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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.master;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.Closeable;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.IOException;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.text.DecimalFormat;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.ArrayList;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.HashMap;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.HashSet;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.List;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.Map;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.Random;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.Scanner;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.Set;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.TreeMap;</span> |
| <span class="source-line-no">032</span><span id="line-32">import java.util.concurrent.ThreadLocalRandom;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.commons.lang3.StringUtils;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.fs.FileSystem;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.HBaseConfiguration;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.client.AsyncClusterConnection;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.client.AsyncRegionServerAdmin;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.client.ClusterConnectionFactory;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.client.ConnectionFactory;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.client.RegionInfo;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.favored.FavoredNodesPlan;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.security.User;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.apache.hadoop.hbase.util.FSUtils;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.apache.hadoop.hbase.util.FutureUtils;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.util.MunkresAssignment;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.util.Pair;</span> |
| <span class="source-line-no">052</span><span id="line-52">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.slf4j.Logger;</span> |
| <span class="source-line-no">054</span><span id="line-54">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">055</span><span id="line-55"></span> |
| <span class="source-line-no">056</span><span id="line-56">import org.apache.hbase.thirdparty.com.google.common.io.Closeables;</span> |
| <span class="source-line-no">057</span><span id="line-57">import org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine;</span> |
| <span class="source-line-no">058</span><span id="line-58">import org.apache.hbase.thirdparty.org.apache.commons.cli.GnuParser;</span> |
| <span class="source-line-no">059</span><span id="line-59">import org.apache.hbase.thirdparty.org.apache.commons.cli.HelpFormatter;</span> |
| <span class="source-line-no">060</span><span id="line-60">import org.apache.hbase.thirdparty.org.apache.commons.cli.Options;</span> |
| <span class="source-line-no">061</span><span id="line-61">import org.apache.hbase.thirdparty.org.apache.commons.cli.ParseException;</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63">import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;</span> |
| <span class="source-line-no">064</span><span id="line-64">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest;</span> |
| <span class="source-line-no">065</span><span id="line-65">import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.UpdateFavoredNodesResponse;</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67">/**</span> |
| <span class="source-line-no">068</span><span id="line-68"> * A tool that is used for manipulating and viewing favored nodes information for regions. Run with</span> |
| <span class="source-line-no">069</span><span id="line-69"> * -h to get a list of the options</span> |
| <span class="source-line-no">070</span><span id="line-70"> */</span> |
| <span class="source-line-no">071</span><span id="line-71">@InterfaceAudience.Private</span> |
| <span class="source-line-no">072</span><span id="line-72">// TODO: Remove? Unused. Partially implemented only.</span> |
| <span class="source-line-no">073</span><span id="line-73">public class RegionPlacementMaintainer implements Closeable {</span> |
| <span class="source-line-no">074</span><span id="line-74"> private static final Logger LOG =</span> |
| <span class="source-line-no">075</span><span id="line-75"> LoggerFactory.getLogger(RegionPlacementMaintainer.class.getName());</span> |
| <span class="source-line-no">076</span><span id="line-76"> // The cost of a placement that should never be assigned.</span> |
| <span class="source-line-no">077</span><span id="line-77"> private static final float MAX_COST = Float.POSITIVE_INFINITY;</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> // The cost of a placement that is undesirable but acceptable.</span> |
| <span class="source-line-no">080</span><span id="line-80"> private static final float AVOID_COST = 100000f;</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> // The amount by which the cost of a placement is increased if it is the</span> |
| <span class="source-line-no">083</span><span id="line-83"> // last slot of the server. This is done to more evenly distribute the slop</span> |
| <span class="source-line-no">084</span><span id="line-84"> // amongst servers.</span> |
| <span class="source-line-no">085</span><span id="line-85"> private static final float LAST_SLOT_COST_PENALTY = 0.5f;</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> // The amount by which the cost of a primary placement is penalized if it is</span> |
| <span class="source-line-no">088</span><span id="line-88"> // not the host currently serving the region. This is done to minimize moves.</span> |
| <span class="source-line-no">089</span><span id="line-89"> private static final float NOT_CURRENT_HOST_PENALTY = 0.1f;</span> |
| <span class="source-line-no">090</span><span id="line-90"></span> |
| <span class="source-line-no">091</span><span id="line-91"> private static boolean USE_MUNKRES_FOR_PLACING_SECONDARY_AND_TERTIARY = false;</span> |
| <span class="source-line-no">092</span><span id="line-92"></span> |
| <span class="source-line-no">093</span><span id="line-93"> private Configuration conf;</span> |
| <span class="source-line-no">094</span><span id="line-94"> private final boolean enforceLocality;</span> |
| <span class="source-line-no">095</span><span id="line-95"> private final boolean enforceMinAssignmentMove;</span> |
| <span class="source-line-no">096</span><span id="line-96"> private RackManager rackManager;</span> |
| <span class="source-line-no">097</span><span id="line-97"> private Set<TableName> targetTableSet;</span> |
| <span class="source-line-no">098</span><span id="line-98"> private AsyncClusterConnection connection;</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> public RegionPlacementMaintainer(Configuration conf) throws IOException {</span> |
| <span class="source-line-no">101</span><span id="line-101"> this(conf, true, true);</span> |
| <span class="source-line-no">102</span><span id="line-102"> }</span> |
| <span class="source-line-no">103</span><span id="line-103"></span> |
| <span class="source-line-no">104</span><span id="line-104"> public RegionPlacementMaintainer(Configuration conf, boolean enforceLocality,</span> |
| <span class="source-line-no">105</span><span id="line-105"> boolean enforceMinAssignmentMove) {</span> |
| <span class="source-line-no">106</span><span id="line-106"> this.conf = conf;</span> |
| <span class="source-line-no">107</span><span id="line-107"> this.enforceLocality = enforceLocality;</span> |
| <span class="source-line-no">108</span><span id="line-108"> this.enforceMinAssignmentMove = enforceMinAssignmentMove;</span> |
| <span class="source-line-no">109</span><span id="line-109"> this.targetTableSet = new HashSet<>();</span> |
| <span class="source-line-no">110</span><span id="line-110"> this.rackManager = new RackManager(conf);</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"></span> |
| <span class="source-line-no">113</span><span id="line-113"> private static void printHelp(Options opt) {</span> |
| <span class="source-line-no">114</span><span id="line-114"> new HelpFormatter().printHelp(</span> |
| <span class="source-line-no">115</span><span id="line-115"> "RegionPlacement < -w | -u | -n | -v | -t | -h | -overwrite -r regionName -f favoredNodes "</span> |
| <span class="source-line-no">116</span><span id="line-116"> + "-diff>" + " [-l false] [-m false] [-d] [-tables t1,t2,...tn] [-zk zk1,zk2,zk3]"</span> |
| <span class="source-line-no">117</span><span id="line-117"> + " [-fs hdfs://a.b.c.d:9000] [-hbase_root /HBASE]",</span> |
| <span class="source-line-no">118</span><span id="line-118"> opt);</span> |
| <span class="source-line-no">119</span><span id="line-119"> }</span> |
| <span class="source-line-no">120</span><span id="line-120"></span> |
| <span class="source-line-no">121</span><span id="line-121"> private AsyncClusterConnection getConnection() throws IOException {</span> |
| <span class="source-line-no">122</span><span id="line-122"> if (connection == null) {</span> |
| <span class="source-line-no">123</span><span id="line-123"> connection =</span> |
| <span class="source-line-no">124</span><span id="line-124"> ClusterConnectionFactory.createAsyncClusterConnection(this.conf, null, User.getCurrent());</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"> return connection;</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"></span> |
| <span class="source-line-no">129</span><span id="line-129"> public void setTargetTableName(String[] tableNames) {</span> |
| <span class="source-line-no">130</span><span id="line-130"> if (tableNames != null) {</span> |
| <span class="source-line-no">131</span><span id="line-131"> for (String table : tableNames)</span> |
| <span class="source-line-no">132</span><span id="line-132"> this.targetTableSet.add(TableName.valueOf(table));</span> |
| <span class="source-line-no">133</span><span id="line-133"> }</span> |
| <span class="source-line-no">134</span><span id="line-134"> }</span> |
| <span class="source-line-no">135</span><span id="line-135"></span> |
| <span class="source-line-no">136</span><span id="line-136"> /** Returns the new RegionAssignmentSnapshot */</span> |
| <span class="source-line-no">137</span><span id="line-137"> public SnapshotOfRegionAssignmentFromMeta getRegionAssignmentSnapshot() throws IOException {</span> |
| <span class="source-line-no">138</span><span id="line-138"> SnapshotOfRegionAssignmentFromMeta currentAssignmentShapshot =</span> |
| <span class="source-line-no">139</span><span id="line-139"> new SnapshotOfRegionAssignmentFromMeta(ConnectionFactory.createConnection(conf));</span> |
| <span class="source-line-no">140</span><span id="line-140"> currentAssignmentShapshot.initialize();</span> |
| <span class="source-line-no">141</span><span id="line-141"> return currentAssignmentShapshot;</span> |
| <span class="source-line-no">142</span><span id="line-142"> }</span> |
| <span class="source-line-no">143</span><span id="line-143"></span> |
| <span class="source-line-no">144</span><span id="line-144"> /**</span> |
| <span class="source-line-no">145</span><span id="line-145"> * Verify the region placement is consistent with the assignment plan</span> |
| <span class="source-line-no">146</span><span id="line-146"> */</span> |
| <span class="source-line-no">147</span><span id="line-147"> public List<AssignmentVerificationReport> verifyRegionPlacement(boolean isDetailMode)</span> |
| <span class="source-line-no">148</span><span id="line-148"> throws IOException {</span> |
| <span class="source-line-no">149</span><span id="line-149"> System.out</span> |
| <span class="source-line-no">150</span><span id="line-150"> .println("Start to verify the region assignment and " + "generate the verification report");</span> |
| <span class="source-line-no">151</span><span id="line-151"> // Get the region assignment snapshot</span> |
| <span class="source-line-no">152</span><span id="line-152"> SnapshotOfRegionAssignmentFromMeta snapshot = this.getRegionAssignmentSnapshot();</span> |
| <span class="source-line-no">153</span><span id="line-153"></span> |
| <span class="source-line-no">154</span><span id="line-154"> // Get all the tables</span> |
| <span class="source-line-no">155</span><span id="line-155"> Set<TableName> tables = snapshot.getTableSet();</span> |
| <span class="source-line-no">156</span><span id="line-156"></span> |
| <span class="source-line-no">157</span><span id="line-157"> // Get the region locality map</span> |
| <span class="source-line-no">158</span><span id="line-158"> Map<String, Map<String, Float>> regionLocalityMap = null;</span> |
| <span class="source-line-no">159</span><span id="line-159"> if (this.enforceLocality == true) {</span> |
| <span class="source-line-no">160</span><span id="line-160"> regionLocalityMap = FSUtils.getRegionDegreeLocalityMappingFromFS(conf);</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"> List<AssignmentVerificationReport> reports = new ArrayList<>();</span> |
| <span class="source-line-no">163</span><span id="line-163"> // Iterate all the tables to fill up the verification report</span> |
| <span class="source-line-no">164</span><span id="line-164"> for (TableName table : tables) {</span> |
| <span class="source-line-no">165</span><span id="line-165"> if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {</span> |
| <span class="source-line-no">166</span><span id="line-166"> continue;</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"> AssignmentVerificationReport report = new AssignmentVerificationReport();</span> |
