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactSplit.CompactionRunner.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactSplit.CompactionRunner.html
@@ -42,684 +42,741 @@
 <span class="sourceLineNo">034</span>import java.util.concurrent.ThreadFactory;<a name="line.34"></a>
 <span class="sourceLineNo">035</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.35"></a>
 <span class="sourceLineNo">036</span>import java.util.concurrent.TimeUnit;<a name="line.36"></a>
-<span class="sourceLineNo">037</span><a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.commons.logging.Log;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.commons.logging.LogFactory;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.conf.Configuration;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.conf.ConfigurationManager;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.conf.PropagatingConfigurationObserver;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.quotas.RegionServerSpaceQuotaManager;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionContext;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequestImpl;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.regionserver.throttle.CompactionThroughputControllerFactory;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.security.User;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.StealJobQueue;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.util.StringUtils;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.54"></a>
-<span class="sourceLineNo">055</span><a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.shaded.com.google.common.base.Preconditions;<a name="line.57"></a>
+<span class="sourceLineNo">037</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import java.util.function.IntSupplier;<a name="line.38"></a>
+<span class="sourceLineNo">039</span><a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.commons.logging.Log;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.commons.logging.LogFactory;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.conf.Configuration;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.conf.ConfigurationManager;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.conf.PropagatingConfigurationObserver;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.quotas.RegionServerSpaceQuotaManager;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionContext;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequestImpl;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequester;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.throttle.CompactionThroughputControllerFactory;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.security.User;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.StealJobQueue;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.util.StringUtils;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.57"></a>
 <span class="sourceLineNo">058</span><a name="line.58"></a>
-<span class="sourceLineNo">059</span>/**<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * Compact region on request and then run split if appropriate<a name="line.60"></a>
-<span class="sourceLineNo">061</span> */<a name="line.61"></a>
-<span class="sourceLineNo">062</span>@InterfaceAudience.Private<a name="line.62"></a>
-<span class="sourceLineNo">063</span>public class CompactSplit implements PropagatingConfigurationObserver {<a name="line.63"></a>
-<span class="sourceLineNo">064</span>  private static final Log LOG = LogFactory.getLog(CompactSplit.class);<a name="line.64"></a>
-<span class="sourceLineNo">065</span><a name="line.65"></a>
-<span class="sourceLineNo">066</span>  // Configuration key for the large compaction threads.<a name="line.66"></a>
-<span class="sourceLineNo">067</span>  public final static String LARGE_COMPACTION_THREADS =<a name="line.67"></a>
-<span class="sourceLineNo">068</span>      "hbase.regionserver.thread.compaction.large";<a name="line.68"></a>
-<span class="sourceLineNo">069</span>  public final static int LARGE_COMPACTION_THREADS_DEFAULT = 1;<a name="line.69"></a>
-<span class="sourceLineNo">070</span><a name="line.70"></a>
-<span class="sourceLineNo">071</span>  // Configuration key for the small compaction threads.<a name="line.71"></a>
-<span class="sourceLineNo">072</span>  public final static String SMALL_COMPACTION_THREADS =<a name="line.72"></a>
