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Posted to commits@hbase.apache.org by gi...@apache.org on 2019/01/09 14:51:05 UTC
[20/51] [partial] hbase-site git commit: Published site at
620d70d6186fb800299bcc62ad7179fccfd1be41.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/aa3fb87f/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterWalManager.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterWalManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterWalManager.html
index 127b088..42abebf 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterWalManager.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterWalManager.html
@@ -44,367 +44,369 @@
<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.regionserver.wal.AbstractFSWAL;<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.FSUtils;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.wal.WALSplitter;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.slf4j.Logger;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.slf4j.LoggerFactory;<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> * This class abstracts a bunch of operations the HMaster needs<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * when splitting log files e.g. finding log files, dirs etc.<a name="line.50"></a>
-<span class="sourceLineNo">051</span> */<a name="line.51"></a>
-<span class="sourceLineNo">052</span>@InterfaceAudience.Private<a name="line.52"></a>
-<span class="sourceLineNo">053</span>public class MasterWalManager {<a name="line.53"></a>
-<span class="sourceLineNo">054</span> private static final Logger LOG = LoggerFactory.getLogger(MasterWalManager.class);<a name="line.54"></a>
-<span class="sourceLineNo">055</span><a name="line.55"></a>
-<span class="sourceLineNo">056</span> final static PathFilter META_FILTER = new PathFilter() {<a name="line.56"></a>
-<span class="sourceLineNo">057</span> @Override<a name="line.57"></a>
-<span class="sourceLineNo">058</span> public boolean accept(Path p) {<a name="line.58"></a>
-<span class="sourceLineNo">059</span> return AbstractFSWALProvider.isMetaFile(p);<a name="line.59"></a>
-<span class="sourceLineNo">060</span> }<a name="line.60"></a>
-<span class="sourceLineNo">061</span> };<a name="line.61"></a>
-<span class="sourceLineNo">062</span><a name="line.62"></a>
-<span class="sourceLineNo">063</span> @VisibleForTesting<a name="line.63"></a>
-<span class="sourceLineNo">064</span> public final static PathFilter NON_META_FILTER = new PathFilter() {<a name="line.64"></a>
-<span class="sourceLineNo">065</span> @Override<a name="line.65"></a>
-<span class="sourceLineNo">066</span> public boolean accept(Path p) {<a name="line.66"></a>
-<span class="sourceLineNo">067</span> return !AbstractFSWALProvider.isMetaFile(p);<a name="line.67"></a>
-<span class="sourceLineNo">068</span> }<a name="line.68"></a>
-<span class="sourceLineNo">069</span> };<a name="line.69"></a>
-<span class="sourceLineNo">070</span><a name="line.70"></a>
-<span class="sourceLineNo">071</span> // metrics for master<a name="line.71"></a>
-<span class="sourceLineNo">072</span> // TODO: Rename it, since those metrics are split-manager related<a name="line.72"></a>
-<span class="sourceLineNo">073</span> private final MetricsMasterFileSystem metricsMasterFilesystem = new MetricsMasterFileSystem();<a name="line.73"></a>
-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> // Keep around for convenience.<a name="line.75"></a>
-<span class="sourceLineNo">076</span> private final MasterServices services;<a name="line.76"></a>
-<span class="sourceLineNo">077</span> private final Configuration conf;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> private final FileSystem fs;<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span> // The Path to the old logs dir<a name="line.80"></a>
-<span class="sourceLineNo">081</span> private final Path oldLogDir;<a name="line.81"></a>
-<span class="sourceLineNo">082</span> private final Path rootDir;<a name="line.82"></a>
-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span> // create the split log lock<a name="line.84"></a>
-<span class="sourceLineNo">085</span> private final Lock splitLogLock = new ReentrantLock();<a name="line.85"></a>
-<span class="sourceLineNo">086</span> private final SplitLogManager splitLogManager;<a name="line.86"></a>
