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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.client;</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 static org.hamcrest.CoreMatchers.instanceOf;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.hamcrest.MatcherAssert.assertThat;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertArrayEquals;</span> |
| <span class="source-line-no">023</span><span id="line-23">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">024</span><span id="line-24">import static org.junit.Assert.fail;</span> |
| <span class="source-line-no">025</span><span id="line-25"></span> |
| <span class="source-line-no">026</span><span id="line-26">import java.io.IOException;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.util.List;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.util.Optional;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.util.concurrent.atomic.AtomicInteger;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.DoNotRetryIOException;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.coprocessor.ObserverContext;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.coprocessor.RegionObserver;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.exceptions.ScannerResetException;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.regionserver.InternalScanner;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.testclassification.ClientTests;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.junit.AfterClass;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.junit.Before;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.junit.ClassRule;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.junit.Test;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50">import org.apache.hbase.thirdparty.com.google.common.io.Closeables;</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52">@Category({ MediumTests.class, ClientTests.class })</span> |
| <span class="source-line-no">053</span><span id="line-53">public class TestAsyncTableScanException {</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> @ClassRule</span> |
| <span class="source-line-no">056</span><span id="line-56"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">057</span><span id="line-57"> HBaseClassTestRule.forClass(TestAsyncTableScanException.class);</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> private static TableName TABLE_NAME = TableName.valueOf("scan");</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> private static byte[] FAMILY = Bytes.toBytes("family");</span> |
| <span class="source-line-no">064</span><span id="line-64"></span> |
| <span class="source-line-no">065</span><span id="line-65"> private static byte[] QUAL = Bytes.toBytes("qual");</span> |
| <span class="source-line-no">066</span><span id="line-66"></span> |
| <span class="source-line-no">067</span><span id="line-67"> private static AsyncConnection CONN;</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> private static AtomicInteger REQ_COUNT = new AtomicInteger();</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> private static volatile int ERROR_AT;</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> private static volatile boolean ERROR;</span> |
| <span class="source-line-no">074</span><span id="line-74"></span> |
| <span class="source-line-no">075</span><span id="line-75"> private static volatile boolean DO_NOT_RETRY;</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> private static final int ROW_COUNT = 100;</span> |
| <span class="source-line-no">078</span><span id="line-78"></span> |
| <span class="source-line-no">079</span><span id="line-79"> public static final class ErrorCP implements RegionObserver, RegionCoprocessor {</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> @Override</span> |
| <span class="source-line-no">082</span><span id="line-82"> public Optional<RegionObserver> getRegionObserver() {</span> |
| <span class="source-line-no">083</span><span id="line-83"> return Optional.of(this);</span> |
| <span class="source-line-no">084</span><span id="line-84"> }</span> |
| <span class="source-line-no">085</span><span id="line-85"></span> |
| <span class="source-line-no">086</span><span id="line-86"> @Override</span> |
| <span class="source-line-no">087</span><span id="line-87"> public boolean postScannerNext(ObserverContext<RegionCoprocessorEnvironment> c,</span> |
| <span class="source-line-no">088</span><span id="line-88"> InternalScanner s, List<Result> result, int limit, boolean hasNext) throws IOException {</span> |
| <span class="source-line-no">089</span><span id="line-89"> REQ_COUNT.incrementAndGet();</span> |
| <span class="source-line-no">090</span><span id="line-90"> if ((ERROR_AT == REQ_COUNT.get()) || ERROR) {</span> |
| <span class="source-line-no">091</span><span id="line-91"> if (DO_NOT_RETRY) {</span> |
| <span class="source-line-no">092</span><span id="line-92"> throw new DoNotRetryIOException("Injected exception");</span> |
| <span class="source-line-no">093</span><span id="line-93"> } else {</span> |
| <span class="source-line-no">094</span><span id="line-94"> throw new IOException("Injected exception");</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"> return RegionObserver.super.postScannerNext(c, s, result, limit, hasNext);</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> }</span> |
| <span class="source-line-no">101</span><span id="line-101"></span> |
| <span class="source-line-no">102</span><span id="line-102"> @BeforeClass</span> |
| <span class="source-line-no">103</span><span id="line-103"> public static void setUp() throws Exception {</span> |
| <span class="source-line-no">104</span><span id="line-104"> UTIL.startMiniCluster(1);</span> |
| <span class="source-line-no">105</span><span id="line-105"> UTIL.getAdmin()</span> |
| <span class="source-line-no">106</span><span id="line-106"> .createTable(TableDescriptorBuilder.newBuilder(TABLE_NAME)</span> |
| <span class="source-line-no">107</span><span id="line-107"> .setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY))</span> |
| <span class="source-line-no">108</span><span id="line-108"> .setCoprocessor(ErrorCP.class.getName()).build());</span> |
| <span class="source-line-no">109</span><span id="line-109"> try (Table table = UTIL.getConnection().getTable(TABLE_NAME)) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> for (int i = 0; i < ROW_COUNT; i++) {</span> |
