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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/01/13 15:31:55 UTC
[06/47] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/554d61c6/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.html
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diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.html
index 7d91e36..335d025 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.html
@@ -83,522 +83,539 @@
<span class="sourceLineNo">075</span> private static SecureRandom rand;<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span> static String[] groups = new String[] { RSGroupInfo.DEFAULT_GROUP, "dg2", "dg3", "dg4" };<a name="line.77"></a>
-<span class="sourceLineNo">078</span> static TableName[] tables =<a name="line.78"></a>
-<span class="sourceLineNo">079</span> new TableName[] { TableName.valueOf("dt1"),<a name="line.79"></a>
-<span class="sourceLineNo">080</span> TableName.valueOf("dt2"),<a name="line.80"></a>
-<span class="sourceLineNo">081</span> TableName.valueOf("dt3"),<a name="line.81"></a>
-<span class="sourceLineNo">082</span> TableName.valueOf("dt4")};<a name="line.82"></a>
-<span class="sourceLineNo">083</span> static List<ServerName> servers;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> static Map<String, RSGroupInfo> groupMap;<a name="line.84"></a>
-<span class="sourceLineNo">085</span> static Map<TableName, String> tableMap;<a name="line.85"></a>
-<span class="sourceLineNo">086</span> static List<HTableDescriptor> tableDescs;<a name="line.86"></a>
-<span class="sourceLineNo">087</span> int[] regionAssignment = new int[] { 2, 5, 7, 10, 4, 3, 1 };<a name="line.87"></a>
-<span class="sourceLineNo">088</span> static int regionId = 0;<a name="line.88"></a>
-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span> @BeforeClass<a name="line.90"></a>
-<span class="sourceLineNo">091</span> public static void beforeAllTests() throws Exception {<a name="line.91"></a>
-<span class="sourceLineNo">092</span> rand = new SecureRandom();<a name="line.92"></a>
-<span class="sourceLineNo">093</span> servers = generateServers(7);<a name="line.93"></a>
-<span class="sourceLineNo">094</span> groupMap = constructGroupInfo(servers, groups);<a name="line.94"></a>
-<span class="sourceLineNo">095</span> tableMap = new HashMap<>();<a name="line.95"></a>
-<span class="sourceLineNo">096</span> tableDescs = constructTableDesc();<a name="line.96"></a>
-<span class="sourceLineNo">097</span> Configuration conf = HBaseConfiguration.create();<a name="line.97"></a>
-<span class="sourceLineNo">098</span> conf.set("hbase.regions.slop", "0");<a name="line.98"></a>
-<span class="sourceLineNo">099</span> conf.set("hbase.rsgroup.grouploadbalancer.class", SimpleLoadBalancer.class.getCanonicalName());<a name="line.99"></a>
-<span class="sourceLineNo">100</span> loadBalancer = new RSGroupBasedLoadBalancer();<a name="line.100"></a>
-<span class="sourceLineNo">101</span> loadBalancer.setRsGroupInfoManager(getMockedGroupInfoManager());<a name="line.101"></a>
-<span class="sourceLineNo">102</span> loadBalancer.setMasterServices(getMockedMaster());<a name="line.102"></a>
-<span class="sourceLineNo">103</span> loadBalancer.setConf(conf);<a name="line.103"></a>
-<span class="sourceLineNo">104</span> loadBalancer.initialize();<a name="line.104"></a>
-<span class="sourceLineNo">105</span> }<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span> /**<a name="line.107"></a>
-<span class="sourceLineNo">108</span> * Test the load balancing algorithm.<a name="line.108"></a>
-<span class="sourceLineNo">109</span> *<a name="line.109"></a>
-<span class="sourceLineNo">110</span> * Invariant is that all servers of the group should be hosting either floor(average) or<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * ceiling(average)<a name="line.111"></a>
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-<span class="sourceLineNo">113</span> @Test<a name="line.113"></a>
-<span class="sourceLineNo">114</span> public void testBalanceCluster() throws Exception {<a name="line.114"></a>
-<span class="sourceLineNo">115</span> Map<ServerName, List<RegionInfo>> servers = mockClusterServers();<a name="line.115"></a>
-<span class="sourceLineNo">116</span> ArrayListMultimap<String, ServerAndLoad> list = convertToGroupBasedMap(servers);<a name="line.116"></a>
-<span class="sourceLineNo">117</span> LOG.info("Mock Cluster : " + printStats(list));<a name="line.117"></a>
-<span class="sourceLineNo">118</span> List<RegionPlan> plans = loadBalancer.balanceCluster(servers);<a name="line.118"></a>
-<span class="sourceLineNo">119</span> ArrayListMultimap<String, ServerAndLoad> balancedCluster = reconcile(<a name="line.119"></a>
-<span class="sourceLineNo">120</span> list, plans);<a name="line.120"></a>
-<span class="sourceLineNo">121</span> LOG.info("Mock Balance : " + printStats(balancedCluster));<a name="line.121"></a>
