http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c4b2cc17/apidocs/src-html/org/apache/hadoop/hbase/ClusterStatus.html
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diff --git a/apidocs/src-html/org/apache/hadoop/hbase/ClusterStatus.html
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index e9f0b87..1a9c79a 100644
--- a/apidocs/src-html/org/apache/hadoop/hbase/ClusterStatus.html
+++ b/apidocs/src-html/org/apache/hadoop/hbase/ClusterStatus.html
@@ -27,473 +27,374 @@
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>package org.apache.hadoop.hbase;<a
name="line.20"></a>
<span class="sourceLineNo">021</span><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.Arrays;<a
name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.Collection;<a
name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.Collections;<a
name="line.25"></a>
+<span class="sourceLineNo">022</span>import
edu.umd.cs.findbugs.annotations.Nullable;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.ArrayList;<a
name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.Arrays;<a
name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.Collection;<a
name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.List;<a
name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.Map;<a
name="line.27"></a>
-<span class="sourceLineNo">028</span><a name="line.28"></a>
-<span class="sourceLineNo">029</span>import
org.apache.hadoop.hbase.shaded.com.google.common.base.Objects;<a
name="line.29"></a>
+<span class="sourceLineNo">028</span>import java.util.stream.Collectors;<a
name="line.28"></a>
+<span class="sourceLineNo">029</span>import
org.apache.hadoop.hbase.master.RegionState;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import
org.apache.yetus.audience.InterfaceAudience;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import
org.apache.hadoop.hbase.master.RegionState;<a name="line.31"></a>
-<span class="sourceLineNo">032</span><a name="line.32"></a>
-<span class="sourceLineNo">033</span>/**<a name="line.33"></a>
-<span class="sourceLineNo">034</span> * Status information on the HBase
cluster.<a name="line.34"></a>
-<span class="sourceLineNo">035</span> * <p><a name="line.35"></a>
-<span class="sourceLineNo">036</span> * <tt>ClusterStatus</tt>
provides clients with information such as:<a name="line.36"></a>
-<span class="sourceLineNo">037</span> * <ul><a name="line.37"></a>
-<span class="sourceLineNo">038</span> * <li>The count and names of
region servers in the cluster.</li><a name="line.38"></a>
-<span class="sourceLineNo">039</span> * <li>The count and names of dead
region servers in the cluster.</li><a name="line.39"></a>
-<span class="sourceLineNo">040</span> * <li>The name of the active
master for the cluster.</li><a name="line.40"></a>
-<span class="sourceLineNo">041</span> * <li>The name(s) of the backup
master(s) for the cluster, if they exist.</li><a name="line.41"></a>
-<span class="sourceLineNo">042</span> * <li>The average cluster
load.</li><a name="line.42"></a>
-<span class="sourceLineNo">043</span> * <li>The number of regions
deployed on the cluster.</li><a name="line.43"></a>
-<span class="sourceLineNo">044</span> * <li>The number of requests since
last report.</li><a name="line.44"></a>
-<span class="sourceLineNo">045</span> * <li>Detailed region server
loading and resource usage information,<a name="line.45"></a>
-<span class="sourceLineNo">046</span> * per server and per
region.</li><a name="line.46"></a>
-<span class="sourceLineNo">047</span> * <li>Regions in transition at
master</li><a name="line.47"></a>
-<span class="sourceLineNo">048</span> * <li>The unique cluster
ID</li><a name="line.48"></a>
-<span class="sourceLineNo">049</span> * </ul><a name="line.49"></a>
-<span class="sourceLineNo">050</span> * <tt>{@link Option}</tt>
provides a way to get desired ClusterStatus information.<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * The following codes will get all the
cluster information.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> * <pre><a name="line.52"></a>
-<span class="sourceLineNo">053</span> * {@code<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * // Original version still works<a
