[22/51] [partial] hbase-site git commit: Published site at .

git-site-role Tue, 31 Oct 2017 08:18:30 -0700
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/35decbe4/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.html
----------------------------------------------------------------------
diff --git 
a/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.html
 
b/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.html
index bfa6836..3bf1fcf 100644
--- 
a/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.html
+++ 
b/devapidocs/src-html/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.html
@@ -37,416 +37,403 @@
 <span class="sourceLineNo">029</span>import java.util.Map;<a 
name="line.29"></a>
 <span class="sourceLineNo">030</span>import java.util.Set;<a 
name="line.30"></a>
 <span class="sourceLineNo">031</span>import java.util.TreeMap;<a 
name="line.31"></a>
-<span class="sourceLineNo">032</span><a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.commons.logging.Log;<a 
name="line.33"></a>
-<span class="sourceLineNo">034</span>import 
org.apache.commons.logging.LogFactory;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import 
org.apache.hadoop.conf.Configuration;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import 
org.apache.hadoop.hbase.ClusterStatus;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import 
org.apache.hadoop.hbase.HBaseIOException;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import 
org.apache.hadoop.hbase.HConstants;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import 
org.apache.hadoop.hbase.ServerName;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import 
org.apache.hadoop.hbase.TableName;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import 
org.apache.hadoop.hbase.client.RegionInfo;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import 
org.apache.hadoop.hbase.constraint.ConstraintException;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import 
org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import 
org.apache.hadoop.hbase.master.MasterServices;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import 
org.apache.hadoop.hbase.master.RegionPlan;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import 
org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer;<a 
name="line.46"></a>
-<span class="sourceLineNo">047</span>import 
org.apache.hadoop.hbase.net.Address;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import 
org.apache.hadoop.util.ReflectionUtils;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import 
org.apache.yetus.audience.InterfaceAudience;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a
 name="line.51"></a>
-<span class="sourceLineNo">052</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.ArrayListMultimap;<a 
name="line.52"></a>
-<span class="sourceLineNo">053</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.LinkedListMultimap;<a 
name="line.53"></a>
-<span class="sourceLineNo">054</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.ListMultimap;<a 
name="line.54"></a>
-<span class="sourceLineNo">055</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.Lists;<a 
name="line.55"></a>
-<span class="sourceLineNo">056</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.Maps;<a 
name="line.56"></a>
-<span class="sourceLineNo">057</span><a name="line.57"></a>
-<span class="sourceLineNo">058</span>/**<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * GroupBasedLoadBalancer, used when 
Region Server Grouping is configured (HBase-6721)<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * It does region balance based on a 
table's group membership.<a name="line.60"></a>
-<span class="sourceLineNo">061</span> *<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * Most assignment methods contain two 
exclusive code paths: Online - when the group<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * table is online and Offline - when it 
is unavailable.<a name="line.63"></a>
-<span class="sourceLineNo">064</span> *<a name="line.64"></a>
-<span class="sourceLineNo">065</span> * During Offline, assignments are 
assigned based on cached information in zookeeper.<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * If unavailable (ie bootstrap) then 
regions are assigned randomly.<a name="line.66"></a>
-<span class="sourceLineNo">067</span> *<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * Once the GROUP table has been 
assigned, the balancer switches to Online and will then<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * start providing appropriate 
assignments for user tables.<a name="line.69"></a>
-<span class="sourceLineNo">070</span> *<a name="line.70"></a>
-<span class="sourceLineNo">071</span> */<a name="line.71"></a>
-<span class="sourceLineNo">072</span>@InterfaceAudience.Private<a 
name="line.72"></a>
-<span class="sourceLineNo">073</span>public class RSGroupBasedLoadBalancer 
implements RSGroupableBalancer {<a name="line.73"></a>
-<span class="sourceLineNo">074</span>  private static final Log LOG = 
LogFactory.getLog(RSGroupBasedLoadBalancer.class);<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span>  private Configuration config;<a 
name="line.76"></a>
-<span class="sourceLineNo">077</span>  private ClusterStatus clusterStatus;<a 
name="line.77"></a>
-<span class="sourceLineNo">078</span>  private MasterServices 
masterServices;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>  private volatile RSGroupInfoManager 
rsGroupInfoManager;<a name="line.79"></a>
-<span class="sourceLineNo">080</span>  private LoadBalancer 
internalBalancer;<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span>  /**<a name="line.82"></a>
-<span class="sourceLineNo">083</span>   * Used by reflection in {@link 
org.apache.hadoop.hbase.master.balancer.LoadBalancerFactory}.<a 
name="line.83"></a>
-<span class="sourceLineNo">084</span>   */<a name="line.84"></a>
-<span class="sourceLineNo">085</span>  @InterfaceAudience.Private<a 
name="line.85"></a>
-<span class="sourceLineNo">086</span>  public RSGroupBasedLoadBalancer() {}<a 
