http://git-wip-us.apache.org/repos/asf/hbase-site/blob/2b11656f/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionStates.RegionStateStampComparator.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionStates.RegionStateStampComparator.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionStates.RegionStateStampComparator.html index 541beed..1100e95 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionStates.RegionStateStampComparator.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionStates.RegionStateStampComparator.html @@ -42,1015 +42,1038 @@ <span class="sourceLineNo">034</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.34"></a> <span class="sourceLineNo">035</span>import java.util.concurrent.ConcurrentSkipListMap;<a name="line.35"></a> <span class="sourceLineNo">036</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.36"></a> -<span class="sourceLineNo">037</span><a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HConstants;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.ServerName;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.TableName;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.slf4j.Logger;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.slf4j.LoggerFactory;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.51"></a> -<span class="sourceLineNo">052</span><a name="line.52"></a> -<span class="sourceLineNo">053</span>/**<a name="line.53"></a> -<span class="sourceLineNo">054</span> * RegionStates contains a set of Maps that describes the in-memory state of the AM, with<a name="line.54"></a> -<span class="sourceLineNo">055</span> * the regions available in the system, the region in transition, the offline regions and<a name="line.55"></a> -<span class="sourceLineNo">056</span> * the servers holding regions.<a name="line.56"></a> -<span class="sourceLineNo">057</span> */<a name="line.57"></a> -<span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a> -<span class="sourceLineNo">059</span>public class RegionStates {<a name="line.59"></a> -<span class="sourceLineNo">060</span> private static final Logger LOG = LoggerFactory.getLogger(RegionStates.class);<a name="line.60"></a> -<span class="sourceLineNo">061</span><a name="line.61"></a> -<span class="sourceLineNo">062</span> protected static final State[] STATES_EXPECTED_ON_OPEN = new State[] {<a name="line.62"></a> -<span class="sourceLineNo">063</span> State.OPEN, // State may already be OPEN if we died after receiving the OPEN from regionserver<a name="line.63"></a> -<span class="sourceLineNo">064</span> // but before complete finish of AssignProcedure. HBASE-20100.<a name="line.64"></a> -<span class="sourceLineNo">065</span> State.OFFLINE, State.CLOSED, // disable/offline<a name="line.65"></a> -<span class="sourceLineNo">066</span> State.SPLITTING, State.SPLIT, // ServerCrashProcedure<a name="line.66"></a> -<span class="sourceLineNo">067</span> State.OPENING, State.FAILED_OPEN, // already in-progress (retrying)<a name="line.67"></a> -<span class="sourceLineNo">068</span> };<a name="line.68"></a> -<span class="sourceLineNo">069</span><a name="line.69"></a> -<span class="sourceLineNo">070</span> protected static final State[] STATES_EXPECTED_ON_CLOSE = new State[] {<a name="line.70"></a> -<span class="sourceLineNo">071</span> State.SPLITTING, State.SPLIT, State.MERGING, // ServerCrashProcedure<a name="line.71"></a> -<span class="sourceLineNo">072</span> State.OPEN, // enabled/open<a name="line.72"></a> -<span class="sourceLineNo">073</span> State.CLOSING // already in-progress (retrying)<a name="line.73"></a> -<span class="sourceLineNo">074</span> };<a name="line.74"></a> -<span class="sourceLineNo">075</span><a name="line.75"></a> -<span class="sourceLineNo">076</span> private static class AssignmentProcedureEvent extends ProcedureEvent<RegionInfo> {<a name="line.76"></a> -<span class="sourceLineNo">077</span> public AssignmentProcedureEvent(final RegionInfo regionInfo) {<a name="line.77"></a> -<span class="sourceLineNo">078</span> super(regionInfo);<a name="line.78"></a> -<span class="sourceLineNo">079</span> }<a name="line.79"></a> -<span class="sourceLineNo">080</span> }<a name="line.80"></a> -<span class="sourceLineNo">081</span><a name="line.81"></a> -<span class="sourceLineNo">082</span> private static class ServerReportEvent extends ProcedureEvent<ServerName> {<a name="line.82"></a> -<span class="sourceLineNo">083</span> public ServerReportEvent(final ServerName serverName) {<a name="line.83"></a> -<span class="sourceLineNo">084</span> super(serverName);<a name="line.84"></a> -<span class="sourceLineNo">085</span> }<a name="line.85"></a> -<span class="sourceLineNo">086</span> }<a name="line.86"></a> -<span class="sourceLineNo">087</span><a name="line.87"></a> -<span class="sourceLineNo">088</span> /**<a name="line.88"></a> -<span class="sourceLineNo">089</span> * Current Region State.<a name="line.89"></a> -<span class="sourceLineNo">090</span> * In-memory only. Not persisted.<a name="line.90"></a> -<span class="sourceLineNo">091</span> */<a name="line.91"></a> -<span class="sourceLineNo">092</span> // Mutable/Immutable? Changes have to be synchronized or not?<a name="line.92"></a> -<span class="sourceLineNo">093</span> // Data members are volatile which seems to say multi-threaded access is fine.<a name="line.93"></a> -<span class="sourceLineNo">094</span> // In the below we do check and set but the check state could change before<a name="line.94"></a> -<span class="sourceLineNo">095</span> // we do the set because no synchronization....which seems dodgy. Clear up<a name="line.95"></a> -<span class="sourceLineNo">096</span> // understanding here... how many threads accessing? Do locks make it so one<a name="line.96"></a> -<span class="sourceLineNo">097</span> // thread at a time working on a single Region's RegionStateNode? Lets presume<a name="line.97"></a> -<span class="sourceLineNo">098</span> // so for now. Odd is that elsewhere in this RegionStates, we synchronize on<a name="line.98"></a> -<span class="sourceLineNo">099</span> // the RegionStateNode instance. TODO.<a name="line.99"></a> -<span class="sourceLineNo">100</span> public static class RegionStateNode implements Comparable<RegionStateNode> {<a name="line.100"></a> -<span class="sourceLineNo">101</span> private final RegionInfo regionInfo;<a name="line.101"></a> -<span class="sourceLineNo">102</span> private final ProcedureEvent<?> event;<a name="line.102"></a> -<span class="sourceLineNo">103</span><a name="line.103"></a> -<span class="sourceLineNo">104</span> private volatile RegionTransitionProcedure procedure = null;<a name="line.104"></a> -<span class="sourceLineNo">105</span> private volatile ServerName regionLocation = null;<a name="line.105"></a> -<span class="sourceLineNo">106</span> private volatile ServerName lastHost = null;<a name="line.106"></a> -<span class="sourceLineNo">107</span> /**<a name="line.107"></a> -<span class="sourceLineNo">108</span> * A Region-in-Transition (RIT) moves through states.<a name="line.108"></a> -<span class="sourceLineNo">109</span> * See {@link State} for complete list. A Region that<a name="line.109"></a> -<span class="sourceLineNo">110</span> * is opened moves from OFFLINE => OPENING => OPENED.<a name="line.110"></a> -<span class="sourceLineNo">111</span> */<a name="line.111"></a> -<span class="sourceLineNo">112</span> private volatile State state = State.OFFLINE;<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> /**<a name="line.114"></a> -<span class="sourceLineNo">115</span> * Updated whenever a call to {@link #setRegionLocation(ServerName)}<a name="line.115"></a> -<span class="sourceLineNo">116</span> * or {@link #setState(State, State...)}.