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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.wal;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import com.google.errorprone.annotations.RestrictedApi;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.InterruptedIOException;<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.List;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.concurrent.atomic.AtomicReference;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.conf.Configuration;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.fs.FileSystem;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.hadoop.fs.Path;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.Abortable;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.ServerName;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.io.asyncfs.monitor.ExcludeDatanodeManager;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.regionserver.wal.MetricsWAL;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.regionserver.wal.ProtobufWALStreamReader;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.regionserver.wal.ProtobufWALTailingReader;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.replication.ReplicationStorageFactory;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.CancelableProgressable;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.LeaseNotRecoveredException;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.wal.WALProvider.Writer;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.slf4j.Logger;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.slf4j.LoggerFactory;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span>/**<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * Entry point for users of the Write Ahead Log. Acts as the shim between internal use and the<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * particular WALProvider we use to handle wal requests. Configure which provider gets used with the<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * configuration setting "hbase.wal.provider". Available implementations:<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * <ul><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * <li><em>defaultProvider</em> : whatever provider is standard for the hbase version. Currently<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * "asyncfs"</li><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * <li><em>asyncfs</em> : a provider that will run on top of an implementation of the Hadoop<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * FileSystem interface via an asynchronous client.</li><a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * <li><em>filesystem</em> : a provider that will run on top of an implementation of the Hadoop<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * FileSystem interface via HDFS's synchronous DFSClient.</li><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * <li><em>multiwal</em> : a provider that will use multiple "filesystem" wal instances per region<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * server.</li><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * </ul><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * Alternatively, you may provide a custom implementation of {@link WALProvider} by class name.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> */<a name="line.63"></a> |
| <span class="sourceLineNo">064</span>@InterfaceAudience.Private<a name="line.64"></a> |
| <span class="sourceLineNo">065</span>public class WALFactory {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> /**<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * Used in tests for injecting customized stream reader implementation, for example, inject fault<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * when reading, etc.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * <p/><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * After removing the sequence file based WAL, we always use protobuf based WAL reader, and we<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * will also determine whether the WAL file is encrypted and we should use<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * {@link org.apache.hadoop.hbase.regionserver.wal.SecureWALCellCodec} to decode by check the<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * header of the WAL file, so we do not need to specify a specical reader to read the WAL file<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * either.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * <p/><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * So typically you should not use this config in production.<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public static final String WAL_STREAM_READER_CLASS_IMPL =<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> "hbase.regionserver.wal.stream.reader.impl";<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private static final Logger LOG = LoggerFactory.getLogger(WALFactory.class);<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> /**<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * Maps between configuration names for providers and implementation classes.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> */<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> enum Providers {<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> defaultProvider(AsyncFSWALProvider.class),<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> filesystem(FSHLogProvider.class),<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> multiwal(RegionGroupingProvider.class),<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> asyncfs(AsyncFSWALProvider.class);<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> final Class<? extends WALProvider> clazz;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> Providers(Class<? extends WALProvider> clazz) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> this.clazz = clazz;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> }<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> public static final String WAL_PROVIDER = "hbase.wal.provider";<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> static final String DEFAULT_WAL_PROVIDER = Providers.defaultProvider.name();<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> public static final String META_WAL_PROVIDER = "hbase.wal.meta_provider";<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> public static final String REPLICATION_WAL_PROVIDER = "hbase.wal.replication_provider";<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> public static final String WAL_ENABLED = "hbase.regionserver.hlog.enabled";<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> static final String REPLICATION_WAL_PROVIDER_ID = "rep";<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> final String factoryId;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> final Abortable abortable;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> private final WALProvider provider;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> // The meta updates are written to a different wal. If this<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> // regionserver holds meta regions, then this ref will be non-null.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> // lazily intialized; most RegionServers don't deal with META<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> private final LazyInitializedWALProvider metaProvider;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> // This is for avoid hbase:replication itself keeps trigger unnecessary updates to WAL file and<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> // generate a lot useless data, see HBASE-27775 for more details.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> private final LazyInitializedWALProvider replicationProvider;<a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> /**<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * Configuration-specified WAL Reader used when a custom reader is requested<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> */<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> private final Class<? extends WALStreamReader> walStreamReaderClass;<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> /**<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * How long to attempt opening in-recovery wals<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> */<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> private final int timeoutMillis;<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> private final Configuration conf;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span><a name="line.133"></a> |
