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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/03/27 14:48:27 UTC
[03/51] [partial] hbase-site git commit: Published site at
2a2258656b2fcd92b967131b6c1f037363553bc4.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/e0fb1fde/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionPlacementMaintainer.RandomizedMatrix.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionPlacementMaintainer.RandomizedMatrix.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionPlacementMaintainer.RandomizedMatrix.html
index bcb65f1..a9d5986 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionPlacementMaintainer.RandomizedMatrix.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionPlacementMaintainer.RandomizedMatrix.html
@@ -39,1086 +39,1087 @@
<span class="sourceLineNo">031</span>import java.util.Scanner;<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 org.apache.commons.cli.CommandLine;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.commons.cli.GnuParser;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.commons.cli.HelpFormatter;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.commons.cli.Options;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.commons.cli.ParseException;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.commons.lang3.StringUtils;<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.fs.FileSystem;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ClusterMetrics.Option;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HConstants;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.ServerName;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.TableName;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.Admin;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.ClusterConnection;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.favored.FavoredNodesPlan;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.util.MunkresAssignment;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.slf4j.Logger;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.slf4j.LoggerFactory;<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.AdminService.BlockingInterface;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse;<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span>/**<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * A tool that is used for manipulating and viewing favored nodes information<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * for regions. Run with -h to get a list of the options<a name="line.69"></a>
-<span class="sourceLineNo">070</span> */<a name="line.70"></a>
-<span class="sourceLineNo">071</span>@InterfaceAudience.Private<a name="line.71"></a>
-<span class="sourceLineNo">072</span>// TODO: Remove? Unused. Partially implemented only.<a name="line.72"></a>
-<span class="sourceLineNo">073</span>public class RegionPlacementMaintainer {<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private static final Logger LOG = LoggerFactory.getLogger(RegionPlacementMaintainer.class<a name="line.74"></a>
-<span class="sourceLineNo">075</span> .getName());<a name="line.75"></a>
-<span class="sourceLineNo">076</span> //The cost of a placement that should never be assigned.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> private static final float MAX_COST = Float.POSITIVE_INFINITY;<a name="line.77"></a>
-<span class="sourceLineNo">078</span><a name="line.78"></a>
-<span class="sourceLineNo">079</span> // The cost of a placement that is undesirable but acceptable.<a name="line.79"></a>
-<span class="sourceLineNo">080</span> private static final float AVOID_COST = 100000f;<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span> // The amount by which the cost of a placement is increased if it is the<a name="line.82"></a>
-<span class="sourceLineNo">083</span> // last slot of the server. This is done to more evenly distribute the slop<a name="line.83"></a>
-<span class="sourceLineNo">084</span> // amongst servers.<a name="line.84"></a>
-<span class="sourceLineNo">085</span> private static final float LAST_SLOT_COST_PENALTY = 0.5f;<a name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> // The amount by which the cost of a primary placement is penalized if it is<a name="line.87"></a>
-<span class="sourceLineNo">088</span> // not the host currently serving the region. This is done to minimize moves.<a name="line.88"></a>
-<span class="sourceLineNo">089</span> private static final float NOT_CURRENT_HOST_PENALTY = 0.1f;<a name="line.89"></a>
-<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span> private static boolean USE_MUNKRES_FOR_PLACING_SECONDARY_AND_TERTIARY = false;<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span> private Configuration conf;<a name="line.93"></a>
-<span class="sourceLineNo">094</span> private final boolean enforceLocality;<a name="line.94"></a>
