http://git-wip-us.apache.org/repos/asf/hbase-site/blob/a719cd00/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.DefaultRackManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.DefaultRackManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.DefaultRackManager.html index 49714a2..d0f1508 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.DefaultRackManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.DefaultRackManager.html @@ -172,1438 +172,1562 @@ <span class="sourceLineNo">164</span> Map<ServerName, List<HRegionInfo>> clusterState;<a name="line.164"></a> <span class="sourceLineNo">165</span><a name="line.165"></a> <span class="sourceLineNo">166</span> protected final RackManager rackManager;<a name="line.166"></a> -<span class="sourceLineNo">167</span><a name="line.167"></a> -<span class="sourceLineNo">168</span> protected Cluster(<a name="line.168"></a> -<span class="sourceLineNo">169</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.169"></a> -<span class="sourceLineNo">170</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.170"></a> -<span class="sourceLineNo">171</span> RegionLocationFinder regionFinder,<a name="line.171"></a> -<span class="sourceLineNo">172</span> RackManager rackManager) {<a name="line.172"></a> -<span class="sourceLineNo">173</span> this(null, clusterState, loads, regionFinder, rackManager);<a name="line.173"></a> -<span class="sourceLineNo">174</span> }<a name="line.174"></a> -<span class="sourceLineNo">175</span><a name="line.175"></a> -<span class="sourceLineNo">176</span> @SuppressWarnings("unchecked")<a name="line.176"></a> -<span class="sourceLineNo">177</span> protected Cluster(<a name="line.177"></a> -<span class="sourceLineNo">178</span> Collection<HRegionInfo> unassignedRegions,<a name="line.178"></a> -<span class="sourceLineNo">179</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.179"></a> -<span class="sourceLineNo">180</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.180"></a> -<span class="sourceLineNo">181</span> RegionLocationFinder regionFinder,<a name="line.181"></a> -<span class="sourceLineNo">182</span> RackManager rackManager) {<a name="line.182"></a> -<span class="sourceLineNo">183</span><a name="line.183"></a> -<span class="sourceLineNo">184</span> if (unassignedRegions == null) {<a name="line.184"></a> -<span class="sourceLineNo">185</span> unassignedRegions = EMPTY_REGION_LIST;<a name="line.185"></a> -<span class="sourceLineNo">186</span> }<a name="line.186"></a> +<span class="sourceLineNo">167</span> // Maps region -> rackIndex -> locality of region on rack<a name="line.167"></a> +<span class="sourceLineNo">168</span> private float[][] rackLocalities;<a name="line.168"></a> +<span class="sourceLineNo">169</span> // Maps localityType -> region -> [server|rack]Index with highest locality<a name="line.169"></a> +<span class="sourceLineNo">170</span> private int[][] regionsToMostLocalEntities;<a name="line.170"></a> +<span class="sourceLineNo">171</span><a name="line.171"></a> +<span class="sourceLineNo">172</span> protected Cluster(<a name="line.172"></a> +<span class="sourceLineNo">173</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.173"></a> +<span class="sourceLineNo">174</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.174"></a> +<span class="sourceLineNo">175</span> RegionLocationFinder regionFinder,<a name="line.175"></a> +<span class="sourceLineNo">176</span> RackManager rackManager) {<a name="line.176"></a> +<span class="sourceLineNo">177</span> this(null, clusterState, loads, regionFinder, rackManager);<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> @SuppressWarnings("unchecked")<a name="line.180"></a> +<span class="sourceLineNo">181</span> protected Cluster(<a name="line.181"></a> +<span class="sourceLineNo">182</span> Collection<HRegionInfo> unassignedRegions,<a name="line.182"></a> +<span class="sourceLineNo">183</span> Map<ServerName, List<HRegionInfo>> clusterState,<a name="line.183"></a> +<span class="sourceLineNo">184</span> Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.184"></a> +<span class="sourceLineNo">185</span> RegionLocationFinder regionFinder,<a name="line.185"></a> +<span class="sourceLineNo">186</span> RackManager rackManager) {<a name="line.186"></a> <span class="sourceLineNo">187</span><a name="line.187"></a> -<span class="sourceLineNo">188</span> serversToIndex = new HashMap<>();<a name="line.188"></a> -<span class="sourceLineNo">189</span> hostsToIndex = new HashMap<>();<a name="line.189"></a> -<span class="sourceLineNo">190</span> racksToIndex = new HashMap<>();<a name="line.190"></a> -<span class="sourceLineNo">191</span> tablesToIndex = new HashMap<>();<a name="line.191"></a> -<span class="sourceLineNo">192</span><a name="line.192"></a> -<span class="sourceLineNo">193</span> //TODO: We should get the list of tables from master<a name="line.193"></a> -<span class="sourceLineNo">194</span> tables = new ArrayList<>();<a name="line.194"></a> -<span class="sourceLineNo">195</span> this.rackManager = rackManager != null ? rackManager : new DefaultRackManager();<a name="line.195"></a> +<span class="sourceLineNo">188</span> if (unassignedRegions == null) {<a name="line.188"></a> +<span class="sourceLineNo">189</span> unassignedRegions = EMPTY_REGION_LIST;<a name="line.189"></a> +<span class="sourceLineNo">190</span> }<a name="line.190"></a> +<span class="sourceLineNo">191</span><a name="line.191"></a> +<span class="sourceLineNo">192</span> serversToIndex = new HashMap<>();<a name="line.192"></a> +<span class="sourceLineNo">193</span> hostsToIndex = new HashMap<>();<a name="line.193"></a> +<span class="sourceLineNo">194</span> racksToIndex = new HashMap<>();<a name="line.194"></a> +<span class="sourceLineNo">195</span> tablesToIndex = new HashMap<>();<a name="line.195"></a> <span class="sourceLineNo">196</span><a name="line.196"></a> -<span class="sourceLineNo">197</span> numRegions = 0;<a name="line.197"></a> -<span class="sourceLineNo">198</span><a name="line.198"></a> -<span class="sourceLineNo">199</span> List<List<Integer>> serversPerHostList = new ArrayList<>();<a name="line.199"></a> -<span class="sourceLineNo">200</span> List<List<Integer>> serversPerRackList = new ArrayList<>();<a name="line.200"></a> -<span class="sourceLineNo">201</span> this.clusterState = clusterState;<a name="line.201"></a> -<span class="sourceLineNo">202</span> this.regionFinder = regionFinder;<a name="line.202"></a> -<span class="sourceLineNo">203</span><a name="line.203"></a> -<span class="sourceLineNo">204</span> // Use servername and port as there can be dead servers in this list. We want everything with<a name="line.204"></a> -<span class="sourceLineNo">205</span> // a matching hostname and port to have the same index.