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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/11/21 14:53:25 UTC
[05/17] hbase-site git commit: Published site at
5cc845b713853645f1e25b29caa556d79cfdc551.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/de8c44eb/devapidocs/src-html/org/apache/hadoop/hbase/wal/AbstractFSWALProvider.Reader.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/wal/AbstractFSWALProvider.Reader.html b/devapidocs/src-html/org/apache/hadoop/hbase/wal/AbstractFSWALProvider.Reader.html
index 88afb3f..6171b5d 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/wal/AbstractFSWALProvider.Reader.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/wal/AbstractFSWALProvider.Reader.html
@@ -32,523 +32,537 @@
<span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Objects;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.regex.Matcher;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.regex.Pattern;<a name="line.28"></a>
-<span class="sourceLineNo">029</span><a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.fs.FileSystem;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.fs.Path;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.HConstants;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.ServerName;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.slf4j.Logger;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.slf4j.LoggerFactory;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.util.CancelableProgressable;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.LeaseNotRecoveredException;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<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> * Base class of a WAL Provider that returns a single thread safe WAL that writes to Hadoop FS. By<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * default, this implementation picks a directory in Hadoop FS based on a combination of<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * <ul><a name="line.51"></a>
-<span class="sourceLineNo">052</span> * <li>the HBase root directory<a name="line.52"></a>
-<span class="sourceLineNo">053</span> * <li>HConstants.HREGION_LOGDIR_NAME<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * <li>the given factory's factoryId (usually identifying the regionserver by host:port)<a name="line.54"></a>
-<span class="sourceLineNo">055</span> * </ul><a name="line.55"></a>
-<span class="sourceLineNo">056</span> * It also uses the providerId to differentiate among files.<a name="line.56"></a>
-<span class="sourceLineNo">057</span> */<a name="line.57"></a>
-<span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a>
-<span class="sourceLineNo">059</span>@InterfaceStability.Evolving<a name="line.59"></a>
-<span class="sourceLineNo">060</span>public abstract class AbstractFSWALProvider<T extends AbstractFSWAL<?>> implements WALProvider {<a name="line.60"></a>
-<span class="sourceLineNo">061</span><a name="line.61"></a>
-<span class="sourceLineNo">062</span> private static final Logger LOG = LoggerFactory.getLogger(AbstractFSWALProvider.class);<a name="line.62"></a>
-<span class="sourceLineNo">063</span><a name="line.63"></a>
-<span class="sourceLineNo">064</span> /** Separate old log into different dir by regionserver name **/<a name="line.64"></a>
-<span class="sourceLineNo">065</span> public static final String SEPARATE_OLDLOGDIR = "hbase.separate.oldlogdir.by.regionserver";<a name="line.65"></a>
-<span class="sourceLineNo">066</span> public static final boolean DEFAULT_SEPARATE_OLDLOGDIR = false;<a name="line.66"></a>
-<span class="sourceLineNo">067</span><a name="line.67"></a>
-<span class="sourceLineNo">068</span> // Only public so classes back in regionserver.wal can access<a name="line.68"></a>
-<span class="sourceLineNo">069</span> public interface Reader extends WAL.Reader {<a name="line.69"></a>
-<span class="sourceLineNo">070</span> /**<a name="line.70"></a>
-<span class="sourceLineNo">071</span> * @param fs File system.<a name="line.71"></a>
-<span class="sourceLineNo">072</span> * @param path Path.<a name="line.72"></a>
-<span class="sourceLineNo">073</span> * @param c Configuration.<a name="line.73"></a>
-<span class="sourceLineNo">074</span> * @param s Input stream that may have been pre-opened by the caller; may be null.<a name="line.74"></a>
-<span class="sourceLineNo">075</span> */<a name="line.75"></a>
-<span class="sourceLineNo">076</span> void init(FileSystem fs, Path path, Configuration c, FSDataInputStream s) throws IOException;<a name="line.76"></a>
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-<span class="sourceLineNo">078</span><a name="line.78"></a>
-<span class="sourceLineNo">079</span> protected volatile T wal;<a name="line.79"></a>
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-<span class="sourceLineNo">081</span> protected Configuration conf;<a name="line.81"></a>
-<span class="sourceLineNo">082</span> protected List<WALActionsListener> listeners = new ArrayList<>();<a name="line.82"></a>
