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Posted to commits@hbase.apache.org by gi...@apache.org on 2017/08/22 15:07:09 UTC
[15/21] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b7626a4c/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
index 883a87d..6eb57fa 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
@@ -54,1801 +54,1804 @@
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.RegionStateListener;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.ServerName;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.TableName;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.AssignmentListener;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.NoSuchProcedureException;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerState;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerStateNode;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>// TODO: why are they here?<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.master.normalizer.RegionNormalizer;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.master.procedure.ProcedureSyncWait;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.procedure2.util.StringUtils;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.79"></a>
-<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;<a name="line.80"></a>
-<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.81"></a>
-<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;<a name="line.82"></a>
-<span class="sourceLineNo">083</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;<a name="line.83"></a>
-<span class="sourceLineNo">084</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.84"></a>
-<span class="sourceLineNo">085</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.85"></a>
-<span class="sourceLineNo">086</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.86"></a>
-<span class="sourceLineNo">087</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.87"></a>
-<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.util.VersionInfo;<a name="line.88"></a>
-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.90"></a>
-<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.Lists;<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>/**<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * The AssignmentManager is the coordinator for region assign/unassign operations.<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * <ul><a name="line.95"></a>
-<span class="sourceLineNo">096</span> * <li>In-memory states of regions and servers are stored in {@link RegionStates}.</li><a name="line.96"></a>
-<span class="sourceLineNo">097</span> * <li>hbase:meta state updates are handled by {@link RegionStateStore}.</li><a name="line.97"></a>
-<span class="sourceLineNo">098</span> * </ul><a name="line.98"></a>
-<span class="sourceLineNo">099</span> * Regions are created by CreateTable, Split, Merge.<a name="line.99"></a>
-<span class="sourceLineNo">100</span> * Regions are deleted by DeleteTable, Split, Merge.<a name="line.100"></a>
-<span class="sourceLineNo">101</span> * Assigns are triggered by CreateTable, EnableTable, Split, Merge, ServerCrash.<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * Unassigns are triggered by DisableTable, Split, Merge<a name="line.102"></a>
-<span class="sourceLineNo">103</span> */<a name="line.103"></a>
-<span class="sourceLineNo">104</span>@InterfaceAudience.Private<a name="line.104"></a>
-<span class="sourceLineNo">105</span>public class AssignmentManager implements ServerListener {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> private static final Log LOG = LogFactory.getLog(AssignmentManager.class);<a name="line.106"></a>
-<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span> // TODO: AMv2<a name="line.108"></a>
-<span class="sourceLineNo">109</span> // - handle region migration from hbase1 to hbase2.<a name="line.109"></a>
-<span class="sourceLineNo">110</span> // - handle sys table assignment first (e.g. acl, namespace)<a name="line.110"></a>
-<span class="sourceLineNo">111</span> // - handle table priorities<a name="line.111"></a>
-<span class="sourceLineNo">112</span> // - If ServerBusyException trying to update hbase:meta, we abort the Master<a name="line.112"></a>
-<span class="sourceLineNo">113</span> // See updateRegionLocation in RegionStateStore.<a name="line.113"></a>
-<span class="sourceLineNo">114</span> //<a name="line.114"></a>
-<span class="sourceLineNo">115</span> // See also<a name="line.115"></a>
-<span class="sourceLineNo">116</span> // https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.ystjyrkbtoq5<a name="line.116"></a>
-<span class="sourceLineNo">117</span> // for other TODOs.<a name="line.117"></a>
-<span class="sourceLineNo">118</span><a name="line.118"></a>
-<span class="sourceLineNo">119</span> public static final String BOOTSTRAP_THREAD_POOL_SIZE_CONF_KEY =<a name="line.119"></a>
-<span class="sourceLineNo">120</span> "hbase.assignment.bootstrap.thread.pool.size";<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span> public static final String ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY =<a name="line.122"></a>
-<span class="sourceLineNo">123</span> "hbase.assignment.dispatch.wait.msec";<a name="line.123"></a>
-<span class="sourceLineNo">124</span> private static final int DEFAULT_ASSIGN_DISPATCH_WAIT_MSEC = 150;<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> public static final String ASSIGN_DISPATCH_WAITQ_MAX_CONF_KEY =<a name="line.126"></a>
-<span class="sourceLineNo">127</span> "hbase.assignment.dispatch.wait.queue.max.size";<a name="line.127"></a>
-<span class="sourceLineNo">128</span> private static final int DEFAULT_ASSIGN_DISPATCH_WAITQ_MAX = 100;<a name="line.128"></a>
-<span class="sourceLineNo">129</span><a name="line.129"></a>
-<span class="sourceLineNo">130</span> public static final String RIT_CHORE_INTERVAL_MSEC_CONF_KEY =<a name="line.130"></a>
-<span class="sourceLineNo">131</span> "hbase.assignment.rit.chore.interval.msec";<a name="line.131"></a>
-<span class="sourceLineNo">132</span> private static final int DEFAULT_RIT_CHORE_INTERVAL_MSEC = 5 * 1000;<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> public static final String ASSIGN_MAX_ATTEMPTS =<a name="line.134"></a>
-<span class="sourceLineNo">135</span> "hbase.assignment.maximum.attempts";<a name="line.135"></a>
-<span class="sourceLineNo">136</span> private static final int DEFAULT_ASSIGN_MAX_ATTEMPTS = 10;<a name="line.136"></a>
-<span class="sourceLineNo">137</span><a name="line.137"></a>
-<span class="sourceLineNo">138</span> /** Region in Transition metrics threshold time */<a name="line.138"></a>
-<span class="sourceLineNo">139</span> public static final String METRICS_RIT_STUCK_WARNING_THRESHOLD =<a name="line.139"></a>