-<span class="sourceLineNo">073</span>      "hbase.regionserver.thread.compaction.small";<a name="line.73"></a>
-<span class="sourceLineNo">074</span>  public final static int SMALL_COMPACTION_THREADS_DEFAULT = 1;<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span>  // Configuration key for split threads<a name="line.76"></a>
-<span class="sourceLineNo">077</span>  public final static String SPLIT_THREADS = "hbase.regionserver.thread.split";<a name="line.77"></a>
-<span class="sourceLineNo">078</span>  public final static int SPLIT_THREADS_DEFAULT = 1;<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span>  public static final String REGION_SERVER_REGION_SPLIT_LIMIT =<a name="line.80"></a>
-<span class="sourceLineNo">081</span>      "hbase.regionserver.regionSplitLimit";<a name="line.81"></a>
-<span class="sourceLineNo">082</span>  public static final int DEFAULT_REGION_SERVER_REGION_SPLIT_LIMIT= 1000;<a name="line.82"></a>
-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span>  private final HRegionServer server;<a name="line.84"></a>
-<span class="sourceLineNo">085</span>  private final Configuration conf;<a name="line.85"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.com.google.common.base.Preconditions;<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> * Compact region on request and then run split if appropriate<a name="line.63"></a>
+<span class="sourceLineNo">064</span> */<a name="line.64"></a>
+<span class="sourceLineNo">065</span>@InterfaceAudience.Private<a name="line.65"></a>
+<span class="sourceLineNo">066</span>public class CompactSplit implements CompactionRequester, PropagatingConfigurationObserver {<a name="line.66"></a>
+<span class="sourceLineNo">067</span>  private static final Log LOG = LogFactory.getLog(CompactSplit.class);<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span>  // Configuration key for the large compaction threads.<a name="line.69"></a>
+<span class="sourceLineNo">070</span>  public final static String LARGE_COMPACTION_THREADS =<a name="line.70"></a>
+<span class="sourceLineNo">071</span>      "hbase.regionserver.thread.compaction.large";<a name="line.71"></a>
+<span class="sourceLineNo">072</span>  public final static int LARGE_COMPACTION_THREADS_DEFAULT = 1;<a name="line.72"></a>
+<span class="sourceLineNo">073</span><a name="line.73"></a>
+<span class="sourceLineNo">074</span>  // Configuration key for the small compaction threads.<a name="line.74"></a>
+<span class="sourceLineNo">075</span>  public final static String SMALL_COMPACTION_THREADS =<a name="line.75"></a>
+<span class="sourceLineNo">076</span>      "hbase.regionserver.thread.compaction.small";<a name="line.76"></a>
+<span class="sourceLineNo">077</span>  public final static int SMALL_COMPACTION_THREADS_DEFAULT = 1;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span>  // Configuration key for split threads<a name="line.79"></a>
+<span class="sourceLineNo">080</span>  public final static String SPLIT_THREADS = "hbase.regionserver.thread.split";<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  public final static int SPLIT_THREADS_DEFAULT = 1;<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  public static final String REGION_SERVER_REGION_SPLIT_LIMIT =<a name="line.83"></a>
+<span class="sourceLineNo">084</span>      "hbase.regionserver.regionSplitLimit";<a name="line.84"></a>
+<span class="sourceLineNo">085</span>  public static final int DEFAULT_REGION_SERVER_REGION_SPLIT_LIMIT= 1000;<a name="line.85"></a>
 <span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span>  private final ThreadPoolExecutor longCompactions;<a name="line.87"></a>
-<span class="sourceLineNo">088</span>  private final ThreadPoolExecutor shortCompactions;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>  private final ThreadPoolExecutor splits;<a name="line.89"></a>
-<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span>  private volatile ThroughputController compactionThroughputController;<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>  /**<a name="line.93"></a>
-<span class="sourceLineNo">094</span>   * Splitting should not take place if the total number of regions exceed this.<a name="line.94"></a>
-<span class="sourceLineNo">095</span>   * This is not a hard limit to the number of regions but it is a guideline to<a name="line.95"></a>
-<span class="sourceLineNo">096</span>   * stop splitting after number of online regions is greater than this.<a name="line.96"></a>