name="line.54"></a>
-<span class="sourceLineNo">055</span> * Admin admin = connection.getAdmin();<a
name="line.55"></a>
-<span class="sourceLineNo">056</span> * ClusterStatus status =
admin.getClusterStatus();<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * // or below, a new version which has
the same effects<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * ClusterStatus status =
admin.getClusterStatus(EnumSet.allOf(Option.class));<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * }<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * </pre><a name="line.60"></a>
-<span class="sourceLineNo">061</span> * If information about live servers is
the only wanted.<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * then codes in the following way:<a
name="line.62"></a>
-<span class="sourceLineNo">063</span> * <pre><a name="line.63"></a>
-<span class="sourceLineNo">064</span> * {@code<a name="line.64"></a>
-<span class="sourceLineNo">065</span> * Admin admin = connection.getAdmin();<a
name="line.65"></a>
-<span class="sourceLineNo">066</span> * ClusterStatus status =
admin.getClusterStatus(EnumSet.of(Option.LIVE_SERVERS));<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * }<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * </pre><a name="line.68"></a>
-<span class="sourceLineNo">069</span> */<a name="line.69"></a>
-<span class="sourceLineNo">070</span>@InterfaceAudience.Public<a
name="line.70"></a>
-<span class="sourceLineNo">071</span>public class ClusterStatus {<a
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-<span class="sourceLineNo">073</span> // TODO: remove this in 3.0<a
name="line.73"></a>
-<span class="sourceLineNo">074</span> private static final byte VERSION =
2;<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span> private String hbaseVersion;<a
name="line.76"></a>
-<span class="sourceLineNo">077</span> private Map<ServerName,
ServerLoad> liveServers;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> private List<ServerName>
deadServers;<a name="line.78"></a>
-<span class="sourceLineNo">079</span> private ServerName master;<a
name="line.79"></a>
-<span class="sourceLineNo">080</span> private List<ServerName>
backupMasters;<a name="line.80"></a>
-<span class="sourceLineNo">081</span> private List<RegionState>
intransition;<a name="line.81"></a>
-<span class="sourceLineNo">082</span> private String clusterId;<a
name="line.82"></a>
-<span class="sourceLineNo">083</span> private String[] masterCoprocessors;<a
name="line.83"></a>
-<span class="sourceLineNo">084</span> private Boolean balancerOn;<a
name="line.84"></a>
-<span class="sourceLineNo">085</span> private int masterInfoPort;<a
name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> /**<a name="line.87"></a>
-<span class="sourceLineNo">088</span> * Use {@link ClusterStatus.Builder} to
construct a ClusterStatus instead.<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * @deprecated As of release 2.0.0,
this will be removed in HBase 3.0.0<a name="line.89"></a>
-<span class="sourceLineNo">090</span> * (<a
href="https://issues.apache.org/jira/browse/HBASE-15511">HBASE-15511</a>).<a
name="line.90"></a>
-<span class="sourceLineNo">091</span> */<a name="line.91"></a>
-<span class="sourceLineNo">092</span> @Deprecated<a name="line.92"></a>
-<span class="sourceLineNo">093</span> public ClusterStatus(final String
hbaseVersion, final String clusterid,<a name="line.93"></a>
-<span class="sourceLineNo">094</span> final Map<ServerName,
ServerLoad> servers,<a name="line.94"></a>
-<span class="sourceLineNo">095</span> final Collection<ServerName>
deadServers,<a name="line.95"></a>
-<span class="sourceLineNo">096</span> final ServerName master,<a
name="line.96"></a>
-<span class="sourceLineNo">097</span> final Collection<ServerName>
backupMasters,<a name="line.97"></a>
-<span class="sourceLineNo">098</span> final List<RegionState>
rit,<a name="line.98"></a>
-<span class="sourceLineNo">099</span> final String[]
masterCoprocessors,<a name="line.99"></a>
-<span class="sourceLineNo">100</span> final Boolean balancerOn,<a
name="line.100"></a>
-<span class="sourceLineNo">101</span> final int masterInfoPort) {<a
name="line.101"></a>