-<span class="sourceLineNo">140</span> "hbase.metrics.rit.stuck.warning.threshold";<a name="line.140"></a>
-<span class="sourceLineNo">141</span> private static final int DEFAULT_RIT_STUCK_WARNING_THRESHOLD = 60 * 1000;<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> private final ProcedureEvent<?> metaInitializedEvent = new ProcedureEvent<>("meta initialized");<a name="line.143"></a>
-<span class="sourceLineNo">144</span> private final ProcedureEvent<?> metaLoadEvent = new ProcedureEvent<>("meta load");<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> * Indicator that AssignmentManager has recovered the region states so<a name="line.147"></a>
-<span class="sourceLineNo">148</span> * that ServerCrashProcedure can be fully enabled and re-assign regions<a name="line.148"></a>
-<span class="sourceLineNo">149</span> * of dead servers. So that when re-assignment happens, AssignmentManager<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * has proper region states.<a name="line.150"></a>
-<span class="sourceLineNo">151</span> */<a name="line.151"></a>
-<span class="sourceLineNo">152</span> private final ProcedureEvent<?> failoverCleanupDone = new ProcedureEvent<>("failover cleanup");<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span> /** Listeners that are called on assignment events. */<a name="line.154"></a>
-<span class="sourceLineNo">155</span> private final CopyOnWriteArrayList<AssignmentListener> listeners =<a name="line.155"></a>
-<span class="sourceLineNo">156</span> new CopyOnWriteArrayList<AssignmentListener>();<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> // TODO: why is this different from the listeners (carried over from the old AM)<a name="line.158"></a>
-<span class="sourceLineNo">159</span> private RegionStateListener regionStateListener;<a name="line.159"></a>
-<span class="sourceLineNo">160</span><a name="line.160"></a>
-<span class="sourceLineNo">161</span> private RegionNormalizer regionNormalizer;<a name="line.161"></a>
-<span class="sourceLineNo">162</span><a name="line.162"></a>
-<span class="sourceLineNo">163</span> private final MetricsAssignmentManager metrics;<a name="line.163"></a>
-<span class="sourceLineNo">164</span> private final RegionInTransitionChore ritChore;<a name="line.164"></a>
-<span class="sourceLineNo">165</span> private final MasterServices master;<a name="line.165"></a>
-<span class="sourceLineNo">166</span><a name="line.166"></a>
-<span class="sourceLineNo">167</span> private final AtomicBoolean running = new AtomicBoolean(false);<a name="line.167"></a>
-<span class="sourceLineNo">168</span> private final RegionStates regionStates = new RegionStates();<a name="line.168"></a>
-<span class="sourceLineNo">169</span> private final RegionStateStore regionStateStore;<a name="line.169"></a>
-<span class="sourceLineNo">170</span><a name="line.170"></a>
-<span class="sourceLineNo">171</span> private final boolean shouldAssignRegionsWithFavoredNodes;<a name="line.171"></a>
-<span class="sourceLineNo">172</span> private final int assignDispatchWaitQueueMaxSize;<a name="line.172"></a>
-<span class="sourceLineNo">173</span> private final int assignDispatchWaitMillis;<a name="line.173"></a>
-<span class="sourceLineNo">174</span> private final int assignMaxAttempts;<a name="line.174"></a>
-<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> private final Object checkIfShouldMoveSystemRegionLock = new Object();<a name="line.176"></a>
-<span class="sourceLineNo">177</span><a name="line.177"></a>
-<span class="sourceLineNo">178</span> private Thread assignThread;<a name="line.178"></a>
-<span class="sourceLineNo">179</span><a name="line.179"></a>
-<span class="sourceLineNo">180</span> public AssignmentManager(final MasterServices master) {<a name="line.180"></a>
-<span class="sourceLineNo">181</span> this(master, new RegionStateStore(master));<a name="line.181"></a>
-<span class="sourceLineNo">182</span> }<a name="line.182"></a>
-<span class="sourceLineNo">183</span><a name="line.183"></a>
-<span class="sourceLineNo">184</span> public AssignmentManager(final MasterServices master, final RegionStateStore stateStore) {<a name="line.184"></a>
-<span class="sourceLineNo">185</span> this.master = master;<a name="line.185"></a>
-<span class="sourceLineNo">186</span> this.regionStateStore = stateStore;<a name="line.186"></a>
-<span class="sourceLineNo">187</span> this.metrics = new MetricsAssignmentManager();<a name="line.187"></a>
-<span class="sourceLineNo">188</span><a name="line.188"></a>
-<span class="sourceLineNo">189</span> final Configuration conf = master.getConfiguration();<a name="line.189"></a>
-<span class="sourceLineNo">190</span><a name="line.190"></a>
-<span class="sourceLineNo">191</span> // Only read favored nodes if using the favored nodes load balancer.<a name="line.191"></a>
-<span class="sourceLineNo">192</span> this.shouldAssignRegionsWithFavoredNodes = FavoredStochasticBalancer.class.isAssignableFrom(<a name="line.192"></a>
-<span class="sourceLineNo">193</span> conf.getClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS, Object.class));<a name="line.193"></a>
-<span class="sourceLineNo">194</span><a name="line.194"></a>
-<span class="sourceLineNo">195</span> this.assignDispatchWaitMillis = conf.getInt(ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY,<a name="line.195"></a>
-<span class="sourceLineNo">196</span> DEFAULT_ASSIGN_DISPATCH_WAIT_MSEC);<a name="line.196"></a>
-<span class="sourceLineNo">197</span> this.assignDispatchWaitQueueMaxSize = conf.getInt(ASSIGN_DISPATCH_WAITQ_MAX_CONF_KEY,<a name="line.197"></a>
-<span class="sourceLineNo">198</span> DEFAULT_ASSIGN_DISPATCH_WAITQ_MAX);<a name="line.198"></a>
-<span class="sourceLineNo">199</span><a name="line.199"></a>
-<span class="sourceLineNo">200</span> this.assignMaxAttempts = Math.max(1, conf.getInt(ASSIGN_MAX_ATTEMPTS,<a name="line.200"></a>
-<span class="sourceLineNo">201</span> DEFAULT_ASSIGN_MAX_ATTEMPTS));<a name="line.201"></a>
-<span class="sourceLineNo">202</span><a name="line.202"></a>
-<span class="sourceLineNo">203</span> int ritChoreInterval = conf.getInt(RIT_CHORE_INTERVAL_MSEC_CONF_KEY,<a name="line.203"></a>
-<span class="sourceLineNo">204</span> DEFAULT_RIT_CHORE_INTERVAL_MSEC);<a name="line.204"></a>
-<span class="sourceLineNo">205</span> this.ritChore = new RegionInTransitionChore(ritChoreInterval);<a name="line.205"></a>
-<span class="sourceLineNo">206</span><a name="line.206"></a>
-<span class="sourceLineNo">207</span> // Used for region related procedure.<a name="line.207"></a>
-<span class="sourceLineNo">208</span> setRegionNormalizer(master.getRegionNormalizer());<a name="line.208"></a>
