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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.wal;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.InterruptedIOException;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.ArrayList;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Collections;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.List;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.Map;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.CompletionService;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.concurrent.ExecutorCompletionService;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.concurrent.ThreadPoolExecutor;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.concurrent.atomic.AtomicLong;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.monitoring.MonitoredTask;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.util.CancelableProgressable;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.util.Threads;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.slf4j.Logger;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hbase.thirdparty.com.google.common.collect.Lists;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hbase.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42">/**</span> |
| <span class="source-line-no">043</span><span id="line-43"> * The following class is an abstraction class to provide a common interface to support different</span> |
| <span class="source-line-no">044</span><span id="line-44"> * ways of consuming recovered edits.</span> |
| <span class="source-line-no">045</span><span id="line-45"> */</span> |
| <span class="source-line-no">046</span><span id="line-46">@InterfaceAudience.Private</span> |
| <span class="source-line-no">047</span><span id="line-47">abstract class OutputSink {</span> |
| <span class="source-line-no">048</span><span id="line-48"> private static final Logger LOG = LoggerFactory.getLogger(OutputSink.class);</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> private final WALSplitter.PipelineController controller;</span> |
| <span class="source-line-no">051</span><span id="line-51"> protected final EntryBuffers entryBuffers;</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> private final List<WriterThread> writerThreads = Lists.newArrayList();</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> protected final int numThreads;</span> |
| <span class="source-line-no">056</span><span id="line-56"></span> |
| <span class="source-line-no">057</span><span id="line-57"> protected CancelableProgressable reporter = null;</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> protected final AtomicLong totalSkippedEdits = new AtomicLong();</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> /**</span> |
| <span class="source-line-no">062</span><span id="line-62"> * List of all the files produced by this sink,</span> |
| <span class="source-line-no">063</span><span id="line-63"> * <p></span> |
| <span class="source-line-no">064</span><span id="line-64"> * Must be a synchronized list to avoid concurrency issues. CopyOnWriteArrayList is not a good</span> |
| <span class="source-line-no">065</span><span id="line-65"> * choice because all we do is add to the list and then return the result.</span> |
| <span class="source-line-no">066</span><span id="line-66"> */</span> |
| <span class="source-line-no">067</span><span id="line-67"> protected final List<Path> splits = Collections.synchronizedList(new ArrayList<>());</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> protected MonitoredTask status = null;</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> /**</span> |
| <span class="source-line-no">072</span><span id="line-72"> * Used when close this output sink.</span> |
| <span class="source-line-no">073</span><span id="line-73"> */</span> |
| <span class="source-line-no">074</span><span id="line-74"> protected final ThreadPoolExecutor closeThreadPool;</span> |
| <span class="source-line-no">075</span><span id="line-75"> protected final CompletionService<Void> closeCompletionService;</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> public OutputSink(WALSplitter.PipelineController controller, EntryBuffers entryBuffers,</span> |
| <span class="source-line-no">078</span><span id="line-78"> int numWriters) {</span> |
| <span class="source-line-no">079</span><span id="line-79"> this.numThreads = numWriters;</span> |
| <span class="source-line-no">080</span><span id="line-80"> this.controller = controller;</span> |
| <span class="source-line-no">081</span><span id="line-81"> this.entryBuffers = entryBuffers;</span> |
| <span class="source-line-no">082</span><span id="line-82"> this.closeThreadPool = Threads.getBoundedCachedThreadPool(numThreads, 30L, TimeUnit.SECONDS,</span> |
