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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.regionserver;</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.junit.Assert.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">022</span><span id="line-22"></span> |
| <span class="source-line-no">023</span><span id="line-23">import java.io.IOException;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.ArrayList;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.List;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.Optional;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.fs.FileSystem;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.fs.Path;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.TableName;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.TableNameTestRule;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.client.Durability;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.client.Put;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.client.Result;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.client.ResultScanner;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.client.Scan;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.client.Table;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.coprocessor.ObserverContext;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.coprocessor.RegionObserver;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.hadoop.hbase.testclassification.RegionServerTests;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.apache.hadoop.hbase.util.Bytes;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.junit.AfterClass;</span> |
| <span class="source-line-no">049</span><span id="line-49">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">050</span><span id="line-50">import org.junit.ClassRule;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.junit.Rule;</span> |
| <span class="source-line-no">052</span><span id="line-52">import org.junit.Test;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">054</span><span id="line-54">import org.slf4j.Logger;</span> |
| <span class="source-line-no">055</span><span id="line-55">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">056</span><span id="line-56"></span> |
| <span class="source-line-no">057</span><span id="line-57">@Category({ RegionServerTests.class, MediumTests.class })</span> |
| <span class="source-line-no">058</span><span id="line-58">public class TestScannerRetriableFailure {</span> |
| <span class="source-line-no">059</span><span id="line-59"></span> |
| <span class="source-line-no">060</span><span id="line-60"> @ClassRule</span> |
| <span class="source-line-no">061</span><span id="line-61"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">062</span><span id="line-62"> HBaseClassTestRule.forClass(TestScannerRetriableFailure.class);</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> private static final Logger LOG = LoggerFactory.getLogger(TestScannerRetriableFailure.class);</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> private static final HBaseTestingUtil UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> private static final String FAMILY_NAME_STR = "f";</span> |
| <span class="source-line-no">069</span><span id="line-69"> private static final byte[] FAMILY_NAME = Bytes.toBytes(FAMILY_NAME_STR);</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> @Rule</span> |
| <span class="source-line-no">072</span><span id="line-72"> public TableNameTestRule testTable = new TableNameTestRule();</span> |
| <span class="source-line-no">073</span><span id="line-73"></span> |
| <span class="source-line-no">074</span><span id="line-74"> public static class FaultyScannerObserver implements RegionCoprocessor, RegionObserver {</span> |
| <span class="source-line-no">075</span><span id="line-75"> private int faults = 0;</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> @Override</span> |
| <span class="source-line-no">078</span><span id="line-78"> public Optional<RegionObserver> getRegionObserver() {</span> |
| <span class="source-line-no">079</span><span id="line-79"> return Optional.of(this);</span> |
| <span class="source-line-no">080</span><span id="line-80"> }</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> @Override</span> |
| <span class="source-line-no">083</span><span id="line-83"> public boolean preScannerNext(final ObserverContext<RegionCoprocessorEnvironment> e,</span> |
| <span class="source-line-no">084</span><span id="line-84"> final InternalScanner s, final List<Result> results, final int limit, final boolean hasMore)</span> |
| <span class="source-line-no">085</span><span id="line-85"> throws IOException {</span> |
| <span class="source-line-no">086</span><span id="line-86"> final TableName tableName = e.getEnvironment().getRegionInfo().getTable();</span> |
| <span class="source-line-no">087</span><span id="line-87"> if (!tableName.isSystemTable() && (faults++ % 2) == 0) {</span> |
| <span class="source-line-no">088</span><span id="line-88"> LOG.debug(" Injecting fault in table=" + tableName + " scanner");</span> |
| <span class="source-line-no">089</span><span id="line-89"> throw new IOException("injected fault");</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"> return hasMore;</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"></span> |
| <span class="source-line-no">095</span><span id="line-95"> private static void setupConf(Configuration conf) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> conf.setLong("hbase.hstore.compaction.min", 20);</span> |
| <span class="source-line-no">097</span><span id="line-97"> conf.setLong("hbase.hstore.compaction.max", 39);</span> |
| <span class="source-line-no">098</span><span id="line-98"> conf.setLong("hbase.hstore.blockingStoreFiles", 40);</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY, FaultyScannerObserver.class.getName());</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> @BeforeClass</span> |
| <span class="source-line-no">104</span><span id="line-104"> public static void setup() throws Exception {</span> |