-<span class="sourceLineNo">095</span> private final boolean enforceMinAssignmentMove;<a name="line.95"></a>
-<span class="sourceLineNo">096</span> private RackManager rackManager;<a name="line.96"></a>
-<span class="sourceLineNo">097</span> private Set<TableName> targetTableSet;<a name="line.97"></a>
-<span class="sourceLineNo">098</span> private final Connection connection;<a name="line.98"></a>
-<span class="sourceLineNo">099</span><a name="line.99"></a>
-<span class="sourceLineNo">100</span> public RegionPlacementMaintainer(Configuration conf) {<a name="line.100"></a>
-<span class="sourceLineNo">101</span> this(conf, true, true);<a name="line.101"></a>
-<span class="sourceLineNo">102</span> }<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span> public RegionPlacementMaintainer(Configuration conf, boolean enforceLocality,<a name="line.104"></a>
-<span class="sourceLineNo">105</span> boolean enforceMinAssignmentMove) {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.conf = conf;<a name="line.106"></a>
-<span class="sourceLineNo">107</span> this.enforceLocality = enforceLocality;<a name="line.107"></a>
-<span class="sourceLineNo">108</span> this.enforceMinAssignmentMove = enforceMinAssignmentMove;<a name="line.108"></a>
-<span class="sourceLineNo">109</span> this.targetTableSet = new HashSet<>();<a name="line.109"></a>
-<span class="sourceLineNo">110</span> this.rackManager = new RackManager(conf);<a name="line.110"></a>
-<span class="sourceLineNo">111</span> try {<a name="line.111"></a>
-<span class="sourceLineNo">112</span> this.connection = ConnectionFactory.createConnection(this.conf);<a name="line.112"></a>
-<span class="sourceLineNo">113</span> } catch (IOException e) {<a name="line.113"></a>
-<span class="sourceLineNo">114</span> throw new RuntimeException(e);<a name="line.114"></a>
-<span class="sourceLineNo">115</span> }<a name="line.115"></a>
-<span class="sourceLineNo">116</span> }<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> private static void printHelp(Options opt) {<a name="line.118"></a>
-<span class="sourceLineNo">119</span> new HelpFormatter().printHelp(<a name="line.119"></a>
-<span class="sourceLineNo">120</span> "RegionPlacement < -w | -u | -n | -v | -t | -h | -overwrite -r regionName -f favoredNodes " +<a name="line.120"></a>
-<span class="sourceLineNo">121</span> "-diff>" +<a name="line.121"></a>
-<span class="sourceLineNo">122</span> " [-l false] [-m false] [-d] [-tables t1,t2,...tn] [-zk zk1,zk2,zk3]" +<a name="line.122"></a>
-<span class="sourceLineNo">123</span> " [-fs hdfs://a.b.c.d:9000] [-hbase_root /HBASE]", opt);<a name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> public void setTargetTableName(String[] tableNames) {<a name="line.126"></a>
-<span class="sourceLineNo">127</span> if (tableNames != null) {<a name="line.127"></a>
-<span class="sourceLineNo">128</span> for (String table : tableNames)<a name="line.128"></a>
-<span class="sourceLineNo">129</span> this.targetTableSet.add(TableName.valueOf(table));<a name="line.129"></a>
-<span class="sourceLineNo">130</span> }<a name="line.130"></a>
-<span class="sourceLineNo">131</span> }<a name="line.131"></a>
-<span class="sourceLineNo">132</span><a name="line.132"></a>
-<span class="sourceLineNo">133</span> /**<a name="line.133"></a>
-<span class="sourceLineNo">134</span> * @return the new RegionAssignmentSnapshot<a name="line.134"></a>
-<span class="sourceLineNo">135</span> * @throws IOException<a name="line.135"></a>
-<span class="sourceLineNo">136</span> */<a name="line.136"></a>
-<span class="sourceLineNo">137</span> public SnapshotOfRegionAssignmentFromMeta getRegionAssignmentSnapshot()<a name="line.137"></a>
-<span class="sourceLineNo">138</span> throws IOException {<a name="line.138"></a>
-<span class="sourceLineNo">139</span> SnapshotOfRegionAssignmentFromMeta currentAssignmentShapshot =<a name="line.139"></a>
-<span class="sourceLineNo">140</span> new SnapshotOfRegionAssignmentFromMeta(ConnectionFactory.createConnection(conf));<a name="line.140"></a>
-<span class="sourceLineNo">141</span> currentAssignmentShapshot.initialize();<a name="line.141"></a>
-<span class="sourceLineNo">142</span> return currentAssignmentShapshot;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> }<a name="line.143"></a>
-<span class="sourceLineNo">144</span><a name="line.144"></a>
-<span class="sourceLineNo">145</span> /**<a name="line.145"></a>
-<span class="sourceLineNo">146</span> * Verify the region placement is consistent with the assignment plan<a name="line.146"></a>
-<span class="sourceLineNo">147</span> * @param isDetailMode<a name="line.147"></a>
-<span class="sourceLineNo">148</span> * @return reports<a name="line.148"></a>
-<span class="sourceLineNo">149</span> * @throws IOException<a name="line.149"></a>
-<span class="sourceLineNo">150</span> */<a name="line.150"></a>
-<span class="sourceLineNo">151</span> public List<AssignmentVerificationReport> verifyRegionPlacement(boolean isDetailMode)<a name="line.151"></a>