| <span class="source-line-no">169</span><span id="line-169"> report.fillUp(table, snapshot, regionLocalityMap);</span> |
| <span class="source-line-no">170</span><span id="line-170"> report.print(isDetailMode);</span> |
| <span class="source-line-no">171</span><span id="line-171"> reports.add(report);</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173"> return reports;</span> |
| <span class="source-line-no">174</span><span id="line-174"> }</span> |
| <span class="source-line-no">175</span><span id="line-175"></span> |
| <span class="source-line-no">176</span><span id="line-176"> /**</span> |
| <span class="source-line-no">177</span><span id="line-177"> * Generate the assignment plan for the existing table</span> |
| <span class="source-line-no">178</span><span id="line-178"> * @param munkresForSecondaryAndTertiary if set on true the assignment plan for the tertiary and</span> |
| <span class="source-line-no">179</span><span id="line-179"> * secondary will be generated with Munkres algorithm,</span> |
| <span class="source-line-no">180</span><span id="line-180"> * otherwise will be generated using</span> |
| <span class="source-line-no">181</span><span id="line-181"> * placeSecondaryAndTertiaryRS</span> |
| <span class="source-line-no">182</span><span id="line-182"> */</span> |
| <span class="source-line-no">183</span><span id="line-183"> private void genAssignmentPlan(TableName tableName,</span> |
| <span class="source-line-no">184</span><span id="line-184"> SnapshotOfRegionAssignmentFromMeta assignmentSnapshot,</span> |
| <span class="source-line-no">185</span><span id="line-185"> Map<String, Map<String, Float>> regionLocalityMap, FavoredNodesPlan plan,</span> |
| <span class="source-line-no">186</span><span id="line-186"> boolean munkresForSecondaryAndTertiary) throws IOException {</span> |
| <span class="source-line-no">187</span><span id="line-187"> // Get the all the regions for the current table</span> |
| <span class="source-line-no">188</span><span id="line-188"> List<RegionInfo> regions = assignmentSnapshot.getTableToRegionMap().get(tableName);</span> |
| <span class="source-line-no">189</span><span id="line-189"> int numRegions = regions.size();</span> |
| <span class="source-line-no">190</span><span id="line-190"></span> |
| <span class="source-line-no">191</span><span id="line-191"> // Get the current assignment map</span> |
| <span class="source-line-no">192</span><span id="line-192"> Map<RegionInfo, ServerName> currentAssignmentMap =</span> |
| <span class="source-line-no">193</span><span id="line-193"> assignmentSnapshot.getRegionToRegionServerMap();</span> |
| <span class="source-line-no">194</span><span id="line-194"></span> |
| <span class="source-line-no">195</span><span id="line-195"> // Get the all the region servers</span> |
| <span class="source-line-no">196</span><span id="line-196"> List<ServerName> servers = new ArrayList<>();</span> |
| <span class="source-line-no">197</span><span id="line-197"> servers.addAll(FutureUtils.get(getConnection().getAdmin().getRegionServers()));</span> |
| <span class="source-line-no">198</span><span id="line-198"></span> |
| <span class="source-line-no">199</span><span id="line-199"> LOG.info("Start to generate assignment plan for " + numRegions + " regions from table "</span> |
| <span class="source-line-no">200</span><span id="line-200"> + tableName + " with " + servers.size() + " region servers");</span> |
| <span class="source-line-no">201</span><span id="line-201"></span> |
| <span class="source-line-no">202</span><span id="line-202"> int slotsPerServer = (int) Math.ceil((float) numRegions / servers.size());</span> |
| <span class="source-line-no">203</span><span id="line-203"> int regionSlots = slotsPerServer * servers.size();</span> |
| <span class="source-line-no">204</span><span id="line-204"></span> |
| <span class="source-line-no">205</span><span id="line-205"> // Compute the primary, secondary and tertiary costs for each region/server</span> |
| <span class="source-line-no">206</span><span id="line-206"> // pair. These costs are based only on node locality and rack locality, and</span> |
| <span class="source-line-no">207</span><span id="line-207"> // will be modified later.</span> |
| <span class="source-line-no">208</span><span id="line-208"> float[][] primaryCost = new float[numRegions][regionSlots];</span> |
| <span class="source-line-no">209</span><span id="line-209"> float[][] secondaryCost = new float[numRegions][regionSlots];</span> |
| <span class="source-line-no">210</span><span id="line-210"> float[][] tertiaryCost = new float[numRegions][regionSlots];</span> |
| <span class="source-line-no">211</span><span id="line-211"></span> |
| <span class="source-line-no">212</span><span id="line-212"> if (this.enforceLocality && regionLocalityMap != null) {</span> |
| <span class="source-line-no">213</span><span id="line-213"> // Transform the locality mapping into a 2D array, assuming that any</span> |
| <span class="source-line-no">214</span><span id="line-214"> // unspecified locality value is 0.</span> |
| <span class="source-line-no">215</span><span id="line-215"> float[][] localityPerServer = new float[numRegions][regionSlots];</span> |
| <span class="source-line-no">216</span><span id="line-216"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">217</span><span id="line-217"> Map<String, Float> serverLocalityMap =</span> |
| <span class="source-line-no">218</span><span id="line-218"> regionLocalityMap.get(regions.get(i).getEncodedName());</span> |
| <span class="source-line-no">219</span><span id="line-219"> if (serverLocalityMap == null) {</span> |
| <span class="source-line-no">220</span><span id="line-220"> continue;</span> |
| <span class="source-line-no">221</span><span id="line-221"> }</span> |
| <span class="source-line-no">222</span><span id="line-222"> for (int j = 0; j < servers.size(); j++) {</span> |
| <span class="source-line-no">223</span><span id="line-223"> String serverName = servers.get(j).getHostname();</span> |
| <span class="source-line-no">224</span><span id="line-224"> if (serverName == null) {</span> |
| <span class="source-line-no">225</span><span id="line-225"> continue;</span> |
| <span class="source-line-no">226</span><span id="line-226"> }</span> |
| <span class="source-line-no">227</span><span id="line-227"> Float locality = serverLocalityMap.get(serverName);</span> |
| <span class="source-line-no">228</span><span id="line-228"> if (locality == null) {</span> |
| <span class="source-line-no">229</span><span id="line-229"> continue;</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"> for (int k = 0; k < slotsPerServer; k++) {</span> |
| <span class="source-line-no">232</span><span id="line-232"> // If we can't find the locality of a region to a server, which occurs</span> |
| <span class="source-line-no">233</span><span id="line-233"> // because locality is only reported for servers which have some</span> |
| <span class="source-line-no">234</span><span id="line-234"> // blocks of a region local, then the locality for that pair is 0.</span> |
| <span class="source-line-no">235</span><span id="line-235"> localityPerServer[i][j * slotsPerServer + k] = locality.floatValue();</span> |
| <span class="source-line-no">236</span><span id="line-236"> }</span> |
| <span class="source-line-no">237</span><span id="line-237"> }</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"></span> |
| <span class="source-line-no">240</span><span id="line-240"> // Compute the total rack locality for each region in each rack. The total</span> |
| <span class="source-line-no">241</span><span id="line-241"> // rack locality is the sum of the localities of a region on all servers in</span> |
| <span class="source-line-no">242</span><span id="line-242"> // a rack.</span> |
| <span class="source-line-no">243</span><span id="line-243"> Map<String, Map<RegionInfo, Float>> rackRegionLocality = new HashMap<>();</span> |
| <span class="source-line-no">244</span><span id="line-244"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">245</span><span id="line-245"> RegionInfo region = regions.get(i);</span> |
| <span class="source-line-no">246</span><span id="line-246"> for (int j = 0; j < regionSlots; j += slotsPerServer) {</span> |
| <span class="source-line-no">247</span><span id="line-247"> String rack = rackManager.getRack(servers.get(j / slotsPerServer));</span> |
| <span class="source-line-no">248</span><span id="line-248"> Map<RegionInfo, Float> rackLocality = rackRegionLocality.get(rack);</span> |
| <span class="source-line-no">249</span><span id="line-249"> if (rackLocality == null) {</span> |
| <span class="source-line-no">250</span><span id="line-250"> rackLocality = new HashMap<>();</span> |
| <span class="source-line-no">251</span><span id="line-251"> rackRegionLocality.put(rack, rackLocality);</span> |
| <span class="source-line-no">252</span><span id="line-252"> }</span> |
| <span class="source-line-no">253</span><span id="line-253"> Float localityObj = rackLocality.get(region);</span> |
| <span class="source-line-no">254</span><span id="line-254"> float locality = localityObj == null ? 0 : localityObj.floatValue();</span> |
| <span class="source-line-no">255</span><span id="line-255"> locality += localityPerServer[i][j];</span> |
| <span class="source-line-no">256</span><span id="line-256"> rackLocality.put(region, locality);</span> |
| <span class="source-line-no">257</span><span id="line-257"> }</span> |
| <span class="source-line-no">258</span><span id="line-258"> }</span> |
| <span class="source-line-no">259</span><span id="line-259"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">260</span><span id="line-260"> for (int j = 0; j < regionSlots; j++) {</span> |
| <span class="source-line-no">261</span><span id="line-261"> String rack = rackManager.getRack(servers.get(j / slotsPerServer));</span> |
| <span class="source-line-no">262</span><span id="line-262"> Float totalRackLocalityObj = rackRegionLocality.get(rack).get(regions.get(i));</span> |
| <span class="source-line-no">263</span><span id="line-263"> float totalRackLocality =</span> |
| <span class="source-line-no">264</span><span id="line-264"> totalRackLocalityObj == null ? 0 : totalRackLocalityObj.floatValue();</span> |
| <span class="source-line-no">265</span><span id="line-265"></span> |
| <span class="source-line-no">266</span><span id="line-266"> // Primary cost aims to favor servers with high node locality and low</span> |
| <span class="source-line-no">267</span><span id="line-267"> // rack locality, so that secondaries and tertiaries can be chosen for</span> |
| <span class="source-line-no">268</span><span id="line-268"> // nodes with high rack locality. This might give primaries with</span> |
| <span class="source-line-no">269</span><span id="line-269"> // slightly less locality at first compared to a cost which only</span> |
| <span class="source-line-no">270</span><span id="line-270"> // considers the node locality, but should be better in the long run.</span> |
| <span class="source-line-no">271</span><span id="line-271"> primaryCost[i][j] = 1 - (2 * localityPerServer[i][j] - totalRackLocality);</span> |
| <span class="source-line-no">272</span><span id="line-272"></span> |
| <span class="source-line-no">273</span><span id="line-273"> // Secondary cost aims to favor servers with high node locality and high</span> |
| <span class="source-line-no">274</span><span id="line-274"> // rack locality since the tertiary will be chosen from the same rack as</span> |
| <span class="source-line-no">275</span><span id="line-275"> // the secondary. This could be negative, but that is okay.</span> |
| <span class="source-line-no">276</span><span id="line-276"> secondaryCost[i][j] = 2 - (localityPerServer[i][j] + totalRackLocality);</span> |
| <span class="source-line-no">277</span><span id="line-277"></span> |
| <span class="source-line-no">278</span><span id="line-278"> // Tertiary cost is only concerned with the node locality. It will later</span> |
| <span class="source-line-no">279</span><span id="line-279"> // be restricted to only hosts on the same rack as the secondary.</span> |
| <span class="source-line-no">280</span><span id="line-280"> tertiaryCost[i][j] = 1 - localityPerServer[i][j];</span> |
| <span class="source-line-no">281</span><span id="line-281"> }</span> |
| <span class="source-line-no">282</span><span id="line-282"> }</span> |
| <span class="source-line-no">283</span><span id="line-283"> }</span> |
| <span class="source-line-no">284</span><span id="line-284"></span> |
| <span class="source-line-no">285</span><span id="line-285"> if (this.enforceMinAssignmentMove && currentAssignmentMap != null) {</span> |
| <span class="source-line-no">286</span><span id="line-286"> // We want to minimize the number of regions which move as the result of a</span> |
| <span class="source-line-no">287</span><span id="line-287"> // new assignment. Therefore, slightly penalize any placement which is for</span> |
| <span class="source-line-no">288</span><span id="line-288"> // a host that is not currently serving the region.</span> |
| <span class="source-line-no">289</span><span id="line-289"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> for (int j = 0; j < servers.size(); j++) {</span> |
| <span class="source-line-no">291</span><span id="line-291"> ServerName currentAddress = currentAssignmentMap.get(regions.get(i));</span> |
| <span class="source-line-no">292</span><span id="line-292"> if (currentAddress != null && !currentAddress.equals(servers.get(j))) {</span> |
| <span class="source-line-no">293</span><span id="line-293"> for (int k = 0; k < slotsPerServer; k++) {</span> |
| <span class="source-line-no">294</span><span id="line-294"> primaryCost[i][j * slotsPerServer + k] += NOT_CURRENT_HOST_PENALTY;</span> |