-<span class="sourceLineNo">083</span> protected String providerId;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> protected AtomicBoolean initialized = new AtomicBoolean(false);<a name="line.84"></a>
-<span class="sourceLineNo">085</span> // for default wal provider, logPrefix won't change<a name="line.85"></a>
-<span class="sourceLineNo">086</span> protected String logPrefix;<a name="line.86"></a>
-<span class="sourceLineNo">087</span><a name="line.87"></a>
-<span class="sourceLineNo">088</span> /**<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * we synchronized on walCreateLock to prevent wal recreation in different threads<a name="line.89"></a>
-<span class="sourceLineNo">090</span> */<a name="line.90"></a>
-<span class="sourceLineNo">091</span> private final Object walCreateLock = new Object();<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span> /**<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * @param factory factory that made us, identity used for FS layout. may not be null<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * @param conf may not be null<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param providerId differentiate between providers from one factory, used for FS layout. may be<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * null<a name="line.97"></a>
-<span class="sourceLineNo">098</span> */<a name="line.98"></a>
-<span class="sourceLineNo">099</span> @Override<a name="line.99"></a>
-<span class="sourceLineNo">100</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.100"></a>
-<span class="sourceLineNo">101</span> if (!initialized.compareAndSet(false, true)) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.factory = factory;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.conf = conf;<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.providerId = providerId;<a name="line.106"></a>
-<span class="sourceLineNo">107</span> // get log prefix<a name="line.107"></a>
-<span class="sourceLineNo">108</span> StringBuilder sb = new StringBuilder().append(factory.factoryId);<a name="line.108"></a>
-<span class="sourceLineNo">109</span> if (providerId != null) {<a name="line.109"></a>
-<span class="sourceLineNo">110</span> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {<a name="line.110"></a>
-<span class="sourceLineNo">111</span> sb.append(providerId);<a name="line.111"></a>
-<span class="sourceLineNo">112</span> } else {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);<a name="line.113"></a>
-<span class="sourceLineNo">114</span> }<a name="line.114"></a>
-<span class="sourceLineNo">115</span> }<a name="line.115"></a>
-<span class="sourceLineNo">116</span> logPrefix = sb.toString();<a name="line.116"></a>
-<span class="sourceLineNo">117</span> doInit(conf);<a name="line.117"></a>
-<span class="sourceLineNo">118</span> }<a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span> @Override<a name="line.120"></a>
-<span class="sourceLineNo">121</span> public List<WAL> getWALs() {<a name="line.121"></a>
-<span class="sourceLineNo">122</span> if (wal == null) {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> return Collections.emptyList();<a name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span> List<WAL> wals = new ArrayList<>(1);<a name="line.125"></a>
-<span class="sourceLineNo">126</span> wals.add(wal);<a name="line.126"></a>
-<span class="sourceLineNo">127</span> return wals;<a name="line.127"></a>
-<span class="sourceLineNo">128</span> }<a name="line.128"></a>
-<span class="sourceLineNo">129</span><a name="line.129"></a>
-<span class="sourceLineNo">130</span> @Override<a name="line.130"></a>
-<span class="sourceLineNo">131</span> public T getWAL(RegionInfo region) throws IOException {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> T walCopy = wal;<a name="line.132"></a>
-<span class="sourceLineNo">133</span> if (walCopy == null) {<a name="line.133"></a>
-<span class="sourceLineNo">134</span> // only lock when need to create wal, and need to lock since<a name="line.134"></a>
-<span class="sourceLineNo">135</span> // creating hlog on fs is time consuming<a name="line.135"></a>
-<span class="sourceLineNo">136</span> synchronized (walCreateLock) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span> walCopy = wal;<a name="line.137"></a>
-<span class="sourceLineNo">138</span> if (walCopy == null) {<a name="line.138"></a>
-<span class="sourceLineNo">139</span> walCopy = createWAL();<a name="line.139"></a>
-<span class="sourceLineNo">140</span> boolean succ = false;<a name="line.140"></a>
-<span class="sourceLineNo">141</span> try {<a name="line.141"></a>
-<span class="sourceLineNo">142</span> walCopy.init();<a name="line.142"></a>
-<span class="sourceLineNo">143</span> succ = true;<a name="line.143"></a>
-<span class="sourceLineNo">144</span> } finally {<a name="line.144"></a>
-<span class="sourceLineNo">145</span> if (!succ) {<a name="line.145"></a>
-<span class="sourceLineNo">146</span> walCopy.close();<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span> }<a name="line.148"></a>