<a name="line.116"></a> -<span class="sourceLineNo">117</span> */<a name="line.117"></a> -<span class="sourceLineNo">118</span> private volatile long lastUpdate = 0;<a name="line.118"></a> -<span class="sourceLineNo">119</span><a name="line.119"></a> -<span class="sourceLineNo">120</span> private volatile long openSeqNum = HConstants.NO_SEQNUM;<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> public RegionStateNode(final RegionInfo regionInfo) {<a name="line.122"></a> -<span class="sourceLineNo">123</span> this.regionInfo = regionInfo;<a name="line.123"></a> -<span class="sourceLineNo">124</span> this.event = new AssignmentProcedureEvent(regionInfo);<a name="line.124"></a> -<span class="sourceLineNo">125</span> }<a name="line.125"></a> -<span class="sourceLineNo">126</span><a name="line.126"></a> -<span class="sourceLineNo">127</span> /**<a name="line.127"></a> -<span class="sourceLineNo">128</span> * @param update new region state this node should be assigned.<a name="line.128"></a> -<span class="sourceLineNo">129</span> * @param expected current state should be in this given list of expected states<a name="line.129"></a> -<span class="sourceLineNo">130</span> * @return true, if current state is in expected list; otherwise false.<a name="line.130"></a> -<span class="sourceLineNo">131</span> */<a name="line.131"></a> -<span class="sourceLineNo">132</span> public boolean setState(final State update, final State... expected) {<a name="line.132"></a> -<span class="sourceLineNo">133</span> if (!isInState(expected)) {<a name="line.133"></a> -<span class="sourceLineNo">134</span> return false;<a name="line.134"></a> -<span class="sourceLineNo">135</span> }<a name="line.135"></a> -<span class="sourceLineNo">136</span> this.state = update;<a name="line.136"></a> -<span class="sourceLineNo">137</span> this.lastUpdate = EnvironmentEdgeManager.currentTime();<a name="line.137"></a> -<span class="sourceLineNo">138</span> return true;<a name="line.138"></a> -<span class="sourceLineNo">139</span> }<a name="line.139"></a> -<span class="sourceLineNo">140</span><a name="line.140"></a> -<span class="sourceLineNo">141</span> /**<a name="line.141"></a> -<span class="sourceLineNo">142</span> * Put region into OFFLINE mode (set state and clear location).<a name="line.142"></a> -<span class="sourceLineNo">143</span> * @return Last recorded server deploy<a name="line.143"></a> -<span class="sourceLineNo">144</span> */<a name="line.144"></a> -<span class="sourceLineNo">145</span> public ServerName offline() {<a name="line.145"></a> -<span class="sourceLineNo">146</span> setState(State.OFFLINE);<a name="line.146"></a> -<span class="sourceLineNo">147</span> return setRegionLocation(null);<a name="line.147"></a> -<span class="sourceLineNo">148</span> }<a name="line.148"></a> -<span class="sourceLineNo">149</span><a name="line.149"></a> -<span class="sourceLineNo">150</span> /**<a name="line.150"></a> -<span class="sourceLineNo">151</span> * Set new {@link State} but only if currently in <code>expected</code> State<a name="line.151"></a> -<span class="sourceLineNo">152</span> * (if not, throw {@link UnexpectedStateException}.<a name="line.152"></a> -<span class="sourceLineNo">153</span> */<a name="line.153"></a> -<span class="sourceLineNo">154</span> public void transitionState(final State update, final State... expected)<a name="line.154"></a> -<span class="sourceLineNo">155</span> throws UnexpectedStateException {<a name="line.155"></a> -<span class="sourceLineNo">156</span> if (!setState(update, expected)) {<a name="line.156"></a> -<span class="sourceLineNo">157</span> throw new UnexpectedStateException("Expected " + Arrays.toString(expected) +<a name="line.157"></a> -<span class="sourceLineNo">158</span> " so could move to " + update + " but current state=" + getState());<a name="line.158"></a> -<span class="sourceLineNo">159</span> }<a name="line.159"></a> -<span class="sourceLineNo">160</span> }<a name="line.160"></a> -<span class="sourceLineNo">161</span><a name="line.161"></a> -<span class="sourceLineNo">162</span> public boolean isInState(final State... expected) {<a name="line.162"></a> -<span class="sourceLineNo">163</span> if (expected != null && expected.length > 0) {<a name="line.163"></a> -<span class="sourceLineNo">164</span> boolean expectedState = false;<a name="line.164"></a> -<span class="sourceLineNo">165</span> for (int i = 0; i < expected.length; ++i) {<a name="line.165"></a> -<span class="sourceLineNo">166</span> expectedState |= (getState() == expected[i]);<a name="line.166"></a> -<span class="sourceLineNo">167</span> }<a name="line.167"></a> -<span class="sourceLineNo">168</span> return expectedState;<a name="line.168"></a> -<span class="sourceLineNo">169</span> }<a name="line.169"></a> -<span class="sourceLineNo">170</span> return true;<a name="line.170"></a> -<span class="sourceLineNo">171</span> }<a name="line.171"></a> -<span class="sourceLineNo">172</span><a name="line.172"></a> -<span class="sourceLineNo">173</span> public boolean isStuck() {<a name="line.173"></a> -<span class="sourceLineNo">174</span> return isInState(State.FAILED_OPEN) && getProcedure() != null;<a name="line.174"></a> -<span class="sourceLineNo">175</span> }<a name="line.175"></a> -<span class="sourceLineNo">176</span><a name="line.176"></a> -<span class="sourceLineNo">177</span> public boolean isInTransition() {<a name="line.177"></a> -<span class="sourceLineNo">178</span> return getProcedure() != null;<a name="line.178"></a> -<span class="sourceLineNo">179</span> }<a name="line.179"></a> -<span class="sourceLineNo">180</span><a name="line.180"></a> -<span class="sourceLineNo">181</span> public long getLastUpdate() {<a name="line.181"></a> -<span class="sourceLineNo">182</span> return procedure != null ? procedure.getLastUpdate() : lastUpdate;<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 void setLastHost(final ServerName serverName) {<a name="line.185"></a> -<span class="sourceLineNo">186</span> this.lastHost = serverName;<a name="line.186"></a> -<span class="sourceLineNo">187</span> }<a name="line.187"></a> -<span class="sourceLineNo">188</span><a name="line.188"></a> -<span class="sourceLineNo">189</span> public void setOpenSeqNum(final long seqId) {<a name="line.189"></a> -<span class="sourceLineNo">190</span> this.openSeqNum = seqId;<a name="line.190"></a> -<span class="sourceLineNo">191</span> }<a name="line.191"></a> -<span class="sourceLineNo">192</span><a name="line.192"></a> -<span class="sourceLineNo">193</span> public ServerName setRegionLocation(final ServerName serverName) {<a name="line.193"></a> -<span class="sourceLineNo">194</span> ServerName lastRegionLocation = this.regionLocation;<a name="line.194"></a> -<span class="sourceLineNo">195</span> if (LOG.isTraceEnabled() && serverName == null) {<a name="line.195"></a> -<span class="sourceLineNo">196</span> LOG.trace("Tracking when we are set to null " + this, new Throwable("TRACE"));<a name="line.196"></a> -<span class="sourceLineNo">197</span> }<a name="line.197"></a> -<span class="sourceLineNo">198</span> this.regionLocation = serverName;<a name="line.198"></a> -<span class="sourceLineNo">199</span> this.lastUpdate = EnvironmentEdgeManager.currentTime();<a name="line.199"></a> -<span class="sourceLineNo">200</span> return lastRegionLocation;<a name="line.200"></a> -<span class="sourceLineNo">201</span> }<a name="line.201"></a> -<span class="sourceLineNo">202</span><a name="line.202"></a> -<span class="sourceLineNo">203</span> public boolean setProcedure(final RegionTransitionProcedure proc) {<a name="line.203"></a> -<span class="sourceLineNo">204</span> if (this.procedure != null && this.procedure != proc) {<a name="line.204"></a> -<span class="sourceLineNo">205</span> return false;<a name="line.205"></a> -<span class="sourceLineNo">206</span> }<a name="line.206"></a> -<span class="sourceLineNo">207</span> this.procedure = proc;<a name="line.207"></a> -<span class="sourceLineNo">208</span> return true;<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 boolean unsetProcedure(final RegionTransitionProcedure proc) {<a name="line.211"></a> -<span class="sourceLineNo">212</span> if (this.procedure != null && this.procedure != proc) {<a name="line.212"></a> -<span class="sourceLineNo">213</span> return false;<a name="line.213"></a> -<span class="sourceLineNo">214</span> }<a name="line.214"></a> -<span class="sourceLineNo">215</span> this.procedure = null;<a name="line.215"></a> -<span class="sourceLineNo">216</span> return true;<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span><a name="line.218"></a> -<span class="sourceLineNo">219</span> public RegionTransitionProcedure getProcedure() {<a name="line.219"></a> -<span class="sourceLineNo">220</span> return procedure;<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> public ProcedureEvent<?