<a name="line.205"></a> -<span class="sourceLineNo">206</span> for (ServerName sn : clusterState.keySet()) {<a name="line.206"></a> -<span class="sourceLineNo">207</span> if (sn == null) {<a name="line.207"></a> -<span class="sourceLineNo">208</span> LOG.warn("TODO: Enable TRACE on BaseLoadBalancer. Empty servername); " +<a name="line.208"></a> -<span class="sourceLineNo">209</span> "skipping; unassigned regions?");<a name="line.209"></a> -<span class="sourceLineNo">210</span> if (LOG.isTraceEnabled()) {<a name="line.210"></a> -<span class="sourceLineNo">211</span> LOG.trace("EMPTY SERVERNAME " + clusterState.toString());<a name="line.211"></a> -<span class="sourceLineNo">212</span> }<a name="line.212"></a> -<span class="sourceLineNo">213</span> continue;<a name="line.213"></a> -<span class="sourceLineNo">214</span> }<a name="line.214"></a> -<span class="sourceLineNo">215</span> if (serversToIndex.get(sn.getAddress().toString()) == null) {<a name="line.215"></a> -<span class="sourceLineNo">216</span> serversToIndex.put(sn.getHostAndPort(), numServers++);<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span> if (!hostsToIndex.containsKey(sn.getHostname())) {<a name="line.218"></a> -<span class="sourceLineNo">219</span> hostsToIndex.put(sn.getHostname(), numHosts++);<a name="line.219"></a> -<span class="sourceLineNo">220</span> serversPerHostList.add(new ArrayList<>(1));<a name="line.220"></a> +<span class="sourceLineNo">197</span> //TODO: We should get the list of tables from master<a name="line.197"></a> +<span class="sourceLineNo">198</span> tables = new ArrayList<>();<a name="line.198"></a> +<span class="sourceLineNo">199</span> this.rackManager = rackManager != null ? rackManager : new DefaultRackManager();<a name="line.199"></a> +<span class="sourceLineNo">200</span><a name="line.200"></a> +<span class="sourceLineNo">201</span> numRegions = 0;<a name="line.201"></a> +<span class="sourceLineNo">202</span><a name="line.202"></a> +<span class="sourceLineNo">203</span> List<List<Integer>> serversPerHostList = new ArrayList<>();<a name="line.203"></a> +<span class="sourceLineNo">204</span> List<List<Integer>> serversPerRackList = new ArrayList<>();<a name="line.204"></a> +<span class="sourceLineNo">205</span> this.clusterState = clusterState;<a name="line.205"></a> +<span class="sourceLineNo">206</span> this.regionFinder = regionFinder;<a name="line.206"></a> +<span class="sourceLineNo">207</span><a name="line.207"></a> +<span class="sourceLineNo">208</span> // Use servername and port as there can be dead servers in this list. We want everything with<a name="line.208"></a> +<span class="sourceLineNo">209</span> // a matching hostname and port to have the same index.<a name="line.209"></a> +<span class="sourceLineNo">210</span> for (ServerName sn : clusterState.keySet()) {<a name="line.210"></a> +<span class="sourceLineNo">211</span> if (sn == null) {<a name="line.211"></a> +<span class="sourceLineNo">212</span> LOG.warn("TODO: Enable TRACE on BaseLoadBalancer. Empty servername); " +<a name="line.212"></a> +<span class="sourceLineNo">213</span> "skipping; unassigned regions?");<a name="line.213"></a> +<span class="sourceLineNo">214</span> if (LOG.isTraceEnabled()) {<a name="line.214"></a> +<span class="sourceLineNo">215</span> LOG.trace("EMPTY SERVERNAME " + clusterState.toString());<a name="line.215"></a> +<span class="sourceLineNo">216</span> }<a name="line.216"></a> +<span class="sourceLineNo">217</span> continue;<a name="line.217"></a> +<span class="sourceLineNo">218</span> }<a name="line.218"></a> +<span class="sourceLineNo">219</span> if (serversToIndex.get(sn.getAddress().toString()) == null) {<a name="line.219"></a> +<span class="sourceLineNo">220</span> serversToIndex.put(sn.getHostAndPort(), numServers++);<a name="line.220"></a> <span class="sourceLineNo">221</span> }<a name="line.221"></a> -<span class="sourceLineNo">222</span><a name="line.222"></a> -<span class="sourceLineNo">223</span> int serverIndex = serversToIndex.get(sn.getHostAndPort());<a name="line.223"></a> -<span class="sourceLineNo">224</span> int hostIndex = hostsToIndex.get(sn.getHostname());<a name="line.224"></a> -<span class="sourceLineNo">225</span> serversPerHostList.get(hostIndex).add(serverIndex);<a name="line.225"></a> +<span class="sourceLineNo">222</span> if (!hostsToIndex.containsKey(sn.getHostname())) {<a name="line.222"></a> +<span class="sourceLineNo">223</span> hostsToIndex.put(sn.getHostname(), numHosts++);<a name="line.223"></a> +<span class="sourceLineNo">224</span> serversPerHostList.add(new ArrayList<>(1));<a name="line.224"></a> +<span class="sourceLineNo">225</span> }<a name="line.225"></a> <span class="sourceLineNo">226</span><a name="line.226"></a> -<span class="sourceLineNo">227</span> String rack = this.rackManager.getRack(sn);<a name="line.227"></a> -<span class="sourceLineNo">228</span> if (!racksToIndex.containsKey(rack)) {<a name="line.228"></a> -<span class="sourceLineNo">229</span> racksToIndex.put(rack, numRacks++);<a name="line.229"></a> -<span class="sourceLineNo">230</span> serversPerRackList.add(new ArrayList<>());<a name="line.230"></a> -<span class="sourceLineNo">231</span> }<a name="line.231"></a> -<span class="sourceLineNo">232</span> int rackIndex = racksToIndex.get(rack);<a name="line.232"></a> -<span class="sourceLineNo">233</span> serversPerRackList.get(rackIndex).add(serverIndex);<a name="line.233"></a> -<span class="sourceLineNo">234</span> }<a name="line.234"></a> -<span class="sourceLineNo">235</span><a name="line.235"></a> -<span class="sourceLineNo">236</span> // Count how many regions there are.<a name="line.236"></a> -<span class="sourceLineNo">237</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.237"></a> -<span class="sourceLineNo">238</span> numRegions += entry.getValue().size();<a name="line.238"></a> -<span class="sourceLineNo">239</span> }<a name="line.239"></a> -<span class="sourceLineNo">240</span> numRegions += unassignedRegions.size();<a name="line.240"></a> -<span class="sourceLineNo">241</span><a name="line.241"></a> -<span class="sourceLineNo">242</span> regionsToIndex = new HashMap<>(numRegions);<a name="line.242"></a> -<span class="sourceLineNo">243</span> servers = new ServerName[numServers];<a name="line.243"></a> -<span class="sourceLineNo">244</span> serversPerHost = new int[numHosts][];<a name="line.244"></a> -<span class="sourceLineNo">245</span> serversPerRack = new int[numRacks][];<a name="line.245"></a> -<span class="sourceLineNo">246</span> regions = new HRegionInfo[numRegions];<a name="line.246"></a> -<span class="sourceLineNo">247</span> regionIndexToServerIndex = new int[numRegions];<a name="line.247"></a> -<span class="sourceLineNo">248</span> initialRegionIndexToServerIndex = new int[numRegions];<a name="line.248"></a> -<span class="sourceLineNo">249</span> regionIndexToTableIndex = new int[numRegions];<a name="line.249"></a> -<span class="sourceLineNo">250</span> regionIndexToPrimaryIndex = new int[numRegions];<a name="line.250"></a> -<span class="sourceLineNo">251</span> regionLoads = new Deque[numRegions];<a name="line.251"></a> -<span class="sourceLineNo">252</span><a name="line.252"></a> -<span class="sourceLineNo">253</span> regionLocations = new int[numRegions][];<a name="line.253"></a> -<span class="sourceLineNo">254</span> serverIndicesSortedByRegionCount = new Integer[numServers];<a name="line.254"></a> -<span class="sourceLineNo">255</span> serverIndicesSortedByLocality = new Integer[numServers];<a name="line.255"></a> -<span class="sourceLineNo">256</span> localityPerServer = new float[numServers];<a name="line.256"></a> -<span