name="line.86"></a>
-<span class="sourceLineNo">087</span><a name="line.87"></a>
-<span class="sourceLineNo">088</span>  @Override<a name="line.88"></a>
-<span class="sourceLineNo">089</span>  public Configuration getConf() {<a 
name="line.89"></a>
-<span class="sourceLineNo">090</span>    return config;<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>  @Override<a name="line.93"></a>
-<span class="sourceLineNo">094</span>  public void setConf(Configuration conf) 
{<a name="line.94"></a>
-<span class="sourceLineNo">095</span>    this.config = conf;<a 
name="line.95"></a>
-<span class="sourceLineNo">096</span>  }<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span>  @Override<a name="line.98"></a>
-<span class="sourceLineNo">099</span>  public void 
setClusterStatus(ClusterStatus st) {<a name="line.99"></a>
-<span class="sourceLineNo">100</span>    this.clusterStatus = st;<a 
name="line.100"></a>
-<span class="sourceLineNo">101</span>  }<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span>  @Override<a name="line.103"></a>
-<span class="sourceLineNo">104</span>  public void 
setMasterServices(MasterServices masterServices) {<a name="line.104"></a>
-<span class="sourceLineNo">105</span>    this.masterServices = 
masterServices;<a name="line.105"></a>
-<span class="sourceLineNo">106</span>  }<a name="line.106"></a>
-<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span>  @Override<a name="line.108"></a>
-<span class="sourceLineNo">109</span>  public List&lt;RegionPlan&gt; 
balanceCluster(TableName tableName, Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt;<a name="line.109"></a>
-<span class="sourceLineNo">110</span>      clusterState) throws 
HBaseIOException {<a name="line.110"></a>
-<span class="sourceLineNo">111</span>    return 
balanceCluster(clusterState);<a name="line.111"></a>
-<span class="sourceLineNo">112</span>  }<a name="line.112"></a>
-<span class="sourceLineNo">113</span><a name="line.113"></a>
-<span class="sourceLineNo">114</span>  @Override<a name="line.114"></a>
-<span class="sourceLineNo">115</span>  public List&lt;RegionPlan&gt; 
balanceCluster(Map&lt;ServerName, List&lt;RegionInfo&gt;&gt; clusterState)<a 
name="line.115"></a>
-<span class="sourceLineNo">116</span>      throws HBaseIOException {<a 
name="line.116"></a>
-<span class="sourceLineNo">117</span>    if (!isOnline()) {<a 
name="line.117"></a>
-<span class="sourceLineNo">118</span>      throw new 
ConstraintException(RSGroupInfoManager.RSGROUP_TABLE_NAME +<a 
name="line.118"></a>
-<span class="sourceLineNo">119</span>          " is not online, unable to 
perform balance");<a name="line.119"></a>
-<span class="sourceLineNo">120</span>    }<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span>    
Map&lt;ServerName,List&lt;RegionInfo&gt;&gt; correctedState = 
correctAssignments(clusterState);<a name="line.122"></a>
-<span class="sourceLineNo">123</span>    List&lt;RegionPlan&gt; regionPlans = 
new ArrayList&lt;&gt;();<a name="line.123"></a>
-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span>    List&lt;RegionInfo&gt; 
misplacedRegions = correctedState.get(LoadBalancer.BOGUS_SERVER_NAME);<a 
name="line.125"></a>
-<span class="sourceLineNo">126</span>    for (RegionInfo regionInfo : 
misplacedRegions) {<a name="line.126"></a>
-<span class="sourceLineNo">127</span>      ServerName serverName = 
findServerForRegion(clusterState, regionInfo);<a name="line.127"></a>
-<span class="sourceLineNo">128</span>      regionPlans.add(new 
RegionPlan(regionInfo, serverName, null));<a name="line.128"></a>
-<span class="sourceLineNo">129</span>    }<a name="line.129"></a>
-<span class="sourceLineNo">130</span>    try {<a name="line.130"></a>
-<span class="sourceLineNo">131</span>      List&lt;RSGroupInfo&gt; rsgi = 
rsGroupInfoManager.listRSGroups();<a name="line.131"></a>
-<span class="sourceLineNo">132</span>      for (RSGroupInfo info: rsgi) {<a 
name="line.132"></a>
-<span class="sourceLineNo">133</span>        Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt; groupClusterState = new HashMap&lt;&gt;();<a 
name="line.133"></a>
-<span class="sourceLineNo">134</span>        Map&lt;TableName, 
Map&lt;ServerName, List&lt;RegionInfo&gt;&gt;&gt; groupClusterLoad = new 
HashMap&lt;&gt;();<a name="line.134"></a>
-<span class="sourceLineNo">135</span>        for (Address sName : 
info.getServers()) {<a name="line.135"></a>
-<span class="sourceLineNo">136</span>          for(ServerName curr: 
clusterState.keySet()) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span>            
if(curr.getAddress().equals(sName)) {<a name="line.137"></a>
-<span class="sourceLineNo">138</span>              groupClusterState.put(curr, 
correctedState.get(curr));<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>
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groupClusterLoad.put(HConstants.ENSEMBLE_TABLE_NAME, groupClusterState);<a 
name="line.142"></a>
-<span class="sourceLineNo">143</span>        
this.internalBalancer.setClusterLoad(groupClusterLoad);<a name="line.143"></a>
-<span class="sourceLineNo">144</span>        List&lt;RegionPlan&gt; groupPlans 
= this.internalBalancer<a name="line.144"></a>
-<span class="sourceLineNo">145</span>            
.balanceCluster(groupClusterState);<a name="line.145"></a>
-<span class="sourceLineNo">146</span>        if (groupPlans != null) {<a 
name="line.146"></a>
-<span class="sourceLineNo">147</span>          
regionPlans.addAll(groupPlans);<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>    } catch (IOException exp) {<a 
name="line.150"></a>
-<span class="sourceLineNo">151</span>      LOG.warn("Exception while balancing 
cluster.", exp);<a name="line.151"></a>
-<span class="sourceLineNo">152</span>      regionPlans.clear();<a 
name="line.152"></a>
-<span class="sourceLineNo">153</span>    }<a name="line.153"></a>
-<span class="sourceLineNo">154</span>    return regionPlans;<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 Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt; roundRobinAssignment(<a name="line.158"></a>
