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<FONT color="green">001</FONT>    /**<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<FONT color="green">003</FONT>     * or more contributor license agreements.  See the NOTICE file<a name="line.3"></a>
<FONT color="green">004</FONT>     * distributed with this work for additional information<a name="line.4"></a>
<FONT color="green">005</FONT>     * regarding copyright ownership.  The ASF licenses this file<a name="line.5"></a>
<FONT color="green">006</FONT>     * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<FONT color="green">007</FONT>     * "License"); you may not use this file except in compliance<a name="line.7"></a>
<FONT color="green">008</FONT>     * with the License.  You may obtain a copy of the License at<a name="line.8"></a>
<FONT color="green">009</FONT>     *<a name="line.9"></a>
<FONT color="green">010</FONT>     *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<FONT color="green">011</FONT>     *<a name="line.11"></a>
<FONT color="green">012</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<FONT color="green">013</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<FONT color="green">014</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<FONT color="green">015</FONT>     * See the License for the specific language governing permissions and<a name="line.15"></a>
<FONT color="green">016</FONT>     * limitations under the License.<a name="line.16"></a>
<FONT color="green">017</FONT>     */<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    package org.apache.hadoop.lib.service.hadoop;<a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>    import org.apache.hadoop.conf.Configuration;<a name="line.21"></a>
<FONT color="green">022</FONT>    import org.apache.hadoop.fs.FileSystem;<a name="line.22"></a>
<FONT color="green">023</FONT>    import org.apache.hadoop.lib.server.BaseService;<a name="line.23"></a>
<FONT color="green">024</FONT>    import org.apache.hadoop.lib.server.ServiceException;<a name="line.24"></a>
<FONT color="green">025</FONT>    import org.apache.hadoop.lib.service.FileSystemAccess;<a name="line.25"></a>
<FONT color="green">026</FONT>    import org.apache.hadoop.lib.service.FileSystemAccessException;<a name="line.26"></a>
<FONT color="green">027</FONT>    import org.apache.hadoop.lib.service.Instrumentation;<a name="line.27"></a>
<FONT color="green">028</FONT>    import org.apache.hadoop.lib.util.Check;<a name="line.28"></a>
<FONT color="green">029</FONT>    import org.apache.hadoop.lib.util.ConfigurationUtils;<a name="line.29"></a>
<FONT color="green">030</FONT>    import org.apache.hadoop.security.UserGroupInformation;<a name="line.30"></a>
<FONT color="green">031</FONT>    import org.apache.hadoop.util.VersionInfo;<a name="line.31"></a>
<FONT color="green">032</FONT>    import org.slf4j.Logger;<a name="line.32"></a>
<FONT color="green">033</FONT>    import org.slf4j.LoggerFactory;<a name="line.33"></a>
<FONT color="green">034</FONT>    <a name="line.34"></a>
<FONT color="green">035</FONT>    import java.io.IOException;<a name="line.35"></a>
<FONT color="green">036</FONT>    import java.net.URI;<a name="line.36"></a>
<FONT color="green">037</FONT>    import java.security.PrivilegedExceptionAction;<a name="line.37"></a>
<FONT color="green">038</FONT>    import java.util.Collection;<a name="line.38"></a>
<FONT color="green">039</FONT>    import java.util.HashSet;<a name="line.39"></a>
<FONT color="green">040</FONT>    import java.util.Map;<a name="line.40"></a>
<FONT color="green">041</FONT>    import java.util.Set;<a name="line.41"></a>
<FONT color="green">042</FONT>    import java.util.concurrent.atomic.AtomicInteger;<a name="line.42"></a>
<FONT color="green">043</FONT>    <a name="line.43"></a>
<FONT color="green">044</FONT>    public class FileSystemAccessService extends BaseService implements FileSystemAccess {<a name="line.44"></a>
<FONT color="green">045</FONT>      private static final Logger LOG = LoggerFactory.getLogger(FileSystemAccessService.class);<a name="line.45"></a>
<FONT color="green">046</FONT>    <a name="line.46"></a>
<FONT color="green">047</FONT>      public static final String PREFIX = "hadoop";<a name="line.47"></a>
<FONT color="green">048</FONT>    <a name="line.48"></a>
<FONT color="green">049</FONT>      private static final String INSTRUMENTATION_GROUP = "hadoop";<a name="line.49"></a>
<FONT color="green">050</FONT>    <a name="line.50"></a>
<FONT color="green">051</FONT>      public static final String AUTHENTICATION_TYPE = "authentication.type";<a name="line.51"></a>