-<span class="sourceLineNo">087</span><a name="line.87"></a>
-<span class="sourceLineNo">088</span> // Is the fileystem ok?<a name="line.88"></a>
-<span class="sourceLineNo">089</span> private volatile boolean fsOk = true;<a name="line.89"></a>
-<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span> public MasterWalManager(MasterServices services) throws IOException {<a name="line.91"></a>
-<span class="sourceLineNo">092</span> this(services.getConfiguration(), services.getMasterFileSystem().getWALFileSystem(),<a name="line.92"></a>
-<span class="sourceLineNo">093</span> services.getMasterFileSystem().getWALRootDir(), services);<a name="line.93"></a>
-<span class="sourceLineNo">094</span> }<a name="line.94"></a>
-<span class="sourceLineNo">095</span><a name="line.95"></a>
-<span class="sourceLineNo">096</span> public MasterWalManager(Configuration conf, FileSystem fs, Path rootDir, MasterServices services)<a name="line.96"></a>
-<span class="sourceLineNo">097</span> throws IOException {<a name="line.97"></a>
-<span class="sourceLineNo">098</span> this.fs = fs;<a name="line.98"></a>
-<span class="sourceLineNo">099</span> this.conf = conf;<a name="line.99"></a>
-<span class="sourceLineNo">100</span> this.rootDir = rootDir;<a name="line.100"></a>
-<span class="sourceLineNo">101</span> this.services = services;<a name="line.101"></a>
-<span class="sourceLineNo">102</span> this.splitLogManager = new SplitLogManager(services, conf);<a name="line.102"></a>
-<span class="sourceLineNo">103</span><a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.oldLogDir = new Path(rootDir, HConstants.HREGION_OLDLOGDIR_NAME);<a name="line.104"></a>
-<span class="sourceLineNo">105</span> }<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span> public void stop() {<a name="line.107"></a>
-<span class="sourceLineNo">108</span> if (splitLogManager != null) {<a name="line.108"></a>
-<span class="sourceLineNo">109</span> splitLogManager.stop();<a name="line.109"></a>
-<span class="sourceLineNo">110</span> }<a name="line.110"></a>
-<span class="sourceLineNo">111</span> }<a name="line.111"></a>
-<span class="sourceLineNo">112</span><a name="line.112"></a>
-<span class="sourceLineNo">113</span> @VisibleForTesting<a name="line.113"></a>
-<span class="sourceLineNo">114</span> SplitLogManager getSplitLogManager() {<a name="line.114"></a>
-<span class="sourceLineNo">115</span> return this.splitLogManager;<a name="line.115"></a>
-<span class="sourceLineNo">116</span> }<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> /**<a name="line.118"></a>
-<span class="sourceLineNo">119</span> * Get the directory where old logs go<a name="line.119"></a>
-<span class="sourceLineNo">120</span> * @return the dir<a name="line.120"></a>
-<span class="sourceLineNo">121</span> */<a name="line.121"></a>
-<span class="sourceLineNo">122</span> Path getOldLogDir() {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> return this.oldLogDir;<a name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> public FileSystem getFileSystem() {<a name="line.126"></a>
-<span class="sourceLineNo">127</span> return this.fs;<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> /**<a name="line.130"></a>
-<span class="sourceLineNo">131</span> * Checks to see if the file system is still accessible.<a name="line.131"></a>
-<span class="sourceLineNo">132</span> * If not, sets closed<a name="line.132"></a>
-<span class="sourceLineNo">133</span> * @return false if file system is not available<a name="line.133"></a>
-<span class="sourceLineNo">134</span> */<a name="line.134"></a>
-<span class="sourceLineNo">135</span> private boolean checkFileSystem() {<a name="line.135"></a>
-<span class="sourceLineNo">136</span> if (this.fsOk) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span> try {<a name="line.137"></a>
-<span class="sourceLineNo">138</span> FSUtils.checkFileSystemAvailable(this.fs);<a name="line.138"></a>
-<span class="sourceLineNo">139</span> FSUtils.checkDfsSafeMode(this.conf);<a name="line.139"></a>
-<span class="sourceLineNo">140</span> } catch (IOException e) {<a name="line.140"></a>
-<span class="sourceLineNo">141</span> services.abort("Shutting down HBase cluster: file system not available", e);<a name="line.141"></a>
-<span class="sourceLineNo">142</span> this.fsOk = false;<a name="line.142"></a>