-<span class="sourceLineNo">149</span> wal = walCopy;<a name="line.149"></a>
-<span class="sourceLineNo">150</span> }<a name="line.150"></a>
-<span class="sourceLineNo">151</span> }<a name="line.151"></a>
-<span class="sourceLineNo">152</span> }<a name="line.152"></a>
-<span class="sourceLineNo">153</span> return walCopy;<a name="line.153"></a>
-<span class="sourceLineNo">154</span> }<a name="line.154"></a>
-<span class="sourceLineNo">155</span><a name="line.155"></a>
-<span class="sourceLineNo">156</span> protected abstract T createWAL() throws IOException;<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> protected abstract void doInit(Configuration conf) throws IOException;<a name="line.158"></a>
-<span class="sourceLineNo">159</span><a name="line.159"></a>
-<span class="sourceLineNo">160</span> @Override<a name="line.160"></a>
-<span class="sourceLineNo">161</span> public void shutdown() throws IOException {<a name="line.161"></a>
-<span class="sourceLineNo">162</span> T log = this.wal;<a name="line.162"></a>
-<span class="sourceLineNo">163</span> if (log != null) {<a name="line.163"></a>
-<span class="sourceLineNo">164</span> log.shutdown();<a name="line.164"></a>
-<span class="sourceLineNo">165</span> }<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 close() throws IOException {<a name="line.169"></a>
-<span class="sourceLineNo">170</span> T log = this.wal;<a name="line.170"></a>
-<span class="sourceLineNo">171</span> if (log != null) {<a name="line.171"></a>
-<span class="sourceLineNo">172</span> log.close();<a name="line.172"></a>
-<span class="sourceLineNo">173</span> }<a name="line.173"></a>
-<span class="sourceLineNo">174</span> }<a name="line.174"></a>
-<span class="sourceLineNo">175</span><a name="line.175"></a>
-<span class="sourceLineNo">176</span> /**<a name="line.176"></a>
-<span class="sourceLineNo">177</span> * iff the given WALFactory is using the DefaultWALProvider for meta and/or non-meta, count the<a name="line.177"></a>
-<span class="sourceLineNo">178</span> * number of files (rolled and active). if either of them aren't, count 0 for that provider.<a name="line.178"></a>
-<span class="sourceLineNo">179</span> */<a name="line.179"></a>
-<span class="sourceLineNo">180</span> @Override<a name="line.180"></a>
-<span class="sourceLineNo">181</span> public long getNumLogFiles() {<a name="line.181"></a>
-<span class="sourceLineNo">182</span> T log = this.wal;<a name="line.182"></a>
-<span class="sourceLineNo">183</span> return log == null ? 0 : log.getNumLogFiles();<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> * iff the given WALFactory is using the DefaultWALProvider for meta and/or non-meta, count the<a name="line.187"></a>
-<span class="sourceLineNo">188</span> * size of files (only rolled). if either of them aren't, count 0 for that provider.<a name="line.188"></a>
-<span class="sourceLineNo">189</span> */<a name="line.189"></a>
-<span class="sourceLineNo">190</span> @Override<a name="line.190"></a>
-<span class="sourceLineNo">191</span> public long getLogFileSize() {<a name="line.191"></a>
-<span class="sourceLineNo">192</span> T log = this.wal;<a name="line.192"></a>
-<span class="sourceLineNo">193</span> return log == null ? 0 : log.getLogFileSize();<a name="line.193"></a>
-<span class="sourceLineNo">194</span> }<a name="line.194"></a>
-<span class="sourceLineNo">195</span><a name="line.195"></a>
-<span class="sourceLineNo">196</span> /**<a name="line.196"></a>
-<span class="sourceLineNo">197</span> * returns the number of rolled WAL files.<a name="line.197"></a>
-<span class="sourceLineNo">198</span> */<a name="line.198"></a>
-<span class="sourceLineNo">199</span> @VisibleForTesting<a name="line.199"></a>
-<span class="sourceLineNo">200</span> public static int getNumRolledLogFiles(WAL wal) {<a name="line.200"></a>
-<span class="sourceLineNo">201</span> return ((AbstractFSWAL<?>) wal).getNumRolledLogFiles();<a name="line.201"></a>
-<span class="sourceLineNo">202</span> }<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> * returns the size of rolled WAL files.<a name="line.205"></a>
-<span class="sourceLineNo">206</span> */<a name="line.206"></a>
-<span class="sourceLineNo">207</span> @VisibleForTesting<a name="line.207"></a>
-<span class="sourceLineNo">208</span> public static long getLogFileSize(WAL wal) {<a name="line.208"></a>
-<span class="sourceLineNo">209</span> return ((AbstractFSWAL<?>) wal).getLogFileSize();<a name="line.209"></a>
-<span class="sourceLineNo">210</span> }<a name="line.210"></a>
-<span class="sourceLineNo">211</span><a name="line.211"></a>
-<span class="sourceLineNo">212</span> /**<a name="line.212"></a>
-<span class="sourceLineNo">213</span> * return the current filename from the current wal.<a name="line.213"></a>
-<span class="sourceLineNo">214</span> */<a name="line.214"></a>
-<span class="sourceLineNo">215</span> @VisibleForTesting<a name="line.215"></a>
-<span class="sourceLineNo">216</span> public static Path getCurrentFileName(final WAL wal) {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> return ((AbstractFSWAL<?>) wal).getCurrentFileName();<a name="line.217"></a>
