http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c0571676/devapidocs/src-html/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.html index 9bbfc18..d22fccc 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.html @@ -54,299 +54,300 @@ <span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.procedure.Subprocedure;<a name="line.46"></a> <span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.procedure.SubprocedureFactory;<a name="line.47"></a> <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.RegionServerServices;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.zookeeper.KeeperException;<a name="line.53"></a> -<span class="sourceLineNo">054</span><a name="line.54"></a> -<span class="sourceLineNo">055</span>/**<a name="line.55"></a> -<span class="sourceLineNo">056</span> * This manager class handles flushing of the regions for table on a {@link HRegionServer}.<a name="line.56"></a> -<span class="sourceLineNo">057</span> */<a name="line.57"></a> -<span class="sourceLineNo">058</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)<a name="line.58"></a> -<span class="sourceLineNo">059</span>public class RegionServerFlushTableProcedureManager extends RegionServerProcedureManager {<a name="line.59"></a> -<span class="sourceLineNo">060</span> private static final Log LOG = LogFactory.getLog(RegionServerFlushTableProcedureManager.class);<a name="line.60"></a> -<span class="sourceLineNo">061</span><a name="line.61"></a> -<span class="sourceLineNo">062</span> private static final String CONCURENT_FLUSH_TASKS_KEY =<a name="line.62"></a> -<span class="sourceLineNo">063</span> "hbase.flush.procedure.region.concurrentTasks";<a name="line.63"></a> -<span class="sourceLineNo">064</span> private static final int DEFAULT_CONCURRENT_FLUSH_TASKS = 3;<a name="line.64"></a> -<span class="sourceLineNo">065</span><a name="line.65"></a> -<span class="sourceLineNo">066</span> public static final String FLUSH_REQUEST_THREADS_KEY =<a name="line.66"></a> -<span class="sourceLineNo">067</span> "hbase.flush.procedure.region.pool.threads";<a name="line.67"></a> -<span class="sourceLineNo">068</span> public static final int FLUSH_REQUEST_THREADS_DEFAULT = 10;<a name="line.68"></a> -<span class="sourceLineNo">069</span><a name="line.69"></a> -<span class="sourceLineNo">070</span> public static final String FLUSH_TIMEOUT_MILLIS_KEY =<a name="line.70"></a> -<span class="sourceLineNo">071</span> "hbase.flush.procedure.region.timeout";<a name="line.71"></a> -<span class="sourceLineNo">072</span> public static final long FLUSH_TIMEOUT_MILLIS_DEFAULT = 60000;<a name="line.72"></a> -<span class="sourceLineNo">073</span><a name="line.73"></a> -<span class="sourceLineNo">074</span> public static final String FLUSH_REQUEST_WAKE_MILLIS_KEY =<a name="line.74"></a> -<span class="sourceLineNo">075</span> "hbase.flush.procedure.region.wakefrequency";<a name="line.75"></a> -<span class="sourceLineNo">076</span> private static final long FLUSH_REQUEST_WAKE_MILLIS_DEFAULT = 500;<a name="line.76"></a> -<span class="sourceLineNo">077</span><a name="line.77"></a> -<span class="sourceLineNo">078</span> private RegionServerServices rss;<a name="line.78"></a> -<span class="sourceLineNo">079</span> private ProcedureMemberRpcs memberRpcs;<a name="line.79"></a> -<span class="sourceLineNo">080</span> private ProcedureMember member;<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> * Exposed for testing.<a name="line.83"></a> -<span class="sourceLineNo">084</span> * @param conf HBase configuration.<a name="line.84"></a> -<span class="sourceLineNo">085</span> * @param server region server.<a name="line.85"></a> -<span class="sourceLineNo">086</span> * @param memberRpc use specified memberRpc instance<a name="line.86"></a> -<span class="sourceLineNo">087</span> * @param procMember use specified ProcedureMember<a name="line.87"></a> -<span class="sourceLineNo">088</span> */<a name="line.88"></a> -<span class="sourceLineNo">089</span> RegionServerFlushTableProcedureManager(Configuration conf, HRegionServer server,<a name="line.89"></a> -<span class="sourceLineNo">090</span> ProcedureMemberRpcs memberRpc, ProcedureMember procMember) {<a name="line.90"></a> -<span class="sourceLineNo">091</span> this.rss = server;<a name="line.91"></a> -<span class="sourceLineNo">092</span> this.memberRpcs = memberRpc;<a name="line.92"></a> -<span class="sourceLineNo">093</span> this.member = procMember;<a name="line.93"></a> -<span class="sourceLineNo">094</span> }<a name="line.94"></a> -<span class="sourceLineNo">095</span><a name="line.95"></a> -<span class="sourceLineNo">096</span> public RegionServerFlushTableProcedureManager() {}<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> * Start accepting flush table requests.<a name="line.99"></a> -<span class="sourceLineNo">100</span> */<a name="line.100"></a> -<span class="sourceLineNo">101</span> @Override<a name="line.101"></a> -<span class="sourceLineNo">102</span> public void start() {<a name="line.102"></a> -<span class="sourceLineNo">103</span> LOG.debug("Start region server flush procedure manager " + rss.getServerName().toString());<a name="line.103"></a> -<span class="sourceLineNo">104</span> this.memberRpcs.start(rss.getServerName().toString(), member);<a name="line.104"></a> -<span class="sourceLineNo">105</span> }<a name="line.105"></a> -<span class="sourceLineNo">106</span><a name="line.106"></a> -<span class="sourceLineNo">107</span> /**<a name="line.107"></a> -<span class="sourceLineNo">108</span> * Close <tt>this</tt> and all running tasks<a name="line.108"></a> -<span class="sourceLineNo">109</span> * @param force forcefully stop all running tasks<a name="line.109"></a> -<span class="sourceLineNo">110</span> * @throws IOException<a name="line.110"></a> -<span class="sourceLineNo">111</span> */<a name="line.111"></a> -<span class="sourceLineNo">112</span> @Override<a name="line.112"></a> -<span class="sourceLineNo">113</span> public void stop(boolean force) throws IOException {<a name="line.113"></a> -<span class="sourceLineNo">114</span> String mode = force ? "abruptly" : "gracefully";<a name="line.114"></a> -<span class="sourceLineNo">115</span> LOG.info("Stopping region server flush procedure manager " + mode + ".");<a name="line.115"></a> -<span class="sourceLineNo">116</span><a name="line.116"></a> -<span class="sourceLineNo">117</span> try {<a name="line.117"></a> -<span class="sourceLineNo">118</span> this.member.close();<a name="line.118"></a> -<span class="sourceLineNo">119</span> } finally {<a name="line.119"></a> -<span class="sourceLineNo">120</span> this.memberRpcs.close();<a name="line.120"></a> -<span class="sourceLineNo">121</span> }<a name="line.121"></a> -<span class="sourceLineNo">122</span> }<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> * If in a running state, creates the specified subprocedure to flush table regions.<a name="line.125"></a> -<span class="sourceLineNo">126</span> *<a name="line.126"></a> -<span class="sourceLineNo">127</span> * Because this gets the local list of regions to flush and not the set the master had,<a name="line.127"></a> -<span class="sourceLineNo">128</span> * there is a possibility of a race where regions may be missed.