| <span class="source-line-no">105</span><span id="line-105"> setupConf(UTIL.getConfiguration());</span> |
| <span class="source-line-no">106</span><span id="line-106"> UTIL.startMiniCluster(1);</span> |
| <span class="source-line-no">107</span><span id="line-107"> }</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> @AfterClass</span> |
| <span class="source-line-no">110</span><span id="line-110"> public static void tearDown() throws Exception {</span> |
| <span class="source-line-no">111</span><span id="line-111"> try {</span> |
| <span class="source-line-no">112</span><span id="line-112"> UTIL.shutdownMiniCluster();</span> |
| <span class="source-line-no">113</span><span id="line-113"> } catch (Exception e) {</span> |
| <span class="source-line-no">114</span><span id="line-114"> LOG.warn("failure shutting down cluster", e);</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"></span> |
| <span class="source-line-no">118</span><span id="line-118"> @Test</span> |
| <span class="source-line-no">119</span><span id="line-119"> public void testFaultyScanner() throws Exception {</span> |
| <span class="source-line-no">120</span><span id="line-120"> TableName tableName = testTable.getTableName();</span> |
| <span class="source-line-no">121</span><span id="line-121"> Table table = UTIL.createTable(tableName, FAMILY_NAME);</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"> final int NUM_ROWS = 100;</span> |
| <span class="source-line-no">124</span><span id="line-124"> loadTable(table, NUM_ROWS);</span> |
| <span class="source-line-no">125</span><span id="line-125"> checkTableRows(table, NUM_ROWS);</span> |
| <span class="source-line-no">126</span><span id="line-126"> } finally {</span> |
| <span class="source-line-no">127</span><span id="line-127"> table.close();</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"></span> |
| <span class="source-line-no">131</span><span id="line-131"> // ==========================================================================</span> |
| <span class="source-line-no">132</span><span id="line-132"> // Helpers</span> |
| <span class="source-line-no">133</span><span id="line-133"> // ==========================================================================</span> |
| <span class="source-line-no">134</span><span id="line-134"> private FileSystem getFileSystem() {</span> |
| <span class="source-line-no">135</span><span id="line-135"> return UTIL.getHBaseCluster().getMaster().getMasterFileSystem().getFileSystem();</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> private Path getRootDir() {</span> |
| <span class="source-line-no">139</span><span id="line-139"> return UTIL.getHBaseCluster().getMaster().getMasterFileSystem().getRootDir();</span> |
| <span class="source-line-no">140</span><span id="line-140"> }</span> |
| <span class="source-line-no">141</span><span id="line-141"></span> |
| <span class="source-line-no">142</span><span id="line-142"> public void loadTable(final Table table, int numRows) throws IOException {</span> |
| <span class="source-line-no">143</span><span id="line-143"> List<Put> puts = new ArrayList<>(numRows);</span> |
| <span class="source-line-no">144</span><span id="line-144"> for (int i = 0; i < numRows; ++i) {</span> |
| <span class="source-line-no">145</span><span id="line-145"> byte[] row = Bytes.toBytes(String.format("%09d", i));</span> |
| <span class="source-line-no">146</span><span id="line-146"> Put put = new Put(row);</span> |
| <span class="source-line-no">147</span><span id="line-147"> put.setDurability(Durability.SKIP_WAL);</span> |
| <span class="source-line-no">148</span><span id="line-148"> put.addColumn(FAMILY_NAME, null, row);</span> |
| <span class="source-line-no">149</span><span id="line-149"> table.put(put);</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"> }</span> |
| <span class="source-line-no">152</span><span id="line-152"></span> |
| <span class="source-line-no">153</span><span id="line-153"> private void checkTableRows(final Table table, int numRows) throws Exception {</span> |
| <span class="source-line-no">154</span><span id="line-154"> Scan scan = new Scan();</span> |
| <span class="source-line-no">155</span><span id="line-155"> scan.setCaching(1);</span> |
| <span class="source-line-no">156</span><span id="line-156"> scan.setCacheBlocks(false);</span> |
| <span class="source-line-no">157</span><span id="line-157"> ResultScanner scanner = table.getScanner(scan);</span> |
| <span class="source-line-no">158</span><span id="line-158"> try {</span> |
| <span class="source-line-no">159</span><span id="line-159"> int count = 0;</span> |
| <span class="source-line-no">160</span><span id="line-160"> for (int i = 0; i < numRows; ++i) {</span> |
| <span class="source-line-no">161</span><span id="line-161"> byte[] row = Bytes.toBytes(String.format("%09d", i));</span> |
| <span class="source-line-no">162</span><span id="line-162"> Result result = scanner.next();</span> |
| <span class="source-line-no">163</span><span id="line-163"> assertTrue(result != null);</span> |
| <span class="source-line-no">164</span><span id="line-164"> assertTrue(Bytes.equals(row, result.getRow()));</span> |
| <span class="source-line-no">165</span><span id="line-165"> count++;</span> |
| <span class="source-line-no">166</span><span id="line-166"> }</span> |
| <span class="source-line-no">167</span><span id="line-167"></span> |
| <span class="source-line-no">168</span><span id="line-168"> while (true) {</span> |
| <span class="source-line-no">169</span><span id="line-169"> Result result = scanner.next();</span> |
| <span class="source-line-no">170</span><span id="line-170"> if (result == null) break;</span> |
| <span class="source-line-no">171</span><span id="line-171"> count++;</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173"> assertEquals(numRows, count);</span> |
| <span class="source-line-no">174</span><span id="line-174"> } finally {</span> |
| <span class="source-line-no">175</span><span id="line-175"> scanner.close();</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> }</span> |
| <span class="source-line-no">178</span><span id="line-178">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