| <span class="source-line-no">083</span><span id="line-83"> new ThreadFactoryBuilder().setNameFormat("split-log-closeStream-pool-%d").setDaemon(true)</span> |
| <span class="source-line-no">084</span><span id="line-84"> .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());</span> |
| <span class="source-line-no">085</span><span id="line-85"> this.closeCompletionService = new ExecutorCompletionService<>(closeThreadPool);</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"></span> |
| <span class="source-line-no">088</span><span id="line-88"> void setReporter(CancelableProgressable reporter) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> this.reporter = reporter;</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> void setStatus(MonitoredTask status) {</span> |
| <span class="source-line-no">093</span><span id="line-93"> this.status = status;</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95"></span> |
| <span class="source-line-no">096</span><span id="line-96"> /**</span> |
| <span class="source-line-no">097</span><span id="line-97"> * Start the threads that will pump data from the entryBuffers to the output files.</span> |
| <span class="source-line-no">098</span><span id="line-98"> */</span> |
| <span class="source-line-no">099</span><span id="line-99"> void startWriterThreads() throws IOException {</span> |
| <span class="source-line-no">100</span><span id="line-100"> for (int i = 0; i < numThreads; i++) {</span> |
| <span class="source-line-no">101</span><span id="line-101"> WriterThread t = new WriterThread(controller, entryBuffers, this, i);</span> |
| <span class="source-line-no">102</span><span id="line-102"> t.start();</span> |
| <span class="source-line-no">103</span><span id="line-103"> writerThreads.add(t);</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"> }</span> |
| <span class="source-line-no">106</span><span id="line-106"></span> |
| <span class="source-line-no">107</span><span id="line-107"> /**</span> |
| <span class="source-line-no">108</span><span id="line-108"> * Wait for writer threads to dump all info to the sink</span> |
| <span class="source-line-no">109</span><span id="line-109"> * @return true when there is no error</span> |
| <span class="source-line-no">110</span><span id="line-110"> */</span> |
| <span class="source-line-no">111</span><span id="line-111"> boolean finishWriterThreads() throws IOException {</span> |
| <span class="source-line-no">112</span><span id="line-112"> LOG.debug("Waiting for split writer threads to finish");</span> |
| <span class="source-line-no">113</span><span id="line-113"> boolean progressFailed = false;</span> |
| <span class="source-line-no">114</span><span id="line-114"> for (WriterThread t : writerThreads) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> t.finish();</span> |
| <span class="source-line-no">116</span><span id="line-116"> }</span> |
| <span class="source-line-no">117</span><span id="line-117"></span> |
| <span class="source-line-no">118</span><span id="line-118"> for (WriterThread t : writerThreads) {</span> |
| <span class="source-line-no">119</span><span id="line-119"> if (!progressFailed && reporter != null && !reporter.progress()) {</span> |
| <span class="source-line-no">120</span><span id="line-120"> progressFailed = true;</span> |
| <span class="source-line-no">121</span><span id="line-121"> }</span> |
| <span class="source-line-no">122</span><span id="line-122"> try {</span> |
| <span class="source-line-no">123</span><span id="line-123"> t.join();</span> |
| <span class="source-line-no">124</span><span id="line-124"> } catch (InterruptedException ie) {</span> |
| <span class="source-line-no">125</span><span id="line-125"> IOException iie = new InterruptedIOException();</span> |
| <span class="source-line-no">126</span><span id="line-126"> iie.initCause(ie);</span> |
| <span class="source-line-no">127</span><span id="line-127"> throw iie;</span> |
| <span class="source-line-no">128</span><span id="line-128"> }</span> |
| <span class="source-line-no">129</span><span id="line-129"> }</span> |
| <span class="source-line-no">130</span><span id="line-130"> controller.checkForErrors();</span> |
| <span class="source-line-no">131</span><span id="line-131"> final String msg = this.writerThreads.size() + " split writer threads finished";</span> |
| <span class="source-line-no">132</span><span id="line-132"> LOG.info(msg);</span> |
| <span class="source-line-no">133</span><span id="line-133"> updateStatusWithMsg(msg);</span> |
| <span class="source-line-no">134</span><span id="line-134"> return (!progressFailed);</span> |
| <span class="source-line-no">135</span><span id="line-135"> }</span> |
| <span class="source-line-no">136</span><span id="line-136"></span> |
| <span class="source-line-no">137</span><span id="line-137"> long getTotalSkippedEdits() {</span> |
