| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.master.normalizer;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import static org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils.isEmpty;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.time.Instant;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.time.Period;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.ArrayList;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.Collections;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.LinkedList;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Objects;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.function.BooleanSupplier;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.function.Function;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.RegionMetrics;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.ServerMetrics;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.ServerName;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.Size;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.TableName;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.MasterSwitchType;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.conf.ConfigurationObserver;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.assignment.RegionStates;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.slf4j.Logger;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.slf4j.LoggerFactory;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span>/**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * Simple implementation of region normalizer. Logic in use:<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * <ol><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * <li>Get all regions of a given table</li><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * <li>Get avg size S of the regions in the table (by total size of store files reported in<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * RegionMetrics)</li><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * <li>For each region R0, if R0 is bigger than S * 2, it is kindly requested to split.</li><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * <li>Otherwise, for the next region in the chain R1, if R0 + R1 is smaller then S, R0 and R1<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * are kindly requested to merge.</li><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * </ol><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)<a name="line.60"></a> |
| <span class="sourceLineNo">061</span>class SimpleRegionNormalizer implements RegionNormalizer, ConfigurationObserver {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private static final Logger LOG = LoggerFactory.getLogger(SimpleRegionNormalizer.class);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> static final String SPLIT_ENABLED_KEY = "hbase.normalizer.split.enabled";<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> static final boolean DEFAULT_SPLIT_ENABLED = true;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> static final String MERGE_ENABLED_KEY = "hbase.normalizer.merge.enabled";<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> static final boolean DEFAULT_MERGE_ENABLED = true;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> // TODO: after HBASE-24416, `min.region.count` only applies to merge plans; should<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> // deprecate/rename the configuration key.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> static final String MIN_REGION_COUNT_KEY = "hbase.normalizer.min.region.count";<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> static final int DEFAULT_MIN_REGION_COUNT = 3;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> static final String MERGE_MIN_REGION_AGE_DAYS_KEY = "hbase.normalizer.merge.min_region_age.days";<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> static final int DEFAULT_MERGE_MIN_REGION_AGE_DAYS = 3;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> static final String MERGE_MIN_REGION_SIZE_MB_KEY = "hbase.normalizer.merge.min_region_size.mb";<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> static final int DEFAULT_MERGE_MIN_REGION_SIZE_MB = 0;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private MasterServices masterServices;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private NormalizerConfiguration normalizerConfiguration;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> public SimpleRegionNormalizer() {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> masterServices = null;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> normalizerConfiguration = new NormalizerConfiguration();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> @Override<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public Configuration getConf() {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> return normalizerConfiguration.getConf();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> @Override<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public void setConf(final Configuration conf) {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> if (conf == null) {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> return;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> normalizerConfiguration = new NormalizerConfiguration(conf, normalizerConfiguration);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> @Override<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> public void onConfigurationChange(Configuration conf) {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> LOG.debug("Updating configuration parameters according to new configuration instance.");<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> setConf(conf);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> private static int parseMinRegionCount(final Configuration conf) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> final int parsedValue = conf.getInt(MIN_REGION_COUNT_KEY, DEFAULT_MIN_REGION_COUNT);<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> final int settledValue = Math.max(1, parsedValue);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> if (parsedValue != settledValue) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> warnInvalidValue(MIN_REGION_COUNT_KEY, parsedValue, settledValue);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> return settledValue;<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> private static Period parseMergeMinRegionAge(final Configuration conf) {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> final