-<span class="sourceLineNo">152</span> throws IOException {<a name="line.152"></a>
-<span class="sourceLineNo">153</span> System.out.println("Start to verify the region assignment and " +<a name="line.153"></a>
-<span class="sourceLineNo">154</span> "generate the verification report");<a name="line.154"></a>
-<span class="sourceLineNo">155</span> // Get the region assignment snapshot<a name="line.155"></a>
-<span class="sourceLineNo">156</span> SnapshotOfRegionAssignmentFromMeta snapshot = this.getRegionAssignmentSnapshot();<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> // Get all the tables<a name="line.158"></a>
-<span class="sourceLineNo">159</span> Set<TableName> tables = snapshot.getTableSet();<a name="line.159"></a>
-<span class="sourceLineNo">160</span><a name="line.160"></a>
-<span class="sourceLineNo">161</span> // Get the region locality map<a name="line.161"></a>
-<span class="sourceLineNo">162</span> Map<String, Map<String, Float>> regionLocalityMap = null;<a name="line.162"></a>
-<span class="sourceLineNo">163</span> if (this.enforceLocality == true) {<a name="line.163"></a>
-<span class="sourceLineNo">164</span> regionLocalityMap = FSUtils.getRegionDegreeLocalityMappingFromFS(conf);<a name="line.164"></a>
-<span class="sourceLineNo">165</span> }<a name="line.165"></a>
-<span class="sourceLineNo">166</span> List<AssignmentVerificationReport> reports = new ArrayList<>();<a name="line.166"></a>
-<span class="sourceLineNo">167</span> // Iterate all the tables to fill up the verification report<a name="line.167"></a>
-<span class="sourceLineNo">168</span> for (TableName table : tables) {<a name="line.168"></a>
-<span class="sourceLineNo">169</span> if (!this.targetTableSet.isEmpty() &&<a name="line.169"></a>
-<span class="sourceLineNo">170</span> !this.targetTableSet.contains(table)) {<a name="line.170"></a>
-<span class="sourceLineNo">171</span> continue;<a name="line.171"></a>
-<span class="sourceLineNo">172</span> }<a name="line.172"></a>
-<span class="sourceLineNo">173</span> AssignmentVerificationReport report = new AssignmentVerificationReport();<a name="line.173"></a>
-<span class="sourceLineNo">174</span> report.fillUp(table, snapshot, regionLocalityMap);<a name="line.174"></a>
-<span class="sourceLineNo">175</span> report.print(isDetailMode);<a name="line.175"></a>
-<span class="sourceLineNo">176</span> reports.add(report);<a name="line.176"></a>
-<span class="sourceLineNo">177</span> }<a name="line.177"></a>
-<span class="sourceLineNo">178</span> return reports;<a name="line.178"></a>
-<span class="sourceLineNo">179</span> }<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> * Generate the assignment plan for the existing table<a name="line.182"></a>
-<span class="sourceLineNo">183</span> *<a name="line.183"></a>
-<span class="sourceLineNo">184</span> * @param tableName<a name="line.184"></a>
-<span class="sourceLineNo">185</span> * @param assignmentSnapshot<a name="line.185"></a>
-<span class="sourceLineNo">186</span> * @param regionLocalityMap<a name="line.186"></a>
-<span class="sourceLineNo">187</span> * @param plan<a name="line.187"></a>
-<span class="sourceLineNo">188</span> * @param munkresForSecondaryAndTertiary if set on true the assignment plan<a name="line.188"></a>
-<span class="sourceLineNo">189</span> * for the tertiary and secondary will be generated with Munkres algorithm,<a name="line.189"></a>
-<span class="sourceLineNo">190</span> * otherwise will be generated using placeSecondaryAndTertiaryRS<a name="line.190"></a>
-<span class="sourceLineNo">191</span> * @throws IOException<a name="line.191"></a>
-<span class="sourceLineNo">192</span> */<a name="line.192"></a>
-<span class="sourceLineNo">193</span> private void genAssignmentPlan(TableName tableName,<a name="line.193"></a>
-<span class="sourceLineNo">194</span> SnapshotOfRegionAssignmentFromMeta assignmentSnapshot,<a name="line.194"></a>
-<span class="sourceLineNo">195</span> Map<String, Map<String, Float>> regionLocalityMap, FavoredNodesPlan plan,<a name="line.195"></a>
-<span class="sourceLineNo">196</span> boolean munkresForSecondaryAndTertiary) throws IOException {<a name="line.196"></a>
-<span class="sourceLineNo">197</span> // Get the all the regions for the current table<a name="line.197"></a>
-<span class="sourceLineNo">198</span> List<RegionInfo> regions =<a name="line.198"></a>
-<span class="sourceLineNo">199</span> assignmentSnapshot.getTableToRegionMap().get(tableName);<a name="line.199"></a>
-<span class="sourceLineNo">200</span> int numRegions = regions.size();<a name="line.200"></a>
-<span class="sourceLineNo">201</span><a name="line.201"></a>
-<span class="sourceLineNo">202</span> // Get the current assignment map<a name="line.202"></a>
-<span class="sourceLineNo">203</span> Map<RegionInfo, ServerName> currentAssignmentMap =<a name="line.203"></a>