-<span class="sourceLineNo">159</span>      List&lt;RegionInfo&gt; regions, 
List&lt;ServerName&gt; servers) throws HBaseIOException {<a name="line.159"></a>
-<span class="sourceLineNo">160</span>    Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt; assignments = Maps.newHashMap();<a 
name="line.160"></a>
-<span class="sourceLineNo">161</span>    ListMultimap&lt;String,RegionInfo&gt; 
regionMap = ArrayListMultimap.create();<a name="line.161"></a>
-<span class="sourceLineNo">162</span>    ListMultimap&lt;String,ServerName&gt; 
serverMap = ArrayListMultimap.create();<a name="line.162"></a>
-<span class="sourceLineNo">163</span>    generateGroupMaps(regions, servers, 
regionMap, serverMap);<a name="line.163"></a>
-<span class="sourceLineNo">164</span>    for(String groupKey : 
regionMap.keySet()) {<a name="line.164"></a>
-<span class="sourceLineNo">165</span>      if (regionMap.get(groupKey).size() 
&gt; 0) {<a name="line.165"></a>
-<span class="sourceLineNo">166</span>        Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt; result =<a name="line.166"></a>
-<span class="sourceLineNo">167</span>            
this.internalBalancer.roundRobinAssignment(<a name="line.167"></a>
-<span class="sourceLineNo">168</span>                
regionMap.get(groupKey),<a name="line.168"></a>
-<span class="sourceLineNo">169</span>                
serverMap.get(groupKey));<a name="line.169"></a>
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name="line.170"></a>
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if(result.containsKey(LoadBalancer.BOGUS_SERVER_NAME) &amp;&amp;<a 
name="line.171"></a>
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assignments.containsKey(LoadBalancer.BOGUS_SERVER_NAME)){<a name="line.172"></a>
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assignments.get(LoadBalancer.BOGUS_SERVER_NAME).addAll(<a name="line.173"></a>
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result.get(LoadBalancer.BOGUS_SERVER_NAME));<a name="line.174"></a>
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name="line.176"></a>
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List&lt;RegionInfo&gt;&gt; retainAssignment(<a name="line.185"></a>
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regions, List&lt;ServerName&gt; servers) throws HBaseIOException {<a 
name="line.186"></a>
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List&lt;RegionInfo&gt;&gt; assignments = new TreeMap&lt;&gt;();<a 
name="line.188"></a>
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RegionInfo&gt; groupToRegion = ArrayListMultimap.create();<a 
name="line.189"></a>
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misplacedRegions = getMisplacedRegions(regions);<a name="line.190"></a>
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regions.keySet()) {<a name="line.191"></a>
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(!misplacedRegions.contains(region)) {<a name="line.192"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable());<a name="line.193"></a>
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region);<a name="line.194"></a>
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only the regions which have correct<a name="line.197"></a>
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name="line.198"></a>
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groupToRegion.keySet()) {<a name="line.199"></a>
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currentAssignmentMap = new TreeMap&lt;RegionInfo, ServerName&gt;();<a 
name="line.200"></a>
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= groupToRegion.get(key);<a name="line.201"></a>
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rsGroupInfoManager.getRSGroup(key);<a name="line.202"></a>
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candidateList = filterOfflineServers(info, servers);<a name="line.203"></a>
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regionList) {<a name="line.204"></a>
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currentAssignmentMap.put(region, regions.get(region));<a name="line.205"></a>
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{<a name="line.207"></a>
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assignments.putAll(this.internalBalancer.retainAssignment(<a 
name="line.208"></a>
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candidateList));<a name="line.209"></a>
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misplacedRegions) {<a name="line.213"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable());;<a name="line.214"></a>
-<span class="sourceLineNo">215</span>        RSGroupInfo info = 
rsGroupInfoManager.getRSGroup(groupName);<a name="line.215"></a>
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candidateList = filterOfflineServers(info, servers);<a name="line.216"></a>
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this.internalBalancer.randomAssignment(region,<a name="line.217"></a>
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name="line.218"></a>
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(!assignments.containsKey(server)) {<a name="line.220"></a>
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ArrayList&lt;&gt;());<a name="line.221"></a>
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assignments.get(server).add(region);<a name="line.223"></a>
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assign to bogus so it ends up in RIT<a name="line.225"></a>
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if(!assignments.containsKey(LoadBalancer.BOGUS_SERVER_NAME)) {<a 
name="line.226"></a>
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assignments.put(LoadBalancer.BOGUS_SERVER_NAME, new ArrayList&lt;&gt;());<a 
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assignments.get(LoadBalancer.BOGUS_SERVER_NAME).add(region);<a 
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to do online retain assignment", e);<a name="line.234"></a>
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randomAssignment(RegionInfo region,<a name="line.239"></a>