| <span class="source-line-no">138</span><span id="line-138"> return this.totalSkippedEdits.get();</span> |
| <span class="source-line-no">139</span><span id="line-139"> }</span> |
| <span class="source-line-no">140</span><span id="line-140"></span> |
| <span class="source-line-no">141</span><span id="line-141"> /** Returns the number of currently opened writers */</span> |
| <span class="source-line-no">142</span><span id="line-142"> abstract int getNumOpenWriters();</span> |
| <span class="source-line-no">143</span><span id="line-143"></span> |
| <span class="source-line-no">144</span><span id="line-144"> /**</span> |
| <span class="source-line-no">145</span><span id="line-145"> * @param buffer A buffer of some number of edits for a given region.</span> |
| <span class="source-line-no">146</span><span id="line-146"> * @throws IOException For any IO errors</span> |
| <span class="source-line-no">147</span><span id="line-147"> */</span> |
| <span class="source-line-no">148</span><span id="line-148"> abstract void append(EntryBuffers.RegionEntryBuffer buffer) throws IOException;</span> |
| <span class="source-line-no">149</span><span id="line-149"></span> |
| <span class="source-line-no">150</span><span id="line-150"> abstract List<Path> close() throws IOException;</span> |
| <span class="source-line-no">151</span><span id="line-151"></span> |
| <span class="source-line-no">152</span><span id="line-152"> /** Returns a map from encoded region ID to the number of edits written out for that region. */</span> |
| <span class="source-line-no">153</span><span id="line-153"> abstract Map<String, Long> getOutputCounts();</span> |
| <span class="source-line-no">154</span><span id="line-154"></span> |
| <span class="source-line-no">155</span><span id="line-155"> /** Returns number of regions we've recovered */</span> |
| <span class="source-line-no">156</span><span id="line-156"> abstract int getNumberOfRecoveredRegions();</span> |
| <span class="source-line-no">157</span><span id="line-157"></span> |
| <span class="source-line-no">158</span><span id="line-158"> /**</span> |
| <span class="source-line-no">159</span><span id="line-159"> * Some WALEdit's contain only KV's for account on what happened to a region. Not all sinks will</span> |
| <span class="source-line-no">160</span><span id="line-160"> * want to get all of those edits.</span> |
| <span class="source-line-no">161</span><span id="line-161"> * @return Return true if this sink wants to accept this region-level WALEdit.</span> |
| <span class="source-line-no">162</span><span id="line-162"> */</span> |
| <span class="source-line-no">163</span><span id="line-163"> abstract boolean keepRegionEvent(WAL.Entry entry);</span> |
| <span class="source-line-no">164</span><span id="line-164"></span> |
| <span class="source-line-no">165</span><span id="line-165"> /**</span> |
| <span class="source-line-no">166</span><span id="line-166"> * Set status message in {@link MonitoredTask} instance that is set in this OutputSink</span> |
| <span class="source-line-no">167</span><span id="line-167"> * @param msg message to update the status with</span> |
| <span class="source-line-no">168</span><span id="line-168"> */</span> |
| <span class="source-line-no">169</span><span id="line-169"> protected final void updateStatusWithMsg(String msg) {</span> |
| <span class="source-line-no">170</span><span id="line-170"> if (status != null) {</span> |
| <span class="source-line-no">171</span><span id="line-171"> status.setStatus(msg);</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173"> }</span> |
| <span class="source-line-no">174</span><span id="line-174"></span> |
| <span class="source-line-no">175</span><span id="line-175"> public static class WriterThread extends Thread {</span> |
| <span class="source-line-no">176</span><span id="line-176"> private volatile boolean shouldStop = false;</span> |
| <span class="source-line-no">177</span><span id="line-177"> private WALSplitter.PipelineController controller;</span> |
| <span class="source-line-no">178</span><span id="line-178"> private EntryBuffers entryBuffers;</span> |
| <span class="source-line-no">179</span><span id="line-179"> private OutputSink outputSink = null;</span> |
| <span class="source-line-no">180</span><span id="line-180"></span> |
| <span class="source-line-no">181</span><span id="line-181"> WriterThread(WALSplitter.PipelineController controller, EntryBuffers entryBuffers,</span> |
| <span class="source-line-no">182</span><span id="line-182"> OutputSink sink, int i) {</span> |
| <span class="source-line-no">183</span><span id="line-183"> super(Thread.currentThread().getName() + "-Writer-" + i);</span> |
| <span class="source-line-no">184</span><span id="line-184"> this.controller = controller;</span> |
| <span class="source-line-no">185</span><span id="line-185"> this.entryBuffers = entryBuffers;</span> |