> getProcedureEvent() {<a name="line.223"></a> -<span class="sourceLineNo">224</span> return event;<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> public RegionInfo getRegionInfo() {<a name="line.227"></a> -<span class="sourceLineNo">228</span> return regionInfo;<a name="line.228"></a> -<span class="sourceLineNo">229</span> }<a name="line.229"></a> -<span class="sourceLineNo">230</span><a name="line.230"></a> -<span class="sourceLineNo">231</span> public TableName getTable() {<a name="line.231"></a> -<span class="sourceLineNo">232</span> return getRegionInfo().getTable();<a name="line.232"></a> -<span class="sourceLineNo">233</span> }<a name="line.233"></a> -<span class="sourceLineNo">234</span><a name="line.234"></a> -<span class="sourceLineNo">235</span> public boolean isSystemTable() {<a name="line.235"></a> -<span class="sourceLineNo">236</span> return getTable().isSystemTable();<a name="line.236"></a> -<span class="sourceLineNo">237</span> }<a name="line.237"></a> -<span class="sourceLineNo">238</span><a name="line.238"></a> -<span class="sourceLineNo">239</span> public ServerName getLastHost() {<a name="line.239"></a> -<span class="sourceLineNo">240</span> return lastHost;<a name="line.240"></a> -<span class="sourceLineNo">241</span> }<a name="line.241"></a> -<span class="sourceLineNo">242</span><a name="line.242"></a> -<span class="sourceLineNo">243</span> public ServerName getRegionLocation() {<a name="line.243"></a> -<span class="sourceLineNo">244</span> return regionLocation;<a name="line.244"></a> -<span class="sourceLineNo">245</span> }<a name="line.245"></a> -<span class="sourceLineNo">246</span><a name="line.246"></a> -<span class="sourceLineNo">247</span> public State getState() {<a name="line.247"></a> -<span class="sourceLineNo">248</span> return state;<a name="line.248"></a> -<span class="sourceLineNo">249</span> }<a name="line.249"></a> -<span class="sourceLineNo">250</span><a name="line.250"></a> -<span class="sourceLineNo">251</span> public long getOpenSeqNum() {<a name="line.251"></a> -<span class="sourceLineNo">252</span> return openSeqNum;<a name="line.252"></a> -<span class="sourceLineNo">253</span> }<a name="line.253"></a> -<span class="sourceLineNo">254</span><a name="line.254"></a> -<span class="sourceLineNo">255</span> public int getFormatVersion() {<a name="line.255"></a> -<span class="sourceLineNo">256</span> // we don't have any format for now<a name="line.256"></a> -<span class="sourceLineNo">257</span> // it should probably be in regionInfo.getFormatVersion()<a name="line.257"></a> -<span class="sourceLineNo">258</span> return 0;<a name="line.258"></a> -<span class="sourceLineNo">259</span> }<a name="line.259"></a> -<span class="sourceLineNo">260</span><a name="line.260"></a> -<span class="sourceLineNo">261</span> public RegionState toRegionState() {<a name="line.261"></a> -<span class="sourceLineNo">262</span> return new RegionState(getRegionInfo(), getState(), getLastUpdate(), getRegionLocation());<a name="line.262"></a> -<span class="sourceLineNo">263</span> }<a name="line.263"></a> -<span class="sourceLineNo">264</span><a name="line.264"></a> -<span class="sourceLineNo">265</span> @Override<a name="line.265"></a> -<span class="sourceLineNo">266</span> public int compareTo(final RegionStateNode other) {<a name="line.266"></a> -<span class="sourceLineNo">267</span> // NOTE: RegionInfo sort by table first, so we are relying on that.<a name="line.267"></a> -<span class="sourceLineNo">268</span> // we have a TestRegionState#testOrderedByTable() that check for that.<a name="line.268"></a> -<span class="sourceLineNo">269</span> return RegionInfo.COMPARATOR.compare(getRegionInfo(), other.getRegionInfo());<a name="line.269"></a> -<span class="sourceLineNo">270</span> }<a name="line.270"></a> -<span class="sourceLineNo">271</span><a name="line.271"></a> -<span class="sourceLineNo">272</span> @Override<a name="line.272"></a> -<span class="sourceLineNo">273</span> public int hashCode() {<a name="line.273"></a> -<span class="sourceLineNo">274</span> return getRegionInfo().hashCode();<a name="line.274"></a> -<span class="sourceLineNo">275</span> }<a name="line.275"></a> -<span class="sourceLineNo">276</span><a name="line.276"></a> -<span class="sourceLineNo">277</span> @Override<a name="line.277"></a> -<span class="sourceLineNo">278</span> public boolean equals(final Object other) {<a name="line.278"></a> -<span class="sourceLineNo">279</span> if (this == other) return true;<a name="line.279"></a> -<span class="sourceLineNo">280</span> if (!(other instanceof RegionStateNode)) return false;<a name="line.280"></a> -<span class="sourceLineNo">281</span> return compareTo((RegionStateNode)other) == 0;<a name="line.281"></a> -<span class="sourceLineNo">282</span> }<a name="line.282"></a> -<span class="sourceLineNo">283</span><a name="line.283"></a> -<span class="sourceLineNo">284</span> @Override<a name="line.284"></a> -<span class="sourceLineNo">285</span> public String toString() {<a name="line.285"></a> -<span class="sourceLineNo">286</span> return toDescriptiveString();<a name="line.286"></a> -<span class="sourceLineNo">287</span> }<a name="line.287"></a> -<span class="sourceLineNo">288</span><a name="line.288"></a> -<span class="sourceLineNo">289</span> public String toShortString() {<a name="line.289"></a> -<span class="sourceLineNo">290</span> // rit= is the current Region-In-Transition State -- see State enum.<a name="line.290"></a> -<span class="sourceLineNo">291</span> return String.format("rit=%s, location=%s", getState(), getRegionLocation());<a name="line.291"></a> -<span 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Available.<a name="line.316"></a> -<span class="sourceLineNo">317</span> */<a name="line.317"></a> -<span class="sourceLineNo">318</span> ONLINE,<a name="line.318"></a> -<span class="sourceLineNo">319</span><a name="line.319"></a> -<span class="sourceLineNo">320</span> /**<a name="line.320"></a> -<span class="sourceLineNo">321</span> * Only server which carries meta can have this state. We will split wal for meta and then<a name="line.321"></a> -<span class="sourceLineNo">322</span> * assign meta first before splitting other wals.<a name="line.322"></a> -<span class="sourceLineNo">323</span> */<a name="line.323"></a> -<span class="sourceLineNo">324</span> SPLITTING_META,<a name="line.324"></a> -<span class="sourceLineNo">325</span><a name="line.325"></a> -<span class="sourceLineNo">326</span> /**<a name="line.326"></a> -<span class="sourceLineNo">327</span> * Indicate that the meta splitting is done. 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equals(final Object other) {<a name="line.423"></a> -<span class="sourceLineNo">424</span> if (this == other) return true;<a name="line.424"></a> -<span class="sourceLineNo">425</span> if (!