-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span><a name="line.219"></a>
-<span class="sourceLineNo">220</span> /**<a name="line.220"></a>
-<span class="sourceLineNo">221</span> * request a log roll, but don't actually do it.<a name="line.221"></a>
-<span class="sourceLineNo">222</span> */<a name="line.222"></a>
-<span class="sourceLineNo">223</span> @VisibleForTesting<a name="line.223"></a>
-<span class="sourceLineNo">224</span> static void requestLogRoll(final WAL wal) {<a name="line.224"></a>
-<span class="sourceLineNo">225</span> ((AbstractFSWAL<?>) wal).requestLogRoll();<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span><a name="line.227"></a>
-<span class="sourceLineNo">228</span> // should be package private; more visible for use in AbstractFSWAL<a name="line.228"></a>
-<span class="sourceLineNo">229</span> public static final String WAL_FILE_NAME_DELIMITER = ".";<a name="line.229"></a>
-<span class="sourceLineNo">230</span> /** The hbase:meta region's WAL filename extension */<a name="line.230"></a>
-<span class="sourceLineNo">231</span> @VisibleForTesting<a name="line.231"></a>
-<span class="sourceLineNo">232</span> public static final String META_WAL_PROVIDER_ID = ".meta";<a name="line.232"></a>
-<span class="sourceLineNo">233</span> static final String DEFAULT_PROVIDER_ID = "default";<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span> // Implementation details that currently leak in tests or elsewhere follow<a name="line.235"></a>
-<span class="sourceLineNo">236</span> /** File Extension used while splitting an WAL into regions (HBASE-2312) */<a name="line.236"></a>
-<span class="sourceLineNo">237</span> public static final String SPLITTING_EXT = "-splitting";<a name="line.237"></a>
-<span class="sourceLineNo">238</span><a name="line.238"></a>
-<span class="sourceLineNo">239</span> /**<a name="line.239"></a>
-<span class="sourceLineNo">240</span> * It returns the file create timestamp from the file name. For name format see<a name="line.240"></a>
-<span class="sourceLineNo">241</span> * {@link #validateWALFilename(String)} public until remaining tests move to o.a.h.h.wal<a name="line.241"></a>
-<span class="sourceLineNo">242</span> * @param wal must not be null<a name="line.242"></a>
-<span class="sourceLineNo">243</span> * @return the file number that is part of the WAL file name<a name="line.243"></a>
-<span class="sourceLineNo">244</span> */<a name="line.244"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.locks.ReadWriteLock;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.regex.Matcher;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.regex.Pattern;<a name="line.30"></a>
+<span class="sourceLineNo">031</span><a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configuration;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.fs.FSDataInputStream;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.fs.FileSystem;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.fs.Path;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HConstants;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ServerName;<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.yetus.audience.InterfaceAudience;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.slf4j.Logger;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.slf4j.LoggerFactory;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.regionserver.wal.WALActionsListener;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.util.CancelableProgressable;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.util.LeaseNotRecoveredException;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.49"></a>
+<span class="sourceLineNo">050</span><a name="line.50"></a>
+<span class="sourceLineNo">051</span>/**<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * Base class of a WAL Provider that returns a single thread safe WAL that writes to Hadoop FS. By<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * default, this implementation picks a directory in Hadoop FS based on a combination of<a name="line.53"></a>
+<span class="sourceLineNo">054</span> * <ul><a name="line.54"></a>
+<span class="sourceLineNo">055</span> * <li>the HBase root directory<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * <li>HConstants.HREGION_LOGDIR_NAME<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * <li>the given factory's factoryId (usually identifying the regionserver by host:port)<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * </ul><a name="line.58"></a>
+<span class="sourceLineNo">059</span> * It also uses the providerId to differentiate among files.<a name="line.59"></a>
+<span class="sourceLineNo">060</span> */<a name="line.60"></a>
+<span class="sourceLineNo">061</span>@InterfaceAudience.Private<a name="line.61"></a>
+<span class="sourceLineNo">062</span>@InterfaceStability.Evolving<a name="line.62"></a>
+<span class="sourceLineNo">063</span>public abstract class AbstractFSWALProvider<T extends AbstractFSWAL<?>> implements WALProvider {<a name="line.63"></a>