| <span class="source-line-no">295</span><span id="line-295"> }</span> |
| <span class="source-line-no">296</span><span id="line-296"> }</span> |
| <span class="source-line-no">297</span><span id="line-297"> }</span> |
| <span class="source-line-no">298</span><span id="line-298"> }</span> |
| <span class="source-line-no">299</span><span id="line-299"> }</span> |
| <span class="source-line-no">300</span><span id="line-300"></span> |
| <span class="source-line-no">301</span><span id="line-301"> // Artificially increase cost of last slot of each server to evenly</span> |
| <span class="source-line-no">302</span><span id="line-302"> // distribute the slop, otherwise there will be a few servers with too few</span> |
| <span class="source-line-no">303</span><span id="line-303"> // regions and many servers with the max number of regions.</span> |
| <span class="source-line-no">304</span><span id="line-304"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">305</span><span id="line-305"> for (int j = 0; j < regionSlots; j += slotsPerServer) {</span> |
| <span class="source-line-no">306</span><span id="line-306"> primaryCost[i][j] += LAST_SLOT_COST_PENALTY;</span> |
| <span class="source-line-no">307</span><span id="line-307"> secondaryCost[i][j] += LAST_SLOT_COST_PENALTY;</span> |
| <span class="source-line-no">308</span><span id="line-308"> tertiaryCost[i][j] += LAST_SLOT_COST_PENALTY;</span> |
| <span class="source-line-no">309</span><span id="line-309"> }</span> |
| <span class="source-line-no">310</span><span id="line-310"> }</span> |
| <span class="source-line-no">311</span><span id="line-311"></span> |
| <span class="source-line-no">312</span><span id="line-312"> RandomizedMatrix randomizedMatrix = new RandomizedMatrix(numRegions, regionSlots);</span> |
| <span class="source-line-no">313</span><span id="line-313"> primaryCost = randomizedMatrix.transform(primaryCost);</span> |
| <span class="source-line-no">314</span><span id="line-314"> int[] primaryAssignment = new MunkresAssignment(primaryCost).solve();</span> |
| <span class="source-line-no">315</span><span id="line-315"> primaryAssignment = randomizedMatrix.invertIndices(primaryAssignment);</span> |
| <span class="source-line-no">316</span><span id="line-316"></span> |
| <span class="source-line-no">317</span><span id="line-317"> // Modify the secondary and tertiary costs for each region/server pair to</span> |
| <span class="source-line-no">318</span><span id="line-318"> // prevent a region from being assigned to the same rack for both primary</span> |
| <span class="source-line-no">319</span><span id="line-319"> // and either one of secondary or tertiary.</span> |
| <span class="source-line-no">320</span><span id="line-320"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">321</span><span id="line-321"> int slot = primaryAssignment[i];</span> |
| <span class="source-line-no">322</span><span id="line-322"> String rack = rackManager.getRack(servers.get(slot / slotsPerServer));</span> |
| <span class="source-line-no">323</span><span id="line-323"> for (int k = 0; k < servers.size(); k++) {</span> |
| <span class="source-line-no">324</span><span id="line-324"> if (!rackManager.getRack(servers.get(k)).equals(rack)) {</span> |
| <span class="source-line-no">325</span><span id="line-325"> continue;</span> |
| <span class="source-line-no">326</span><span id="line-326"> }</span> |
| <span class="source-line-no">327</span><span id="line-327"> if (k == slot / slotsPerServer) {</span> |
| <span class="source-line-no">328</span><span id="line-328"> // Same node, do not place secondary or tertiary here ever.</span> |
| <span class="source-line-no">329</span><span id="line-329"> for (int m = 0; m < slotsPerServer; m++) {</span> |
| <span class="source-line-no">330</span><span id="line-330"> secondaryCost[i][k * slotsPerServer + m] = MAX_COST;</span> |
| <span class="source-line-no">331</span><span id="line-331"> tertiaryCost[i][k * slotsPerServer + m] = MAX_COST;</span> |
| <span class="source-line-no">332</span><span id="line-332"> }</span> |
| <span class="source-line-no">333</span><span id="line-333"> } else {</span> |
| <span class="source-line-no">334</span><span id="line-334"> // Same rack, do not place secondary or tertiary here if possible.</span> |
| <span class="source-line-no">335</span><span id="line-335"> for (int m = 0; m < slotsPerServer; m++) {</span> |
| <span class="source-line-no">336</span><span id="line-336"> secondaryCost[i][k * slotsPerServer + m] = AVOID_COST;</span> |
| <span class="source-line-no">337</span><span id="line-337"> tertiaryCost[i][k * slotsPerServer + m] = AVOID_COST;</span> |
| <span class="source-line-no">338</span><span id="line-338"> }</span> |
| <span class="source-line-no">339</span><span id="line-339"> }</span> |
| <span class="source-line-no">340</span><span id="line-340"> }</span> |
| <span class="source-line-no">341</span><span id="line-341"> }</span> |
| <span class="source-line-no">342</span><span id="line-342"> if (munkresForSecondaryAndTertiary) {</span> |
| <span class="source-line-no">343</span><span id="line-343"> randomizedMatrix = new RandomizedMatrix(numRegions, regionSlots);</span> |
| <span class="source-line-no">344</span><span id="line-344"> secondaryCost = randomizedMatrix.transform(secondaryCost);</span> |
| <span class="source-line-no">345</span><span id="line-345"> int[] secondaryAssignment = new MunkresAssignment(secondaryCost).solve();</span> |
| <span class="source-line-no">346</span><span id="line-346"> secondaryAssignment = randomizedMatrix.invertIndices(secondaryAssignment);</span> |
| <span class="source-line-no">347</span><span id="line-347"></span> |
| <span class="source-line-no">348</span><span id="line-348"> // Modify the tertiary costs for each region/server pair to ensure that a</span> |
| <span class="source-line-no">349</span><span id="line-349"> // region is assigned to a tertiary server on the same rack as its secondary</span> |
| <span class="source-line-no">350</span><span id="line-350"> // server, but not the same server in that rack.</span> |
| <span class="source-line-no">351</span><span id="line-351"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">352</span><span id="line-352"> int slot = secondaryAssignment[i];</span> |
| <span class="source-line-no">353</span><span id="line-353"> String rack = rackManager.getRack(servers.get(slot / slotsPerServer));</span> |
| <span class="source-line-no">354</span><span id="line-354"> for (int k = 0; k < servers.size(); k++) {</span> |
| <span class="source-line-no">355</span><span id="line-355"> if (k == slot / slotsPerServer) {</span> |
| <span class="source-line-no">356</span><span id="line-356"> // Same node, do not place tertiary here ever.</span> |
| <span class="source-line-no">357</span><span id="line-357"> for (int m = 0; m < slotsPerServer; m++) {</span> |
| <span class="source-line-no">358</span><span id="line-358"> tertiaryCost[i][k * slotsPerServer + m] = MAX_COST;</span> |
| <span class="source-line-no">359</span><span id="line-359"> }</span> |
| <span class="source-line-no">360</span><span id="line-360"> } else {</span> |
| <span class="source-line-no">361</span><span id="line-361"> if (rackManager.getRack(servers.get(k)).equals(rack)) {</span> |
| <span class="source-line-no">362</span><span id="line-362"> continue;</span> |
| <span class="source-line-no">363</span><span id="line-363"> }</span> |
| <span class="source-line-no">364</span><span id="line-364"> // Different rack, do not place tertiary here if possible.</span> |
| <span class="source-line-no">365</span><span id="line-365"> for (int m = 0; m < slotsPerServer; m++) {</span> |
| <span class="source-line-no">366</span><span id="line-366"> tertiaryCost[i][k * slotsPerServer + m] = AVOID_COST;</span> |
| <span class="source-line-no">367</span><span id="line-367"> }</span> |
| <span class="source-line-no">368</span><span id="line-368"> }</span> |
| <span class="source-line-no">369</span><span id="line-369"> }</span> |
| <span class="source-line-no">370</span><span id="line-370"> }</span> |
| <span class="source-line-no">371</span><span id="line-371"></span> |
| <span class="source-line-no">372</span><span id="line-372"> randomizedMatrix = new RandomizedMatrix(numRegions, regionSlots);</span> |
| <span class="source-line-no">373</span><span id="line-373"> tertiaryCost = randomizedMatrix.transform(tertiaryCost);</span> |
| <span class="source-line-no">374</span><span id="line-374"> int[] tertiaryAssignment = new MunkresAssignment(tertiaryCost).solve();</span> |
| <span class="source-line-no">375</span><span id="line-375"> tertiaryAssignment = randomizedMatrix.invertIndices(tertiaryAssignment);</span> |
| <span class="source-line-no">376</span><span id="line-376"></span> |
| <span class="source-line-no">377</span><span id="line-377"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">378</span><span id="line-378"> List<ServerName> favoredServers =</span> |
| <span class="source-line-no">379</span><span id="line-379"> new ArrayList<>(FavoredNodeAssignmentHelper.FAVORED_NODES_NUM);</span> |
| <span class="source-line-no">380</span><span id="line-380"> ServerName s = servers.get(primaryAssignment[i] / slotsPerServer);</span> |
| <span class="source-line-no">381</span><span id="line-381"> favoredServers</span> |
| <span class="source-line-no">382</span><span id="line-382"> .add(ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">383</span><span id="line-383"></span> |
| <span class="source-line-no">384</span><span id="line-384"> s = servers.get(secondaryAssignment[i] / slotsPerServer);</span> |
| <span class="source-line-no">385</span><span id="line-385"> favoredServers</span> |
| <span class="source-line-no">386</span><span id="line-386"> .add(ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">387</span><span id="line-387"></span> |
| <span class="source-line-no">388</span><span id="line-388"> s = servers.get(tertiaryAssignment[i] / slotsPerServer);</span> |
| <span class="source-line-no">389</span><span id="line-389"> favoredServers</span> |
| <span class="source-line-no">390</span><span id="line-390"> .add(ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">391</span><span id="line-391"> // Update the assignment plan</span> |
| <span class="source-line-no">392</span><span id="line-392"> plan.updateFavoredNodesMap(regions.get(i), favoredServers);</span> |
| <span class="source-line-no">393</span><span id="line-393"> }</span> |
| <span class="source-line-no">394</span><span id="line-394"> LOG.info("Generated the assignment plan for " + numRegions + " regions from table "</span> |
| <span class="source-line-no">395</span><span id="line-395"> + tableName + " with " + servers.size() + " region servers");</span> |
| <span class="source-line-no">396</span><span id="line-396"> LOG.info("Assignment plan for secondary and tertiary generated " + "using MunkresAssignment");</span> |
| <span class="source-line-no">397</span><span id="line-397"> } else {</span> |
| <span class="source-line-no">398</span><span id="line-398"> Map<RegionInfo, ServerName> primaryRSMap = new HashMap<>();</span> |
| <span class="source-line-no">399</span><span id="line-399"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">400</span><span id="line-400"> primaryRSMap.put(regions.get(i), servers.get(primaryAssignment[i] / slotsPerServer));</span> |
| <span class="source-line-no">401</span><span id="line-401"> }</span> |
| <span class="source-line-no">402</span><span id="line-402"> FavoredNodeAssignmentHelper favoredNodeHelper =</span> |
| <span class="source-line-no">403</span><span id="line-403"> new FavoredNodeAssignmentHelper(servers, conf);</span> |
| <span class="source-line-no">404</span><span id="line-404"> favoredNodeHelper.initialize();</span> |
| <span class="source-line-no">405</span><span id="line-405"> Map<RegionInfo, ServerName[]> secondaryAndTertiaryMap =</span> |
| <span class="source-line-no">406</span><span id="line-406"> favoredNodeHelper.placeSecondaryAndTertiaryWithRestrictions(primaryRSMap);</span> |
| <span class="source-line-no">407</span><span id="line-407"> for (int i = 0; i < numRegions; i++) {</span> |
| <span class="source-line-no">408</span><span id="line-408"> List<ServerName> favoredServers =</span> |
| <span class="source-line-no">409</span><span id="line-409"> new ArrayList<>(FavoredNodeAssignmentHelper.FAVORED_NODES_NUM);</span> |
| <span class="source-line-no">410</span><span id="line-410"> RegionInfo currentRegion = regions.get(i);</span> |
| <span class="source-line-no">411</span><span id="line-411"> ServerName s = primaryRSMap.get(currentRegion);</span> |
| <span class="source-line-no">412</span><span id="line-412"> favoredServers</span> |
| <span class="source-line-no">413</span><span id="line-413"> .add(ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">414</span><span id="line-414"></span> |
| <span class="source-line-no">415</span><span id="line-415"> ServerName[] secondaryAndTertiary = secondaryAndTertiaryMap.get(currentRegion);</span> |
| <span class="source-line-no">416</span><span id="line-416"> s = secondaryAndTertiary[0];</span> |
| <span class="source-line-no">417</span><span id="line-417"> favoredServers</span> |
| <span class="source-line-no">418</span><span id="line-418"> .add(ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">419</span><span id="line-419"></span> |
| <span class="source-line-no">420</span><span id="line-420"> s = secondaryAndTertiary[1];</span> |
| <span class="source-line-no">421</span><span id="line-421"> favoredServers</span> |
| <span class="source-line-no">422</span><span id="line-422"> .add(ServerName.valueOf(s.getHostname(), s.getPort(), ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">423</span><span id="line-423"> // Update the assignment plan</span> |