-<span class="sourceLineNo">209</span> }<a name="line.209"></a>
-<span class="sourceLineNo">210</span><a name="line.210"></a>
-<span class="sourceLineNo">211</span> public void start() throws IOException {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> if (!running.compareAndSet(false, true)) {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> return;<a name="line.213"></a>
-<span class="sourceLineNo">214</span> }<a name="line.214"></a>
-<span class="sourceLineNo">215</span><a name="line.215"></a>
-<span class="sourceLineNo">216</span> LOG.info("Starting assignment manager");<a name="line.216"></a>
-<span class="sourceLineNo">217</span><a name="line.217"></a>
-<span class="sourceLineNo">218</span> // Register Server Listener<a name="line.218"></a>
-<span class="sourceLineNo">219</span> master.getServerManager().registerListener(this);<a name="line.219"></a>
-<span class="sourceLineNo">220</span><a name="line.220"></a>
-<span class="sourceLineNo">221</span> // Start the RegionStateStore<a name="line.221"></a>
-<span class="sourceLineNo">222</span> regionStateStore.start();<a name="line.222"></a>
-<span class="sourceLineNo">223</span><a name="line.223"></a>
-<span class="sourceLineNo">224</span> // Start the Assignment Thread<a name="line.224"></a>
-<span class="sourceLineNo">225</span> startAssignmentThread();<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span><a name="line.227"></a>
-<span class="sourceLineNo">228</span> public void stop() {<a name="line.228"></a>
-<span class="sourceLineNo">229</span> if (!running.compareAndSet(true, false)) {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> return;<a name="line.230"></a>
-<span class="sourceLineNo">231</span> }<a name="line.231"></a>
-<span class="sourceLineNo">232</span><a name="line.232"></a>
-<span class="sourceLineNo">233</span> LOG.info("Stopping assignment manager");<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span> // The AM is started before the procedure executor,<a name="line.235"></a>
-<span class="sourceLineNo">236</span> // but the actual work will be loaded/submitted only once we have the executor<a name="line.236"></a>
-<span class="sourceLineNo">237</span> final boolean hasProcExecutor = master.getMasterProcedureExecutor() != null;<a name="line.237"></a>
-<span class="sourceLineNo">238</span><a name="line.238"></a>
-<span class="sourceLineNo">239</span> // Remove the RIT chore<a name="line.239"></a>
-<span class="sourceLineNo">240</span> if (hasProcExecutor) {<a name="line.240"></a>
-<span class="sourceLineNo">241</span> master.getMasterProcedureExecutor().removeChore(this.ritChore);<a name="line.241"></a>
-<span class="sourceLineNo">242</span> }<a name="line.242"></a>
-<span class="sourceLineNo">243</span><a name="line.243"></a>
-<span class="sourceLineNo">244</span> // Stop the Assignment Thread<a name="line.244"></a>
-<span class="sourceLineNo">245</span> stopAssignmentThread();<a name="line.245"></a>
-<span class="sourceLineNo">246</span><a name="line.246"></a>
-<span class="sourceLineNo">247</span> // Stop the RegionStateStore<a name="line.247"></a>
-<span class="sourceLineNo">248</span> regionStates.clear();<a name="line.248"></a>
-<span class="sourceLineNo">249</span> regionStateStore.stop();<a name="line.249"></a>
-<span class="sourceLineNo">250</span><a name="line.250"></a>
-<span class="sourceLineNo">251</span> // Unregister Server Listener<a name="line.251"></a>
-<span class="sourceLineNo">252</span> master.getServerManager().unregisterListener(this);<a name="line.252"></a>
-<span class="sourceLineNo">253</span><a name="line.253"></a>
-<span class="sourceLineNo">254</span> // Update meta events (for testing)<a name="line.254"></a>
-<span class="sourceLineNo">255</span> if (hasProcExecutor) {<a name="line.255"></a>
-<span class="sourceLineNo">256</span> getProcedureScheduler().suspendEvent(metaLoadEvent);<a name="line.256"></a>
-<span class="sourceLineNo">257</span> setFailoverCleanupDone(false);<a name="line.257"></a>
-<span class="sourceLineNo">258</span> for (HRegionInfo hri: getMetaRegionSet()) {<a name="line.258"></a>
-<span class="sourceLineNo">259</span> setMetaInitialized(hri, false);<a name="line.259"></a>
-<span class="sourceLineNo">260</span> }<a name="line.260"></a>
-<span class="sourceLineNo">261</span> }<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> public boolean isRunning() {<a name="line.264"></a>
-<span class="sourceLineNo">265</span> return running.get();<a name="line.265"></a>
-<span class="sourceLineNo">266</span> }<a name="line.266"></a>
-<span class="sourceLineNo">267</span><a name="line.267"></a>
-<span class="sourceLineNo">268</span> public Configuration getConfiguration() {<a name="line.268"></a>
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-<span class="sourceLineNo">451</span> // TODO: Sync helpers<a name="line.451"></a>
-<span class="sourceLineNo">452</span> // ============================================================================================<a name="line.452"></a>
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-<span class="sourceLineNo">489</span> // handling.<a name="line.489"></a>
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-<span class="sourceLineNo">494</span> for (HRegionInfo regionInfo : regionsShouldMove) {<a name="line.494"></a>
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-<span class="sourceLineNo">522</span> .map(RegionStateNode::getRegionInfo)<a name="line.522"></a>
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-<span class="sourceLineNo">525</span> }<a name="line.525"></a>
-<span class="sourceLineNo">526</span><a name="line.526"></a>
-<span class="sourceLineNo">527</span> public void assign(final HRegionInfo regionInfo) throws IOException {<a name="line.527"></a>
-<span class="sourceLineNo">528</span> assign(regionInfo, true);<a name="line.528"></a>
-<span class="sourceLineNo">529</span> }<a name="line.529"></a>
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-<span class="sourceLineNo">531</span> public void assign(final HRegionInfo regionInfo, final boolean forceNewPlan) throws IOException {<a name="line.531"></a>
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-<span class="sourceLineNo">534</span> }<a name="line.534"></a>
-<span class="sourceLineNo">535</span><a name="line.535"></a>
-<span class="sourceLineNo">536</span> public void unassign(final HRegionInfo regionInfo) throws IOException {<a name="line.536"></a>
-<span class="sourceLineNo">537</span> unassign(regionInfo, false);<a name="line.537"></a>
-<span class="sourceLineNo">538</span> }<a name="line.538"></a>
-<span class="sourceLineNo">539</span><a name="line.539"></a>
