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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.regionserver;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.junit.Assert.fail;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.ArrayList;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.Arrays;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.concurrent.CountDownLatch;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.conf.Configuration;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.hadoop.fs.FileSystem;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.hadoop.fs.Path;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseTestingUtil;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HConstants;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.TableName;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.Increment;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.Mutation;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.Put;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.testclassification.RegionServerTests;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.testclassification.SmallTests;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.wal.WAL;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.wal.WALEdit;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.wal.WALFactory;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.wal.WALStreamReader;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import org.junit.After;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import org.junit.AfterClass;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.junit.Before;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.junit.ClassRule;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import org.junit.Rule;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.junit.Test;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import org.junit.experimental.categories.Category;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import org.junit.rules.TestName;<a name="line.58"></a>
<span class="sourceLineNo">059</span>import org.junit.runner.RunWith;<a name="line.59"></a>
<span class="sourceLineNo">060</span>import org.junit.runners.Parameterized;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import org.junit.runners.Parameterized.Parameter;<a name="line.61"></a>
<span class="sourceLineNo">062</span>import org.junit.runners.Parameterized.Parameters;<a name="line.62"></a>
<span class="sourceLineNo">063</span>import org.slf4j.Logger;<a name="line.63"></a>
<span class="sourceLineNo">064</span>import org.slf4j.LoggerFactory;<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span>/**<a name="line.66"></a>
<span class="sourceLineNo">067</span> * Test for HBASE-17471.<a name="line.67"></a>
<span class="sourceLineNo">068</span> * &lt;p&gt;<a name="line.68"></a>
<span class="sourceLineNo">069</span> * MVCCPreAssign is added by HBASE-16698, but pre-assign mvcc is only used in put/delete path. Other<a name="line.69"></a>
<span class="sourceLineNo">070</span> * write paths like increment/append still assign mvcc in ringbuffer's consumer thread. If put and<a name="line.70"></a>
<span class="sourceLineNo">071</span> * increment are used parallel. Then seqid in WAL may not increase monotonically Disorder in wals<a name="line.71"></a>
<span class="sourceLineNo">072</span> * will lead to data loss.<a name="line.72"></a>
<span class="sourceLineNo">073</span> * &lt;p&gt;<a name="line.73"></a>
<span class="sourceLineNo">074</span> * This case use two thread to put and increment at the same time in a single region. Then check the<a name="line.74"></a>
<span class="sourceLineNo">075</span> * seqid in WAL. If seqid is wal is not monotonically increasing, this case will fail<a name="line.75"></a>
<span class="sourceLineNo">076</span> */<a name="line.76"></a>
<span class="sourceLineNo">077</span>@RunWith(Parameterized.class)<a name="line.77"></a>
<span class="sourceLineNo">078</span>@Category({ RegionServerTests.class, SmallTests.class })<a name="line.78"></a>
<span class="sourceLineNo">079</span>public class TestWALMonotonicallyIncreasingSeqId {<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span> @ClassRule<a name="line.81"></a>
<span class="sourceLineNo">082</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.82"></a>
<span class="sourceLineNo">083</span> HBaseClassTestRule.forClass(TestWALMonotonicallyIncreasingSeqId.class);<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span> private final Logger LOG = LoggerFactory.getLogger(getClass());<a name="line.85"></a>