int parsedValue =<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> conf.getInt(MERGE_MIN_REGION_AGE_DAYS_KEY, DEFAULT_MERGE_MIN_REGION_AGE_DAYS);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> final int settledValue = Math.max(0, parsedValue);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> if (parsedValue != settledValue) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> warnInvalidValue(MERGE_MIN_REGION_AGE_DAYS_KEY, parsedValue, settledValue);<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> return Period.ofDays(settledValue);<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> private static long parseMergeMinRegionSizeMb(final Configuration conf) {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> final long parsedValue =<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> conf.getLong(MERGE_MIN_REGION_SIZE_MB_KEY, DEFAULT_MERGE_MIN_REGION_SIZE_MB);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> final long settledValue = Math.max(0, parsedValue);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> if (parsedValue != settledValue) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> warnInvalidValue(MERGE_MIN_REGION_SIZE_MB_KEY, parsedValue, settledValue);<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> return settledValue;<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span><a name="line.132"></a> |
| <span class="sourceLineNo">133</span> private static <T> void warnInvalidValue(final String key, final T parsedValue,<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> final T settledValue) {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> LOG.warn("Configured value {}={} is invalid. Setting value to {}.",<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> key, parsedValue, settledValue);<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span><a name="line.138"></a> |
| <span class="sourceLineNo">139</span> private static <T> void logConfigurationUpdated(final String key, final T oldValue,<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> final T newValue) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> if (!Objects.equals(oldValue, newValue)) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> LOG.info("Updated configuration for key '{}' from {} to {}", key, oldValue, newValue);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> }<a name="line.144"></a> |
| <span class="sourceLineNo">145</span><a name="line.145"></a> |
| <span class="sourceLineNo">146</span> /**<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * Return this instance's configured value for {@value #SPLIT_ENABLED_KEY}.<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> */<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public boolean isSplitEnabled() {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> return normalizerConfiguration.isSplitEnabled();<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> /**<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * Return this instance's configured value for {@value #MERGE_ENABLED_KEY}.<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> */<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> public boolean isMergeEnabled() {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> return normalizerConfiguration.isMergeEnabled();<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> }<a name="line.158"></a> |
| <span class="sourceLineNo">159</span><a name="line.159"></a> |
| <span class="sourceLineNo">160</span> /**<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * Return this instance's configured value for {@value #MIN_REGION_COUNT_KEY}.<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> */<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> public int getMinRegionCount() {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return normalizerConfiguration.getMinRegionCount();<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> /**<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * Return this instance's configured value for {@value #MERGE_MIN_REGION_AGE_DAYS_KEY}.<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> */<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> public Period getMergeMinRegionAge() {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> return normalizerConfiguration.getMergeMinRegionAge();<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> }<a name="line.172"></a> |
| <span class="sourceLineNo">173</span><a name="line.173"></a> |
| <span class="sourceLineNo">174</span> /**<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * Return this instance's configured value for {@value #MERGE_MIN_REGION_SIZE_MB_KEY}.<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> */<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> public long getMergeMinRegionSizeMb() {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> return normalizerConfiguration.getMergeMinRegionSizeMb();<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> @Override<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> public void setMasterServices(final MasterServices masterServices) {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> this.masterServices = masterServices;<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> }<a name="line.184"></a> |
| <span class="sourceLineNo">185</span><a name="line.185"></a> |
| <span class="sourceLineNo">186</span> @Override<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> public List<NormalizationPlan> computePlansForTable(final TableDescriptor tableDescriptor) {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> if (tableDescriptor == null) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> return Collections.emptyList();<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> TableName table = tableDescriptor.getTableName();<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> if (table.isSystemTable()) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> LOG.debug("Normalization of system table {} isn't allowed", table);<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> return Collections.emptyList();<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> }<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> final boolean proceedWithSplitPlanning = proceedWithSplitPlanning(tableDescriptor);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> final boolean proceedWithMergePlanning = proceedWithMergePlanning(tableDescriptor);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> if (!proceedWithMergePlanning && !proceedWithSplitPlanning) {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> LOG.debug("Both split and merge are disabled. Skipping normalization of table: {}", table);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> return Collections.emptyList();<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span><a name="line.203"></a> |