class="sourceLineNo">257</span><a name="line.257"></a> -<span class="sourceLineNo">258</span> serverIndexToHostIndex = new int[numServers];<a name="line.258"></a> -<span class="sourceLineNo">259</span> serverIndexToRackIndex = new int[numServers];<a name="line.259"></a> -<span class="sourceLineNo">260</span> regionsPerServer = new int[numServers][];<a name="line.260"></a> -<span class="sourceLineNo">261</span> regionsPerHost = new int[numHosts][];<a name="line.261"></a> -<span class="sourceLineNo">262</span> regionsPerRack = new int[numRacks][];<a name="line.262"></a> -<span class="sourceLineNo">263</span> primariesOfRegionsPerServer = new int[numServers][];<a name="line.263"></a> -<span class="sourceLineNo">264</span> primariesOfRegionsPerHost = new int[numHosts][];<a name="line.264"></a> -<span class="sourceLineNo">265</span> primariesOfRegionsPerRack = new int[numRacks][];<a name="line.265"></a> -<span class="sourceLineNo">266</span><a name="line.266"></a> -<span class="sourceLineNo">267</span> int tableIndex = 0, regionIndex = 0, regionPerServerIndex = 0;<a name="line.267"></a> -<span class="sourceLineNo">268</span><a name="line.268"></a> -<span class="sourceLineNo">269</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.269"></a> -<span class="sourceLineNo">270</span> if (entry.getKey() == null) {<a name="line.270"></a> -<span class="sourceLineNo">271</span> LOG.warn("SERVERNAME IS NULL, skipping " + entry.getValue());<a name="line.271"></a> -<span class="sourceLineNo">272</span> continue;<a name="line.272"></a> -<span class="sourceLineNo">273</span> }<a name="line.273"></a> -<span class="sourceLineNo">274</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.274"></a> -<span class="sourceLineNo">275</span><a name="line.275"></a> -<span class="sourceLineNo">276</span> // keep the servername if this is the first server name for this hostname<a name="line.276"></a> -<span class="sourceLineNo">277</span> // or this servername has the newest startcode.<a name="line.277"></a> -<span class="sourceLineNo">278</span> if (servers[serverIndex] == null ||<a name="line.278"></a> -<span class="sourceLineNo">279</span> servers[serverIndex].getStartcode() < entry.getKey().getStartcode()) {<a name="line.279"></a> -<span class="sourceLineNo">280</span> servers[serverIndex] = entry.getKey();<a name="line.280"></a> -<span class="sourceLineNo">281</span> }<a name="line.281"></a> -<span class="sourceLineNo">282</span><a name="line.282"></a> -<span class="sourceLineNo">283</span> if (regionsPerServer[serverIndex] != null) {<a name="line.283"></a> -<span class="sourceLineNo">284</span> // there is another server with the same hostAndPort in ClusterState.<a name="line.284"></a> -<span class="sourceLineNo">285</span> // allocate the array for the total size<a name="line.285"></a> -<span class="sourceLineNo">286</span> regionsPerServer[serverIndex] = new int[entry.getValue().size() + regionsPerServer[serverIndex].length];<a name="line.286"></a> -<span class="sourceLineNo">287</span> } else {<a name="line.287"></a> -<span class="sourceLineNo">288</span> regionsPerServer[serverIndex] = new int[entry.getValue().size()];<a name="line.288"></a> -<span class="sourceLineNo">289</span> }<a name="line.289"></a> -<span class="sourceLineNo">290</span> primariesOfRegionsPerServer[serverIndex] = new int[regionsPerServer[serverIndex].length];<a name="line.290"></a> -<span class="sourceLineNo">291</span> serverIndicesSortedByRegionCount[serverIndex] = serverIndex;<a name="line.291"></a> -<span class="sourceLineNo">292</span> serverIndicesSortedByLocality[serverIndex] = serverIndex;<a name="line.292"></a> -<span class="sourceLineNo">293</span> }<a name="line.293"></a> -<span class="sourceLineNo">294</span><a name="line.294"></a> -<span class="sourceLineNo">295</span> hosts = new String[numHosts];<a name="line.295"></a> -<span class="sourceLineNo">296</span> for (Entry<String, Integer> entry : hostsToIndex.entrySet()) {<a name="line.296"></a> -<span class="sourceLineNo">297</span> hosts[entry.getValue()] = entry.getKey();<a name="line.297"></a> -<span class="sourceLineNo">298</span> }<a name="line.298"></a> -<span class="sourceLineNo">299</span> racks = new String[numRacks];<a name="line.299"></a> -<span class="sourceLineNo">300</span> for (Entry<String, Integer> entry : racksToIndex.entrySet()) {<a name="line.300"></a> -<span class="sourceLineNo">301</span> racks[entry.getValue()] = entry.getKey();<a name="line.301"></a> +<span class="sourceLineNo">227</span> int serverIndex = serversToIndex.get(sn.getHostAndPort());<a name="line.227"></a> +<span class="sourceLineNo">228</span> int hostIndex = hostsToIndex.get(sn.getHostname());<a name="line.228"></a> +<span class="sourceLineNo">229</span> serversPerHostList.get(hostIndex).add(serverIndex);<a name="line.229"></a> +<span class="sourceLineNo">230</span><a name="line.230"></a> +<span class="sourceLineNo">231</span> String rack = this.rackManager.getRack(sn);<a name="line.231"></a> +<span class="sourceLineNo">232</span> if (!racksToIndex.containsKey(rack)) {<a name="line.232"></a> +<span class="sourceLineNo">233</span> racksToIndex.put(rack, numRacks++);<a name="line.233"></a> +<span class="sourceLineNo">234</span> serversPerRackList.add(new ArrayList<>());<a name="line.234"></a> +<span class="sourceLineNo">235</span> }<a name="line.235"></a> +<span class="sourceLineNo">236</span> int rackIndex = racksToIndex.get(rack);<a name="line.236"></a> +<span class="sourceLineNo">237</span> serversPerRackList.get(rackIndex).add(serverIndex);<a name="line.237"></a> +<span class="sourceLineNo">238</span> }<a name="line.238"></a> +<span class="sourceLineNo">239</span><a name="line.239"></a> +<span class="sourceLineNo">240</span> // Count how many regions there are.<a name="line.240"></a> +<span class="sourceLineNo">241</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> numRegions += entry.getValue().size();<a name="line.242"></a> +<span class="sourceLineNo">243</span> }<a name="line.243"></a> +<span class="sourceLineNo">244</span> numRegions += unassignedRegions.size();<a name="line.244"></a> +<span class="sourceLineNo">245</span><a name="line.245"></a> +<span class="sourceLineNo">246</span> regionsToIndex = new HashMap<>(numRegions);<a name="line.246"></a> +<span class="sourceLineNo">247</span> servers = new ServerName[numServers];<a name="line.247"></a> +<span class="sourceLineNo">248</span> serversPerHost = new int[numHosts][];<a name="line.248"></a> +<span class="sourceLineNo">249</span> serversPerRack = new int[numRacks][];<a name="line.249"></a> +<span class="sourceLineNo">250</span> regions = new HRegionInfo[numRegions];<a name="line.250"></a> +<span class="sourceLineNo">251</span> regionIndexToServerIndex = new int[numRegions];<a name="line.251"></a> +<span class="sourceLineNo">252</span> initialRegionIndexToServerIndex = new int[numRegions];<a name="line.252"></a> +<span class="sourceLineNo">253</span> regionIndexToTableIndex = new int[numRegions];<a name="line.253"></a> +<span class="sourceLineNo">254</span> regionIndexToPrimaryIndex = new int[numRegions];<a name="line.254"></a> +<span class="sourceLineNo">255</span> regionLoads = new Deque[numRegions];<a name="line.255"></a> +<span