-<span class="sourceLineNo">143</span> }<a name="line.143"></a>
-<span class="sourceLineNo">144</span> }<a name="line.144"></a>
-<span class="sourceLineNo">145</span> return this.fsOk;<a name="line.145"></a>
-<span class="sourceLineNo">146</span> }<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> * Get Servernames which are currently splitting; paths have a '-splitting' suffix.<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * @return ServerName<a name="line.150"></a>
-<span class="sourceLineNo">151</span> * @throws IOException IOException<a name="line.151"></a>
-<span class="sourceLineNo">152</span> */<a name="line.152"></a>
-<span class="sourceLineNo">153</span> public Set<ServerName> getSplittingServersFromWALDir() throws IOException {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> return getServerNamesFromWALDirPath(<a name="line.154"></a>
-<span class="sourceLineNo">155</span> p -> p.getName().endsWith(AbstractFSWALProvider.SPLITTING_EXT));<a name="line.155"></a>
-<span class="sourceLineNo">156</span> }<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> /**<a name="line.158"></a>
-<span class="sourceLineNo">159</span> * Get Servernames that COULD BE 'alive'; excludes those that have a '-splitting' suffix as these<a name="line.159"></a>
-<span class="sourceLineNo">160</span> * are already being split -- they cannot be 'alive'.<a name="line.160"></a>
-<span class="sourceLineNo">161</span> * @return ServerName<a name="line.161"></a>
-<span class="sourceLineNo">162</span> * @throws IOException IOException<a name="line.162"></a>
-<span class="sourceLineNo">163</span> */<a name="line.163"></a>
-<span class="sourceLineNo">164</span> public Set<ServerName> getLiveServersFromWALDir() throws IOException {<a name="line.164"></a>
-<span class="sourceLineNo">165</span> return getServerNamesFromWALDirPath(<a name="line.165"></a>
-<span class="sourceLineNo">166</span> p -> !p.getName().endsWith(AbstractFSWALProvider.SPLITTING_EXT));<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> * @return listing of ServerNames found by parsing WAL directory paths in FS.<a name="line.170"></a>
-<span class="sourceLineNo">171</span> */<a name="line.171"></a>
-<span class="sourceLineNo">172</span> public Set<ServerName> getServerNamesFromWALDirPath(final PathFilter filter) throws IOException {<a name="line.172"></a>
-<span class="sourceLineNo">173</span> FileStatus[] walDirForServerNames = getWALDirPaths(filter);<a name="line.173"></a>
-<span class="sourceLineNo">174</span> return Stream.of(walDirForServerNames).map(s -> {<a name="line.174"></a>
-<span class="sourceLineNo">175</span> ServerName serverName = AbstractFSWALProvider.getServerNameFromWALDirectoryName(s.getPath());<a name="line.175"></a>
-<span class="sourceLineNo">176</span> if (serverName == null) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> LOG.warn("Log folder {} doesn't look like its name includes a " +<a name="line.177"></a>
-<span class="sourceLineNo">178</span> "region server name; leaving in place. If you see later errors about missing " +<a name="line.178"></a>
-<span class="sourceLineNo">179</span> "write ahead logs they may be saved in this location.", s.getPath());<a name="line.179"></a>
-<span class="sourceLineNo">180</span> return null;<a name="line.180"></a>
-<span class="sourceLineNo">181</span> }<a name="line.181"></a>
-<span class="sourceLineNo">182</span> return serverName;<a name="line.182"></a>
-<span class="sourceLineNo">183</span> }).filter(s -> s != null).collect(Collectors.toSet());<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> * @return List of all RegionServer WAL dirs; i.e. this.rootDir/HConstants.HREGION_LOGDIR_NAME.<a name="line.187"></a>
-<span class="sourceLineNo">188</span> */<a name="line.188"></a>
-<span class="sourceLineNo">189</span> public FileStatus[] getWALDirPaths(final PathFilter filter) throws IOException {<a name="line.189"></a>
-<span class="sourceLineNo">190</span> Path walDirPath = new Path(rootDir, HConstants.HREGION_LOGDIR_NAME);<a name="line.190"></a>
-<span class="sourceLineNo">191</span> FileStatus[] walDirForServerNames = FSUtils.listStatus(fs, walDirPath, filter);<a name="line.191"></a>
-<span class="sourceLineNo">192</span> return walDirForServerNames == null? new FileStatus[0]: walDirForServerNames;<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> /**<a name="line.195"></a>