-<span class="sourceLineNo">204</span> assignmentSnapshot.getRegionToRegionServerMap();<a name="line.204"></a>
-<span class="sourceLineNo">205</span><a name="line.205"></a>
-<span class="sourceLineNo">206</span> // Get the all the region servers<a name="line.206"></a>
-<span class="sourceLineNo">207</span> List<ServerName> servers = new ArrayList<>();<a name="line.207"></a>
-<span class="sourceLineNo">208</span> try (Admin admin = this.connection.getAdmin()) {<a name="line.208"></a>
-<span class="sourceLineNo">209</span> servers.addAll(admin.getClusterMetrics(EnumSet.of(Option.LIVE_SERVERS))<a name="line.209"></a>
-<span class="sourceLineNo">210</span> .getLiveServerMetrics().keySet());<a name="line.210"></a>
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-<span class="sourceLineNo">212</span><a name="line.212"></a>
-<span class="sourceLineNo">213</span> LOG.info("Start to generate assignment plan for " + numRegions +<a name="line.213"></a>
-<span class="sourceLineNo">214</span> " regions from table " + tableName + " with " +<a name="line.214"></a>
-<span class="sourceLineNo">215</span> servers.size() + " region servers");<a name="line.215"></a>
-<span class="sourceLineNo">216</span><a name="line.216"></a>
-<span class="sourceLineNo">217</span> int slotsPerServer = (int) Math.ceil((float) numRegions /<a name="line.217"></a>
-<span class="sourceLineNo">218</span> servers.size());<a name="line.218"></a>
-<span class="sourceLineNo">219</span> int regionSlots = slotsPerServer * servers.size();<a name="line.219"></a>
-<span class="sourceLineNo">220</span><a name="line.220"></a>
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-<span class="sourceLineNo">222</span> // pair. These costs are based only on node locality and rack locality, and<a name="line.222"></a>
-<span class="sourceLineNo">223</span> // will be modified later.<a name="line.223"></a>
-<span class="sourceLineNo">224</span> float[][] primaryCost = new float[numRegions][regionSlots];<a name="line.224"></a>
-<span class="sourceLineNo">225</span> float[][] secondaryCost = new float[numRegions][regionSlots];<a name="line.225"></a>
-<span class="sourceLineNo">226</span> float[][] tertiaryCost = new float[numRegions][regionSlots];<a name="line.226"></a>
-<span class="sourceLineNo">227</span><a name="line.227"></a>
-<span class="sourceLineNo">228</span> if (this.enforceLocality && regionLocalityMap != null) {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> // Transform the locality mapping into a 2D array, assuming that any<a name="line.229"></a>
-<span class="sourceLineNo">230</span> // unspecified locality value is 0.<a name="line.230"></a>
-<span class="sourceLineNo">231</span> float[][] localityPerServer = new float[numRegions][regionSlots];<a name="line.231"></a>
-<span class="sourceLineNo">232</span> for (int i = 0; i < numRegions; i++) {<a name="line.232"></a>
-<span class="sourceLineNo">233</span> Map<String, Float> serverLocalityMap =<a name="line.233"></a>
-<span class="sourceLineNo">234</span> regionLocalityMap.get(regions.get(i).getEncodedName());<a name="line.234"></a>
-<span class="sourceLineNo">235</span> if (serverLocalityMap == null) {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> continue;<a name="line.236"></a>
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-<span class="sourceLineNo">238</span> for (int j = 0; j < servers.size(); j++) {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> String serverName = servers.get(j).getHostname();<a name="line.239"></a>
-<span class="sourceLineNo">240</span> if (serverName == null) {<a name="line.240"></a>
-<span class="sourceLineNo">241</span> continue;<a name="line.241"></a>
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-<span class="sourceLineNo">243</span> Float locality = serverLocalityMap.get(serverName);<a name="line.243"></a>
-<span class="sourceLineNo">244</span> if (locality == null) {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> continue;<a name="line.245"></a>
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-<span class="sourceLineNo">247</span> for (int k = 0; k < slotsPerServer; k++) {<a name="line.247"></a>
-<span class="sourceLineNo">248</span> // If we can't find the locality of a region to a server, which occurs<a name="line.248"></a>
-<span class="sourceLineNo">249</span> // because locality is only reported for servers which have some<a name="line.249"></a>
-<span class="sourceLineNo">250</span> // blocks of a region local, then the locality for that pair is 0.<a name="line.250"></a>
-<span class="sourceLineNo">251</span> localityPerServer[i][j * slotsPerServer + k] = locality.floatValue();<a name="line.251"></a>
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-<span class="sourceLineNo">255</span><a name="line.255"></a>
-<span class="sourceLineNo">256</span> // Compute the total rack locality for each region in each rack. The total<a name="line.256"></a>
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