-<span class="sourceLineNo">540</span> public void unassign(final HRegionInfo regionInfo, final boolean forceNewPlan)<a name="line.540"></a>
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-<span class="sourceLineNo">542</span> // TODO: rename this reassign<a name="line.542"></a>
-<span class="sourceLineNo">543</span> RegionStateNode node = this.regionStates.getRegionNode(regionInfo);<a name="line.543"></a>
-<span class="sourceLineNo">544</span> ServerName destinationServer = node.getRegionLocation();<a name="line.544"></a>
-<span class="sourceLineNo">545</span> if (destinationServer == null) {<a name="line.545"></a>
-<span class="sourceLineNo">546</span> throw new UnexpectedStateException("DestinationServer is null; Assigned? " + node.toString());<a name="line.546"></a>
-<span class="sourceLineNo">547</span> }<a name="line.547"></a>
-<span class="sourceLineNo">548</span> assert destinationServer != null; node.toString();<a name="line.548"></a>
-<span class="sourceLineNo">549</span> UnassignProcedure proc = createUnassignProcedure(regionInfo, destinationServer, forceNewPlan);<a name="line.549"></a>
-<span class="sourceLineNo">550</span> ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.550"></a>
-<span class="sourceLineNo">551</span> }<a name="line.551"></a>
-<span class="sourceLineNo">552</span><a name="line.552"></a>
-<span class="sourceLineNo">553</span> public Future<byte[]> moveAsync(final RegionPlan regionPlan) {<a name="line.553"></a>
-<span class="sourceLineNo">554</span> MoveRegionProcedure proc = createMoveRegionProcedure(regionPlan);<a name="line.554"></a>
-<span class="sourceLineNo">555</span> return ProcedureSyncWait.submitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.555"></a>
-<span class="sourceLineNo">556</span> }<a name="line.556"></a>
-<span class="sourceLineNo">557</span><a name="line.557"></a>
-<span class="sourceLineNo">558</span> @VisibleForTesting<a name="line.558"></a>
-<span class="sourceLineNo">559</span> public boolean waitForAssignment(final HRegionInfo regionInfo) throws IOException {<a name="line.559"></a>
-<span class="sourceLineNo">560</span> return waitForAssignment(regionInfo, Long.MAX_VALUE);<a name="line.560"></a>
-<span class="sourceLineNo">561</span> }<a name="line.561"></a>
-<span class="sourceLineNo">562</span><a name="line.562"></a>
-<span class="sourceLineNo">563</span> @VisibleForTesting<a name="line.563"></a>
-<span class="sourceLineNo">564</span> // TODO: Remove this?<a name="line.564"></a>
-<span class="sourceLineNo">565</span> public boolean waitForAssignment(final HRegionInfo regionInfo, final long timeout)<a name="line.565"></a>
-<span class="sourceLineNo">566</span> throws IOException {<a name="line.566"></a>
-<span class="sourceLineNo">567</span> RegionStateNode node = null;<a name="line.567"></a>
-<span class="sourceLineNo">568</span> // This method can be called before the regionInfo has made it into the regionStateMap<a name="line.568"></a>
-<span class="sourceLineNo">569</span> // so wait around here a while.<a name="line.569"></a>
-<span class="sourceLineNo">570</span> long startTime = System.currentTimeMillis();<a name="line.570"></a>
-<span class="sourceLineNo">571</span> // Something badly wrong if takes ten seconds to register a region.<a name="line.571"></a>
-<span class="sourceLineNo">572</span> long endTime = startTime + 10000;<a name="line.572"></a>
-<span class="sourceLineNo">573</span> while ((node = regionStates.getRegionNode(regionInfo)) == null && isRunning() &&<a name="line.573"></a>
-<span class="sourceLineNo">574</span> System.currentTimeMillis() < endTime) {<a name="line.574"></a>
-<span class="sourceLineNo">575</span> // Presume it not yet added but will be added soon. Let it spew a lot so we can tell if<a name="line.575"></a>
-<span class="sourceLineNo">576</span> // we are waiting here alot.<a name="line.576"></a>
-<span class="sourceLineNo">577</span> LOG.debug("Waiting on " + regionInfo + " to be added to regionStateMap");<a name="line.577"></a>
-<span class="sourceLineNo">578</span> Threads.sleep(10);<a name="line.578"></a>
-<span class="sourceLineNo">579</span> }<a name="line.579"></a>
-<span class="sourceLineNo">580</span> if (node == null) {<a name="line.580"></a>
-<span class="sourceLineNo">581</span> if (!isRunning()) return false;<a name="line.581"></a>
-<span class="sourceLineNo">582</span> throw new RegionException(regionInfo.getRegionNameAsString() + " never registered with Assigment.");<a name="line.582"></a>
-<span class="sourceLineNo">583</span> }<a name="line.583"></a>
-<span class="sourceLineNo">584</span><a name="line.584"></a>
-<span class="sourceLineNo">585</span> RegionTransitionProcedure proc = node.getProcedure();<a name="line.585"></a>
-<span class="sourceLineNo">586</span> if (proc == null) {<a name="line.586"></a>
-<span class="sourceLineNo">587</span> throw new NoSuchProcedureException(node.toString());<a name="line.587"></a>
-<span class="sourceLineNo">588</span> }<a name="line.588"></a>
-<span class="sourceLineNo">589</span><a name="line.589"></a>
-<span class="sourceLineNo">590</span> ProcedureSyncWait.waitForProcedureToCompleteIOE(<a name="line.590"></a>
-<span class="sourceLineNo">591</span> master.getMasterProcedureExecutor(), proc.getProcId(), timeout);<a name="line.591"></a>
-<span class="sourceLineNo">592</span> return true;<a name="line.592"></a>
-<span class="sourceLineNo">593</span> }<a name="line.593"></a>
-<span class="sourceLineNo">594</span><a name="line.594"></a>
-<span class="sourceLineNo">595</span> // ============================================================================================<a name="line.595"></a>
-<span class="sourceLineNo">596</span> // RegionTransition procedures helpers<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> public AssignProcedure[] createAssignProcedures(final Collection<HRegionInfo> regionInfo) {<a name="line.599"></a>
-<span class="sourceLineNo">600</span> return createAssignProcedures(regionInfo, false);<a name="line.600"></a>
-<span class="sourceLineNo">601</span> }<a name="line.601"></a>
-<span class="sourceLineNo">602</span><a name="line.602"></a>
-<span class="sourceLineNo">603</span> public AssignProcedure[] createAssignProcedures(final Collection<HRegionInfo> regionInfo,<a name="line.603"></a>
-<span class="sourceLineNo">604</span> final boolean forceNewPlan) {<a name="line.604"></a>
-<span class="sourceLineNo">605</span> if (regionInfo.isEmpty()) return null;<a name="line.605"></a>
-<span class="sourceLineNo">606</span> final AssignProcedure[] procs = new AssignProcedure[regionInfo.size()];<a name="line.606"></a>
-<span class="sourceLineNo">607</span> int index = 0;<a name="line.607"></a>
-<span class="sourceLineNo">608</span> for (HRegionInfo hri: regionInfo) {<a name="line.608"></a>