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throws HBaseIOException {<a name="line.240"></a>
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regionMap = LinkedListMultimap.create();<a name="line.241"></a>
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serverMap = LinkedListMultimap.create();<a name="line.242"></a>
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generateGroupMaps(Lists.newArrayList(region), servers, regionMap, serverMap);<a 
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filteredServers = serverMap.get(regionMap.keySet().iterator().next());<a 
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this.internalBalancer.randomAssignment(region, filteredServers);<a 
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name="line.250"></a>
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RegionInfo&gt; regionMap,<a name="line.251"></a>
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ServerName&gt; serverMap) throws HBaseIOException {<a name="line.252"></a>
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{<a name="line.254"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable());<a name="line.255"></a>
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region);<a name="line.259"></a>
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regionMap.keySet()) {<a name="line.261"></a>
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rsGroupInfoManager.getRSGroup(groupKey);<a name="line.262"></a>
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filterOfflineServers(info, servers));<a name="line.263"></a>
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&lt; 1) {<a name="line.264"></a>
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filterOfflineServers(RSGroupInfo RSGroupInfo,<a name="line.273"></a>
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      List&lt;ServerName&gt; onlineServers) {<a name="line.274"></a>
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name="line.275"></a>
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filterServers(RSGroupInfo.getServers(), onlineServers);<a name="line.276"></a>
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to be null. Some regions might be unassigned.");<a name="line.278"></a>
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servers.<a name="line.284"></a>
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name="line.287"></a>
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name="line.288"></a>
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online.<a name="line.289"></a>
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name="line.290"></a>
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filterServers(Collection&lt;Address&gt; servers,<a name="line.292"></a>
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onlineServers) {<a name="line.293"></a>
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= new ArrayList&lt;ServerName&gt;();<a name="line.294"></a>
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if(curr.getAddress().equals(server)) {<a name="line.297"></a>
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getMisplacedRegions(<a name="line.305"></a>
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regions) throws IOException {<a name="line.306"></a>
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misplacedRegions = new HashSet&lt;&gt;();<a name="line.307"></a>
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ServerName&gt; region : regions.entrySet()) {<a name="line.308"></a>
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region.getKey();<a name="line.309"></a>
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region.getValue();<a name="line.310"></a>
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rsGroupInfoManager.getRSGroup(rsGroupInfoManager.<a name="line.311"></a>
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getRSGroupOfTable(regionInfo.getTable()));<a name="line.312"></a>
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&amp;&amp;<a name="line.313"></a>
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!info.containsServer(assignedServer.getAddress()))) {<a name="line.314"></a>
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name="line.315"></a>
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rsGroupInfoManager.getRSGroupOfServer(assignedServer.getAddress());<a 
name="line.316"></a>
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region: " + regionInfo.getRegionNameAsString() +<a name="line.317"></a>
-<span class="sourceLineNo">318</span>            " on server: " + 
assignedServer +<a name="line.318"></a>
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otherInfo +<a name="line.319"></a>
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== null ? "UNKNOWN" : info.getName()));<a name="line.320"></a>
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misplacedRegions.add(regionInfo);<a name="line.321"></a>
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findServerForRegion(<a name="line.327"></a>
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List&lt;RegionInfo&gt;&gt; existingAssignments, RegionInfo region)<a 
name="line.328"></a>
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List&lt;RegionInfo&gt;&gt; entry : existingAssignments.entrySet()) {<a 
name="line.330"></a>
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(entry.getValue().contains(region)) {<a name="line.331"></a>
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name="line.332"></a>
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IllegalStateException("Could not find server for region "<a name="line.336"></a>
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name="line.337"></a>
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List&lt;RegionInfo&gt;&gt; correctAssignments(<a name="line.340"></a>
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List&lt;RegionInfo&gt;&gt; existingAssignments)<a name="line.341"></a>
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name="line.342"></a>
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List&lt;RegionInfo&gt;&gt; correctAssignments = new TreeMap&lt;&gt;();<a 