<span class="sourceLineNo">086</span> private final static HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil();<a name="line.86"></a>
<span class="sourceLineNo">087</span> private static Path testDir = TEST_UTIL.getDataTestDir("TestWALMonotonicallyIncreasingSeqId");<a name="line.87"></a>
<span class="sourceLineNo">088</span> private WALFactory wals;<a name="line.88"></a>
<span class="sourceLineNo">089</span> private FileSystem fileSystem;<a name="line.89"></a>
<span class="sourceLineNo">090</span> private Configuration walConf;<a name="line.90"></a>
<span class="sourceLineNo">091</span> private HRegion region;<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span> @Parameter<a name="line.93"></a>
<span class="sourceLineNo">094</span> public String walProvider;<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span> @Rule<a name="line.96"></a>
<span class="sourceLineNo">097</span> public TestName name = new TestName();<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span> @Parameters(name = "{index}: wal={0}")<a name="line.99"></a>
<span class="sourceLineNo">100</span> public static List&lt;Object[]&gt; data() {<a name="line.100"></a>
<span class="sourceLineNo">101</span> return Arrays.asList(new Object[] { "asyncfs" }, new Object[] { "filesystem" });<a name="line.101"></a>
<span class="sourceLineNo">102</span> }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span> private TableDescriptor getTableDesc(TableName tableName, byte[]... families) {<a name="line.104"></a>
<span class="sourceLineNo">105</span> TableDescriptorBuilder builder = TableDescriptorBuilder.newBuilder(tableName);<a name="line.105"></a>
<span class="sourceLineNo">106</span> Arrays.stream(families)<a name="line.106"></a>
<span class="sourceLineNo">107</span> .map(<a name="line.107"></a>
<span class="sourceLineNo">108</span> f -&gt; ColumnFamilyDescriptorBuilder.newBuilder(f).setMaxVersions(Integer.MAX_VALUE).build())<a name="line.108"></a>
<span class="sourceLineNo">109</span> .forEachOrdered(builder::setColumnFamily);<a name="line.109"></a>
<span class="sourceLineNo">110</span> return builder.build();<a name="line.110"></a>
<span class="sourceLineNo">111</span> }<a name="line.111"></a>
<span class="sourceLineNo">112</span><a name="line.112"></a>
<span class="sourceLineNo">113</span> private HRegion initHRegion(TableDescriptor htd, byte[] startKey, byte[] stopKey, int replicaId)<a name="line.113"></a>
<span class="sourceLineNo">114</span> throws IOException {<a name="line.114"></a>
<span class="sourceLineNo">115</span> Configuration conf = TEST_UTIL.getConfiguration();<a name="line.115"></a>
<span class="sourceLineNo">116</span> conf.set("hbase.wal.provider", walProvider);<a name="line.116"></a>
<span class="sourceLineNo">117</span> conf.setBoolean("hbase.hregion.mvcc.preassign", false);<a name="line.117"></a>
<span class="sourceLineNo">118</span> Path tableDir = CommonFSUtils.getTableDir(testDir, htd.getTableName());<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span> RegionInfo info = RegionInfoBuilder.newBuilder(htd.getTableName()).setStartKey(startKey)<a name="line.120"></a>
<span class="sourceLineNo">121</span> .setEndKey(stopKey).setReplicaId(replicaId).setRegionId(0).build();<a name="line.121"></a>
<span class="sourceLineNo">122</span> fileSystem = tableDir.getFileSystem(conf);<a name="line.122"></a>
<span class="sourceLineNo">123</span> final Configuration walConf = new Configuration(conf);<a name="line.123"></a>
<span class="sourceLineNo">124</span> CommonFSUtils.setRootDir(walConf, tableDir);<a name="line.124"></a>
<span class="sourceLineNo">125</span> this.walConf = walConf;<a name="line.125"></a>
<span class="sourceLineNo">126</span> wals = new WALFactory(walConf, "log_" + replicaId);<a name="line.126"></a>
<span class="sourceLineNo">127</span> ChunkCreator.initialize(MemStoreLAB.CHUNK_SIZE_DEFAULT, false, 0, 0, 0, null,<a name="line.127"></a>
<span class="sourceLineNo">128</span> MemStoreLAB.INDEX_CHUNK_SIZE_PERCENTAGE_DEFAULT);<a name="line.128"></a>
<span class="sourceLineNo">129</span> HRegion region =<a name="line.129"></a>
<span class="sourceLineNo">130</span> HRegion.createHRegion(info, TEST_UTIL.getDefaultRootDirPath(), conf, htd, wals.getWAL(info));<a name="line.130"></a>
<span class="sourceLineNo">131</span> return region;<a name="line.131"></a>
<span class="sourceLineNo">132</span> }<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span> CountDownLatch latch = new CountDownLatch(1);<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span> public class PutThread extends Thread {<a name="line.136"></a>