class="sourceLineNo">256</span><a name="line.256"></a> +<span class="sourceLineNo">257</span> regionLocations = new int[numRegions][];<a name="line.257"></a> +<span class="sourceLineNo">258</span> serverIndicesSortedByRegionCount = new Integer[numServers];<a name="line.258"></a> +<span class="sourceLineNo">259</span> serverIndicesSortedByLocality = new Integer[numServers];<a name="line.259"></a> +<span class="sourceLineNo">260</span> localityPerServer = new float[numServers];<a name="line.260"></a> +<span class="sourceLineNo">261</span><a name="line.261"></a> +<span class="sourceLineNo">262</span> serverIndexToHostIndex = new int[numServers];<a name="line.262"></a> +<span class="sourceLineNo">263</span> serverIndexToRackIndex = new int[numServers];<a name="line.263"></a> +<span class="sourceLineNo">264</span> regionsPerServer = new int[numServers][];<a name="line.264"></a> +<span class="sourceLineNo">265</span> regionsPerHost = new int[numHosts][];<a name="line.265"></a> +<span class="sourceLineNo">266</span> regionsPerRack = new int[numRacks][];<a name="line.266"></a> +<span class="sourceLineNo">267</span> primariesOfRegionsPerServer = new int[numServers][];<a name="line.267"></a> +<span class="sourceLineNo">268</span> primariesOfRegionsPerHost = new int[numHosts][];<a name="line.268"></a> +<span class="sourceLineNo">269</span> primariesOfRegionsPerRack = new int[numRacks][];<a name="line.269"></a> +<span class="sourceLineNo">270</span><a name="line.270"></a> +<span class="sourceLineNo">271</span> int tableIndex = 0, regionIndex = 0, regionPerServerIndex = 0;<a name="line.271"></a> +<span class="sourceLineNo">272</span><a name="line.272"></a> +<span class="sourceLineNo">273</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.273"></a> +<span class="sourceLineNo">274</span> if (entry.getKey() == null) {<a name="line.274"></a> +<span class="sourceLineNo">275</span> LOG.warn("SERVERNAME IS NULL, skipping " + entry.getValue());<a name="line.275"></a> +<span class="sourceLineNo">276</span> continue;<a name="line.276"></a> +<span class="sourceLineNo">277</span> }<a name="line.277"></a> +<span class="sourceLineNo">278</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.278"></a> +<span class="sourceLineNo">279</span><a name="line.279"></a> +<span class="sourceLineNo">280</span> // keep the servername if this is the first server name for this hostname<a name="line.280"></a> +<span class="sourceLineNo">281</span> // or this servername has the newest startcode.<a name="line.281"></a> +<span class="sourceLineNo">282</span> if (servers[serverIndex] == null ||<a name="line.282"></a> +<span class="sourceLineNo">283</span> servers[serverIndex].getStartcode() < entry.getKey().getStartcode()) {<a name="line.283"></a> +<span class="sourceLineNo">284</span> servers[serverIndex] = entry.getKey();<a name="line.284"></a> +<span class="sourceLineNo">285</span> }<a name="line.285"></a> +<span class="sourceLineNo">286</span><a name="line.286"></a> +<span class="sourceLineNo">287</span> if (regionsPerServer[serverIndex] != null) {<a name="line.287"></a> +<span class="sourceLineNo">288</span> // there is another server with the same hostAndPort in ClusterState.<a name="line.288"></a> +<span class="sourceLineNo">289</span> // allocate the array for the total size<a name="line.289"></a> +<span class="sourceLineNo">290</span> regionsPerServer[serverIndex] = new int[entry.getValue().size() + regionsPerServer[serverIndex].length];<a name="line.290"></a> +<span class="sourceLineNo">291</span> } else {<a name="line.291"></a> +<span class="sourceLineNo">292</span> regionsPerServer[serverIndex] = new int[entry.getValue().size()];<a name="line.292"></a> +<span class="sourceLineNo">293</span> }<a name="line.293"></a> +<span class="sourceLineNo">294</span> primariesOfRegionsPerServer[serverIndex] = new int[regionsPerServer[serverIndex].length];<a name="line.294"></a> +<span class="sourceLineNo">295</span> serverIndicesSortedByRegionCount[serverIndex] = serverIndex;<a name="line.295"></a> +<span class="sourceLineNo">296</span> serverIndicesSortedByLocality[serverIndex] = serverIndex;<a name="line.296"></a> +<span class="sourceLineNo">297</span> }<a name="line.297"></a> +<span class="sourceLineNo">298</span><a name="line.298"></a> +<span class="sourceLineNo">299</span> hosts = new String[numHosts];<a name="line.299"></a> +<span class="sourceLineNo">300</span> for (Entry<String, Integer> entry : hostsToIndex.entrySet()) {<a name="line.300"></a> +<span class="sourceLineNo">301</span> hosts[entry.getValue()] = entry.getKey();<a name="line.301"></a> <span class="sourceLineNo">302</span> }<a name="line.302"></a> -<span class="sourceLineNo">303</span><a name="line.303"></a> -<span class="sourceLineNo">304</span> for (Entry<ServerName, List<HRegionInfo>> entry : clusterState.entrySet()) {<a name="line.304"></a> -<span class="sourceLineNo">305</span> int serverIndex = serversToIndex.get(entry.getKey().getHostAndPort());<a name="line.305"></a> -<span class="sourceLineNo">306</span> regionPerServerIndex = 0;<a name="line.306"></a> +<span class="sourceLineNo">303</span> racks = new String[numRacks];<a name="line.303"></a> +<span class="sourceLineNo">304</span> for (Entry<String, Integer> entry : racksToIndex.entrySet()) {<a name="line.304"></a> +<span class="sourceLineNo">305</span> racks[entry.getValue()] = entry.getKey();<a name="line.305"></a> +<span class="sourceLineNo">306</span> }<a name="line.306"></a> <span class="sourceLineNo">307</span><a name="line.307"></a> -<span class="sourceLineNo">308</span> int hostIndex = hostsToIndex.get(entry.getKey().getHostname());<a name="line.308"></a> -<span class="sourceLineNo">309</span> serverIndexToHostIndex[serverIndex] = hostIndex;<a name="line.309"></a> -<span class="sourceLineNo">310</span><a name="line.310"></a> -<span class="sourceLineNo">311</span> int rackIndex = racksToIndex.get(this.rackManager.getRack(entry.getKey()));<a name="line.311"></a> -<span class="sourceLineNo">312</span> serverIndexToRackIndex[serverIndex] = rackIndex;<a name="line.312"></a> -<span class="sourceLineNo">313</span><a name="line.313"></a> -<span class="sourceLineNo">314</span> for (HRegionInfo region : entry.getValue()) {<a name="line.314"></a> -<span class="sourceLineNo">315</span> registerRegion(region, regionIndex, serverIndex, loads, regionFinder);<a name="line.315"></a> -<span class="sourceLineNo">316</span> regionsPerServer[serverIndex][regionPerServerIndex++] = regionIndex;<a name="line.316"></a> -<span class="sourceLineNo">317</span> regionIndex++;<a 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serversPerRackList.get(i).get(j);<a name="line.339"></a> -<span class="sourceLineNo">340</span> }<a name="line.340"></a> -<span class="sourceLineNo">341</span> }<a name="line.341"></a> -<span class="sourceLineNo">342</span><a name="line.342"></a> -<span class="sourceLineNo">343</span> numTables = tables.size();<a name="line.343"></a> -<span class="sourceLineNo">344</span> numRegionsPerServerPerTable = new int[numServers][numTables];<a name="line.344"></a> -<span class="sourceLineNo">345</span><a name="line.345"></a> -<span class="sourceLineNo">346</span> for (int i = 0; i < numServers; i++) {<a name="line.346"></a> -<span class="sourceLineNo">347</span> for (int j = 0; j < numTables; j++) {<a name="line.347"></a> -<span class="sourceLineNo">348</span> numRegionsPerServerPerTable[i][j] = 0;<a name="line.348"></a> -<span class="sourceLineNo">349</span> }<a name="line.349"></a> -<span class="sourceLineNo">350</span> }<a name="line.350"></a> -<span class="sourceLineNo">351</span><a 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action to move or swap a region */<a name="line.485"></a> -<span class="sourceLineNo">486</span> public static class Action {<a name="line.486"></a> -<span class="sourceLineNo">487</span> public static enum Type {<a name="line.487"></a> -<span class="sourceLineNo">488</span> ASSIGN_REGION,<a name="line.488"></a> -<span class="sourceLineNo">489</span> MOVE_REGION,<a name="line.489"></a> -<span class="sourceLineNo">490</span> SWAP_REGIONS,<a name="line.490"></a> -<span class="sourceLineNo">491</span> NULL,<a name="line.491"></a> -<span class="sourceLineNo">492</span> }<a name="line.492"></a> -<span class="sourceLineNo">493</span><a name="line.493"></a> -<span class="sourceLineNo">494</span> public Type type;<a name="line.494"></a> -<span class="sourceLineNo">495</span> public Action (Type type) {this.type = type;}<a name="line.495"></a> -<span class="sourceLineNo">496</span> /** Returns an Action which would undo this action */<a name="line.496"></a> -<span class="sourceLineNo">497</span> public Action undoAction() { return this; }<a name="line.497"></a> -<span class="sourceLineNo">498</span> @Override<a name="line.498"></a> -<span class="sourceLineNo">499</span> public String toString() { return type + ":";}<a name="line.499"></a> -<span class="sourceLineNo">500</span> }<a name="line.500"></a> -<span class="sourceLineNo">501</span><a name="line.501"></a> -<span class="sourceLineNo">502</span> public static class AssignRegionAction extends Action {<a name="line.502"></a> -<span class="sourceLineNo">503</span> public int region;<a name="line.503"></a> -<span class="sourceLineNo">504</span> public int server;<a name="line.504"></a> -<span class="sourceLineNo">505</span> public AssignRegionAction(int region, int server) {<a name="line.505"></a> -<span class="sourceLineNo">506</span> super(Type.ASSIGN_REGION);<a name="line.506"></a> -<span class="sourceLineNo">507</span> this.region = region;<a name="line.507"></a> -<span class="sourceLineNo">508</span> this.server = server;<a name="line.508"></a> -<span class="sourceLineNo">509</span> }<a name="line.509"></a> -<span class="sourceLineNo">510</span> @Override<a name="line.510"></a> -<span class="sourceLineNo">511</span> public Action undoAction() {<a name="line.511"></a> -<span class="sourceLineNo">512</span> // TODO implement this. 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i < serversPerHostList.size(); i++) {<a name="line.330"></a> +<span class="sourceLineNo">331</span> serversPerHost[i] = new int[serversPerHostList.get(i).size()];<a name="line.331"></a> +<span class="sourceLineNo">332</span> for (int j = 0; j < serversPerHost[i].length; j++) {<a name="line.332"></a> +<span class="sourceLineNo">333</span> serversPerHost[i][j] = serversPerHostList.get(i).get(j);<a name="line.333"></a> +<span class="sourceLineNo">334</span> }<a name="line.334"></a> +<span class="sourceLineNo">335</span> if (serversPerHost[i].length > 1) {<a name="line.335"></a> +<span class="sourceLineNo">336</span> multiServersPerHost = true;<a name="line.336"></a> +<span class="sourceLineNo">337</span> }<a name="line.337"></a> +<span class="sourceLineNo">338</span> }<a name="line.338"></a> +<span class="sourceLineNo">339</span><a name="line.339"></a> +<span class="sourceLineNo">340</span> for (int i = 0; i < serversPerRackList.size(); i++) {<a name="line.340"></a> +<span class="sourceLineNo">341</span> serversPerRack[i] = new int[serversPerRackList.get(i).size()];<a name="line.341"></a> +<span class="sourceLineNo">342</span> for (int j = 0; j < serversPerRack[i].length; j++) {<a name="line.342"></a> +<span class="sourceLineNo">343</span> serversPerRack[i][j] = serversPerRackList.get(i).get(j);<a name="line.343"></a> +<span class="sourceLineNo">344</span> }<a name="line.344"></a> +<span class="sourceLineNo">345</span> }<a name="line.345"></a> +<span class="sourceLineNo">346</span><a name="line.346"></a> +<span class="sourceLineNo">347</span> numTables = tables.size();<a name="line.347"></a> +<span class="sourceLineNo">348</span> numRegionsPerServerPerTable = new int[numServers][numTables];<a name="line.348"></a> +<span class="sourceLineNo">349</span><a name="line.349"></a> +<span class="sourceLineNo">350</span> for (int i = 0; i < numServers; i++) {<a name="line.350"></a> +<span class="sourceLineNo">351</span> for (int j = 0; j < numTables; j++) {<a name="line.351"></a> +<span class="sourceLineNo">352</span> numRegionsPerServerPerTable[i][j] = 0;<a name="line.352"></a> +<span class="sourceLineNo">353</span> }<a name="line.353"></a> +<span class="sourceLineNo">354</span> }<a name="line.354"></a> +<span class="sourceLineNo">355</span><a name="line.355"></a> +<span class="sourceLineNo">356</span> for (int i=0; i < regionIndexToServerIndex.length; i++) {<a name="line.356"></a> +<span class="sourceLineNo">357</span> if (regionIndexToServerIndex[i] >= 0) {<a name="line.357"></a> +<span class="sourceLineNo">358</span> numRegionsPerServerPerTable[regionIndexToServerIndex[i]][regionIndexToTableIndex[i]]++;<a name="line.358"></a> +<span class="sourceLineNo">359</span> }<a name="line.359"></a> +<span class="sourceLineNo">360</span> }<a name="line.360"></a> +<span class="sourceLineNo">361</span><a name="line.361"></a> +<span class="sourceLineNo">362</span> numMaxRegionsPerTable = new int[numTables];<a name="line.362"></a> +<span class="sourceLineNo">363</span> for (int serverIndex = 0 ; serverIndex < numRegionsPerServerPerTable.length; serverIndex++) {<a name="line.363"></a> +<span class="sourceLineNo">364</span> for (tableIndex = 0 ; tableIndex < numRegionsPerServerPerTable[serverIndex].length; tableIndex++) {<a name="line.364"></a> +<span class="sourceLineNo">365</span> if (numRegionsPerServerPerTable[serverIndex][tableIndex] > numMaxRegionsPerTable[tableIndex]) {<a name="line.365"></a> +<span class="sourceLineNo">366</span> numMaxRegionsPerTable[tableIndex] = numRegionsPerServerPerTable[serverIndex][tableIndex];<a name="line.366"></a> +<span class="sourceLineNo">367</span> }<a name="line.367"></a> +<span class="sourceLineNo">368</span> }<a name="line.368"></a> +<span class="sourceLineNo">369</span> }<a name="line.369"></a> +<span class="sourceLineNo">370</span><a name="line.370"></a> +<span class="sourceLineNo">371</span> for (int i = 0; i < regions.length; i ++) {<a name="line.371"></a> +<span class="sourceLineNo">372</span> HRegionInfo info = regions[i];<a name="line.372"></a> +<span class="sourceLineNo">373</span> if (RegionReplicaUtil.isDefaultReplica(info)) {<a name="line.373"></a> +<span class="sourceLineNo">374</span> regionIndexToPrimaryIndex[i] = i;<a name="line.374"></a> +<span class="sourceLineNo">375</span> } else {<a name="line.375"></a> +<span class="sourceLineNo">376</span> hasRegionReplicas = true;<a name="line.376"></a> +<span class="sourceLineNo">377</span> HRegionInfo primaryInfo = RegionReplicaUtil.getRegionInfoForDefaultReplica(info);<a name="line.377"></a> +<span class="sourceLineNo">378</span> regionIndexToPrimaryIndex[i] =<a name="line.378"></a> +<span class="sourceLineNo">379</span> regionsToIndex.containsKey(primaryInfo) ?