-<span class="sourceLineNo">122</span> assertClusterAsBalanced(balancedCluster);<a name="line.122"></a>
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-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span> /**<a name="line.125"></a>
-<span class="sourceLineNo">126</span> * Invariant is that all servers of a group have load between floor(avg) and<a name="line.126"></a>
-<span class="sourceLineNo">127</span> * ceiling(avg) number of regions.<a name="line.127"></a>
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-<span class="sourceLineNo">129</span> private void assertClusterAsBalanced(<a name="line.129"></a>
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-<span class="sourceLineNo">131</span> for (String gName : groupLoadMap.keySet()) {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> List<ServerAndLoad> groupLoad = groupLoadMap.get(gName);<a name="line.132"></a>
-<span class="sourceLineNo">133</span> int numServers = groupLoad.size();<a name="line.133"></a>
-<span class="sourceLineNo">134</span> int numRegions = 0;<a name="line.134"></a>
-<span class="sourceLineNo">135</span> int maxRegions = 0;<a name="line.135"></a>
-<span class="sourceLineNo">136</span> int minRegions = Integer.MAX_VALUE;<a name="line.136"></a>
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-<span class="sourceLineNo">138</span> int nr = server.getLoad();<a name="line.138"></a>
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-<span class="sourceLineNo">142</span> if (nr < minRegions) {<a name="line.142"></a>
-<span class="sourceLineNo">143</span> minRegions = nr;<a name="line.143"></a>
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-<span class="sourceLineNo">145</span> numRegions += nr;<a name="line.145"></a>
-<span class="sourceLineNo">146</span> }<a name="line.146"></a>
-<span class="sourceLineNo">147</span> if (maxRegions - minRegions < 2) {<a name="line.147"></a>
-<span class="sourceLineNo">148</span> // less than 2 between max and min, can't balance<a name="line.148"></a>
-<span class="sourceLineNo">149</span> return;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> }<a name="line.150"></a>
-<span class="sourceLineNo">151</span> int min = numRegions / numServers;<a name="line.151"></a>
-<span class="sourceLineNo">152</span> int max = numRegions % numServers == 0 ? min : min + 1;<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span> for (ServerAndLoad server : groupLoad) {<a name="line.154"></a>
-<span class="sourceLineNo">155</span> assertTrue(server.getLoad() <= max);<a name="line.155"></a>
-<span class="sourceLineNo">156</span> assertTrue(server.getLoad() >= min);<a name="line.156"></a>
-<span class="sourceLineNo">157</span> }<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> /**<a name="line.161"></a>
-<span class="sourceLineNo">162</span> * All regions have an assignment.<a name="line.162"></a>
-<span class="sourceLineNo">163</span> */<a name="line.163"></a>
-<span class="sourceLineNo">164</span> private void assertImmediateAssignment(List<RegionInfo> regions,<a name="line.164"></a>
-<span class="sourceLineNo">165</span> List<ServerName> servers,<a name="line.165"></a>
-<span class="sourceLineNo">166</span> Map<RegionInfo, ServerName> assignments)<a name="line.166"></a>
-<span class="sourceLineNo">167</span> throws IOException {<a name="line.167"></a>
-<span class="sourceLineNo">168</span> for (RegionInfo region : regions) {<a name="line.168"></a>
-<span class="sourceLineNo">169</span> assertTrue(assignments.containsKey(region));<a name="line.169"></a>
-<span class="sourceLineNo">170</span> ServerName server = assignments.get(region);<a name="line.170"></a>
-<span class="sourceLineNo">171</span> TableName tableName = region.getTable();<a name="line.171"></a>
-<span class="sourceLineNo">172</span><a name="line.172"></a>
-<span class="sourceLineNo">173</span> String groupName = getMockedGroupInfoManager().getRSGroupOfTable(tableName);<a name="line.173"></a>
-<span class="sourceLineNo">174</span> assertTrue(StringUtils.isNotEmpty(groupName));<a name="line.174"></a>
-<span class="sourceLineNo">175</span> RSGroupInfo gInfo = getMockedGroupInfoManager().getRSGroup(groupName);<a name="line.175"></a>
-<span class="sourceLineNo">176</span> assertTrue("Region is not correctly assigned to group servers.",<a name="line.176"></a>
-<span class="sourceLineNo">177</span> gInfo.containsServer(server.getAddress()));<a name="line.177"></a>
-<span class="sourceLineNo">178</span> }<a name="line.178"></a>
-<span class="sourceLineNo">179</span> }<a name="line.179"></a>
-<span class="sourceLineNo">180</span><a name="line.180"></a>
-<span class="sourceLineNo">181</span> /**<a name="line.181"></a>
-<span class="sourceLineNo">182</span> * Tests the bulk assignment used during cluster startup.<a name="line.182"></a>
-<span class="sourceLineNo">183</span> *<a name="line.183"></a>