-<span class="sourceLineNo">609</span> procs[index++] = createAssignProcedure(hri, forceNewPlan);<a name="line.609"></a>
-<span class="sourceLineNo">610</span> }<a name="line.610"></a>
-<span class="sourceLineNo">611</span> return procs;<a name="line.611"></a>
-<span class="sourceLineNo">612</span> }<a name="line.612"></a>
-<span class="sourceLineNo">613</span><a name="line.613"></a>
-<span class="sourceLineNo">614</span> // Needed for the following method so it can type the created Array we return<a name="line.614"></a>
-<span class="sourceLineNo">615</span> private static final UnassignProcedure [] UNASSIGNED_PROCEDURE_FOR_TYPE_INFO =<a name="line.615"></a>
-<span class="sourceLineNo">616</span> new UnassignProcedure[0];<a name="line.616"></a>
-<span class="sourceLineNo">617</span><a name="line.617"></a>
-<span class="sourceLineNo">618</span> UnassignProcedure[] createUnassignProcedures(final Collection<RegionStateNode> nodes) {<a name="line.618"></a>
-<span class="sourceLineNo">619</span> if (nodes.isEmpty()) return null;<a name="line.619"></a>
-<span class="sourceLineNo">620</span> final List<UnassignProcedure> procs = new ArrayList<UnassignProcedure>(nodes.size());<a name="line.620"></a>
-<span class="sourceLineNo">621</span> for (RegionStateNode node: nodes) {<a name="line.621"></a>
-<span class="sourceLineNo">622</span> if (!this.regionStates.include(node, false)) continue;<a name="line.622"></a>
-<span class="sourceLineNo">623</span> // Look for regions that are offline/closed; i.e. already unassigned.<a name="line.623"></a>
-<span class="sourceLineNo">624</span> if (this.regionStates.isRegionOffline(node.getRegionInfo())) continue;<a name="line.624"></a>
-<span class="sourceLineNo">625</span> assert node.getRegionLocation() != null: node.toString();<a name="line.625"></a>
-<span class="sourceLineNo">626</span> procs.add(createUnassignProcedure(node.getRegionInfo(), node.getRegionLocation(), false));<a name="line.626"></a>
-<span class="sourceLineNo">627</span> }<a name="line.627"></a>
-<span class="sourceLineNo">628</span> return procs.toArray(UNASSIGNED_PROCEDURE_FOR_TYPE_INFO);<a name="line.628"></a>
-<span class="sourceLineNo">629</span> }<a name="line.629"></a>
-<span class="sourceLineNo">630</span><a name="line.630"></a>
-<span class="sourceLineNo">631</span> public MoveRegionProcedure[] createReopenProcedures(final Collection<HRegionInfo> regionInfo) {<a name="line.631"></a>
-<span class="sourceLineNo">632</span> final MoveRegionProcedure[] procs = new MoveRegionProcedure[regionInfo.size()];<a name="line.632"></a>
-<span class="sourceLineNo">633</span> int index = 0;<a name="line.633"></a>
-<span class="sourceLineNo">634</span> for (HRegionInfo hri: regionInfo) {<a name="line.634"></a>
-<span class="sourceLineNo">635</span> final ServerName serverName = regionStates.getRegionServerOfRegion(hri);<a name="line.635"></a>
-<span class="sourceLineNo">636</span> final RegionPlan plan = new RegionPlan(hri, serverName, serverName);<a name="line.636"></a>
-<span class="sourceLineNo">637</span> procs[index++] = createMoveRegionProcedure(plan);<a name="line.637"></a>
-<span class="sourceLineNo">638</span> }<a name="line.638"></a>
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-<span class="sourceLineNo">640</span> }<a name="line.640"></a>
-<span class="sourceLineNo">641</span><a name="line.641"></a>
-<span class="sourceLineNo">642</span> /**<a name="line.642"></a>
-<span class="sourceLineNo">643</span> * Called by things like EnableTableProcedure to get a list of AssignProcedure<a name="line.643"></a>
-<span class="sourceLineNo">644</span> * to assign the regions of the table.<a name="line.644"></a>
-<span class="sourceLineNo">645</span> */<a name="line.645"></a>
-<span class="sourceLineNo">646</span> public AssignProcedure[] createAssignProcedures(final TableName tableName) {<a name="line.646"></a>
-<span class="sourceLineNo">647</span> return createAssignProcedures(regionStates.getRegionsOfTable(tableName));<a name="line.647"></a>
-<span class="sourceLineNo">648</span> }<a name="line.648"></a>
-<span class="sourceLineNo">649</span><a name="line.649"></a>
-<span class="sourceLineNo">650</span> /**<a name="line.650"></a>
-<span class="sourceLineNo">651</span> * Called by things like DisableTableProcedure to get a list of UnassignProcedure<a name="line.651"></a>
-<span class="sourceLineNo">652</span> * to unassign the regions of the table.<a name="line.652"></a>
-<span class="sourceLineNo">653</span> */<a name="line.653"></a>
-<span class="sourceLineNo">654</span> public UnassignProcedure[] createUnassignProcedures(final TableName tableName) {<a name="line.654"></a>
-<span class="sourceLineNo">655</span> return createUnassignProcedures(regionStates.getTableRegionStateNodes(tableName));<a name="line.655"></a>
-<span class="sourceLineNo">656</span> }<a name="line.656"></a>
-<span class="sourceLineNo">657</span><a name="line.657"></a>
-<span class="sourceLineNo">658</span> /**<a name="line.658"></a>
-<span class="sourceLineNo">659</span> * Called by things like ModifyColumnFamilyProcedure to get a list of MoveRegionProcedure<a name="line.659"></a>
-<span class="sourceLineNo">660</span> * to reopen the regions of the table.<a name="line.660"></a>
-<span class="sourceLineNo">661</span> */<a name="line.661"></a>
-<span class="sourceLineNo">662</span> public MoveRegionProcedure[] createReopenProcedures(final TableName tableName) {<a name="line.662"></a>
-<span class="sourceLineNo">663</span> return createReopenProcedures(regionStates.getRegionsOfTable(tableName));<a name="line.663"></a>
-<span class="sourceLineNo">664</span> }<a name="line.664"></a>
-<span class="sourceLineNo">665</span><a name="line.665"></a>
-<span class="sourceLineNo">666</span> public AssignProcedure createAssignProcedure(final HRegionInfo regionInfo,<a name="line.666"></a>
-<span class="sourceLineNo">667</span> final boolean forceNewPlan) {<a name="line.667"></a>
-<span class="sourceLineNo">668</span> AssignProcedure proc = new AssignProcedure(regionInfo, forceNewPlan);<a name="line.668"></a>
-<span class="sourceLineNo">669</span> proc.setOwner(getProcedureEnvironment().getRequestUser().getShortName());<a name="line.669"></a>
-<span class="sourceLineNo">670</span> return proc;<a name="line.670"></a>
-<span class="sourceLineNo">671</span> }<a name="line.671"></a>
-<span class="sourceLineNo">672</span><a name="line.672"></a>
-<span class="sourceLineNo">673</span> public AssignProcedure createAssignProcedure(final HRegionInfo regionInfo,<a name="line.673"></a>
-<span class="sourceLineNo">674</span> final ServerName targetServer) {<a name="line.674"></a>
-<span class="sourceLineNo">675</span> AssignProcedure proc = new AssignProcedure(regionInfo, targetServer);<a name="line.675"></a>