+<span class="sourceLineNo">064</span><a name="line.64"></a>
+<span class="sourceLineNo">065</span> private static final Logger LOG = LoggerFactory.getLogger(AbstractFSWALProvider.class);<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span> /** Separate old log into different dir by regionserver name **/<a name="line.67"></a>
+<span class="sourceLineNo">068</span> public static final String SEPARATE_OLDLOGDIR = "hbase.separate.oldlogdir.by.regionserver";<a name="line.68"></a>
+<span class="sourceLineNo">069</span> public static final boolean DEFAULT_SEPARATE_OLDLOGDIR = false;<a name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span> // Only public so classes back in regionserver.wal can access<a name="line.71"></a>
+<span class="sourceLineNo">072</span> public interface Reader extends WAL.Reader {<a name="line.72"></a>
+<span class="sourceLineNo">073</span> /**<a name="line.73"></a>
+<span class="sourceLineNo">074</span> * @param fs File system.<a name="line.74"></a>
+<span class="sourceLineNo">075</span> * @param path Path.<a name="line.75"></a>
+<span class="sourceLineNo">076</span> * @param c Configuration.<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * @param s Input stream that may have been pre-opened by the caller; may be null.<a name="line.77"></a>
+<span class="sourceLineNo">078</span> */<a name="line.78"></a>
+<span class="sourceLineNo">079</span> void init(FileSystem fs, Path path, Configuration c, FSDataInputStream s) throws IOException;<a name="line.79"></a>
+<span class="sourceLineNo">080</span> }<a name="line.80"></a>
+<span class="sourceLineNo">081</span><a name="line.81"></a>
+<span class="sourceLineNo">082</span> protected volatile T wal;<a name="line.82"></a>
+<span class="sourceLineNo">083</span> protected WALFactory factory;<a name="line.83"></a>
+<span class="sourceLineNo">084</span> protected Configuration conf;<a name="line.84"></a>
+<span class="sourceLineNo">085</span> protected List<WALActionsListener> listeners = new ArrayList<>();<a name="line.85"></a>
+<span class="sourceLineNo">086</span> protected String providerId;<a name="line.86"></a>
+<span class="sourceLineNo">087</span> protected AtomicBoolean initialized = new AtomicBoolean(false);<a name="line.87"></a>
+<span class="sourceLineNo">088</span> // for default wal provider, logPrefix won't change<a name="line.88"></a>
+<span class="sourceLineNo">089</span> protected String logPrefix;<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> /**<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * We use walCreateLock to prevent wal recreation in different threads, and also prevent getWALs<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * missing the newly created WAL, see HBASE-21503 for more details.<a name="line.93"></a>
+<span class="sourceLineNo">094</span> */<a name="line.94"></a>
+<span class="sourceLineNo">095</span> private final ReadWriteLock walCreateLock = new ReentrantReadWriteLock();<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> /**<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * @param factory factory that made us, identity used for FS layout. may not be null<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * @param conf may not be null<a name="line.99"></a>
+<span class="sourceLineNo">100</span> * @param providerId differentiate between providers from one factory, used for FS layout. may be<a name="line.100"></a>
+<span class="sourceLineNo">101</span> * null<a name="line.101"></a>
+<span class="sourceLineNo">102</span> */<a name="line.102"></a>
+<span class="sourceLineNo">103</span> @Override<a name="line.103"></a>
+<span class="sourceLineNo">104</span> public void init(WALFactory factory, Configuration conf, String providerId) throws IOException {<a name="line.104"></a>
+<span class="sourceLineNo">105</span> if (!initialized.compareAndSet(false, true)) {<a name="line.105"></a>
+<span class="sourceLineNo">106</span> throw new IllegalStateException("WALProvider.init should only be called once.");<a name="line.106"></a>
+<span class="sourceLineNo">107</span> }<a name="line.107"></a>
+<span class="sourceLineNo">108</span> this.factory = factory;<a name="line.108"></a>
+<span class="sourceLineNo">109</span> this.conf = conf;<a name="line.109"></a>
+<span class="sourceLineNo">110</span> this.providerId = providerId;<a name="line.110"></a>
+<span class="sourceLineNo">111</span> // get log prefix<a name="line.111"></a>
+<span class="sourceLineNo">112</span> StringBuilder sb = new StringBuilder().append(factory.factoryId);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> if (providerId != null) {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> if (providerId.startsWith(WAL_FILE_NAME_DELIMITER)) {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> sb.append(providerId);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> } else {<a name="line.116"></a>
+<span class="sourceLineNo">117</span> sb.append(WAL_FILE_NAME_DELIMITER).append(providerId);<a name="line.117"></a>