-<span class="sourceLineNo">097</span>   */<a name="line.97"></a>
-<span class="sourceLineNo">098</span>  private int regionSplitLimit;<a name="line.98"></a>
-<span class="sourceLineNo">099</span><a name="line.99"></a>
-<span class="sourceLineNo">100</span>  /** @param server */<a name="line.100"></a>
-<span class="sourceLineNo">101</span>  CompactSplit(HRegionServer server) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span>    super();<a name="line.102"></a>
-<span class="sourceLineNo">103</span>    this.server = server;<a name="line.103"></a>
-<span class="sourceLineNo">104</span>    this.conf = server.getConfiguration();<a name="line.104"></a>
-<span class="sourceLineNo">105</span>    this.regionSplitLimit = conf.getInt(REGION_SERVER_REGION_SPLIT_LIMIT,<a name="line.105"></a>
-<span class="sourceLineNo">106</span>        DEFAULT_REGION_SERVER_REGION_SPLIT_LIMIT);<a name="line.106"></a>
-<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span>    int largeThreads = Math.max(1, conf.getInt(<a name="line.108"></a>
-<span class="sourceLineNo">109</span>        LARGE_COMPACTION_THREADS, LARGE_COMPACTION_THREADS_DEFAULT));<a name="line.109"></a>
-<span class="sourceLineNo">110</span>    int smallThreads = conf.getInt(<a name="line.110"></a>
-<span class="sourceLineNo">111</span>        SMALL_COMPACTION_THREADS, SMALL_COMPACTION_THREADS_DEFAULT);<a name="line.111"></a>
-<span class="sourceLineNo">112</span><a name="line.112"></a>
-<span class="sourceLineNo">113</span>    int splitThreads = conf.getInt(SPLIT_THREADS, SPLIT_THREADS_DEFAULT);<a name="line.113"></a>
+<span class="sourceLineNo">087</span>  private final HRegionServer server;<a name="line.87"></a>
+<span class="sourceLineNo">088</span>  private final Configuration conf;<a name="line.88"></a>
+<span class="sourceLineNo">089</span><a name="line.89"></a>
+<span class="sourceLineNo">090</span>  private final ThreadPoolExecutor longCompactions;<a name="line.90"></a>
+<span class="sourceLineNo">091</span>  private final ThreadPoolExecutor shortCompactions;<a name="line.91"></a>
+<span class="sourceLineNo">092</span>  private final ThreadPoolExecutor splits;<a name="line.92"></a>
+<span class="sourceLineNo">093</span><a name="line.93"></a>
+<span class="sourceLineNo">094</span>  private volatile ThroughputController compactionThroughputController;<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>   * Splitting should not take place if the total number of regions exceed this.<a name="line.97"></a>
+<span class="sourceLineNo">098</span>   * This is not a hard limit to the number of regions but it is a guideline to<a name="line.98"></a>
+<span class="sourceLineNo">099</span>   * stop splitting after number of online regions is greater than this.<a name="line.99"></a>
+<span class="sourceLineNo">100</span>   */<a name="line.100"></a>
+<span class="sourceLineNo">101</span>  private int regionSplitLimit;<a name="line.101"></a>
+<span class="sourceLineNo">102</span><a name="line.102"></a>
+<span class="sourceLineNo">103</span>  /** @param server */<a name="line.103"></a>
+<span class="sourceLineNo">104</span>  CompactSplit(HRegionServer server) {<a name="line.104"></a>
+<span class="sourceLineNo">105</span>    this.server = server;<a name="line.105"></a>
+<span class="sourceLineNo">106</span>    this.conf = server.getConfiguration();<a name="line.106"></a>
+<span class="sourceLineNo">107</span>    this.regionSplitLimit = conf.getInt(REGION_SERVER_REGION_SPLIT_LIMIT,<a name="line.107"></a>
+<span class="sourceLineNo">108</span>        DEFAULT_REGION_SERVER_REGION_SPLIT_LIMIT);<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span>    int largeThreads = Math.max(1, conf.getInt(<a name="line.110"></a>
+<span class="sourceLineNo">111</span>        LARGE_COMPACTION_THREADS, LARGE_COMPACTION_THREADS_DEFAULT));<a name="line.111"></a>
+<span class="sourceLineNo">112</span>    int smallThreads = conf.getInt(<a name="line.112"></a>
+<span class="sourceLineNo">113</span>        SMALL_COMPACTION_THREADS, SMALL_COMPACTION_THREADS_DEFAULT);<a name="line.113"></a>
 <span class="sourceLineNo">114</span><a name="line.114"></a>
-<span class="sourceLineNo">115</span>    // if we have throttle threads, make sure the user also specified size<a name="line.115"></a>
-<span class="sourceLineNo">116</span>    Preconditions.checkArgument(largeThreads &gt; 0 &amp;&amp; smallThreads &gt; 0);<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span>    final String n = Thread.currentThread().getName();<a name="line.118"></a>