-<span class="sourceLineNo">676</span> proc.setOwner(getProcedureEnvironment().getRequestUser().getShortName());<a name="line.676"></a>
-<span class="sourceLineNo">677</span> return proc;<a name="line.677"></a>
-<span class="sourceLineNo">678</span> }<a name="line.678"></a>
-<span class="sourceLineNo">679</span><a name="line.679"></a>
-<span class="sourceLineNo">680</span> public UnassignProcedure createUnassignProcedure(final HRegionInfo regionInfo,<a name="line.680"></a>
-<span class="sourceLineNo">681</span> final ServerName destinationServer, final boolean force) {<a name="line.681"></a>
-<span class="sourceLineNo">682</span> // If destinationServer is null, figure it.<a name="line.682"></a>
-<span class="sourceLineNo">683</span> ServerName sn = destinationServer != null? destinationServer:<a name="line.683"></a>
-<span class="sourceLineNo">684</span> getRegionStates().getRegionState(regionInfo).getServerName();<a name="line.684"></a>
-<span class="sourceLineNo">685</span> assert sn != null;<a name="line.685"></a>
-<span class="sourceLineNo">686</span> UnassignProcedure proc = new UnassignProcedure(regionInfo, sn, force);<a name="line.686"></a>
-<span class="sourceLineNo">687</span> proc.setOwner(getProcedureEnvironment().getRequestUser().getShortName());<a name="line.687"></a>
-<span class="sourceLineNo">688</span> return proc;<a name="line.688"></a>
-<span class="sourceLineNo">689</span> }<a name="line.689"></a>
-<span class="sourceLineNo">690</span><a name="line.690"></a>
-<span class="sourceLineNo">691</span> public MoveRegionProcedure createMoveRegionProcedure(final RegionPlan plan) {<a name="line.691"></a>
-<span class="sourceLineNo">692</span> if (plan.getRegionInfo().isSystemTable()) {<a name="line.692"></a>
-<span class="sourceLineNo">693</span> List<ServerName> exclude = getExcludedServersForSystemTable();<a name="line.693"></a>
-<span class="sourceLineNo">694</span> if (plan.getDestination() != null && exclude.contains(plan.getDestination())) {<a name="line.694"></a>
-<span class="sourceLineNo">695</span> try {<a name="line.695"></a>
-<span class="sourceLineNo">696</span> LOG.info("Can not move " + plan.getRegionInfo() + " to " + plan.getDestination()<a name="line.696"></a>
-<span class="sourceLineNo">697</span> + " because the server is not with highest version");<a name="line.697"></a>
-<span class="sourceLineNo">698</span> plan.setDestination(getBalancer().randomAssignment(plan.getRegionInfo(),<a name="line.698"></a>
-<span class="sourceLineNo">699</span> this.master.getServerManager().createDestinationServersList(exclude)));<a name="line.699"></a>
-<span class="sourceLineNo">700</span> } catch (HBaseIOException e) {<a name="line.700"></a>
-<span class="sourceLineNo">701</span> LOG.warn(e);<a name="line.701"></a>
-<span class="sourceLineNo">702</span> }<a name="line.702"></a>
-<span class="sourceLineNo">703</span> }<a name="line.703"></a>
-<span class="sourceLineNo">704</span> }<a name="line.704"></a>
-<span class="sourceLineNo">705</span> return new MoveRegionProcedure(getProcedureEnvironment(), plan);<a name="line.705"></a>
-<span class="sourceLineNo">706</span> }<a name="line.706"></a>
-<span class="sourceLineNo">707</span><a name="line.707"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.YouAreDeadException;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.AssignmentListener;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.NoSuchProcedureException;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerState;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerStateNode;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>// TODO: why are they here?<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.master.normalizer.RegionNormalizer;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.master.procedure.ProcedureSyncWait;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.procedure2.util.StringUtils;<a name="line.79"></a>
+<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;<a name="line.81"></a>
+<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.82"></a>
+<span class="sourceLineNo">083</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;<a name="line.83"></a>
+<span class="sourceLineNo">084</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.85"></a>
+<span class="sourceLineNo">086</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.86"></a>
+<span class="sourceLineNo">087</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.87"></a>
+<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.88"></a>
+<span class="sourceLineNo">089</span>import org.apache.hadoop.hbase.util.VersionInfo;<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.91"></a>
+<span class="sourceLineNo">092</span>import org.apache.hadoop.hbase.shaded.com.google.common.collect.Lists;<a name="line.92"></a>
+<span class="sourceLineNo">093</span><a name="line.93"></a>
+<span class="sourceLineNo">094</span>/**<a name="line.94"></a>
+<span class="sourceLineNo">095</span> * The AssignmentManager is the coordinator for region assign/unassign operations.<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * <ul><a name="line.96"></a>
+<span class="sourceLineNo">097</span> * <li>In-memory states of regions and servers are stored in {@link RegionStates}.</li><a name="line.97"></a>
+<span class="sourceLineNo">098</span> * <li>hbase:meta state updates are handled by {@link RegionStateStore}.</li><a name="line.98"></a>
+<span class="sourceLineNo">099</span> * </ul><a name="line.99"></a>
+<span class="sourceLineNo">100</span> * Regions are created by CreateTable, Split, Merge.<a name="line.100"></a>
+<span class="sourceLineNo">101</span> * Regions are deleted by DeleteTable, Split, Merge.<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * Assigns are triggered by CreateTable, EnableTable, Split, Merge, ServerCrash.<a name="line.102"></a>
+<span class="sourceLineNo">103</span> * Unassigns are triggered by DisableTable, Split, Merge<a name="line.103"></a>
+<span class="sourceLineNo">104</span> */<a name="line.104"></a>
+<span class="sourceLineNo">105</span>@InterfaceAudience.Private<a name="line.105"></a>
+<span class="sourceLineNo">106</span>public class AssignmentManager implements ServerListener {<a name="line.106"></a>
+<span class="sourceLineNo">107</span> private static final Log LOG = LogFactory.getLog(AssignmentManager.class);<a name="line.107"></a>
+<span class="sourceLineNo">108</span><a name="line.108"></a>
+<span class="sourceLineNo">109</span> // TODO: AMv2<a name="line.109"></a>
+<span class="sourceLineNo">110</span> // - handle region migration from hbase1 to hbase2.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> // - handle sys table assignment first (e.g. acl, namespace)<a name="line.111"></a>