| <span class="sourceLineNo">134</span> private final ExcludeDatanodeManager excludeDatanodeManager;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> // Used for the singleton WALFactory, see below.<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> private WALFactory(Configuration conf) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> // this code is duplicated here so we can keep our members final.<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> // until we've moved reader/writer construction down into providers, this initialization must<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> // happen prior to provider initialization, in case they need to instantiate a reader/writer.<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> timeoutMillis = conf.getInt("hbase.hlog.open.timeout", 300000);<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> /* TODO Both of these are probably specific to the fs wal provider */<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> walStreamReaderClass = conf.getClass(WAL_STREAM_READER_CLASS_IMPL,<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> ProtobufWALStreamReader.class, WALStreamReader.class);<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> Preconditions.checkArgument(<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> AbstractFSWALProvider.Initializer.class.isAssignableFrom(walStreamReaderClass),<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> "The wal stream reader class %s is not a sub class of %s", walStreamReaderClass.getName(),<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> AbstractFSWALProvider.Initializer.class.getName());<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> this.conf = conf;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> // end required early initialization<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // this instance can't create wals, just reader/writers.<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> provider = null;<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> factoryId = SINGLETON_ID;<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> this.abortable = null;<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> this.excludeDatanodeManager = new ExcludeDatanodeManager(conf);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> this.metaProvider = null;<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> this.replicationProvider = null;<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> Providers getDefaultProvider() {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> return Providers.defaultProvider;<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span><a name="line.164"></a> |
| <span class="sourceLineNo">165</span> Class<? extends WALProvider> getProviderClass(String key, String defaultValue) {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> try {<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> Providers provider = Providers.valueOf(conf.get(key, defaultValue));<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> // AsyncFSWALProvider is not guaranteed to work on all Hadoop versions, when it's chosen as<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> // the default and we can't use it, we want to fall back to FSHLog which we know works on<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> // all versions.<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> if (<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> provider == getDefaultProvider() && provider.clazz == AsyncFSWALProvider.class<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> && !AsyncFSWALProvider.load()<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> ) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> // AsyncFSWAL has better performance in most cases, and also uses less resources, we will<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> // try to use it if possible. It deeply hacks into the internal of DFSClient so will be<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> // easily broken when upgrading hadoop.<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> LOG.warn("Failed to load AsyncFSWALProvider, falling back to FSHLogProvider");<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> return FSHLogProvider.class;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> // N.b. If the user specifically requested AsyncFSWALProvider but their environment doesn't<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> // support using it (e.g. AsyncFSWALProvider.load() == false), we should let this fail and<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> // not fall back to FSHLogProvider.<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> return provider.clazz;<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> } catch (IllegalArgumentException exception) {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> // Fall back to them specifying a class name<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> // Note that the passed default class shouldn't actually be used, since the above only fails<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> // when there is a config value present.<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> return conf.getClass(key, Providers.defaultProvider.clazz, WALProvider.class);<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> }<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> static WALProvider createProvider(Class<? extends WALProvider> clazz) throws IOException {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> LOG.info("Instantiating WALProvider of type {}", clazz);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> try {<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> return clazz.getDeclaredConstructor().newInstance();<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> } catch (Exception e) {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> LOG.error("couldn't set up WALProvider, the configured class is " + clazz);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> LOG.debug("Exception details for failure to load WALProvider.", e);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> throw new IOException("couldn't set up WALProvider", e);<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> }<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> * Create a WALFactory.<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> allowedOnPath = ".*/src/test/.*|.*/HBaseTestingUtility.java")<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> public WALFactory(Configuration conf, String factoryId) throws IOException {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> // default enableSyncReplicationWALProvider is true, only disable SyncReplicationWALProvider<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> // for HMaster or HRegionServer which take system table only. See HBASE-19999<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> this(conf, factoryId, null);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> }<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> /**<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> * Create a WALFactory.<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> * <p/><a name="line.219"></a> |