| <span class="sourceLineNo">204</span> final NormalizeContext ctx = new NormalizeContext(tableDescriptor);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> if (isEmpty(ctx.getTableRegions())) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> return Collections.emptyList();<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span><a name="line.208"></a> |
| <span class="sourceLineNo">209</span> LOG.debug("Computing normalization plan for table: {}, number of regions: {}", table,<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> ctx.getTableRegions().size());<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> final List<NormalizationPlan> plans = new ArrayList<>();<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> int splitPlansCount = 0;<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> if (proceedWithSplitPlanning) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> List<NormalizationPlan> splitPlans = computeSplitNormalizationPlans(ctx);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> splitPlansCount = splitPlans.size();<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> plans.addAll(splitPlans);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> int mergePlansCount = 0;<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> if (proceedWithMergePlanning) {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> List<NormalizationPlan> mergePlans = computeMergeNormalizationPlans(ctx);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> mergePlansCount = mergePlans.size();<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> plans.addAll(mergePlans);<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span><a name="line.225"></a> |
| <span class="sourceLineNo">226</span> LOG.debug("Computed normalization plans for table {}. Total plans: {}, split plans: {}, " +<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> "merge plans: {}", table, plans.size(), splitPlansCount, mergePlansCount);<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> return plans;<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> /**<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> * @return size of region in MB and if region is not found than -1<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> */<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> private long getRegionSizeMB(RegionInfo hri) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> ServerName sn =<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> masterServices.getAssignmentManager().getRegionStates().getRegionServerOfRegion(hri);<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> if (sn == null) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> LOG.debug("{} region was not found on any Server", hri.getRegionNameAsString());<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> return -1;<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> ServerMetrics serverMetrics = masterServices.getServerManager().getLoad(sn);<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (serverMetrics == null) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> LOG.debug("server {} was not found in ServerManager", sn.getServerName());<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> return -1;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> RegionMetrics regionLoad = serverMetrics.getRegionMetrics().get(hri.getRegionName());<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> if (regionLoad == null) {<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> LOG.debug("{} was not found in RegionsLoad", hri.getRegionNameAsString());<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> return -1;<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> }<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return (long) regionLoad.getStoreFileSize().get(Size.Unit.MEGABYTE);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> private boolean isMasterSwitchEnabled(final MasterSwitchType masterSwitchType) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> return masterServices.isSplitOrMergeEnabled(masterSwitchType);<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> private boolean proceedWithSplitPlanning(TableDescriptor tableDescriptor) {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> String value = tableDescriptor.getValue(SPLIT_ENABLED_KEY);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> return (value == null ? isSplitEnabled() : Boolean.parseBoolean(value)) &&<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> isMasterSwitchEnabled(MasterSwitchType.SPLIT);<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> }<a name="line.262"></a> |
| <span class="sourceLineNo">263</span><a name="line.263"></a> |
| <span class="sourceLineNo">264</span> private boolean proceedWithMergePlanning(TableDescriptor tableDescriptor) {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> String value = tableDescriptor.getValue(MERGE_ENABLED_KEY);<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> return (value == null ? isMergeEnabled() : Boolean.parseBoolean(value)) &&<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> isMasterSwitchEnabled(MasterSwitchType.MERGE);<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span><a name="line.269"></a> |
| <span class="sourceLineNo">270</span> /**<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> * @param tableRegions regions of table to normalize<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> * @param tableDescriptor the TableDescriptor<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> * @return average region size depending on<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * @see org.apache.hadoop.hbase.client.TableDescriptor#getNormalizerTargetRegionCount()<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> * Also make sure tableRegions contains regions of the same table<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> */<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> private double getAverageRegionSizeMb(final List<RegionInfo> tableRegions,<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> final TableDescriptor tableDescriptor) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> if (isEmpty(tableRegions)) {<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> throw new IllegalStateException(<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> "Cannot calculate average size of a table without any regions.");<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> TableName table = tableDescriptor.getTableName();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> double avgRegionSize;<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> int targetRegionCount = tableDescriptor.getNormalizerTargetRegionCount();<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> long targetRegionSize = tableDescriptor.getNormalizerTargetRegionSize();<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> LOG.debug("Table {} configured with target region count {}, target region size {} MB", table,<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> targetRegionCount, targetRegionSize);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span><a name="line.289"></a> |