+<span class="sourceLineNo">115</span>    int splitThreads = conf.getInt(SPLIT_THREADS, SPLIT_THREADS_DEFAULT);<a name="line.115"></a>
+<span class="sourceLineNo">116</span><a name="line.116"></a>
+<span class="sourceLineNo">117</span>    // if we have throttle threads, make sure the user also specified size<a name="line.117"></a>
+<span class="sourceLineNo">118</span>    Preconditions.checkArgument(largeThreads &gt; 0 &amp;&amp; smallThreads &gt; 0);<a name="line.118"></a>
 <span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span>    StealJobQueue&lt;Runnable&gt; stealJobQueue = new StealJobQueue&lt;Runnable&gt;(COMPARATOR);<a name="line.120"></a>
-<span class="sourceLineNo">121</span>    this.longCompactions = new ThreadPoolExecutor(largeThreads, largeThreads,<a name="line.121"></a>
-<span class="sourceLineNo">122</span>        60, TimeUnit.SECONDS, stealJobQueue,<a name="line.122"></a>
-<span class="sourceLineNo">123</span>        new ThreadFactory() {<a name="line.123"></a>
-<span class="sourceLineNo">124</span>          @Override<a name="line.124"></a>
-<span class="sourceLineNo">125</span>          public Thread newThread(Runnable r) {<a name="line.125"></a>
-<span class="sourceLineNo">126</span>            String name = n + "-longCompactions-" + System.currentTimeMillis();<a name="line.126"></a>
-<span class="sourceLineNo">127</span>            return new Thread(r, name);<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>    this.longCompactions.setRejectedExecutionHandler(new Rejection());<a name="line.130"></a>
-<span class="sourceLineNo">131</span>    this.longCompactions.prestartAllCoreThreads();<a name="line.131"></a>
-<span class="sourceLineNo">132</span>    this.shortCompactions = new ThreadPoolExecutor(smallThreads, smallThreads,<a name="line.132"></a>
-<span class="sourceLineNo">133</span>        60, TimeUnit.SECONDS, stealJobQueue.getStealFromQueue(),<a name="line.133"></a>
-<span class="sourceLineNo">134</span>        new ThreadFactory() {<a name="line.134"></a>
-<span class="sourceLineNo">135</span>          @Override<a name="line.135"></a>
-<span class="sourceLineNo">136</span>          public Thread newThread(Runnable r) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span>            String name = n + "-shortCompactions-" + System.currentTimeMillis();<a name="line.137"></a>
-<span class="sourceLineNo">138</span>            return new Thread(r, name);<a name="line.138"></a>
-<span class="sourceLineNo">139</span>          }<a name="line.139"></a>
-<span class="sourceLineNo">140</span>      });<a name="line.140"></a>
-<span class="sourceLineNo">141</span>    this.shortCompactions<a name="line.141"></a>
-<span class="sourceLineNo">142</span>        .setRejectedExecutionHandler(new Rejection());<a name="line.142"></a>
-<span class="sourceLineNo">143</span>    this.splits = (ThreadPoolExecutor)<a name="line.143"></a>
-<span class="sourceLineNo">144</span>        Executors.newFixedThreadPool(splitThreads,<a name="line.144"></a>
-<span class="sourceLineNo">145</span>            new ThreadFactory() {<a name="line.145"></a>
-<span class="sourceLineNo">146</span>          @Override<a name="line.146"></a>
-<span class="sourceLineNo">147</span>          public Thread newThread(Runnable r) {<a name="line.147"></a>
-<span class="sourceLineNo">148</span>            String name = n + "-splits-" + System.currentTimeMillis();<a name="line.148"></a>
-<span class="sourceLineNo">149</span>            return new Thread(r, name);<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>    // compaction throughput controller<a name="line.153"></a>
-<span class="sourceLineNo">154</span>    this.compactionThroughputController =<a name="line.154"></a>
-<span class="sourceLineNo">155</span>        CompactionThroughputControllerFactory.create(server, conf);<a name="line.155"></a>
-<span class="sourceLineNo">156</span>  }<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span>  @Override<a name="line.158"></a>
-<span class="sourceLineNo">159</span>  public String toString() {<a name="line.159"></a>
-<span class="sourceLineNo">160</span>    return "compaction_queue=("<a name="line.160"></a>
-<span class="sourceLineNo">161</span>        + longCompactions.getQueue().size() + ":"<a name="line.161"></a>
-<span class="sourceLineNo">162</span>        + shortCompactions.getQueue().size() + ")"<a name="line.162"></a>