(other instanceof ServerStateNode)) return false;<a name="line.425"></a> -<span class="sourceLineNo">426</span> return compareTo((ServerStateNode)other) == 0;<a name="line.426"></a> -<span class="sourceLineNo">427</span> }<a name="line.427"></a> -<span class="sourceLineNo">428</span><a name="line.428"></a> -<span class="sourceLineNo">429</span> @Override<a name="line.429"></a> -<span class="sourceLineNo">430</span> public String toString() {<a name="line.430"></a> -<span class="sourceLineNo">431</span> return String.format("ServerStateNode(%s)", getServerName());<a name="line.431"></a> -<span class="sourceLineNo">432</span> }<a name="line.432"></a> -<span class="sourceLineNo">433</span> }<a name="line.433"></a> -<span class="sourceLineNo">434</span><a name="line.434"></a> -<span class="sourceLineNo">435</span> public final static RegionStateStampComparator REGION_STATE_STAMP_COMPARATOR =<a name="line.435"></a> -<span class="sourceLineNo">436</span> new RegionStateStampComparator();<a name="line.436"></a> -<span class="sourceLineNo">437</span><a name="line.437"></a> -<span class="sourceLineNo">438</span> // TODO: Replace the ConcurrentSkipListMaps<a name="line.438"></a> -<span class="sourceLineNo">439</span> /**<a name="line.439"></a> -<span class="sourceLineNo">440</span> * RegionName -- i.e. RegionInfo.getRegionName() -- as bytes to {@link RegionStateNode}<a name="line.440"></a> -<span class="sourceLineNo">441</span> */<a name="line.441"></a> -<span class="sourceLineNo">442</span> private final ConcurrentSkipListMap<byte[], RegionStateNode> regionsMap =<a name="line.442"></a> -<span class="sourceLineNo">443</span> new ConcurrentSkipListMap<byte[], RegionStateNode>(Bytes.BYTES_COMPARATOR);<a name="line.443"></a> -<span class="sourceLineNo">444</span><a 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byte[] regionName) {<a name="line.490"></a> -<span class="sourceLineNo">491</span> return regionsMap.get(regionName);<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> protected RegionStateNode getRegionStateNode(final RegionInfo regionInfo) {<a name="line.494"></a> -<span class="sourceLineNo">495</span> return getRegionStateNodeFromName(regionInfo.getRegionName());<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> public void deleteRegion(final RegionInfo regionInfo) {<a name="line.498"></a> -<span class="sourceLineNo">499</span> regionsMap.remove(regionInfo.getRegionName());<a name="line.499"></a> -<span class="sourceLineNo">500</span> // Remove from the offline regions map too if there.<a name="line.500"></a> 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class="sourceLineNo">520</span> regions.add(node.toRegionState());<a name="line.520"></a> -<span class="sourceLineNo">521</span> }<a name="line.521"></a> -<span class="sourceLineNo">522</span> return regions;<a name="line.522"></a> -<span class="sourceLineNo">523</span> }<a name="line.523"></a> -<span class="sourceLineNo">524</span><a name="line.524"></a> -<span class="sourceLineNo">525</span> ArrayList<RegionInfo> getTableRegionsInfo(final TableName tableName) {<a name="line.525"></a> -<span class="sourceLineNo">526</span> final ArrayList<RegionInfo> regions = new ArrayList<RegionInfo>();<a name="line.526"></a> -<span class="sourceLineNo">527</span> for (RegionStateNode node: regionsMap.tailMap(tableName.getName()).values()) {<a name="line.527"></a> -<span class="sourceLineNo">528</span> if (!node.getTable().equals(tableName)) break;<a name="line.528"></a> -<span class="sourceLineNo">529</span> regions.add(node.getRegionInfo());<a name="line.529"></a> -<span class="sourceLineNo">530</span> }<a name="line.530"></a> -<span class="sourceLineNo">531</span> return regions;<a name="line.531"></a> -<span class="sourceLineNo">532</span> }<a name="line.532"></a> -<span class="sourceLineNo">533</span><a name="line.533"></a> -<span class="sourceLineNo">534</span> Collection<RegionStateNode> getRegionStateNodes() {<a name="line.534"></a> -<span class="sourceLineNo">535</span> return regionsMap.values();<a name="line.535"></a> -<span class="sourceLineNo">536</span> }<a name="line.536"></a> -<span class="sourceLineNo">537</span><a name="line.537"></a> -<span class="sourceLineNo">538</span> public ArrayList<RegionState> getRegionStates() {<a name="line.538"></a> -<span class="sourceLineNo">539</span> final ArrayList<RegionState> regions = new ArrayList<RegionState>(regionsMap.size());<a name="line.539"></a> -<span class="sourceLineNo">540</span> for (RegionStateNode node: regionsMap.values()) {<a name="line.540"></a> -<span class="sourceLineNo">541</span> regions.add(node.toRegionState());<a name="line.541"></a> -<span class="sourceLineNo">542</span> }<a name="line.542"></a> -<span class="sourceLineNo">543</span> return regions;<a name="line.543"></a> -<span class="sourceLineNo">544</span> }<a name="line.544"></a> -<span class="sourceLineNo">545</span><a name="line.545"></a> -<span class="sourceLineNo">546</span> // ==========================================================================<a name="line.546"></a> -<span class="sourceLineNo">547</span> // RegionState helpers<a name="line.547"></a> -<span class="sourceLineNo">548</span> // ==========================================================================<a name="line.548"></a> -<span class="sourceLineNo">549</span> public RegionState getRegionState(final RegionInfo regionInfo) {<a name="line.549"></a> -<span class="sourceLineNo">550</span> RegionStateNode regionStateNode = getRegionStateNode(regionInfo);<a name="line.550"></a> -<span class="sourceLineNo">551</span> return regionStateNode == null ? null : regionStateNode.toRegionState();<a name="line.551"></a> -<span class="sourceLineNo">552</span> }<a name="line.552"></a> -<span class="sourceLineNo">553</span><a name="line.553"></a> -<span class="sourceLineNo">554</span> public RegionState getRegionState(final String encodedRegionName) {<a name="line.554"></a> -<span class="sourceLineNo">555</span> // TODO: Need a map <encodedName, ...> but it is just dispatch merge...<a name="line.555"></a> -<span class="sourceLineNo">556</span> for (RegionStateNode node: regionsMap.values()) {<a name="line.556"></a> -<span class="sourceLineNo">557</span> if (node.getRegionInfo().getEncodedName().equals(encodedRegionName)) {<a name="line.557"></a> -<span class="sourceLineNo">558</span> return node.toRegionState();<a name="line.558"></a> -<span class="sourceLineNo">559</span> }<a name="line.559"></a> -<span class="sourceLineNo">560</span> }<a name="line.560"></a> -<span class="sourceLineNo">561</span> return null;<a name="line.561"></a> -<span class="sourceLineNo">562</span> }<a name="line.562"></a> -<span class="sourceLineNo">563</span><a name="line.563"></a> -<span class="sourceLineNo">564</span> // ============================================================================================<a name="line.564"></a> -<span class="sourceLineNo">565</span> // TODO: helpers<a name="line.565"></a> -<span class="sourceLineNo">566</span> // ============================================================================================<a name="line.566"></a> -<span class="sourceLineNo">567</span> public boolean hasTableRegionStates(final TableName tableName) {<a name="line.567"></a> -<span class="sourceLineNo">568</span> // TODO<a name="line.568"></a> -<span class="sourceLineNo">569</span> return !getTableRegionStates(tableName).isEmpty();<a name="line.569"></a> -<span class="sourceLineNo">570</span> }<a name="line.570"></a> -<span class="sourceLineNo">571</span><a name="line.571"></a> -<span class="sourceLineNo">572</span> /**<a name="line.572"></a> -<span class="sourceLineNo">573</span> * @return Return online regions of table; does not include OFFLINE or SPLITTING regions.<a name="line.573"></a> -<span class="sourceLineNo">574</span> */<a name="line.574"></a> -<span class="sourceLineNo">575</span> public List<RegionInfo> getRegionsOfTable(final TableName table) {<a name="line.575"></a> -<span class="sourceLineNo">576</span> return getRegionsOfTable(table, false);<a name="line.576"></a> -<span class="sourceLineNo">577</span> }<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">580</span> * @return Return the regions of the table; does not include OFFLINE unless you set<a name="line.580"></a> -<span class="sourceLineNo">581</span> * <code>offline</code> to true. Does not include regions that are in the<a name="line.581"></a> -<span class="sourceLineNo">582</span> * {@link State#SPLIT} state.