-<span class="sourceLineNo">196</span> * Inspect the log directory to find dead servers which need recovery work<a name="line.196"></a>
-<span class="sourceLineNo">197</span> * @return A set of ServerNames which aren't running but still have WAL files left in file system<a name="line.197"></a>
-<span class="sourceLineNo">198</span> * @deprecated With proc-v2, we can record the crash server with procedure store, so do not need<a name="line.198"></a>
-<span class="sourceLineNo">199</span> * to scan the wal directory to find out the splitting wal directory any more. Leave<a name="line.199"></a>
-<span class="sourceLineNo">200</span> * it here only because {@code RecoverMetaProcedure}(which is also deprecated) uses<a name="line.200"></a>
-<span class="sourceLineNo">201</span> * it.<a name="line.201"></a>
-<span class="sourceLineNo">202</span> */<a name="line.202"></a>
-<span class="sourceLineNo">203</span> @Deprecated<a name="line.203"></a>
-<span class="sourceLineNo">204</span> public Set<ServerName> getFailedServersFromLogFolders() {<a name="line.204"></a>
-<span class="sourceLineNo">205</span> boolean retrySplitting = !conf.getBoolean("hbase.hlog.split.skip.errors",<a name="line.205"></a>
-<span class="sourceLineNo">206</span> WALSplitter.SPLIT_SKIP_ERRORS_DEFAULT);<a name="line.206"></a>
-<span class="sourceLineNo">207</span><a name="line.207"></a>
-<span class="sourceLineNo">208</span> Set<ServerName> serverNames = new HashSet<>();<a name="line.208"></a>
-<span class="sourceLineNo">209</span> Path logsDirPath = new Path(this.rootDir, HConstants.HREGION_LOGDIR_NAME);<a name="line.209"></a>
-<span class="sourceLineNo">210</span><a name="line.210"></a>
-<span class="sourceLineNo">211</span> do {<a name="line.211"></a>
-<span class="sourceLineNo">212</span> if (services.isStopped()) {<a name="line.212"></a>
-<span class="sourceLineNo">213</span> LOG.warn("Master stopped while trying to get failed servers.");<a name="line.213"></a>
-<span class="sourceLineNo">214</span> break;<a name="line.214"></a>
-<span class="sourceLineNo">215</span> }<a name="line.215"></a>
-<span class="sourceLineNo">216</span> try {<a name="line.216"></a>
-<span class="sourceLineNo">217</span> if (!this.fs.exists(logsDirPath)) return serverNames;<a name="line.217"></a>
-<span class="sourceLineNo">218</span> FileStatus[] logFolders = FSUtils.listStatus(this.fs, logsDirPath, null);<a name="line.218"></a>
-<span class="sourceLineNo">219</span> // Get online servers after getting log folders to avoid log folder deletion of newly<a name="line.219"></a>
-<span class="sourceLineNo">220</span> // checked in region servers . see HBASE-5916<a name="line.220"></a>
-<span class="sourceLineNo">221</span> Set<ServerName> onlineServers = services.getServerManager().getOnlineServers().keySet();<a name="line.221"></a>
-<span class="sourceLineNo">222</span><a name="line.222"></a>
-<span class="sourceLineNo">223</span> if (logFolders == null || logFolders.length == 0) {<a name="line.223"></a>
-<span class="sourceLineNo">224</span> LOG.debug("No log files to split, proceeding...");<a name="line.224"></a>
-<span class="sourceLineNo">225</span> return serverNames;<a name="line.225"></a>
-<span class="sourceLineNo">226</span> }<a name="line.226"></a>
-<span class="sourceLineNo">227</span> for (FileStatus status : logFolders) {<a name="line.227"></a>
-<span class="sourceLineNo">228</span> FileStatus[] curLogFiles = FSUtils.listStatus(this.fs, status.getPath(), null);<a name="line.228"></a>
-<span class="sourceLineNo">229</span> if (curLogFiles == null || curLogFiles.length == 0) {<a name="line.229"></a>
-<span class="sourceLineNo">230</span> // Empty log folder. No recovery needed<a name="line.230"></a>
-<span class="sourceLineNo">231</span> continue;<a name="line.231"></a>
-<span class="sourceLineNo">232</span> }<a name="line.232"></a>
-<span class="sourceLineNo">233</span> final ServerName serverName = AbstractFSWALProvider.getServerNameFromWALDirectoryName(<a name="line.233"></a>
-<span class="sourceLineNo">234</span> status.getPath());<a name="line.234"></a>
-<span class="sourceLineNo">235</span> if (null == serverName) {<a name="line.235"></a>
-<span class="sourceLineNo">236</span> LOG.warn("Log folder " + status.getPath() + " doesn't look like its name includes a " +<a name="line.236"></a>