| <span class="sourceLineNo">290</span> if (targetRegionSize > 0) {<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> avgRegionSize = targetRegionSize;<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> } else {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> final int regionCount = tableRegions.size();<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> final long totalSizeMb = tableRegions.stream()<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> .mapToLong(this::getRegionSizeMB)<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> .sum();<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> if (targetRegionCount > 0) {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> avgRegionSize = totalSizeMb / (double) targetRegionCount;<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> } else {<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> avgRegionSize = totalSizeMb / (double) regionCount;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> }<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> LOG.debug("Table {}, total aggregated regions size: {} MB and average region size {} MB",<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> table, totalSizeMb, String.format("%.3f", avgRegionSize));<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> }<a name="line.304"></a> |
| <span class="sourceLineNo">305</span><a name="line.305"></a> |
| <span class="sourceLineNo">306</span> return avgRegionSize;<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> }<a name="line.307"></a> |
| <span class="sourceLineNo">308</span><a name="line.308"></a> |
| <span class="sourceLineNo">309</span> /**<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> * Determine if a {@link RegionInfo} should be considered for a merge operation.<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> * </p><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> * Callers beware: for safe concurrency, be sure to pass in the local instance of<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> * {@link NormalizerConfiguration}, don't use {@code this}'s instance.<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> */<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> private boolean skipForMerge(<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> final NormalizerConfiguration normalizerConfiguration,<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> final NormalizeContext ctx,<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> final RegionInfo regionInfo<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> ) {<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> final RegionState state = ctx.getRegionStates().getRegionState(regionInfo);<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> final String name = regionInfo.getEncodedName();<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> return<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> logTraceReason(<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> () -> state == null,<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> "skipping merge of region {} because no state information is available.", name)<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> || logTraceReason(<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> () -> !Objects.equals(state.getState(), RegionState.State.OPEN),<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> "skipping merge of region {} because it is not open.", name)<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> || logTraceReason(<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> () -> !isOldEnoughForMerge(normalizerConfiguration, ctx, regionInfo),<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> "skipping merge of region {} because it is not old enough.", name)<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> || logTraceReason(<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> () -> !isLargeEnoughForMerge(normalizerConfiguration, ctx, regionInfo),<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> "skipping merge region {} because it is not large enough.", name);<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> }<a name="line.335"></a> |
| <span class="sourceLineNo">336</span><a name="line.336"></a> |
| <span class="sourceLineNo">337</span> /**<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> * Computes the merge plans that should be executed for this table to converge average region<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> * towards target average or target region count.<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> */<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> private List<NormalizationPlan> computeMergeNormalizationPlans(final NormalizeContext ctx) {<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> final NormalizerConfiguration configuration = normalizerConfiguration;<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> if (ctx.getTableRegions().size() < configuration.getMinRegionCount(ctx)) {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> LOG.debug("Table {} has {} regions, required min number of regions for normalizer to run"<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> + " is {}, not computing merge plans.", ctx.getTableName(),<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> ctx.getTableRegions().size(), configuration.getMinRegionCount());<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> return Collections.emptyList();<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span><a name="line.349"></a> |
