http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f6f9d4f3/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.PostOpenDeployTasksThread.html
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diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.PostOpenDeployTasksThread.html
b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.PostOpenDeployTasksThread.html
index 4a11f27..7c7966d 100644
---
a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.PostOpenDeployTasksThread.html
+++
b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.PostOpenDeployTasksThread.html
@@ -49,287 +49,290 @@
<span class="sourceLineNo">041</span> * Handles opening of a region on a
region server.<a name="line.41"></a>
<span class="sourceLineNo">042</span> * <p><a name="line.42"></a>
<span class="sourceLineNo">043</span> * This is executed after receiving an
OPEN RPC from the master or client.<a name="line.43"></a>
-<span class="sourceLineNo">044</span> */<a name="line.44"></a>
-<span class="sourceLineNo">045</span>@InterfaceAudience.Private<a
name="line.45"></a>
-<span class="sourceLineNo">046</span>public class OpenRegionHandler extends
EventHandler {<a name="line.46"></a>
-<span class="sourceLineNo">047</span> private static final Logger LOG =
LoggerFactory.getLogger(OpenRegionHandler.class);<a name="line.47"></a>
-<span class="sourceLineNo">048</span><a name="line.48"></a>
-<span class="sourceLineNo">049</span> protected final RegionServerServices
rsServices;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span> private final RegionInfo regionInfo;<a
name="line.51"></a>
-<span class="sourceLineNo">052</span> private final TableDescriptor htd;<a
name="line.52"></a>
-<span class="sourceLineNo">053</span> private final long masterSystemTime;<a
name="line.53"></a>
-<span class="sourceLineNo">054</span><a name="line.54"></a>
-<span class="sourceLineNo">055</span> public OpenRegionHandler(final Server
server,<a name="line.55"></a>
-<span class="sourceLineNo">056</span> final RegionServerServices
rsServices, RegionInfo regionInfo,<a name="line.56"></a>
-<span class="sourceLineNo">057</span> TableDescriptor htd, long
masterSystemTime) {<a name="line.57"></a>
-<span class="sourceLineNo">058</span> this(server, rsServices, regionInfo,
htd, masterSystemTime, EventType.M_RS_OPEN_REGION);<a name="line.58"></a>
-<span class="sourceLineNo">059</span> }<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span> protected OpenRegionHandler(final
Server server,<a name="line.61"></a>
-<span class="sourceLineNo">062</span> final
RegionServerServices rsServices, final RegionInfo regionInfo,<a
name="line.62"></a>
-<span class="sourceLineNo">063</span> final
TableDescriptor htd, long masterSystemTime, EventType eventType) {<a
name="line.63"></a>
-<span class="sourceLineNo">064</span> super(server, eventType);<a
name="line.64"></a>
-<span class="sourceLineNo">065</span> this.rsServices = rsServices;<a
name="line.65"></a>
-<span class="sourceLineNo">066</span> this.regionInfo = regionInfo;<a
name="line.66"></a>
-<span class="sourceLineNo">067</span> this.htd = htd;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> this.masterSystemTime =
masterSystemTime;<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> public RegionInfo getRegionInfo() {<a
name="line.71"></a>
-<span class="sourceLineNo">072</span> return regionInfo;<a
name="line.72"></a>
-<span class="sourceLineNo">073</span> }<a name="line.73"></a>
-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> @Override<a name="line.75"></a>
-<span class="sourceLineNo">076</span> public void process() throws
IOException {<a name="line.76"></a>
-<span class="sourceLineNo">077</span> boolean openSuccessful = false;<a
name="line.77"></a>
-<span class="sourceLineNo">078</span> final String regionName =
regionInfo.getRegionNameAsString();<a name="line.78"></a>
-<span class="sourceLineNo">079</span> HRegion region = null;<a
name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> try {<a name="line.81"></a>
-<span class="sourceLineNo">082</span> if (this.server.isStopped() ||
this.rsServices.isStopping()) {<a name="line.82"></a>
-<span class="sourceLineNo">083</span> return;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> }<a name="line.84"></a>
-<span class="sourceLineNo">085</span> final String encodedName =
regionInfo.getEncodedName();<a name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> // 2 different difficult situations
can occur<a name="line.87"></a>
-<span class="sourceLineNo">088</span> // 1) The opening was cancelled.
