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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.procedure2;</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.util.concurrent.DelayQueue;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.procedure2.util.DelayedUtil;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.procedure2.util.DelayedUtil.DelayedWithTimeout;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.slf4j.Logger;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">027</span><span id="line-27"></span> |
| <span class="source-line-no">028</span><span id="line-28">/**</span> |
| <span class="source-line-no">029</span><span id="line-29"> * Runs task on a period such as check for stuck workers.</span> |
| <span class="source-line-no">030</span><span id="line-30"> * @see InlineChore</span> |
| <span class="source-line-no">031</span><span id="line-31"> */</span> |
| <span class="source-line-no">032</span><span id="line-32">@InterfaceAudience.Private</span> |
| <span class="source-line-no">033</span><span id="line-33">class TimeoutExecutorThread<TEnvironment> extends StoppableThread {</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35"> private static final Logger LOG = LoggerFactory.getLogger(TimeoutExecutorThread.class);</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37"> private final ProcedureExecutor<TEnvironment> executor;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39"> private final DelayQueue<DelayedWithTimeout> queue = new DelayQueue<>();</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41"> public TimeoutExecutorThread(ProcedureExecutor<TEnvironment> executor, ThreadGroup group,</span> |
| <span class="source-line-no">042</span><span id="line-42"> String name) {</span> |
| <span class="source-line-no">043</span><span id="line-43"> super(group, name);</span> |
| <span class="source-line-no">044</span><span id="line-44"> setDaemon(true);</span> |
| <span class="source-line-no">045</span><span id="line-45"> this.executor = executor;</span> |
| <span class="source-line-no">046</span><span id="line-46"> }</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> @Override</span> |
| <span class="source-line-no">049</span><span id="line-49"> public void sendStopSignal() {</span> |
| <span class="source-line-no">050</span><span id="line-50"> queue.add(DelayedUtil.DELAYED_POISON);</span> |
| <span class="source-line-no">051</span><span id="line-51"> }</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> @Override</span> |
| <span class="source-line-no">054</span><span id="line-54"> public void run() {</span> |
| <span class="source-line-no">055</span><span id="line-55"> while (executor.isRunning()) {</span> |
| <span class="source-line-no">056</span><span id="line-56"> final DelayedWithTimeout task = DelayedUtil.takeWithoutInterrupt(queue, 20, TimeUnit.SECONDS);</span> |
| <span class="source-line-no">057</span><span id="line-57"> if (task == null || task == DelayedUtil.DELAYED_POISON) {</span> |
| <span class="source-line-no">058</span><span id="line-58"> // the executor may be shutting down,</span> |
| <span class="source-line-no">059</span><span id="line-59"> // and the task is just the shutdown request</span> |
| <span class="source-line-no">060</span><span id="line-60"> continue;</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"> LOG.trace("Executing {}", task);</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> // execute the task</span> |
| <span class="source-line-no">065</span><span id="line-65"> if (task instanceof InlineChore) {</span> |
| <span class="source-line-no">066</span><span id="line-66"> execInlineChore((InlineChore) task);</span> |
| <span class="source-line-no">067</span><span id="line-67"> } else if (task instanceof DelayedProcedure) {</span> |
| <span class="source-line-no">068</span><span id="line-68"> execDelayedProcedure((DelayedProcedure<TEnvironment>) task);</span> |
| <span class="source-line-no">069</span><span id="line-69"> } else {</span> |
| <span class="source-line-no">070</span><span id="line-70"> LOG.error("CODE-BUG unknown timeout task type {}", task);</span> |
| <span class="source-line-no">071</span><span id="line-71"> }</span> |
| <span class="source-line-no">072</span><span id="line-72"> }</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> public void add(InlineChore chore) {</span> |
| <span class="source-line-no">076</span><span id="line-76"> chore.refreshTimeout();</span> |
| <span class="source-line-no">077</span><span id="line-77"> queue.add(chore);</span> |
| <span class="source-line-no">078</span><span id="line-78"> }</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> public void add(Procedure<TEnvironment> procedure) {</span> |
| <span class="source-line-no">081</span><span id="line-81"> if (procedure.getTimeout() > 0) {</span> |
| <span class="source-line-no">082</span><span id="line-82"> LOG.info("ADDED {}; timeout={}, timestamp={}", procedure, procedure.getTimeout(),</span> |
| <span class="source-line-no">083</span><span id="line-83"> procedure.getTimeoutTimestamp());</span> |
| <span class="source-line-no">084</span><span id="line-84"> queue.add(new DelayedProcedure<>(procedure));</span> |
| <span class="source-line-no">085</span><span id="line-85"> } else {</span> |
| <span class="source-line-no">086</span><span id="line-86"> LOG.info("Got negative timeout {} for {}, skip adding", procedure.getTimeout(), procedure);</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88"> }</span> |