<a name="line.582"></a> -<span class="sourceLineNo">583</span> */<a name="line.583"></a> -<span class="sourceLineNo">584</span> public List<RegionInfo> getRegionsOfTable(final TableName table, final boolean offline) {<a name="line.584"></a> -<span class="sourceLineNo">585</span> final ArrayList<RegionStateNode> nodes = getTableRegionStateNodes(table);<a name="line.585"></a> -<span class="sourceLineNo">586</span> final ArrayList<RegionInfo> hris = new ArrayList<RegionInfo>(nodes.size());<a name="line.586"></a> -<span class="sourceLineNo">587</span> for (RegionStateNode node: nodes) {<a name="line.587"></a> -<span class="sourceLineNo">588</span> if (include(node, offline)) hris.add(node.getRegionInfo());<a name="line.588"></a> -<span class="sourceLineNo">589</span> }<a name="line.589"></a> -<span class="sourceLineNo">590</span> return hris;<a name="line.590"></a> -<span class="sourceLineNo">591</span> }<a name="line.591"></a> -<span class="sourceLineNo">592</span><a name="line.592"></a> -<span class="sourceLineNo">593</span> /**<a name="line.593"></a> -<span class="sourceLineNo">594</span> * Utility. Whether to include region in list of regions. Default is to<a name="line.594"></a> -<span class="sourceLineNo">595</span> * weed out split and offline regions.<a name="line.595"></a> -<span class="sourceLineNo">596</span> * @return True if we should include the <code>node</code> (do not include<a name="line.596"></a> -<span class="sourceLineNo">597</span> * if split or offline unless <code>offline</code> is set to true.<a name="line.597"></a> -<span class="sourceLineNo">598</span> */<a name="line.598"></a> -<span class="sourceLineNo">599</span> boolean include(final RegionStateNode node, final boolean offline) {<a name="line.599"></a> -<span class="sourceLineNo">600</span> if (LOG.isTraceEnabled()) {<a name="line.600"></a> -<span class="sourceLineNo">601</span> LOG.trace("WORKING ON " + node + " " + node.getRegionInfo());<a name="line.601"></a> -<span class="sourceLineNo">602</span> }<a name="line.602"></a> -<span class="sourceLineNo">603</span> if (node.isInState(State.SPLIT)) return false;<a name="line.603"></a> -<span class="sourceLineNo">604</span> if (node.isInState(State.OFFLINE) && !offline) return false;<a name="line.604"></a> -<span class="sourceLineNo">605</span> final RegionInfo hri = node.getRegionInfo();<a name="line.605"></a> -<span class="sourceLineNo">606</span> return (!hri.isOffline() && !hri.isSplit()) ||<a name="line.606"></a> -<span class="sourceLineNo">607</span> ((hri.isOffline() || hri.isSplit()) && offline);<a name="line.607"></a> -<span class="sourceLineNo">608</span> }<a name="line.608"></a> -<span class="sourceLineNo">609</span><a name="line.609"></a> -<span class="sourceLineNo">610</span> /**<a name="line.610"></a> -<span class="sourceLineNo">611</span> * Returns the set of regions hosted by the specified server<a name="line.611"></a> -<span class="sourceLineNo">612</span> * @param serverName the server we are interested in<a name="line.612"></a> -<span class="sourceLineNo">613</span> * @return set of RegionInfo hosted by the specified server<a name="line.613"></a> -<span class="sourceLineNo">614</span> */<a name="line.614"></a> -<span class="sourceLineNo">615</span> public List<RegionInfo> getServerRegionInfoSet(final ServerName serverName) {<a name="line.615"></a> -<span class="sourceLineNo">616</span> final ServerStateNode serverInfo = getServerNode(serverName);<a name="line.616"></a> -<span class="sourceLineNo">617</span> if (serverInfo == null) return Collections.emptyList();<a name="line.617"></a> -<span class="sourceLineNo">618</span><a name="line.618"></a> -<span class="sourceLineNo">619</span> synchronized (serverInfo) {<a name="line.619"></a> -<span class="sourceLineNo">620</span> return serverInfo.getRegionInfoList();<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><a name="line.623"></a> -<span class="sourceLineNo">624</span> // ============================================================================================<a name="line.624"></a> -<span class="sourceLineNo">625</span> // Split helpers<a name="line.625"></a> -<span class="sourceLineNo">626</span> // These methods will only be called in ServerCrashProcedure, and at the end of SCP we will remove<a name="line.626"></a> -<span class="sourceLineNo">627</span> // the ServerStateNode by calling removeServer.<a name="line.627"></a> -<span class="sourceLineNo">628</span> // ============================================================================================<a name="line.628"></a> -<span class="sourceLineNo">629</span><a name="line.629"></a> -<span class="sourceLineNo">630</span> private void setServerState(ServerName serverName, ServerState state) {<a name="line.630"></a> -<span class="sourceLineNo">631</span> ServerStateNode serverNode = getOrCreateServer(serverName);<a name="line.631"></a> -<span class="sourceLineNo">632</span> synchronized (serverNode) {<a name="line.632"></a> -<span class="sourceLineNo">633</span> serverNode.setState(state);<a name="line.633"></a> -<span class="sourceLineNo">634</span> }<a name="line.634"></a> -<span class="sourceLineNo">635</span> }<a name="line.635"></a> -<span class="sourceLineNo">636</span><a name="line.636"></a> -<span class="sourceLineNo">637</span> /**<a name="line.637"></a> -<span class="sourceLineNo">638</span> * Call this when we start meta log splitting a crashed Server.<a name="line.638"></a> -<span class="sourceLineNo">639</span> * @see #metaLogSplit(ServerName)<a name="line.639"></a> -<span class="sourceLineNo">640</span> */<a name="line.640"></a> -<span class="sourceLineNo">641</span> public void metaLogSplitting(ServerName serverName) {<a name="line.641"></a> -<span class="sourceLineNo">642</span> setServerState(serverName, ServerState.SPLITTING_META);<a name="line.642"></a> -<span class="sourceLineNo">643</span> }<a name="line.643"></a> -<span class="sourceLineNo">644</span><a name="line.644"></a> -<span class="sourceLineNo">645</span> /**<a name="line.645"></a> -<span class="sourceLineNo">646</span> * Called after we've split the meta logs on a crashed Server.<a name="line.646"></a> -<span class="sourceLineNo">647</span> * @see #metaLogSplitting(ServerName)<a name="line.647"></a> -<span class="sourceLineNo">648</span> */<a name="line.648"></a> -<span class="sourceLineNo">649</span> public void metaLogSplit(ServerName serverName) {<a name="line.649"></a> -<span class="sourceLineNo">650</span> setServerState(serverName, ServerState.SPLITTING_META_DONE);<a name="line.650"></a> -<span class="sourceLineNo">651</span> }<a name="line.651"></a> +<span class="sourceLineNo">037</span>import java.util.function.Predicate;<a name="line.37"></a> +<span class="sourceLineNo">038</span><a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HConstants;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.ServerName;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.TableName;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.slf4j.Logger;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.slf4j.LoggerFactory;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.52"></a> +<span class="sourceLineNo">053</span><a name="line.53"></a> +<span class="sourceLineNo">054</span>/**<a name="line.54"></a> +<span class="sourceLineNo">055</span> * RegionStates contains a set of Maps that describes the in-memory state of the AM, with<a name="line.55"></a> +<span class="sourceLineNo">056</span> * the regions available in the system, the region in transition, the offline regions and<a name="line.56"></a> +<span class="sourceLineNo">057</span> * the servers holding regions.<a name="line.57"></a> +<span class="sourceLineNo">058</span> */<a name="line.58"></a> +<span class="sourceLineNo">059</span>@InterfaceAudience.Private<a name="line.59"></a> +<span class="sourceLineNo">060</span>public class RegionStates {<a name="line.60"></a> +<span class="sourceLineNo">061</span> private static final Logger LOG = LoggerFactory.getLogger(RegionStates.class);<a name="line.61"></a> +<span class="sourceLineNo">062</span><a name="line.62"></a> +<span class="sourceLineNo">063</span> protected static final State[] STATES_EXPECTED_ON_OPEN = new State[] {<a name="line.63"></a> +<span class="sourceLineNo">064</span> State.OPEN, // State may already be OPEN if we died after receiving the OPEN from regionserver<a name="line.64"></a> +<span class="sourceLineNo">065</span> // but before complete finish of AssignProcedure. HBASE-20100.