-<span class="sourceLineNo">237</span> "region server name; leaving in place. If you see later errors about missing " +<a name="line.237"></a>
-<span class="sourceLineNo">238</span> "write ahead logs they may be saved in this location.");<a name="line.238"></a>
-<span class="sourceLineNo">239</span> } else if (!onlineServers.contains(serverName)) {<a name="line.239"></a>
-<span class="sourceLineNo">240</span> LOG.info("Log folder " + status.getPath() + " doesn't belong "<a name="line.240"></a>
-<span class="sourceLineNo">241</span> + "to a known region server, splitting");<a name="line.241"></a>
-<span class="sourceLineNo">242</span> serverNames.add(serverName);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> } else {<a name="line.243"></a>
-<span class="sourceLineNo">244</span> LOG.info("Log folder " + status.getPath() + " belongs to an existing region server");<a name="line.244"></a>
-<span class="sourceLineNo">245</span> }<a name="line.245"></a>
-<span class="sourceLineNo">246</span> }<a name="line.246"></a>
-<span class="sourceLineNo">247</span> retrySplitting = false;<a name="line.247"></a>
-<span class="sourceLineNo">248</span> } catch (IOException ioe) {<a name="line.248"></a>
-<span class="sourceLineNo">249</span> LOG.warn("Failed getting failed servers to be recovered.", ioe);<a name="line.249"></a>
-<span class="sourceLineNo">250</span> if (!checkFileSystem()) {<a name="line.250"></a>
-<span class="sourceLineNo">251</span> LOG.warn("Bad Filesystem, exiting");<a name="line.251"></a>
-<span class="sourceLineNo">252</span> Runtime.getRuntime().halt(1);<a name="line.252"></a>
-<span class="sourceLineNo">253</span> }<a name="line.253"></a>
-<span class="sourceLineNo">254</span> try {<a name="line.254"></a>
-<span class="sourceLineNo">255</span> if (retrySplitting) {<a name="line.255"></a>
-<span class="sourceLineNo">256</span> Thread.sleep(conf.getInt("hbase.hlog.split.failure.retry.interval", 30 * 1000));<a name="line.256"></a>
-<span class="sourceLineNo">257</span> }<a name="line.257"></a>
-<span class="sourceLineNo">258</span> } catch (InterruptedException e) {<a name="line.258"></a>
-<span class="sourceLineNo">259</span> LOG.warn("Interrupted, aborting since cannot return w/o splitting");<a name="line.259"></a>
-<span class="sourceLineNo">260</span> Thread.currentThread().interrupt();<a name="line.260"></a>
-<span class="sourceLineNo">261</span> retrySplitting = false;<a name="line.261"></a>
-<span class="sourceLineNo">262</span> Runtime.getRuntime().halt(1);<a name="line.262"></a>
-<span class="sourceLineNo">263</span> }<a name="line.263"></a>
-<span class="sourceLineNo">264</span> }<a name="line.264"></a>
-<span class="sourceLineNo">265</span> } while (retrySplitting);<a name="line.265"></a>
-<span class="sourceLineNo">266</span><a name="line.266"></a>
-<span class="sourceLineNo">267</span> return serverNames;<a name="line.267"></a>
-<span class="sourceLineNo">268</span> }<a name="line.268"></a>
-<span class="sourceLineNo">269</span><a name="line.269"></a>
-<span class="sourceLineNo">270</span> public void splitLog(final ServerName serverName) throws IOException {<a name="line.270"></a>
-<span class="sourceLineNo">271</span> splitLog(Collections.<ServerName>singleton(serverName));<a name="line.271"></a>
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-<span class="sourceLineNo">291</span> "We only release this lock when we set it. Updates to code that uses it should verify use " +<a name="line.291"></a>
-<span class="sourceLineNo">292</span> "of the guard boolean.")<a name="line.292"></a>
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-<span class="sourceLineNo">294</span> List<Path> logDirs = new ArrayList<>();<a name="line.294"></a>
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-<span class="sourceLineNo">297</span> // during master initialization, we could have multiple places splitting a same wal<a name="line.297"></a>
-<span class="sourceLineNo">298</span> // XXX: Does this still exist after we move to proc-v2?<a name="line.298"></a>
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-<span class="sourceLineNo">300</span> needReleaseLock = true;<a name="line.300"></a>
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-<span class="sourceLineNo">303</span> for (ServerName serverName : serverNames) {<a name="line.303"></a>