<a name="line.128"></a> -<span class="sourceLineNo">129</span> *<a name="line.129"></a> -<span class="sourceLineNo">130</span> * @param table<a name="line.130"></a> -<span class="sourceLineNo">131</span> * @return Subprocedure to submit to the ProcedureMemeber.<a name="line.131"></a> -<span class="sourceLineNo">132</span> */<a name="line.132"></a> -<span class="sourceLineNo">133</span> public Subprocedure buildSubprocedure(String table) {<a name="line.133"></a> -<span class="sourceLineNo">134</span><a name="line.134"></a> -<span class="sourceLineNo">135</span> // don't run the subprocedure if the parent is stop(ping)<a name="line.135"></a> -<span class="sourceLineNo">136</span> if (rss.isStopping() || rss.isStopped()) {<a name="line.136"></a> -<span class="sourceLineNo">137</span> throw new IllegalStateException("Can't start flush region subprocedure on RS: "<a name="line.137"></a> -<span class="sourceLineNo">138</span> + rss.getServerName() + ", because stopping/stopped!");<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> // check to see if this server is hosting any regions for the table<a name="line.141"></a> -<span class="sourceLineNo">142</span> List<Region> involvedRegions;<a name="line.142"></a> -<span class="sourceLineNo">143</span> try {<a name="line.143"></a> -<span class="sourceLineNo">144</span> involvedRegions = getRegionsToFlush(table);<a name="line.144"></a> -<span class="sourceLineNo">145</span> } catch (IOException e1) {<a name="line.145"></a> -<span class="sourceLineNo">146</span> throw new IllegalStateException("Failed to figure out if there is region to flush.", e1);<a name="line.146"></a> -<span class="sourceLineNo">147</span> }<a name="line.147"></a> -<span class="sourceLineNo">148</span><a name="line.148"></a> -<span class="sourceLineNo">149</span> // We need to run the subprocedure even if we have no relevant regions. The coordinator<a name="line.149"></a> -<span class="sourceLineNo">150</span> // expects participation in the procedure and without sending message the master procedure<a name="line.150"></a> -<span class="sourceLineNo">151</span> // will hang and fail.<a name="line.151"></a> -<span class="sourceLineNo">152</span><a name="line.152"></a> -<span class="sourceLineNo">153</span> LOG.debug("Launching subprocedure to flush regions for " + table);<a name="line.153"></a> -<span class="sourceLineNo">154</span> ForeignExceptionDispatcher exnDispatcher = new ForeignExceptionDispatcher(table);<a name="line.154"></a> -<span class="sourceLineNo">155</span> Configuration conf = rss.getConfiguration();<a name="line.155"></a> -<span class="sourceLineNo">156</span> long timeoutMillis = conf.getLong(FLUSH_TIMEOUT_MILLIS_KEY,<a name="line.156"></a> -<span class="sourceLineNo">157</span> FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.157"></a> -<span class="sourceLineNo">158</span> long wakeMillis = conf.getLong(FLUSH_REQUEST_WAKE_MILLIS_KEY,<a name="line.158"></a> -<span class="sourceLineNo">159</span> FLUSH_REQUEST_WAKE_MILLIS_DEFAULT);<a name="line.159"></a> -<span class="sourceLineNo">160</span><a name="line.160"></a> -<span class="sourceLineNo">161</span> FlushTableSubprocedurePool taskManager =<a name="line.161"></a> -<span class="sourceLineNo">162</span> new FlushTableSubprocedurePool(rss.getServerName().toString(), conf, rss);<a name="line.162"></a> -<span class="sourceLineNo">163</span> return new FlushTableSubprocedure(member, exnDispatcher, wakeMillis,<a name="line.163"></a> -<span class="sourceLineNo">164</span> timeoutMillis, involvedRegions, table, taskManager);<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> * Get the list of regions to flush for the table on this server<a name="line.168"></a> -<span class="sourceLineNo">169</span> *<a name="line.169"></a> -<span class="sourceLineNo">170</span> * It is possible that if a region moves somewhere between the calls<a name="line.170"></a> -<span class="sourceLineNo">171</span> * we'll miss the region.<a name="line.171"></a> -<span class="sourceLineNo">172</span> *<a name="line.172"></a> -<span class="sourceLineNo">173</span> * @param table<a name="line.173"></a> -<span class="sourceLineNo">174</span> * @return the list of online regions. Empty list is returned if no regions.<a name="line.174"></a> -<span class="sourceLineNo">175</span> * @throws IOException<a name="line.175"></a> -<span class="sourceLineNo">176</span> */<a name="line.176"></a> -<span class="sourceLineNo">177</span> private List<Region> getRegionsToFlush(String table) throws IOException {<a name="line.177"></a> -<span class="sourceLineNo">178</span> return rss.getRegions(TableName.valueOf(table));<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 class FlushTableSubprocedureBuilder implements SubprocedureFactory {<a name="line.181"></a> -<span class="sourceLineNo">182</span><a name="line.182"></a> -<span class="sourceLineNo">183</span> @Override<a name="line.183"></a> -<span class="sourceLineNo">184</span> public Subprocedure buildSubprocedure(String name, byte[] data) {<a name="line.184"></a> -<span class="sourceLineNo">185</span> // The name of the procedure instance from the master is the table name.<a name="line.185"></a> -<span class="sourceLineNo">186</span> return RegionServerFlushTableProcedureManager.this.buildSubprocedure(name);<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> }<a name="line.189"></a> -<span class="sourceLineNo">190</span><a name="line.190"></a> -<span class="sourceLineNo">191</span> /**<a name="line.191"></a> -<span class="sourceLineNo">192</span> * We use the FlushTableSubprocedurePool, a class specific thread pool instead of<a name="line.192"></a> -<span class="sourceLineNo">193</span> * {@link org.apache.hadoop.hbase.executor.ExecutorService}.<a name="line.193"></a> -<span class="sourceLineNo">194</span> *<a name="line.194"></a> -<span class="sourceLineNo">195</span> * It uses a {@link java.util.concurrent.ExecutorCompletionService} which provides queuing of<a name="line.195"></a> -<span class="sourceLineNo">196</span> * completed tasks which lets us efficiently cancel pending tasks upon the earliest operation<a name="line.196"></a> -<span class="sourceLineNo">197</span> * failures.