This is an expected situation<a name="line.88"></a>
-<span class="sourceLineNo">089</span> // 2) The region is now marked as
online while we're suppose to open. This would be a bug.<a name="line.89"></a>
-<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span> // Check that this region is not
already online<a name="line.91"></a>
-<span class="sourceLineNo">092</span> if
(this.rsServices.getRegion(encodedName) != null) {<a name="line.92"></a>
-<span class="sourceLineNo">093</span> LOG.error("Region " + encodedName
+<a name="line.93"></a>
-<span class="sourceLineNo">094</span> " was already online when we
started processing the opening. " +<a name="line.94"></a>
-<span class="sourceLineNo">095</span> "Marking this new attempt as
failed");<a name="line.95"></a>
-<span class="sourceLineNo">096</span> return;<a name="line.96"></a>
-<span class="sourceLineNo">097</span> }<a name="line.97"></a>
-<span class="sourceLineNo">098</span><a name="line.98"></a>
-<span class="sourceLineNo">099</span> // Check that we're still supposed
to open the region.<a name="line.99"></a>
-<span class="sourceLineNo">100</span> // If fails, just return. Someone
stole the region from under us.<a name="line.100"></a>
-<span class="sourceLineNo">101</span> if (!isRegionStillOpening()){<a
name="line.101"></a>
-<span class="sourceLineNo">102</span> LOG.error("Region " + encodedName
+ " opening cancelled");<a name="line.102"></a>
-<span class="sourceLineNo">103</span> return;<a name="line.103"></a>
-<span class="sourceLineNo">104</span> }<a name="line.104"></a>
-<span class="sourceLineNo">105</span><a name="line.105"></a>
-<span class="sourceLineNo">106</span> // Open region. After a successful
open, failures in subsequent<a name="line.106"></a>
-<span class="sourceLineNo">107</span> // processing needs to do a close
as part of cleanup.<a name="line.107"></a>
-<span class="sourceLineNo">108</span> region = openRegion();<a
name="line.108"></a>
-<span class="sourceLineNo">109</span> if (region == null) {<a
name="line.109"></a>
-<span class="sourceLineNo">110</span> return;<a name="line.110"></a>
-<span class="sourceLineNo">111</span> }<a name="line.111"></a>
-<span class="sourceLineNo">112</span><a name="line.112"></a>
-<span class="sourceLineNo">113</span> if (!updateMeta(region,
masterSystemTime) || this.server.isStopped() ||<a name="line.113"></a>
-<span class="sourceLineNo">114</span> this.rsServices.isStopping())
{<a name="line.114"></a>
-<span class="sourceLineNo">115</span> return;<a name="line.115"></a>
-<span class="sourceLineNo">116</span> }<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> if (!isRegionStillOpening()) {<a
name="line.118"></a>
-<span class="sourceLineNo">119</span> return;<a name="line.119"></a>
-<span class="sourceLineNo">120</span> }<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span> // Successful region open, and add
it to MutableOnlineRegions<a name="line.122"></a>
-<span class="sourceLineNo">123</span>
this.rsServices.addRegion(region);<a name="line.123"></a>
-<span class="sourceLineNo">124</span> openSuccessful = true;<a
name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> // Done! Successful region open<a
name="line.126"></a>
-<span class="sourceLineNo">127</span> LOG.debug("Opened " + regionName +
" on " + this.server.getServerName());<a name="line.127"></a>
-<span class="sourceLineNo">128</span> } finally {<a name="line.128"></a>
-<span class="sourceLineNo">129</span> // Do all clean up here<a
name="line.129"></a>
-<span class="sourceLineNo">130</span> if (!openSuccessful) {<a
name="line.130"></a>
-<span class="sourceLineNo">131</span> doCleanUpOnFailedOpen(region);<a
name="line.131"></a>
-<span class="sourceLineNo">132</span> }<a name="line.132"></a>
-<span class="sourceLineNo">133</span> final Boolean current =
this.rsServices.getRegionsInTransitionInRS().<a name="line.133"></a>
-<span class="sourceLineNo">134</span>
remove(this.regionInfo.getEncodedNameAsBytes());<a name="line.134"></a>
-<span class="sourceLineNo">135</span><a name="line.135"></a>
-<span class="sourceLineNo">136</span> // Let's check if we have met a
race condition on open cancellation....<a name="line.136"></a>
-<span class="sourceLineNo">137</span> // A better solution would be to
not have any race condition.<a name="line.137"></a>
-<span class="sourceLineNo">138</span> //
this.rsServices.getRegionsInTransitionInRS().remove(<a name="line.138"></a>
-<span class="sourceLineNo">139</span> //
this.regionInfo.getEncodedNameAsBytes(), Boolean.TRUE);<a name="line.139"></a>
-<span class="sourceLineNo">140</span> // would help.<a
name="line.140"></a>
-<span class="sourceLineNo">141</span> if (openSuccessful) {<a
name="line.141"></a>
-<span class="sourceLineNo">142</span> if (current == null) { // Should
NEVER happen, but let's be paranoid.<a name="line.142"></a>
-<span class="sourceLineNo">143</span> LOG.error("Bad state: we've
just opened a region that was NOT in transition. Region="<a name="line.143"></a>
-<span class="sourceLineNo">144</span> + regionName);<a
name="line.144"></a>
-<span class="sourceLineNo">145</span> } else if
(Boolean.FALSE.equals(current)) { // Can happen, if we're<a name="line.145"></a>
-<span class="sourceLineNo">146</span>
// really unlucky.<a name="line.146"></a>
-<span class="sourceLineNo">147</span> LOG.error("Race condition:
we've finished to open a region, while a close was requested "<a
name="line.147"></a>
-<span class="sourceLineNo">148</span> + " on region=" +
regionName + ". It can be a critical error, as a region that"<a
name="line.148"></a>
-<span class="sourceLineNo">149</span> + " should be closed is now
opened. Closing it now");<a name="line.149"></a>
-<span class="sourceLineNo">150</span> cleanupFailedOpen(region);<a
name="line.150"></a>
-<span class="sourceLineNo">151</span> }<a name="line.151"></a>
-<span class="sourceLineNo">152</span> }<a name="line.152"></a>
-<span class="sourceLineNo">153</span> }<a name="line.153"></a>
-<span class="sourceLineNo">154</span> }<a name="line.154"></a>
-<span class="sourceLineNo">155</span><a name="line.155"></a>
-<span class="sourceLineNo">156</span> private void
doCleanUpOnFailedOpen(HRegion region)<a name="line.156"></a>
-<span class="sourceLineNo">157</span> throws IOException {<a
name="line.157"></a>
-<span class="sourceLineNo">158</span> try {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> if (region != null) {<a
name="line.159"></a>
-<span class="sourceLineNo">160</span> cleanupFailedOpen(region);<a
name="line.160"></a>