| <span class="source-line-no">089</span><span id="line-89"></span> |
| <span class="source-line-no">090</span><span id="line-90"> public boolean remove(Procedure<TEnvironment> procedure) {</span> |
| <span class="source-line-no">091</span><span id="line-91"> return queue.remove(new DelayedProcedure<>(procedure));</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> private void execInlineChore(InlineChore chore) {</span> |
| <span class="source-line-no">095</span><span id="line-95"> chore.run();</span> |
| <span class="source-line-no">096</span><span id="line-96"> add(chore);</span> |
| <span class="source-line-no">097</span><span id="line-97"> }</span> |
| <span class="source-line-no">098</span><span id="line-98"></span> |
| <span class="source-line-no">099</span><span id="line-99"> private void execDelayedProcedure(DelayedProcedure<TEnvironment> delayed) {</span> |
| <span class="source-line-no">100</span><span id="line-100"> // TODO: treat this as a normal procedure, add it to the scheduler and</span> |
| <span class="source-line-no">101</span><span id="line-101"> // let one of the workers handle it.</span> |
| <span class="source-line-no">102</span><span id="line-102"> // Today we consider ProcedureInMemoryChore as InlineChores</span> |
| <span class="source-line-no">103</span><span id="line-103"> Procedure<TEnvironment> procedure = delayed.getObject();</span> |
| <span class="source-line-no">104</span><span id="line-104"> if (procedure instanceof ProcedureInMemoryChore) {</span> |
| <span class="source-line-no">105</span><span id="line-105"> executeInMemoryChore((ProcedureInMemoryChore<TEnvironment>) procedure);</span> |
| <span class="source-line-no">106</span><span id="line-106"> // if the procedure is in a waiting state again, put it back in the queue</span> |
| <span class="source-line-no">107</span><span id="line-107"> procedure.updateTimestamp();</span> |
| <span class="source-line-no">108</span><span id="line-108"> if (procedure.isWaiting()) {</span> |
| <span class="source-line-no">109</span><span id="line-109"> delayed.setTimeout(procedure.getTimeoutTimestamp());</span> |
| <span class="source-line-no">110</span><span id="line-110"> queue.add(delayed);</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"> } else {</span> |
| <span class="source-line-no">113</span><span id="line-113"> executeTimedoutProcedure(procedure);</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"> }</span> |
| <span class="source-line-no">116</span><span id="line-116"></span> |
| <span class="source-line-no">117</span><span id="line-117"> private void executeInMemoryChore(ProcedureInMemoryChore<TEnvironment> chore) {</span> |
| <span class="source-line-no">118</span><span id="line-118"> if (!chore.isWaiting()) {</span> |
| <span class="source-line-no">119</span><span id="line-119"> return;</span> |
| <span class="source-line-no">120</span><span id="line-120"> }</span> |
| <span class="source-line-no">121</span><span id="line-121"></span> |
| <span class="source-line-no">122</span><span id="line-122"> // The ProcedureInMemoryChore is a special case, and it acts as a chore.</span> |
| <span class="source-line-no">123</span><span id="line-123"> // instead of bringing the Chore class in, we reuse this timeout thread for</span> |
| <span class="source-line-no">124</span><span id="line-124"> // this special case.</span> |
| <span class="source-line-no">125</span><span id="line-125"> try {</span> |
| <span class="source-line-no">126</span><span id="line-126"> chore.periodicExecute(executor.getEnvironment());</span> |
| <span class="source-line-no">127</span><span id="line-127"> } catch (Throwable e) {</span> |
| <span class="source-line-no">128</span><span id="line-128"> LOG.error("Ignoring {} exception: {}", chore, e.getMessage(), e);</span> |
| <span class="source-line-no">129</span><span id="line-129"> }</span> |
| <span class="source-line-no">130</span><span id="line-130"> }</span> |
| <span class="source-line-no">131</span><span id="line-131"></span> |
| <span class="source-line-no">132</span><span id="line-132"> protected void executeTimedoutProcedure(Procedure<TEnvironment> proc) {</span> |
| <span class="source-line-no">133</span><span id="line-133"> // The procedure received a timeout. if the procedure itself does not handle it,</span> |
| <span class="source-line-no">134</span><span id="line-134"> // call abort() and add the procedure back in the queue for rollback.</span> |
| <span class="source-line-no">135</span><span id="line-135"> if (proc.setTimeoutFailure(executor.getEnvironment())) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> long rootProcId = executor.getRootProcedureId(proc);</span> |
| <span class="source-line-no">137</span><span id="line-137"> RootProcedureState<TEnvironment> procStack = executor.getProcStack(rootProcId);</span> |
| <span class="source-line-no">138</span><span id="line-138"> procStack.abort();</span> |
| <span class="source-line-no">139</span><span id="line-139"> executor.getStore().update(proc);</span> |
| <span class="source-line-no">140</span><span id="line-140"> executor.getScheduler().addFront(proc);</span> |
| <span class="source-line-no">141</span><span id="line-141"> }</span> |
| <span class="source-line-no">142</span><span id="line-142"> }</span> |
| <span class="source-line-no">143</span><span id="line-143">}</span> |
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| </pre> |
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