-<span class="sourceLineNo">163</span>        + ", split_queue=" + splits.getQueue().size();<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>  public String dumpQueue() {<a name="line.166"></a>
-<span class="sourceLineNo">167</span>    StringBuffer queueLists = new StringBuffer();<a name="line.167"></a>
-<span class="sourceLineNo">168</span>    queueLists.append("Compaction/Split Queue dump:\n");<a name="line.168"></a>
-<span class="sourceLineNo">169</span>    queueLists.append("  LargeCompation Queue:\n");<a name="line.169"></a>
-<span class="sourceLineNo">170</span>    BlockingQueue&lt;Runnable&gt; lq = longCompactions.getQueue();<a name="line.170"></a>
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-<span class="sourceLineNo">415</span>    public int compare(Runnable r1, Runnable r2) {<a name="line.415"></a>
-<span class="sourceLineNo">416</span>      // CompactionRunner first<a name="line.416"></a>
-<span class="sourceLineNo">417</span>      if (r1 instanceof CompactionRunner) {<a name="line.417"></a>
-<span class="sourceLineNo">418</span>        if (!(r2 instanceof CompactionRunner)) {<a name="line.418"></a>
-<span class="sourceLineNo">419</span>          return -1;<a name="line.419"></a>
-<span class="sourceLineNo">420</span>        }<a name="line.420"></a>
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-<span class="sourceLineNo">424</span>        } else {<a name="line.424"></a>
-<span class="sourceLineNo">425</span>          // break the tie based on hash code<a name="line.425"></a>
-<span class="sourceLineNo">426</span>          return System.identityHashCode(r1) - System.identityHashCode(r2);<a name="line.426"></a>
-<span class="sourceLineNo">427</span>        }<a name="line.427"></a>
-<span class="sourceLineNo">428</span>      }<a name="line.428"></a>
-<span class="sourceLineNo">429</span>      CompactionRunner o1 = (CompactionRunner) r1;<a name="line.429"></a>
-<span class="sourceLineNo">430</span>      CompactionRunner o2 = (CompactionRunner) r2;<a name="line.430"></a>
-<span class="sourceLineNo">431</span>      // less first<a name="line.431"></a>
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-<span class="sourceLineNo">433</span>      if (cmp != 0) {<a name="line.433"></a>
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-<span class="sourceLineNo">442</span>      }<a name="line.442"></a>
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-<span class="sourceLineNo">451</span>    private ThreadPoolExecutor parent;<a name="line.451"></a>
-<span class="sourceLineNo">452</span>    private User user;<a name="line.452"></a>
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-<span class="sourceLineNo">460</span>      this.compaction = compaction;<a name="line.460"></a>
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-<span class="sourceLineNo">462</span>          : store.getCompactPriority();<a name="line.462"></a>
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-<span class="sourceLineNo">465</span>      this.time = System.currentTimeMillis();<a name="line.465"></a>
-<span class="sourceLineNo">466</span>    }<a name="line.466"></a>
+<span class="sourceLineNo">365</span>  public synchronized void requestSystemCompaction(HRegion region, HStore store, String why)<a name="line.365"></a>
+<span class="sourceLineNo">366</span>      throws IOException {<a name="line.366"></a>
+<span class="sourceLineNo">367</span>    requestCompactionInternal(region, store, why, NO_PRIORITY, false,<a name="line.367"></a>
+<span class="sourceLineNo">368</span>      CompactionLifeCycleTracker.DUMMY, null);<a name="line.368"></a>
+<span class="sourceLineNo">369</span>  }<a name="line.369"></a>
+<span class="sourceLineNo">370</span><a name="line.370"></a>
+<span class="sourceLineNo">371</span>  private Optional&lt;CompactionContext&gt; selectCompaction(HRegion region, HStore store, int priority,<a name="line.371"></a>
+<span class="sourceLineNo">372</span>      CompactionLifeCycleTracker tracker, User user) throws IOException {<a name="line.372"></a>
+<span class="sourceLineNo">373</span>    Optional&lt;CompactionContext&gt; compaction = store.requestCompaction(priority, tracker, user);<a name="line.373"></a>
+<span class="sourceLineNo">374</span>    if (!compaction.isPresent() &amp;&amp; region.getRegionInfo() != null) {<a name="line.374"></a>