-<span class="sourceLineNo">161</span> }<a name="line.161"></a>
-<span class="sourceLineNo">162</span> } finally {<a name="line.162"></a>
-<span class="sourceLineNo">163</span>
rsServices.reportRegionStateTransition(new RegionStateTransitionContext(<a
name="line.163"></a>
-<span class="sourceLineNo">164</span> TransitionCode.FAILED_OPEN,
HConstants.NO_SEQNUM, -1, regionInfo));<a name="line.164"></a>
-<span class="sourceLineNo">165</span> }<a name="line.165"></a>
-<span class="sourceLineNo">166</span> }<a name="line.166"></a>
-<span class="sourceLineNo">167</span><a name="line.167"></a>
-<span class="sourceLineNo">168</span> /**<a name="line.168"></a>
-<span class="sourceLineNo">169</span> * Update ZK or META. This can take a
while if for example the<a name="line.169"></a>
-<span class="sourceLineNo">170</span> * hbase:meta is not available -- if
server hosting hbase:meta crashed and we are<a name="line.170"></a>
-<span class="sourceLineNo">171</span> * waiting on it to come back -- so run
in a thread and keep updating znode<a name="line.171"></a>
-<span class="sourceLineNo">172</span> * state meantime so master doesn't
timeout our region-in-transition.<a name="line.172"></a>
-<span class="sourceLineNo">173</span> * Caller must cleanup region if this
fails.<a name="line.173"></a>
-<span class="sourceLineNo">174</span> */<a name="line.174"></a>
-<span class="sourceLineNo">175</span> boolean updateMeta(final HRegion r,
long masterSystemTime) {<a name="line.175"></a>
-<span class="sourceLineNo">176</span> if (this.server.isStopped() ||
this.rsServices.isStopping()) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> return false;<a name="line.177"></a>
-<span class="sourceLineNo">178</span> }<a name="line.178"></a>
-<span class="sourceLineNo">179</span> // Object we do wait/notify on. Make
it boolean. If set, we're done.<a name="line.179"></a>
-<span class="sourceLineNo">180</span> // Else, wait.<a name="line.180"></a>
-<span class="sourceLineNo">181</span> final AtomicBoolean signaller = new
AtomicBoolean(false);<a name="line.181"></a>
-<span class="sourceLineNo">182</span> PostOpenDeployTasksThread t = new
PostOpenDeployTasksThread(r,<a name="line.182"></a>
-<span class="sourceLineNo">183</span> this.server, this.rsServices,
signaller, masterSystemTime);<a name="line.183"></a>
-<span class="sourceLineNo">184</span> t.start();<a name="line.184"></a>
-<span class="sourceLineNo">185</span> // Post open deploy task:<a
name="line.185"></a>
-<span class="sourceLineNo">186</span> // meta => update meta location
in ZK<a name="line.186"></a>
-<span class="sourceLineNo">187</span> // other region => update meta<a
name="line.187"></a>
-<span class="sourceLineNo">188</span> while (!signaller.get() &&
t.isAlive() && !this.server.isStopped() &&<a
name="line.188"></a>
-<span class="sourceLineNo">189</span> !this.rsServices.isStopping()
&& isRegionStillOpening()) {<a name="line.189"></a>
-<span class="sourceLineNo">190</span> synchronized (signaller) {<a
name="line.190"></a>
-<span class="sourceLineNo">191</span> try {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> // Wait for 10 seconds, so that
server shutdown<a name="line.192"></a>
-<span class="sourceLineNo">193</span> // won't take too long if this
thread happens to run.<a name="line.193"></a>
-<span class="sourceLineNo">194</span> if (!signaller.get())
signaller.wait(10000);<a name="line.194"></a>
-<span class="sourceLineNo">195</span> } catch (InterruptedException e)
{<a name="line.195"></a>
-<span class="sourceLineNo">196</span> // Go to the loop check.<a
name="line.196"></a>
-<span class="sourceLineNo">197</span> }<a name="line.197"></a>
-<span class="sourceLineNo">198</span> }<a name="line.198"></a>
-<span class="sourceLineNo">199</span> }<a name="line.199"></a>
-<span class="sourceLineNo">200</span> // Is thread still alive? We may
have left above loop because server is<a name="line.200"></a>
-<span class="sourceLineNo">201</span> // stopping or we timed out the edit.
Is so, interrupt it.<a name="line.201"></a>
-<span class="sourceLineNo">202</span> if (t.isAlive()) {<a
name="line.202"></a>
-<span class="sourceLineNo">203</span> if (!signaller.get()) {<a
name="line.203"></a>
-<span class="sourceLineNo">204</span> // Thread still running;
interrupt<a name="line.204"></a>
-<span class="sourceLineNo">205</span> LOG.debug("Interrupting thread "
+ t);<a name="line.205"></a>
-<span class="sourceLineNo">206</span> t.interrupt();<a
name="line.206"></a>
-<span class="sourceLineNo">207</span> }<a name="line.207"></a>
-<span class="sourceLineNo">208</span> try {<a name="line.208"></a>
-<span class="sourceLineNo">209</span> t.join();<a name="line.209"></a>
-<span class="sourceLineNo">210</span> } catch (InterruptedException ie)
{<a name="line.210"></a>
-<span class="sourceLineNo">211</span> LOG.warn("Interrupted joining "
+<a name="line.211"></a>
-<span class="sourceLineNo">212</span>
r.getRegionInfo().getRegionNameAsString(), ie);<a name="line.212"></a>
-<span class="sourceLineNo">213</span>
Thread.currentThread().interrupt();<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><a name="line.216"></a>
-<span class="sourceLineNo">217</span> // Was there an exception opening the
region? This should trigger on<a name="line.217"></a>
-<span class="sourceLineNo">218</span> // InterruptedException too. If so,
we failed.<a name="line.218"></a>
-<span class="sourceLineNo">219</span> return (!Thread.interrupted()
&& t.getException() == null);<a name="line.219"></a>
-<span class="sourceLineNo">220</span> }<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> * Thread to run region post open
tasks. Call {@link #getException()} after the thread finishes<a
name="line.223"></a>
-<span class="sourceLineNo">224</span> * to check for exceptions running
{@link RegionServerServices#postOpenDeployTasks(Region)}.<a name="line.224"></a>
-<span class="sourceLineNo">225</span> */<a name="line.225"></a>
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extends Thread {<a name="line.226"></a>
-<span class="sourceLineNo">227</span> private Throwable exception = null;<a
name="line.227"></a>
-<span class="sourceLineNo">228</span> private final Server server;<a
name="line.228"></a>
-<span class="sourceLineNo">229</span> private final RegionServerServices
services;<a name="line.229"></a>
-<span class="sourceLineNo">230</span> private final HRegion region;<a
name="line.230"></a>
-<span class="sourceLineNo">231</span> private final AtomicBoolean
signaller;<a name="line.231"></a>
-<span class="sourceLineNo">232</span> private final long