<a name="line.197"></a> -<span class="sourceLineNo">198</span> */<a name="line.198"></a> -<span class="sourceLineNo">199</span> static class FlushTableSubprocedurePool {<a name="line.199"></a> -<span class="sourceLineNo">200</span> private final Abortable abortable;<a name="line.200"></a> -<span class="sourceLineNo">201</span> private final ExecutorCompletionService<Void> taskPool;<a name="line.201"></a> -<span class="sourceLineNo">202</span> private final ThreadPoolExecutor executor;<a name="line.202"></a> -<span class="sourceLineNo">203</span> private volatile boolean stopped;<a name="line.203"></a> -<span class="sourceLineNo">204</span> private final List<Future<Void>> futures = new ArrayList<>();<a name="line.204"></a> -<span class="sourceLineNo">205</span> private final String name;<a name="line.205"></a> -<span class="sourceLineNo">206</span><a name="line.206"></a> -<span class="sourceLineNo">207</span> FlushTableSubprocedurePool(String name, Configuration conf, Abortable abortable) {<a name="line.207"></a> -<span class="sourceLineNo">208</span> this.abortable = abortable;<a name="line.208"></a> -<span class="sourceLineNo">209</span> // configure the executor service<a name="line.209"></a> -<span class="sourceLineNo">210</span> long keepAlive = conf.getLong(<a name="line.210"></a> -<span class="sourceLineNo">211</span> RegionServerFlushTableProcedureManager.FLUSH_TIMEOUT_MILLIS_KEY,<a name="line.211"></a> -<span class="sourceLineNo">212</span> RegionServerFlushTableProcedureManager.FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.212"></a> -<span class="sourceLineNo">213</span> int threads = conf.getInt(CONCURENT_FLUSH_TASKS_KEY, DEFAULT_CONCURRENT_FLUSH_TASKS);<a name="line.213"></a> -<span class="sourceLineNo">214</span> this.name = name;<a name="line.214"></a> -<span class="sourceLineNo">215</span> executor = new ThreadPoolExecutor(threads, threads, keepAlive, TimeUnit.MILLISECONDS,<a name="line.215"></a> -<span class="sourceLineNo">216</span> new LinkedBlockingQueue<>(), new DaemonThreadFactory("rs("<a name="line.216"></a> -<span class="sourceLineNo">217</span> + name + ")-flush-proc-pool"));<a name="line.217"></a> -<span class="sourceLineNo">218</span> executor.allowCoreThreadTimeOut(true);<a name="line.218"></a> -<span class="sourceLineNo">219</span> taskPool = new ExecutorCompletionService<>(executor);<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> boolean hasTasks() {<a name="line.222"></a> -<span class="sourceLineNo">223</span> return futures.size() != 0;<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> /**<a name="line.226"></a> -<span class="sourceLineNo">227</span> * Submit a task to the pool.<a name="line.227"></a> -<span class="sourceLineNo">228</span> *<a name="line.228"></a> -<span class="sourceLineNo">229</span> * NOTE: all must be submitted before you can safely {@link #waitForOutstandingTasks()}.<a name="line.229"></a> -<span class="sourceLineNo">230</span> */<a name="line.230"></a> -<span class="sourceLineNo">231</span> void submitTask(final Callable<Void> task) {<a name="line.231"></a> -<span class="sourceLineNo">232</span> Future<Void> f = this.taskPool.submit(task);<a name="line.232"></a> -<span class="sourceLineNo">233</span> futures.add(f);<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> /**<a name="line.236"></a> -<span class="sourceLineNo">237</span> * Wait for all of the currently outstanding tasks submitted via {@link #submitTask(Callable)}.<a name="line.237"></a> -<span class="sourceLineNo">238</span> * This *must* be called after all tasks are submitted via submitTask.<a name="line.238"></a> -<span class="sourceLineNo">239</span> *<a name="line.239"></a> -<span class="sourceLineNo">240</span> * @return <tt>true</tt> on success, <tt>false</tt> otherwise<a name="line.240"></a> -<span class="sourceLineNo">241</span> * @throws InterruptedException<a name="line.241"></a> -<span class="sourceLineNo">242</span> */<a name="line.242"></a> -<span class="sourceLineNo">243</span> boolean waitForOutstandingTasks() throws ForeignException, InterruptedException {<a name="line.243"></a> -<span class="sourceLineNo">244</span> LOG.debug("Waiting for local region flush to finish.");<a name="line.244"></a> -<span class="sourceLineNo">245</span><a name="line.245"></a> -<span class="sourceLineNo">246</span> int sz = futures.size();<a name="line.246"></a> -<span class="sourceLineNo">247</span> try {<a name="line.247"></a> -<span class="sourceLineNo">248</span> // Using the completion service to process the futures.<a name="line.248"></a> -<span class="sourceLineNo">249</span> for (int i = 0; i < sz; i++) {<a name="line.249"></a> -<span class="sourceLineNo">250</span> Future<Void> f = taskPool.take();<a name="line.250"></a> -<span class="sourceLineNo">251</span> f.get();<a name="line.251"></a> -<span class="sourceLineNo">252</span> if (!futures.remove(f)) {<a name="line.252"></a> -<span class="sourceLineNo">253</span> LOG.warn("unexpected future" + f);<a name="line.253"></a> -<span class="sourceLineNo">254</span> }<a name="line.254"></a> -<span class="sourceLineNo">255</span> LOG.debug("Completed " + (i+1) + "/" + sz + " local region flush tasks.");<a name="line.255"></a> -<span class="sourceLineNo">256</span> }<a name="line.256"></a> -<span class="sourceLineNo">257</span> LOG.debug("Completed " + sz + " local region flush tasks.");<a name="line.257"></a> -<span class="sourceLineNo">258</span> return true;<a name="line.258"></a> -<span class="sourceLineNo">259</span> } catch (InterruptedException e) {<a name="line.259"></a> -<span class="sourceLineNo">260</span> LOG.warn("Got InterruptedException in FlushSubprocedurePool", e);<a name="line.260"></a> -<span class="sourceLineNo">261</span> if (!stopped) {<a name="line.261"></a> -<span class="sourceLineNo">262</span> Thread.currentThread().interrupt();<a name="line.262"></a> -<span class="sourceLineNo">263</span> throw new ForeignException("FlushSubprocedurePool", e);<a name="line.263"></a> -<span class="sourceLineNo">264</span> }<a name="line.264"></a> -<span class="sourceLineNo">265</span> // we are stopped so we can just exit.<a name="line.265"></a> -<span class="sourceLineNo">266</span> } catch (ExecutionException e) {<a name="line.266"></a> -<span class="sourceLineNo">267</span> Throwable cause = e.getCause();<a name="line.267"></a> -<span class="sourceLineNo">268</span> if (cause instanceof ForeignException) {<a name="line.268"></a> -<span class="sourceLineNo">269</span> LOG.warn("Rethrowing ForeignException from FlushSubprocedurePool", e);<a name="line.269"></a> -<span class="sourceLineNo">270</span> throw (ForeignException)e.getCause();<a name="line.270"></a> -<span class="sourceLineNo">271</span> } else if (cause instanceof DroppedSnapshotException) {<a name="line.271"></a> -<span class="sourceLineNo">272</span> // we have to abort the region server according to contract of flush<a name="line.272"></a> -<span class="sourceLineNo">273</span> abortable.abort("Received DroppedSnapshotException, aborting", cause);<a name="line.273"></a> -<span class="sourceLineNo">274</span> }<a name="line.274"></a> -<span class="sourceLineNo">275</span> LOG.warn("Got Exception in FlushSubprocedurePool", e);<a name="line.275"></a> -<span class="sourceLineNo">276</span> throw new ForeignException(name, e.getCause());<a name="line.276"></a> -<span class="sourceLineNo">277</span> } finally {<a name="line.277"></a> -<span class="sourceLineNo">278</span> cancelTasks();<a name="line.278"></a> -<span class="sourceLineNo">279</span> }<a name="line.279"></a> -<span class="sourceLineNo">280</span> return false;<a name="line.280"></a> -<span class="sourceLineNo">281</span> }<a name="line.281"></a> -<span class="sourceLineNo">282</span><a name="line.282"></a> -<span class="sourceLineNo">283</span> /**<a name="line.283"></a> -<span class="sourceLineNo">284</span> * This attempts to cancel out all pending and in progress tasks. Does not interrupt the running<a name="line.284"></a> -<span class="sourceLineNo">285</span> * tasks itself. An ongoing HRegion.flush() should not be interrupted (see HBASE-13877).