http://git-wip-us.apache.org/repos/asf/hbase-site/blob/e2f20c83/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html index 13f64df..07b6ae0 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html @@ -28,1533 +28,1529 @@ <span class="sourceLineNo">020</span>import java.util.ArrayList;<a name="line.20"></a> <span class="sourceLineNo">021</span>import java.util.Arrays;<a name="line.21"></a> <span class="sourceLineNo">022</span>import java.util.Collection;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import java.util.Collections;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import java.util.Comparator;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import java.util.Deque;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import java.util.HashSet;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import java.util.Iterator;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.Map;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.Map.Entry;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.util.NavigableMap;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.util.Random;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.util.Set;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import java.util.TreeMap;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import java.util.function.Predicate;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import java.util.stream.Collectors;<a name="line.37"></a> -<span class="sourceLineNo">038</span><a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.commons.lang.NotImplementedException;<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.ClusterStatus;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.HDFSBlocksDistribution;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.ServerLoad;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.ServerName;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.TableName;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.Action.Type;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.security.access.AccessControlLists;<a name="line.56"></a> -<span class="sourceLineNo">057</span>import org.apache.hadoop.util.StringUtils;<a name="line.57"></a> -<span class="sourceLineNo">058</span><a name="line.58"></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.Joiner;<a name="line.60"></a> -<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.ArrayListMultimap;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.Lists;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.Sets;<a name="line.63"></a> -<span class="sourceLineNo">064</span>import org.apache.zookeeper.KeeperException;<a name="line.64"></a> -<span class="sourceLineNo">065</span><a name="line.65"></a> -<span class="sourceLineNo">066</span>/**<a name="line.66"></a> -<span class="sourceLineNo">067</span> * The base class for load balancers. It provides the the functions used to by<a name="line.67"></a> -<span class="sourceLineNo">068</span> * {@link org.apache.hadoop.hbase.master.assignment.AssignmentManager} to assign regions<a name="line.68"></a> -<span class="sourceLineNo">069</span> * in the edge cases. It doesn't provide an implementation of the<a name="line.69"></a> -<span class="sourceLineNo">070</span> * actual balancing algorithm.<a name="line.70"></a> -<span class="sourceLineNo">071</span> *<a name="line.71"></a> -<span class="sourceLineNo">072</span> */<a name="line.72"></a> -<span class="sourceLineNo">073</span>public abstract class BaseLoadBalancer implements LoadBalancer {<a name="line.73"></a> -<span class="sourceLineNo">074</span> protected static final int MIN_SERVER_BALANCE = 2;<a name="line.74"></a> -<span class="sourceLineNo">075</span> private volatile boolean stopped = false;<a name="line.75"></a> -<span class="sourceLineNo">076</span><a name="line.76"></a> -<span class="sourceLineNo">077</span> private static final List<HRegionInfo> EMPTY_REGION_LIST = new ArrayList<>(0);<a name="line.77"></a> -<span class="sourceLineNo">078</span><a name="line.78"></a> -<span class="sourceLineNo">079</span> static final Predicate<ServerLoad> IDLE_SERVER_PREDICATOR<a name="line.79"></a> -<span class="sourceLineNo">080</span> = load -> load.getNumberOfRegions() == 0;<a name="line.80"></a> -<span class="sourceLineNo">081</span><a name="line.81"></a> -<span class="sourceLineNo">082</span> protected final RegionLocationFinder regionFinder = new RegionLocationFinder();<a name="line.82"></a> -<span class="sourceLineNo">083</span><a name="line.83"></a> -<span class="sourceLineNo">084</span> private static class DefaultRackManager extends RackManager {<a name="line.84"></a> -<span class="sourceLineNo">085</span> @Override<a name="line.85"></a> -<span class="sourceLineNo">086</span> public String getRack(ServerName server) {<a name="line.86"></a> -<span class="sourceLineNo">087</span> return UNKNOWN_RACK;<a name="line.87"></a> -<span class="sourceLineNo">088</span> }<a name="line.88"></a> -<span class="sourceLineNo">089</span> }<a name="line.89"></a> -<span class="sourceLineNo">090</span><a name="line.90"></a> -<span class="sourceLineNo">091</span> /**<a name="line.91"></a> -<span class="sourceLineNo">092</span> * The constructor that uses the basic MetricsBalancer<a name="line.92"></a> -<span class="sourceLineNo">093</span> */<a name="line.93"></a> -<span class="sourceLineNo">094</span> protected BaseLoadBalancer() {<a name="line.94"></a> -<span class="sourceLineNo">095</span> metricsBalancer = new MetricsBalancer();<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> /**<a name="line.98"></a> -<span class="sourceLineNo">099</span> * This Constructor accepts an instance of MetricsBalancer,<a name="line.99"></a> -<span class="sourceLineNo">100</span> * which will be used instead of creating a new one<a name="line.100"></a> -<span class="sourceLineNo">101</span> */<a name="line.101"></a> -<span class="sourceLineNo">102</span> protected BaseLoadBalancer(MetricsBalancer metricsBalancer) {<a name="line.102"></a> -<span class="sourceLineNo">103</span> this.metricsBalancer = (metricsBalancer != null) ? metricsBalancer : new MetricsBalancer();<a name="line.103"></a> -<span class="sourceLineNo">104</span> }<a name="line.104"></a> -<span class="sourceLineNo">105</span><a name="line.105"></a> -<span class="sourceLineNo">106</span> /**<a name="line.106"></a> -<span class="sourceLineNo">107</span> * An efficient array based implementation similar to ClusterState for keeping<a name="line.107"></a> -<span class="sourceLineNo">108</span> * the status of the cluster in terms of region assignment and distribution.<a name="line.108"></a> -<span class="sourceLineNo">109</span> * LoadBalancers, such as StochasticLoadBalancer uses this Cluster object because of<a name="line.109"></a> -<span class="sourceLineNo">110</span> * hundreds of thousands of hashmap manipulations are very costly, which is why this<a name="line.110"></a> -<span class="sourceLineNo">111</span> * class uses mostly indexes and arrays.<a name="line.111"></a> -<span class="sourceLineNo">112</span> *<a name="line.112"></a> -<span class="sourceLineNo">113</span> * Cluster tracks a list of unassigned regions, region assignments, and the server<a name="line.113"></a> -<span class="sourceLineNo">114</span> * topology in terms of server names, hostnames and racks.