<a name="line.65"></a> +<span class="sourceLineNo">066</span> State.OFFLINE, State.CLOSED, // disable/offline<a name="line.66"></a> +<span class="sourceLineNo">067</span> State.SPLITTING, State.SPLIT, // ServerCrashProcedure<a name="line.67"></a> +<span class="sourceLineNo">068</span> State.OPENING, State.FAILED_OPEN, // already in-progress (retrying)<a name="line.68"></a> +<span class="sourceLineNo">069</span> };<a name="line.69"></a> +<span class="sourceLineNo">070</span><a name="line.70"></a> +<span class="sourceLineNo">071</span> protected static final State[] STATES_EXPECTED_ON_CLOSE = new State[] {<a name="line.71"></a> +<span class="sourceLineNo">072</span> State.SPLITTING, State.SPLIT, State.MERGING, // ServerCrashProcedure<a name="line.72"></a> +<span class="sourceLineNo">073</span> State.OPEN, // enabled/open<a name="line.73"></a> +<span class="sourceLineNo">074</span> State.CLOSING // already in-progress (retrying)<a name="line.74"></a> +<span class="sourceLineNo">075</span> };<a name="line.75"></a> +<span class="sourceLineNo">076</span><a name="line.76"></a> +<span class="sourceLineNo">077</span> private static class AssignmentProcedureEvent extends ProcedureEvent<RegionInfo> {<a name="line.77"></a> +<span class="sourceLineNo">078</span> public AssignmentProcedureEvent(final RegionInfo regionInfo) {<a name="line.78"></a> +<span class="sourceLineNo">079</span> super(regionInfo);<a name="line.79"></a> +<span class="sourceLineNo">080</span> }<a name="line.80"></a> +<span class="sourceLineNo">081</span> }<a name="line.81"></a> +<span class="sourceLineNo">082</span><a name="line.82"></a> +<span class="sourceLineNo">083</span> private static class ServerReportEvent extends ProcedureEvent<ServerName> {<a name="line.83"></a> +<span class="sourceLineNo">084</span> public ServerReportEvent(final ServerName serverName) {<a name="line.84"></a> +<span class="sourceLineNo">085</span> super(serverName);<a name="line.85"></a> +<span class="sourceLineNo">086</span> }<a name="line.86"></a> +<span class="sourceLineNo">087</span> }<a name="line.87"></a> +<span class="sourceLineNo">088</span><a name="line.88"></a> +<span class="sourceLineNo">089</span> /**<a name="line.89"></a> +<span class="sourceLineNo">090</span> * Current Region State.<a name="line.90"></a> +<span class="sourceLineNo">091</span> * In-memory only. Not persisted.<a name="line.91"></a> +<span class="sourceLineNo">092</span> */<a name="line.92"></a> +<span class="sourceLineNo">093</span> // Mutable/Immutable? Changes have to be synchronized or not?<a name="line.93"></a> +<span class="sourceLineNo">094</span> // Data members are volatile which seems to say multi-threaded access is fine.<a name="line.94"></a> +<span class="sourceLineNo">095</span> // In the below we do check and set but the check state could change before<a name="line.95"></a> +<span class="sourceLineNo">096</span> // we do the set because no synchronization....which seems dodgy. Clear up<a name="line.96"></a> +<span class="sourceLineNo">097</span> // understanding here... how many threads accessing? Do locks make it so one<a name="line.97"></a> +<span class="sourceLineNo">098</span> // thread at a time working on a single Region's RegionStateNode? Lets presume<a name="line.98"></a> +<span class="sourceLineNo">099</span> // so for now. Odd is that elsewhere in this RegionStates, we synchronize on<a name="line.99"></a> +<span class="sourceLineNo">100</span> // the RegionStateNode instance. TODO.<a name="line.100"></a> +<span class="sourceLineNo">101</span> public static class RegionStateNode implements Comparable<RegionStateNode> {<a name="line.101"></a> +<span class="sourceLineNo">102</span> private final RegionInfo regionInfo;<a name="line.102"></a> +<span class="sourceLineNo">103</span> private final ProcedureEvent<?> event;<a name="line.103"></a> +<span class="sourceLineNo">104</span><a name="line.104"></a> +<span class="sourceLineNo">105</span> private volatile RegionTransitionProcedure procedure = null;<a name="line.105"></a> +<span class="sourceLineNo">106</span> private volatile ServerName regionLocation = null;<a name="line.106"></a> +<span class="sourceLineNo">107</span> private volatile ServerName lastHost = null;<a name="line.107"></a> +<span class="sourceLineNo">108</span> /**<a name="line.108"></a> +<span class="sourceLineNo">109</span> * A Region-in-Transition (RIT) moves through states.<a name="line.109"></a> +<span class="sourceLineNo">110</span> * See {@link State} for complete list. A Region that<a name="line.110"></a> +<span class="sourceLineNo">111</span> * is opened moves from OFFLINE => OPENING => OPENED.<a name="line.111"></a> +<span class="sourceLineNo">112</span> */<a name="line.112"></a> +<span class="sourceLineNo">113</span> private volatile State state = State.OFFLINE;<a name="line.113"></a> +<span class="sourceLineNo">114</span><a name="line.114"></a> +<span class="sourceLineNo">115</span> /**<a name="line.115"></a> +<span class="sourceLineNo">116</span> * Updated whenever a call to {@link #setRegionLocation(ServerName)}<a name="line.116"></a> +<span class="sourceLineNo">117</span> * or {@link #setState(State, State...)}.<a name="line.117"></a> +<span class="sourceLineNo">118</span> */<a name="line.118"></a> +<span class="sourceLineNo">119</span> private volatile long lastUpdate = 0;<a name="line.119"></a> +<span class="sourceLineNo">120</span><a name="line.120"></a> +<span class="sourceLineNo">121</span> private volatile long openSeqNum = HConstants.NO_SEQNUM;<a name="line.121"></a> +<span class="sourceLineNo">122</span><a name="line.122"></a> +<span class="sourceLineNo">123</span> public RegionStateNode(final RegionInfo regionInfo) {<a name="line.123"></a> +<span class="sourceLineNo">124</span> this.regionInfo = regionInfo;<a name="line.124"></a> +<span class="sourceLineNo">125</span> this.event = new AssignmentProcedureEvent(regionInfo);<a name="line.125"></a> +<span class="sourceLineNo">126</span> }<a name="line.126"></a> +<span class="sourceLineNo">127</span><a name="line.127"></a> +<span class="sourceLineNo">128</span> /**<a name="line.128"></a> +<span class="sourceLineNo">129</span> * @param update new region state this node should be assigned.<a name="line.129"></a> +<span class="sourceLineNo">130</span> * @param expected current state should be in this given list of expected states<a name="line.130"></a> +<span class="sourceLineNo">131</span> * @return true, if current state is in expected list; otherwise false.<a name="line.131"></a> +<span class="sourceLineNo">132</span> */<a name="line.132"></a> +<span class="sourceLineNo">133</span> public boolean setState(final State update, final State... expected) {<a name="line.133"></a> +<span class="sourceLineNo">134</span> if (!isInState(expected)) {<a name="line.134"></a> +<span class="sourceLineNo">135</span> return false;<a name="line.135"></a> +<span class="sourceLineNo">136</span> }<a name="line.136"></a> +<span class="sourceLineNo">137</span> this.state = update;<a name="line.137"></a> +<span class="sourceLineNo">138</span> this.lastUpdate = EnvironmentEdgeManager.currentTime();<a name="line.138"></a> +<span class="sourceLineNo">139</span> return true;<a name="line.139"></a> +<span class="sourceLineNo">140</span> }<a name="line.140"></a> +<span class="sourceLineNo">141</span><a name="line.141"></a> +<span class="sourceLineNo">142</span> /**<a name="line.142"></a> +<span class="sourceLineNo">143</span> * Put region into OFFLINE mode (set state and clear location).