-<span class="sourceLineNo">184</span> * Round-robin. Should yield a balanced cluster so same invariant as the<a name="line.184"></a>
-<span class="sourceLineNo">185</span> * load balancer holds, all servers holding either floor(avg) or<a name="line.185"></a>
-<span class="sourceLineNo">186</span> * ceiling(avg).<a name="line.186"></a>
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-<span class="sourceLineNo">188</span> @Test<a name="line.188"></a>
-<span class="sourceLineNo">189</span> public void testBulkAssignment() throws Exception {<a name="line.189"></a>
-<span class="sourceLineNo">190</span> List<RegionInfo> regions = randomRegions(25);<a name="line.190"></a>
-<span class="sourceLineNo">191</span> Map<ServerName, List<RegionInfo>> assignments = loadBalancer<a name="line.191"></a>
-<span class="sourceLineNo">192</span> .roundRobinAssignment(regions, servers);<a name="line.192"></a>
-<span class="sourceLineNo">193</span> //test empty region/servers scenario<a name="line.193"></a>
-<span class="sourceLineNo">194</span> //this should not throw an NPE<a name="line.194"></a>
-<span class="sourceLineNo">195</span> loadBalancer.roundRobinAssignment(regions,<a name="line.195"></a>
-<span class="sourceLineNo">196</span> Collections.EMPTY_LIST);<a name="line.196"></a>
-<span class="sourceLineNo">197</span> //test regular scenario<a name="line.197"></a>
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-<span class="sourceLineNo">199</span> for (ServerName sn : assignments.keySet()) {<a name="line.199"></a>
-<span class="sourceLineNo">200</span> List<RegionInfo> regionAssigned = assignments.get(sn);<a name="line.200"></a>
-<span class="sourceLineNo">201</span> for (RegionInfo region : regionAssigned) {<a name="line.201"></a>
-<span class="sourceLineNo">202</span> TableName tableName = region.getTable();<a name="line.202"></a>
-<span class="sourceLineNo">203</span> String groupName =<a name="line.203"></a>
-<span class="sourceLineNo">204</span> getMockedGroupInfoManager().getRSGroupOfTable(tableName);<a name="line.204"></a>
-<span class="sourceLineNo">205</span> assertTrue(StringUtils.isNotEmpty(groupName));<a name="line.205"></a>
-<span class="sourceLineNo">206</span> RSGroupInfo gInfo = getMockedGroupInfoManager().getRSGroup(<a name="line.206"></a>
-<span class="sourceLineNo">207</span> groupName);<a name="line.207"></a>
-<span class="sourceLineNo">208</span> assertTrue(<a name="line.208"></a>
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-<span class="sourceLineNo">210</span> gInfo.containsServer(sn.getAddress()));<a name="line.210"></a>
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-<span class="sourceLineNo">212</span> }<a name="line.212"></a>
-<span class="sourceLineNo">213</span> ArrayListMultimap<String, ServerAndLoad> loadMap = convertToGroupBasedMap(assignments);<a name="line.213"></a>
-<span class="sourceLineNo">214</span> assertClusterAsBalanced(loadMap);<a name="line.214"></a>
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-<span class="sourceLineNo">216</span><a name="line.216"></a>
-<span class="sourceLineNo">217</span> /**<a name="line.217"></a>
-<span class="sourceLineNo">218</span> * Test the cluster startup bulk assignment which attempts to retain assignment info.<a name="line.218"></a>
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-<span class="sourceLineNo">220</span> @Test<a name="line.220"></a>
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-<span class="sourceLineNo">222</span> // Test simple case where all same servers are there<a name="line.222"></a>
-<span class="sourceLineNo">223</span> Map<ServerName, List<RegionInfo>> currentAssignments = mockClusterServers();<a name="line.223"></a>
-<span class="sourceLineNo">224</span> Map<RegionInfo, ServerName> inputForTest = new HashMap<>();<a name="line.224"></a>
-<span class="sourceLineNo">225</span> for (ServerName sn : currentAssignments.keySet()) {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> for (RegionInfo region : currentAssignments.get(sn)) {<a name="line.226"></a>
-<span class="sourceLineNo">227</span> inputForTest.put(region, sn);<a name="line.227"></a>
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-<span class="sourceLineNo">230</span> //verify region->null server assignment is handled<a name="line.230"></a>
-<span class="sourceLineNo">231</span> inputForTest.put(randomRegions(1).get(0), null);<a name="line.231"></a>
-<span class="sourceLineNo">232</span> Map<ServerName, List<RegionInfo>> newAssignment = loadBalancer<a name="line.232"></a>
-<span class="sourceLineNo">233</span> .retainAssignment(inputForTest, servers);<a name="line.233"></a>
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-<span class="sourceLineNo">236</span><a name="line.236"></a>
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-<span class="sourceLineNo">243</span> onlineServers.addAll(servers);<a name="line.243"></a>
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<TRUNCATED>