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misplacedRegions = new LinkedList&lt;&gt;();<a name="line.344"></a>
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correctAssignments.put(LoadBalancer.BOGUS_SERVER_NAME, new 
LinkedList&lt;&gt;());<a name="line.345"></a>
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List&lt;RegionInfo&gt;&gt; assignments : existingAssignments.entrySet()){<a 
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assignments.getKey();<a name="line.347"></a>
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LinkedList&lt;&gt;());<a name="line.348"></a>
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assignments.getValue();<a name="line.349"></a>
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{<a name="line.350"></a>
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rsGroupInfoManager.getRSGroup(<a name="line.353"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable()));<a name="line.354"></a>
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name="line.355"></a>
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null for region of table " + region.getTable(),<a name="line.356"></a>
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(!info.containsServer(sName.getAddress()))) {<a name="line.359"></a>
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correctAssignments.get(LoadBalancer.BOGUS_SERVER_NAME).add(region);<a 
name="line.360"></a>
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correctAssignments.get(sName).add(region);<a name="line.362"></a>
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name="line.367"></a>
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they are assigned to correct groups.<a name="line.368"></a>
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misplacedRegions) {<a name="line.369"></a>
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this.masterServices.getAssignmentManager().unassign(info);<a 
name="line.371"></a>
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name="line.372"></a>
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HBaseIOException {<a name="line.380"></a>
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name="line.382"></a>
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cps =<a name="line.383"></a>
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masterServices.getMasterCoprocessorHost().findCoprocessors(RSGroupAdminEndpoint.class);<a
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name="line.385"></a>
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implementation of GroupAdminEndpoint but found " + cps.size();<a 
name="line.386"></a>
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name="line.387"></a>
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HBaseIOException(msg);<a name="line.388"></a>
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cps.get(0).getGroupInfoManager();<a name="line.390"></a>
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name="line.392"></a>
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to initialize GroupInfoManagerImpl", e);<a name="line.393"></a>
-<span class="sourceLineNo">394</span>    }<a name="line.394"></a>
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name="line.396"></a>
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balancerKlass = config.getClass(HBASE_RSGROUP_LOADBALANCER_CLASS,<a 
name="line.397"></a>
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LoadBalancer.class);<a name="line.398"></a>
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ReflectionUtils.newInstance(balancerKlass, config);<a name="line.399"></a>
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internalBalancer.setMasterServices(masterServices);<a name="line.400"></a>
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internalBalancer.setClusterStatus(clusterStatus);<a name="line.401"></a>
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name="line.402"></a>
-<span class="sourceLineNo">403</span>    internalBalancer.initialize();<a 
name="line.403"></a>
+<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a 
name="line.32"></a>
+<span class="sourceLineNo">033</span>import 
org.apache.commons.logging.LogFactory;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import 
org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import 
org.apache.hadoop.hbase.ClusterStatus;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import 
org.apache.hadoop.hbase.HBaseIOException;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import 
org.apache.hadoop.hbase.HConstants;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import 
org.apache.hadoop.hbase.ServerName;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import 
org.apache.hadoop.hbase.TableName;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import 
org.apache.hadoop.hbase.client.RegionInfo;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import 
org.apache.hadoop.hbase.constraint.ConstraintException;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import 
org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import 
org.apache.hadoop.hbase.master.MasterServices;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import 
org.apache.hadoop.hbase.master.RegionPlan;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import 
org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer;<a 
name="line.45"></a>
+<span class="sourceLineNo">046</span>import 
org.apache.hadoop.hbase.net.Address;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a
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+<span class="sourceLineNo">048</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.ArrayListMultimap;<a 
name="line.48"></a>
+<span class="sourceLineNo">049</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.LinkedListMultimap;<a 
name="line.49"></a>
+<span class="sourceLineNo">050</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.ListMultimap;<a 
name="line.50"></a>
+<span class="sourceLineNo">051</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.Lists;<a 