<a name="line.285"></a> -<span class="sourceLineNo">286</span> * @throws InterruptedException<a name="line.286"></a> -<span class="sourceLineNo">287</span> */<a name="line.287"></a> -<span class="sourceLineNo">288</span> void cancelTasks() throws InterruptedException {<a name="line.288"></a> -<span class="sourceLineNo">289</span> Collection<Future<Void>> tasks = futures;<a name="line.289"></a> -<span class="sourceLineNo">290</span> LOG.debug("cancelling " + tasks.size() + " flush region tasks " + name);<a name="line.290"></a> -<span class="sourceLineNo">291</span> for (Future<Void> f: tasks) {<a name="line.291"></a> -<span class="sourceLineNo">292</span> f.cancel(false);<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> // evict remaining tasks and futures from taskPool.<a name="line.295"></a> -<span class="sourceLineNo">296</span> futures.clear();<a name="line.296"></a> -<span class="sourceLineNo">297</span> while (taskPool.poll() != null) {}<a name="line.297"></a> -<span class="sourceLineNo">298</span> stop();<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> /**<a name="line.301"></a> -<span class="sourceLineNo">302</span> * Gracefully shutdown the thread pool. An ongoing HRegion.flush() should not be<a name="line.302"></a> -<span class="sourceLineNo">303</span> * interrupted (see HBASE-13877)<a name="line.303"></a> -<span class="sourceLineNo">304</span> */<a name="line.304"></a> -<span class="sourceLineNo">305</span> void stop() {<a name="line.305"></a> -<span class="sourceLineNo">306</span> if (this.stopped) return;<a name="line.306"></a> -<span class="sourceLineNo">307</span><a name="line.307"></a> -<span class="sourceLineNo">308</span> this.stopped = true;<a name="line.308"></a> -<span class="sourceLineNo">309</span> this.executor.shutdown();<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> /**<a name="line.313"></a> -<span class="sourceLineNo">314</span> * Initialize this region server flush procedure manager<a name="line.314"></a> -<span class="sourceLineNo">315</span> * Uses a zookeeper based member controller.<a name="line.315"></a> -<span class="sourceLineNo">316</span> * @param rss region server<a name="line.316"></a> -<span class="sourceLineNo">317</span> * @throws KeeperException if the zookeeper cannot be reached<a name="line.317"></a> -<span class="sourceLineNo">318</span> */<a name="line.318"></a> -<span class="sourceLineNo">319</span> @Override<a name="line.319"></a> -<span class="sourceLineNo">320</span> public void initialize(RegionServerServices rss) throws KeeperException {<a name="line.320"></a> -<span class="sourceLineNo">321</span> this.rss = rss;<a name="line.321"></a> -<span class="sourceLineNo">322</span> ZooKeeperWatcher zkw = rss.getZooKeeper();<a name="line.322"></a> -<span class="sourceLineNo">323</span> this.memberRpcs = new ZKProcedureMemberRpcs(zkw,<a name="line.323"></a> -<span class="sourceLineNo">324</span> MasterFlushTableProcedureManager.FLUSH_TABLE_PROCEDURE_SIGNATURE);<a name="line.324"></a> -<span class="sourceLineNo">325</span><a name="line.325"></a> -<span class="sourceLineNo">326</span> Configuration conf = rss.getConfiguration();<a name="line.326"></a> -<span class="sourceLineNo">327</span> long keepAlive = conf.getLong(FLUSH_TIMEOUT_MILLIS_KEY, FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.327"></a> -<span class="sourceLineNo">328</span> int opThreads = conf.getInt(FLUSH_REQUEST_THREADS_KEY, FLUSH_REQUEST_THREADS_DEFAULT);<a name="line.328"></a> -<span class="sourceLineNo">329</span><a name="line.329"></a> -<span class="sourceLineNo">330</span> // create the actual flush table procedure member<a name="line.330"></a> -<span class="sourceLineNo">331</span> ThreadPoolExecutor pool = ProcedureMember.defaultPool(rss.getServerName().toString(),<a name="line.331"></a> -<span class="sourceLineNo">332</span> opThreads, keepAlive);<a name="line.332"></a> -<span class="sourceLineNo">333</span> this.member = new ProcedureMember(memberRpcs, pool, new FlushTableSubprocedureBuilder());<a name="line.333"></a> -<span class="sourceLineNo">334</span> }<a name="line.334"></a> -<span class="sourceLineNo">335</span><a name="line.335"></a> -<span class="sourceLineNo">336</span> @Override<a name="line.336"></a> -<span class="sourceLineNo">337</span> public String getProcedureSignature() {<a name="line.337"></a> -<span class="sourceLineNo">338</span> return MasterFlushTableProcedureManager.FLUSH_TABLE_PROCEDURE_SIGNATURE;<a name="line.338"></a> -<span class="sourceLineNo">339</span> }<a name="line.339"></a> -<span class="sourceLineNo">340</span><a name="line.340"></a> -<span class="sourceLineNo">341</span>}<a name="line.341"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.HRegion;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.RegionServerServices;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.zookeeper.KeeperException;<a name="line.54"></a> +<span class="sourceLineNo">055</span><a name="line.55"></a> +<span class="sourceLineNo">056</span>/**<a name="line.56"></a> +<span class="sourceLineNo">057</span> * This manager class handles flushing of the regions for table on a {@link HRegionServer}.<a name="line.57"></a> +<span class="sourceLineNo">058</span> */<a name="line.58"></a> +<span class="sourceLineNo">059</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)<a name="line.59"></a> +<span class="sourceLineNo">060</span>public class RegionServerFlushTableProcedureManager extends RegionServerProcedureManager {<a name="line.60"></a> +<span class="sourceLineNo">061</span> private static final Log LOG = LogFactory.getLog(RegionServerFlushTableProcedureManager.class);<a name="line.61"></a> +<span class="sourceLineNo">062</span><a name="line.62"></a> +<span class="sourceLineNo">063</span> private static final String CONCURENT_FLUSH_TASKS_KEY =<a name="line.63"></a> +<span class="sourceLineNo">064</span> "hbase.flush.procedure.region.concurrentTasks";<a name="line.64"></a> +<span class="sourceLineNo">065</span> private static final int DEFAULT_CONCURRENT_FLUSH_TASKS = 3;<a name="line.65"></a> +<span class="sourceLineNo">066</span><a name="line.66"></a> +<span class="sourceLineNo">067</span> public static final String FLUSH_REQUEST_THREADS_KEY =<a name="line.67"></a> +<span class="sourceLineNo">068</span> "hbase.flush.procedure.region.pool.threads";<a name="line.68"></a> +<span class="sourceLineNo">069</span> public static final int FLUSH_REQUEST_THREADS_DEFAULT = 10;<a name="line.69"></a> +<span class="sourceLineNo">070</span><a name="line.70"></a> +<span class="sourceLineNo">071</span> public static final String FLUSH_TIMEOUT_MILLIS_KEY =<a name="line.71"></a> +<span class="sourceLineNo">072</span> "hbase.flush.procedure.region.timeout";<a name="line.72"></a> +<span class="sourceLineNo">073</span> public static final long FLUSH_TIMEOUT_MILLIS_DEFAULT = 60000;<a name="line.73"></a> +<span class="sourceLineNo">074</span><a name="line.74"></a> +<span class="sourceLineNo">075</span> public static final String FLUSH_REQUEST_WAKE_MILLIS_KEY =<a name="line.75"></a> +<span class="sourceLineNo">076</span> "hbase.flush.procedure.region.wakefrequency";<a name="line.76"></a> +<span class="sourceLineNo">077</span> private static final long FLUSH_REQUEST_WAKE_MILLIS_DEFAULT = 500;<a name="line.77"></a> +<span class="sourceLineNo">078</span><a name="line.78"></a> +<span class="sourceLineNo">079</span> private RegionServerServices rss;<a name="line.79"></a> +<span class="sourceLineNo">080</span> private ProcedureMemberRpcs memberRpcs;<a name="line.80"></a> +<span class="sourceLineNo">081</span> private ProcedureMember member;<a name="line.81"></a> +<span class="sourceLineNo">082</span><a name="line.82"></a> +<span class="sourceLineNo">083</span> /**<a name="line.83"></a> +<span class="sourceLineNo">084</span> * Exposed for testing.