<a name="line.143"></a> +<span class="sourceLineNo">144</span> * @return Last recorded server deploy<a name="line.144"></a> +<span class="sourceLineNo">145</span> */<a name="line.145"></a> +<span class="sourceLineNo">146</span> public ServerName offline() {<a name="line.146"></a> +<span class="sourceLineNo">147</span> setState(State.OFFLINE);<a name="line.147"></a> +<span class="sourceLineNo">148</span> return setRegionLocation(null);<a name="line.148"></a> +<span class="sourceLineNo">149</span> }<a name="line.149"></a> +<span class="sourceLineNo">150</span><a name="line.150"></a> +<span class="sourceLineNo">151</span> /**<a name="line.151"></a> +<span class="sourceLineNo">152</span> * Set new {@link State} but only if currently in <code>expected</code> State<a name="line.152"></a> +<span class="sourceLineNo">153</span> * (if not, throw {@link UnexpectedStateException}.<a name="line.153"></a> +<span class="sourceLineNo">154</span> */<a name="line.154"></a> +<span class="sourceLineNo">155</span> public void transitionState(final State update, final State... expected)<a name="line.155"></a> +<span class="sourceLineNo">156</span> throws UnexpectedStateException {<a name="line.156"></a> +<span class="sourceLineNo">157</span> if (!setState(update, expected)) {<a name="line.157"></a> +<span class="sourceLineNo">158</span> throw new UnexpectedStateException("Expected " + Arrays.toString(expected) +<a name="line.158"></a> +<span class="sourceLineNo">159</span> " so could move to " + update + " but current state=" + getState());<a name="line.159"></a> +<span class="sourceLineNo">160</span> }<a name="line.160"></a> +<span class="sourceLineNo">161</span> }<a name="line.161"></a> +<span class="sourceLineNo">162</span><a name="line.162"></a> +<span class="sourceLineNo">163</span> public boolean isInState(final State... expected) {<a name="line.163"></a> +<span class="sourceLineNo">164</span> if (expected != null && expected.length > 0) {<a name="line.164"></a> +<span class="sourceLineNo">165</span> boolean expectedState = false;<a name="line.165"></a> +<span class="sourceLineNo">166</span> for (int i = 0; i < expected.length; ++i) {<a name="line.166"></a> +<span class="sourceLineNo">167</span> expectedState |= (getState() == expected[i]);<a name="line.167"></a> +<span class="sourceLineNo">168</span> }<a name="line.168"></a> +<span class="sourceLineNo">169</span> return expectedState;<a name="line.169"></a> +<span class="sourceLineNo">170</span> }<a name="line.170"></a> +<span class="sourceLineNo">171</span> return true;<a name="line.171"></a> +<span class="sourceLineNo">172</span> }<a name="line.172"></a> +<span class="sourceLineNo">173</span><a name="line.173"></a> +<span class="sourceLineNo">174</span> public boolean isStuck() {<a name="line.174"></a> +<span class="sourceLineNo">175</span> return isInState(State.FAILED_OPEN) && getProcedure() != null;<a name="line.175"></a> +<span class="sourceLineNo">176</span> }<a name="line.176"></a> +<span class="sourceLineNo">177</span><a name="line.177"></a> +<span class="sourceLineNo">178</span> public boolean isInTransition() {<a name="line.178"></a> +<span class="sourceLineNo">179</span> return getProcedure() != null;<a name="line.179"></a> +<span class="sourceLineNo">180</span> }<a name="line.180"></a> +<span class="sourceLineNo">181</span><a name="line.181"></a> +<span class="sourceLineNo">182</span> public long getLastUpdate() {<a name="line.182"></a> +<span class="sourceLineNo">183</span> return procedure != null ? procedure.getLastUpdate() : lastUpdate;<a name="line.183"></a> +<span class="sourceLineNo">184</span> }<a name="line.184"></a> +<span class="sourceLineNo">185</span><a name="line.185"></a> +<span class="sourceLineNo">186</span> public void setLastHost(final ServerName serverName) {<a name="line.186"></a> +<span class="sourceLineNo">187</span> this.lastHost = serverName;<a name="line.187"></a> +<span class="sourceLineNo">188</span> }<a name="line.188"></a> +<span class="sourceLineNo">189</span><a name="line.189"></a> +<span class="sourceLineNo">190</span> public void setOpenSeqNum(final long seqId) {<a name="line.190"></a> +<span class="sourceLineNo">191</span> this.openSeqNum = seqId;<a name="line.191"></a> +<span class="sourceLineNo">192</span> }<a name="line.192"></a> +<span class="sourceLineNo">193</span><a name="line.193"></a> +<span class="sourceLineNo">194</span> public ServerName setRegionLocation(final ServerName serverName) {<a name="line.194"></a> +<span class="sourceLineNo">195</span> ServerName lastRegionLocation = this.regionLocation;<a name="line.195"></a> +<span class="sourceLineNo">196</span> if (LOG.isTraceEnabled() && serverName == null) {<a name="line.196"></a> +<span class="sourceLineNo">197</span> LOG.trace("Tracking when we are set to null " + this, new Throwable("TRACE"));<a name="line.197"></a> +<span class="sourceLineNo">198</span> }<a name="line.198"></a> +<span class="sourceLineNo">199</span> this.regionLocation = serverName;<a name="line.199"></a> +<span class="sourceLineNo">200</span> this.lastUpdate = EnvironmentEdgeManager.currentTime();<a name="line.200"></a> +<span class="sourceLineNo">201</span> return lastRegionLocation;<a name="line.201"></a> +<span class="sourceLineNo">202</span> }<a name="line.202"></a> +<span class="sourceLineNo">203</span><a name="line.203"></a> +<span class="sourceLineNo">204</span> public boolean setProcedure(final RegionTransitionProcedure proc) {<a name="line.204"></a> +<span class="sourceLineNo">205</span> if (this.procedure != null && this.procedure != proc) {<a name="line.205"></a> +<span class="sourceLineNo">206</span> return false;<a name="line.206"></a> +<span class="sourceLineNo">207</span> }<a name="line.207"></a> +<span class="sourceLineNo">208</span> this.procedure = proc;<a name="line.208"></a> +<span class="sourceLineNo">209</span> return true;<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 boolean unsetProcedure(final RegionTransitionProcedure proc) {<a name="line.212"></a> +<span class="sourceLineNo">213</span> if (this.procedure != null && this.procedure != proc) {<a name="line.213"></a> +<span class="sourceLineNo">214</span> return false;<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span> this.procedure = null;<a name="line.216"></a> +<span class="sourceLineNo">217</span> return true;<a name="line.217"></a> +<span class="sourceLineNo">218</span> }<a name="line.218"></a> +<span class="sourceLineNo">219</span><a name="line.219"></a> +<span class="sourceLineNo">220</span> public RegionTransitionProcedure getProcedure() {<a name="line.220"></a> +<span class="sourceLineNo">221</span> return procedure;<a name="line.221"></a> +<span class="sourceLineNo">222</span> }<a name="line.222"></a> +<span class="sourceLineNo">223</span><a name="line.223"></a> +<span class="sourceLineNo">224</span> public ProcedureEvent<?> getProcedureEvent() {<a name="line.224"></a> +<span class="sourceLineNo">225</span> return event;<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 RegionInfo getRegionInfo() {<a name="line.228"></a> +<span class="sourceLineNo">229</span> return regionInfo;<a name="line.229"></a> +<span class="sourceLineNo">230</span> }<a name="line.230"></a> +<span class="sourceLineNo">231</span><a name="line.231"></a> +<span class="sourceLineNo">232</span> public TableName getTable() {<a name="line.232"></a> +<span class="sourceLineNo">233</span> return getRegionInfo().getTable();<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> public boolean isSystemTable() {<a name="line.236"></a> +<span class="sourceLineNo">237</span> return getTable().isSystemTable();<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> public ServerName getLastHost() {<a name="line.240"></a> +<span class="sourceLineNo">241</span> return lastHost;<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> public ServerName getRegionLocation() {<a name="line.244"></a> +<span class="sourceLineNo">245</span> return regionLocation;<a name="line.245"></a> +<span class="sourceLineNo">246</span> }<a name="line.246"></a> +<span class="sourceLineNo">247</span><a name="line.247"></a> +<span class="sourceLineNo">248</span> public State getState() {<a name="line.248"></a> +<span class="sourceLineNo">249</span> return state;<a name="line.249"></a> +<span class="sourceLineNo">250</span> }<a name="line.250"></a> +<span class="sourceLineNo">251</span><a name="line.251"></a> +<span class="sourceLineNo">252</span> public long getOpenSeqNum() {<a