name="line.51"></a>
+<span class="sourceLineNo">052</span>import 
org.apache.hadoop.hbase.shaded.com.google.common.collect.Maps;<a 
name="line.52"></a>
+<span class="sourceLineNo">053</span>import 
org.apache.hadoop.util.ReflectionUtils;<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>/**<a name="line.56"></a>
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Region Server Grouping is configured (HBase-6721)<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * It does region balance based on a 
table's group membership.<a name="line.58"></a>
+<span class="sourceLineNo">059</span> *<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * Most assignment methods contain two 
exclusive code paths: Online - when the group<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * table is online and Offline - when it 
is unavailable.<a name="line.61"></a>
+<span class="sourceLineNo">062</span> *<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * During Offline, assignments are 
assigned based on cached information in zookeeper.<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * If unavailable (ie bootstrap) then 
regions are assigned randomly.<a name="line.64"></a>
+<span class="sourceLineNo">065</span> *<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * Once the GROUP table has been 
assigned, the balancer switches to Online and will then<a name="line.66"></a>
+<span class="sourceLineNo">067</span> * start providing appropriate 
assignments for user tables.<a name="line.67"></a>
+<span class="sourceLineNo">068</span> *<a name="line.68"></a>
+<span class="sourceLineNo">069</span> */<a name="line.69"></a>
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name="line.70"></a>
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implements RSGroupableBalancer {<a name="line.71"></a>
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LogFactory.getLog(RSGroupBasedLoadBalancer.class);<a name="line.72"></a>
+<span class="sourceLineNo">073</span><a name="line.73"></a>
+<span class="sourceLineNo">074</span>  private Configuration config;<a 
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name="line.75"></a>
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masterServices;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>  private volatile RSGroupInfoManager 
rsGroupInfoManager;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>  private LoadBalancer 
internalBalancer;<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span>  /**<a name="line.80"></a>
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org.apache.hadoop.hbase.master.balancer.LoadBalancerFactory}.<a 
name="line.81"></a>
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assignments.get(LoadBalancer.BOGUS_SERVER_NAME).addAll(<a name="line.171"></a>
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result.get(LoadBalancer.BOGUS_SERVER_NAME));<a name="line.172"></a>
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List&lt;RegionInfo&gt;&gt; retainAssignment(<a name="line.183"></a>
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misplacedRegions = getMisplacedRegions(regions);<a name="line.188"></a>
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candidateList = filterOfflineServers(info, servers);<a name="line.201"></a>
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regionList) {<a name="line.202"></a>
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currentAssignmentMap.put(region, regions.get(region));<a name="line.203"></a>
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{<a name="line.205"></a>
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assignments.putAll(this.internalBalancer.retainAssignment(<a 
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misplacedRegions) {<a name="line.211"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable());;<a name="line.212"></a>
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rsGroupInfoManager.getRSGroup(groupName);<a name="line.213"></a>
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candidateList = filterOfflineServers(info, servers);<a name="line.214"></a>
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assignments.get(server).add(region);<a name="line.221"></a>
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if(!assignments.containsKey(LoadBalancer.BOGUS_SERVER_NAME)) {<a 
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assignments.put(LoadBalancer.BOGUS_SERVER_NAME, new ArrayList&lt;&gt;());<a 
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assignments.get(LoadBalancer.BOGUS_SERVER_NAME).add(region);<a 
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randomAssignment(RegionInfo region,<a name="line.237"></a>
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throws HBaseIOException {<a name="line.238"></a>
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regionMap = LinkedListMultimap.create();<a name="line.239"></a>
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serverMap = LinkedListMultimap.create();<a name="line.240"></a>
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generateGroupMaps(Lists.newArrayList(region), servers, regionMap, serverMap);<a 
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filteredServers = serverMap.get(regionMap.keySet().iterator().next());<a 
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this.internalBalancer.randomAssignment(region, filteredServers);<a 
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{<a name="line.252"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable());<a name="line.253"></a>
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regionMap.keySet()) {<a name="line.259"></a>
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rsGroupInfoManager.getRSGroup(groupKey);<a name="line.260"></a>
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filterOfflineServers(RSGroupInfo RSGroupInfo,<a name="line.271"></a>
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filterServers(RSGroupInfo.getServers(), onlineServers);<a name="line.274"></a>