| <span class="source-line-no">111</span><span id="line-111"> table.put(new Put(Bytes.toBytes(i)).addColumn(FAMILY, QUAL, Bytes.toBytes(i)));</span> |
| <span class="source-line-no">112</span><span id="line-112"> }</span> |
| <span class="source-line-no">113</span><span id="line-113"> }</span> |
| <span class="source-line-no">114</span><span id="line-114"> CONN = ConnectionFactory.createAsyncConnection(UTIL.getConfiguration()).get();</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"> @AfterClass</span> |
| <span class="source-line-no">118</span><span id="line-118"> public static void tearDown() throws Exception {</span> |
| <span class="source-line-no">119</span><span id="line-119"> Closeables.close(CONN, true);</span> |
| <span class="source-line-no">120</span><span id="line-120"> UTIL.shutdownMiniCluster();</span> |
| <span class="source-line-no">121</span><span id="line-121"> }</span> |
| <span class="source-line-no">122</span><span id="line-122"></span> |
| <span class="source-line-no">123</span><span id="line-123"> @Before</span> |
| <span class="source-line-no">124</span><span id="line-124"> public void setUpBeforeTest() {</span> |
| <span class="source-line-no">125</span><span id="line-125"> REQ_COUNT.set(0);</span> |
| <span class="source-line-no">126</span><span id="line-126"> ERROR_AT = 0;</span> |
| <span class="source-line-no">127</span><span id="line-127"> ERROR = false;</span> |
| <span class="source-line-no">128</span><span id="line-128"> DO_NOT_RETRY = false;</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"> @Test(expected = DoNotRetryIOException.class)</span> |
| <span class="source-line-no">132</span><span id="line-132"> public void testDoNotRetryIOException() throws IOException {</span> |
| <span class="source-line-no">133</span><span id="line-133"> ERROR_AT = 1;</span> |
| <span class="source-line-no">134</span><span id="line-134"> DO_NOT_RETRY = true;</span> |
| <span class="source-line-no">135</span><span id="line-135"> try (ResultScanner scanner = CONN.getTable(TABLE_NAME).getScanner(FAMILY)) {</span> |
| <span class="source-line-no">136</span><span id="line-136"> scanner.next();</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"> }</span> |
| <span class="source-line-no">139</span><span id="line-139"></span> |
| <span class="source-line-no">140</span><span id="line-140"> @Test</span> |
| <span class="source-line-no">141</span><span id="line-141"> public void testIOException() throws IOException {</span> |
| <span class="source-line-no">142</span><span id="line-142"> ERROR = true;</span> |
| <span class="source-line-no">143</span><span id="line-143"> try (ResultScanner scanner =</span> |
| <span class="source-line-no">144</span><span id="line-144"> CONN.getTableBuilder(TABLE_NAME).setMaxAttempts(3).build().getScanner(FAMILY)) {</span> |
| <span class="source-line-no">145</span><span id="line-145"> scanner.next();</span> |
| <span class="source-line-no">146</span><span id="line-146"> fail();</span> |
| <span class="source-line-no">147</span><span id="line-147"> } catch (RetriesExhaustedException e) {</span> |
| <span class="source-line-no">148</span><span id="line-148"> // expected</span> |
| <span class="source-line-no">149</span><span id="line-149"> assertThat(e.getCause(), instanceOf(ScannerResetException.class));</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"> assertTrue(REQ_COUNT.get() >= 3);</span> |
| <span class="source-line-no">152</span><span id="line-152"> }</span> |
| <span class="source-line-no">153</span><span id="line-153"></span> |
| <span class="source-line-no">154</span><span id="line-154"> private void count() throws IOException {</span> |
| <span class="source-line-no">155</span><span id="line-155"> try (ResultScanner scanner = CONN.getTable(TABLE_NAME).getScanner(new Scan().setCaching(1))) {</span> |
| <span class="source-line-no">156</span><span id="line-156"> for (int i = 0; i < ROW_COUNT; i++) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> Result result = scanner.next();</span> |
| <span class="source-line-no">158</span><span id="line-158"> assertArrayEquals(Bytes.toBytes(i), result.getRow());</span> |
| <span class="source-line-no">159</span><span id="line-159"> assertArrayEquals(Bytes.toBytes(i), result.getValue(FAMILY, QUAL));</span> |
| <span class="source-line-no">160</span><span id="line-160"> }</span> |
| <span class="source-line-no">161</span><span id="line-161"> }</span> |
| <span class="source-line-no">162</span><span id="line-162"> }</span> |
| <span class="source-line-no">163</span><span id="line-163"></span> |
| <span class="source-line-no">164</span><span id="line-164"> @Test</span> |
| <span class="source-line-no">165</span><span id="line-165"> public void testRecoveryFromScannerResetWhileOpening() throws IOException {</span> |
| <span class="source-line-no">166</span><span id="line-166"> ERROR_AT = 1;</span> |
| <span class="source-line-no">167</span><span id="line-167"> count();</span> |
| <span class="source-line-no">168</span><span id="line-168"> // we should at least request 1 time otherwise the error will not be triggered, and then we</span> |
| <span class="source-line-no">169</span><span id="line-169"> // need at least one more request to get the remaining results.</span> |
| <span class="source-line-no">170</span><span id="line-170"> assertTrue(REQ_COUNT.get() >= 2);</span> |
| <span class="source-line-no">171</span><span id="line-171"> }</span> |
| <span class="source-line-no">172</span><span id="line-172"></span> |
| <span class="source-line-no">173</span><span id="line-173"> @Test</span> |
| <span class="source-line-no">174</span><span id="line-174"> public void testRecoveryFromScannerResetInTheMiddle() throws IOException {</span> |
| <span class="source-line-no">175</span><span id="line-175"> ERROR_AT = 2;</span> |
| <span class="source-line-no">176</span><span id="line-176"> count();</span> |
| <span class="source-line-no">177</span><span id="line-177"> // we should at least request 2 times otherwise the error will not be triggered, and then we</span> |
| <span class="source-line-no">178</span><span id="line-178"> // need at least one more request to get the remaining results.</span> |
| <span class="source-line-no">179</span><span id="line-179"> assertTrue(REQ_COUNT.get() >= 3);</span> |
| <span class="source-line-no">180</span><span id="line-180"> }</span> |
| <span class="source-line-no">181</span><span id="line-181">}</span> |
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| </div> |
| </main> |
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| </html> |