| <span class="source-line-no">424</span><span id="line-424"> plan.updateFavoredNodesMap(regions.get(i), favoredServers);</span> |
| <span class="source-line-no">425</span><span id="line-425"> }</span> |
| <span class="source-line-no">426</span><span id="line-426"> LOG.info("Generated the assignment plan for " + numRegions + " regions from table "</span> |
| <span class="source-line-no">427</span><span id="line-427"> + tableName + " with " + servers.size() + " region servers");</span> |
| <span class="source-line-no">428</span><span id="line-428"> LOG.info("Assignment plan for secondary and tertiary generated "</span> |
| <span class="source-line-no">429</span><span id="line-429"> + "using placeSecondaryAndTertiaryWithRestrictions method");</span> |
| <span class="source-line-no">430</span><span id="line-430"> }</span> |
| <span class="source-line-no">431</span><span id="line-431"> }</span> |
| <span class="source-line-no">432</span><span id="line-432"></span> |
| <span class="source-line-no">433</span><span id="line-433"> public FavoredNodesPlan getNewAssignmentPlan() throws IOException {</span> |
| <span class="source-line-no">434</span><span id="line-434"> // Get the current region assignment snapshot by scanning from the META</span> |
| <span class="source-line-no">435</span><span id="line-435"> SnapshotOfRegionAssignmentFromMeta assignmentSnapshot = this.getRegionAssignmentSnapshot();</span> |
| <span class="source-line-no">436</span><span id="line-436"></span> |
| <span class="source-line-no">437</span><span id="line-437"> // Get the region locality map</span> |
| <span class="source-line-no">438</span><span id="line-438"> Map<String, Map<String, Float>> regionLocalityMap = null;</span> |
| <span class="source-line-no">439</span><span id="line-439"> if (this.enforceLocality) {</span> |
| <span class="source-line-no">440</span><span id="line-440"> regionLocalityMap = FSUtils.getRegionDegreeLocalityMappingFromFS(conf);</span> |
| <span class="source-line-no">441</span><span id="line-441"> }</span> |
| <span class="source-line-no">442</span><span id="line-442"> // Initialize the assignment plan</span> |
| <span class="source-line-no">443</span><span id="line-443"> FavoredNodesPlan plan = new FavoredNodesPlan();</span> |
| <span class="source-line-no">444</span><span id="line-444"></span> |
| <span class="source-line-no">445</span><span id="line-445"> // Get the table to region mapping</span> |
| <span class="source-line-no">446</span><span id="line-446"> Map<TableName, List<RegionInfo>> tableToRegionMap = assignmentSnapshot.getTableToRegionMap();</span> |
| <span class="source-line-no">447</span><span id="line-447"> LOG.info("Start to generate the new assignment plan for the "</span> |
| <span class="source-line-no">448</span><span id="line-448"> + +tableToRegionMap.keySet().size() + " tables");</span> |
| <span class="source-line-no">449</span><span id="line-449"> for (TableName table : tableToRegionMap.keySet()) {</span> |
| <span class="source-line-no">450</span><span id="line-450"> try {</span> |
| <span class="source-line-no">451</span><span id="line-451"> if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {</span> |
| <span class="source-line-no">452</span><span id="line-452"> continue;</span> |
| <span class="source-line-no">453</span><span id="line-453"> }</span> |
| <span class="source-line-no">454</span><span id="line-454"> // TODO: maybe run the placement in parallel for each table</span> |
| <span class="source-line-no">455</span><span id="line-455"> genAssignmentPlan(table, assignmentSnapshot, regionLocalityMap, plan,</span> |
| <span class="source-line-no">456</span><span id="line-456"> USE_MUNKRES_FOR_PLACING_SECONDARY_AND_TERTIARY);</span> |
| <span class="source-line-no">457</span><span id="line-457"> } catch (Exception e) {</span> |
| <span class="source-line-no">458</span><span id="line-458"> LOG.error("Get some exceptions for placing primary region server" + "for table " + table</span> |
| <span class="source-line-no">459</span><span id="line-459"> + " because " + e);</span> |
| <span class="source-line-no">460</span><span id="line-460"> }</span> |
| <span class="source-line-no">461</span><span id="line-461"> }</span> |
| <span class="source-line-no">462</span><span id="line-462"> LOG.info("Finish to generate the new assignment plan for the "</span> |
| <span class="source-line-no">463</span><span id="line-463"> + +tableToRegionMap.keySet().size() + " tables");</span> |
| <span class="source-line-no">464</span><span id="line-464"> return plan;</span> |
| <span class="source-line-no">465</span><span id="line-465"> }</span> |
| <span class="source-line-no">466</span><span id="line-466"></span> |
| <span class="source-line-no">467</span><span id="line-467"> @Override</span> |
| <span class="source-line-no">468</span><span id="line-468"> public void close() throws IOException {</span> |
| <span class="source-line-no">469</span><span id="line-469"> Closeables.close(connection, true);</span> |
| <span class="source-line-no">470</span><span id="line-470"> }</span> |
| <span class="source-line-no">471</span><span id="line-471"></span> |
| <span class="source-line-no">472</span><span id="line-472"> /**</span> |
| <span class="source-line-no">473</span><span id="line-473"> * Some algorithms for solving the assignment problem may traverse workers or jobs in linear order</span> |
| <span class="source-line-no">474</span><span id="line-474"> * which may result in skewing the assignments of the first jobs in the matrix toward the last</span> |
| <span class="source-line-no">475</span><span id="line-475"> * workers in the matrix if the costs are uniform. To avoid this kind of clumping, we can</span> |
| <span class="source-line-no">476</span><span id="line-476"> * randomize the rows and columns of the cost matrix in a reversible way, such that the solution</span> |
| <span class="source-line-no">477</span><span id="line-477"> * to the assignment problem can be interpreted in terms of the original untransformed cost</span> |
| <span class="source-line-no">478</span><span id="line-478"> * matrix. Rows and columns are transformed independently such that the elements contained in any</span> |
| <span class="source-line-no">479</span><span id="line-479"> * row of the input matrix are the same as the elements in the corresponding output matrix, and</span> |
| <span class="source-line-no">480</span><span id="line-480"> * each row has its elements transformed in the same way. Similarly for columns.</span> |
| <span class="source-line-no">481</span><span id="line-481"> */</span> |
| <span class="source-line-no">482</span><span id="line-482"> protected static class RandomizedMatrix {</span> |
| <span class="source-line-no">483</span><span id="line-483"> private final int rows;</span> |
| <span class="source-line-no">484</span><span id="line-484"> private final int cols;</span> |
| <span class="source-line-no">485</span><span id="line-485"> private final int[] rowTransform;</span> |
| <span class="source-line-no">486</span><span id="line-486"> private final int[] rowInverse;</span> |
| <span class="source-line-no">487</span><span id="line-487"> private final int[] colTransform;</span> |
| <span class="source-line-no">488</span><span id="line-488"> private final int[] colInverse;</span> |
| <span class="source-line-no">489</span><span id="line-489"></span> |
| <span class="source-line-no">490</span><span id="line-490"> /**</span> |
| <span class="source-line-no">491</span><span id="line-491"> * Create a randomization scheme for a matrix of a given size.</span> |
| <span class="source-line-no">492</span><span id="line-492"> * @param rows the number of rows in the matrix</span> |
| <span class="source-line-no">493</span><span id="line-493"> * @param cols the number of columns in the matrix</span> |
| <span class="source-line-no">494</span><span id="line-494"> */</span> |
| <span class="source-line-no">495</span><span id="line-495"> public RandomizedMatrix(int rows, int cols) {</span> |
| <span class="source-line-no">496</span><span id="line-496"> this.rows = rows;</span> |
| <span class="source-line-no">497</span><span id="line-497"> this.cols = cols;</span> |
| <span class="source-line-no">498</span><span id="line-498"> Random random = ThreadLocalRandom.current();</span> |
| <span class="source-line-no">499</span><span id="line-499"> rowTransform = new int[rows];</span> |
| <span class="source-line-no">500</span><span id="line-500"> rowInverse = new int[rows];</span> |
| <span class="source-line-no">501</span><span id="line-501"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">502</span><span id="line-502"> rowTransform[i] = i;</span> |
| <span class="source-line-no">503</span><span id="line-503"> }</span> |
| <span class="source-line-no">504</span><span id="line-504"> // Shuffle the row indices.</span> |
| <span class="source-line-no">505</span><span id="line-505"> for (int i = rows - 1; i >= 0; i--) {</span> |
| <span class="source-line-no">506</span><span id="line-506"> int r = random.nextInt(i + 1);</span> |
| <span class="source-line-no">507</span><span id="line-507"> int temp = rowTransform[r];</span> |
| <span class="source-line-no">508</span><span id="line-508"> rowTransform[r] = rowTransform[i];</span> |
| <span class="source-line-no">509</span><span id="line-509"> rowTransform[i] = temp;</span> |
| <span class="source-line-no">510</span><span id="line-510"> }</span> |
| <span class="source-line-no">511</span><span id="line-511"> // Generate the inverse row indices.</span> |
| <span class="source-line-no">512</span><span id="line-512"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">513</span><span id="line-513"> rowInverse[rowTransform[i]] = i;</span> |
| <span class="source-line-no">514</span><span id="line-514"> }</span> |
| <span class="source-line-no">515</span><span id="line-515"></span> |
| <span class="source-line-no">516</span><span id="line-516"> colTransform = new int[cols];</span> |
| <span class="source-line-no">517</span><span id="line-517"> colInverse = new int[cols];</span> |
| <span class="source-line-no">518</span><span id="line-518"> for (int i = 0; i < cols; i++) {</span> |
| <span class="source-line-no">519</span><span id="line-519"> colTransform[i] = i;</span> |
| <span class="source-line-no">520</span><span id="line-520"> }</span> |
| <span class="source-line-no">521</span><span id="line-521"> // Shuffle the column indices.</span> |
| <span class="source-line-no">522</span><span id="line-522"> for (int i = cols - 1; i >= 0; i--) {</span> |
| <span class="source-line-no">523</span><span id="line-523"> int r = random.nextInt(i + 1);</span> |
| <span class="source-line-no">524</span><span id="line-524"> int temp = colTransform[r];</span> |
| <span class="source-line-no">525</span><span id="line-525"> colTransform[r] = colTransform[i];</span> |
| <span class="source-line-no">526</span><span id="line-526"> colTransform[i] = temp;</span> |
| <span class="source-line-no">527</span><span id="line-527"> }</span> |
| <span class="source-line-no">528</span><span id="line-528"> // Generate the inverse column indices.</span> |
| <span class="source-line-no">529</span><span id="line-529"> for (int i = 0; i < cols; i++) {</span> |
| <span class="source-line-no">530</span><span id="line-530"> colInverse[colTransform[i]] = i;</span> |
| <span class="source-line-no">531</span><span id="line-531"> }</span> |
| <span class="source-line-no">532</span><span id="line-532"> }</span> |
| <span class="source-line-no">533</span><span id="line-533"></span> |
| <span class="source-line-no">534</span><span id="line-534"> /**</span> |
| <span class="source-line-no">535</span><span id="line-535"> * Copy a given matrix into a new matrix, transforming each row index and each column index</span> |
| <span class="source-line-no">536</span><span id="line-536"> * according to the randomization scheme that was created at construction time.</span> |
| <span class="source-line-no">537</span><span id="line-537"> * @param matrix the cost matrix to transform</span> |
| <span class="source-line-no">538</span><span id="line-538"> * @return a new matrix with row and column indices transformed</span> |
| <span class="source-line-no">539</span><span id="line-539"> */</span> |
| <span class="source-line-no">540</span><span id="line-540"> public float[][] transform(float[][] matrix) {</span> |
| <span class="source-line-no">541</span><span id="line-541"> float[][] result = new float[rows][cols];</span> |
| <span class="source-line-no">542</span><span id="line-542"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">543</span><span id="line-543"> for (int j = 0; j < cols; j++) {</span> |
| <span class="source-line-no">544</span><span id="line-544"> result[rowTransform[i]][colTransform[j]] = matrix[i][j];</span> |
| <span class="source-line-no">545</span><span id="line-545"> }</span> |
| <span class="source-line-no">546</span><span id="line-546"> }</span> |
| <span class="source-line-no">547</span><span id="line-547"> return result;</span> |
| <span class="source-line-no">548</span><span id="line-548"> }</span> |
| <span class="source-line-no">549</span><span id="line-549"></span> |
| <span class="source-line-no">550</span><span id="line-550"> /**</span> |
| <span class="source-line-no">551</span><span id="line-551"> * Copy a given matrix into a new matrix, transforming each row index and each column index</span> |
| <span class="source-line-no">552</span><span id="line-552"> * according to the inverse of the randomization scheme that was created at construction time.</span> |
| <span class="source-line-no">553</span><span id="line-553"> * @param matrix the cost matrix to be inverted</span> |