-<span class="sourceLineNo">304</span> Path logDir = new Path(this.rootDir,<a name="line.304"></a>
-<span class="sourceLineNo">305</span> AbstractFSWALProvider.getWALDirectoryName(serverName.toString()));<a name="line.305"></a>
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-<span class="sourceLineNo">312</span> logDir = splitDir;<a name="line.312"></a>
-<span class="sourceLineNo">313</span> LOG.debug("Renamed region directory: " + splitDir);<a name="line.313"></a>
-<span class="sourceLineNo">314</span> } else if (!fs.exists(splitDir)) {<a name="line.314"></a>
-<span class="sourceLineNo">315</span> LOG.info("Log dir for server " + serverName + " does not exist");<a name="line.315"></a>
-<span class="sourceLineNo">316</span> continue;<a name="line.316"></a>
-<span class="sourceLineNo">317</span> }<a name="line.317"></a>
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-<span class="sourceLineNo">323</span> throw ioe;<a name="line.323"></a>
-<span class="sourceLineNo">324</span> }<a name="line.324"></a>
-<span class="sourceLineNo">325</span> } finally {<a name="line.325"></a>
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-<span class="sourceLineNo">327</span> this.splitLogLock.unlock();<a name="line.327"></a>
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-<span class="sourceLineNo">344</span> long splitTime = 0, splitLogSize = 0;<a name="line.344"></a>
-<span class="sourceLineNo">345</span> List<Path> logDirs = getLogDirs(serverNames);<a name="line.345"></a>
-<span class="sourceLineNo">346</span><a name="line.346"></a>
-<span class="sourceLineNo">347</span> splitLogManager.handleDeadWorkers(serverNames);<a name="line.347"></a>
-<span class="sourceLineNo">348</span> splitTime = EnvironmentEdgeManager.currentTime();<a name="line.348"></a>
-<span class="sourceLineNo">349</span> splitLogSize = splitLogManager.splitLogDistributed(serverNames, logDirs, filter);<a name="line.349"></a>
-<span class="sourceLineNo">350</span> splitTime = EnvironmentEdgeManager.currentTime() - splitTime;<a name="line.350"></a>
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-<span class="sourceLineNo">358</span> }<a name="line.358"></a>
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-<span class="sourceLineNo">364</span> * The SCP won't split those meta wals, just leaving them there. So deleting<a name="line.364"></a>
-<span class="sourceLineNo">365</span> * the wal dir will fail since the dir is not empty. Actually We can safely achive those<a name="line.365"></a>
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-<span class="sourceLineNo">371</span> Path logDir = new Path(this.rootDir,<a name="line.371"></a>
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-<span class="sourceLineNo">380</span> status.getPath());<a name="line.380"></a>
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-<span class="sourceLineNo">382</span> LOG.warn("Unable to move " + status.getPath() + " to " + newPath);<a name="line.382"></a>
-<span class="sourceLineNo">383</span> } else {<a name="line.383"></a>
-<span class="sourceLineNo">384</span> LOG.debug("Archived meta log " + status.getPath() + " to " + newPath);<a name="line.384"></a>
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-<span class="sourceLineNo">386</span> }<a name="line.386"></a>
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-<span class="sourceLineNo">391</span> }<a name="line.391"></a>
-<span class="sourceLineNo">392</span> }<a name="line.392"></a>
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-<span class="sourceLineNo">394</span> LOG.warn("Failed archiving meta log for server " + serverName, ie);<a name="line.394"></a>
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-<span class="sourceLineNo">398</span><a name="line.398"></a>
-<span class="sourceLineNo">399</span>}<a name="line.399"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.CommonFSUtils;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.wal.WALSplitter;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.slf4j.Logger;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.slf4j.LoggerFactory;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.47"></a>
+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span>/**<a name="line.49"></a>
+<span class="sourceLineNo">050</span> * This class abstracts a bunch of operations the HMaster needs<a name="line.50"></a>