| <span class="source-line-no">186</span><span id="line-186"> outputSink = sink;</span> |
| <span class="source-line-no">187</span><span id="line-187"> }</span> |
| <span class="source-line-no">188</span><span id="line-188"></span> |
| <span class="source-line-no">189</span><span id="line-189"> @Override</span> |
| <span class="source-line-no">190</span><span id="line-190"> public void run() {</span> |
| <span class="source-line-no">191</span><span id="line-191"> try {</span> |
| <span class="source-line-no">192</span><span id="line-192"> doRun();</span> |
| <span class="source-line-no">193</span><span id="line-193"> } catch (Throwable t) {</span> |
| <span class="source-line-no">194</span><span id="line-194"> LOG.error("Exiting thread", t);</span> |
| <span class="source-line-no">195</span><span id="line-195"> controller.writerThreadError(t);</span> |
| <span class="source-line-no">196</span><span id="line-196"> }</span> |
| <span class="source-line-no">197</span><span id="line-197"> }</span> |
| <span class="source-line-no">198</span><span id="line-198"></span> |
| <span class="source-line-no">199</span><span id="line-199"> private void doRun() throws IOException {</span> |
| <span class="source-line-no">200</span><span id="line-200"> LOG.trace("Writer thread starting");</span> |
| <span class="source-line-no">201</span><span id="line-201"> while (true) {</span> |
| <span class="source-line-no">202</span><span id="line-202"> EntryBuffers.RegionEntryBuffer buffer = entryBuffers.getChunkToWrite();</span> |
| <span class="source-line-no">203</span><span id="line-203"> if (buffer == null) {</span> |
| <span class="source-line-no">204</span><span id="line-204"> // No data currently available, wait on some more to show up</span> |
| <span class="source-line-no">205</span><span id="line-205"> synchronized (controller.dataAvailable) {</span> |
| <span class="source-line-no">206</span><span id="line-206"> if (shouldStop) {</span> |
| <span class="source-line-no">207</span><span id="line-207"> return;</span> |
| <span class="source-line-no">208</span><span id="line-208"> }</span> |
| <span class="source-line-no">209</span><span id="line-209"> try {</span> |
| <span class="source-line-no">210</span><span id="line-210"> controller.dataAvailable.wait(500);</span> |
| <span class="source-line-no">211</span><span id="line-211"> } catch (InterruptedException ie) {</span> |
| <span class="source-line-no">212</span><span id="line-212"> if (!shouldStop) {</span> |
| <span class="source-line-no">213</span><span id="line-213"> throw new RuntimeException(ie);</span> |
| <span class="source-line-no">214</span><span id="line-214"> }</span> |
| <span class="source-line-no">215</span><span id="line-215"> }</span> |
| <span class="source-line-no">216</span><span id="line-216"> }</span> |
| <span class="source-line-no">217</span><span id="line-217"> continue;</span> |
| <span class="source-line-no">218</span><span id="line-218"> }</span> |
| <span class="source-line-no">219</span><span id="line-219"></span> |
| <span class="source-line-no">220</span><span id="line-220"> assert buffer != null;</span> |
| <span class="source-line-no">221</span><span id="line-221"> try {</span> |
| <span class="source-line-no">222</span><span id="line-222"> writeBuffer(buffer);</span> |
| <span class="source-line-no">223</span><span id="line-223"> } finally {</span> |
| <span class="source-line-no">224</span><span id="line-224"> entryBuffers.doneWriting(buffer);</span> |
| <span class="source-line-no">225</span><span id="line-225"> }</span> |
| <span class="source-line-no">226</span><span id="line-226"> }</span> |
| <span class="source-line-no">227</span><span id="line-227"> }</span> |
| <span class="source-line-no">228</span><span id="line-228"></span> |
| <span class="source-line-no">229</span><span id="line-229"> private void writeBuffer(EntryBuffers.RegionEntryBuffer buffer) throws IOException {</span> |
| <span class="source-line-no">230</span><span id="line-230"> outputSink.append(buffer);</span> |
| <span class="source-line-no">231</span><span id="line-231"> }</span> |
| <span class="source-line-no">232</span><span id="line-232"></span> |
| <span class="source-line-no">233</span><span id="line-233"> private void finish() {</span> |
| <span class="source-line-no">234</span><span id="line-234"> synchronized (controller.dataAvailable) {</span> |
| <span class="source-line-no">235</span><span id="line-235"> shouldStop = true;</span> |
| <span class="source-line-no">236</span><span id="line-236"> controller.dataAvailable.notifyAll();</span> |
| <span class="source-line-no">237</span><span id="line-237"> }</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"> }</span> |
| <span class="source-line-no">240</span><span id="line-240">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