| <span class="sourceLineNo">350</span> final long avgRegionSizeMb = (long) ctx.getAverageRegionSizeMb();<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> if (avgRegionSizeMb < configuration.getMergeMinRegionSizeMb(ctx)) {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> return Collections.emptyList();<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> }<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> LOG.debug("Computing normalization plan for table {}. average region size: {} MB, number of"<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> + " regions: {}.", ctx.getTableName(), avgRegionSizeMb,<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> ctx.getTableRegions().size());<a name="line.356"></a> |
| <span class="sourceLineNo">357</span><a name="line.357"></a> |
| <span class="sourceLineNo">358</span> // this nested loop walks the table's region chain once, looking for contiguous sequences of<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> // regions that meet the criteria for merge. The outer loop tracks the starting point of the<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> // next sequence, the inner loop looks for the end of that sequence. A single sequence becomes<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> // an instance of MergeNormalizationPlan.<a name="line.361"></a> |
| <span class="sourceLineNo">362</span><a name="line.362"></a> |
| <span class="sourceLineNo">363</span> final List<NormalizationPlan> plans = new LinkedList<>();<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> final List<NormalizationTarget> rangeMembers = new LinkedList<>();<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> long sumRangeMembersSizeMb;<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> int current = 0;<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> for (int rangeStart = 0;<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> rangeStart < ctx.getTableRegions().size() - 1 && current < ctx.getTableRegions().size();) {<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> // walk the region chain looking for contiguous sequences of regions that can be merged.<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> rangeMembers.clear();<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> sumRangeMembersSizeMb = 0;<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> for (current = rangeStart; current < ctx.getTableRegions().size(); current++) {<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> final RegionInfo regionInfo = ctx.getTableRegions().get(current);<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> final long regionSizeMb = getRegionSizeMB(regionInfo);<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> if (skipForMerge(configuration, ctx, regionInfo)) {<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> // this region cannot participate in a range. resume the outer loop.<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> rangeStart = Math.max(current, rangeStart + 1);<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> break;<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> }<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> if (rangeMembers.isEmpty() // when there are no range members, seed the range with whatever<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> // we have. this way we're prepared in case the next region is<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> // 0-size.<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> || (rangeMembers.size() == 1 && sumRangeMembersSizeMb == 0) // when there is only one<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> // region and the size is 0,<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> // seed the range with<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> // whatever we have.<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> || regionSizeMb == 0 // always add an empty region to the current range.<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> || (regionSizeMb + sumRangeMembersSizeMb <= avgRegionSizeMb)) { // add the current region<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> // to the range when<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> // there's capacity<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> // remaining.<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> rangeMembers.add(new NormalizationTarget(regionInfo, regionSizeMb));<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> sumRangeMembersSizeMb += regionSizeMb;<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> continue;<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> // we have accumulated enough regions to fill a range. resume the outer loop.<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> rangeStart = Math.max(current, rangeStart + 1);<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> break;<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> }<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> if (rangeMembers.size() > 1) {<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> plans.add(new MergeNormalizationPlan.Builder().setTargets(rangeMembers).build());<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> }<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> }<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> return plans;<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> }<a name="line.405"></a> |
| <span class="sourceLineNo">406</span><a name="line.406"></a> |
| <span class="sourceLineNo">407</span> /**<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> * Determine if a region in {@link RegionState} should be considered for a split operation.<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> */<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> private static boolean skipForSplit(final RegionState state, final RegionInfo regionInfo) {<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> final String name = regionInfo.getEncodedName();<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> return<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> logTraceReason(<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> () -> state == null,<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> "skipping split of region {} because no state information is available.", name)<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> || logTraceReason(<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> () -> !Objects.equals(state.getState(), RegionState.State.OPEN),<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> "skipping merge of region {} because it is not open.", name);<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> }<a name="line.419"></a> |