masterSystemTime;<a name="line.232"></a>
-<span class="sourceLineNo">233</span><a name="line.233"></a>
-<span class="sourceLineNo">234</span> PostOpenDeployTasksThread(final
HRegion region, final Server server,<a name="line.234"></a>
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services, final AtomicBoolean signaller, long masterSystemTime) {<a
name="line.235"></a>
-<span class="sourceLineNo">236</span> super("PostOpenDeployTasks:" +
region.getRegionInfo().getEncodedName());<a name="line.236"></a>
-<span class="sourceLineNo">237</span> this.setDaemon(true);<a
name="line.237"></a>
-<span class="sourceLineNo">238</span> this.server = server;<a
name="line.238"></a>
-<span class="sourceLineNo">239</span> this.services = services;<a
name="line.239"></a>
-<span class="sourceLineNo">240</span> this.region = region;<a
name="line.240"></a>
-<span class="sourceLineNo">241</span> this.signaller = signaller;<a
name="line.241"></a>
-<span class="sourceLineNo">242</span> this.masterSystemTime =
masterSystemTime;<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> @Override<a name="line.245"></a>
-<span class="sourceLineNo">246</span> public void run() {<a
name="line.246"></a>
-<span class="sourceLineNo">247</span> try {<a name="line.247"></a>
-<span class="sourceLineNo">248</span>
this.services.postOpenDeployTasks(new PostOpenDeployContext(region,
masterSystemTime));<a name="line.248"></a>
-<span class="sourceLineNo">249</span> } catch (Throwable e) {<a
name="line.249"></a>
-<span class="sourceLineNo">250</span> String msg = "Exception running
postOpenDeployTasks; region=" +<a name="line.250"></a>
-<span class="sourceLineNo">251</span>
this.region.getRegionInfo().getEncodedName();<a name="line.251"></a>
-<span class="sourceLineNo">252</span> this.exception = e;<a
name="line.252"></a>
-<span class="sourceLineNo">253</span> if (e instanceof IOException<a
name="line.253"></a>
-<span class="sourceLineNo">254</span> &&
isRegionStillOpening(region.getRegionInfo(), services)) {<a name="line.254"></a>
-<span class="sourceLineNo">255</span> server.abort(msg, e);<a
name="line.255"></a>
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-<span class="sourceLineNo">257</span> LOG.warn(msg, e);<a
name="line.257"></a>
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-<span class="sourceLineNo">259</span> }<a name="line.259"></a>
-<span class="sourceLineNo">260</span> // We're done. Set flag then wake
up anyone waiting on thread to complete.<a name="line.260"></a>
-<span class="sourceLineNo">261</span> this.signaller.set(true);<a
name="line.261"></a>
-<span class="sourceLineNo">262</span> synchronized (this.signaller) {<a
name="line.262"></a>
-<span class="sourceLineNo">263</span> this.signaller.notify();<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><a name="line.266"></a>
-<span class="sourceLineNo">267</span> /**<a name="line.267"></a>
-<span class="sourceLineNo">268</span> * @return Null or the run exception;
call this method after thread is done.<a name="line.268"></a>
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-<span class="sourceLineNo">270</span> Throwable getException() {<a
name="line.270"></a>
-<span class="sourceLineNo">271</span> return this.exception;<a
name="line.271"></a>
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successful open else null.<a name="line.276"></a>
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name="line.278"></a>
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also periodically tickles OPENING<a name="line.281"></a>
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name="line.287"></a>
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{<a name="line.290"></a>
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name="line.292"></a>
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see the 'null' return value<a name="line.298"></a>
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FAILED_OPEN. If that fails,<a name="line.299"></a>
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in the master to reassign.<a name="line.300"></a>
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region) throws IOException {<a name="line.307"></a>
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name="line.308"></a>
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this.rsServices.removeRegion(region, null);<a name="line.309"></a>
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name="line.310"></a>
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isRegionStillOpening(<a name="line.314"></a>
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RegionServerServices rsServices) {<a name="line.315"></a>
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regionInfo.getEncodedNameAsBytes();<a name="line.316"></a>
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rsServices.getRegionsInTransitionInRS().get(encodedName);<a name="line.317"></a>
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// true means opening for RIT<a name="line.318"></a>
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{<a name="line.321"></a>
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isRegionStillOpening(regionInfo, rsServices);<a name="line.322"></a>
-<span class="sourceLineNo">323</span> }<a name="line.323"></a>
-<span class="sourceLineNo">324</span>}<a name="line.324"></a>
+<span class="sourceLineNo">044</span> * @deprecated Keep it here only for
compatible<a name="line.44"></a>
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name="line.45"></a>
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+<span class="sourceLineNo">047</span>@Deprecated<a name="line.47"></a>
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name="line.48"></a>
+<span class="sourceLineNo">049</span>public class OpenRegionHandler extends
EventHandler {<a name="line.49"></a>
+<span class="sourceLineNo">050</span> private static final Logger LOG =
LoggerFactory.getLogger(OpenRegionHandler.class);<a name="line.50"></a>
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rsServices;<a name="line.52"></a>
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+<span class="sourceLineNo">054</span> private final RegionInfo regionInfo;<a
name="line.54"></a>
+<span class="sourceLineNo">055</span> private final TableDescriptor htd;<a
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name="line.56"></a>
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server,<a name="line.58"></a>
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rsServices, RegionInfo regionInfo,<a name="line.59"></a>