-<span class="sourceLineNo">102</span> // TODO: make this constructor
private<a name="line.102"></a>
-<span class="sourceLineNo">103</span> this.hbaseVersion = hbaseVersion;<a
name="line.103"></a>
-<span class="sourceLineNo">104</span> this.liveServers = servers;<a
name="line.104"></a>
-<span class="sourceLineNo">105</span> this.deadServers = new
ArrayList<>(deadServers);<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.master = master;<a
name="line.106"></a>
-<span class="sourceLineNo">107</span> this.backupMasters = new
ArrayList<>(backupMasters);<a name="line.107"></a>
-<span class="sourceLineNo">108</span> this.intransition = rit;<a
name="line.108"></a>
-<span class="sourceLineNo">109</span> this.clusterId = clusterid;<a
name="line.109"></a>
-<span class="sourceLineNo">110</span> this.masterCoprocessors =
masterCoprocessors;<a name="line.110"></a>
-<span class="sourceLineNo">111</span> this.balancerOn = balancerOn;<a
name="line.111"></a>
-<span class="sourceLineNo">112</span> this.masterInfoPort =
masterInfoPort;<a name="line.112"></a>
-<span class="sourceLineNo">113</span> }<a name="line.113"></a>
-<span class="sourceLineNo">114</span><a name="line.114"></a>
-<span class="sourceLineNo">115</span> private ClusterStatus(final String
hbaseVersion, final String clusterid,<a name="line.115"></a>
-<span class="sourceLineNo">116</span> final Map<ServerName,
ServerLoad> servers,<a name="line.116"></a>
-<span class="sourceLineNo">117</span> final List<ServerName>
deadServers,<a name="line.117"></a>
-<span class="sourceLineNo">118</span> final ServerName master,<a
name="line.118"></a>
-<span class="sourceLineNo">119</span> final List<ServerName>
backupMasters,<a name="line.119"></a>
-<span class="sourceLineNo">120</span> final List<RegionState>
rit,<a name="line.120"></a>
-<span class="sourceLineNo">121</span> final String[]
masterCoprocessors,<a name="line.121"></a>
-<span class="sourceLineNo">122</span> final Boolean balancerOn,<a
name="line.122"></a>
-<span class="sourceLineNo">123</span> final int masterInfoPort) {<a
name="line.123"></a>
-<span class="sourceLineNo">124</span> this.hbaseVersion = hbaseVersion;<a
name="line.124"></a>
-<span class="sourceLineNo">125</span> this.liveServers = servers;<a
name="line.125"></a>
-<span class="sourceLineNo">126</span> this.deadServers = deadServers;<a
name="line.126"></a>
-<span class="sourceLineNo">127</span> this.master = master;<a
name="line.127"></a>
-<span class="sourceLineNo">128</span> this.backupMasters = backupMasters;<a
name="line.128"></a>
-<span class="sourceLineNo">129</span> this.intransition = rit;<a
name="line.129"></a>
-<span class="sourceLineNo">130</span> this.clusterId = clusterid;<a
name="line.130"></a>
-<span class="sourceLineNo">131</span> this.masterCoprocessors =
masterCoprocessors;<a name="line.131"></a>
-<span class="sourceLineNo">132</span> this.balancerOn = balancerOn;<a
name="line.132"></a>
-<span class="sourceLineNo">133</span> this.masterInfoPort =
masterInfoPort;<a name="line.133"></a>
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-<span class="sourceLineNo">136</span> /**<a name="line.136"></a>
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on the dead list<a name="line.137"></a>
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-<span class="sourceLineNo">139</span> public List<ServerName>
getDeadServerNames() {<a name="line.139"></a>
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name="line.140"></a>
-<span class="sourceLineNo">141</span> return Collections.emptyList();<a
name="line.141"></a>
-<span class="sourceLineNo">142</span> }<a name="line.142"></a>
-<span class="sourceLineNo">143</span> return
Collections.unmodifiableList(deadServers);<a name="line.143"></a>
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-<span class="sourceLineNo">146</span> /**<a name="line.146"></a>
-<span class="sourceLineNo">147</span> * @return the number of region servers
in the cluster<a name="line.147"></a>
-<span class="sourceLineNo">148</span> */<a name="line.148"></a>
-<span class="sourceLineNo">149</span> public int getServersSize() {<a
name="line.149"></a>
-<span class="sourceLineNo">150</span> return liveServers != null ?