| <span class="sourceLineNo">420</span><a name="line.420"></a> |
| <span class="sourceLineNo">421</span> /**<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> * Computes the split plans that should be executed for this table to converge average region size<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> * towards target average or target region count.<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> * <br /><a name="line.424"></a> |
| <span class="sourceLineNo">425</span> * if the region is > 2 times larger than average, we split it. split<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> * is more high priority normalization action than merge.<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> */<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> private List<NormalizationPlan> computeSplitNormalizationPlans(final NormalizeContext ctx) {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> final double avgRegionSize = ctx.getAverageRegionSizeMb();<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> LOG.debug("Table {}, average region size: {} MB", ctx.getTableName(),<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> String.format("%.3f", avgRegionSize));<a name="line.431"></a> |
| <span class="sourceLineNo">432</span><a name="line.432"></a> |
| <span class="sourceLineNo">433</span> final List<NormalizationPlan> plans = new ArrayList<>();<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> for (final RegionInfo hri : ctx.getTableRegions()) {<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> if (skipForSplit(ctx.getRegionStates().getRegionState(hri), hri)) {<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> continue;<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> }<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> final long regionSizeMb = getRegionSizeMB(hri);<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> if (regionSizeMb > 2 * avgRegionSize) {<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> LOG.info("Table {}, large region {} has size {} MB, more than twice avg size {} MB, "<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> + "splitting", ctx.getTableName(), hri.getRegionNameAsString(), regionSizeMb,<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> String.format("%.3f", avgRegionSize));<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> plans.add(new SplitNormalizationPlan(hri, regionSizeMb));<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> }<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> }<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> return plans;<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> }<a name="line.447"></a> |
| <span class="sourceLineNo">448</span><a name="line.448"></a> |
| <span class="sourceLineNo">449</span> /**<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> * Return {@code true} when {@code regionInfo} has a creation date that is old<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> * enough to be considered for a merge operation, {@code false} otherwise.<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> */<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> private static boolean isOldEnoughForMerge(<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> final NormalizerConfiguration normalizerConfiguration,<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> final NormalizeContext ctx,<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> final RegionInfo regionInfo<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> ) {<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> final Instant currentTime = Instant.ofEpochMilli(EnvironmentEdgeManager.currentTime());<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> final Instant regionCreateTime = Instant.ofEpochMilli(regionInfo.getRegionId());<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> return currentTime.isAfter(<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> regionCreateTime.plus(normalizerConfiguration.getMergeMinRegionAge(ctx)));<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> }<a name="line.462"></a> |
| <span class="sourceLineNo">463</span><a name="line.463"></a> |
| <span class="sourceLineNo">464</span> /**<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> * Return {@code true} when {@code regionInfo} has a size that is sufficient<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> * to be considered for a merge operation, {@code false} otherwise.<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> * </p><a name="line.467"></a> |
| <span class="sourceLineNo">468</span> * Callers beware: for safe concurrency, be sure to pass in the local instance of<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> * {@link NormalizerConfiguration}, don't use {@code this}'s instance.<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> */<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> private boolean isLargeEnoughForMerge(<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> final NormalizerConfiguration normalizerConfiguration,<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> final NormalizeContext ctx,<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> final RegionInfo regionInfo<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> ) {<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> return getRegionSizeMB(regionInfo) >= normalizerConfiguration.getMergeMinRegionSizeMb(ctx);<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> }<a name="line.477"></a> |
| <span class="sourceLineNo">478</span><a name="line.478"></a> |
| <span class="sourceLineNo">479</span> private static boolean logTraceReason(final BooleanSupplier predicate, final String fmtWhenTrue,<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> final Object... args) {<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> final boolean value = predicate.getAsBoolean();<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> if (value) {<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> LOG.trace(fmtWhenTrue, args);<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> }<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> return value;<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> }<a name="line.486"></a> |
| <span class="sourceLineNo">487</span><a name="line.487"></a> |