<a name="line.84"></a> +<span class="sourceLineNo">085</span> * @param conf HBase configuration.<a name="line.85"></a> +<span class="sourceLineNo">086</span> * @param server region server.<a name="line.86"></a> +<span class="sourceLineNo">087</span> * @param memberRpc use specified memberRpc instance<a name="line.87"></a> +<span class="sourceLineNo">088</span> * @param procMember use specified ProcedureMember<a name="line.88"></a> +<span class="sourceLineNo">089</span> */<a name="line.89"></a> +<span class="sourceLineNo">090</span> RegionServerFlushTableProcedureManager(Configuration conf, HRegionServer server,<a name="line.90"></a> +<span class="sourceLineNo">091</span> ProcedureMemberRpcs memberRpc, ProcedureMember procMember) {<a name="line.91"></a> +<span class="sourceLineNo">092</span> this.rss = server;<a name="line.92"></a> +<span class="sourceLineNo">093</span> this.memberRpcs = memberRpc;<a name="line.93"></a> +<span class="sourceLineNo">094</span> this.member = procMember;<a name="line.94"></a> +<span class="sourceLineNo">095</span> }<a name="line.95"></a> +<span class="sourceLineNo">096</span><a name="line.96"></a> +<span class="sourceLineNo">097</span> public RegionServerFlushTableProcedureManager() {}<a name="line.97"></a> +<span class="sourceLineNo">098</span><a name="line.98"></a> +<span class="sourceLineNo">099</span> /**<a name="line.99"></a> +<span class="sourceLineNo">100</span> * Start accepting flush table requests.<a name="line.100"></a> +<span class="sourceLineNo">101</span> */<a name="line.101"></a> +<span class="sourceLineNo">102</span> @Override<a name="line.102"></a> +<span class="sourceLineNo">103</span> public void start() {<a name="line.103"></a> +<span class="sourceLineNo">104</span> LOG.debug("Start region server flush procedure manager " + rss.getServerName().toString());<a name="line.104"></a> +<span class="sourceLineNo">105</span> this.memberRpcs.start(rss.getServerName().toString(), member);<a name="line.105"></a> +<span class="sourceLineNo">106</span> }<a name="line.106"></a> +<span class="sourceLineNo">107</span><a name="line.107"></a> +<span class="sourceLineNo">108</span> /**<a name="line.108"></a> +<span class="sourceLineNo">109</span> * Close <tt>this</tt> and all running tasks<a name="line.109"></a> +<span class="sourceLineNo">110</span> * @param force forcefully stop all running tasks<a name="line.110"></a> +<span class="sourceLineNo">111</span> * @throws IOException<a name="line.111"></a> +<span class="sourceLineNo">112</span> */<a name="line.112"></a> +<span class="sourceLineNo">113</span> @Override<a name="line.113"></a> +<span class="sourceLineNo">114</span> public void stop(boolean force) throws IOException {<a name="line.114"></a> +<span class="sourceLineNo">115</span> String mode = force ? "abruptly" : "gracefully";<a name="line.115"></a> +<span class="sourceLineNo">116</span> LOG.info("Stopping region server flush procedure manager " + mode + ".");<a name="line.116"></a> +<span class="sourceLineNo">117</span><a name="line.117"></a> +<span class="sourceLineNo">118</span> try {<a name="line.118"></a> +<span class="sourceLineNo">119</span> this.member.close();<a name="line.119"></a> +<span class="sourceLineNo">120</span> } finally {<a name="line.120"></a> +<span class="sourceLineNo">121</span> this.memberRpcs.close();<a name="line.121"></a> +<span class="sourceLineNo">122</span> }<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> /**<a name="line.125"></a> +<span class="sourceLineNo">126</span> * If in a running state, creates the specified subprocedure to flush table regions.<a name="line.126"></a> +<span class="sourceLineNo">127</span> *<a name="line.127"></a> +<span class="sourceLineNo">128</span> * Because this gets the local list of regions to flush and not the set the master had,<a name="line.128"></a> +<span class="sourceLineNo">129</span> * there is a possibility of a race where regions may be missed.<a name="line.129"></a> +<span class="sourceLineNo">130</span> *<a name="line.130"></a> +<span class="sourceLineNo">131</span> * @param table<a name="line.131"></a> +<span class="sourceLineNo">132</span> * @return Subprocedure to submit to the ProcedureMemeber.<a name="line.132"></a> +<span class="sourceLineNo">133</span> */<a name="line.133"></a> +<span class="sourceLineNo">134</span> public Subprocedure buildSubprocedure(String table) {<a name="line.134"></a> +<span class="sourceLineNo">135</span><a name="line.135"></a> +<span class="sourceLineNo">136</span> // don't run the subprocedure if the parent is stop(ping)<a name="line.136"></a> +<span class="sourceLineNo">137</span> if (rss.isStopping() || rss.isStopped()) {<a name="line.137"></a> +<span class="sourceLineNo">138</span> throw new IllegalStateException("Can't start flush region subprocedure on RS: "<a name="line.138"></a> +<span class="sourceLineNo">139</span> + rss.getServerName() + ", because stopping/stopped!");<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> // check to see if this server is hosting any regions for the table<a name="line.142"></a> +<span class="sourceLineNo">143</span> List<HRegion> involvedRegions;<a name="line.143"></a> +<span class="sourceLineNo">144</span> try {<a name="line.144"></a> +<span class="sourceLineNo">145</span> involvedRegions = getRegionsToFlush(table);<a name="line.145"></a> +<span class="sourceLineNo">146</span> } catch (IOException e1) {<a name="line.146"></a> +<span class="sourceLineNo">147</span> throw new IllegalStateException("Failed to figure out if there is region to flush.", e1);<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> // We need to run the subprocedure even if we have no relevant regions. The coordinator<a name="line.150"></a> +<span class="sourceLineNo">151</span> // expects participation in the procedure and without sending message the master procedure<a name="line.151"></a> +<span class="sourceLineNo">152</span> // will hang and fail.