+<span class="sourceLineNo">060</span> TableDescriptor htd, long
masterSystemTime) {<a name="line.60"></a>
+<span class="sourceLineNo">061</span> this(server, rsServices, regionInfo,
htd, masterSystemTime, EventType.M_RS_OPEN_REGION);<a name="line.61"></a>
+<span class="sourceLineNo">062</span> }<a name="line.62"></a>
+<span class="sourceLineNo">063</span><a name="line.63"></a>
+<span class="sourceLineNo">064</span> protected OpenRegionHandler(final
Server server,<a name="line.64"></a>
+<span class="sourceLineNo">065</span> final
RegionServerServices rsServices, final RegionInfo regionInfo,<a
name="line.65"></a>
+<span class="sourceLineNo">066</span> final
TableDescriptor htd, long masterSystemTime, EventType eventType) {<a
name="line.66"></a>
+<span class="sourceLineNo">067</span> super(server, eventType);<a
name="line.67"></a>
+<span class="sourceLineNo">068</span> this.rsServices = rsServices;<a
name="line.68"></a>
+<span class="sourceLineNo">069</span> this.regionInfo = regionInfo;<a
name="line.69"></a>
+<span class="sourceLineNo">070</span> this.htd = htd;<a name="line.70"></a>
+<span class="sourceLineNo">071</span> this.masterSystemTime =
masterSystemTime;<a name="line.71"></a>
+<span class="sourceLineNo">072</span> }<a name="line.72"></a>
+<span class="sourceLineNo">073</span><a name="line.73"></a>
+<span class="sourceLineNo">074</span> public RegionInfo getRegionInfo() {<a
name="line.74"></a>
+<span class="sourceLineNo">075</span> return regionInfo;<a
name="line.75"></a>
+<span class="sourceLineNo">076</span> }<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> @Override<a name="line.78"></a>
+<span class="sourceLineNo">079</span> public void process() throws
IOException {<a name="line.79"></a>
+<span class="sourceLineNo">080</span> boolean openSuccessful = false;<a
name="line.80"></a>
+<span class="sourceLineNo">081</span> final String regionName =
regionInfo.getRegionNameAsString();<a name="line.81"></a>
+<span class="sourceLineNo">082</span> HRegion region = null;<a
name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span> try {<a name="line.84"></a>
+<span class="sourceLineNo">085</span> if (this.server.isStopped() ||
this.rsServices.isStopping()) {<a name="line.85"></a>
+<span class="sourceLineNo">086</span> return;<a name="line.86"></a>
+<span class="sourceLineNo">087</span> }<a name="line.87"></a>
+<span class="sourceLineNo">088</span> final String encodedName =
regionInfo.getEncodedName();<a name="line.88"></a>
+<span class="sourceLineNo">089</span><a name="line.89"></a>
+<span class="sourceLineNo">090</span> // 2 different difficult situations
can occur<a name="line.90"></a>
+<span class="sourceLineNo">091</span> // 1) The opening was cancelled.
This is an expected situation<a name="line.91"></a>
+<span class="sourceLineNo">092</span> // 2) The region is now marked as
online while we're suppose to open. This would be a bug.<a name="line.92"></a>
+<span class="sourceLineNo">093</span><a name="line.93"></a>
+<span class="sourceLineNo">094</span> // Check that this region is not
already online<a name="line.94"></a>
+<span class="sourceLineNo">095</span> if
(this.rsServices.getRegion(encodedName) != null) {<a name="line.95"></a>
+<span class="sourceLineNo">096</span> LOG.error("Region " + encodedName
+<a name="line.96"></a>
+<span class="sourceLineNo">097</span> " was already online when we
started processing the opening. " +<a name="line.97"></a>
+<span class="sourceLineNo">098</span> "Marking this new attempt as
failed");<a name="line.98"></a>
+<span class="sourceLineNo">099</span> return;<a name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span> // Check that we're still supposed
to open the region.<a name="line.102"></a>
+<span class="sourceLineNo">103</span> // If fails, just return. Someone
stole the region from under us.<a name="line.103"></a>
+<span class="sourceLineNo">104</span> if (!isRegionStillOpening()){<a
name="line.104"></a>
+<span class="sourceLineNo">105</span> LOG.error("Region " + encodedName
+ " opening cancelled");<a name="line.105"></a>
+<span class="sourceLineNo">106</span> return;<a name="line.106"></a>
+<span class="sourceLineNo">107</span> }<a name="line.107"></a>
+<span class="sourceLineNo">108</span><a name="line.108"></a>
+<span class="sourceLineNo">109</span> // Open region. After a successful
open, failures in subsequent<a name="line.109"></a>
+<span class="sourceLineNo">110</span> // processing needs to do a close
as part of cleanup.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> region = openRegion();<a
name="line.111"></a>
+<span class="sourceLineNo">112</span> if (region == null) {<a
name="line.112"></a>
+<span class="sourceLineNo">113</span> return;<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> if (!updateMeta(region,
masterSystemTime) || this.server.isStopped() ||<a name="line.116"></a>
+<span class="sourceLineNo">117</span> this.rsServices.isStopping())
{<a name="line.117"></a>
+<span class="sourceLineNo">118</span> return;<a name="line.118"></a>
+<span class="sourceLineNo">119</span> }<a name="line.119"></a>
+<span class="sourceLineNo">120</span><a name="line.120"></a>
+<span class="sourceLineNo">121</span> if (!isRegionStillOpening()) {<a
name="line.121"></a>
+<span class="sourceLineNo">122</span> return;<a name="line.122"></a>
+<span class="sourceLineNo">123</span> }<a name="line.123"></a>
+<span class="sourceLineNo">124</span><a name="line.124"></a>
+<span class="sourceLineNo">125</span> // Successful region open, and add
it to MutableOnlineRegions<a name="line.125"></a>
+<span class="sourceLineNo">126</span>
this.rsServices.addRegion(region);<a name="line.126"></a>
+<span class="sourceLineNo">127</span> openSuccessful = true;<a
name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span> // Done! Successful region open<a
name="line.129"></a>
+<span class="sourceLineNo">130</span> LOG.debug("Opened " + regionName +
" on " + this.server.getServerName());<a name="line.130"></a>
+<span class="sourceLineNo">131</span> } finally {<a name="line.131"></a>
+<span class="sourceLineNo">132</span> // Do all clean up here<a
name="line.132"></a>
+<span class="sourceLineNo">133</span> if (!openSuccessful) {<a
name="line.133"></a>
+<span class="sourceLineNo">134</span> doCleanUpOnFailedOpen(region);<a
name="line.134"></a>
+<span class="sourceLineNo">135</span> }<a name="line.135"></a>
+<span class="sourceLineNo">136</span> final Boolean current =
this.rsServices.getRegionsInTransitionInRS().<a name="line.136"></a>