+<span class="sourceLineNo">051</span> * when splitting log files e.g. finding log files, dirs etc.<a name="line.51"></a>
+<span class="sourceLineNo">052</span> */<a name="line.52"></a>
+<span class="sourceLineNo">053</span>@InterfaceAudience.Private<a name="line.53"></a>
+<span class="sourceLineNo">054</span>public class MasterWalManager {<a name="line.54"></a>
+<span class="sourceLineNo">055</span> private static final Logger LOG = LoggerFactory.getLogger(MasterWalManager.class);<a name="line.55"></a>
+<span class="sourceLineNo">056</span><a name="line.56"></a>
+<span class="sourceLineNo">057</span> final static PathFilter META_FILTER = new PathFilter() {<a name="line.57"></a>
+<span class="sourceLineNo">058</span> @Override<a name="line.58"></a>
+<span class="sourceLineNo">059</span> public boolean accept(Path p) {<a name="line.59"></a>
+<span class="sourceLineNo">060</span> return AbstractFSWALProvider.isMetaFile(p);<a name="line.60"></a>
+<span class="sourceLineNo">061</span> }<a name="line.61"></a>
+<span class="sourceLineNo">062</span> };<a name="line.62"></a>
+<span class="sourceLineNo">063</span><a name="line.63"></a>
+<span class="sourceLineNo">064</span> @VisibleForTesting<a name="line.64"></a>
+<span class="sourceLineNo">065</span> public final static PathFilter NON_META_FILTER = new PathFilter() {<a name="line.65"></a>
+<span class="sourceLineNo">066</span> @Override<a name="line.66"></a>
+<span class="sourceLineNo">067</span> public boolean accept(Path p) {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> return !AbstractFSWALProvider.isMetaFile(p);<a name="line.68"></a>
+<span class="sourceLineNo">069</span> }<a name="line.69"></a>
+<span class="sourceLineNo">070</span> };<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span> // metrics for master<a name="line.72"></a>
+<span class="sourceLineNo">073</span> // TODO: Rename it, since those metrics are split-manager related<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private final MetricsMasterFileSystem metricsMasterFilesystem = new MetricsMasterFileSystem();<a name="line.74"></a>
+<span class="sourceLineNo">075</span><a name="line.75"></a>
+<span class="sourceLineNo">076</span> // Keep around for convenience.<a name="line.76"></a>
+<span class="sourceLineNo">077</span> private final MasterServices services;<a name="line.77"></a>
+<span class="sourceLineNo">078</span> private final Configuration conf;<a name="line.78"></a>
+<span class="sourceLineNo">079</span> private final FileSystem fs;<a name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
+<span class="sourceLineNo">081</span> // The Path to the old logs dir<a name="line.81"></a>
+<span class="sourceLineNo">082</span> private final Path oldLogDir;<a name="line.82"></a>
+<span class="sourceLineNo">083</span> private final Path rootDir;<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span> // create the split log lock<a name="line.85"></a>
+<span class="sourceLineNo">086</span> private final Lock splitLogLock = new ReentrantLock();<a name="line.86"></a>
+<span class="sourceLineNo">087</span> private final SplitLogManager splitLogManager;<a name="line.87"></a>
+<span class="sourceLineNo">088</span><a name="line.88"></a>
+<span class="sourceLineNo">089</span> // Is the fileystem ok?<a name="line.89"></a>
+<span class="sourceLineNo">090</span> private volatile boolean fsOk = true;<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> public MasterWalManager(MasterServices services) throws IOException {<a name="line.92"></a>
+<span class="sourceLineNo">093</span> this(services.getConfiguration(), services.getMasterFileSystem().getWALFileSystem(),<a name="line.93"></a>
+<span class="sourceLineNo">094</span> services.getMasterFileSystem().getWALRootDir(), services);<a name="line.94"></a>
+<span class="sourceLineNo">095</span> }<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> public MasterWalManager(Configuration conf, FileSystem fs, Path rootDir, MasterServices services)<a name="line.97"></a>
+<span class="sourceLineNo">098</span> throws IOException {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> this.fs = fs;<a name="line.99"></a>
+<span class="sourceLineNo">100</span> this.conf = conf;<a name="line.100"></a>
+<span class="sourceLineNo">101</span> this.rootDir = rootDir;<a name="line.101"></a>