<a name="line.152"></a> +<span class="sourceLineNo">153</span><a name="line.153"></a> +<span class="sourceLineNo">154</span> LOG.debug("Launching subprocedure to flush regions for " + table);<a name="line.154"></a> +<span class="sourceLineNo">155</span> ForeignExceptionDispatcher exnDispatcher = new ForeignExceptionDispatcher(table);<a name="line.155"></a> +<span class="sourceLineNo">156</span> Configuration conf = rss.getConfiguration();<a name="line.156"></a> +<span class="sourceLineNo">157</span> long timeoutMillis = conf.getLong(FLUSH_TIMEOUT_MILLIS_KEY,<a name="line.157"></a> +<span class="sourceLineNo">158</span> FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.158"></a> +<span class="sourceLineNo">159</span> long wakeMillis = conf.getLong(FLUSH_REQUEST_WAKE_MILLIS_KEY,<a name="line.159"></a> +<span class="sourceLineNo">160</span> FLUSH_REQUEST_WAKE_MILLIS_DEFAULT);<a name="line.160"></a> +<span class="sourceLineNo">161</span><a name="line.161"></a> +<span class="sourceLineNo">162</span> FlushTableSubprocedurePool taskManager =<a name="line.162"></a> +<span class="sourceLineNo">163</span> new FlushTableSubprocedurePool(rss.getServerName().toString(), conf, rss);<a name="line.163"></a> +<span class="sourceLineNo">164</span> return new FlushTableSubprocedure(member, exnDispatcher, wakeMillis,<a name="line.164"></a> +<span class="sourceLineNo">165</span> timeoutMillis, involvedRegions, table, taskManager);<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> * Get the list of regions to flush for the table on this server<a name="line.169"></a> +<span class="sourceLineNo">170</span> *<a name="line.170"></a> +<span class="sourceLineNo">171</span> * It is possible that if a region moves somewhere between the calls<a name="line.171"></a> +<span class="sourceLineNo">172</span> * we'll miss the region.<a name="line.172"></a> +<span class="sourceLineNo">173</span> *<a name="line.173"></a> +<span class="sourceLineNo">174</span> * @param table<a name="line.174"></a> +<span class="sourceLineNo">175</span> * @return the list of online regions. Empty list is returned if no regions.<a name="line.175"></a> +<span class="sourceLineNo">176</span> * @throws IOException<a name="line.176"></a> +<span class="sourceLineNo">177</span> */<a name="line.177"></a> +<span class="sourceLineNo">178</span> private List<HRegion> getRegionsToFlush(String table) throws IOException {<a name="line.178"></a> +<span class="sourceLineNo">179</span> return (List<HRegion>) rss.getRegions(TableName.valueOf(table));<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 class FlushTableSubprocedureBuilder implements SubprocedureFactory {<a name="line.182"></a> +<span class="sourceLineNo">183</span><a name="line.183"></a> +<span class="sourceLineNo">184</span> @Override<a name="line.184"></a> +<span class="sourceLineNo">185</span> public Subprocedure buildSubprocedure(String name, byte[] data) {<a name="line.185"></a> +<span class="sourceLineNo">186</span> // The name of the procedure instance from the master is the table name.<a name="line.186"></a> +<span class="sourceLineNo">187</span> return RegionServerFlushTableProcedureManager.this.buildSubprocedure(name);<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> }<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> * We use the FlushTableSubprocedurePool, a class specific thread pool instead of<a name="line.193"></a> +<span class="sourceLineNo">194</span> * {@link org.apache.hadoop.hbase.executor.ExecutorService}.<a name="line.194"></a> +<span class="sourceLineNo">195</span> *<a name="line.195"></a> +<span class="sourceLineNo">196</span> * It uses a {@link java.util.concurrent.ExecutorCompletionService} which provides queuing of<a name="line.196"></a> +<span class="sourceLineNo">197</span> * completed tasks which lets us efficiently cancel pending tasks upon the earliest operation<a name="line.197"></a> +<span class="sourceLineNo">198</span> * failures.<a name="line.198"></a> +<span class="sourceLineNo">199</span> */<a name="line.199"></a> +<span class="sourceLineNo">200</span> static class FlushTableSubprocedurePool {<a name="line.200"></a> +<span class="sourceLineNo">201</span> private final Abortable abortable;<a name="line.201"></a> +<span class="sourceLineNo">202</span> private final ExecutorCompletionService<Void> taskPool;<a name="line.202"></a> +<span class="sourceLineNo">203</span> private final ThreadPoolExecutor executor;<a name="line.203"></a> +<span class="sourceLineNo">204</span> private volatile boolean stopped;<a name="line.204"></a> +<span class="sourceLineNo">205</span> private final List<Future<Void>> futures = new ArrayList<>();<a name="line.205"></a> +<span class="sourceLineNo">206</span> private final String name;<a name="line.206"></a> +<span class="sourceLineNo">207</span><a name="line.207"></a> +<span class="sourceLineNo">208</span> FlushTableSubprocedurePool(String name, Configuration conf, Abortable abortable) {<a name="line.208"></a> +<span class="sourceLineNo">209</span> this.abortable = abortable;<a name="line.209"></a> +<span class="sourceLineNo">210</span> // configure the executor service<a name="line.210"></a> +<span class="sourceLineNo">211</span> long keepAlive = conf.getLong(<a name="line.211"></a> +<span class="sourceLineNo">212</span> RegionServerFlushTableProcedureManager.FLUSH_TIMEOUT_MILLIS_KEY,<a name="line.212"></a> +<span class="sourceLineNo">213</span> RegionServerFlushTableProcedureManager.FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.213"></a> +<span class="sourceLineNo">214</span> int threads = conf.getInt(CONCURENT_FLUSH_TASKS_KEY, DEFAULT_CONCURRENT_FLUSH_TASKS);<a name="line.214"></a> +<span class="sourceLineNo">215</span> this.name = name;<a name="line.215"></a> +<span class="sourceLineNo">216</span> executor = new ThreadPoolExecutor(threads, threads, keepAlive, TimeUnit.MILLISECONDS,<a name="line.216"></a> +<span class="sourceLineNo">217</span> new LinkedBlockingQueue<>(), new DaemonThreadFactory("rs("<a name="line.217"></a> +<span class="sourceLineNo">218</span> + name + ")-flush-proc-pool"));<a name="line.218"></a> +<span class="sourceLineNo">219</span> executor.allowCoreThreadTimeOut(true);<a name="line.219"></a> +<span class="sourceLineNo">220</span> taskPool = new ExecutorCompletionService<>(executor);<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> boolean hasTasks() {<a name="line.223"></a> +<span class="sourceLineNo">224</span> return futures.size() != 0;<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> /**<a name="line.227"></a> +<span class="sourceLineNo">228</span> * Submit a task to the pool.<a name="line.228"></a> +<span class="sourceLineNo">229</span> *<a name="line.229"></a> +<span class="sourceLineNo">230</span> * NOTE: all must be submitted before you can safely {@link #waitForOutstandingTasks()}.