<a name="line.379"></a> +<span class="sourceLineNo">380</span> regionsToIndex.get(primaryInfo):<a name="line.380"></a> +<span class="sourceLineNo">381</span> -1;<a name="line.381"></a> +<span class="sourceLineNo">382</span> }<a name="line.382"></a> +<span class="sourceLineNo">383</span> }<a name="line.383"></a> +<span class="sourceLineNo">384</span><a name="line.384"></a> +<span class="sourceLineNo">385</span> for (int i = 0; i < regionsPerServer.length; i++) {<a name="line.385"></a> +<span class="sourceLineNo">386</span> primariesOfRegionsPerServer[i] = new int[regionsPerServer[i].length];<a name="line.386"></a> +<span class="sourceLineNo">387</span> for (int j = 0; j < regionsPerServer[i].length; j++) {<a name="line.387"></a> +<span class="sourceLineNo">388</span> int primaryIndex = regionIndexToPrimaryIndex[regionsPerServer[i][j]];<a name="line.388"></a> +<span class="sourceLineNo">389</span> primariesOfRegionsPerServer[i][j] = primaryIndex;<a name="line.389"></a> +<span class="sourceLineNo">390</span> }<a name="line.390"></a> +<span class="sourceLineNo">391</span> // sort the regions by primaries.<a name="line.391"></a> +<span class="sourceLineNo">392</span> Arrays.sort(primariesOfRegionsPerServer[i]);<a name="line.392"></a> +<span class="sourceLineNo">393</span> }<a name="line.393"></a> +<span class="sourceLineNo">394</span><a name="line.394"></a> +<span class="sourceLineNo">395</span> // compute regionsPerHost<a name="line.395"></a> +<span class="sourceLineNo">396</span> if (multiServersPerHost) {<a name="line.396"></a> +<span class="sourceLineNo">397</span> for (int i = 0 ; i < serversPerHost.length; i++) {<a name="line.397"></a> +<span class="sourceLineNo">398</span> int numRegionsPerHost = 0;<a name="line.398"></a> +<span class="sourceLineNo">399</span> for (int j = 0; j < serversPerHost[i].length; j++) {<a name="line.399"></a> +<span class="sourceLineNo">400</span> numRegionsPerHost += regionsPerServer[serversPerHost[i][j]].length;<a name="line.400"></a> +<span class="sourceLineNo">401</span> }<a name="line.401"></a> +<span class="sourceLineNo">402</span> regionsPerHost[i] = new int[numRegionsPerHost];<a name="line.402"></a> +<span class="sourceLineNo">403</span> primariesOfRegionsPerHost[i] = new int[numRegionsPerHost];<a name="line.403"></a> +<span class="sourceLineNo">404</span> }<a name="line.404"></a> +<span class="sourceLineNo">405</span> for (int i = 0 ; i < serversPerHost.length; i++) {<a name="line.405"></a> +<span class="sourceLineNo">406</span> int numRegionPerHostIndex = 0;<a name="line.406"></a> +<span class="sourceLineNo">407</span> for (int j = 0; j < serversPerHost[i].length; j++) {<a name="line.407"></a> +<span class="sourceLineNo">408</span> for (int k = 0; k < regionsPerServer[serversPerHost[i][j]].length; k++) {<a name="line.408"></a> +<span class="sourceLineNo">409</span> int region = regionsPerServer[serversPerHost[i][j]][k];<a name="line.409"></a> +<span class="sourceLineNo">410</span> regionsPerHost[i][numRegionPerHostIndex] = region;<a name="line.410"></a> +<span class="sourceLineNo">411</span> int primaryIndex = regionIndexToPrimaryIndex[region];<a name="line.411"></a> +<span class="sourceLineNo">412</span> primariesOfRegionsPerHost[i][numRegionPerHostIndex] = primaryIndex;<a name="line.412"></a> +<span class="sourceLineNo">413</span> numRegionPerHostIndex++;<a name="line.413"></a> +<span class="sourceLineNo">414</span> }<a name="line.414"></a> +<span class="sourceLineNo">415</span> }<a name="line.415"></a> +<span class="sourceLineNo">416</span> // sort the regions by primaries.<a name="line.416"></a> +<span class="sourceLineNo">417</span> Arrays.sort(primariesOfRegionsPerHost[i]);<a name="line.417"></a> +<span class="sourceLineNo">418</span> }<a name="line.418"></a> +<span class="sourceLineNo">419</span> }<a name="line.419"></a> +<span class="sourceLineNo">420</span><a name="line.420"></a> +<span class="sourceLineNo">421</span> // compute regionsPerRack<a name="line.421"></a> +<span class="sourceLineNo">422</span> if (numRacks > 1) {<a name="line.422"></a> +<span class="sourceLineNo">423</span> for (int i = 0 ; i < serversPerRack.length; i++) {<a name="line.423"></a> +<span class="sourceLineNo">424</span> int numRegionsPerRack = 0;<a name="line.424"></a> +<span class="sourceLineNo">425</span> for (int j = 0; j < serversPerRack[i].length; j++) {<a name="line.425"></a> +<span class="sourceLineNo">426</span> numRegionsPerRack += regionsPerServer[serversPerRack[i][j]].length;<a name="line.426"></a> +<span class="sourceLineNo">427</span> }<a name="line.427"></a> +<span class="sourceLineNo">428</span> regionsPerRack[i] = new int[numRegionsPerRack];<a name="line.428"></a> +<span class="sourceLineNo">429</span> primariesOfRegionsPerRack[i] = new int[numRegionsPerRack];<a name="line.429"></a> +<span class="sourceLineNo">430</span> }<a name="line.430"></a> +<span class="sourceLineNo">431</span><a name="line.431"></a> +<span class="sourceLineNo">432</span> for (int i = 0 ; i < serversPerRack.length; i++) {<a name="line.432"></a> +<span class="sourceLineNo">433</span> int numRegionPerRackIndex = 0;<a name="line.433"></a> +<span class="sourceLineNo">434</span> for (int j = 0; j < serversPerRack[i].length; j++) {<a name="line.434"></a> +<span class="sourceLineNo">435</span> for (int k = 0; k < regionsPerServer[serversPerRack[i][j]].length; k++) {<a name="line.435"></a> +<span class="sourceLineNo">436</span> int region = regionsPerServer[serversPerRack[i][j]][k];<a name="line.436"></a> +<span class="sourceLineNo">437</span> regionsPerRack[i][numRegionPerRackIndex] = region;<a name="line.437"></a> +<span class="sourceLineNo">438</span> int primaryIndex = regionIndexToPrimaryIndex[region];<a name="line.438"></a> +<span class="sourceLineNo">439</span> primariesOfRegionsPerRack[i][numRegionPerRackIndex] = primaryIndex;<a name="line.439"></a> +<span class="sourceLineNo">440</span> numRegionPerRackIndex++;<a name="line.440"></a> +<span class="sourceLineNo">441</span> }<a name="line.441"></a> +<span class="sourceLineNo">442</span> }<a name="line.442"></a> +<span class="sourceLineNo">443</span> // sort the regions by primaries.