+<span class="sourceLineNo">118</span> }<a name="line.118"></a>
+<span class="sourceLineNo">119</span> }<a name="line.119"></a>
+<span class="sourceLineNo">120</span> logPrefix = sb.toString();<a name="line.120"></a>
+<span class="sourceLineNo">121</span> doInit(conf);<a name="line.121"></a>
+<span class="sourceLineNo">122</span> }<a name="line.122"></a>
+<span class="sourceLineNo">123</span><a name="line.123"></a>
+<span class="sourceLineNo">124</span> @Override<a name="line.124"></a>
+<span class="sourceLineNo">125</span> public List<WAL> getWALs() {<a name="line.125"></a>
+<span class="sourceLineNo">126</span> if (wal != null) {<a name="line.126"></a>
+<span class="sourceLineNo">127</span> return Lists.newArrayList(wal);<a name="line.127"></a>
+<span class="sourceLineNo">128</span> }<a name="line.128"></a>
+<span class="sourceLineNo">129</span> walCreateLock.readLock().lock();<a name="line.129"></a>
+<span class="sourceLineNo">130</span> try {<a name="line.130"></a>
+<span class="sourceLineNo">131</span> if (wal == null) {<a name="line.131"></a>
+<span class="sourceLineNo">132</span> return Collections.emptyList();<a name="line.132"></a>
+<span class="sourceLineNo">133</span> } else {<a name="line.133"></a>
+<span class="sourceLineNo">134</span> return Lists.newArrayList(wal);<a name="line.134"></a>
+<span class="sourceLineNo">135</span> }<a name="line.135"></a>
+<span class="sourceLineNo">136</span> } finally {<a name="line.136"></a>
+<span class="sourceLineNo">137</span> walCreateLock.readLock().unlock();<a name="line.137"></a>
+<span class="sourceLineNo">138</span> }<a name="line.138"></a>
+<span class="sourceLineNo">139</span> }<a name="line.139"></a>
+<span class="sourceLineNo">140</span><a name="line.140"></a>
+<span class="sourceLineNo">141</span> @Override<a name="line.141"></a>
+<span class="sourceLineNo">142</span> public T getWAL(RegionInfo region) throws IOException {<a name="line.142"></a>
+<span class="sourceLineNo">143</span> T walCopy = wal;<a name="line.143"></a>
+<span class="sourceLineNo">144</span> if (walCopy != null) {<a name="line.144"></a>
+<span class="sourceLineNo">145</span> return walCopy;<a name="line.145"></a>
+<span class="sourceLineNo">146</span> }<a name="line.146"></a>
+<span class="sourceLineNo">147</span> walCreateLock.writeLock().lock();<a name="line.147"></a>
+<span class="sourceLineNo">148</span> try {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> walCopy = wal;<a name="line.149"></a>
+<span class="sourceLineNo">150</span> if (walCopy != null) {<a name="line.150"></a>
+<span class="sourceLineNo">151</span> return walCopy;<a name="line.151"></a>
+<span class="sourceLineNo">152</span> }<a name="line.152"></a>
+<span class="sourceLineNo">153</span> walCopy = createWAL();<a name="line.153"></a>
+<span class="sourceLineNo">154</span> boolean succ = false;<a name="line.154"></a>
+<span class="sourceLineNo">155</span> try {<a name="line.155"></a>
+<span class="sourceLineNo">156</span> walCopy.init();<a name="line.156"></a>
+<span class="sourceLineNo">157</span> succ = true;<a name="line.157"></a>
+<span class="sourceLineNo">158</span> } finally {<a name="line.158"></a>
+<span class="sourceLineNo">159</span> if (!succ) {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> walCopy.close();<a name="line.160"></a>
+<span class="sourceLineNo">161</span> }<a name="line.161"></a>
+<span class="sourceLineNo">162</span> }<a name="line.162"></a>
+<span class="sourceLineNo">163</span> wal = walCopy;<a name="line.163"></a>
+<span class="sourceLineNo">164</span> return walCopy;<a name="line.164"></a>
+<span class="sourceLineNo">165</span> } finally {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> walCreateLock.writeLock().unlock();<a name="line.166"></a>
+<span class="sourceLineNo">167</span> }<a name="line.167"></a>
+<span class="sourceLineNo">168</span> }<a name="line.168"></a>
+<span class="sourceLineNo">169</span><a name="line.169"></a>
+<span class="sourceLineNo">170</span> protected abstract T createWAL() throws IOException;<a name="line.170"></a>
+<span class="sourceLineNo">171</span><a name="line.171"></a>
+<span class="sourceLineNo">172</span> protected abstract void doInit(Configuration conf) throws IOException;<a name="line.172"></a>
+<span class="sourceLineNo">173</span><a name="line.173"></a>
+<span class="sourceLineNo">174</span> @Override<a name="line.174"></a>
+<span class="sourceLineNo">175</span> public void shutdown() throws IOException {<a name="line.175"></a>
+<span class="sourceLineNo">176</span> T log = this.wal;<a name="line.176"></a>
+<span class="sourceLineNo">177</span> if (log != null) {<a name="line.177"></a>
+<span class="sourceLineNo">178</span> log.shutdown();<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><a name="line.181"></a>
+<span class="sourceLineNo">182</span> @Override<a name="line.182"></a>
+<span class="sourceLineNo">183</span> public void close() throws IOException {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> T log = this.wal;<a name="line.184"></a>