+<span class="sourceLineNo">102</span> this.services = services;<a name="line.102"></a>
+<span class="sourceLineNo">103</span> this.splitLogManager = new SplitLogManager(services, conf);<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span> this.oldLogDir = new Path(rootDir, HConstants.HREGION_OLDLOGDIR_NAME);<a name="line.105"></a>
+<span class="sourceLineNo">106</span> }<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span> public void stop() {<a name="line.108"></a>
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+<span class="sourceLineNo">110</span> splitLogManager.stop();<a name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span> }<a name="line.112"></a>
+<span class="sourceLineNo">113</span><a name="line.113"></a>
+<span class="sourceLineNo">114</span> @VisibleForTesting<a name="line.114"></a>
+<span class="sourceLineNo">115</span> SplitLogManager getSplitLogManager() {<a name="line.115"></a>
+<span class="sourceLineNo">116</span> return this.splitLogManager;<a name="line.116"></a>
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+<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> * Get the directory where old logs go<a name="line.120"></a>
+<span class="sourceLineNo">121</span> * @return the dir<a name="line.121"></a>
+<span class="sourceLineNo">122</span> */<a name="line.122"></a>
+<span class="sourceLineNo">123</span> Path getOldLogDir() {<a name="line.123"></a>
+<span class="sourceLineNo">124</span> return this.oldLogDir;<a name="line.124"></a>
+<span class="sourceLineNo">125</span> }<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span> public FileSystem getFileSystem() {<a name="line.127"></a>
+<span class="sourceLineNo">128</span> return this.fs;<a name="line.128"></a>
+<span class="sourceLineNo">129</span> }<a name="line.129"></a>
+<span class="sourceLineNo">130</span><a name="line.130"></a>
+<span class="sourceLineNo">131</span> /**<a name="line.131"></a>
+<span class="sourceLineNo">132</span> * Checks to see if the file system is still accessible.<a name="line.132"></a>
+<span class="sourceLineNo">133</span> * If not, sets closed<a name="line.133"></a>
+<span class="sourceLineNo">134</span> * @return false if file system is not available<a name="line.134"></a>
+<span class="sourceLineNo">135</span> */<a name="line.135"></a>
+<span class="sourceLineNo">136</span> private boolean checkFileSystem() {<a name="line.136"></a>
+<span class="sourceLineNo">137</span> if (this.fsOk) {<a name="line.137"></a>
+<span class="sourceLineNo">138</span> try {<a name="line.138"></a>
+<span class="sourceLineNo">139</span> FSUtils.checkFileSystemAvailable(this.fs);<a name="line.139"></a>
+<span class="sourceLineNo">140</span> FSUtils.checkDfsSafeMode(this.conf);<a name="line.140"></a>
+<span class="sourceLineNo">141</span> } catch (IOException e) {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> services.abort("Shutting down HBase cluster: file system not available", e);<a name="line.142"></a>
+<span class="sourceLineNo">143</span> this.fsOk = false;<a name="line.143"></a>
+<span class="sourceLineNo">144</span> }<a name="line.144"></a>
+<span class="sourceLineNo">145</span> }<a name="line.145"></a>
+<span class="sourceLineNo">146</span> return this.fsOk;<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> /**<a name="line.149"></a>
+<span class="sourceLineNo">150</span> * Get Servernames which are currently splitting; paths have a '-splitting' suffix.<a name="line.150"></a>
+<span class="sourceLineNo">151</span> * @return ServerName<a name="line.151"></a>
+<span class="sourceLineNo">152</span> * @throws IOException IOException<a name="line.152"></a>
+<span class="sourceLineNo">153</span> */<a name="line.153"></a>
+<span class="sourceLineNo">154</span> public Set<ServerName> getSplittingServersFromWALDir() throws IOException {<a name="line.154"></a>
+<span class="sourceLineNo">155</span> return getServerNamesFromWALDirPath(<a name="line.155"></a>
+<span class="sourceLineNo">156</span> p -> p.getName().endsWith(AbstractFSWALProvider.SPLITTING_EXT));<a name="line.156"></a>
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+<span class="sourceLineNo">159</span> /**<a name="line.159"></a>
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+<span class="sourceLineNo">197</span> /**<a name="line.197"></a>
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