<a name="line.443"></a> +<span class="sourceLineNo">444</span> Arrays.sort(primariesOfRegionsPerRack[i]);<a name="line.444"></a> +<span class="sourceLineNo">445</span> }<a name="line.445"></a> +<span class="sourceLineNo">446</span> }<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> /** Helper for Cluster constructor to handle a region */<a name="line.449"></a> +<span class="sourceLineNo">450</span> private void registerRegion(HRegionInfo region, int regionIndex,<a name="line.450"></a> +<span class="sourceLineNo">451</span> int serverIndex, Map<String, Deque<BalancerRegionLoad>> loads,<a name="line.451"></a> +<span class="sourceLineNo">452</span> RegionLocationFinder regionFinder) {<a name="line.452"></a> +<span class="sourceLineNo">453</span> String tableName = region.getTable().getNameAsString();<a name="line.453"></a> +<span class="sourceLineNo">454</span> if (!tablesToIndex.containsKey(tableName)) {<a name="line.454"></a> +<span class="sourceLineNo">455</span> tables.add(tableName);<a name="line.455"></a> +<span class="sourceLineNo">456</span> tablesToIndex.put(tableName, tablesToIndex.size());<a name="line.456"></a> +<span class="sourceLineNo">457</span> }<a name="line.457"></a> +<span class="sourceLineNo">458</span> int tableIndex = tablesToIndex.get(tableName);<a name="line.458"></a> +<span class="sourceLineNo">459</span><a name="line.459"></a> +<span class="sourceLineNo">460</span> regionsToIndex.put(region, regionIndex);<a name="line.460"></a> +<span class="sourceLineNo">461</span> regions[regionIndex] = region;<a name="line.461"></a> +<span class="sourceLineNo">462</span> regionIndexToServerIndex[regionIndex] = serverIndex;<a name="line.462"></a> +<span class="sourceLineNo">463</span> initialRegionIndexToServerIndex[regionIndex] = serverIndex;<a name="line.463"></a> +<span class="sourceLineNo">464</span> regionIndexToTableIndex[regionIndex] = tableIndex;<a name="line.464"></a> +<span class="sourceLineNo">465</span><a name="line.465"></a> +<span class="sourceLineNo">466</span> // region load<a name="line.466"></a> +<span class="sourceLineNo">467</span> if (loads != null) {<a name="line.467"></a> +<span class="sourceLineNo">468</span> Deque<BalancerRegionLoad> rl = loads.get(region.getRegionNameAsString());<a name="line.468"></a> +<span class="sourceLineNo">469</span> // That could have failed if the RegionLoad is using the other regionName<a name="line.469"></a> +<span class="sourceLineNo">470</span> if (rl == null) {<a name="line.470"></a> +<span class="sourceLineNo">471</span> // Try getting the region load using encoded name.<a name="line.471"></a> +<span class="sourceLineNo">472</span> rl = loads.get(region.getEncodedName());<a name="line.472"></a> +<span class="sourceLineNo">473</span> }<a name="line.473"></a> +<span class="sourceLineNo">474</span> regionLoads[regionIndex] = rl;<a name="line.474"></a> +<span class="sourceLineNo">475</span> }<a name="line.475"></a> +<span class="sourceLineNo">476</span><a name="line.476"></a> +<span class="sourceLineNo">477</span> if (regionFinder != null) {<a name="line.477"></a> +<span class="sourceLineNo">478</span> // region location<a name="line.478"></a> +<span class="sourceLineNo">479</span> List<ServerName> loc = regionFinder.getTopBlockLocations(region);<a name="line.479"></a> +<span class="sourceLineNo">480</span> regionLocations[regionIndex] = new int[loc.size()];<a name="line.480"></a> +<span class="sourceLineNo">481</span> for (int i = 0; i < loc.size(); i++) {<a name="line.481"></a> +<span class="sourceLineNo">482</span> regionLocations[regionIndex][i] = loc.get(i) == null ? -1<a name="line.482"></a> +<span class="sourceLineNo">483</span> : (serversToIndex.get(loc.get(i).getHostAndPort()) == null ? -1<a name="line.483"></a> +<span class="sourceLineNo">484</span> : serversToIndex.get(loc.get(i).getHostAndPort()));<a name="line.484"></a> +<span class="sourceLineNo">485</span> }<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> /**<a name="line.489"></a> +<span class="sourceLineNo">490</span> * Returns true iff a given server has less regions than the balanced amount<a name="line.490"></a> +<span class="sourceLineNo">491</span> */<a name="line.491"></a> +<span class="sourceLineNo">492</span> public boolean serverHasTooFewRegions(int server) {<a name="line.492"></a> +<span class="sourceLineNo">493</span> int minLoad = this.numRegions / numServers;<a name="line.493"></a> +<span class="sourceLineNo">494</span> int numRegions = getNumRegions(server);<a name="line.494"></a> +<span class="sourceLineNo">495</span> return numRegions < minLoad;<a name="line.495"></a> +<span class="sourceLineNo">496</span> }<a name="line.496"></a> +<span class="sourceLineNo">497</span><a name="line.497"></a> +<span class="sourceLineNo">498</span> /**<a name="line.498"></a> +<span class="sourceLineNo">499</span> * Retrieves and lazily initializes a field storing the locality of<a name="line.499"></a> +<span class="sourceLineNo">500</span> * every region/server combination<a name="line.500"></a> +<span class="sourceLineNo">501</span> */<a name="line.501"></a> +<span class="sourceLineNo">502</span> public float[][] getOrComputeRackLocalities() {<a name="line.502"></a> +<span class="sourceLineNo">503</span> if (rackLocalities == null || regionsToMostLocalEntities == null) {<a name="line.503"></a> +<span class="sourceLineNo">504</span> computeCachedLocalities();<a name="line.504"></a> +<span class="sourceLineNo">505</span> }<a name="line.505"></a> +<span class="sourceLineNo">506</span> return rackLocalities;<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> /**<a name="line.509"></a> +<span class="sourceLineNo">510</span> * Lazily initializes and retrieves a mapping of region -> server for which region has<a name="line.510"></a> +<span class="sourceLineNo">511</span> * the highest the locality<a name="line.511"></a> +<span class="sourceLineNo">512</span> */<a name="line.512"></a> +<span class="sourceLineNo">513</span> public int[] getOrComputeRegionsToMostLocalEntities(LocalityType type) {<a name="line.513"></a> +<span class="sourceLineNo">514</span> if (rackLocalities == null || regionsToMostLocalEntities == null) {<a name="line.514"></a> +<span class="sourceLineNo">515</span> computeCachedLocalities();<a name="line.515"></a> +<span class="sourceLineNo">516</span> }<a name="line.516"></a> +<span class="sourceLineNo">517</span> return regionsToMostLocalEntities[type.ordinal()];<a name="line.517"></a> +<span class="sourceLineNo">518</span> }<a name="line.518"></a> +<span class="sourceLineNo">519</span><a name="line.519"></a> +<span class="sourceLineNo">520</span> /**<a name="line.520"></a> +<span class="sourceLineNo">521</span> * Looks up locality from cache of localities. 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Too disruptive to change now")<a name="line.566"></a> -<span class="sourceLineNo">567</span> public static final Action NullAction = new Action(Type.NULL);<a name="line.567"></a> -<span class="sourceLineNo">568</span><a name="line.568"></a> -<span class="sourceLineNo">569</span> public void doAction(Action action) {<a name="line.569"></a> -<span class="sourceLineNo">570</span> switch (action.type) {<a name="line.570"></a> -<span class="sourceLineNo">571</span> case NULL: break;<a name="line.571"></a> -<span class="sourceLineNo">572</span> case ASSIGN_REGION:<a name="line.572"></a> -<span class="sourceLineNo">573</span> // FindBugs: Having the assert quietens FB BC_UNCONFIRMED_CAST warnings<a name="line.573"></a> -<span class="sourceLineNo">574</span> assert action instanceof AssignRegionAction: action.getClass();<a name="line.574"></a> -<span class="sourceLineNo">575</span> AssignRegionAction ar = (AssignRegionAction) action;<a name="line.575"></a> -<span class="sourceLineNo">576</span> regionsPerServer[ar.server] = addRegion(regionsPerServer[ar.server], ar.region);<a name="line.576"></a> -<span