name="line.252"></a> +<span class="sourceLineNo">253</span> return openSeqNum;<a name="line.253"></a> +<span class="sourceLineNo">254</span> }<a name="line.254"></a> +<span class="sourceLineNo">255</span><a name="line.255"></a> +<span class="sourceLineNo">256</span> public int getFormatVersion() {<a name="line.256"></a> +<span class="sourceLineNo">257</span> // we don't have any format for now<a name="line.257"></a> +<span class="sourceLineNo">258</span> // it should probably be in regionInfo.getFormatVersion()<a name="line.258"></a> +<span class="sourceLineNo">259</span> return 0;<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> public RegionState toRegionState() {<a name="line.262"></a> +<span class="sourceLineNo">263</span> return new RegionState(getRegionInfo(), getState(), getLastUpdate(), getRegionLocation());<a name="line.263"></a> +<span class="sourceLineNo">264</span> }<a name="line.264"></a> +<span class="sourceLineNo">265</span><a name="line.265"></a> +<span class="sourceLineNo">266</span> @Override<a name="line.266"></a> +<span class="sourceLineNo">267</span> public int compareTo(final RegionStateNode other) {<a name="line.267"></a> +<span class="sourceLineNo">268</span> // NOTE: RegionInfo sort by table first, so we are relying on that.<a name="line.268"></a> +<span class="sourceLineNo">269</span> // we have a TestRegionState#testOrderedByTable() that check for that.<a name="line.269"></a> +<span class="sourceLineNo">270</span> return RegionInfo.COMPARATOR.compare(getRegionInfo(), other.getRegionInfo());<a name="line.270"></a> +<span class="sourceLineNo">271</span> }<a name="line.271"></a> +<span class="sourceLineNo">272</span><a name="line.272"></a> +<span class="sourceLineNo">273</span> @Override<a name="line.273"></a> +<span class="sourceLineNo">274</span> public int hashCode() {<a name="line.274"></a> +<span class="sourceLineNo">275</span> return getRegionInfo().hashCode();<a name="line.275"></a> +<span class="sourceLineNo">276</span> }<a name="line.276"></a> +<span class="sourceLineNo">277</span><a name="line.277"></a> +<span class="sourceLineNo">278</span> @Override<a name="line.278"></a> +<span class="sourceLineNo">279</span> public boolean equals(final Object other) {<a name="line.279"></a> +<span class="sourceLineNo">280</span> if (this == other) return true;<a name="line.280"></a> +<span class="sourceLineNo">281</span> if (!(other instanceof RegionStateNode)) return false;<a name="line.281"></a> +<span class="sourceLineNo">282</span> return compareTo((RegionStateNode)other) == 0;<a name="line.282"></a> +<span class="sourceLineNo">283</span> }<a name="line.283"></a> +<span class="sourceLineNo">284</span><a name="line.284"></a> +<span class="sourceLineNo">285</span> @Override<a name="line.285"></a> +<span class="sourceLineNo">286</span> public String toString() {<a name="line.286"></a> +<span class="sourceLineNo">287</span> return toDescriptiveString();<a name="line.287"></a> +<span class="sourceLineNo">288</span> }<a name="line.288"></a> +<span class="sourceLineNo">289</span><a name="line.289"></a> +<span class="sourceLineNo">290</span> public String toShortString() {<a name="line.290"></a> +<span class="sourceLineNo">291</span> // rit= is the current Region-In-Transition State -- see State enum.<a name="line.291"></a> +<span class="sourceLineNo">292</span> return String.format("rit=%s, location=%s", getState(), getRegionLocation());<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> public String toDescriptiveString() {<a name="line.295"></a> +<span class="sourceLineNo">296</span> return String.format("%s, table=%s, region=%s",<a name="line.296"></a> +<span class="sourceLineNo">297</span> toShortString(), getTable(), getRegionInfo().getEncodedName());<a name="line.297"></a> +<span class="sourceLineNo">298</span> }<a name="line.298"></a> +<span class="sourceLineNo">299</span> }<a name="line.299"></a> +<span class="sourceLineNo">300</span><a name="line.300"></a> +<span class="sourceLineNo">301</span> // This comparator sorts the RegionStates by time stamp then Region name.<a name="line.301"></a> +<span class="sourceLineNo">302</span> // Comparing by timestamp alone can lead us to discard different RegionStates that happen<a name="line.302"></a> +<span class="sourceLineNo">303</span> // to share a timestamp.<a name="line.303"></a> +<span class="sourceLineNo">304</span> private static class RegionStateStampComparator implements Comparator<RegionState> {<a name="line.304"></a> +<span class="sourceLineNo">305</span> @Override<a name="line.305"></a> +<span class="sourceLineNo">306</span> public int compare(final RegionState l, final RegionState r) {<a name="line.306"></a> +<span class="sourceLineNo">307</span> int stampCmp = Long.compare(l.getStamp(), r.getStamp());<a name="line.307"></a> +<span class="sourceLineNo">308</span> return stampCmp != 0 ? stampCmp : RegionInfo.COMPARATOR.compare(l.getRegion(), r.getRegion());<a name="line.308"></a> +<span class="sourceLineNo">309</span> }<a name="line.309"></a> +<span class="sourceLineNo">310</span> }<a name="line.310"></a> +<span class="sourceLineNo">311</span><a name="line.311"></a> +<span class="sourceLineNo">312</span> /**<a name="line.312"></a> +<span class="sourceLineNo">313</span> * Server State.<a name="line.313"></a> +<span class="sourceLineNo">314</span> */<a name="line.314"></a> +<span class="sourceLineNo">315</span> public enum ServerState {<a name="line.315"></a> +<span class="sourceLineNo">316</span> /**<a name="line.316"></a> +<span class="sourceLineNo">317</span> * Initial state. Available.<a name="line.317"></a> +<span class="sourceLineNo">318</span> */<a name="line.318"></a> +<span class="sourceLineNo">319</span> ONLINE,<a name="line.319"></a> +<span class="sourceLineNo">320</span><a name="line.320"></a> +<span class="sourceLineNo">321</span> /**<a name="line.321"></a> +<span class="sourceLineNo">322</span> * Only server which carries meta can have this state. We will split wal for meta and then<a name="line.322"></a> +<span class="sourceLineNo">323</span> * assign meta first before splitting other wals.<a name="line.323"></a> +<span class="sourceLineNo">324</span> */<a name="line.324"></a> +<span class="sourceLineNo">325</span> SPLITTING_META,<a name="line.325"></a> +<span class="sourceLineNo">326</span><a name="line.326"></a> +<span class="sourceLineNo">327</span> /**<a name="line.327"></a> +<span class="sourceLineNo">328</span> * Indicate that the meta splitting is done. We need this state so that the UnassignProcedure<a name="line.328"></a> +<span class="sourceLineNo">329</span> * for meta can safely quit. See the comments in UnassignProcedure.remoteCallFailed for more<a name="line.329"></a> +<span class="sourceLineNo">330</span> * details.<a name="line.330"></a> +<span class="sourceLineNo">331</span> */<a name="line.331"></a> +<span class="sourceLineNo">332</span> SPLITTING_META_DONE,<a name="line.332"></a> +<span class="sourceLineNo">333</span><a name="line.333"></a> +<span class="sourceLineNo">334</span> /**<a name="line.334"></a> +<span class="sourceLineNo">335</span> * Server expired/crashed. Currently undergoing WAL splitting.<a name="line.335"></a> +<span class="sourceLineNo">336</span> */<a name="line.336"></a> +<span class="sourceLineNo">337</span> SPLITTING,<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> * WAL splitting done. This state will be used to tell the UnassignProcedure that it can safely<a name="line.340"></a> +<span class="sourceLineNo">341</span> * quit. See the comments in UnassignProcedure.remoteCallFailed for more details.<a name="line.341"></a> +<span class="sourceLineNo">342</span> */<a name="line.342"></a> +<span class="sourceLineNo">343</span> OFFLINE<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> * State of Server; list of hosted regions, etc.<a name="line.347"></a> +<span class="sourceLineNo">348</span> */<a name="line.348"></a> +<span class="sourceLineNo">349</span> public static class ServerStateNode implements Comparable<ServerStateNode> {<a name="line.349"></a> +<s
<TRUNCATED>