+<span class="sourceLineNo">137</span>
remove(this.regionInfo.getEncodedNameAsBytes());<a name="line.137"></a>
+<span class="sourceLineNo">138</span><a name="line.138"></a>
+<span class="sourceLineNo">139</span> // Let's check if we have met a
race condition on open cancellation....<a name="line.139"></a>
+<span class="sourceLineNo">140</span> // A better solution would be to
not have any race condition.<a name="line.140"></a>
+<span class="sourceLineNo">141</span> //
this.rsServices.getRegionsInTransitionInRS().remove(<a name="line.141"></a>
+<span class="sourceLineNo">142</span> //
this.regionInfo.getEncodedNameAsBytes(), Boolean.TRUE);<a name="line.142"></a>
+<span class="sourceLineNo">143</span> // would help.<a
name="line.143"></a>
+<span class="sourceLineNo">144</span> if (openSuccessful) {<a
name="line.144"></a>
+<span class="sourceLineNo">145</span> if (current == null) { // Should
NEVER happen, but let's be paranoid.<a name="line.145"></a>
+<span class="sourceLineNo">146</span> LOG.error("Bad state: we've
just opened a region that was NOT in transition. Region="<a name="line.146"></a>
+<span class="sourceLineNo">147</span> + regionName);<a
name="line.147"></a>
+<span class="sourceLineNo">148</span> } else if
(Boolean.FALSE.equals(current)) { // Can happen, if we're<a name="line.148"></a>
+<span class="sourceLineNo">149</span>
// really unlucky.<a name="line.149"></a>
+<span class="sourceLineNo">150</span> LOG.error("Race condition:
we've finished to open a region, while a close was requested "<a
name="line.150"></a>
+<span class="sourceLineNo">151</span> + " on region=" +
regionName + ". It can be a critical error, as a region that"<a
name="line.151"></a>
+<span class="sourceLineNo">152</span> + " should be closed is now
opened. Closing it now");<a name="line.152"></a>
+<span class="sourceLineNo">153</span> cleanupFailedOpen(region);<a
name="line.153"></a>
+<span class="sourceLineNo">154</span> }<a name="line.154"></a>
+<span class="sourceLineNo">155</span> }<a name="line.155"></a>
+<span class="sourceLineNo">156</span> }<a name="line.156"></a>
+<span class="sourceLineNo">157</span> }<a name="line.157"></a>
+<span class="sourceLineNo">158</span><a name="line.158"></a>
+<span class="sourceLineNo">159</span> private void
doCleanUpOnFailedOpen(HRegion region)<a name="line.159"></a>
+<span class="sourceLineNo">160</span> throws IOException {<a
name="line.160"></a>
+<span class="sourceLineNo">161</span> try {<a name="line.161"></a>
+<span class="sourceLineNo">162</span> if (region != null) {<a
name="line.162"></a>
+<span class="sourceLineNo">163</span> cleanupFailedOpen(region);<a
name="line.163"></a>
+<span class="sourceLineNo">164</span> }<a name="line.164"></a>
+<span class="sourceLineNo">165</span> } finally {<a name="line.165"></a>
+<span class="sourceLineNo">166</span>
rsServices.reportRegionStateTransition(new RegionStateTransitionContext(<a
name="line.166"></a>
+<span class="sourceLineNo">167</span> TransitionCode.FAILED_OPEN,
HConstants.NO_SEQNUM, -1, regionInfo));<a name="line.167"></a>
+<span class="sourceLineNo">168</span> }<a name="line.168"></a>
+<span class="sourceLineNo">169</span> }<a name="line.169"></a>
+<span class="sourceLineNo">170</span><a name="line.170"></a>
+<span class="sourceLineNo">171</span> /**<a name="line.171"></a>
+<span class="sourceLineNo">172</span> * Update ZK or META. This can take a
while if for example the<a name="line.172"></a>
+<span class="sourceLineNo">173</span> * hbase:meta is not available -- if
server hosting hbase:meta crashed and we are<a name="line.173"></a>
+<span class="sourceLineNo">174</span> * waiting on it to come back -- so run
in a thread and keep updating znode<a name="line.174"></a>
+<span class="sourceLineNo">175</span> * state meantime so master doesn't
timeout our region-in-transition.<a name="line.175"></a>
+<span class="sourceLineNo">176</span> * Caller must cleanup region if this
fails.<a name="line.176"></a>
+<span class="sourceLineNo">177</span> */<a name="line.177"></a>
+<span class="sourceLineNo">178</span> private boolean updateMeta(final
HRegion r, long masterSystemTime) {<a name="line.178"></a>
+<span class="sourceLineNo">179</span> if (this.server.isStopped() ||
this.rsServices.isStopping()) {<a name="line.179"></a>
+<span class="sourceLineNo">180</span> return false;<a name="line.180"></a>
+<span class="sourceLineNo">181</span> }<a name="line.181"></a>
+<span class="sourceLineNo">182</span> // Object we do wait/notify on. Make
it boolean. If set, we're done.<a name="line.182"></a>
+<span class="sourceLineNo">183</span> // Else, wait.<a name="line.183"></a>
+<span class="sourceLineNo">184</span> final AtomicBoolean signaller = new
AtomicBoolean(false);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> PostOpenDeployTasksThread t = new
PostOpenDeployTasksThread(r,<a name="line.185"></a>
+<span class="sourceLineNo">186</span> this.server, this.rsServices,
signaller, masterSystemTime);<a name="line.186"></a>
+<span class="sourceLineNo">187</span> t.start();<a name="line.187"></a>
+<span class="sourceLineNo">188</span> // Post open deploy task:<a
name="line.188"></a>
+<span class="sourceLineNo">189</span> // meta => update meta location
in ZK<a name="line.189"></a>
+<span class="sourceLineNo">190</span> // other region => update meta<a
name="line.190"></a>
+<span class="sourceLineNo">191</span> while (!signaller.get() &&
t.isAlive() && !this.server.isStopped() &&<a
name="line.191"></a>
+<span class="sourceLineNo">192</span> !this.rsServices.isStopping()
&& isRegionStillOpening()) {<a name="line.192"></a>
+<span class="sourceLineNo">193</span> synchronized (signaller) {<a
name="line.193"></a>
+<span class="sourceLineNo">194</span> try {<a name="line.194"></a>
+<span class="sourceLineNo">195</span> // Wait for 10 seconds, so that
server shutdown<a name="line.195"></a>
+<span class="sourceLineNo">196</span> // won't take too long if this
thread happens to run.<a name="line.196"></a>
+<span class="sourceLineNo">197</span> if (!signaller.get())
signaller.wait(10000);<a name="line.197"></a>
+<span class="sourceLineNo">198</span> } catch (InterruptedException e)
{<a name="line.198"></a>
+<span class="sourceLineNo">199</span> // Go to the loop check.<a
name="line.199"></a>
+<span class="sourceLineNo">200</span> }<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> // Is thread still alive? We may
have left above loop because server is<a name="line.203"></a>
+<span class="sourceLineNo">204</span> // stopping or we timed out the edit.