<a name="line.230"></a> +<span class="sourceLineNo">231</span> */<a name="line.231"></a> +<span class="sourceLineNo">232</span> void submitTask(final Callable<Void> task) {<a name="line.232"></a> +<span class="sourceLineNo">233</span> Future<Void> f = this.taskPool.submit(task);<a name="line.233"></a> +<span class="sourceLineNo">234</span> futures.add(f);<a name="line.234"></a> +<span class="sourceLineNo">235</span> }<a name="line.235"></a> +<span class="sourceLineNo">236</span><a name="line.236"></a> +<span class="sourceLineNo">237</span> /**<a name="line.237"></a> +<span class="sourceLineNo">238</span> * Wait for all of the currently outstanding tasks submitted via {@link #submitTask(Callable)}.<a name="line.238"></a> +<span class="sourceLineNo">239</span> * This *must* be called after all tasks are submitted via submitTask.<a name="line.239"></a> +<span class="sourceLineNo">240</span> *<a name="line.240"></a> +<span class="sourceLineNo">241</span> * @return <tt>true</tt> on success, <tt>false</tt> otherwise<a name="line.241"></a> +<span class="sourceLineNo">242</span> * @throws InterruptedException<a name="line.242"></a> +<span class="sourceLineNo">243</span> */<a name="line.243"></a> +<span class="sourceLineNo">244</span> boolean waitForOutstandingTasks() throws ForeignException, InterruptedException {<a name="line.244"></a> +<span class="sourceLineNo">245</span> LOG.debug("Waiting for local region flush to finish.");<a name="line.245"></a> +<span class="sourceLineNo">246</span><a name="line.246"></a> +<span class="sourceLineNo">247</span> int sz = futures.size();<a name="line.247"></a> +<span class="sourceLineNo">248</span> try {<a name="line.248"></a> +<span class="sourceLineNo">249</span> // Using the completion service to process the futures.<a name="line.249"></a> +<span class="sourceLineNo">250</span> for (int i = 0; i < sz; i++) {<a name="line.250"></a> +<span class="sourceLineNo">251</span> Future<Void> f = taskPool.take();<a name="line.251"></a> +<span class="sourceLineNo">252</span> f.get();<a name="line.252"></a> +<span class="sourceLineNo">253</span> if (!futures.remove(f)) {<a name="line.253"></a> +<span class="sourceLineNo">254</span> LOG.warn("unexpected future" + f);<a name="line.254"></a> +<span class="sourceLineNo">255</span> }<a name="line.255"></a> +<span class="sourceLineNo">256</span> LOG.debug("Completed " + (i+1) + "/" + sz + " local region flush tasks.");<a name="line.256"></a> +<span class="sourceLineNo">257</span> }<a name="line.257"></a> +<span class="sourceLineNo">258</span> LOG.debug("Completed " + sz + " local region flush tasks.");<a name="line.258"></a> +<span class="sourceLineNo">259</span> return true;<a name="line.259"></a> +<span class="sourceLineNo">260</span> } catch (InterruptedException e) {<a name="line.260"></a> +<span class="sourceLineNo">261</span> LOG.warn("Got InterruptedException in FlushSubprocedurePool", e);<a name="line.261"></a> +<span class="sourceLineNo">262</span> if (!stopped) {<a name="line.262"></a> +<span class="sourceLineNo">263</span> Thread.currentThread().interrupt();<a name="line.263"></a> +<span class="sourceLineNo">264</span> throw new ForeignException("FlushSubprocedurePool", e);<a name="line.264"></a> +<span class="sourceLineNo">265</span> }<a name="line.265"></a> +<span class="sourceLineNo">266</span> // we are stopped so we can just exit.<a name="line.266"></a> +<span class="sourceLineNo">267</span> } catch (ExecutionException e) {<a name="line.267"></a> +<span class="sourceLineNo">268</span> Throwable cause = e.getCause();<a name="line.268"></a> +<span class="sourceLineNo">269</span> if (cause instanceof ForeignException) {<a name="line.269"></a> +<span class="sourceLineNo">270</span> LOG.warn("Rethrowing ForeignException from FlushSubprocedurePool", e);<a name="line.270"></a> +<span class="sourceLineNo">271</span> throw (ForeignException)e.getCause();<a name="line.271"></a> +<span class="sourceLineNo">272</span> } else if (cause instanceof DroppedSnapshotException) {<a name="line.272"></a> +<span class="sourceLineNo">273</span> // we have to abort the region server according to contract of flush<a name="line.273"></a> +<span class="sourceLineNo">274</span> abortable.abort("Received DroppedSnapshotException, aborting", cause);<a name="line.274"></a> +<span class="sourceLineNo">275</span> }<a name="line.275"></a> +<span class="sourceLineNo">276</span> LOG.warn("Got Exception in FlushSubprocedurePool", e);<a name="line.276"></a> +<span class="sourceLineNo">277</span> throw new ForeignException(name, e.getCause());<a name="line.277"></a> +<span class="sourceLineNo">278</span> } finally {<a name="line.278"></a> +<span class="sourceLineNo">279</span> cancelTasks();<a name="line.279"></a> +<span class="sourceLineNo">280</span> }<a name="line.280"></a> +<span class="sourceLineNo">281</span> return false;<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> /**<a name="line.284"></a> +<span class="sourceLineNo">285</span> * This attempts to cancel out all pending and in progress tasks. Does not interrupt the running<a name="line.285"></a> +<span class="sourceLineNo">286</span> * tasks itself. An ongoing HRegion.flush() should not be interrupted (see HBASE-13877).<a name="line.286"></a> +<span class="sourceLineNo">287</span> * @throws InterruptedException<a name="line.287"></a> +<span class="sourceLineNo">288</span> */<a name="line.288"></a> +<span class="sourceLineNo">289</span> void cancelTasks() throws InterruptedException {<a name="line.289"></a> +<span class="sourceLineNo">290</span> Collection<Future<Void>> tasks = futures;<a name="line.290"></a> +<span class="sourceLineNo">291</span> LOG.debug("cancelling " + tasks.size() + " flush region tasks " + name);<a name="line.291"></a> +<span class="sourceLineNo">292</span> for (Future<Void> f: tasks) {<a name="line.292"></a> +<span class="sourceLineNo">293</span> f.cancel(false);<a name="line.293"></a> +<span class="sourceLineNo">294</span> }<a name="line.294"></a> +<span class="sourceLineNo">295</span><a name="line.295"></a> +<span class="sourceLineNo">296</span> // evict remaining tasks and futures from taskPool.<a name="line.296"></a> +<span class="sourceLineNo">297</span> futures.clear();<a name="line.297"></a> +<span class="sourceLineNo">298</span> while (taskPool.poll() != null) {}<a name="line.298"></a> +<span class="sourceLineNo">299</span> stop();<a name="line.299"></a> +<span class="sourceLineNo">300</span> }<a name="line.300"></a> +<span class="sourceLineNo">301</span><a name="line.301"></a> +<span class="sourceLineNo">302</span> /**<a name="line.302"></a> +<span class="sourceLineNo">303</span> * Gracefully shutdown the thread pool. An ongoing HRegion.flush() should not be<a name="line.303"></a> +<span class="sourceLineNo">304</span> * interrupted (see HBASE-13877)<a name="line.304"></a> +<span class="sourceLineNo">305</span> */<a name="line.305"></a> +<span class="sourceLineNo">306</span> void stop() {<a name="line.306"></a> +<span class="sourceLineNo">307</span> if (this.stopped) return;<a name="line.307"></a> +<span class="sourceLineNo">308</span><a name="line.308"></a> +<span class="sourceLineNo">309</span> this.stopped = true;<a name="line.309"></a> +<span class="sourceLineNo">310</span> this.executor.shutdown();<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><a name="line.313"></a> +<span class="sourceLineNo">314</span> /**<a name="line.314"></a> +<span class="sourceLineNo">315</span> * Initialize this region server flush procedure manager<a name="line.315"></a> +<span class="sourceLineNo">316</span> * Uses a zookeeper based member controller.