+<span class="sourceLineNo">185</span> if (log != null) {<a name="line.185"></a>
+<span class="sourceLineNo">186</span> log.close();<a name="line.186"></a>
+<span class="sourceLineNo">187</span> }<a name="line.187"></a>
+<span class="sourceLineNo">188</span> }<a name="line.188"></a>
+<span class="sourceLineNo">189</span><a name="line.189"></a>
+<span class="sourceLineNo">190</span> /**<a name="line.190"></a>
+<span class="sourceLineNo">191</span> * iff the given WALFactory is using the DefaultWALProvider for meta and/or non-meta, count the<a name="line.191"></a>
+<span class="sourceLineNo">192</span> * number of files (rolled and active). if either of them aren't, count 0 for that provider.<a name="line.192"></a>
+<span class="sourceLineNo">193</span> */<a name="line.193"></a>
+<span class="sourceLineNo">194</span> @Override<a name="line.194"></a>
+<span class="sourceLineNo">195</span> public long getNumLogFiles() {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> T log = this.wal;<a name="line.196"></a>
+<span class="sourceLineNo">197</span> return log == null ? 0 : log.getNumLogFiles();<a name="line.197"></a>
+<span class="sourceLineNo">198</span> }<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> * iff the given WALFactory is using the DefaultWALProvider for meta and/or non-meta, count the<a name="line.201"></a>
+<span class="sourceLineNo">202</span> * size of files (only rolled). if either of them aren't, count 0 for that provider.<a name="line.202"></a>
+<span class="sourceLineNo">203</span> */<a name="line.203"></a>
+<span class="sourceLineNo">204</span> @Override<a name="line.204"></a>
+<span class="sourceLineNo">205</span> public long getLogFileSize() {<a name="line.205"></a>
+<span class="sourceLineNo">206</span> T log = this.wal;<a name="line.206"></a>
+<span class="sourceLineNo">207</span> return log == null ? 0 : log.getLogFileSize();<a name="line.207"></a>
+<span class="sourceLineNo">208</span> }<a name="line.208"></a>
+<span class="sourceLineNo">209</span><a name="line.209"></a>
+<span class="sourceLineNo">210</span> /**<a name="line.210"></a>
+<span class="sourceLineNo">211</span> * returns the number of rolled WAL files.<a name="line.211"></a>
+<span class="sourceLineNo">212</span> */<a name="line.212"></a>
+<span class="sourceLineNo">213</span> @VisibleForTesting<a name="line.213"></a>
+<span class="sourceLineNo">214</span> public static int getNumRolledLogFiles(WAL wal) {<a name="line.214"></a>
+<span class="sourceLineNo">215</span> return ((AbstractFSWAL<?>) wal).getNumRolledLogFiles();<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> /**<a name="line.218"></a>
+<span class="sourceLineNo">219</span> * returns the size of rolled WAL files.<a name="line.219"></a>
+<span class="sourceLineNo">220</span> */<a name="line.220"></a>
+<span class="sourceLineNo">221</span> @VisibleForTesting<a name="line.221"></a>
+<span class="sourceLineNo">222</span> public static long getLogFileSize(WAL wal) {<a name="line.222"></a>
+<span class="sourceLineNo">223</span> return ((AbstractFSWAL<?>) wal).getLogFileSize();<a name="line.223"></a>
+<span class="sourceLineNo">224</span> }<a name="line.224"></a>
+<span class="sourceLineNo">225</span><a name="line.225"></a>
+<span class="sourceLineNo">226</span> /**<a name="line.226"></a>
+<span class="sourceLineNo">227</span> * return the current filename from the current wal.<a name="line.227"></a>
+<span class="sourceLineNo">228</span> */<a name="line.228"></a>
+<span class="sourceLineNo">229</span> @VisibleForTesting<a name="line.229"></a>
+<span class="sourceLineNo">230</span> public static Path getCurrentFileName(final WAL wal) {<a name="line.230"></a>
+<span class="sourceLineNo">231</span> return ((AbstractFSWAL<?>) wal).getCurrentFileName();<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> * request a log roll, but don't actually do it.<a name="line.235"></a>
+<span class="sourceLineNo">236</span> */<a name="line.236"></a>
+<span class="sourceLineNo">237</span> @VisibleForTesting<a name="line.237"></a>
+<span class="sourceLineNo">238</span> static void requestLogRoll(final WAL wal) {<a name="line.238"></a>
+<span class="sourceLineNo">239</span> ((AbstractFSWAL<?>) wal).requestLogRoll();<a name="line.239"></a>
+<span class="sourceLineNo">240</span> }<a name="line.240"></a>
+<span class="sourceLineNo">241</span><a name="line.241"></a>
+<span class="sourceLineNo">242</span> // should be package private; more visible for use in AbstractFSWAL<a name="line.242"></a>
+<span class="sourceLineNo">243</span> public static final String WAL_FILE_NAME_DELIMITER = ".";<a name="line.243"></a>
+<span class="sourceLineNo">244</span> /** The hbase:meta region's WAL filename extension */<a name="line.244"></a>
<span class="sourceLineNo">245</span> @VisibleForTesting<a name="line.245"></a>
-<span class="sourceLineNo">246</span> public static long extractFileNumFromWAL(final WAL wal) {<a name="line.246"></a>
-<span class="sourceLineNo">247</span> final Path walName = ((AbstractFSWAL<?>) wal).getCurrentFileName();<a name="line.247"></a>