+<span class="sourceLineNo">112</span> // - handle table priorities<a name="line.112"></a>
+<span class="sourceLineNo">113</span> // - If ServerBusyException trying to update hbase:meta, we abort the Master<a name="line.113"></a>
+<span class="sourceLineNo">114</span> // See updateRegionLocation in RegionStateStore.<a name="line.114"></a>
+<span class="sourceLineNo">115</span> //<a name="line.115"></a>
+<span class="sourceLineNo">116</span> // See also<a name="line.116"></a>
+<span class="sourceLineNo">117</span> // https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.ystjyrkbtoq5<a name="line.117"></a>
+<span class="sourceLineNo">118</span> // for other TODOs.<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
+<span class="sourceLineNo">120</span> public static final String BOOTSTRAP_THREAD_POOL_SIZE_CONF_KEY =<a name="line.120"></a>
+<span class="sourceLineNo">121</span> "hbase.assignment.bootstrap.thread.pool.size";<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> public static final String ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY =<a name="line.123"></a>
+<span class="sourceLineNo">124</span> "hbase.assignment.dispatch.wait.msec";<a name="line.124"></a>
+<span class="sourceLineNo">125</span> private static final int DEFAULT_ASSIGN_DISPATCH_WAIT_MSEC = 150;<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span> public static final String ASSIGN_DISPATCH_WAITQ_MAX_CONF_KEY =<a name="line.127"></a>
+<span class="sourceLineNo">128</span> "hbase.assignment.dispatch.wait.queue.max.size";<a name="line.128"></a>
+<span class="sourceLineNo">129</span> private static final int DEFAULT_ASSIGN_DISPATCH_WAITQ_MAX = 100;<a name="line.129"></a>
+<span class="sourceLineNo">130</span><a name="line.130"></a>
+<span class="sourceLineNo">131</span> public static final String RIT_CHORE_INTERVAL_MSEC_CONF_KEY =<a name="line.131"></a>
+<span class="sourceLineNo">132</span> "hbase.assignment.rit.chore.interval.msec";<a name="line.132"></a>
+<span class="sourceLineNo">133</span> private static final int DEFAULT_RIT_CHORE_INTERVAL_MSEC = 5 * 1000;<a name="line.133"></a>
+<span class="sourceLineNo">134</span><a name="line.134"></a>
+<span class="sourceLineNo">135</span> public static final String ASSIGN_MAX_ATTEMPTS =<a name="line.135"></a>
+<span class="sourceLineNo">136</span> "hbase.assignment.maximum.attempts";<a name="line.136"></a>
+<span class="sourceLineNo">137</span> private static final int DEFAULT_ASSIGN_MAX_ATTEMPTS = 10;<a name="line.137"></a>
+<span class="sourceLineNo">138</span><a name="line.138"></a>
+<span class="sourceLineNo">139</span> /** Region in Transition metrics threshold time */<a name="line.139"></a>
+<span class="sourceLineNo">140</span> public static final String METRICS_RIT_STUCK_WARNING_THRESHOLD =<a name="line.140"></a>
+<span class="sourceLineNo">141</span> "hbase.metrics.rit.stuck.warning.threshold";<a name="line.141"></a>
+<span class="sourceLineNo">142</span> private static final int DEFAULT_RIT_STUCK_WARNING_THRESHOLD = 60 * 1000;<a name="line.142"></a>
+<span class="sourceLineNo">143</span><a name="line.143"></a>
+<span class="sourceLineNo">144</span> private final ProcedureEvent<?> metaInitializedEvent = new ProcedureEvent<>("meta initialized");<a name="line.144"></a>
+<span class="sourceLineNo">145</span> private final ProcedureEvent<?> metaLoadEvent = new ProcedureEvent<>("meta load");<a name="line.145"></a>
+<span class="sourceLineNo">146</span><a name="line.146"></a>
+<span class="sourceLineNo">147</span> /**<a name="line.147"></a>
+<span class="sourceLineNo">148</span> * Indicator that AssignmentManager has recovered the region states so<a name="line.148"></a>
+<span class="sourceLineNo">149</span> * that ServerCrashProcedure can be fully enabled and re-assign regions<a name="line.149"></a>
+<span class="sourceLineNo">150</span> * of dead servers. So that when re-assignment happens, AssignmentManager<a name="line.150"></a>
+<span class="sourceLineNo">151</span> * has proper region states.<a name="line.151"></a>
+<span class="sourceLineNo">152</span> */<a name="line.152"></a>
+<span class="sourceLineNo">153</span> private final ProcedureEvent<?> failoverCleanupDone = new ProcedureEvent<>("failover cleanup");<a name="line.153"></a>
+<span class="sourceLineNo">154</span><a name="line.154"></a>
+<span class="sourceLineNo">155</span> /** Listeners that are called on assignment events. */<a name="line.155"></a>
+<span class="sourceLineNo">156</span> private final CopyOnWriteArrayList<AssignmentListener> listeners =<a name="line.156"></a>
+<span class="sourceLineNo">157</span> new CopyOnWriteArrayList<AssignmentListener>();<a name="line.157"></a>
+<span class="sourceLineNo">158</span><a name="line.158"></a>
+<span class="sourceLineNo">159</span> // TODO: why is this different from the listeners (carried over from the old AM)<a name="line.159"></a>
+<span class="sourceLineNo">160</span> private RegionStateListener regionStateListener;<a name="line.160"></a>
+<span class="sourceLineNo">161</span><a name="line.161"></a>
+<span class="sourceLineNo">162</span> private RegionNormalizer regionNormalizer;<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> private final MetricsAssignmentManager metrics;<a name="line.164"></a>
+<span class="sourceLineNo">165</span> private final RegionInTransitionChore ritChore;<a name="line.165"></a>
+<span class="sourceLineNo">166</span> private final MasterServices master;<a name="line.166"></a>
+<span class="sourceLineNo">167</span><a name="line.167"></a>
+<span class="sourceLineNo">168</span> private final AtomicBoolean running = new AtomicBoolean(false);<a name="line.168"></a>
+<span class="sourceLineNo">169</span> private final RegionStates regionStates = new RegionStates();<a name="line.169"></a>
+<span class="sourceLineNo">170</span> private final RegionStateStore regionStateStore;<a name="line.170"></a>
+<span class="sourceLineNo">171</span><a name="line.171"></a>
+<span class="sourceLineNo">172</span> private final boolean shouldAssignRegionsWithFavoredNodes;<a name="line.172"></a>
+<span class="sourceLineNo">173</span> private final int assignDispatchWaitQueueMaxSize;<a name="line.173"></a>
+<span class="sourceLineNo">174</span> private final int assignDispatchWaitMillis;<a name="line.174"></a>
+<span class="sourceLineNo">175</span> private final int assignMaxAttempts;<a name="line.175"></a>
+<span class="sourceLineNo">176</span><a name="line.176"></a>
+<span class="sourceLineNo">177</span> private final Object checkIfShouldMoveSystemRegionLock = new Object();<a name="line.177"></a>
+<span class="sourceLineNo">178</span><a name="line.178"></a>