<a name="line.114"></a> -<span class="sourceLineNo">115</span> */<a name="line.115"></a> -<span class="sourceLineNo">116</span> protected static class Cluster {<a name="line.116"></a> -<span class="sourceLineNo">117</span> ServerName[] servers;<a name="line.117"></a> -<span class="sourceLineNo">118</span> String[] hosts; // ServerName uniquely identifies a region server. multiple RS can run on the same host<a name="line.118"></a> -<span class="sourceLineNo">119</span> String[] racks;<a name="line.119"></a> -<span class="sourceLineNo">120</span> boolean multiServersPerHost = false; // whether or not any host has more than one server<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> ArrayList<String> tables;<a name="line.122"></a> -<span class="sourceLineNo">123</span> HRegionInfo[] regions;<a name="line.123"></a> -<span class="sourceLineNo">124</span> Deque<BalancerRegionLoad>[] regionLoads;<a name="line.124"></a> -<span class="sourceLineNo">125</span> private RegionLocationFinder regionFinder;<a name="line.125"></a> -<span class="sourceLineNo">126</span><a name="line.126"></a> -<span class="sourceLineNo">127</span> int[][] regionLocations; //regionIndex -> list of serverIndex sorted by locality<a name="line.127"></a> -<span class="sourceLineNo">128</span><a name="line.128"></a> -<span class="sourceLineNo">129</span> int[] serverIndexToHostIndex; //serverIndex -> host index<a name="line.129"></a> -<span class="sourceLineNo">130</span> int[] serverIndexToRackIndex; //serverIndex -> rack index<a name="line.130"></a> -<span class="sourceLineNo">131</span><a name="line.131"></a> -<span class="sourceLineNo">132</span> int[][] regionsPerServer; //serverIndex -> region list<a name="line.132"></a> -<span class="sourceLineNo">133</span> int[][] regionsPerHost; //hostIndex -> list of regions<a name="line.133"></a> -<span class="sourceLineNo">134</span> int[][] regionsPerRack; //rackIndex -> region list<a name="line.134"></a> -<span class="sourceLineNo">135</span> int[][] primariesOfRegionsPerServer; //serverIndex -> sorted list of regions by primary region index<a name="line.135"></a> -<span class="sourceLineNo">136</span> int[][] primariesOfRegionsPerHost; //hostIndex -> sorted list of regions by primary region index<a name="line.136"></a> -<span class="sourceLineNo">137</span> int[][] primariesOfRegionsPerRack; //rackIndex -> sorted list of regions by primary region index<a name="line.137"></a> -<span class="sourceLineNo">138</span><a name="line.138"></a> -<span class="sourceLineNo">139</span> int[][] serversPerHost; //hostIndex -> list of server indexes<a name="line.139"></a> -<span class="sourceLineNo">140</span> int[][] serversPerRack; //rackIndex -> list of server indexes<a name="line.140"></a> -<span class="sourceLineNo">141</span> int[] regionIndexToServerIndex; //regionIndex -> serverIndex<a name="line.141"></a> -<span class="sourceLineNo">142</span> int[] initialRegionIndexToServerIndex; //regionIndex -> serverIndex (initial cluster state)<a name="line.142"></a> -<span class="sourceLineNo">143</span> int[] regionIndexToTableIndex; //regionIndex -> tableIndex<a name="line.143"></a> -<span class="sourceLineNo">144</span> int[][] numRegionsPerServerPerTable; //serverIndex -> tableIndex -> # regions<a name="line.144"></a> -<span class="sourceLineNo">145</span> int[] numMaxRegionsPerTable; //tableIndex -> max number of regions in a single RS<a name="line.145"></a> -<span class="sourceLineNo">146</span> int[] regionIndexToPrimaryIndex; //regionIndex -> regionIndex of the primary<a name="line.146"></a> -<span class="sourceLineNo">147</span> boolean hasRegionReplicas = false; //whether there is regions with replicas<a name="line.147"></a> -<span class="sourceLineNo">148</span><a name="line.148"></a> -<span class="sourceLineNo">149</span> Integer[] serverIndicesSortedByRegionCount;<a name="line.149"></a> -<span class="sourceLineNo">150</span> Integer[] serverIndicesSortedByLocality;<a name="line.150"></a> -<span class="sourceLineNo">151</span><a name="line.151"></a> -<span class="sourceLineNo">152</span> Map<String, Integer> serversToIndex;<a name="line.152"></a> -<span class="sourceLineNo">153</span> Map<String, Integer> hostsToIndex;<a name="line.153"></a> -<span class="sourceLineNo">154</span> Map<String, Integer> racksToIndex;<a name="line.154"></a> -<span class="sourceLineNo">155</span> Map<String, Integer> tablesToIndex;<a name="line.155"></a> -<span class="sourceLineNo">156</span> Map<HRegionInfo, Integer> regionsToIndex;<a name="line.156"></a> -<span class="sourceLineNo">157</span> float[] localityPerServer;<a name="line.157"></a> -<span class="sourceLineNo">158</span><a name="line.158"></a> -<span class="sourceLineNo">159</span> int numServers;<a name="line.159"></a> -<span class="sourceLineNo">160</span> int numHosts;<a name="line.160"></a> -<span class="sourceLineNo">161</span> int numRacks;<a name="line.161"></a> -<span class="sourceLineNo">162</span> int numTables;<a name="line.162"></a> -<span class="sourceLineNo">163</span> int numRegions;<a name="line.163"></a> -<span class="sourceLineNo">164</span><a name="line.164"></a> -<span class="sourceLineNo">165</span> int numMovedRegions = 0; //num moved regions from the initial configuration<a name="line.165"></a> -<span class="sourceLineNo">166</span> Map<ServerName, List<HRegionInfo>> clusterState;<a name="line.166"></a> -<span class="sourceLineNo">167</span><a name="line.167"></a> -<span class="sourceLineNo">168</span> protected final RackManager rackManager;<a name="line.168"></a> -<span class="sourceLineNo">169</span> // Maps region -> rackIndex -> locality of region on rack<a name="line.169"></a> -<span class="sourceLineNo">170</span> private float[][] rackLocalities;<a name="line.170"></a> -<span class="sourceLineNo">171</span> // Maps localityType -> region -> [server|rack]Index with highest locality<a name="line.171"></a> -<span class="sourceLineNo">172</span> private int[][] regionsToMostLocalEntities;<a name="line.172"></a> -<span class="sourceLineNo">173</span><a name="line.173"></a> -<span class="sourceLineNo">174</span> protected Cluster(<a name="line.174"></a> -<span class="sourceLineNo">175</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.175"></a> -<span class="sourceLineNo">176</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.176"></a> -<span class="sourceLineNo">177</span> RegionLocationFinder regionFinder,<a name="line.177"></a> -<span class="sourceLineNo">178</span> RackManager rackManager) {<a name="line.178"></a> -<span class="sourceLineNo">179</span> this(null, clusterState, loads, regionFinder, rackManager);<a name="line.179"></a> -<span class="sourceLineNo">180</span> }<a name="line.180"></a> -<span class="sourceLineNo">181</span><a name="line.181"></a> -<span class="sourceLineNo">182</span> @SuppressWarnings("unchecked")<a name="line.182"></a> -<span class="sourceLineNo">183</span> protected Cluster(<a name="line.183"></a> -<span class="sourceLineNo">184</span> Collection<HRegionInfo> unassignedRegions,<a name="line.184"></a> -<span class="sourceLineNo">185</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.185"></a> -<span class="sourceLineNo">186</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.186"></a> -<span class="sourceLineNo">187</span> RegionLocationFinder regionFinder,<a name="line.187"></a> -<span class="sourceLineNo">188</span> RackManager rackManager) {<a name="line.188"></a> +<span