<span class="sourceLineNo">137</span> HRegion region;<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span> public PutThread(HRegion region) {<a name="line.139"></a>
<span class="sourceLineNo">140</span> this.region = region;<a name="line.140"></a>
<span class="sourceLineNo">141</span> }<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span> @Override<a name="line.143"></a>
<span class="sourceLineNo">144</span> public void run() {<a name="line.144"></a>
<span class="sourceLineNo">145</span> try {<a name="line.145"></a>
<span class="sourceLineNo">146</span> for (int i = 0; i &lt; 100; i++) {<a name="line.146"></a>
<span class="sourceLineNo">147</span> byte[] row = Bytes.toBytes("putRow" + i);<a name="line.147"></a>
<span class="sourceLineNo">148</span> Put put = new Put(row);<a name="line.148"></a>
<span class="sourceLineNo">149</span> put.addColumn(Bytes.toBytes("cf"), Bytes.toBytes(0), new byte[0]);<a name="line.149"></a>
<span class="sourceLineNo">150</span> latch.await();<a name="line.150"></a>
<span class="sourceLineNo">151</span> region.batchMutate(new Mutation[] { put });<a name="line.151"></a>
<span class="sourceLineNo">152</span> Thread.sleep(10);<a name="line.152"></a>
<span class="sourceLineNo">153</span> }<a name="line.153"></a>
<span class="sourceLineNo">154</span><a name="line.154"></a>
<span class="sourceLineNo">155</span> } catch (Throwable t) {<a name="line.155"></a>
<span class="sourceLineNo">156</span> LOG.warn("Error happend when Increment: ", t);<a name="line.156"></a>
<span class="sourceLineNo">157</span> }<a name="line.157"></a>
<span class="sourceLineNo">158</span> }<a name="line.158"></a>
<span class="sourceLineNo">159</span> }<a name="line.159"></a>
<span class="sourceLineNo">160</span><a name="line.160"></a>
<span class="sourceLineNo">161</span> public class IncThread extends Thread {<a name="line.161"></a>
<span class="sourceLineNo">162</span> HRegion region;<a name="line.162"></a>
<span class="sourceLineNo">163</span><a name="line.163"></a>
<span class="sourceLineNo">164</span> public IncThread(HRegion region) {<a name="line.164"></a>
<span class="sourceLineNo">165</span> this.region = region;<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> @Override<a name="line.168"></a>
<span class="sourceLineNo">169</span> public void run() {<a name="line.169"></a>
<span class="sourceLineNo">170</span> try {<a name="line.170"></a>
<span class="sourceLineNo">171</span> for (int i = 0; i &lt; 100; i++) {<a name="line.171"></a>
<span class="sourceLineNo">172</span> byte[] row = Bytes.toBytes("incrementRow" + i);<a name="line.172"></a>
<span class="sourceLineNo">173</span> Increment inc = new Increment(row);<a name="line.173"></a>
<span class="sourceLineNo">174</span> inc.addColumn(Bytes.toBytes("cf"), Bytes.toBytes(0), 1);<a name="line.174"></a>
<span class="sourceLineNo">175</span> // inc.setDurability(Durability.ASYNC_WAL);<a name="line.175"></a>
<span class="sourceLineNo">176</span> region.increment(inc);<a name="line.176"></a>
<span class="sourceLineNo">177</span> latch.countDown();<a name="line.177"></a>
<span class="sourceLineNo">178</span> Thread.sleep(10);<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> } catch (Throwable t) {<a name="line.181"></a>
<span class="sourceLineNo">182</span> LOG.warn("Error happend when Put: ", t);<a name="line.182"></a>
<span class="sourceLineNo">183</span> }<a name="line.183"></a>
<span class="sourceLineNo">184</span> }<a name="line.184"></a>
<span class="sourceLineNo">185</span> }<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span> @Before<a name="line.187"></a>
<span class="sourceLineNo">188</span> public void setUp() throws IOException {<a name="line.188"></a>
<span class="sourceLineNo">189</span> byte[][] families = new byte[][] { Bytes.toBytes("cf") };<a name="line.189"></a>
<span class="sourceLineNo">190</span> TableDescriptor htd = getTableDesc(<a name="line.190"></a>
<span class="sourceLineNo">191</span> TableName.valueOf(name.getMethodName().replaceAll("[^0-9A-Za-z_]", "_")), families);<a name="line.191"></a>
<span class="sourceLineNo">192</span> region = initHRegion(htd, HConstants.EMPTY_START_ROW, HConstants.EMPTY_END_ROW, 0);<a name="line.192"></a>
<span class="sourceLineNo">193</span> }<a name="line.193"></a>
<span class="sourceLineNo">194</span><a name="line.194"></a>
<span class="sourceLineNo">195</span> @After<a name="line.195"></a>
<span class="sourceLineNo">196</span> public void tearDown() throws IOException {<a name="line.196"></a>
<span class="sourceLineNo">197</span> if (region != null) {<a name="line.197"></a>