+<span class="sourceLineNo">375</span>      String reason = "Not compacting " + region.getRegionInfo().getRegionNameAsString() +<a name="line.375"></a>
+<span class="sourceLineNo">376</span>          " because compaction request was cancelled";<a name="line.376"></a>
+<span class="sourceLineNo">377</span>      tracker.notExecuted(store, reason);<a name="line.377"></a>
+<span class="sourceLineNo">378</span>      LOG.debug(reason);<a name="line.378"></a>
+<span class="sourceLineNo">379</span>    }<a name="line.379"></a>
+<span class="sourceLineNo">380</span>    return compaction;<a name="line.380"></a>
+<span class="sourceLineNo">381</span>  }<a name="line.381"></a>
+<span class="sourceLineNo">382</span><a name="line.382"></a>
+<span class="sourceLineNo">383</span>  /**<a name="line.383"></a>
+<span class="sourceLineNo">384</span>   * Only interrupt once it's done with a run through the work loop.<a name="line.384"></a>
+<span class="sourceLineNo">385</span>   */<a name="line.385"></a>
+<span class="sourceLineNo">386</span>  void interruptIfNecessary() {<a name="line.386"></a>
+<span class="sourceLineNo">387</span>    splits.shutdown();<a name="line.387"></a>
+<span class="sourceLineNo">388</span>    longCompactions.shutdown();<a name="line.388"></a>
+<span class="sourceLineNo">389</span>    shortCompactions.shutdown();<a name="line.389"></a>
+<span class="sourceLineNo">390</span>  }<a name="line.390"></a>
+<span class="sourceLineNo">391</span><a name="line.391"></a>
+<span class="sourceLineNo">392</span>  private void waitFor(ThreadPoolExecutor t, String name) {<a name="line.392"></a>
+<span class="sourceLineNo">393</span>    boolean done = false;<a name="line.393"></a>
+<span class="sourceLineNo">394</span>    while (!done) {<a name="line.394"></a>
+<span class="sourceLineNo">395</span>      try {<a name="line.395"></a>
+<span class="sourceLineNo">396</span>        done = t.awaitTermination(60, TimeUnit.SECONDS);<a name="line.396"></a>
+<span class="sourceLineNo">397</span>        LOG.info("Waiting for " + name + " to finish...");<a name="line.397"></a>
+<span class="sourceLineNo">398</span>        if (!done) {<a name="line.398"></a>
+<span class="sourceLineNo">399</span>          t.shutdownNow();<a name="line.399"></a>
+<span class="sourceLineNo">400</span>        }<a name="line.400"></a>
+<span class="sourceLineNo">401</span>      } catch (InterruptedException ie) {<a name="line.401"></a>
+<span class="sourceLineNo">402</span>        LOG.warn("Interrupted waiting for " + name + " to finish...");<a name="line.402"></a>
+<span class="sourceLineNo">403</span>      }<a name="line.403"></a>
+<span class="sourceLineNo">404</span>    }<a name="line.404"></a>
+<span class="sourceLineNo">405</span>  }<a name="line.405"></a>
+<span class="sourceLineNo">406</span><a name="line.406"></a>
+<span class="sourceLineNo">407</span>  void join() {<a name="line.407"></a>
+<span class="sourceLineNo">408</span>    waitFor(splits, "Split Thread");<a name="line.408"></a>
+<span class="sourceLineNo">409</span>    waitFor(longCompactions, "Large Compaction Thread");<a name="line.409"></a>
+<span class="sourceLineNo">410</span>    waitFor(shortCompactions, "Small Compaction Thread");<a name="line.410"></a>
+<span class="sourceLineNo">411</span>  }<a name="line.411"></a>
+<span class="sourceLineNo">412</span><a name="line.412"></a>
+<span class="sourceLineNo">413</span>  /**<a name="line.413"></a>
+<span class="sourceLineNo">414</span>   * Returns the current size of the queue containing regions that are<a name="line.414"></a>
+<span class="sourceLineNo">415</span>   * processed.<a name="line.415"></a>
+<span class="sourceLineNo">416</span>   *<a name="line.416"></a>
+<span class="sourceLineNo">417</span>   * @return The current size of the regions queue.<a name="line.417"></a>
+<span class="sourceLineNo">418</span>   */<a name="line.418"></a>
+<span class="sourceLineNo">419</span>  public int getCompactionQueueSize() {<a name="line.419"></a>
+<span class="sourceLineNo">420</span>    return longCompactions.getQueue().size() + shortCompactions.getQueue().size();<a name="line.420"></a>
+<span class="sourceLineNo">421</span>  }<a name="line.421"></a>
+<span class="sourceLineNo">422</span><a name="line.422"></a>
+<span class="sourceLineNo">423</span>  public int getLargeCompactionQueueSize() {<a name="line.423"></a>
+<span class="sourceLineNo">424</span>    return longCompactions.getQueue().size();<a name="line.424"></a>