class="sourceLineNo">023</span>import java.util.Comparator;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.util.Deque;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import java.util.HashMap;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import java.util.Iterator;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.util.Map;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.util.Map.Entry;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.NavigableMap;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.util.Random;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import java.util.Set;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import java.util.TreeMap;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import java.util.function.Predicate;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import java.util.stream.Collectors;<a name="line.35"></a> +<span class="sourceLineNo">036</span><a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.commons.lang3.NotImplementedException;<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.ClusterStatus;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HConstants;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HDFSBlocksDistribution;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.ServerLoad;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.ServerName;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.TableName;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.RackManager;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.Action.Type;<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.Joiner;<a name="line.57"></a> +<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.ArrayListMultimap;<a name="line.58"></a> +<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.Lists;<a name="line.59"></a> +<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.Sets;<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> * The base class for load balancers. It provides the the functions used to by<a name="line.63"></a> +<span class="sourceLineNo">064</span> * {@link org.apache.hadoop.hbase.master.assignment.AssignmentManager} to assign regions<a name="line.64"></a> +<span class="sourceLineNo">065</span> * in the edge cases. It doesn't provide an implementation of the<a name="line.65"></a> +<span class="sourceLineNo">066</span> * actual balancing algorithm.<a name="line.66"></a> +<span class="sourceLineNo">067</span> *<a name="line.67"></a> +<span class="sourceLineNo">068</span> */<a name="line.68"></a> +<span class="sourceLineNo">069</span>public abstract class BaseLoadBalancer implements LoadBalancer {<a name="line.69"></a> +<span class="sourceLineNo">070</span> protected static final int MIN_SERVER_BALANCE = 2;<a name="line.70"></a> +<span class="sourceLineNo">071</span> private volatile boolean stopped = false;<a name="line.71"></a> +<span class="sourceLineNo">072</span><a name="line.72"></a> +<span class="sourceLineNo">073</span> private static final List<HRegionInfo> EMPTY_REGION_LIST = new ArrayList<>(0);<a name="line.73"></a> +<span class="sourceLineNo">074</span><a name="line.74"></a> +<span class="sourceLineNo">075</span> static final Predicate<ServerLoad> IDLE_SERVER_PREDICATOR<a name="line.75"></a> +<span class="sourceLineNo">076</span> = load -> load.getNumberOfRegions() == 0;<a name="line.76"></a> +<span class="sourceLineNo">077</span><a name="line.77"></a> +<span class="sourceLineNo">078</span> protected final RegionLocationFinder regionFinder = new RegionLocationFinder();<a name="line.78"></a> +<span class="sourceLineNo">079</span><a name="line.79"></a> +<span class="sourceLineNo">080</span> private static class DefaultRackManager extends RackManager {<a name="line.80"></a> +<span class="sourceLineNo">081</span> @Override<a name="line.81"></a> +<span class="sourceLineNo">082</span> public String getRack(ServerName server) {<a name="line.82"></a> +<span class="sourceLineNo">083</span> return UNKNOWN_RACK;<a name="line.83"></a> +<span class="sourceLineNo">084</span> }<a name="line.84"></a> +<span class="sourceLineNo">085</span> }<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> * The constructor that uses the basic MetricsBalancer<a name="line.88"></a> +<span class="sourceLineNo">089</span> */<a name="line.89"></a> +<span class="sourceLineNo">090</span> protected BaseLoadBalancer() {<a name="line.90"></a> +<span class="sourceLineNo">091</span> metricsBalancer = new MetricsBalancer();<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> /**<a name="line.94"></a> +<span class="sourceLineNo">095</span> * This Constructor accepts an instance of MetricsBalancer,<a name="line.95"></a> +<span class="sourceLineNo">096</span> * which will be used instead of creating a new one<a name="line.96"></a> +<span class="sourceLineNo">097</span> */<a name="line.97"></a> +<span class="sourceLineNo">098</span> protected BaseLoadBalancer(MetricsBalancer metricsBalancer) {<a name="line.98"></a> +<span class="sourceLineNo">099</span> this.metricsBalancer = (metricsBalancer != null) ? metricsBalancer : new MetricsBalancer();<a name="line.99"></a> +<span class="sourceLineNo">100</span> }<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> * An efficient array based implementation similar to ClusterState for keeping<a name="line.103"></a> +<span class="sourceLineNo">104</span> * the status of the cluster in terms of region assignment and distribution.<a name="line.104"></a> +<span class="sourceLineNo">105</span> * LoadBalancers, such as StochasticLoadBalancer uses this Cluster object because of<a name="line.105"></a> +<span class="sourceLineNo">106</span> * hundreds of thousands of hashmap manipulations are very costly, which is why this<a name="line.106"></a> +<span class="sourceLineNo">107</span> * class uses mostly indexes and arrays.<a name="line.107"></a> +<span class="sourceLineNo">108</span> *<a name="line.108"></a> +<span class="sourceLineNo">109</span> * Cluster tracks a list of unassigned regions, region assignments, and the server<a name="line.109"></a> +<span class="sourceLineNo">110</span> * topology in terms of server names, hostnames and racks.<a name="line.110"></a> +<span class="sourceLineNo">111</span> */<a name="line.111"></a> +<span class="sourceLineNo">112</span> protected static class Cluster {<a name="line.112"></a> +<span class="sourceLineNo">113</span> ServerName[] servers;<a name="line.113"></a> +<span class="sourceLineNo">114</span> String[] hosts; // ServerName uniquely identifies a region server. multiple RS can run on the same host<a name="line.114"></a> +<span class="sourceLineNo">115</span> String[] racks;<a name="line.115"></a> +<span class="sourceLineNo">116</span> boolean multiServersPerHost = false; // whether or not any host has more than one server<a name="line.116"></a> +<span class="sourceLineNo">117</span><a name="line.117"></a> +<span class="sourceLineNo">118</span> ArrayList<String> tables;<a name="line.118"></a> +<span class="sourceLineNo">119</span> HRegionInfo[] regions;<a name="line.119"></a> +<span class="sourceLineNo">120</span> Deque<BalancerRegionLoad>[] regionLoads;<a name="line.120"></a> +<span class="sourceLineNo">121</span> private RegionLocationFinder regionFinder;<a name="line.121"></a> +<span class="sourceLineNo">122</span><a name="line.122"></a> +<span class="sourceLineNo">123</span> int[][] regionLocations; //regionIndex -> list of serverIndex sorted by locality<a name="line.123"></a> +<span class="sourceLineNo">124</span><a name="line.124"></a> +<span class="sourceLineNo">125</span> int[] serverIndexToHostIndex; //serverIndex -> host index<a name="line.125"></a> +<span class="sourceLineNo">126</span> int[] serverIndexToRackIndex; //serverIndex -> rack index<a name="line.126"></a> +<span class="sourceLineNo">127</span><a name="line.127"></a> +<span class="sourceLineNo">128</span> int[][] regionsPerServer; //serverIndex -> region list<a name="line.128"></a> +<span class="sourceLineNo">129</span> int[][] regionsPerHost; //hostIndex -> list of regions<a name="line.129"></a> +<span class="sourceLineNo">130</span> int[][] regionsPerRack; //rackIndex -> region list<a name="line.130"></a> +<span class="sourceLineNo">131</span> int[][] primariesOfRegionsPerServer; //serverIndex -> sorted list of regions by primary region index<a name="line.131"></a> +<span class="sourceLineNo">132</span> int[][] primariesOfRegionsPerHost; //hostIndex -> sorted list of regions by primary region index<a name="line.132"></a> +<span class="sourceLineNo">133</span> int[][] primariesOfRegionsPerRack; //rackIndex -> sorted list of regions by primary region index<a name="line.133"></a> +<span class="sourceLineNo">134</span><a name="line.134"></a> +<span class="sourceLineNo">135</span> int[][] serversPerHost; //hostIndex -> list of server indexes<a name="line.135"></a> +<span class="sourceLineNo">136</span> int[][] serversPerRack; //rackIndex -> list of server indexes<a name="line.136"></a> +<span class="sourceLineNo">137</span> int[] regionIndexToServerIndex; //regionIndex -> serverIndex<a name="line.137"></a> +<span class="sourceLineNo">138</span> int[] initialRegionIndexToServerIndex; //regionIndex -> serverIndex (initial cluster state)<a name="line.138"></a> +<span class="sourceLineNo">139</span> int[] regionIndexToTableIndex; //regionIndex -> tableIndex<a name="line.139"></a> +<span class="sourceLineNo">140</span> int[][] numRegionsPerServerPerTable; //serverIndex -> tableIndex -> # regions<a name="line.140"></a> +<span class="sourceLineNo">141</span> int[] numMaxRegionsPerTable; //tableIndex -> max number of regions in a single RS<a name="line.141"></a> +<span class="sourceLineNo">142</span> int[] regionIndexToPrimaryIndex; //regionIndex -> regionIndex of the primary<a name="line.142"></a> +<span class="sourceLineNo">143</span> boolean hasRegionReplicas = false; //whether there is regions with replicas<a name="line.143"></a> +<span class="sourceLineNo">144</span><a name="line.144"></a> +<span class="sourceLineNo">145</span> Integer[] serverIndicesSortedByRegionCount;<a name="line.145"></a> +<span class="sourceLineNo">146</span> Integer[] serverIndicesSortedByLocality;<a name="line.146"></a> +<span class="sourceLineNo">147</span><a name="line.147"></a> +<span class="sourceLineNo">148</span> Map<String, Integer> serversToIndex;<a name="line.148"></a> +<span class="sourceLineNo">149</span> Map<String, Integer> hostsToIndex;<a name="line.149"></a> +<span class="sourceLineNo">150</span> Map<String, Integer> racksToIndex;<a name="line.150"></a> +<span class="sourceLineNo">151</span> Map<String, Integer> tablesToIndex;<a name="line.151"></a> +<span class="sourceLineNo">152</span> Map<HRegionInfo, Integer> regionsToIndex;<a name="line.152"></a> +<span class="sourceLineNo">153</span> float[] localityPerServer;<a name="line.153"></a> +<span class="sourceLineNo">154</span><a name="line.154"></a> +<span class="sourceLineNo">155</span> int numServers;<a name="line.155"></a> +<span class="sourceLineNo">156</span> int numHosts;<a name="line.156"></a> +<span class="sourceLineNo">157</span> int numRacks;<a name="line.157"></a> +<span class="sourceLineNo">158</span> int numTables;<a name="line.158"></a> +<span class="sourceLineNo">159</span> int numRegions;<a name="line.159"></a> +<span class="sourceLineNo">160</span><a name="line.160"></a> +<span class="sourceLineNo">161</span> int numMovedRegions = 0; //num moved regions from the initial configuration<a name="line.161"></a> +<span class="sourceLineNo">162</span> Map<ServerName, List<HRegionInfo>> clusterState;<a name="line.162"></a> +<span class="sourceLineNo">163</span><a name="line.163"></a> +<span class="sourceLineNo">164</span> protected final RackManager rackManager;<a name="line.164"></a> +<span class="sourceLineNo">165</span> // Maps region -> rackIndex -> locality of region on rack<a name="line.165"></a> +<span class="sourceLineNo">166</span> private float[][] rackLocalities;<a name="line.166"></a> +<span class="sourceLineNo">167</span> // Maps localityType -> region -> [server|rack]Index with highest locality<a name="line.167"></a> +<span class="sourceLineNo">168</span> private int[][] regionsToMostLocalEntities;<a name="line.168"></a> +<span class="sourceLineNo">169</span><a name="line.169"></a> +<span class="sourceLineNo">170</span> protected Cluster(<a name="line.170"></a> +<span class="sourceLineNo">171</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.171"></a> +<span class="sourceLineNo">172</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.172"></a> +<span class="sourceLineNo">173</span> RegionLocationFinder regionFinder,<a name="line.173"></a> +<span class="sourceLineNo">174</span> RackManager rackManager) {<a name="line.174"></a> +<span class="sourceLineNo">175</span> this(null, clusterState, loads, regionFinder, rackManager);<a name="line.175"></a> +<span class="sourceLineNo">176</span> }<a name="line.176"></a> +<span class="sourceLineNo">177</span><a name="line.177"></a> +<span class="sourceLineNo">178</span> @SuppressWarnings("unchecked")<a name="line.178"></a> +<span class="sourceLineNo">179</span> protected Cluster(<a name="line.179"></a> +<span class="sourceLineNo">180</span> Collection<HRegionInfo> unassignedRegions,<a name="line.180"></a> +<span class="sourceLineNo">181</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.181"></a> +<span class="sourceLineNo">182</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.182"></a> +<span class="sourceLineNo">183</span> RegionLocationFinder regionFinder,<a name="line.183"></a> +<span class="sourceLineNo">184</span> RackManager rackManager) {<a name="line.184"></a> +<span class="sourceLineNo">185</span><a name="line.185"></a> +<span class="sourceLineNo">186</span> if (unassignedRegions == null) {<a name="line.186"></a> +<span class="sourceLineNo">187</span> unassignedRegions = EMPTY_REGION_LIST;<a name="line.187"></a> +<span class="sourceLineNo">188</span> }<a name="line.188"></a> <span class="sourceLineNo">189</span><a name="line.189"></a> -<span class="sourceLineNo">190</span> if (unassignedRegions == null) {<a name="line.190"></a> -<span class="sourceLineNo">191</span> unassignedRegions = EMPTY_REGION_LIST;<a name="line.191"></a> -<span class="sourceLineNo">192</span> }<a name="line.192"></a> -<span class="sourceLineNo">193</span><a name="line.193"></a> -<span class="sourceLineNo">194</span> serversToIndex = new HashMap<>();<a name="line.194"></a> -<span class="sourceLineNo">195</span> hostsToIndex = new HashMap<>();<a name="line.195"></a> -<span class="sourceLineNo">196</span> racksToIndex = new HashMap<>();<a name="line.196"></a> -<span class="sourceLineNo">197</span> tablesToIndex = new HashMap<>();<a name="line.197"></a> +<span class="sourceLineNo">190</span> serversToIndex = new HashMap<>();<a name="line.190"></a> +<span class="sourceLineNo">191</span> hostsToIndex = new HashMap<>();<a name="line.191"></a> +<span class="sourceLineNo">192</span> racksToIndex = new HashMap<>();<a name="line.192"></a> +<span class="sourceLineNo">193</span> tablesToIndex = new HashMap<>();<a name="line.193"></a> +<span class="sourceLineNo">194</span><a name="line.194"></a> +<span class="sourceLineNo">195</span> //TODO: We should get the list of tables from master<a name="line.195"></a> +<span class="sourceLineNo">196</span> tables = new ArrayList<>();<a name="line.196"></a> +<span class="sourceLineNo">197</span> this.rackManager = rackManager != null ? rackManager : new DefaultRackManager();<a name="line.197"></a> <span class="sourceLineNo">198</span><a name="line.198"></a> -<span class="sourceLineNo">199</span> //TODO: We should get the list of tables from master<a name="line.199"></a> -<span class="sourceLineNo">200</span> tables = new ArrayList<>();<a name="line.200"></a> -<span class="sourceLineNo">201</span> this.rackManager = rackManager != null ? rackManager : new DefaultRackManager();<a name="line.201"></a> -<span class="sourceLineNo">202</span><a name="line.202"></a> -<span class="sourceLineNo">203</span> numRegions = 0;<a name="line.203"></a> -<span class="sourceLineNo">204</span><a name="line.204"></a> -<span class="sourceLineNo">205</span> List<List<Integer>> serversPerHostList = new ArrayList<>();<a name="line.205"></a> -<span class="sourceLineNo">206</span> List<List<Integer>> serversPerRackList = new ArrayList<>();<a name="line.206"></a> -<span class="sourceLineNo">207</span> this.clusterState = clusterState;<a name="line.207"></a> -<span class="sourceLineNo">208</span> this.regionFinder = regionFinder;<a name="line.208"></a> -<span class="sourceLineNo">209</span><a name="line.209"></a> -<span class="sourceLineNo">210</span> // Use servername and port as there can be dead servers in this list. We want everything with<a name="line.210"></a> -<span class="sourceLineNo">211</span> // a matching hostname and port to have the same index.<a name="line.211"></a> -<span class="sourceLineNo">212</span> for (ServerName sn : clusterState.keySet()) {<a name="line.212"></a> -<span class="sourceLineNo">213</span> if (sn == null) {<a name="line.213"></a> -<span class="sourceLineNo">214</span> LOG.warn("TODO: Enable TRACE on BaseLoadBalancer. Empty servername); " +<a name="line.214"></a> -<span class="sourceLineNo">215</span> "skipping; unassigned regions?");<a name="line.215"></a> -<span class="sourceLineNo">216</span> if (LOG.isTraceEnabled()) {<a name="line.216"></a> -<span class="sourceLineNo">217</span> LOG.trace("EMPTY SERVERNAME " + clusterState.toString());<a name="line.217"></a> -<span class="sourceLineNo">218</span> }<a name="line.218"></a> -<span class="sourceLineNo">219</span> continue;<a name="line.219"></a> -<span class="sourceLineNo">220</span> }<a name="line.220"></a> -<span class="sourceLineNo">221</span> if (serversToIndex.get(sn.getAddress().toString()) == null) {<a name="line.221"></a> -<span class="sourceLineNo">222</span> serversToIndex.put(sn.getHostAndPort(), numServers++);<a name="line.222"></a> +<span class="sourceLineNo">199</span> numRegions = 0;<a name="line.199"></a> +<span class="sourceLineNo">200</span><a name="line.200"></a> +<span class="sourceLineNo">201</span> List<List<Integer>> serversPerHostList = new ArrayList<>();<a name="line.201"></a> +<span class="sourceLineNo">202</span> List<List<Integer>> serversPerRackList = new ArrayList<>();<a name="line.202"></a> +<span class="sourceLineNo">203</span> this.clusterState = clusterState;<a name="line.203"></a> +<span class="sourceLineNo">204</span> this.regionFinder = regionFinder;<a name="line.204"></a> +<span class="sourceLineNo">205</span><a name="line.205"></a> +<span class="sourceLineNo">206</span> // Use servername and port as there can be dead servers in this list. We want everything with<a name="line.206"></a> +<span class="sourceLineNo">207</span> // a matching hostname and port to have the same index.<a name="line.207"></a> +<span class="sourceLineNo">208</span> for (ServerName sn : clusterState.keySet()) {<a name="line.208"></a> +<span class="sourceLineNo">209</span> if (sn == null) {<a name="line.209"></a> +<span class="sourceLineNo">210</span> LOG.warn("TODO: Enable TRACE on BaseLoadBalancer. Empty servername); " +<a name="line.210"></a> +<span class="sourceLineNo">211</span> "skipping; unassigned regions?");<a name="line.211"></a> +<span class="sourceLineNo">212</span> if (LOG.isTraceEnabled()) {<a name="line.212"></a> +<span class="sourceLineNo">213</span> LOG.trace("EMPTY SERVERNAME " + clusterState.toString());<a name="line.213"></a> +<span class="sourceLineNo">214</span> }<a name="line.214"></a> +<span class="sourceLineNo">215</span> continue;<a name="line.215"></a> +<span class="sourceLineNo">216</span> }<a name="line.216"></a> +<span class="sourceLineNo">217</span> if (serversToIndex.get(sn.getAddress().toString()) == null) {<a name="line.217"></a> +<span class="sourceLineNo">218</span> serversToIndex.put(sn.getHostAndPort(), numServers++);<a name="line.218"></a> +<span class="sourceLineNo">219</span> }<a name="line.219"></a> +<span class="sourceLineNo">220</span> if (!hostsToIndex.containsKey(sn.getHostname())) {<a name="line.220"></a> +<span class="sourceLineNo">221</span> hostsToIndex.put(sn.getHostname(), numHosts++);<a name="line.221"></a> +<span class="sourceLineNo">222</span> serversPerHostList.add(new ArrayList<>(1));<a name="line.222"></a> <span class="sourceLineNo">223</span> }<a name="line.223"></a> -<span class="sourceLineNo">224</span> if (!hostsToIndex.containsKey(sn.getHostname())) {<a name="line.224"></a> -<span class="sourceLineNo">225</span> hostsToIndex.put(sn.getHostname(), numHosts++);<a name="line.225"></a> -<span class="sourceLineNo">226</span> serversPerHostList.add(new ArrayList<>(1));<a name="line.226"></a> -<span class="sourceLineNo">227</span> }<a name="line.227"></a> +<span class="sourceLineNo">224</span><a name="line.224"></a> +<span class="sourceLineNo">225</span> int serverIndex = serversToIndex.get(sn.getHostAndPort());<a name="line.225"></a> +<span class="sourceLineNo">226</span> int hostIndex = hostsToIndex.get(sn.getHostname());<a name="line.226"></a> +<span class="sourceLineNo">227</span> serversPerHostList.get(hostIndex).add(serverIndex);<a name="line.227"></a> <span class="sourceLineNo">228</span><a name="line.228"></a> -<span class="sourceLineNo">229</span> int serverIndex = serversToIndex.get(sn.getHostAndPort());<a name="line.229"></a> -<span class="sourceLineNo">230</span> int hostIndex = hostsToIndex.get(sn.getHostname());<a name="line.230"></a> -<span class="sourceLineNo">231</span> serversPerHostList.get(hostIndex).add(serverIndex);<a name="line.231"></a> -<span class="sourceLineNo">232</span><a name="line.232"></a> -<span class="sourceLineNo">233</span> String rack = this.rackManager.getRack(sn);<a name="line.233"></a> -<span class="sourceLineNo">234</span> if (!racksToIndex.containsKey(rack)) {<a name="line.234"></a> -<span class="sourceLineNo">235</span> racksToIndex.put(rack, numRacks++);<a name="line.235"></a> -<span class="sourceLineNo">236</span> serversPerRackList.add(new ArrayList<>());<a name="line.236"></a> -<span class="sourceLineNo">237</span> }<a name="line.237"></a> -<span class="sourceLineNo">238</span> int rackIndex = racksToIndex.get(rack);<a name="line.238"></a> -<span class="sourceLineNo">239</span> serversPerRackList.get(rackIndex).add(serverIndex);<a name="line.239"></a> -<span class="sourceLineNo">240</span> }<a name="line.240"></a> -<span class="sourceLineNo">241</span><a name="line.241"></a> -<span class="sourceLineNo">242</span> // Count how many regions there are.