+<span class="sourceLineNo">179</span> private Thread assignThread;<a name="line.179"></a>
+<span class="sourceLineNo">180</span><a name="line.180"></a>
+<span class="sourceLineNo">181</span> public AssignmentManager(final MasterServices master) {<a name="line.181"></a>
+<span class="sourceLineNo">182</span> this(master, new RegionStateStore(master));<a name="line.182"></a>
+<span class="sourceLineNo">183</span> }<a name="line.183"></a>
+<span class="sourceLineNo">184</span><a name="line.184"></a>
+<span class="sourceLineNo">185</span> public AssignmentManager(final MasterServices master, final RegionStateStore stateStore) {<a name="line.185"></a>
+<span class="sourceLineNo">186</span> this.master = master;<a name="line.186"></a>
+<span class="sourceLineNo">187</span> this.regionStateStore = stateStore;<a name="line.187"></a>
+<span class="sourceLineNo">188</span> this.metrics = new MetricsAssignmentManager();<a name="line.188"></a>
+<span class="sourceLineNo">189</span><a name="line.189"></a>
+<span class="sourceLineNo">190</span> final Configuration conf = master.getConfiguration();<a name="line.190"></a>
+<span class="sourceLineNo">191</span><a name="line.191"></a>
+<span class="sourceLineNo">192</span> // Only read favored nodes if using the favored nodes load balancer.<a name="line.192"></a>
+<span class="sourceLineNo">193</span> this.shouldAssignRegionsWithFavoredNodes = FavoredStochasticBalancer.class.isAssignableFrom(<a name="line.193"></a>
+<span class="sourceLineNo">194</span> conf.getClass(HConstants.HBASE_MASTER_LOADBALANCER_CLASS, Object.class));<a name="line.194"></a>
+<span class="sourceLineNo">195</span><a name="line.195"></a>
+<span class="sourceLineNo">196</span> this.assignDispatchWaitMillis = conf.getInt(ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY,<a name="line.196"></a>
+<span class="sourceLineNo">197</span> DEFAULT_ASSIGN_DISPATCH_WAIT_MSEC);<a name="line.197"></a>
+<span class="sourceLineNo">198</span> this.assignDispatchWaitQueueMaxSize = conf.getInt(ASSIGN_DISPATCH_WAITQ_MAX_CONF_KEY,<a name="line.198"></a>
+<span class="sourceLineNo">199</span> DEFAULT_ASSIGN_DISPATCH_WAITQ_MAX);<a name="line.199"></a>
+<span class="sourceLineNo">200</span><a name="line.200"></a>
+<span class="sourceLineNo">201</span> this.assignMaxAttempts = Math.max(1, conf.getInt(ASSIGN_MAX_ATTEMPTS,<a name="line.201"></a>
+<span class="sourceLineNo">202</span> DEFAULT_ASSIGN_MAX_ATTEMPTS));<a name="line.202"></a>
+<span class="sourceLineNo">203</span><a name="line.203"></a>
+<span class="sourceLineNo">204</span> int ritChoreInterval = conf.getInt(RIT_CHORE_INTERVAL_MSEC_CONF_KEY,<a name="line.204"></a>
+<span class="sourceLineNo">205</span> DEFAULT_RIT_CHORE_INTERVAL_MSEC);<a name="line.205"></a>
+<span class="sourceLineNo">206</span> this.ritChore = new RegionInTransitionChore(ritChoreInterval);<a name="line.206"></a>
+<span class="sourceLineNo">207</span><a name="line.207"></a>
+<span class="sourceLineNo">208</span> // Used for region related procedure.<a name="line.208"></a>
+<span class="sourceLineNo">209</span> setRegionNormalizer(master.getRegionNormalizer());<a name="line.209"></a>
+<span class="sourceLineNo">210</span> }<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span> public void start() throws IOException {<a name="line.212"></a>
+<span class="sourceLineNo">213</span> if (!running.compareAndSet(false, true)) {<a name="line.213"></a>
+<span class="sourceLineNo">214</span> return;<a name="line.214"></a>
+<span class="sourceLineNo">215</span> }<a name="line.215"></a>
+<span class="sourceLineNo">216</span><a name="line.216"></a>
+<span class="sourceLineNo">217</span> LOG.info("Starting assignment manager");<a name="line.217"></a>
+<span class="sourceLineNo">218</span><a name="line.218"></a>
+<span class="sourceLineNo">219</span> // Register Server Listener<a name="line.219"></a>
+<span class="sourceLineNo">220</span> master.getServerManager().registerListener(this);<a name="line.220"></a>
+<span class="sourceLineNo">221</span><a name="line.221"></a>
+<span class="sourceLineNo">222</span> // Start the RegionStateStore<a name="line.222"></a>
+<span class="sourceLineNo">223</span> regionStateStore.start();<a name="line.223"></a>
+<span class="sourceLineNo">224</span><a name="line.224"></a>
+<span class="sourceLineNo">225</span> // Start the Assignment Thread<a name="line.225"></a>
+<span class="sourceLineNo">226</span> startAssignmentThread();<a name="line.226"></a>
+<span class="sourceLineNo">227</span> }<a name="line.227"></a>
+<span class="sourceLineNo">228</span><a name="line.228"></a>
+<span class="sourceLineNo">229</span> public void stop() {<a name="line.229"></a>
+<span class="sourceLineNo">230</span> if (!running.compareAndSet(true, false)) {<a name="line.230"></a>
+<span class="sourceLineNo">231</span> return;<a name="line.231"></a>
+<span class="sourceLineNo">232</span> }<a name="line.232"></a>
+<span class="sourceLineNo">233</span><a name="line.233"></a>
+<span class="sourceLineNo">234</span> LOG.info("Stopping assignment manager");<a name="line.234"></a>
+<span class="sourceLineNo">235</span><a name="line.235"></a>
+<span class="sourceLineNo">236</span> // The AM is started before the procedure executor,<a name="line.236"></a>
+<span class="sourceLineNo">237</span> // but the actual work will be loaded/submitted only once we have the executor<a name="line.237"></a>
+<span class="sourceLineNo">238</span> final boolean hasProcExecutor = master.getMasterProcedureExecutor() != null;<a name="line.238"></a>
+<span class="sourceLineNo">239</span><a name="line.239"></a>
+<span class="sourceLineNo">240</span> // Remove the RIT chore<a name="line.240"></a>
+<span class="sourceLineNo">241</span> if (hasProcExecutor) {<a name="line.241"></a>
+<span class="sourceLineNo">242</span> master.getMasterProcedureExecutor().removeChore(this.ritChore);<a name="line.242"></a>
+<span class="sourceLineNo">243</span> }<a name="line.243"></a>
+<span class="sourceLineNo">244</span><a name="line.244"></a>
+<span class="sourceLineNo">245</span> // Stop the Assignment Thread<a name="line.245"></a>
+<span class="sourceLineNo">246</span> stopAssignmentThread();<a name="line.246"></a>
+<span class="sourceLineNo">247</span><a name="line.247"></a>
+<span class="sourceLineNo">248</span> // Stop the RegionStateStore<a name="line.248"></a>
+<span class="sourceLineNo">249</span> regionStates.clear();<a name="line.249"></a>
+<span class="sourceLineNo">250</span> regionStateStore.stop();<a name="line.250"></a>
+<span class="sourceLineNo">251</span><a name="line.251"></a>
+<span class="sourceLineNo">252</span> // Unregister Server Listener<a name="line.252"></a>
+<span class="sourceLineNo">253</span> master.getServerManager().unregisterListener(
<TRUNCATED>