+<span class="sourceLineNo">425</span>  }<a name="line.425"></a>
+<span class="sourceLineNo">426</span><a name="line.426"></a>
+<span class="sourceLineNo">427</span><a name="line.427"></a>
+<span class="sourceLineNo">428</span>  public int getSmallCompactionQueueSize() {<a name="line.428"></a>
+<span class="sourceLineNo">429</span>    return shortCompactions.getQueue().size();<a name="line.429"></a>
+<span class="sourceLineNo">430</span>  }<a name="line.430"></a>
+<span class="sourceLineNo">431</span><a name="line.431"></a>
+<span class="sourceLineNo">432</span>  public int getSplitQueueSize() {<a name="line.432"></a>
+<span class="sourceLineNo">433</span>    return splits.getQueue().size();<a name="line.433"></a>
+<span class="sourceLineNo">434</span>  }<a name="line.434"></a>
+<span class="sourceLineNo">435</span><a name="line.435"></a>
+<span class="sourceLineNo">436</span>  private boolean shouldSplitRegion() {<a name="line.436"></a>
+<span class="sourceLineNo">437</span>    if(server.getNumberOfOnlineRegions() &gt; 0.9*regionSplitLimit) {<a name="line.437"></a>
+<span class="sourceLineNo">438</span>      LOG.warn("Total number of regions is approaching the upper limit " + regionSplitLimit + ". "<a name="line.438"></a>
+<span class="sourceLineNo">439</span>          + "Please consider taking a look at http://hbase.apache.org/book.html#ops.regionmgt");<a name="line.439"></a>
+<span class="sourceLineNo">440</span>    }<a name="line.440"></a>
+<span class="sourceLineNo">441</span>    return (regionSplitLimit &gt; server.getNumberOfOnlineRegions());<a name="line.441"></a>
+<span class="sourceLineNo">442</span>  }<a name="line.442"></a>
+<span class="sourceLineNo">443</span><a name="line.443"></a>
+<span class="sourceLineNo">444</span>  /**<a name="line.444"></a>
+<span class="sourceLineNo">445</span>   * @return the regionSplitLimit<a name="line.445"></a>
+<span class="sourceLineNo">446</span>   */<a name="line.446"></a>
+<span class="sourceLineNo">447</span>  public int getRegionSplitLimit() {<a name="line.447"></a>
+<span class="sourceLineNo">448</span>    return this.regionSplitLimit;<a name="line.448"></a>
+<span class="sourceLineNo">449</span>  }<a name="line.449"></a>
+<span class="sourceLineNo">450</span><a name="line.450"></a>
+<span class="sourceLineNo">451</span>  private static final Comparator&lt;Runnable&gt; COMPARATOR =<a name="line.451"></a>
+<span class="sourceLineNo">452</span>      new Comparator&lt;Runnable&gt;() {<a name="line.452"></a>
+<span class="sourceLineNo">453</span><a name="line.453"></a>
+<span class="sourceLineNo">454</span>    private int compare(CompactionRequestImpl r1, CompactionRequestImpl r2) {<a name="line.454"></a>
+<span class="sourceLineNo">455</span>      if (r1 == r2) {<a name="line.455"></a>
+<span class="sourceLineNo">456</span>        return 0; //they are the same request<a name="line.456"></a>
+<span class="sourceLineNo">457</span>      }<a name="line.457"></a>
+<span class="sourceLineNo">458</span>      // less first<a name="line.458"></a>
+<span class="sourceLineNo">459</span>      int cmp = Integer.compare(r1.getPriority(), r2.getPriority());<a name="line.459"></a>
+<span class="sourceLineNo">460</span>      if (cmp != 0) {<a name="line.460"></a>
+<span class="sourceLineNo">461</span>        return cmp;<a name="line.461"></a>
+<span class="sourceLineNo">462</span>      }<a name="line.462"></a>
+<span class="sourceLineNo">463</span>      cmp = Long.compare(r1.getSelectionTime(), r2.getSelectionTime());<a name="line.463"></a>
+<span class="sourceLineNo">464</span>      if (cmp != 0) {<a name="line.464"></a>
+<span class="sourceLineNo">465</span>        return cmp;<a name="line.465"></a>
+<span class="sourceLineNo">466</span>      }<a name="line.466"></a>
 <span class="sourceLineNo">467</span><a name="line.467"></a>
-<span class="sourceLineNo">468</span>    @Override<a name="line.468"></a>
-<span class="sourceLineNo">469</span>    public String toString() {<a name="line.469"></a>
-<span class="sourceLineNo">470</span>      return compaction.map(c -&gt; "Request = " + c.getRequest())<a name="line.470"></a>
-<span class="sourceLineNo">471</span>          .orElse("regionName = " + region.toString() + ", storeName = " + store.toString() +<a name="line.471"></a>
-<span class="sourceLineNo">472</span>              ", priority = " + queuedPriority + ", time = " + time);<a name="line.472"></a>
-<span class="sourceLineNo">473</span>    }<a name="line.473"></a>