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filterServers(Collection&lt;Address&gt; servers,<a name="line.290"></a>
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onlineServers) {<a name="line.291"></a>
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= new ArrayList&lt;ServerName&gt;();<a name="line.292"></a>
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if(curr.getAddress().equals(server)) {<a name="line.295"></a>
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+<span class="sourceLineNo">302</span><a name="line.302"></a>
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getMisplacedRegions(<a name="line.303"></a>
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regions) throws IOException {<a name="line.304"></a>
+<span class="sourceLineNo">305</span>    Set&lt;RegionInfo&gt; 
misplacedRegions = new HashSet&lt;&gt;();<a name="line.305"></a>
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ServerName&gt; region : regions.entrySet()) {<a name="line.306"></a>
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region.getKey();<a name="line.307"></a>
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region.getValue();<a name="line.308"></a>
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rsGroupInfoManager.getRSGroup(rsGroupInfoManager.<a name="line.309"></a>
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getRSGroupOfTable(regionInfo.getTable()));<a name="line.310"></a>
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name="line.313"></a>
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rsGroupInfoManager.getRSGroupOfServer(assignedServer.getAddress());<a 
name="line.314"></a>
+<span class="sourceLineNo">315</span>        LOG.debug("Found misplaced 
region: " + regionInfo.getRegionNameAsString() +<a name="line.315"></a>
+<span class="sourceLineNo">316</span>            " on server: " + 
assignedServer +<a name="line.316"></a>
+<span class="sourceLineNo">317</span>            " found in group: " +  
otherInfo +<a name="line.317"></a>
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== null ? "UNKNOWN" : info.getName()));<a name="line.318"></a>
+<span class="sourceLineNo">319</span>        
misplacedRegions.add(regionInfo);<a name="line.319"></a>
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findServerForRegion(<a name="line.325"></a>
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List&lt;RegionInfo&gt;&gt; existingAssignments, RegionInfo region)<a 
name="line.326"></a>
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(entry.getValue().contains(region)) {<a name="line.329"></a>
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+<span class="sourceLineNo">337</span><a name="line.337"></a>
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List&lt;RegionInfo&gt;&gt; correctAssignments(<a name="line.338"></a>
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List&lt;RegionInfo&gt;&gt; existingAssignments)<a name="line.339"></a>
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List&lt;RegionInfo&gt;&gt; correctAssignments = new TreeMap&lt;&gt;();<a 
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correctAssignments.put(LoadBalancer.BOGUS_SERVER_NAME, new 
LinkedList&lt;&gt;());<a name="line.342"></a>
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List&lt;RegionInfo&gt;&gt; assignments : existingAssignments.entrySet()){<a 
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assignments.getKey();<a name="line.344"></a>
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LinkedList&lt;&gt;());<a name="line.345"></a>
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assignments.getValue();<a name="line.346"></a>
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{<a name="line.347"></a>
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name="line.348"></a>
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rsGroupInfoManager.getRSGroup(<a name="line.350"></a>
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rsGroupInfoManager.getRSGroupOfTable(region.getTable()));<a name="line.351"></a>
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name="line.352"></a>
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+<span class="sourceLineNo">355</span>        }<a name="line.355"></a>
+<span class="sourceLineNo">356</span>        if ((info == null) || 
(!info.containsServer(sName.getAddress()))) {<a name="line.356"></a>
+<span class="sourceLineNo">357</span>          
correctAssignments.get(LoadBalancer.BOGUS_SERVER_NAME).add(region);<a 
name="line.357"></a>
+<span class="sourceLineNo">358</span>        } else {<a name="line.358"></a>
+<span class="sourceLineNo">359</span>          
correctAssignments.get(sName).add(region);<a name="line.359"></a>
+<span class="sourceLineNo">360</span>        }<a name="line.360"></a>
+<span class="sourceLineNo">361</span>      }<a name="line.361"></a>
+<span class="sourceLineNo">362</span>    }<a name="line.362"></a>
+<span class="sourceLineNo">363</span>    return correctAssignments;<a 
name="line.363"></a>
+<span class="sourceLineNo">364</span>  }<a name="line.364"></a>
+<span class="sourceLineNo">365</span><a name="line.365"></a>
+<span class="sourceLineNo">366</span>  @Override<a name="line.366"></a>
+<span class="sourceLineNo">367</span>  public void initialize() throws 
HBaseIOException {<a name="line.367"></a>
+<span class="sourceLineNo">368</span>    try {<a name="line.368"></a>
+<span class="sourceLineNo">369</span>      if (rsGroupInfoManager == null) {<a 
name="line.369"></a>
+<span class="sourceLineNo">370</span>        List&lt;RSGroupAdminEndpoint&gt; 
cps =<a name="line.370"></a>
+<span class="sourceLineNo">371</span>          
masterServices.getMasterCoprocessorHost().findCoprocessors(RSGroupAdminEndpoint.class);<a
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+<span class="sourceLineNo">372</span>        if (cps.size() != 1) {<a 
name="line.372"></a>
+<span class="sourceLineNo">373</span>          String msg = "Expected one 
implementation of GroupAdminEndpoint but found " + cps.size();<a 
name="line.373"></a>