| <span class="sourceLineNo">220</span> * This is the constructor you should use when creating a WALFactory in normal code, to make sure<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * that the {@code factoryId} is the server name. We need this assumption in some places for<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> * parsing the server name out from the wal file name.<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> * @param conf must not be null, will keep a reference to read params in later reader/writer<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> * instances.<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * @param serverName use to generate the factoryId, which will be append at the first of the final<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * file name<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * @param abortable the server associated with this WAL file<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> */<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> public WALFactory(Configuration conf, ServerName serverName, Abortable abortable)<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> throws IOException {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> this(conf, serverName.toString(), abortable);<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span><a name="line.233"></a> |
| <span class="sourceLineNo">234</span> /**<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> * @param conf must not be null, will keep a reference to read params in later reader/writer<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * instances.<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> * @param factoryId a unique identifier for this factory. used i.e. by filesystem implementations<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> * to make a directory<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> * @param abortable the server associated with this WAL file<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> */<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> private WALFactory(Configuration conf, String factoryId, Abortable abortable) throws IOException {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> // until we've moved reader/writer construction down into providers, this initialization must<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> // happen prior to provider initialization, in case they need to instantiate a reader/writer.<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> timeoutMillis = conf.getInt("hbase.hlog.open.timeout", 300000);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> /* TODO Both of these are probably specific to the fs wal provider */<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> walStreamReaderClass = conf.getClass(WAL_STREAM_READER_CLASS_IMPL,<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> ProtobufWALStreamReader.class, WALStreamReader.class);<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> Preconditions.checkArgument(<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> AbstractFSWALProvider.Initializer.class.isAssignableFrom(walStreamReaderClass),<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> "The wal stream reader class %s is not a sub class of %s", walStreamReaderClass.getName(),<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> AbstractFSWALProvider.Initializer.class.getName());<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> this.conf = conf;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> this.factoryId = factoryId;<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> this.excludeDatanodeManager = new ExcludeDatanodeManager(conf);<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> this.abortable = abortable;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> this.metaProvider = new LazyInitializedWALProvider(this,<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> AbstractFSWALProvider.META_WAL_PROVIDER_ID, META_WAL_PROVIDER, this.abortable);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> this.replicationProvider = new LazyInitializedWALProvider(this, REPLICATION_WAL_PROVIDER_ID,<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> REPLICATION_WAL_PROVIDER, this.abortable);<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> // end required early initialization<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> if (conf.getBoolean(WAL_ENABLED, true)) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> WALProvider provider = createProvider(getProviderClass(WAL_PROVIDER, DEFAULT_WAL_PROVIDER));<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> provider.init(this, conf, null, this.abortable);<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> provider.addWALActionsListener(new MetricsWAL());<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> this.provider = provider;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> } else {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> // special handling of existing configuration behavior.<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> LOG.warn("Running with WAL disabled.");<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> provider = new DisabledWALProvider();<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> provider.init(this, conf, factoryId, null);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> }<a name="line.272"></a> |
| <span class="sourceLineNo">273</span><a name="line.273"></a> |
| <span class="sourceLineNo">274</span> public Configuration getConf() {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> return conf;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> }<a name="line.276"></a> |
| <span class="sourceLineNo">277</span><a name="line.277"></a> |
| <span class="sourceLineNo">278</span> /**<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> * Shutdown all WALs and clean up any underlying storage. Use only when you will not need to<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> * replay and edits that have gone to any wals from this factory.<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> */<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> public void close() throws IOException {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> List<IOException> ioes = new ArrayList<>();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> // these fields could be null if the WALFactory is created only for being used in the<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> // getInstance method.<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> if (metaProvider != null) {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> try {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> metaProvider.close();<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> } catch (IOException e) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> ioes.add(e);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> }<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> if (replicationProvider != null) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> try {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> replicationProvider.close();<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> } catch (IOException e) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> ioes.add(e);<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> }<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> if (provider != null) {<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> try {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> provider.close();<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> } catch (IOException e) {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> ioes.add(e);<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> }<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> if (!ioes.isEmpty()) {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> IOException ioe = new IOException("Failed to close WALFactory");<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> for (IOException e : ioes) {<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> ioe.addSuppressed(e);<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> }<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> throw ioe;<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> }<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> }<a name="line.314"></a> |