| <span class="sourceLineNo">488</span> /**<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> * Holds the configuration values read from {@link Configuration}. Encapsulation in a POJO<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> * enables atomic hot-reloading of configs without locks.<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> */<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> private static final class NormalizerConfiguration {<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> private final Configuration conf;<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> private final boolean splitEnabled;<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> private final boolean mergeEnabled;<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> private final int minRegionCount;<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> private final Period mergeMinRegionAge;<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> private final long mergeMinRegionSizeMb;<a name="line.498"></a> |
| <span class="sourceLineNo">499</span><a name="line.499"></a> |
| <span class="sourceLineNo">500</span> private NormalizerConfiguration() {<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> conf = null;<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> splitEnabled = DEFAULT_SPLIT_ENABLED;<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> mergeEnabled = DEFAULT_MERGE_ENABLED;<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> minRegionCount = DEFAULT_MIN_REGION_COUNT;<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> mergeMinRegionAge = Period.ofDays(DEFAULT_MERGE_MIN_REGION_AGE_DAYS);<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> mergeMinRegionSizeMb = DEFAULT_MERGE_MIN_REGION_SIZE_MB;<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> }<a name="line.507"></a> |
| <span class="sourceLineNo">508</span><a name="line.508"></a> |
| <span class="sourceLineNo">509</span> private NormalizerConfiguration(<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> final Configuration conf,<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> final NormalizerConfiguration currentConfiguration<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> ) {<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> this.conf = conf;<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> splitEnabled = conf.getBoolean(SPLIT_ENABLED_KEY, DEFAULT_SPLIT_ENABLED);<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> mergeEnabled = conf.getBoolean(MERGE_ENABLED_KEY, DEFAULT_MERGE_ENABLED);<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> minRegionCount = parseMinRegionCount(conf);<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> mergeMinRegionAge = parseMergeMinRegionAge(conf);<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> mergeMinRegionSizeMb = parseMergeMinRegionSizeMb(conf);<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> logConfigurationUpdated(SPLIT_ENABLED_KEY, currentConfiguration.isSplitEnabled(),<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> splitEnabled);<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> logConfigurationUpdated(MERGE_ENABLED_KEY, currentConfiguration.isMergeEnabled(),<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> mergeEnabled);<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> logConfigurationUpdated(MIN_REGION_COUNT_KEY, currentConfiguration.getMinRegionCount(),<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> minRegionCount);<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> logConfigurationUpdated(MERGE_MIN_REGION_AGE_DAYS_KEY,<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> currentConfiguration.getMergeMinRegionAge(), mergeMinRegionAge);<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> logConfigurationUpdated(MERGE_MIN_REGION_SIZE_MB_KEY,<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> currentConfiguration.getMergeMinRegionSizeMb(), mergeMinRegionSizeMb);<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> }<a name="line.529"></a> |
| <span class="sourceLineNo">530</span><a name="line.530"></a> |
| <span class="sourceLineNo">531</span> public Configuration getConf() {<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> return conf;<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> }<a name="line.533"></a> |
| <span class="sourceLineNo">534</span><a name="line.534"></a> |
| <span class="sourceLineNo">535</span> public boolean isSplitEnabled() {<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> return splitEnabled;<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> }<a name="line.537"></a> |
| <span class="sourceLineNo">538</span><a name="line.538"></a> |
| <span class="sourceLineNo">539</span> public boolean isMergeEnabled() {<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> return mergeEnabled;<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> }<a name="line.541"></a> |
| <span class="sourceLineNo">542</span><a name="line.542"></a> |
| <span class="sourceLineNo">543</span> public int getMinRegionCount() {<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> return minRegionCount;<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> }<a name="line.545"></a> |
| <span class="sourceLineNo">546</span><a name="line.546"></a> |
| <span class="sourceLineNo">547</span> public int getMinRegionCount(NormalizeContext context) {<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> int minRegionCount = context.getOrDefault(MIN_REGION_COUNT_KEY, Integer::parseInt, 0);<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> if (minRegionCount <= 0) {<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> minRegionCount = getMinRegionCount();<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> }<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> return minRegionCount;<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> }<a name="line.553"></a> |
| <span class="sourceLineNo">554</span><a name="line.554"></a> |
| <span class="sourceLineNo">555</span> public Period getMergeMinRegionAge() {<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> return mergeMinRegionAge;<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> }<a name="line.557"></a> |
| <span class="sourceLineNo">558</span><a name="line.558"></a> |
| <span class="sourceLineNo">559</span> public Period getMergeMinRegionAge(NormalizeContext context) {<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> int mergeMinRegionAge = context.getOrDefault(MERGE_MIN_REGION_AGE_DAYS_KEY,<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> Integer::parseInt, -1);<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> if (mergeMinRegionAge < 0) {<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> return getMergeMinRegionAge();<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> }<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> return Period.ofDays(mergeMinRegionAge);<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> }<a name="line.566"></a> |