| <span class="source-line-no">554</span><span id="line-554"> * @return a new matrix with row and column indices inverted</span> |
| <span class="source-line-no">555</span><span id="line-555"> */</span> |
| <span class="source-line-no">556</span><span id="line-556"> public float[][] invert(float[][] matrix) {</span> |
| <span class="source-line-no">557</span><span id="line-557"> float[][] result = new float[rows][cols];</span> |
| <span class="source-line-no">558</span><span id="line-558"> for (int i = 0; i < rows; i++) {</span> |
| <span class="source-line-no">559</span><span id="line-559"> for (int j = 0; j < cols; j++) {</span> |
| <span class="source-line-no">560</span><span id="line-560"> result[rowInverse[i]][colInverse[j]] = matrix[i][j];</span> |
| <span class="source-line-no">561</span><span id="line-561"> }</span> |
| <span class="source-line-no">562</span><span id="line-562"> }</span> |
| <span class="source-line-no">563</span><span id="line-563"> return result;</span> |
| <span class="source-line-no">564</span><span id="line-564"> }</span> |
| <span class="source-line-no">565</span><span id="line-565"></span> |
| <span class="source-line-no">566</span><span id="line-566"> /**</span> |
| <span class="source-line-no">567</span><span id="line-567"> * Given an array where each element {@code indices[i]} represents the randomized column index</span> |
| <span class="source-line-no">568</span><span id="line-568"> * corresponding to randomized row index {@code i}, create a new array with the corresponding</span> |
| <span class="source-line-no">569</span><span id="line-569"> * inverted indices.</span> |
| <span class="source-line-no">570</span><span id="line-570"> * @param indices an array of transformed indices to be inverted</span> |
| <span class="source-line-no">571</span><span id="line-571"> * @return an array of inverted indices</span> |
| <span class="source-line-no">572</span><span id="line-572"> */</span> |
| <span class="source-line-no">573</span><span id="line-573"> public int[] invertIndices(int[] indices) {</span> |
| <span class="source-line-no">574</span><span id="line-574"> int[] result = new int[indices.length];</span> |
| <span class="source-line-no">575</span><span id="line-575"> for (int i = 0; i < indices.length; i++) {</span> |
| <span class="source-line-no">576</span><span id="line-576"> result[rowInverse[i]] = colInverse[indices[i]];</span> |
| <span class="source-line-no">577</span><span id="line-577"> }</span> |
| <span class="source-line-no">578</span><span id="line-578"> return result;</span> |
| <span class="source-line-no">579</span><span id="line-579"> }</span> |
| <span class="source-line-no">580</span><span id="line-580"> }</span> |
| <span class="source-line-no">581</span><span id="line-581"></span> |
| <span class="source-line-no">582</span><span id="line-582"> /**</span> |
| <span class="source-line-no">583</span><span id="line-583"> * Print the assignment plan to the system output stream</span> |
| <span class="source-line-no">584</span><span id="line-584"> */</span> |
| <span class="source-line-no">585</span><span id="line-585"> public static void printAssignmentPlan(FavoredNodesPlan plan) {</span> |
| <span class="source-line-no">586</span><span id="line-586"> if (plan == null) return;</span> |
| <span class="source-line-no">587</span><span id="line-587"> LOG.info("========== Start to print the assignment plan ================");</span> |
| <span class="source-line-no">588</span><span id="line-588"> // sort the map based on region info</span> |
| <span class="source-line-no">589</span><span id="line-589"> Map<String, List<ServerName>> assignmentMap = new TreeMap<>(plan.getAssignmentMap());</span> |
| <span class="source-line-no">590</span><span id="line-590"></span> |
| <span class="source-line-no">591</span><span id="line-591"> for (Map.Entry<String, List<ServerName>> entry : assignmentMap.entrySet()) {</span> |
| <span class="source-line-no">592</span><span id="line-592"></span> |
| <span class="source-line-no">593</span><span id="line-593"> String serverList = FavoredNodeAssignmentHelper.getFavoredNodesAsString(entry.getValue());</span> |
| <span class="source-line-no">594</span><span id="line-594"> String regionName = entry.getKey();</span> |
| <span class="source-line-no">595</span><span id="line-595"> LOG.info("Region: " + regionName);</span> |
| <span class="source-line-no">596</span><span id="line-596"> LOG.info("Its favored nodes: " + serverList);</span> |
| <span class="source-line-no">597</span><span id="line-597"> }</span> |
| <span class="source-line-no">598</span><span id="line-598"> LOG.info("========== Finish to print the assignment plan ================");</span> |
| <span class="source-line-no">599</span><span id="line-599"> }</span> |
| <span class="source-line-no">600</span><span id="line-600"></span> |
| <span class="source-line-no">601</span><span id="line-601"> /**</span> |
| <span class="source-line-no">602</span><span id="line-602"> * Update the assignment plan into hbase:meta</span> |
| <span class="source-line-no">603</span><span id="line-603"> * @param plan the assignments plan to be updated into hbase:meta</span> |
| <span class="source-line-no">604</span><span id="line-604"> * @throws IOException if cannot update assignment plan in hbase:meta</span> |
| <span class="source-line-no">605</span><span id="line-605"> */</span> |
| <span class="source-line-no">606</span><span id="line-606"> public void updateAssignmentPlanToMeta(FavoredNodesPlan plan) throws IOException {</span> |
| <span class="source-line-no">607</span><span id="line-607"> try {</span> |
| <span class="source-line-no">608</span><span id="line-608"> LOG.info("Start to update the hbase:meta with the new assignment plan");</span> |
| <span class="source-line-no">609</span><span id="line-609"> Map<String, List<ServerName>> assignmentMap = plan.getAssignmentMap();</span> |
| <span class="source-line-no">610</span><span id="line-610"> Map<RegionInfo, List<ServerName>> planToUpdate = new HashMap<>(assignmentMap.size());</span> |
| <span class="source-line-no">611</span><span id="line-611"> Map<String, RegionInfo> regionToRegionInfoMap =</span> |
| <span class="source-line-no">612</span><span id="line-612"> getRegionAssignmentSnapshot().getRegionNameToRegionInfoMap();</span> |
| <span class="source-line-no">613</span><span id="line-613"> for (Map.Entry<String, List<ServerName>> entry : assignmentMap.entrySet()) {</span> |
| <span class="source-line-no">614</span><span id="line-614"> planToUpdate.put(regionToRegionInfoMap.get(entry.getKey()), entry.getValue());</span> |
| <span class="source-line-no">615</span><span id="line-615"> }</span> |
| <span class="source-line-no">616</span><span id="line-616"></span> |
| <span class="source-line-no">617</span><span id="line-617"> FavoredNodeAssignmentHelper.updateMetaWithFavoredNodesInfo(planToUpdate, conf);</span> |
| <span class="source-line-no">618</span><span id="line-618"> LOG.info("Updated the hbase:meta with the new assignment plan");</span> |
| <span class="source-line-no">619</span><span id="line-619"> } catch (Exception e) {</span> |
| <span class="source-line-no">620</span><span id="line-620"> LOG.error(</span> |
| <span class="source-line-no">621</span><span id="line-621"> "Failed to update hbase:meta with the new assignment" + "plan because " + e.getMessage());</span> |
| <span class="source-line-no">622</span><span id="line-622"> }</span> |
| <span class="source-line-no">623</span><span id="line-623"> }</span> |
| <span class="source-line-no">624</span><span id="line-624"></span> |
| <span class="source-line-no">625</span><span id="line-625"> /**</span> |
| <span class="source-line-no">626</span><span id="line-626"> * Update the assignment plan to all the region servers</span> |
| <span class="source-line-no">627</span><span id="line-627"> */</span> |
| <span class="source-line-no">628</span><span id="line-628"> private void updateAssignmentPlanToRegionServers(FavoredNodesPlan plan) throws IOException {</span> |
| <span class="source-line-no">629</span><span id="line-629"> LOG.info("Start to update the region servers with the new assignment plan");</span> |
| <span class="source-line-no">630</span><span id="line-630"> // Get the region to region server map</span> |
| <span class="source-line-no">631</span><span id="line-631"> Map<ServerName, List<RegionInfo>> currentAssignment =</span> |
| <span class="source-line-no">632</span><span id="line-632"> this.getRegionAssignmentSnapshot().getRegionServerToRegionMap();</span> |
| <span class="source-line-no">633</span><span id="line-633"></span> |
| <span class="source-line-no">634</span><span id="line-634"> // track of the failed and succeeded updates</span> |
| <span class="source-line-no">635</span><span id="line-635"> int succeededNum = 0;</span> |
| <span class="source-line-no">636</span><span id="line-636"> Map<ServerName, Exception> failedUpdateMap = new HashMap<>();</span> |
| <span class="source-line-no">637</span><span id="line-637"></span> |
| <span class="source-line-no">638</span><span id="line-638"> for (Map.Entry<ServerName, List<RegionInfo>> entry : currentAssignment.entrySet()) {</span> |
| <span class="source-line-no">639</span><span id="line-639"> List<Pair<RegionInfo, List<ServerName>>> regionUpdateInfos = new ArrayList<>();</span> |
| <span class="source-line-no">640</span><span id="line-640"> try {</span> |
| <span class="source-line-no">641</span><span id="line-641"> // Keep track of the favored updates for the current region server</span> |
| <span class="source-line-no">642</span><span id="line-642"> FavoredNodesPlan singleServerPlan = null;</span> |
| <span class="source-line-no">643</span><span id="line-643"> // Find out all the updates for the current region server</span> |
| <span class="source-line-no">644</span><span id="line-644"> for (RegionInfo region : entry.getValue()) {</span> |
| <span class="source-line-no">645</span><span id="line-645"> List<ServerName> favoredServerList = plan.getFavoredNodes(region);</span> |
| <span class="source-line-no">646</span><span id="line-646"> if (</span> |
| <span class="source-line-no">647</span><span id="line-647"> favoredServerList != null</span> |
| <span class="source-line-no">648</span><span id="line-648"> && favoredServerList.size() == FavoredNodeAssignmentHelper.FAVORED_NODES_NUM</span> |
| <span class="source-line-no">649</span><span id="line-649"> ) {</span> |
| <span class="source-line-no">650</span><span id="line-650"> // Create the single server plan if necessary</span> |
| <span class="source-line-no">651</span><span id="line-651"> if (singleServerPlan == null) {</span> |
| <span class="source-line-no">652</span><span id="line-652"> singleServerPlan = new FavoredNodesPlan();</span> |
| <span class="source-line-no">653</span><span id="line-653"> }</span> |
| <span class="source-line-no">654</span><span id="line-654"> // Update the single server update</span> |
| <span class="source-line-no">655</span><span id="line-655"> singleServerPlan.updateFavoredNodesMap(region, favoredServerList);</span> |
| <span class="source-line-no">656</span><span id="line-656"> regionUpdateInfos.add(new Pair<>(region, favoredServerList));</span> |
| <span class="source-line-no">657</span><span id="line-657"> }</span> |
| <span class="source-line-no">658</span><span id="line-658"> }</span> |
| <span class="source-line-no">659</span><span id="line-659"> if (singleServerPlan != null) {</span> |
| <span class="source-line-no">660</span><span id="line-660"> // Update the current region server with its updated favored nodes</span> |
| <span class="source-line-no">661</span><span id="line-661"> AsyncRegionServerAdmin rsAdmin = getConnection().getRegionServerAdmin(entry.getKey());</span> |
| <span class="source-line-no">662</span><span id="line-662"> UpdateFavoredNodesRequest request =</span> |
| <span class="source-line-no">663</span><span id="line-663"> RequestConverter.buildUpdateFavoredNodesRequest(regionUpdateInfos);</span> |
| <span class="source-line-no">664</span><span id="line-664"> UpdateFavoredNodesResponse updateFavoredNodesResponse =</span> |
| <span class="source-line-no">665</span><span id="line-665"> FutureUtils.get(rsAdmin.updateFavoredNodes(request));</span> |
| <span class="source-line-no">666</span><span id="line-666"> LOG.info("Region server "</span> |
| <span class="source-line-no">667</span><span id="line-667"> + FutureUtils.get(rsAdmin.getServerInfo(RequestConverter.buildGetServerInfoRequest()))</span> |
| <span class="source-line-no">668</span><span id="line-668"> .getServerInfo()</span> |
| <span class="source-line-no">669</span><span id="line-669"> + " has updated " + updateFavoredNodesResponse.getResponse() + " / "</span> |
| <span class="source-line-no">670</span><span id="line-670"> + singleServerPlan.size() + " regions with the assignment plan");</span> |
| <span class="source-line-no">671</span><span id="line-671"> succeededNum++;</span> |
| <span class="source-line-no">672</span><span id="line-672"> }</span> |
| <span class="source-line-no">673</span><span id="line-673"> } catch (Exception e) {</span> |
| <span class="source-line-no">674</span><span id="line-674"> failedUpdateMap.put(entry.getKey(), e);</span> |
| <span class="source-line-no">675</span><span id="line-675"> }</span> |
| <span class="source-line-no">676</span><span id="line-676"> }</span> |
| <span class="source-line-no">677</span><span id="line-677"> // log the succeeded updates</span> |
| <span class="source-line-no">678</span><span id="line-678"> LOG.info("Updated " + succeededNum + " region servers with " + "the new assignment plan");</span> |
| <span class="source-line-no">679</span><span id="line-679"></span> |
| <span class="source-line-no">680</span><span id="line-680"> // log the failed updates</span> |