| <span class="sourceLineNo">315</span><a name="line.315"></a> |
| <span class="sourceLineNo">316</span> /**<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> * Tell the underlying WAL providers to shut down, but do not clean up underlying storage. If you<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> * are not ending cleanly and will need to replay edits from this factory's wals, use this method<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * if you can as it will try to leave things as tidy as possible.<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> */<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> public void shutdown() throws IOException {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> List<IOException> ioes = new ArrayList<>();<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> // these fields could be null if the WALFactory is created only for being used in the<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> // getInstance method.<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> if (metaProvider != null) {<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> try {<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> metaProvider.shutdown();<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> } catch (IOException e) {<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> ioes.add(e);<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> }<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> if (replicationProvider != null) {<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> try {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> replicationProvider.shutdown();<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> } catch (IOException e) {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> ioes.add(e);<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> }<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> if (provider != null) {<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> try {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> provider.shutdown();<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> } catch (IOException e) {<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> ioes.add(e);<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> }<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> }<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> if (!ioes.isEmpty()) {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> IOException ioe = new IOException("Failed to shutdown WALFactory");<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> for (IOException e : ioes) {<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> ioe.addSuppressed(e);<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> }<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> throw ioe;<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> }<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> }<a name="line.353"></a> |
| <span class="sourceLineNo">354</span><a name="line.354"></a> |
| <span class="sourceLineNo">355</span> public List<WAL> getWALs() {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> return provider.getWALs();<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> }<a name="line.357"></a> |
| <span class="sourceLineNo">358</span><a name="line.358"></a> |
| <span class="sourceLineNo">359</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> allowedOnPath = ".*/src/test/.*")<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> WALProvider getMetaProvider() throws IOException {<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> return metaProvider.getProvider();<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> }<a name="line.363"></a> |
| <span class="sourceLineNo">364</span><a name="line.364"></a> |
| <span class="sourceLineNo">365</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> allowedOnPath = ".*/src/test/.*")<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> WALProvider getReplicationProvider() throws IOException {<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> return replicationProvider.getProvider();<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> }<a name="line.369"></a> |
| <span class="sourceLineNo">370</span><a name="line.370"></a> |
| <span class="sourceLineNo">371</span> /**<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> * @param region the region which we want to get a WAL for. Could be null.<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> */<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> public WAL getWAL(RegionInfo region) throws IOException {<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> // Use different WAL for hbase:meta. Instantiates the meta WALProvider if not already up.<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> if (region != null && RegionReplicaUtil.isDefaultReplica(region)) {<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> if (region.isMetaRegion()) {<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> return metaProvider.getProvider().getWAL(region);<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> } else if (ReplicationStorageFactory.isReplicationQueueTable(conf, region.getTable())) {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return replicationProvider.getProvider().getWAL(region);<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> }<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> }<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> return provider.getWAL(region);<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> }<a name="line.384"></a> |
| <span class="sourceLineNo">385</span><a name="line.385"></a> |
| <span class="sourceLineNo">386</span> public WALStreamReader createStreamReader(FileSystem fs, Path path) throws IOException {<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> return createStreamReader(fs, path, (CancelableProgressable) null);<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> }<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> /**<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> * Create a one-way stream reader for the WAL.<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> * @return A WAL reader. Close when done with it.<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> */<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> public WALStreamReader createStreamReader(FileSystem fs, Path path,<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> CancelableProgressable reporter) throws IOException {<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> return createStreamReader(fs, path, reporter, -1);<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> }<a name="line.397"></a> |
| <span class="sourceLineNo">398</span><a name="line.398"></a> |