| <span class="sourceLineNo">567</span><a name="line.567"></a> |
| <span class="sourceLineNo">568</span> public long getMergeMinRegionSizeMb() {<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> return mergeMinRegionSizeMb;<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> }<a name="line.570"></a> |
| <span class="sourceLineNo">571</span><a name="line.571"></a> |
| <span class="sourceLineNo">572</span> public long getMergeMinRegionSizeMb(NormalizeContext context) {<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> long mergeMinRegionSizeMb = context.getOrDefault(MERGE_MIN_REGION_SIZE_MB_KEY,<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> Long::parseLong, (long)-1);<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> if (mergeMinRegionSizeMb < 0) {<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> mergeMinRegionSizeMb = getMergeMinRegionSizeMb();<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> }<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> return mergeMinRegionSizeMb;<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> }<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> }<a name="line.580"></a> |
| <span class="sourceLineNo">581</span><a name="line.581"></a> |
| <span class="sourceLineNo">582</span> /**<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> * Inner class caries the state necessary to perform a single invocation of<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> * {@link #computePlansForTable(TableDescriptor)}. Grabbing this data from the assignment manager<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> * up-front allows any computed values to be realized just once.<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> */<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> private class NormalizeContext {<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> private final TableName tableName;<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> private final RegionStates regionStates;<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> private final List<RegionInfo> tableRegions;<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> private final double averageRegionSizeMb;<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> private final TableDescriptor tableDescriptor;<a name="line.592"></a> |
| <span class="sourceLineNo">593</span><a name="line.593"></a> |
| <span class="sourceLineNo">594</span> public NormalizeContext(final TableDescriptor tableDescriptor) {<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> this.tableDescriptor = tableDescriptor;<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> tableName = tableDescriptor.getTableName();<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> regionStates = SimpleRegionNormalizer.this.masterServices<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> .getAssignmentManager()<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> .getRegionStates();<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> tableRegions = regionStates.getRegionsOfTable(tableName);<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> // The list of regionInfo from getRegionsOfTable() is ordered by regionName.<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> // regionName does not necessary guarantee the order by STARTKEY (let's say 'aa1', 'aa1!',<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> // in order by regionName, it will be 'aa1!' followed by 'aa1').<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> // This could result in normalizer merging non-adjacent regions into one and creates overlaps.<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> // In order to avoid that, sort the list by RegionInfo.COMPARATOR.<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> // See HBASE-24376<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> tableRegions.sort(RegionInfo.COMPARATOR);<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> averageRegionSizeMb = SimpleRegionNormalizer.this.getAverageRegionSizeMb(this.tableRegions,<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> this.tableDescriptor);<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> }<a name="line.610"></a> |
| <span class="sourceLineNo">611</span><a name="line.611"></a> |
| <span class="sourceLineNo">612</span> public TableName getTableName() {<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> return tableName;<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> }<a name="line.614"></a> |
| <span class="sourceLineNo">615</span><a name="line.615"></a> |
| <span class="sourceLineNo">616</span> public RegionStates getRegionStates() {<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> return regionStates;<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> }<a name="line.618"></a> |
| <span class="sourceLineNo">619</span><a name="line.619"></a> |
| <span class="sourceLineNo">620</span> public List<RegionInfo> getTableRegions() {<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> return tableRegions;<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> }<a name="line.622"></a> |
| <span class="sourceLineNo">623</span><a name="line.623"></a> |
| <span class="sourceLineNo">624</span> public double getAverageRegionSizeMb() {<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> return averageRegionSizeMb;<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> }<a name="line.626"></a> |
| <span class="sourceLineNo">627</span><a name="line.627"></a> |
| <span class="sourceLineNo">628</span> public <T> T getOrDefault(String key, Function<String, T> function, T defaultValue) {<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> String value = tableDescriptor.getValue(key);<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> if (value == null) {<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> return defaultValue;<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> } else {<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> return function.apply(value);<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> }<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> }<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> }<a name="line.636"></a> |
| <span class="sourceLineNo">637</span>}<a name="line.637"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