| <span class="source-line-no">681</span><span id="line-681"> int failedNum = failedUpdateMap.size();</span> |
| <span class="source-line-no">682</span><span id="line-682"> if (failedNum != 0) {</span> |
| <span class="source-line-no">683</span><span id="line-683"> LOG.error("Failed to update the following + " + failedNum</span> |
| <span class="source-line-no">684</span><span id="line-684"> + " region servers with its corresponding favored nodes");</span> |
| <span class="source-line-no">685</span><span id="line-685"> for (Map.Entry<ServerName, Exception> entry : failedUpdateMap.entrySet()) {</span> |
| <span class="source-line-no">686</span><span id="line-686"> LOG.error("Failed to update " + entry.getKey().getAddress() + " because of "</span> |
| <span class="source-line-no">687</span><span id="line-687"> + entry.getValue().getMessage());</span> |
| <span class="source-line-no">688</span><span id="line-688"> }</span> |
| <span class="source-line-no">689</span><span id="line-689"> }</span> |
| <span class="source-line-no">690</span><span id="line-690"> }</span> |
| <span class="source-line-no">691</span><span id="line-691"></span> |
| <span class="source-line-no">692</span><span id="line-692"> public void updateAssignmentPlan(FavoredNodesPlan plan) throws IOException {</span> |
| <span class="source-line-no">693</span><span id="line-693"> LOG.info("Start to update the new assignment plan for the hbase:meta table and"</span> |
| <span class="source-line-no">694</span><span id="line-694"> + " the region servers");</span> |
| <span class="source-line-no">695</span><span id="line-695"> // Update the new assignment plan to META</span> |
| <span class="source-line-no">696</span><span id="line-696"> updateAssignmentPlanToMeta(plan);</span> |
| <span class="source-line-no">697</span><span id="line-697"> // Update the new assignment plan to Region Servers</span> |
| <span class="source-line-no">698</span><span id="line-698"> updateAssignmentPlanToRegionServers(plan);</span> |
| <span class="source-line-no">699</span><span id="line-699"> LOG.info("Finish to update the new assignment plan for the hbase:meta table and"</span> |
| <span class="source-line-no">700</span><span id="line-700"> + " the region servers");</span> |
| <span class="source-line-no">701</span><span id="line-701"> }</span> |
| <span class="source-line-no">702</span><span id="line-702"></span> |
| <span class="source-line-no">703</span><span id="line-703"> /**</span> |
| <span class="source-line-no">704</span><span id="line-704"> * Return how many regions will move per table since their primary RS will change</span> |
| <span class="source-line-no">705</span><span id="line-705"> * @param newPlan - new AssignmentPlan</span> |
| <span class="source-line-no">706</span><span id="line-706"> * @return how many primaries will move per table</span> |
| <span class="source-line-no">707</span><span id="line-707"> */</span> |
| <span class="source-line-no">708</span><span id="line-708"> public Map<TableName, Integer> getRegionsMovement(FavoredNodesPlan newPlan) throws IOException {</span> |
| <span class="source-line-no">709</span><span id="line-709"> Map<TableName, Integer> movesPerTable = new HashMap<>();</span> |
| <span class="source-line-no">710</span><span id="line-710"> SnapshotOfRegionAssignmentFromMeta snapshot = this.getRegionAssignmentSnapshot();</span> |
| <span class="source-line-no">711</span><span id="line-711"> Map<TableName, List<RegionInfo>> tableToRegions = snapshot.getTableToRegionMap();</span> |
| <span class="source-line-no">712</span><span id="line-712"> FavoredNodesPlan oldPlan = snapshot.getExistingAssignmentPlan();</span> |
| <span class="source-line-no">713</span><span id="line-713"> Set<TableName> tables = snapshot.getTableSet();</span> |
| <span class="source-line-no">714</span><span id="line-714"> for (TableName table : tables) {</span> |
| <span class="source-line-no">715</span><span id="line-715"> int movedPrimaries = 0;</span> |
| <span class="source-line-no">716</span><span id="line-716"> if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {</span> |
| <span class="source-line-no">717</span><span id="line-717"> continue;</span> |
| <span class="source-line-no">718</span><span id="line-718"> }</span> |
| <span class="source-line-no">719</span><span id="line-719"> List<RegionInfo> regions = tableToRegions.get(table);</span> |
| <span class="source-line-no">720</span><span id="line-720"> for (RegionInfo region : regions) {</span> |
| <span class="source-line-no">721</span><span id="line-721"> List<ServerName> oldServers = oldPlan.getFavoredNodes(region);</span> |
| <span class="source-line-no">722</span><span id="line-722"> List<ServerName> newServers = newPlan.getFavoredNodes(region);</span> |
| <span class="source-line-no">723</span><span id="line-723"> if (oldServers != null && newServers != null) {</span> |
| <span class="source-line-no">724</span><span id="line-724"> ServerName oldPrimary = oldServers.get(0);</span> |
| <span class="source-line-no">725</span><span id="line-725"> ServerName newPrimary = newServers.get(0);</span> |
| <span class="source-line-no">726</span><span id="line-726"> if (oldPrimary.compareTo(newPrimary) != 0) {</span> |
| <span class="source-line-no">727</span><span id="line-727"> movedPrimaries++;</span> |
| <span class="source-line-no">728</span><span id="line-728"> }</span> |
| <span class="source-line-no">729</span><span id="line-729"> }</span> |
| <span class="source-line-no">730</span><span id="line-730"> }</span> |
| <span class="source-line-no">731</span><span id="line-731"> movesPerTable.put(table, movedPrimaries);</span> |
| <span class="source-line-no">732</span><span id="line-732"> }</span> |
| <span class="source-line-no">733</span><span id="line-733"> return movesPerTable;</span> |
| <span class="source-line-no">734</span><span id="line-734"> }</span> |
| <span class="source-line-no">735</span><span id="line-735"></span> |
| <span class="source-line-no">736</span><span id="line-736"> /**</span> |
| <span class="source-line-no">737</span><span id="line-737"> * Compares two plans and check whether the locality dropped or increased (prints the information</span> |
| <span class="source-line-no">738</span><span id="line-738"> * as a string) also prints the baseline locality</span> |
| <span class="source-line-no">739</span><span id="line-739"> * @param movesPerTable - how many primary regions will move per table</span> |
| <span class="source-line-no">740</span><span id="line-740"> * @param regionLocalityMap - locality map from FS</span> |
| <span class="source-line-no">741</span><span id="line-741"> * @param newPlan - new assignment plan</span> |
| <span class="source-line-no">742</span><span id="line-742"> */</span> |
| <span class="source-line-no">743</span><span id="line-743"> public void checkDifferencesWithOldPlan(Map<TableName, Integer> movesPerTable,</span> |
| <span class="source-line-no">744</span><span id="line-744"> Map<String, Map<String, Float>> regionLocalityMap, FavoredNodesPlan newPlan)</span> |
| <span class="source-line-no">745</span><span id="line-745"> throws IOException {</span> |
| <span class="source-line-no">746</span><span id="line-746"> // localities for primary, secondary and tertiary</span> |
| <span class="source-line-no">747</span><span id="line-747"> SnapshotOfRegionAssignmentFromMeta snapshot = this.getRegionAssignmentSnapshot();</span> |
| <span class="source-line-no">748</span><span id="line-748"> FavoredNodesPlan oldPlan = snapshot.getExistingAssignmentPlan();</span> |
| <span class="source-line-no">749</span><span id="line-749"> Set<TableName> tables = snapshot.getTableSet();</span> |
| <span class="source-line-no">750</span><span id="line-750"> Map<TableName, List<RegionInfo>> tableToRegionsMap = snapshot.getTableToRegionMap();</span> |
| <span class="source-line-no">751</span><span id="line-751"> for (TableName table : tables) {</span> |
| <span class="source-line-no">752</span><span id="line-752"> float[] deltaLocality = new float[3];</span> |
| <span class="source-line-no">753</span><span id="line-753"> float[] locality = new float[3];</span> |
| <span class="source-line-no">754</span><span id="line-754"> if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {</span> |
| <span class="source-line-no">755</span><span id="line-755"> continue;</span> |
| <span class="source-line-no">756</span><span id="line-756"> }</span> |
| <span class="source-line-no">757</span><span id="line-757"> List<RegionInfo> regions = tableToRegionsMap.get(table);</span> |
| <span class="source-line-no">758</span><span id="line-758"> System.out.println("==================================================");</span> |
| <span class="source-line-no">759</span><span id="line-759"> System.out.println("Assignment Plan Projection Report For Table: " + table);</span> |
| <span class="source-line-no">760</span><span id="line-760"> System.out.println("\t Total regions: " + regions.size());</span> |
| <span class="source-line-no">761</span><span id="line-761"> System.out.println(</span> |
| <span class="source-line-no">762</span><span id="line-762"> "\t" + movesPerTable.get(table) + " primaries will move due to their primary has changed");</span> |
| <span class="source-line-no">763</span><span id="line-763"> for (RegionInfo currentRegion : regions) {</span> |
| <span class="source-line-no">764</span><span id="line-764"> Map<String, Float> regionLocality = regionLocalityMap.get(currentRegion.getEncodedName());</span> |
| <span class="source-line-no">765</span><span id="line-765"> if (regionLocality == null) {</span> |
| <span class="source-line-no">766</span><span id="line-766"> continue;</span> |
| <span class="source-line-no">767</span><span id="line-767"> }</span> |
| <span class="source-line-no">768</span><span id="line-768"> List<ServerName> oldServers = oldPlan.getFavoredNodes(currentRegion);</span> |
| <span class="source-line-no">769</span><span id="line-769"> List<ServerName> newServers = newPlan.getFavoredNodes(currentRegion);</span> |
| <span class="source-line-no">770</span><span id="line-770"> if (newServers != null && oldServers != null) {</span> |
| <span class="source-line-no">771</span><span id="line-771"> int i = 0;</span> |
| <span class="source-line-no">772</span><span id="line-772"> for (FavoredNodesPlan.Position p : FavoredNodesPlan.Position.values()) {</span> |
| <span class="source-line-no">773</span><span id="line-773"> ServerName newServer = newServers.get(p.ordinal());</span> |
| <span class="source-line-no">774</span><span id="line-774"> ServerName oldServer = oldServers.get(p.ordinal());</span> |
| <span class="source-line-no">775</span><span id="line-775"> Float oldLocality = 0f;</span> |
| <span class="source-line-no">776</span><span id="line-776"> if (oldServers != null) {</span> |
| <span class="source-line-no">777</span><span id="line-777"> oldLocality = regionLocality.get(oldServer.getHostname());</span> |
| <span class="source-line-no">778</span><span id="line-778"> if (oldLocality == null) {</span> |
| <span class="source-line-no">779</span><span id="line-779"> oldLocality = 0f;</span> |
| <span class="source-line-no">780</span><span id="line-780"> }</span> |
| <span class="source-line-no">781</span><span id="line-781"> locality[i] += oldLocality;</span> |
| <span class="source-line-no">782</span><span id="line-782"> }</span> |
| <span class="source-line-no">783</span><span id="line-783"> Float newLocality = regionLocality.get(newServer.getHostname());</span> |
| <span class="source-line-no">784</span><span id="line-784"> if (newLocality == null) {</span> |
| <span class="source-line-no">785</span><span id="line-785"> newLocality = 0f;</span> |
| <span class="source-line-no">786</span><span id="line-786"> }</span> |
| <span class="source-line-no">787</span><span id="line-787"> deltaLocality[i] += newLocality - oldLocality;</span> |
| <span class="source-line-no">788</span><span id="line-788"> i++;</span> |
| <span class="source-line-no">789</span><span id="line-789"> }</span> |
| <span class="source-line-no">790</span><span id="line-790"> }</span> |
| <span class="source-line-no">791</span><span id="line-791"> }</span> |
| <span class="source-line-no">792</span><span id="line-792"> DecimalFormat df = new java.text.DecimalFormat("#.##");</span> |
| <span class="source-line-no">793</span><span id="line-793"> for (int i = 0; i < deltaLocality.length; i++) {</span> |
| <span class="source-line-no">794</span><span id="line-794"> System.out.print("\t\t Baseline locality for ");</span> |
| <span class="source-line-no">795</span><span id="line-795"> if (i == 0) {</span> |
| <span class="source-line-no">796</span><span id="line-796"> System.out.print("primary ");</span> |
| <span class="source-line-no">797</span><span id="line-797"> } else if (i == 1) {</span> |
| <span class="source-line-no">798</span><span id="line-798"> System.out.print("secondary ");</span> |
| <span class="source-line-no">799</span><span id="line-799"> } else if (i == 2) {</span> |
| <span class="source-line-no">800</span><span id="line-800"> System.out.print("tertiary ");</span> |
| <span class="source-line-no">801</span><span id="line-801"> }</span> |
| <span class="source-line-no">802</span><span id="line-802"> System.out.println(df.format(100 * locality[i] / regions.size()) + "%");</span> |
| <span class="source-line-no">803</span><span id="line-803"> System.out.print("\t\t Locality will change with the new plan: ");</span> |
| <span class="source-line-no">804</span><span id="line-804"> System.out.println(df.format(100 * deltaLocality[i] / regions.size()) + "%");</span> |
| <span class="source-line-no">805</span><span id="line-805"> }</span> |
| <span class="source-line-no">806</span><span id="line-806"> System.out.println("\t Baseline dispersion");</span> |