| <span class="sourceLineNo">399</span> /**<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> * Create a one-way stream reader for the WAL, and start reading from the given<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> * {@code startPosition}.<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> * @return A WAL reader. Close when done with it.<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> */<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> public WALStreamReader createStreamReader(FileSystem fs, Path path,<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> CancelableProgressable reporter, long startPosition) throws IOException {<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> try {<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> // A wal file could be under recovery, so it may take several<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> // tries to get it open. Instead of claiming it is corrupted, retry<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> // to open it up to 5 minutes by default.<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> long startWaiting = EnvironmentEdgeManager.currentTime();<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> long openTimeout = timeoutMillis + startWaiting;<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> int nbAttempt = 0;<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> WALStreamReader reader = null;<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> while (true) {<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> try {<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> reader = walStreamReaderClass.getDeclaredConstructor().newInstance();<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> ((AbstractFSWALProvider.Initializer) reader).init(fs, path, conf, startPosition);<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> return reader;<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> } catch (Exception e) {<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> // catch Exception so that we close reader for all exceptions. If we don't<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> // close the reader, we leak a socket.<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> if (reader != null) {<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> reader.close();<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> }<a name="line.424"></a> |
| <span class="sourceLineNo">425</span><a name="line.425"></a> |
| <span class="sourceLineNo">426</span> // Only inspect the Exception to consider retry when it's an IOException<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> if (e instanceof IOException) {<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> String msg = e.getMessage();<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> if (<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> msg != null && (msg.contains("Cannot obtain block length")<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> || msg.contains("Could not obtain the last block")<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> || msg.matches("Blocklist for [^ ]* has changed.*"))<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> ) {<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> if (++nbAttempt == 1) {<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> LOG.warn("Lease should have recovered. This is not expected. Will retry", e);<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> }<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> if (reporter != null && !reporter.progress()) {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> throw new InterruptedIOException("Operation is cancelled");<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> }<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> if (nbAttempt > 2 && openTimeout < EnvironmentEdgeManager.currentTime()) {<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> LOG.error("Can't open after " + nbAttempt + " attempts and "<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> + (EnvironmentEdgeManager.currentTime() - startWaiting) + "ms " + " for " + path);<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> } else {<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> try {<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> Thread.sleep(nbAttempt < 3 ? 500 : 1000);<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> continue; // retry<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> } catch (InterruptedException ie) {<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> InterruptedIOException iioe = new InterruptedIOException();<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> iioe.initCause(ie);<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> throw iioe;<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> }<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> }<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> throw new LeaseNotRecoveredException(e);<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> }<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> }<a name="line.455"></a> |
| <span class="sourceLineNo">456</span><a name="line.456"></a> |
| <span class="sourceLineNo">457</span> // Rethrow the original exception if we are not retrying due to HDFS-isms.<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> throw e;<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> }<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> }<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> } catch (IOException ie) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> throw ie;<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> } catch (Exception e) {<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> throw new IOException("Cannot get log reader", e);<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> }<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> }<a name="line.466"></a> |
| <span class="sourceLineNo">467</span><a name="line.467"></a> |
| <span class="sourceLineNo">468</span> /**<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> * Create a writer for the WAL. Uses defaults.<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> * <p><a name="line.470"></a> |
| <span class="sourceLineNo">471</span> * Should be package-private. public only for tests and<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> * {@link org.apache.hadoop.hbase.regionserver.wal.Compressor}<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> * @return A WAL writer. Close when done with it.<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> */<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> public Writer createWALWriter(final FileSystem fs, final Path path) throws IOException {<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> return FSHLogProvider.createWriter(conf, fs, path, false);<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> }<a name="line.477"></a> |
| <span class="sourceLineNo">478</span><a name="line.478"></a> |
| <span class="sourceLineNo">479</span> /**<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> * Should be package-private, visible for recovery testing. Uses defaults.<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> * @return an overwritable writer for recovered edits. caller should close.<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> */<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> public Writer createRecoveredEditsWriter(final FileSystem fs, final Path path)<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> throws IOException {<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> return FSHLogProvider.createWriter(conf, fs, path, true);<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> }<a name="line.486"></a> |
| <span class="sourceLineNo">487</span><a name="line.487"></a> |
| <span class="sourceLineNo">488</span> // These static methods are currently used where it's impractical to<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> // untangle the reliance on state in the filesystem. They rely on singleton<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> // WALFactory that just provides Reader / Writers.<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> // For now, first Configuration object wins. Practically this just impacts the reader/writer class<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> private static final AtomicReference<WALFactory> singleton = new AtomicReference<>();<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> private static final String SINGLETON_ID = WALFactory.class.getName();<a name="line.493"></a> |
| <span class="sourceLineNo">494</span><a name="line.494"></a> |