Is so, interrupt it.<a name="line.204"></a>
+<span class="sourceLineNo">205</span> if (t.isAlive()) {<a
name="line.205"></a>
+<span class="sourceLineNo">206</span> if (!signaller.get()) {<a
name="line.206"></a>
+<span class="sourceLineNo">207</span> // Thread still running;
interrupt<a name="line.207"></a>
+<span class="sourceLineNo">208</span> LOG.debug("Interrupting thread "
+ t);<a name="line.208"></a>
+<span class="sourceLineNo">209</span> t.interrupt();<a
name="line.209"></a>
+<span class="sourceLineNo">210</span> }<a name="line.210"></a>
+<span class="sourceLineNo">211</span> try {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> t.join();<a name="line.212"></a>
+<span class="sourceLineNo">213</span> } catch (InterruptedException ie)
{<a name="line.213"></a>
+<span class="sourceLineNo">214</span> LOG.warn("Interrupted joining "
+<a name="line.214"></a>
+<span class="sourceLineNo">215</span>
r.getRegionInfo().getRegionNameAsString(), ie);<a name="line.215"></a>
+<span class="sourceLineNo">216</span>
Thread.currentThread().interrupt();<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><a name="line.219"></a>
+<span class="sourceLineNo">220</span> // Was there an exception opening the
region? This should trigger on<a name="line.220"></a>
+<span class="sourceLineNo">221</span> // InterruptedException too. If so,
we failed.<a name="line.221"></a>
+<span class="sourceLineNo">222</span> return (!Thread.interrupted()
&& t.getException() == null);<a name="line.222"></a>
+<span class="sourceLineNo">223</span> }<a name="line.223"></a>
+<span class="sourceLineNo">224</span><a name="line.224"></a>
+<span class="sourceLineNo">225</span> /**<a name="line.225"></a>
+<span class="sourceLineNo">226</span> * Thread to run region post open
tasks. Call {@link #getException()} after the thread finishes<a
name="line.226"></a>
+<span class="sourceLineNo">227</span> * to check for exceptions running
{@link RegionServerServices#postOpenDeployTasks(Region)}.<a name="line.227"></a>
+<span class="sourceLineNo">228</span> */<a name="line.228"></a>
+<span class="sourceLineNo">229</span> static class PostOpenDeployTasksThread
extends Thread {<a name="line.229"></a>
+<span class="sourceLineNo">230</span> private Throwable exception = null;<a
name="line.230"></a>
+<span class="sourceLineNo">231</span> private final Server server;<a
name="line.231"></a>
+<span class="sourceLineNo">232</span> private final RegionServerServices
services;<a name="line.232"></a>
+<span class="sourceLineNo">233</span> private final HRegion region;<a
name="line.233"></a>
+<span class="sourceLineNo">234</span> private final AtomicBoolean
signaller;<a name="line.234"></a>
+<span class="sourceLineNo">235</span> private final long
masterSystemTime;<a name="line.235"></a>
+<span class="sourceLineNo">236</span><a name="line.236"></a>
+<span class="sourceLineNo">237</span> PostOpenDeployTasksThread(final
HRegion region, final Server server,<a name="line.237"></a>
+<span class="sourceLineNo">238</span> final RegionServerServices
services, final AtomicBoolean signaller, long masterSystemTime) {<a
name="line.238"></a>
+<span class="sourceLineNo">239</span> super("PostOpenDeployTasks:" +
region.getRegionInfo().getEncodedName());<a name="line.239"></a>
+<span class="sourceLineNo">240</span> this.setDaemon(true);<a
name="line.240"></a>
+<span class="sourceLineNo">241</span> this.server = server;<a
name="line.241"></a>
+<span class="sourceLineNo">242</span> this.services = services;<a
name="line.242"></a>
+<span class="sourceLineNo">243</span> this.region = region;<a
name="line.243"></a>
+<span class="sourceLineNo">244</span> this.signaller = signaller;<a
name="line.244"></a>
+<span class="sourceLineNo">245</span> this.masterSystemTime =
masterSystemTime;<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> @Override<a name="line.248"></a>
+<span class="sourceLineNo">249</span> public void run() {<a
name="line.249"></a>
+<span class="sourceLineNo">250</span> try {<a name="line.250"></a>
+<span class="sourceLineNo">251</span>
this.services.postOpenDeployTasks(new PostOpenDeployContext(region,
masterSystemTime));<a name="line.251"></a>
+<span class="sourceLineNo">252</span> } catch (Throwable e) {<a
name="line.252"></a>
+<span class="sourceLineNo">253</span> String msg = "Exception running
postOpenDeployTasks; region=" +<a name="line.253"></a>
+<span class="sourceLineNo">254</span>
this.region.getRegionInfo().getEncodedName();<a name="line.254"></a>
+<span class="sourceLineNo">255</span> this.exception = e;<a
name="line.255"></a>
+<span class="sourceLineNo">256</span> if (e instanceof IOException<a
name="line.256"></a>
+<span class="sourceLineNo">257</span> &&
isRegionStillOpening(region.getRegionInfo(), services)) {<a name="line.257"></a>
+<span class="sourceLineNo">258</span> server.abort(msg, e);<a
name="line.258"></a>
+<span class="sourceLineNo">259</span> } else {<a name="line.259"></a>
+<span class="sourceLineNo">260</span> LOG.warn(msg, e);<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> // We're done. Set flag then wake
up anyone waiting on thread to complete.<a name="line.263"></a>
+<span class="sourceLineNo">264</span> this.signaller.set(true);<a
name="line.264"></a>