<a name="line.242"></a> -<span class="sourceLineNo">243</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.243"></a> -<span class="sourceLineNo">244</span> numRegions += entry.getValue().size();<a name="line.244"></a> -<span class="sourceLineNo">245</span> }<a name="line.245"></a> -<span class="sourceLineNo">246</span> numRegions += unassignedRegions.size();<a name="line.246"></a> -<span class="sourceLineNo">247</span><a name="line.247"></a> -<span class="sourceLineNo">248</span> regionsToIndex = new HashMap<>(numRegions);<a name="line.248"></a> -<span class="sourceLineNo">249</span> servers = new ServerName[numServers];<a name="line.249"></a> -<span class="sourceLineNo">250</span> serversPerHost = new int[numHosts][];<a name="line.250"></a> -<span class="sourceLineNo">251</span> serversPerRack = new int[numRacks][];<a name="line.251"></a> -<span class="sourceLineNo">252</span> regions = new HRegionInfo[numRegions];<a name="line.252"></a> -<span class="sourceLineNo">253</span> regionIndexToServerIndex = new int[numRegions];<a name="line.253"></a> -<span class="sourceLineNo">254</span> initialRegionIndexToServerIndex = new int[numRegions];<a name="line.254"></a> -<span class="sourceLineNo">255</span> regionIndexToTableIndex = new int[numRegions];<a name="line.255"></a> -<span class="sourceLineNo">256</span> regionIndexToPrimaryIndex = new int[numRegions];<a name="line.256"></a> -<span class="sourceLineNo">257</span> regionLoads = new Deque[numRegions];<a name="line.257"></a> -<span class="sourceLineNo">258</span><a name="line.258"></a> -<span class="sourceLineNo">259</span> regionLocations = new int[numRegions][];<a name="line.259"></a> -<span class="sourceLineNo">260</span> serverIndicesSortedByRegionCount = new Integer[numServers];<a name="line.260"></a> -<span class="sourceLineNo">261</span> serverIndicesSortedByLocality = new Integer[numServers];<a name="line.261"></a> -<span class="sourceLineNo">262</span> localityPerServer = new float[numServers];<a name="line.262"></a> -<span class="sourceLineNo">263</span><a name="line.263"></a> -<span class="sourceLineNo">264</span> serverIndexToHostIndex = new int[numServers];<a name="line.264"></a> -<span class="sourceLineNo">265</span> serverIndexToRackIndex = new int[numServers];<a name="line.265"></a> -<span class="sourceLineNo">266</span> regionsPerServer = new int[numServers][];<a name="line.266"></a> -<span class="sourceLineNo">267</span> regionsPerHost = new int[numHosts][];<a name="line.267"></a> -<span class="sourceLineNo">268</span> regionsPerRack = new int[numRacks][];<a name="line.268"></a> -<span class="sourceLineNo">269</span> primariesOfRegionsPerServer = new int[numServers][];<a name="line.269"></a> -<span class="sourceLineNo">270</span> primariesOfRegionsPerHost = new int[numHosts][];<a name="line.270"></a> -<span class="sourceLineNo">271</span> primariesOfRegionsPerRack = new int[numRacks][];<a name="line.271"></a> -<span class="sourceLineNo">272</span><a name="line.272"></a> -<span class="sourceLineNo">273</span> int tableIndex = 0, regionIndex = 0, regionPerServerIndex = 0;<a name="line.273"></a> -<span class="sourceLineNo">274</span><a name="line.274"></a> -<span class="sourceLineNo">275</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.275"></a> -<span class="sourceLineNo">276</span> if (entry.getKey() == null) {<a name="line.276"></a> -<span class="sourceLineNo">277</span> LOG.warn("SERVERNAME IS NULL, skipping " + entry.getValue());<a name="line.277"></a> -<span class="sourceLineNo">278</span> continue;<a name="line.278"></a> -<span class="sourceLineNo">279</span> }<a name="line.279"></a> -<span class="sourceLineNo">280</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.280"></a> -<span class="sourceLineNo">281</span><a name="line.281"></a> -<span class="sourceLineNo">282</span> // keep the servername if this is the first server name for this hostname<a name="line.282"></a> -<span class="sourceLineNo">283</span> // or this servername has the newest startcode.<a name="line.283"></a> -<span class="sourceLineNo">284</span> if (servers[serverIndex] == null ||<a name="line.284"></a> -<span class="sourceLineNo">285</span> servers[serverIndex].getStartcode() < entry.getKey().getStartcode()) {<a name="line.285"></a> -<span class="sourceLineNo">286</span> servers[serverIndex] = entry.getKey();<a name="line.286"></a> -<span class="sourceLineNo">287</span> }<a name="line.287"></a> -<span class="sourceLineNo">288</span><a name="line.288"></a> -<span class="sourceLineNo">289</span> if (regionsPerServer[serverIndex] != null) {<a name="line.289"></a> -<span class="sourceLineNo">290</span> // there is another server with the same hostAndPort in ClusterState.<a name="line.290"></a> -<span class="sourceLineNo">291</span> // allocate the array for the total size<a name="line.291"></a> -<span class="sourceLineNo">292</span> regionsPerServer[serverIndex] = new int[entry.getValue().size() + regionsPerServer[serverIndex].length];<a name="line.292"></a> -<span class="sourceLineNo">293</span> } else {<a name="line.293"></a> -<span class="sourceLineNo">294</span> regionsPerServer[serverIndex] = new int[entry.getValue().size()];<a name="line.294"></a> -<span class="sourceLineNo">295</span> }<a name="line.295"></a> -<span class="sourceLineNo">296</span> primariesOfRegionsPerServer[serverIndex] = new int[regionsPerServer[serverIndex].length];<a name="line.296"></a> -<span class="sourceLineNo">297</span> serverIndicesSortedByRegionCount[serverIndex] = serverIndex;<a name="line.297"></a> -<span class="sourceLineNo">298</span> serverIndicesSortedByLocality[serverIndex] = serverIndex;<a name="line.298"></a> -<span class="sourceLineNo">299</span> }<a name="line.299"></a> -<span class="sourceLineNo">300</span><a name="line.300"></a> -<span class="sourceLineNo">301</span> hosts = new String[numHosts];<a name="line.301"></a> -<span class="sourceLineNo">302</span> for (Entry<String, Integer> entry : hostsToIndex.entrySet()) {<a name="line.302"></a> -<span class="sourceLineNo">303</span> hosts[entry.getValue()] = entry.getKey();<a name="line.303"></a> +<span class="sourceLineNo">229</span> String rack = this.rackManager.getRack(sn);<a name="line.229"></a> +<span class="sourceLineNo">230</span> if (!racksToIndex.containsKey(rack)) {<a name="line.230"></a> +<span class="sourceLineNo">231</span> racksToIndex.put(rack, numRacks++);<a name="line.231"></a> +<span class="sourceLineNo">232</span> serversPerRackList.add(new ArrayList<>());<a name="line.232"></a> +<span class="sourceLineNo">233</span> }<a name="line.233"></a> +<span class="sourceLineNo">234</span> int rackIndex = racksToIndex.get(rack);<a name="line.234"></a> +<span class="sourceLineNo">235</span> serversPerRackList.get(rackIndex).add(serverIndex);<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span><a name="line.237"></a> +<span class="sourceLineNo">238</span> // Count how many regions there are.