| <span class="sourceLineNo">495</span> // Public only for FSHLog<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> public static WALFactory getInstance(Configuration configuration) {<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> WALFactory factory = singleton.get();<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> if (null == factory) {<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> WALFactory temp = new WALFactory(configuration);<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> if (singleton.compareAndSet(null, temp)) {<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> factory = temp;<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> } else {<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> // someone else beat us to initializing<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> try {<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> temp.close();<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> } catch (IOException exception) {<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> LOG.debug("failed to close temporary singleton. ignoring.", exception);<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> }<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> factory = singleton.get();<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> }<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> }<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> return factory;<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> }<a name="line.513"></a> |
| <span class="sourceLineNo">514</span><a name="line.514"></a> |
| <span class="sourceLineNo">515</span> /**<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> * Create a tailing reader for the given path. Mainly used in replication.<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> */<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> public static WALTailingReader createTailingReader(FileSystem fs, Path path, Configuration conf,<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> long startPosition) throws IOException {<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> ProtobufWALTailingReader reader = new ProtobufWALTailingReader();<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> reader.init(fs, path, conf, startPosition);<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> return reader;<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> }<a name="line.523"></a> |
| <span class="sourceLineNo">524</span><a name="line.524"></a> |
| <span class="sourceLineNo">525</span> /**<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> * Create a one-way stream reader for a given path.<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> */<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> public static WALStreamReader createStreamReader(FileSystem fs, Path path, Configuration conf)<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> throws IOException {<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> return createStreamReader(fs, path, conf, -1);<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> }<a name="line.531"></a> |
| <span class="sourceLineNo">532</span><a name="line.532"></a> |
| <span class="sourceLineNo">533</span> /**<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> * Create a one-way stream reader for a given path.<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> */<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> public static WALStreamReader createStreamReader(FileSystem fs, Path path, Configuration conf,<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> long startPosition) throws IOException {<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> return getInstance(conf).createStreamReader(fs, path, (CancelableProgressable) null,<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> startPosition);<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> }<a name="line.540"></a> |
| <span class="sourceLineNo">541</span><a name="line.541"></a> |
| <span class="sourceLineNo">542</span> /**<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> * If you already have a WALFactory, you should favor the instance method. Uses defaults.<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> * @return a Writer that will overwrite files. Caller must close.<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> */<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> static Writer createRecoveredEditsWriter(final FileSystem fs, final Path path,<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> final Configuration configuration) throws IOException {<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> return FSHLogProvider.createWriter(configuration, fs, path, true);<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> }<a name="line.549"></a> |
| <span class="sourceLineNo">550</span><a name="line.550"></a> |
| <span class="sourceLineNo">551</span> /**<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> * If you already have a WALFactory, you should favor the instance method. Uses defaults.<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> * @return a writer that won't overwrite files. Caller must close.<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> */<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> public static Writer createWALWriter(final FileSystem fs, final Path path,<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> final Configuration configuration) throws IOException {<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> return FSHLogProvider.createWriter(configuration, fs, path, false);<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> }<a name="line.558"></a> |
| <span class="sourceLineNo">559</span><a name="line.559"></a> |
| <span class="sourceLineNo">560</span> public WALProvider getWALProvider() {<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> return this.provider;<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> }<a name="line.562"></a> |
| <span class="sourceLineNo">563</span><a name="line.563"></a> |
| <span class="sourceLineNo">564</span> /**<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> * Returns all the wal providers, for example, the default one, the one for hbase:meta and the one<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> * for hbase:replication.<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> */<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> public List<WALProvider> getAllWALProviders() {<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> List<WALProvider> providers = new ArrayList<>();<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> if (provider != null) {<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> providers.add(provider);<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> }<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> WALProvider meta = metaProvider.getProviderNoCreate();<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> if (meta != null) {<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> providers.add(meta);<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> }<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> WALProvider replication = replicationProvider.getProviderNoCreate();<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> if (replication != null) {<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> providers.add(replication);<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> }<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> return providers;<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> }<a name="line.582"></a> |
| <span class="sourceLineNo">583</span><a name="line.583"></a> |
| <span class="sourceLineNo">584</span> public ExcludeDatanodeManager getExcludeDatanodeManager() {<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> return excludeDatanodeManager;<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> }<a name="line.586"></a> |
| <span class="sourceLineNo">587</span><a name="line.587"></a> |
| <span class="sourceLineNo">588</span> @RestrictedApi(explanation = "Should only be called in tests", link = "",<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> allowedOnPath = ".*/src/test/.*")<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> public String getFactoryId() {<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> return this.factoryId;<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> }<a name="line.592"></a> |
| <span class="sourceLineNo">593</span>}<a name="line.593"></a> |
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| </div> |
| </body> |
| </html> |