liveServers.size() : 0;<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> /**<a name="line.153"></a>
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servers in the cluster<a name="line.154"></a>
-<span class="sourceLineNo">155</span> * @deprecated As of release 2.0.0,
this will be removed in HBase 3.0.0<a name="line.155"></a>
-<span class="sourceLineNo">156</span> * (<a
href="https://issues.apache.org/jira/browse/HBASE-13656">HBASE-13656</a>).<a
name="line.156"></a>
-<span class="sourceLineNo">157</span> * Use {@link
#getDeadServersSize()}.<a name="line.157"></a>
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name="line.160"></a>
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name="line.161"></a>
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-<span class="sourceLineNo">164</span> /**<a name="line.164"></a>
-<span class="sourceLineNo">165</span> * @return the number of dead region
servers in the cluster<a name="line.165"></a>
-<span class="sourceLineNo">166</span> */<a name="line.166"></a>
-<span class="sourceLineNo">167</span> public int getDeadServersSize() {<a
name="line.167"></a>
-<span class="sourceLineNo">168</span> return deadServers != null ?
deadServers.size() : 0;<a name="line.168"></a>
-<span class="sourceLineNo">169</span> }<a name="line.169"></a>
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-<span class="sourceLineNo">172</span> /**<a name="line.172"></a>
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name="line.173"></a>
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-<span class="sourceLineNo">175</span> public double getAverageLoad() {<a
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name="line.176"></a>
-<span class="sourceLineNo">177</span> int serverSize = getServersSize();<a
name="line.177"></a>
-<span class="sourceLineNo">178</span> return serverSize != 0 ? (double)load
/ (double)serverSize : 0.0;<a name="line.178"></a>
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-<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 the number of regions
deployed on the cluster<a name="line.182"></a>
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-<span class="sourceLineNo">184</span> public int getRegionsCount() {<a
name="line.184"></a>
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-<span class="sourceLineNo">186</span> if (liveServers != null &&
!liveServers.isEmpty()) {<a name="line.186"></a>
-<span class="sourceLineNo">187</span> for (Map.Entry<ServerName,
ServerLoad> e: this.liveServers.entrySet()) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span> count = count +
e.getValue().getNumberOfRegions();<a name="line.188"></a>
-<span class="sourceLineNo">189</span> }<a name="line.189"></a>
-<span class="sourceLineNo">190</span> }<a name="line.190"></a>
-<span class="sourceLineNo">191</span> return count;<a name="line.191"></a>
+<span class="sourceLineNo">031</span><a name="line.31"></a>
+<span class="sourceLineNo">032</span>import
org.apache.hadoop.hbase.shaded.com.google.common.base.Objects;<a
name="line.32"></a>
+<span class="sourceLineNo">033</span><a name="line.33"></a>
+<span class="sourceLineNo">034</span>/**<a name="line.34"></a>
+<span class="sourceLineNo">035</span> * Status information on the HBase
cluster.<a name="line.35"></a>
+<span class="sourceLineNo">036</span> * <p><a name="line.36"></a>
+<span class="sourceLineNo">037</span> * <tt>ClusterStatus</tt>
provides clients with information such as:<a name="line.37"></a>
+<span class="sourceLineNo">038</span> * <ul><a name="line.38"></a>
+<span class="sourceLineNo">039</span> * <li>The count and names of
region servers in the cluster.</li><a name="line.39"></a>
+<span class="sourceLineNo">040</span> * <li>The count and names of dead
region servers in the cluster.</li><a name="line.40"></a>
+<span class="sourceLineNo">041</span> * <li>The name of the active