+<span class="sourceLineNo">374</span>          LOG.error(msg);<a 
name="line.374"></a>
+<span class="sourceLineNo">375</span>          throw new 
HBaseIOException(msg);<a name="line.375"></a>
+<span class="sourceLineNo">376</span>        }<a name="line.376"></a>
+<span class="sourceLineNo">377</span>        rsGroupInfoManager = 
cps.get(0).getGroupInfoManager();<a name="line.377"></a>
+<span class="sourceLineNo">378</span>      }<a name="line.378"></a>
+<span class="sourceLineNo">379</span>    } catch (IOException e) {<a 
name="line.379"></a>
+<span class="sourceLineNo">380</span>      throw new HBaseIOException("Failed 
to initialize GroupInfoManagerImpl", e);<a name="line.380"></a>
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+<span class="sourceLineNo">382</span><a name="line.382"></a>
+<span class="sourceLineNo">383</span>    // Create the balancer<a 
name="line.383"></a>
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balancerKlass = config.getClass(HBASE_RSGROUP_LOADBALANCER_CLASS,<a 
name="line.384"></a>
+<span class="sourceLineNo">385</span>        StochasticLoadBalancer.class, 
LoadBalancer.class);<a name="line.385"></a>
+<span class="sourceLineNo">386</span>    internalBalancer = 
ReflectionUtils.newInstance(balancerKlass, config);<a name="line.386"></a>
+<span class="sourceLineNo">387</span>    
internalBalancer.setMasterServices(masterServices);<a name="line.387"></a>
+<span class="sourceLineNo">388</span>    
internalBalancer.setClusterStatus(clusterStatus);<a name="line.388"></a>
+<span class="sourceLineNo">389</span>    internalBalancer.setConf(config);<a 
name="line.389"></a>
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name="line.390"></a>
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+<span class="sourceLineNo">392</span><a name="line.392"></a>
+<span class="sourceLineNo">393</span>  public boolean isOnline() {<a 
name="line.393"></a>
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return false;<a name="line.394"></a>
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this.rsGroupInfoManager.isOnline();<a name="line.395"></a>
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+<span class="sourceLineNo">397</span><a name="line.397"></a>
+<span class="sourceLineNo">398</span>  @Override<a name="line.398"></a>
+<span class="sourceLineNo">399</span>  public void 
setClusterLoad(Map&lt;TableName, Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt;&gt; clusterLoad) {<a name="line.399"></a>
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+<span class="sourceLineNo">401</span><a name="line.401"></a>
+<span class="sourceLineNo">402</span>  @Override<a name="line.402"></a>
+<span class="sourceLineNo">403</span>  public void regionOnline(RegionInfo 
regionInfo, ServerName sn) {<a name="line.403"></a>
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 <span class="sourceLineNo">405</span><a name="line.405"></a>
-<span class="sourceLineNo">406</span>  public boolean isOnline() {<a 
name="line.406"></a>
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return false;<a name="line.407"></a>
-<span class="sourceLineNo">408</span>    return 
this.rsGroupInfoManager.isOnline();<a name="line.408"></a>
-<span class="sourceLineNo">409</span>  }<a name="line.409"></a>
-<span class="sourceLineNo">410</span><a name="line.410"></a>
-<span class="sourceLineNo">411</span>  @Override<a name="line.411"></a>
-<span class="sourceLineNo">412</span>  public void 
setClusterLoad(Map&lt;TableName, Map&lt;ServerName, 
List&lt;RegionInfo&gt;&gt;&gt; clusterLoad) {<a name="line.412"></a>
+<span class="sourceLineNo">406</span>  @Override<a name="line.406"></a>
+<span class="sourceLineNo">407</span>  public void regionOffline(RegionInfo 
regionInfo) {<a name="line.407"></a>
+<span class="sourceLineNo">408</span>  }<a name="line.408"></a>
+<span class="sourceLineNo">409</span><a name="line.409"></a>
+<span class="sourceLineNo">410</span>  @Override<a name="line.410"></a>
+<span class="sourceLineNo">411</span>  public void 
onConfigurationChange(Configuration conf) {<a name="line.411"></a>
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name="line.412"></a>
 <span class="sourceLineNo">413</span>  }<a name="line.413"></a>
 <span class="sourceLineNo">414</span><a name="line.414"></a>
 <span class="sourceLineNo">415</span>  @Override<a name="line.415"></a>
-<span class="sourceLineNo">416</span>  public void regionOnline(RegionInfo 
regionInfo, ServerName sn) {<a name="line.416"></a>
+<span class="sourceLineNo">416</span>  public void stop(String why) {<a 
name="line.416"></a>
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 <span class="sourceLineNo">419</span>  @Override<a name="line.419"></a>
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-<span class="sourceLineNo">423</span>  @Override<a name="line.423"></a>
-<span class="sourceLineNo">424</span>  public void 
onConfigurationChange(Configuration conf) {<a name="line.424"></a>
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name="line.429"></a>
-<span class="sourceLineNo">430</span>  }<a name="line.430"></a>
-<span class="sourceLineNo">431</span><a name="line.431"></a>
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setRsGroupInfoManager(RSGroupInfoManager rsGroupInfoManager) {<a 
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rsGroupInfoManager;<a name="line.439"></a>
-<span class="sourceLineNo">440</span>  }<a name="line.440"></a>
-<span class="sourceLineNo">441</span>}<a name="line.441"></a>
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+<span class="sourceLineNo">423</span><a name="line.423"></a>
+<span class="sourceLineNo">424</span>  @VisibleForTesting<a 
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+<span class="sourceLineNo">425</span>  public void 
setRsGroupInfoManager(RSGroupInfoManager rsGroupInfoManager) {<a 
name="line.425"></a>
+<span class="sourceLineNo">426</span>    this.rsGroupInfoManager = 
rsGroupInfoManager;<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>
[22/51] [partial] hbase-site git commit: Published site at .

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