| <span class="source-line-no">807</span><span id="line-807"> printDispersionScores(table, snapshot, regions.size(), null, true);</span> |
| <span class="source-line-no">808</span><span id="line-808"> System.out.println("\t Projected dispersion");</span> |
| <span class="source-line-no">809</span><span id="line-809"> printDispersionScores(table, snapshot, regions.size(), newPlan, true);</span> |
| <span class="source-line-no">810</span><span id="line-810"> }</span> |
| <span class="source-line-no">811</span><span id="line-811"> }</span> |
| <span class="source-line-no">812</span><span id="line-812"></span> |
| <span class="source-line-no">813</span><span id="line-813"> public void printDispersionScores(TableName table, SnapshotOfRegionAssignmentFromMeta snapshot,</span> |
| <span class="source-line-no">814</span><span id="line-814"> int numRegions, FavoredNodesPlan newPlan, boolean simplePrint) {</span> |
| <span class="source-line-no">815</span><span id="line-815"> if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {</span> |
| <span class="source-line-no">816</span><span id="line-816"> return;</span> |
| <span class="source-line-no">817</span><span id="line-817"> }</span> |
| <span class="source-line-no">818</span><span id="line-818"> AssignmentVerificationReport report = new AssignmentVerificationReport();</span> |
| <span class="source-line-no">819</span><span id="line-819"> report.fillUpDispersion(table, snapshot, newPlan);</span> |
| <span class="source-line-no">820</span><span id="line-820"> List<Float> dispersion = report.getDispersionInformation();</span> |
| <span class="source-line-no">821</span><span id="line-821"> if (simplePrint) {</span> |
| <span class="source-line-no">822</span><span id="line-822"> DecimalFormat df = new java.text.DecimalFormat("#.##");</span> |
| <span class="source-line-no">823</span><span id="line-823"> System.out.println("\tAvg dispersion score: " + df.format(dispersion.get(0))</span> |
| <span class="source-line-no">824</span><span id="line-824"> + " hosts;\tMax dispersion score: " + df.format(dispersion.get(1))</span> |
| <span class="source-line-no">825</span><span id="line-825"> + " hosts;\tMin dispersion score: " + df.format(dispersion.get(2)) + " hosts;");</span> |
| <span class="source-line-no">826</span><span id="line-826"> } else {</span> |
| <span class="source-line-no">827</span><span id="line-827"> LOG.info("For Table: " + table + " ; #Total Regions: " + numRegions</span> |
| <span class="source-line-no">828</span><span id="line-828"> + " ; The average dispersion score is " + dispersion.get(0));</span> |
| <span class="source-line-no">829</span><span id="line-829"> }</span> |
| <span class="source-line-no">830</span><span id="line-830"> }</span> |
| <span class="source-line-no">831</span><span id="line-831"></span> |
| <span class="source-line-no">832</span><span id="line-832"> public void printLocalityAndDispersionForCurrentPlan(</span> |
| <span class="source-line-no">833</span><span id="line-833"> Map<String, Map<String, Float>> regionLocalityMap) throws IOException {</span> |
| <span class="source-line-no">834</span><span id="line-834"> SnapshotOfRegionAssignmentFromMeta snapshot = this.getRegionAssignmentSnapshot();</span> |
| <span class="source-line-no">835</span><span id="line-835"> FavoredNodesPlan assignmentPlan = snapshot.getExistingAssignmentPlan();</span> |
| <span class="source-line-no">836</span><span id="line-836"> Set<TableName> tables = snapshot.getTableSet();</span> |
| <span class="source-line-no">837</span><span id="line-837"> Map<TableName, List<RegionInfo>> tableToRegionsMap = snapshot.getTableToRegionMap();</span> |
| <span class="source-line-no">838</span><span id="line-838"> for (TableName table : tables) {</span> |
| <span class="source-line-no">839</span><span id="line-839"> float[] locality = new float[3];</span> |
| <span class="source-line-no">840</span><span id="line-840"> if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {</span> |
| <span class="source-line-no">841</span><span id="line-841"> continue;</span> |
| <span class="source-line-no">842</span><span id="line-842"> }</span> |
| <span class="source-line-no">843</span><span id="line-843"> List<RegionInfo> regions = tableToRegionsMap.get(table);</span> |
| <span class="source-line-no">844</span><span id="line-844"> for (RegionInfo currentRegion : regions) {</span> |
| <span class="source-line-no">845</span><span id="line-845"> Map<String, Float> regionLocality = regionLocalityMap.get(currentRegion.getEncodedName());</span> |
| <span class="source-line-no">846</span><span id="line-846"> if (regionLocality == null) {</span> |
| <span class="source-line-no">847</span><span id="line-847"> continue;</span> |
| <span class="source-line-no">848</span><span id="line-848"> }</span> |
| <span class="source-line-no">849</span><span id="line-849"> List<ServerName> servers = assignmentPlan.getFavoredNodes(currentRegion);</span> |
| <span class="source-line-no">850</span><span id="line-850"> if (servers != null) {</span> |
| <span class="source-line-no">851</span><span id="line-851"> int i = 0;</span> |
| <span class="source-line-no">852</span><span id="line-852"> for (FavoredNodesPlan.Position p : FavoredNodesPlan.Position.values()) {</span> |
| <span class="source-line-no">853</span><span id="line-853"> ServerName server = servers.get(p.ordinal());</span> |
| <span class="source-line-no">854</span><span id="line-854"> Float currentLocality = 0f;</span> |
| <span class="source-line-no">855</span><span id="line-855"> if (servers != null) {</span> |
| <span class="source-line-no">856</span><span id="line-856"> currentLocality = regionLocality.get(server.getHostname());</span> |
| <span class="source-line-no">857</span><span id="line-857"> if (currentLocality == null) {</span> |
| <span class="source-line-no">858</span><span id="line-858"> currentLocality = 0f;</span> |
| <span class="source-line-no">859</span><span id="line-859"> }</span> |
| <span class="source-line-no">860</span><span id="line-860"> locality[i] += currentLocality;</span> |
| <span class="source-line-no">861</span><span id="line-861"> }</span> |
| <span class="source-line-no">862</span><span id="line-862"> i++;</span> |
| <span class="source-line-no">863</span><span id="line-863"> }</span> |
| <span class="source-line-no">864</span><span id="line-864"> }</span> |
| <span class="source-line-no">865</span><span id="line-865"> }</span> |
| <span class="source-line-no">866</span><span id="line-866"> for (int i = 0; i < locality.length; i++) {</span> |
| <span class="source-line-no">867</span><span id="line-867"> String copy = null;</span> |
| <span class="source-line-no">868</span><span id="line-868"> if (i == 0) {</span> |
| <span class="source-line-no">869</span><span id="line-869"> copy = "primary";</span> |
| <span class="source-line-no">870</span><span id="line-870"> } else if (i == 1) {</span> |
| <span class="source-line-no">871</span><span id="line-871"> copy = "secondary";</span> |
| <span class="source-line-no">872</span><span id="line-872"> } else if (i == 2) {</span> |
| <span class="source-line-no">873</span><span id="line-873"> copy = "tertiary";</span> |
| <span class="source-line-no">874</span><span id="line-874"> }</span> |
| <span class="source-line-no">875</span><span id="line-875"> float avgLocality = 100 * locality[i] / regions.size();</span> |
| <span class="source-line-no">876</span><span id="line-876"> LOG.info("For Table: " + table + " ; #Total Regions: " + regions.size()</span> |
| <span class="source-line-no">877</span><span id="line-877"> + " ; The average locality for " + copy + " is " + avgLocality + " %");</span> |
| <span class="source-line-no">878</span><span id="line-878"> }</span> |
| <span class="source-line-no">879</span><span id="line-879"> printDispersionScores(table, snapshot, regions.size(), null, false);</span> |
| <span class="source-line-no">880</span><span id="line-880"> }</span> |
| <span class="source-line-no">881</span><span id="line-881"> }</span> |
| <span class="source-line-no">882</span><span id="line-882"></span> |
| <span class="source-line-no">883</span><span id="line-883"> /**</span> |
| <span class="source-line-no">884</span><span id="line-884"> * @param favoredNodesStr The String of favored nodes</span> |
| <span class="source-line-no">885</span><span id="line-885"> * @return the list of ServerName for the byte array of favored nodes.</span> |
| <span class="source-line-no">886</span><span id="line-886"> */</span> |
| <span class="source-line-no">887</span><span id="line-887"> public static List<ServerName> getFavoredNodeList(String favoredNodesStr) {</span> |
| <span class="source-line-no">888</span><span id="line-888"> String[] favoredNodesArray = StringUtils.split(favoredNodesStr, ",");</span> |
| <span class="source-line-no">889</span><span id="line-889"> if (favoredNodesArray == null) return null;</span> |
| <span class="source-line-no">890</span><span id="line-890"></span> |
| <span class="source-line-no">891</span><span id="line-891"> List<ServerName> serverList = new ArrayList<>();</span> |
| <span class="source-line-no">892</span><span id="line-892"> for (String hostNameAndPort : favoredNodesArray) {</span> |
| <span class="source-line-no">893</span><span id="line-893"> serverList.add(ServerName.valueOf(hostNameAndPort, ServerName.NON_STARTCODE));</span> |
| <span class="source-line-no">894</span><span id="line-894"> }</span> |
| <span class="source-line-no">895</span><span id="line-895"> return serverList;</span> |
| <span class="source-line-no">896</span><span id="line-896"> }</span> |
| <span class="source-line-no">897</span><span id="line-897"></span> |
| <span class="source-line-no">898</span><span id="line-898"> public static void main(String args[]) throws IOException {</span> |
| <span class="source-line-no">899</span><span id="line-899"> Options opt = new Options();</span> |
| <span class="source-line-no">900</span><span id="line-900"> opt.addOption("w", "write", false, "write the assignments to hbase:meta only");</span> |
| <span class="source-line-no">901</span><span id="line-901"> opt.addOption("u", "update", false,</span> |
| <span class="source-line-no">902</span><span id="line-902"> "update the assignments to hbase:meta and RegionServers together");</span> |
| <span class="source-line-no">903</span><span id="line-903"> opt.addOption("n", "dry-run", false, "do not write assignments to META");</span> |
| <span class="source-line-no">904</span><span id="line-904"> opt.addOption("v", "verify", false, "verify current assignments against META");</span> |
| <span class="source-line-no">905</span><span id="line-905"> opt.addOption("p", "print", false, "print the current assignment plan in META");</span> |
| <span class="source-line-no">906</span><span id="line-906"> opt.addOption("h", "help", false, "print usage");</span> |
| <span class="source-line-no">907</span><span id="line-907"> opt.addOption("d", "verification-details", false, "print the details of verification report");</span> |
| <span class="source-line-no">908</span><span id="line-908"></span> |
| <span class="source-line-no">909</span><span id="line-909"> opt.addOption("zk", true, "to set the zookeeper quorum");</span> |
| <span class="source-line-no">910</span><span id="line-910"> opt.addOption("fs", true, "to set HDFS");</span> |
| <span class="source-line-no">911</span><span id="line-911"> opt.addOption("hbase_root", true, "to set hbase_root directory");</span> |
| <span class="source-line-no">912</span><span id="line-912"></span> |
| <span class="source-line-no">913</span><span id="line-913"> opt.addOption("overwrite", false, "overwrite the favored nodes for a single region,"</span> |
| <span class="source-line-no">914</span><span id="line-914"> + "for example: -update -r regionName -f server1:port,server2:port,server3:port");</span> |
| <span class="source-line-no">915</span><span id="line-915"> opt.addOption("r", true, "The region name that needs to be updated");</span> |
| <span class="source-line-no">916</span><span id="line-916"> opt.addOption("f", true, "The new favored nodes");</span> |
| <span class="source-line-no">917</span><span id="line-917"></span> |
| <span class="source-line-no">918</span><span id="line-918"> opt.addOption("tables", true,</span> |
| <span class="source-line-no">919</span><span id="line-919"> "The list of table names splitted by ',' ;" + "For example: -tables: t1,t2,...,tn");</span> |
| <span class="source-line-no">920</span><span id="line-920"> opt.addOption("l", "locality", true, "enforce the maximum locality");</span> |
| <span class="source-line-no">921</span><span id="line-921"> opt.addOption("m", "min-move", true, "enforce minimum assignment move");</span> |
| <span class="source-line-no">922</span><span id="line-922"> opt.addOption("diff", false, "calculate difference between assignment plans");</span> |
| <span class="source-line-no">923</span><span id="line-923"> opt.addOption("munkres", false, "use munkres to place secondaries and tertiaries");</span> |
| <span class="source-line-no">924</span><span id="line-924"> opt.addOption("ld", "locality-dispersion", false,</span> |
| <span class="source-line-no">925</span><span id="line-925"> "print locality and dispersion " + "information for current plan");</span> |
| <span class="source-line-no">926</span><span id="line-926"> try {</span> |
| <span class="source-line-no">927</span><span id="line-927"> CommandLine cmd = new GnuParser().parse(opt, args);</span> |
| <span class="source-line-no">928</span><span id="line-928"> Configuration conf = HBaseConfiguration.create();</span> |
| <span class="source-line-no">929</span><span id="line-929"></span> |