master for the cluster.</li><a name="line.41"></a>
+<span class="sourceLineNo">042</span> * <li>The name(s) of the backup
master(s) for the cluster, if they exist.</li><a name="line.42"></a>
+<span class="sourceLineNo">043</span> * <li>The average cluster
load.</li><a name="line.43"></a>
+<span class="sourceLineNo">044</span> * <li>The number of regions
deployed on the cluster.</li><a name="line.44"></a>
+<span class="sourceLineNo">045</span> * <li>The number of requests since
last report.</li><a name="line.45"></a>
+<span class="sourceLineNo">046</span> * <li>Detailed region server
loading and resource usage information,<a name="line.46"></a>
+<span class="sourceLineNo">047</span> * per server and per
region.</li><a name="line.47"></a>
+<span class="sourceLineNo">048</span> * <li>Regions in transition at
master</li><a name="line.48"></a>
+<span class="sourceLineNo">049</span> * <li>The unique cluster
ID</li><a name="line.49"></a>
+<span class="sourceLineNo">050</span> * </ul><a name="line.50"></a>
+<span class="sourceLineNo">051</span> * <tt>{@link
ClusterMetrics.Option}</tt> provides a way to get desired ClusterStatus
information.<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * The following codes will get all the
cluster information.<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * <pre><a name="line.53"></a>
+<span class="sourceLineNo">054</span> * {@code<a name="line.54"></a>
+<span class="sourceLineNo">055</span> * // Original version still works<a
name="line.55"></a>
+<span class="sourceLineNo">056</span> * Admin admin = connection.getAdmin();<a
name="line.56"></a>
+<span class="sourceLineNo">057</span> * ClusterStatus status =
admin.getClusterStatus();<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * // or below, a new version which has
the same effects<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * ClusterStatus status =
admin.getClusterStatus(EnumSet.allOf(Option.class));<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * }<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * </pre><a name="line.61"></a>
+<span class="sourceLineNo">062</span> * If information about live servers is
the only wanted.<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * then codes in the following way:<a
name="line.63"></a>
+<span class="sourceLineNo">064</span> * <pre><a name="line.64"></a>
+<span class="sourceLineNo">065</span> * {@code<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * Admin admin = connection.getAdmin();<a
name="line.66"></a>
+<span class="sourceLineNo">067</span> * ClusterStatus status =
admin.getClusterStatus(EnumSet.of(Option.LIVE_SERVERS));<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * }<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * </pre><a name="line.69"></a>
+<span class="sourceLineNo">070</span> * @deprecated As of release 2.0.0, this
will be removed in HBase 3.0.0<a name="line.70"></a>
+<span class="sourceLineNo">071</span> * Use {@link ClusterMetrics}
instead.<a name="line.71"></a>
+<span class="sourceLineNo">072</span> */<a name="line.72"></a>
+<span class="sourceLineNo">073</span>@InterfaceAudience.Public<a
name="line.73"></a>
+<span class="sourceLineNo">074</span>@Deprecated<a name="line.74"></a>
+<span class="sourceLineNo">075</span>public class ClusterStatus implements
ClusterMetrics {<a name="line.75"></a>
+<span class="sourceLineNo">076</span><a name="line.76"></a>
+<span class="sourceLineNo">077</span> // TODO: remove this in 3.0<a
name="line.77"></a>
+<span class="sourceLineNo">078</span> private static final byte VERSION =
2;<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span> private final ClusterMetrics metrics;<a
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+<span class="sourceLineNo">082</span> /**<a name="line.82"></a>
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