<a name="line.238"></a> +<span class="sourceLineNo">239</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.239"></a> +<span class="sourceLineNo">240</span> numRegions += entry.getValue().size();<a name="line.240"></a> +<span class="sourceLineNo">241</span> }<a name="line.241"></a> +<span class="sourceLineNo">242</span> numRegions += unassignedRegions.size();<a name="line.242"></a> +<span class="sourceLineNo">243</span><a name="line.243"></a> +<span class="sourceLineNo">244</span> regionsToIndex = new HashMap<>(numRegions);<a name="line.244"></a> +<span class="sourceLineNo">245</span> servers = new ServerName[numServers];<a name="line.245"></a> +<span class="sourceLineNo">246</span> serversPerHost = new int[numHosts][];<a name="line.246"></a> +<span class="sourceLineNo">247</span> serversPerRack = new int[numRacks][];<a name="line.247"></a> +<span class="sourceLineNo">248</span> regions = new HRegionInfo[numRegions];<a name="line.248"></a> +<span class="sourceLineNo">249</span> regionIndexToServerIndex = new int[numRegions];<a name="line.249"></a> +<span class="sourceLineNo">250</span> initialRegionIndexToServerIndex = new int[numRegions];<a name="line.250"></a> +<span class="sourceLineNo">251</span> regionIndexToTableIndex = new int[numRegions];<a name="line.251"></a> +<span class="sourceLineNo">252</span> regionIndexToPrimaryIndex = new int[numRegions];<a name="line.252"></a> +<span class="sourceLineNo">253</span> regionLoads = new Deque[numRegions];<a name="line.253"></a> +<span class="sourceLineNo">254</span><a name="line.254"></a> +<span class="sourceLineNo">255</span> regionLocations = new int[numRegions][];<a name="line.255"></a> +<span class="sourceLineNo">256</span> serverIndicesSortedByRegionCount = new Integer[numServers];<a name="line.256"></a> +<span class="sourceLineNo">257</span> serverIndicesSortedByLocality = new Integer[numServers];<a name="line.257"></a> +<span class="sourceLineNo">258</span> localityPerServer = new float[numServers];<a name="line.258"></a> +<span class="sourceLineNo">259</span><a name="line.259"></a> +<span class="sourceLineNo">260</span> serverIndexToHostIndex = new int[numServers];<a name="line.260"></a> +<span class="sourceLineNo">261</span> serverIndexToRackIndex = new int[numServers];<a name="line.261"></a> +<span class="sourceLineNo">262</span> regionsPerServer = new int[numServers][];<a name="line.262"></a> +<span class="sourceLineNo">263</span> regionsPerHost = new int[numHosts][];<a name="line.263"></a> +<span class="sourceLineNo">264</span> regionsPerRack = new int[numRacks][];<a name="line.264"></a> +<span class="sourceLineNo">265</span> primariesOfRegionsPerServer = new int[numServers][];<a name="line.265"></a> +<span class="sourceLineNo">266</span> primariesOfRegionsPerHost = new int[numHosts][];<a name="line.266"></a> +<span class="sourceLineNo">267</span> primariesOfRegionsPerRack = new int[numRacks][];<a name="line.267"></a> +<span class="sourceLineNo">268</span><a name="line.268"></a> +<span class="sourceLineNo">269</span> int tableIndex = 0, regionIndex = 0, regionPerServerIndex = 0;<a name="line.269"></a> +<span class="sourceLineNo">270</span><a name="line.270"></a> +<span class="sourceLineNo">271</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.271"></a> +<span class="sourceLineNo">272</span> if (entry.getKey() == null) {<a name="line.272"></a> +<span class="sourceLineNo">273</span> LOG.warn("SERVERNAME IS NULL, skipping " + entry.getValue());<a name="line.273"></a> +<span class="sourceLineNo">274</span> continue;<a name="line.274"></a> +<span class="sourceLineNo">275</span> }<a name="line.275"></a> +<span class="sourceLineNo">276</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.276"></a> +<span class="sourceLineNo">277</span><a name="line.277"></a> +<span class="sourceLineNo">278</span> // keep the servername if this is the first server name for this hostname<a name="line.278"></a> +<span class="sourceLineNo">279</span> // or this servername has the newest startcode.<a name="line.279"></a> +<span class="sourceLineNo">280</span> if (servers[serverIndex] == null ||<a name="line.280"></a> +<span class="sourceLineNo">281</span> servers[serverIndex].getStartcode() < entry.getKey().getStartcode()) {<a name="line.281"></a> +<span class="sourceLineNo">282</span> servers[serverIndex] = entry.getKey();<a name="line.282"></a> +<span class="sourceLineNo">283</span> }<a name="line.283"></a> +<span class="sourceLineNo">284</span><a name="line.284"></a> +<span class="sourceLineNo">285</span> if (regionsPerServer[serverIndex] != null) {<a name="line.285"></a> +<span class="sourceLineNo">286</span> // there is another server with the same hostAndPort in ClusterState.<a name="line.286"></a> +<span class="sourceLineNo">287</span> // allocate the array for the total size<a name="line.287"></a> +<span class="sourceLineNo">288</span> regionsPerServer[serverIndex] = new int[entry.getValue().size() + regionsPerServer[serverIndex].length];<a name="line.288"></a> +<span class="sourceLineNo">289</span> } else {<a name="line.289"></a> +<span class="sourceLineNo">290</span> regionsPerServer[serverIndex] = new int[entry.getValue().size()];<a name="line.290"></a> +<span class="sourceLineNo">291</span> }<a name="line.291"></a> +<span class="sourceLineNo">292</span> primariesOfRegionsPerServer[serverIndex] = new int[regionsPerServer[serverIndex].length];<a name="line.292"></a> +<span class="sourceLineNo">293</span> serverIndicesSortedByRegionCount[serverIndex] = serverIndex;<a name="line.293"></a> +<span class="sourceLineNo">294</span> serverIndicesSortedByLocality[serverIndex] = serverIndex;<a name="line.294"></a> +<span class="sourceLineNo">295</span> }<a name="line.295"></a> +<span class="sourceLineNo">296</span><a name="line.296"></a> +<span class="sourceLineNo">297</span> hosts = new String[numHosts];<a name="line.297"></a> +<span class="sourceLineNo">298</span> for (Entry<String, Integer> entry : hostsToIndex.entrySet()) {<a name="line.298"></a> +<span class="sourceLineNo">299</span> hosts[entry.getValue()] = entry.getKey();<a name="line.299"></a> +<span class="sourceLineNo">300</span> }<a name="line.300"></a> +<span class="sourceLineNo">301</span> racks = new String[numRacks];<a name="line.301"></a> +<span class="sourceLineNo">302</span> for (Entry<String, Integer> entry : racksToIndex.entrySet()) {<a name="line.302"></a> +<span class="sourceLineNo">303</span> racks[entry.getValue()] = entry.getKey();<a name="line.303"></a> <span class="sourceLineNo">304</span> }<a name="line.304"></a> -<span class="sourceLineNo">305</span> racks = new String[numRacks];<a name="line.305"></a> -<span class="sourceLineNo">306</span> for (Entry<String, Integer> entry : racksToIndex.entrySet()) {<a name="line.306"></a> -<span class="sourceLineNo">307</span> racks[entry.getValue()] = entry.getKey();<a name="line.307"></a> -<span class="sourceLineNo">308</span> }<a name="line.308"></a> +<span class="sourceLineNo">305</span><a name="line.305"></a> +<span class="sourceLineNo">306</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.306"></a> +<span class="sourceLineNo">307</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.307"></a> +<span class="sourceLineNo">308</span> regionPerServerIndex = 0;<a name="line.308"></a> <span class="sourceLineNo">309</span><a name="line.309"></a> -<span class="sourceLineNo">310</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.310"></a> -<span