<span class="sourceLineNo">198</span> region.close();<a name="line.198"></a>
<span class="sourceLineNo">199</span> }<a name="line.199"></a>
<span class="sourceLineNo">200</span> }<a name="line.200"></a>
<span class="sourceLineNo">201</span><a name="line.201"></a>
<span class="sourceLineNo">202</span> @AfterClass<a name="line.202"></a>
<span class="sourceLineNo">203</span> public static void tearDownAfterClass() throws IOException {<a name="line.203"></a>
<span class="sourceLineNo">204</span> TEST_UTIL.cleanupTestDir();<a name="line.204"></a>
<span class="sourceLineNo">205</span> }<a name="line.205"></a>
<span class="sourceLineNo">206</span><a name="line.206"></a>
<span class="sourceLineNo">207</span> private WALStreamReader createReader(Path logPath, Path oldWalsDir) throws IOException {<a name="line.207"></a>
<span class="sourceLineNo">208</span> try {<a name="line.208"></a>
<span class="sourceLineNo">209</span> return wals.createStreamReader(fileSystem, logPath);<a name="line.209"></a>
<span class="sourceLineNo">210</span> } catch (IOException e) {<a name="line.210"></a>
<span class="sourceLineNo">211</span> return wals.createStreamReader(fileSystem, new Path(oldWalsDir, logPath.getName()));<a name="line.211"></a>
<span class="sourceLineNo">212</span> }<a name="line.212"></a>
<span class="sourceLineNo">213</span> }<a name="line.213"></a>
<span class="sourceLineNo">214</span><a name="line.214"></a>
<span class="sourceLineNo">215</span> @Test<a name="line.215"></a>
<span class="sourceLineNo">216</span> public void testWALMonotonicallyIncreasingSeqId() throws Exception {<a name="line.216"></a>
<span class="sourceLineNo">217</span> List&lt;Thread&gt; putThreads = new ArrayList&lt;&gt;();<a name="line.217"></a>
<span class="sourceLineNo">218</span> for (int i = 0; i &lt; 1; i++) {<a name="line.218"></a>
<span class="sourceLineNo">219</span> putThreads.add(new PutThread(region));<a name="line.219"></a>
<span class="sourceLineNo">220</span> }<a name="line.220"></a>
<span class="sourceLineNo">221</span> IncThread incThread = new IncThread(region);<a name="line.221"></a>
<span class="sourceLineNo">222</span> for (int i = 0; i &lt; 1; i++) {<a name="line.222"></a>
<span class="sourceLineNo">223</span> putThreads.get(i).start();<a name="line.223"></a>
<span class="sourceLineNo">224</span> }<a name="line.224"></a>
<span class="sourceLineNo">225</span> incThread.start();<a name="line.225"></a>
<span class="sourceLineNo">226</span> incThread.join();<a name="line.226"></a>
<span class="sourceLineNo">227</span><a name="line.227"></a>
<span class="sourceLineNo">228</span> Path logPath = ((AbstractFSWAL&lt;?&gt;) region.getWAL()).getCurrentFileName();<a name="line.228"></a>
<span class="sourceLineNo">229</span> region.getWAL().rollWriter();<a name="line.229"></a>
<span class="sourceLineNo">230</span> Thread.sleep(10);<a name="line.230"></a>
<span class="sourceLineNo">231</span> Path hbaseDir = new Path(walConf.get(HConstants.HBASE_DIR));<a name="line.231"></a>
<span class="sourceLineNo">232</span> Path oldWalsDir = new Path(hbaseDir, HConstants.HREGION_OLDLOGDIR_NAME);<a name="line.232"></a>
<span class="sourceLineNo">233</span> try (WALStreamReader reader = createReader(logPath, oldWalsDir)) {<a name="line.233"></a>
<span class="sourceLineNo">234</span> long currentMaxSeqid = 0;<a name="line.234"></a>
<span class="sourceLineNo">235</span> for (WAL.Entry e; (e = reader.next()) != null;) {<a name="line.235"></a>
<span class="sourceLineNo">236</span> if (!WALEdit.isMetaEditFamily(e.getEdit().getCells().get(0))) {<a name="line.236"></a>
<span class="sourceLineNo">237</span> long currentSeqid = e.getKey().getSequenceId();<a name="line.237"></a>
<span class="sourceLineNo">238</span> if (currentSeqid &gt; currentMaxSeqid) {<a name="line.238"></a>
<span class="sourceLineNo">239</span> currentMaxSeqid = currentSeqid;<a name="line.239"></a>
<span class="sourceLineNo">240</span> } else {<a name="line.240"></a>
<span class="sourceLineNo">241</span> fail("Current max Seqid is " + currentMaxSeqid<a name="line.241"></a>
<span class="sourceLineNo">242</span> + ", but the next seqid in wal is smaller:" + currentSeqid);<a name="line.242"></a>
<span class="sourceLineNo">243</span> }<a name="line.243"></a>
<span class="sourceLineNo">244</span> }<a name="line.244"></a>
<span class="sourceLineNo">245</span> }<a name="line.245"></a>
<span class="sourceLineNo">246</span> }<a name="line.246"></a>
<span class="sourceLineNo">247</span> }<a name="line.247"></a>
<span class="sourceLineNo">248</span>}<a name="line.248"></a>
</pre>
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