-<span class="sourceLineNo">474</span><a name="line.474"></a>
-<span class="sourceLineNo">475</span>    private void doCompaction(User user) {<a name="line.475"></a>
-<span class="sourceLineNo">476</span>      CompactionContext c;<a name="line.476"></a>
-<span class="sourceLineNo">477</span>      // Common case - system compaction without a file selection. Select now.<a name="line.477"></a>
-<span class="sourceLineNo">478</span>      if (!compaction.isPresent()) {<a name="line.478"></a>
-<span class="sourceLineNo">479</span>        int oldPriority = this.queuedPriority;<a name="line.479"></a>
-<span class="sourceLineNo">480</span>        this.queuedPriority = this.store.getCompactPriority();<a name="line.480"></a>
-<span class="sourceLineNo">481</span>        if (this.queuedPriority &gt; oldPriority) {<a name="line.481"></a>
-<span class="sourceLineNo">482</span>          // Store priority decreased while we were in queue (due to some other compaction?),<a name="line.482"></a>
-<span class="sourceLineNo">483</span>          // requeue with new priority to avoid blocking potential higher priorities.<a name="line.483"></a>
-<span class="sourceLineNo">484</span>          this.parent.execute(this);<a name="line.484"></a>
-<span class="sourceLineNo">485</span>          return;<a name="line.485"></a>
-<span class="sourceLineNo">486</span>        }<a name="line.486"></a>
-<span class="sourceLineNo">487</span>        Optional&lt;CompactionContext&gt; selected;<a name="line.487"></a>
-<span class="sourceLineNo">488</span>        try {<a name="line.488"></a>
-<span class="sourceLineNo">489</span>          selected = selectCompaction(this.region, this.store, queuedPriority,<a name="line.489"></a>
-<span class="sourceLineNo">490</span>            CompactionLifeCycleTracker.DUMMY, user);<a name="line.490"></a>
-<span class="sourceLineNo">491</span>        } catch (IOException ex) {<a name="line.491"></a>
-<span class="sourceLineNo">492</span>          LOG.error("Compaction selection failed " + this, ex);<a name="line.492"></a>
-<span class="sourceLineNo">493</span>          server.checkFileSystem();<a name="line.493"></a>
-<span class="sourceLineNo">494</span>          region.decrementCompactionsQueuedCount();<a name="line.494"></a>
-<span class="sourceLineNo">495</span>          return;<a name="line.495"></a>
-<span class="sourceLineNo">496</span>        }<a name="line.496"></a>
-<span class="sourceLineNo">497</span>        if (!selected.isPresent()) {<a name="line.497"></a>
-<span class="sourceLineNo">498</span>          region.decrementCompactionsQueuedCount();<a name="line.498"></a>
-<span class="sourceLineNo">499</span>          return; // nothing to do<a name="line.499"></a>
-<span class="sourceLineNo">500</span>        }<a name="line.500"></a>
-<span class="sourceLineNo">501</span>        c = selected.get();<a name="line.501"></a>
-<span class="sourceLineNo">502</span>        assert c.hasSelection();<a name="line.502"></a>
-<span class="sourceLineNo">503</span>        // Now see if we are in correct pool for the size; if not, go to the correct one.<a name="line.503"></a>
-<span class="sourceLineNo">504</span>        // We might end up waiting for a while, so cancel the selection.<a name="line.504"></a>
-<span class="sourceLineNo">505</span><a name="line.505"></a>
-<span class="sourceLineNo">506</span>        ThreadPoolExecutor pool =<a name="line.506"></a>
-<span class="sourceLineNo">507</span>            store.throttleCompaction(c.getRequest().getSize()) ? longCompactions : shortCompactions;<a name="line.507"></a>
-<span class="sourceLineNo">508</span><a name="line.508"></a>
-<span class="sourceLineNo">509</span>        // Long compaction pool can process small job<a name="line.509"></a>
-<span class="sourceLineNo">510</span>        // Short compaction pool should not process large job<a name="line.510"></a>
-<span class="sourceLineNo">511</span>        if (this.parent == shortCompactions &amp;&amp; pool == longCompactions) {<a name="line.511"></a>
-<span class="sourceLineNo">512</span>          this.store.cancelRequestedCompaction(c);<a name="line.512"></a>
-<span class="sourceLineNo">513</span>          this.parent = pool;<a name="line.513"></a>
-<span class="sourceLineNo">514</span>          this.parent.execute(this);<a name="line.514"></a>
-<span class="sourceLineNo">515</span>          retu

<TRUNCATED>

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