+<span class="sourceLineNo">265</span> synchronized (this.signaller) {<a
name="line.265"></a>
+<span class="sourceLineNo">266</span> this.signaller.notify();<a
name="line.266"></a>
+<span class="sourceLineNo">267</span> }<a name="line.267"></a>
+<span class="sourceLineNo">268</span> }<a name="line.268"></a>
+<span class="sourceLineNo">269</span><a name="line.269"></a>
+<span class="sourceLineNo">270</span> /**<a name="line.270"></a>
+<span class="sourceLineNo">271</span> * @return Null or the run exception;
call this method after thread is done.<a name="line.271"></a>
+<span class="sourceLineNo">272</span> */<a name="line.272"></a>
+<span class="sourceLineNo">273</span> Throwable getException() {<a
name="line.273"></a>
+<span class="sourceLineNo">274</span> return this.exception;<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><a name="line.277"></a>
+<span class="sourceLineNo">278</span> /**<a name="line.278"></a>
+<span class="sourceLineNo">279</span> * @return Instance of HRegion if
successful open else null.<a name="line.279"></a>
+<span class="sourceLineNo">280</span> */<a name="line.280"></a>
+<span class="sourceLineNo">281</span> private HRegion openRegion() {<a
name="line.281"></a>
+<span class="sourceLineNo">282</span> HRegion region = null;<a
name="line.282"></a>
+<span class="sourceLineNo">283</span> try {<a name="line.283"></a>
+<span class="sourceLineNo">284</span> // Instantiate the region. This
also periodically tickles OPENING<a name="line.284"></a>
+<span class="sourceLineNo">285</span> // state so master doesn't timeout
this region in transition.<a name="line.285"></a>
+<span class="sourceLineNo">286</span> region =
HRegion.openHRegion(this.regionInfo, this.htd,<a name="line.286"></a>
+<span class="sourceLineNo">287</span>
this.rsServices.getWAL(this.regionInfo),<a name="line.287"></a>
+<span class="sourceLineNo">288</span> this.server.getConfiguration(),<a
name="line.288"></a>
+<span class="sourceLineNo">289</span> this.rsServices,<a
name="line.289"></a>
+<span class="sourceLineNo">290</span> new CancelableProgressable() {<a
name="line.290"></a>
+<span class="sourceLineNo">291</span> @Override<a name="line.291"></a>
+<span class="sourceLineNo">292</span> public boolean progress() {<a
name="line.292"></a>
+<span class="sourceLineNo">293</span> if (!isRegionStillOpening())
{<a name="line.293"></a>
+<span class="sourceLineNo">294</span> LOG.warn("Open region
aborted since it isn't opening any more");<a name="line.294"></a>
+<span class="sourceLineNo">295</span> return false;<a
name="line.295"></a>
+<span class="sourceLineNo">296</span> }<a name="line.296"></a>
+<span class="sourceLineNo">297</span> return true;<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> } catch (Throwable t) {<a
name="line.300"></a>
+<span class="sourceLineNo">301</span> // We failed open. Our caller will
see the 'null' return value<a name="line.301"></a>
+<span class="sourceLineNo">302</span> // and transition the node back to
FAILED_OPEN. If that fails,<a name="line.302"></a>
+<span class="sourceLineNo">303</span> // we rely on the Timeout Monitor
in the master to reassign.<a name="line.303"></a>
+<span class="sourceLineNo">304</span> LOG.error(<a name="line.304"></a>
+<span class="sourceLineNo">305</span> "Failed open of region=" +
this.regionInfo.getRegionNameAsString(), t);<a name="line.305"></a>
+<span class="sourceLineNo">306</span> }<a name="line.306"></a>
+<span class="sourceLineNo">307</span> return region;<a name="line.307"></a>
+<span class="sourceLineNo">308</span> }<a name="line.308"></a>
+<span class="sourceLineNo">309</span><a name="line.309"></a>
+<span class="sourceLineNo">310</span> private void cleanupFailedOpen(final
HRegion region) throws IOException {<a name="line.310"></a>
+<span class="sourceLineNo">311</span> if (region != null) {<a
name="line.311"></a>
+<span class="sourceLineNo">312</span>
this.rsServices.removeRegion(region, null);<a name="line.312"></a>
+<span class="sourceLineNo">313</span> region.close();<a
name="line.313"></a>
+<span class="sourceLineNo">314</span> }<a name="line.314"></a>
+<span class="sourceLineNo">315</span> }<a name="line.315"></a>
+<span class="sourceLineNo">316</span><a name="line.316"></a>
+<span class="sourceLineNo">317</span> private static boolean
isRegionStillOpening(<a name="line.317"></a>
+<span class="sourceLineNo">318</span> RegionInfo regionInfo,
RegionServerServices rsServices) {<a name="line.318"></a>
+<span class="sourceLineNo">319</span> byte[] encodedName =
regionInfo.getEncodedNameAsBytes();<a name="line.319"></a>
+<span class="sourceLineNo">320</span> Boolean action =
rsServices.getRegionsInTransitionInRS().get(encodedName);<a name="line.320"></a>
+<span class="sourceLineNo">321</span> return Boolean.TRUE.equals(action);
// true means opening for RIT<a name="line.321"></a>
+<span class="sourceLineNo">322</span> }<a name="line.322"></a>
+<span class="sourceLineNo">323</span><a name="line.323"></a>
+<span class="sourceLineNo">324</span> private boolean isRegionStillOpening()
{<a name="line.324"></a>
+<span class="sourceLineNo">325</span> return
isRegionStillOpening(regionInfo, rsServices);<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>