class="sourceLineNo">311</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.311"></a> -<span class="sourceLineNo">312</span> regionPerServerIndex = 0;<a name="line.312"></a> -<span class="sourceLineNo">313</span><a name="line.313"></a> -<span class="sourceLineNo">314</span> int hostIndex = hostsToIndex.get(entry.getKey().getHostname());<a name="line.314"></a> -<span class="sourceLineNo">315</span> serverIndexToHostIndex[serverIndex] = hostIndex;<a name="line.315"></a> -<span class="sourceLineNo">316</span><a name="line.316"></a> -<span class="sourceLineNo">317</span> int rackIndex = racksToIndex.get(this.rackManager.getRack(entry.getKey()));<a name="line.317"></a> -<span class="sourceLineNo">318</span> serverIndexToRackIndex[serverIndex] = rackIndex;<a name="line.318"></a> -<span class="sourceLineNo">319</span><a name="line.319"></a> -<span class="sourceLineNo">320</span> for (HRegionInfo region : entry.getValue()) {<a name="line.320"></a> -<span class="sourceLineNo">321</span> registerRegion(region, regionIndex, serverIndex, loads, regionFinder);<a name="line.321"></a> -<span class="sourceLineNo">322</span> regionsPerServer[serverIndex][regionPerServerIndex++] = regionIndex;<a name="line.322"></a> -<span class="sourceLineNo">323</span> regionIndex++;<a name="line.323"></a> -<span class="sourceLineNo">324</span> }<a name="line.324"></a> -<span class="sourceLineNo">325</span> }<a name="line.325"></a> -<span class="sourceLineNo">326</span><a name="line.326"></a> -<span class="sourceLineNo">327</span> for (HRegionInfo region : unassignedRegions) {<a 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class="sourceLineNo">338</span> multiServersPerHost = true;<a name="line.338"></a> -<span class="sourceLineNo">339</span> }<a name="line.339"></a> -<span class="sourceLineNo">340</span> }<a name="line.340"></a> -<span class="sourceLineNo">341</span><a name="line.341"></a> -<span class="sourceLineNo">342</span> for (int i = 0; i < serversPerRackList.size(); i++) {<a name="line.342"></a> -<span class="sourceLineNo">343</span> serversPerRack[i] = new int[serversPerRackList.get(i).size()];<a name="line.343"></a> -<span class="sourceLineNo">344</span> for (int j = 0; j < serversPerRack[i].length; j++) {<a name="line.344"></a> -<span class="sourceLineNo">345</span> serversPerRack[i][j] = serversPerRackList.get(i).get(j);<a name="line.345"></a> -<span class="sourceLineNo">346</span> }<a name="line.346"></a> -<span class="sourceLineNo">347</span> }<a name="line.347"></a> -<span class="sourceLineNo">348</span><a name="line.348"></a> -<span class="sourceLineNo">349</span> numTables = 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class="sourceLineNo">369</span> }<a name="line.369"></a> -<span class="sourceLineNo">370</span> }<a name="line.370"></a> -<span class="sourceLineNo">371</span> }<a name="line.371"></a> -<span class="sourceLineNo">372</span><a name="line.372"></a> -<span class="sourceLineNo">373</span> for (int i = 0; i < regions.length; i ++) {<a name="line.373"></a> -<span class="sourceLineNo">374</span> HRegionInfo info = regions[i];<a name="line.374"></a> -<span class="sourceLineNo">375</span> if (RegionReplicaUtil.isDefaultReplica(info)) {<a name="line.375"></a> -<span class="sourceLineNo">376</span> regionIndexToPrimaryIndex[i] = i;<a name="line.376"></a> -<span class="sourceLineNo">377</span> } else {<a name="line.377"></a> -<span class="sourceLineNo">378</span> hasRegionReplicas = true;<a name="line.378"></a> -<span class="sourceLineNo">379</span> HRegionInfo primaryInfo = RegionReplicaUtil.getRegionInfoForDefaultReplica(info);<a name="line.379"></a> -<span class="sourceLineNo">380</span> regionIndexToPrimaryIndex[i] = regionsToIndex.getOrDefault(primaryInfo, -1);<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> for (int i = 0; i < regionsPerServer.length; i++) {<a name="line.384"></a> -<span class="sourceLineNo">385</span> primariesOfRegionsPerServer[i] = new int[regionsPerServer[i].length];<a name="line.385"></a> -<span class="sourceLineNo">386</span> for (int j = 0; j < regionsPerServer[i].length; j++) {<a name="line.386"></a> -<span class="sourceLineNo">387</span> int primaryIndex = regionIndexToPrimaryIndex[regionsPerServer[i][j]];<a name="line.387"></a> -<span class="sourceLineNo">388</span> primariesOfRegionsPerServer[i][j] = primaryIndex;<a name="line.388"></a> -<span class="sourceLineNo">389</span> }<a name="line.389"></a> -<span class="sourceLineNo">390</span> // sort the regions by primaries.<a name="line.390"></a> -<span class="sourceLineNo">391</span> Arrays.sort(primariesOfRegionsPerServer[i]);<a name="line.391"></a> -<span class="sourceLineNo">392</span> }<a name="line.392"></a> -<span class="sourceLineNo">393</span><a name="line.393"></a> -<span class="sourceLineNo">394</span> // compute regionsPerHost<a name="line.394"></a> -<span class="sourceLineNo">395</span> if (multiServersPerHost) {<a name="line.395"></a> -<span class="sourceLineNo">396</span> for (int i = 0 ; i < serversPerHost.length; i++) {<a name="line.396"></a> -<span class="sourceLineNo">397</span> int numRegionsPerHost = 0;<a name="line.397"></a> -<span class="sourceLineNo">398</span> for (int j = 0; j < serversPerHost[i].length; j++) {<a name="line.398"></a> -<span class="sourceLineNo">399</span> numRegionsPerHost += regionsPerServer[serversPerHost[i][j]].length;<a name="line.399"></a> -<span class="sourceLineNo">400</span> }<a name="line.400"></a> -<span class="sourceLineNo">401</span> regionsPerHost[i] = new int[numRegionsPerHost];<a name="line.401"></a> -<span class="sourceLineNo">402</span> primariesOfRegionsPerHost[i] = new int[numRegionsPerHost];<a name="line.402"></a> -<span class="sourceLineNo">403</span> }<a name="line.403"></a> -<span class="sourceLineNo">404</span> for (int i = 0 ; i < serversPerHost.length; i++) {<a name="line.404"></a> -<span class="sourceLineNo">405</span> int numRegionPerHostIndex = 0;<a name="line.405"></a> -<span class="sourceLineNo">406</span> for (int j = 0; j < serversPerHost[i].length; j++) {<a name="line.406"></a> -<span class="sourceLineNo">407</span> for (int k = 0; k < regionsPerServer[serversPerHost[i][j]].length; k++) {<a name="line.407"></a> -<span class="sourceLineNo">408</span> int region = regionsPerServer[serversPerHost[i][j]][k];<a name="line.408"></a> -<span class="sourceLineNo">409</span> regionsPerHost[i][numRegionPerHostIndex] = region;<a name="line.409"></a> -<span class="sourceLineNo">410</span> int primaryIndex = regionIndexToPrimaryIndex[region];<a name="line.410"></a> -<span class="sourceLineNo">411</span> primariesOfRegionsPerHost[i][numRegionPerHostIndex] = primaryIndex;<a name="line.411"></a> -<span class="sourceLineNo">412</span> numRegionPerHostIndex++;<a 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> // sort the regions by primaries.<a name="line.415"></a> -<span class="sourceLineNo">416</span> Arrays.sort(primariesOfRegionsPerHost[i]);<a name="line.416"></a> -<span class="sourceLineNo">417</span> }<a name="line.417"></a> -<span class="sourceLineNo">418</span> }<a name="line.418"></a> -<span class="sourceLineNo">419</span><a name="line.419"></a> -<span class="sourceLineNo">420</span> // compute regionsPerRack<a name="line.420"></a> -<span class="sourceLineNo">421</span> if (numRacks > 1) {<a 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