| <span class="source-line-no">930</span><span id="line-930"> boolean enforceMinAssignmentMove = true;</span> |
| <span class="source-line-no">931</span><span id="line-931"> boolean enforceLocality = true;</span> |
| <span class="source-line-no">932</span><span id="line-932"> boolean verificationDetails = false;</span> |
| <span class="source-line-no">933</span><span id="line-933"></span> |
| <span class="source-line-no">934</span><span id="line-934"> // Read all the options</span> |
| <span class="source-line-no">935</span><span id="line-935"> if (</span> |
| <span class="source-line-no">936</span><span id="line-936"> (cmd.hasOption("l") && cmd.getOptionValue("l").equalsIgnoreCase("false"))</span> |
| <span class="source-line-no">937</span><span id="line-937"> || (cmd.hasOption("locality") && cmd.getOptionValue("locality").equalsIgnoreCase("false"))</span> |
| <span class="source-line-no">938</span><span id="line-938"> ) {</span> |
| <span class="source-line-no">939</span><span id="line-939"> enforceLocality = false;</span> |
| <span class="source-line-no">940</span><span id="line-940"> }</span> |
| <span class="source-line-no">941</span><span id="line-941"></span> |
| <span class="source-line-no">942</span><span id="line-942"> if (</span> |
| <span class="source-line-no">943</span><span id="line-943"> (cmd.hasOption("m") && cmd.getOptionValue("m").equalsIgnoreCase("false"))</span> |
| <span class="source-line-no">944</span><span id="line-944"> || (cmd.hasOption("min-move") && cmd.getOptionValue("min-move").equalsIgnoreCase("false"))</span> |
| <span class="source-line-no">945</span><span id="line-945"> ) {</span> |
| <span class="source-line-no">946</span><span id="line-946"> enforceMinAssignmentMove = false;</span> |
| <span class="source-line-no">947</span><span id="line-947"> }</span> |
| <span class="source-line-no">948</span><span id="line-948"></span> |
| <span class="source-line-no">949</span><span id="line-949"> if (cmd.hasOption("zk")) {</span> |
| <span class="source-line-no">950</span><span id="line-950"> conf.set(HConstants.ZOOKEEPER_QUORUM, cmd.getOptionValue("zk"));</span> |
| <span class="source-line-no">951</span><span id="line-951"> LOG.info("Setting the zk quorum: " + conf.get(HConstants.ZOOKEEPER_QUORUM));</span> |
| <span class="source-line-no">952</span><span id="line-952"> }</span> |
| <span class="source-line-no">953</span><span id="line-953"></span> |
| <span class="source-line-no">954</span><span id="line-954"> if (cmd.hasOption("fs")) {</span> |
| <span class="source-line-no">955</span><span id="line-955"> conf.set(FileSystem.FS_DEFAULT_NAME_KEY, cmd.getOptionValue("fs"));</span> |
| <span class="source-line-no">956</span><span id="line-956"> LOG.info("Setting the HDFS: " + conf.get(FileSystem.FS_DEFAULT_NAME_KEY));</span> |
| <span class="source-line-no">957</span><span id="line-957"> }</span> |
| <span class="source-line-no">958</span><span id="line-958"></span> |
| <span class="source-line-no">959</span><span id="line-959"> if (cmd.hasOption("hbase_root")) {</span> |
| <span class="source-line-no">960</span><span id="line-960"> conf.set(HConstants.HBASE_DIR, cmd.getOptionValue("hbase_root"));</span> |
| <span class="source-line-no">961</span><span id="line-961"> LOG.info("Setting the hbase root directory: " + conf.get(HConstants.HBASE_DIR));</span> |
| <span class="source-line-no">962</span><span id="line-962"> }</span> |
| <span class="source-line-no">963</span><span id="line-963"></span> |
| <span class="source-line-no">964</span><span id="line-964"> // Create the region placement obj</span> |
| <span class="source-line-no">965</span><span id="line-965"> try (RegionPlacementMaintainer rp =</span> |
| <span class="source-line-no">966</span><span id="line-966"> new RegionPlacementMaintainer(conf, enforceLocality, enforceMinAssignmentMove)) {</span> |
| <span class="source-line-no">967</span><span id="line-967"></span> |
| <span class="source-line-no">968</span><span id="line-968"> if (cmd.hasOption("d") || cmd.hasOption("verification-details")) {</span> |
| <span class="source-line-no">969</span><span id="line-969"> verificationDetails = true;</span> |
| <span class="source-line-no">970</span><span id="line-970"> }</span> |
| <span class="source-line-no">971</span><span id="line-971"></span> |
| <span class="source-line-no">972</span><span id="line-972"> if (cmd.hasOption("tables")) {</span> |
| <span class="source-line-no">973</span><span id="line-973"> String tableNameListStr = cmd.getOptionValue("tables");</span> |
| <span class="source-line-no">974</span><span id="line-974"> String[] tableNames = StringUtils.split(tableNameListStr, ",");</span> |
| <span class="source-line-no">975</span><span id="line-975"> rp.setTargetTableName(tableNames);</span> |
| <span class="source-line-no">976</span><span id="line-976"> }</span> |
| <span class="source-line-no">977</span><span id="line-977"></span> |
| <span class="source-line-no">978</span><span id="line-978"> if (cmd.hasOption("munkres")) {</span> |
| <span class="source-line-no">979</span><span id="line-979"> USE_MUNKRES_FOR_PLACING_SECONDARY_AND_TERTIARY = true;</span> |
| <span class="source-line-no">980</span><span id="line-980"> }</span> |
| <span class="source-line-no">981</span><span id="line-981"></span> |
| <span class="source-line-no">982</span><span id="line-982"> // Read all the modes</span> |
| <span class="source-line-no">983</span><span id="line-983"> if (cmd.hasOption("v") || cmd.hasOption("verify")) {</span> |
| <span class="source-line-no">984</span><span id="line-984"> // Verify the region placement.</span> |
| <span class="source-line-no">985</span><span id="line-985"> rp.verifyRegionPlacement(verificationDetails);</span> |
| <span class="source-line-no">986</span><span id="line-986"> } else if (cmd.hasOption("n") || cmd.hasOption("dry-run")) {</span> |
| <span class="source-line-no">987</span><span id="line-987"> // Generate the assignment plan only without updating the hbase:meta and RS</span> |
| <span class="source-line-no">988</span><span id="line-988"> FavoredNodesPlan plan = rp.getNewAssignmentPlan();</span> |
| <span class="source-line-no">989</span><span id="line-989"> printAssignmentPlan(plan);</span> |
| <span class="source-line-no">990</span><span id="line-990"> } else if (cmd.hasOption("w") || cmd.hasOption("write")) {</span> |
| <span class="source-line-no">991</span><span id="line-991"> // Generate the new assignment plan</span> |
| <span class="source-line-no">992</span><span id="line-992"> FavoredNodesPlan plan = rp.getNewAssignmentPlan();</span> |
| <span class="source-line-no">993</span><span id="line-993"> // Print the new assignment plan</span> |
| <span class="source-line-no">994</span><span id="line-994"> printAssignmentPlan(plan);</span> |
| <span class="source-line-no">995</span><span id="line-995"> // Write the new assignment plan to META</span> |
| <span class="source-line-no">996</span><span id="line-996"> rp.updateAssignmentPlanToMeta(plan);</span> |
| <span class="source-line-no">997</span><span id="line-997"> } else if (cmd.hasOption("u") || cmd.hasOption("update")) {</span> |
| <span class="source-line-no">998</span><span id="line-998"> // Generate the new assignment plan</span> |
| <span class="source-line-no">999</span><span id="line-999"> FavoredNodesPlan plan = rp.getNewAssignmentPlan();</span> |
| <span class="source-line-no">1000</span><span id="line-1000"> // Print the new assignment plan</span> |
| <span class="source-line-no">1001</span><span id="line-1001"> printAssignmentPlan(plan);</span> |
| <span class="source-line-no">1002</span><span id="line-1002"> // Update the assignment to hbase:meta and Region Servers</span> |
| <span class="source-line-no">1003</span><span id="line-1003"> rp.updateAssignmentPlan(plan);</span> |
| <span class="source-line-no">1004</span><span id="line-1004"> } else if (cmd.hasOption("diff")) {</span> |
| <span class="source-line-no">1005</span><span id="line-1005"> FavoredNodesPlan newPlan = rp.getNewAssignmentPlan();</span> |
| <span class="source-line-no">1006</span><span id="line-1006"> Map<String, Map<String, Float>> locality =</span> |
| <span class="source-line-no">1007</span><span id="line-1007"> FSUtils.getRegionDegreeLocalityMappingFromFS(conf);</span> |
| <span class="source-line-no">1008</span><span id="line-1008"> Map<TableName, Integer> movesPerTable = rp.getRegionsMovement(newPlan);</span> |
| <span class="source-line-no">1009</span><span id="line-1009"> rp.checkDifferencesWithOldPlan(movesPerTable, locality, newPlan);</span> |
| <span class="source-line-no">1010</span><span id="line-1010"> System.out.println("Do you want to update the assignment plan? [y/n]");</span> |
| <span class="source-line-no">1011</span><span id="line-1011"> Scanner s = new Scanner(System.in);</span> |
| <span class="source-line-no">1012</span><span id="line-1012"> String input = s.nextLine().trim();</span> |
| <span class="source-line-no">1013</span><span id="line-1013"> if (input.equals("y")) {</span> |
| <span class="source-line-no">1014</span><span id="line-1014"> System.out.println("Updating assignment plan...");</span> |
| <span class="source-line-no">1015</span><span id="line-1015"> rp.updateAssignmentPlan(newPlan);</span> |
| <span class="source-line-no">1016</span><span id="line-1016"> }</span> |
| <span class="source-line-no">1017</span><span id="line-1017"> s.close();</span> |
| <span class="source-line-no">1018</span><span id="line-1018"> } else if (cmd.hasOption("ld")) {</span> |
| <span class="source-line-no">1019</span><span id="line-1019"> Map<String, Map<String, Float>> locality =</span> |
| <span class="source-line-no">1020</span><span id="line-1020"> FSUtils.getRegionDegreeLocalityMappingFromFS(conf);</span> |
| <span class="source-line-no">1021</span><span id="line-1021"> rp.printLocalityAndDispersionForCurrentPlan(locality);</span> |
| <span class="source-line-no">1022</span><span id="line-1022"> } else if (cmd.hasOption("p") || cmd.hasOption("print")) {</span> |
| <span class="source-line-no">1023</span><span id="line-1023"> FavoredNodesPlan plan = rp.getRegionAssignmentSnapshot().getExistingAssignmentPlan();</span> |
| <span class="source-line-no">1024</span><span id="line-1024"> printAssignmentPlan(plan);</span> |
| <span class="source-line-no">1025</span><span id="line-1025"> } else if (cmd.hasOption("overwrite")) {</span> |
| <span class="source-line-no">1026</span><span id="line-1026"> if (!cmd.hasOption("f") || !cmd.hasOption("r")) {</span> |
| <span class="source-line-no">1027</span><span id="line-1027"> throw new IllegalArgumentException("Please specify: "</span> |
| <span class="source-line-no">1028</span><span id="line-1028"> + " -update -r regionName -f server1:port,server2:port,server3:port");</span> |
| <span class="source-line-no">1029</span><span id="line-1029"> }</span> |
| <span class="source-line-no">1030</span><span id="line-1030"></span> |
| <span class="source-line-no">1031</span><span id="line-1031"> String regionName = cmd.getOptionValue("r");</span> |
| <span class="source-line-no">1032</span><span id="line-1032"> String favoredNodesStr = cmd.getOptionValue("f");</span> |
| <span class="source-line-no">1033</span><span id="line-1033"> LOG.info("Going to update the region " + regionName + " with the new favored nodes "</span> |
| <span class="source-line-no">1034</span><span id="line-1034"> + favoredNodesStr);</span> |
| <span class="source-line-no">1035</span><span id="line-1035"> List<ServerName> favoredNodes = null;</span> |
| <span class="source-line-no">1036</span><span id="line-1036"> RegionInfo regionInfo =</span> |
| <span class="source-line-no">1037</span><span id="line-1037"> rp.getRegionAssignmentSnapshot().getRegionNameToRegionInfoMap().get(regionName);</span> |
| <span class="source-line-no">1038</span><span id="line-1038"> if (regionInfo == null) {</span> |
| <span class="source-line-no">1039</span><span id="line-1039"> LOG.error("Cannot find the region " + regionName + " from the META");</span> |
| <span class="source-line-no">1040</span><span id="line-1040"> } else {</span> |
| <span class="source-line-no">1041</span><span id="line-1041"> try {</span> |
| <span class="source-line-no">1042</span><span id="line-1042"> favoredNodes = getFavoredNodeList(favoredNodesStr);</span> |
| <span class="source-line-no">1043</span><span id="line-1043"> } catch (IllegalArgumentException e) {</span> |
| <span class="source-line-no">1044</span><span id="line-1044"> LOG.error("Cannot parse the invalid favored nodes because " + e);</span> |
| <span class="source-line-no">1045</span><span id="line-1045"> }</span> |
| <span class="source-line-no">1046</span><span id="line-1046"> FavoredNodesPlan newPlan = new FavoredNodesPlan();</span> |
| <span class="source-line-no">1047</span><span id="line-1047"> newPlan.updateFavoredNodesMap(regionInfo, favoredNodes);</span> |
| <span class="source-line-no">1048</span><span id="line-1048"> rp.updateAssignmentPlan(newPlan);</span> |
| <span class="source-line-no">1049</span><span id="line-1049"> }</span> |
| <span class="source-line-no">1050</span><span id="line-1050"> } else {</span> |
| <span class="source-line-no">1051</span><span id="line-1051"> printHelp(opt);</span> |
| <span class="source-line-no">1052</span><span id="line-1052"> }</span> |
| <span class="source-line-no">1053</span><span id="line-1053"> }</span> |
| <span class="source-line-no">1054</span><span id="line-1054"> } catch (ParseException e) {</span> |
| <span class="source-line-no">1055</span><span id="line-1055"> printHelp(opt);</span> |
| <span class="source-line-no">1056</span><span id="line-1056"> }</span> |
| <span class="source-line-no">1057</span><span id="line-1057"> }</span> |
| <span class="source-line-no">1058</span><span id="line-1058">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