<a name="line.316"></a> +<span class="sourceLineNo">317</span> * @param rss region server<a name="line.317"></a> +<span class="sourceLineNo">318</span> * @throws KeeperException if the zookeeper cannot be reached<a name="line.318"></a> +<span class="sourceLineNo">319</span> */<a name="line.319"></a> +<span class="sourceLineNo">320</span> @Override<a name="line.320"></a> +<span class="sourceLineNo">321</span> public void initialize(RegionServerServices rss) throws KeeperException {<a name="line.321"></a> +<span class="sourceLineNo">322</span> this.rss = rss;<a name="line.322"></a> +<span class="sourceLineNo">323</span> ZooKeeperWatcher zkw = rss.getZooKeeper();<a name="line.323"></a> +<span class="sourceLineNo">324</span> this.memberRpcs = new ZKProcedureMemberRpcs(zkw,<a name="line.324"></a> +<span class="sourceLineNo">325</span> MasterFlushTableProcedureManager.FLUSH_TABLE_PROCEDURE_SIGNATURE);<a name="line.325"></a> +<span class="sourceLineNo">326</span><a name="line.326"></a> +<span class="sourceLineNo">327</span> Configuration conf = rss.getConfiguration();<a name="line.327"></a> +<span class="sourceLineNo">328</span> long keepAlive = conf.getLong(FLUSH_TIMEOUT_MILLIS_KEY, FLUSH_TIMEOUT_MILLIS_DEFAULT);<a name="line.328"></a> +<span class="sourceLineNo">329</span> int opThreads = conf.getInt(FLUSH_REQUEST_THREADS_KEY, FLUSH_REQUEST_THREADS_DEFAULT);<a name="line.329"></a> +<span class="sourceLineNo">330</span><a name="line.330"></a> +<span class="sourceLineNo">331</span> // create the actual flush table procedure member<a name="line.331"></a> +<span class="sourceLineNo">332</span> ThreadPoolExecutor pool = ProcedureMember.defaultPool(rss.getServerName().toString(),<a name="line.332"></a> +<span class="sourceLineNo">333</span> opThreads, keepAlive);<a name="line.333"></a> +<span class="sourceLineNo">334</span> this.member = new ProcedureMember(memberRpcs, pool, new FlushTableSubprocedureBuilder());<a name="line.334"></a> +<span class="sourceLineNo">335</span> }<a name="line.335"></a> +<span class="sourceLineNo">336</span><a name="line.336"></a> +<span class="sourceLineNo">337</span> @Override<a name="line.337"></a> +<span class="sourceLineNo">338</span> public String getProcedureSignature() {<a name="line.338"></a> +<span class="sourceLineNo">339</span> return MasterFlushTableProcedureManager.FLUSH_TABLE_PROCEDURE_SIGNATURE;<a name="line.339"></a> +<span class="sourceLineNo">340</span> }<a name="line.340"></a> +<span class="sourceLineNo">341</span><a name="line.341"></a> +<span class="sourceLineNo">342</span>}<a name="line.342"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c0571676/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactedHFilesDischarger.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactedHFilesDischarger.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactedHFilesDischarger.html index 3318d3e..d0327fb 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactedHFilesDischarger.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/CompactedHFilesDischarger.html @@ -94,13 +94,13 @@ <span class="sourceLineNo">086</span> // Noop if rss is null. This will never happen in a normal condition except for cases<a name="line.86"></a> <span class="sourceLineNo">087</span> // when the test case is not spinning up a cluster<a name="line.87"></a> <span class="sourceLineNo">088</span> if (regionServerServices == null) return;<a name="line.88"></a> -<span class="sourceLineNo">089</span> List<Region> onlineRegions = regionServerServices.getRegions();<a name="line.89"></a> +<span class="sourceLineNo">089</span> List<HRegion> onlineRegions = (List<HRegion>) regionServerServices.getRegions();<a name="line.89"></a> <span class="sourceLineNo">090</span> if (onlineRegions == null) return;<a name="line.90"></a> -<span class="sourceLineNo">091</span> for (Region region : onlineRegions) {<a name="line.91"></a> +<span class="sourceLineNo">091</span> for (HRegion region : onlineRegions) {<a name="line.91"></a> <span class="sourceLineNo">092</span> if (LOG.isTraceEnabled()) {<a name="line.92"></a> <span class="sourceLineNo">093</span> LOG.trace("Started compacted hfiles cleaner on " + region.getRegionInfo());<a name="line.93"></a> <span class="sourceLineNo">094</span> }<a name="line.94"></a> -<span class="sourceLineNo">095</span> for (HStore store : ((HRegion) region).getStores()) {<a name="line.95"></a> +<span class="sourceLineNo">095</span> for (HStore store : region.getStores()) {<a name="line.95"></a> <span class="sourceLineNo">096</span> try {<a name="line.96"></a> <span class="sourceLineNo">097</span> if (useExecutor && regionServerServices != null) {<a name="line.97"></a> <span class="sourceLineNo">098</span> CompactedHFilesDischargeHandler handler = new CompactedHFilesDischargeHandler(<a name="line.98"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c0571676/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/FlushRequester.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/FlushRequester.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/FlushRequester.html index 6104b1f..1ccae65 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/FlushRequester.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/FlushRequester.html @@ -41,7 +41,7 @@ <span class="sourceLineNo">033</span> * @param forceFlushAllStores whether we want to flush all stores. e.g., when request from log<a name="line.33"></a> <span class="sourceLineNo">034</span> * rolling.<a name="line.34"></a> <span class="sourceLineNo">035</span> */<a name="line.35"></a> -<span class="sourceLineNo">036</span> void requestFlush(Region region, boolean forceFlushAllStores);<a name="line.36"></a> +<span class="sourceLineNo">036</span> void requestFlush(HRegion region, boolean forceFlushAllStores);<a name="line.36"></a> <span class="sourceLineNo">037</span><a name="line.37"></a> <span class="sourceLineNo">038</span> /**<a name="line.38"></a> <span class="sourceLineNo">039</span> * Tell the listener the cache needs to be flushed after a delay<a name="line.39"></a> @@ -51,7 +51,7 @@ <span class="sourceLineNo">043</span> * @param forceFlushAllStores whether we want to flush all stores. e.g., when request from log<a name="line.43"></a> <span class="sourceLineNo">044</span> * rolling.<a name="line.44"></a> <span class="sourceLineNo">045</span> */<a name="line.45"></a> -<span class="sourceLineNo">046</span> void requestDelayedFlush(Region region, long delay, boolean forceFlushAllStores);<a name="line.46"></a> +<span class="sourceLineNo">046</span> void requestDelayedFlush(HRegion region, long delay, boolean forceFlushAllStores);<a name="line.46"></a> <span class="sourceLineNo">047</span><a name="line.47"></a> <span class="sourceLineNo">048</span> /**<a name="line.48"></a> <span class="sourceLineNo">049</span> * Register a FlushRequestListener<a name="line.49"></a>