-<span class="sourceLineNo">248</span> if (walName == null) {<a name="line.248"></a>
-<span class="sourceLineNo">249</span> throw new IllegalArgumentException("The WAL path couldn't be null");<a name="line.249"></a>
-<span class="sourceLineNo">250</span> }<a name="line.250"></a>
-<span class="sourceLineNo">251</span> Matcher matcher = WAL_FILE_NAME_PATTERN.matcher(walName.getName());<a name="line.251"></a>
-<span class="sourceLineNo">252</span> if (matcher.matches()) {<a name="line.252"></a>
-<span class="sourceLineNo">253</span> return Long.parseLong(matcher.group(2));<a name="line.253"></a>
-<span class="sourceLineNo">254</span> } else {<a name="line.254"></a>
-<span class="sourceLineNo">255</span> throw new IllegalArgumentException(walName.getName() + " is not a valid wal file name");<a name="line.255"></a>
-<span class="sourceLineNo">256</span> }<a name="line.256"></a>
-<span class="sourceLineNo">257</span> }<a name="line.257"></a>
-<span class="sourceLineNo">258</span><a name="line.258"></a>
-<span class="sourceLineNo">259</span> /**<a name="line.259"></a>
-<span class="sourceLineNo">260</span> * Pattern used to validate a WAL file name see {@link #validateWALFilename(String)} for<a name="line.260"></a>
-<span class="sourceLineNo">261</span> * description.<a name="line.261"></a>
-<span class="sourceLineNo">262</span> */<a name="line.262"></a>
-<span class="sourceLineNo">263</span> private static final Pattern WAL_FILE_NAME_PATTERN =<a name="line.263"></a>
-<span class="sourceLineNo">264</span> Pattern.compile("(.+)\\.(\\d+)(\\.[0-9A-Za-z]+)?");<a name="line.264"></a>
-<span class="sourceLineNo">265</span><a name="line.265"></a>
-<span class="sourceLineNo">266</span> /**<a name="line.266"></a>
-<span class="sourceLineNo">267</span> * A WAL file name is of the format: &lt;wal-name&gt;{@link #WAL_FILE_NAME_DELIMITER}<a name="line.267"></a>
-<span class="sourceLineNo">268</span> * &lt;file-creation-timestamp&gt;[.&lt;suffix&gt;]. provider-name is usually made up of a<a name="line.268"></a>
-<span class="sourceLineNo">269</span> * server-name and a provider-id<a name="line.269"></a>
-<span class="sourceLineNo">270</span> * @param filename name of the file to validate<a name="line.270"></a>
-<span class="sourceLineNo">271</span> * @return <tt>true</tt> if the filename matches an WAL, <tt>false</tt> otherwise<a name="line.271"></a>
-<span class="sourceLineNo">272</span> */<a name="line.272"></a>
-<span class="sourceLineNo">273</span> public static boolean validateWALFilename(String filename) {<a name="line.273"></a>
-<span class="sourceLineNo">274</span> return WAL_FILE_NAME_PATTERN.matcher(filename).matches();<a name="line.274"></a>
-<span class="sourceLineNo">275</span> }<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> * Construct the directory name for all WALs on a given server. Dir names currently look like this<a name="line.278"></a>
-<span class="sourceLineNo">279</span> * for WALs: <code>hbase//WALs/kalashnikov.att.net,61634,1486865297088</code>.<a name="line.279"></a>
-<span class="sourceLineNo">280</span> * @param serverName Server name formatted as described in {@link ServerName}<a name="line.280"></a>
-<span class="sourceLineNo">281</span> * @return the relative WAL directory name, e.g. <code>.logs/1.example.org,60030,12345</code> if<a name="line.281"></a>
-<span class="sourceLineNo">282</span> * <code>serverName</code> passed is <code>1.example.org,60030,12345</code><a name="line.282"></a>
-<span class="sourceLineNo">283</span> */<a name="line.283"></a>
-<span class="sourceLineNo">284</span> public static String getWALDirectoryName(final String serverName) {<a name="line.284"></a>
-<span class="sourceLineNo">285</span> StringBuilder dirName = new StringBuilder(HConstants.HREGION_LOGDIR_NAME);<a name="line.285"></a>
-<span class="sourceLineNo">286</span> dirName.append("/");<a name="line.286"></a>
-<span class="sourceLineNo">287</span> dirName.append(serverName);<a name="line.287"></a>
-<span class="sourceLineNo">288</span> return dirName.toString();<a name="line.288"></a>
+<span class="sourceLineNo">246</span> public static final String META_WAL_PROVIDER_ID = ".meta";<a name="line.246"></a>
+<span class="sourceLineNo">247</span> static final String DEFAULT_PROVIDER_ID = "default";<a name="line.247"></a>
+<span class="sourceLineNo">248</span><a name="line.248"></a>
+<span class="sourceLineNo">249</span> // Implementation details that currently leak in tests or elsewhere follow<a name="line.249"></a>
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+<span class="sourceLineNo">253</span> /**<a name="line.253"></a>
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+<span class="sourceLineNo">259</span> @VisibleForTesting<a name="line.259"></a>
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-<span class="sourceLineNo">292</span> * Construct the directory name for all old WALs on a given server. The default old WALs dir looks<a name="line.292"></a>
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