class="sourceLineNo">577</span> regionMoved(ar.region, -1, ar.server);<a name="line.577"></a> -<span class="sourceLineNo">578</span> break;<a name="line.578"></a> -<span class="sourceLineNo">579</span> case MOVE_REGION:<a name="line.579"></a> -<span class="sourceLineNo">580</span> assert action instanceof MoveRegionAction: action.getClass();<a name="line.580"></a> -<span class="sourceLineNo">581</span> MoveRegionAction mra = (MoveRegionAction) action;<a name="line.581"></a> -<span class="sourceLineNo">582</span> regionsPerServer[mra.fromServer] = removeRegion(regionsPerServer[mra.fromServer], mra.region);<a name="line.582"></a> -<span class="sourceLineNo">583</span> regionsPerServer[mra.toServer] = addRegion(regionsPerServer[mra.toServer], mra.region);<a name="line.583"></a> -<span class="sourceLineNo">584</span> regionMoved(mra.region, mra.fromServer, mra.toServer);<a name="line.584"></a> -<span class="sourceLineNo">585</span> break;<a name="line.585"></a> -<span class="sourceLineNo">586</span> case SWAP_REGIONS:<a name="line.586"></a> -<span class="sourceLineNo">587</span> assert action instanceof SwapRegionsAction: action.getClass();<a name="line.587"></a> -<span class="sourceLineNo">588</span> SwapRegionsAction a = (SwapRegionsAction) action;<a name="line.588"></a> -<span class="sourceLineNo">589</span> regionsPerServer[a.fromServer] = replaceRegion(regionsPerServer[a.fromServer], a.fromRegion, a.toRegion);<a name="line.589"></a> -<span class="sourceLineNo">590</span> regionsPerServer[a.toServer] = replaceRegion(regionsPerServer[a.toServer], a.toRegion, a.fromRegion);<a name="line.590"></a> -<span class="sourceLineNo">591</span> regionMoved(a.fromRegion, a.fromServer, a.toServer);<a name="line.591"></a> -<span class="sourceLineNo">592</span> regionMoved(a.toRegion, a.toServer, a.fromServer);<a name="line.592"></a> -<span class="sourceLineNo">593</span> break;<a name="line.593"></a> -<span class="sourceLineNo">594</span> default:<a name="line.594"></a> -<span class="sourceLineNo">595</span> throw new RuntimeException("Uknown action:" + action.type);<a name="line.595"></a> -<span class="sourceLineNo">596</span> }<a name="line.596"></a> -<span class="sourceLineNo">597</span> }<a name="line.597"></a> -<span class="sourceLineNo">598</span><a name="line.598"></a> -<span class="sourceLineNo">599</span> /**<a name="line.599"></a> -<span class="sourceLineNo">600</span> * Return true if the placement of region on server would lower the availability<a name="line.600"></a> -<span class="sourceLineNo">601</span> * of the region in question<a name="line.601"></a> -<span class="sourceLineNo">602</span> * @return true or false<a name="line.602"></a> -<span class="sourceLineNo">603</span> */<a name="line.603"></a> -<span class="sourceLineNo">604</span> boolean wouldLowerAvailability(HRegionInfo regionInfo, ServerName serverName) {<a name="line.604"></a> -<span class="sourceLineNo">605</span> if (!serversToIndex.containsKey(serverName.getHostAndPort())) {<a name="line.605"></a> -<span class="sourceLineNo">606</span> return false; 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i < primariesOfRegionsPerServer.length; i++) {<a name="line.618"></a> -<span class="sourceLineNo">619</span> if (i != server && !contains(primariesOfRegionsPerServer[i], primary)) {<a name="line.619"></a> -<span class="sourceLineNo">620</span> return true; // meaning there is a better server<a name="line.620"></a> -<span class="sourceLineNo">621</span> }<a name="line.621"></a> -<span class="sourceLineNo">622</span> }<a name="line.622"></a> -<span class="sourceLineNo">623</span> return false; // there is not a better server to place this<a name="line.623"></a> -<span class="sourceLineNo">624</span> }<a name="line.624"></a> +<span class="sourceLineNo">543</span> /**<a name="line.543"></a> +<span class="sourceLineNo">544</span> * Returns the size in MB from the most recent RegionLoad for region<a name="line.544"></a> +<span class="sourceLineNo">545</span> */<a name="line.545"></a> +<span class="sourceLineNo">546</span> public int getRegionSizeMB(int region) {<a name="line.546"></a> +<span class="sourceLineNo">547</span> Deque<BalancerRegionLoad> load = regionLoads[region];<a name="line.547"></a> +<span class="sourceLineNo">548</span> // This means regions have no actual data on disk<a name="line.548"></a> +<span class="sourceLineNo">549</span> if (load == null) {<a name="line.549"></a> +<span class="sourceLineNo">550</span> return 0;<a name="line.550"></a> +<span class="sourceLineNo">551</span> }<a name="line.551"></a> +<span class="sourceLineNo">552</span> return regionLoads[region].getLast().getStorefileSizeMB();<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> /**<a name="line.555"></a> +<span class="sourceLineNo">556</span> * Computes and caches the locality for each region/rack combinations,<a name="line.556"></a> +<span class="sourceLineNo">557</span> * as well as storing a mapping of region -> server and region -> rack such that server<a name="line.557"></a> +<span class="sourceLineNo">558</span> * and rack have the highest locality for region<a name="line.558"></a> +<span class="sourceLineNo">559</span> */<a name="line.559"></a> +<span class="sourceLineNo">560</span> private void computeCachedLocalities() {<a name="line.560"></a> +<span class="sourceLineNo">561</span> rackLocalities = new float[numRegions][numServers];<a name="line.561"></a> +<span class="sourceLineNo">562</span> regionsToMostLocalEntities = new int[LocalityType.values().length][numRegions];<a name="line.562"></a> +<span class="sourceLineNo">563</span><a name="line.563"></a> +<span class="sourceLineNo">564</span> // Compute localities and find most local server per region<a name="line.564"></a> +<span class="sourceLineNo">565</span> for (int region = 0; region < numRegions; region++) {<a name="line.565"></a> +<span class="sourceLineNo">566</span> int serverWithBestLocality = 0;<a name="line.566"></a> +<span class="sourceLineNo">567</span> float bestLocalityForRegion = 0;<a name="line.567"></a> +<span class="sourceLineNo">568</span> for (int server = 0; server < numServers; server++) {<a name="line.568"></a> +<span class="sourceLineNo">569</span> // Aggregate per-rack locality<a name="line.569"></a> +<span class="sourceLineNo">570</span> float locality = getLocalityOfRegion(region, server);<a name="line.570"></a> +<span class="sourceLineNo">571</span> int rack = serverIndexToRackIndex[server];<a name="line.571"></a> +<span class="sourceLineNo">572</span> int numServersInRack = serversPerRack[rack].length;<a name="line.572"></a> +<span class="sourceLineNo">573</span> rackLocalities[region][rack] += locality / numServersInRack;<a name="line.573"></a> +<span class="sourceLineNo">574</span><a name="line.574"></a> +<span class="sourceLineNo">575</span> if (locality > bestLocalityForRegion) {<a name="line.575"></a> +<span class="sourceLineNo">576</span> serverWithBestLocality = server;<a name="line.576"></a> +<span class="sourceLineNo">577</span> bestLocalityForRegion = locality;<a name="line.577"></a> +<span class="sourceLineNo">578</span> }<a name="line.578"></a> +<span class="sourceLineNo">579</span> }<a name="line.579"></a> +<span class="sourceLineNo">58
<TRUNCATED>