<FONT color="green">052</FONT>      public static final String KERBEROS_KEYTAB = "authentication.kerberos.keytab";<a name="line.52"></a>
<FONT color="green">053</FONT>      public static final String KERBEROS_PRINCIPAL = "authentication.kerberos.principal";<a name="line.53"></a>
<FONT color="green">054</FONT>    <a name="line.54"></a>
<FONT color="green">055</FONT>      public static final String NAME_NODE_WHITELIST = "name.node.whitelist";<a name="line.55"></a>
<FONT color="green">056</FONT>    <a name="line.56"></a>
<FONT color="green">057</FONT>      private static final String HADOOP_CONF_PREFIX = "conf:";<a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>      private static final String NAME_NODE_PROPERTY = "fs.default.name";<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>      public FileSystemAccessService() {<a name="line.61"></a>
<FONT color="green">062</FONT>        super(PREFIX);<a name="line.62"></a>
<FONT color="green">063</FONT>      }<a name="line.63"></a>
<FONT color="green">064</FONT>    <a name="line.64"></a>
<FONT color="green">065</FONT>      private Collection&lt;String&gt; nameNodeWhitelist;<a name="line.65"></a>
<FONT color="green">066</FONT>    <a name="line.66"></a>
<FONT color="green">067</FONT>      Configuration serviceHadoopConf;<a name="line.67"></a>
<FONT color="green">068</FONT>    <a name="line.68"></a>
<FONT color="green">069</FONT>      private AtomicInteger unmanagedFileSystems = new AtomicInteger();<a name="line.69"></a>
<FONT color="green">070</FONT>    <a name="line.70"></a>
<FONT color="green">071</FONT>      @Override<a name="line.71"></a>
<FONT color="green">072</FONT>      protected void init() throws ServiceException {<a name="line.72"></a>
<FONT color="green">073</FONT>        LOG.info("Using FileSystemAccess JARs version [{}]", VersionInfo.getVersion());<a name="line.73"></a>
<FONT color="green">074</FONT>        String security = getServiceConfig().get(AUTHENTICATION_TYPE, "simple").trim();<a name="line.74"></a>
<FONT color="green">075</FONT>        if (security.equals("kerberos")) {<a name="line.75"></a>
<FONT color="green">076</FONT>          String defaultName = getServer().getName();<a name="line.76"></a>
<FONT color="green">077</FONT>          String keytab = System.getProperty("user.home") + "/" + defaultName + ".keytab";<a name="line.77"></a>
<FONT color="green">078</FONT>          keytab = getServiceConfig().get(KERBEROS_KEYTAB, keytab).trim();<a name="line.78"></a>
<FONT color="green">079</FONT>          if (keytab.length() == 0) {<a name="line.79"></a>
<FONT color="green">080</FONT>            throw new ServiceException(FileSystemAccessException.ERROR.H01, KERBEROS_KEYTAB);<a name="line.80"></a>
<FONT color="green">081</FONT>          }<a name="line.81"></a>
<FONT color="green">082</FONT>          String principal = defaultName + "/localhost@LOCALHOST";<a name="line.82"></a>
<FONT color="green">083</FONT>          principal = getServiceConfig().get(KERBEROS_PRINCIPAL, principal).trim();<a name="line.83"></a>
<FONT color="green">084</FONT>          if (principal.length() == 0) {<a name="line.84"></a>
<FONT color="green">085</FONT>            throw new ServiceException(FileSystemAccessException.ERROR.H01, KERBEROS_PRINCIPAL);<a name="line.85"></a>
<FONT color="green">086</FONT>          }<a name="line.86"></a>
<FONT color="green">087</FONT>          Configuration conf = new Configuration();<a name="line.87"></a>
<FONT color="green">088</FONT>          conf.set("hadoop.security.authentication", "kerberos");<a name="line.88"></a>
<FONT color="green">089</FONT>          UserGroupInformation.setConfiguration(conf);<a name="line.89"></a>
<FONT color="green">090</FONT>          try {<a name="line.90"></a>
<FONT color="green">091</FONT>            UserGroupInformation.loginUserFromKeytab(principal, keytab);<a name="line.91"></a>
<FONT color="green">092</FONT>          } catch (IOException ex) {<a name="line.92"></a>
<FONT color="green">093</FONT>            throw new ServiceException(FileSystemAccessException.ERROR.H02, ex.getMessage(), ex);<a name="line.93"></a>
<FONT color="green">094</FONT>          }<a name="line.94"></a>
<FONT color="green">095</FONT>          LOG.info("Using FileSystemAccess Kerberos authentication, principal [{}] keytab [{}]", principal, keytab);<a name="line.95"></a>
<FONT color="green">096</FONT>        } else if (security.equals("simple")) {<a name="line.96"></a>
<FONT color="green">097</FONT>          Configuration conf = new Configuration();<a name="line.97"></a>
<FONT color="green">098</FONT>          conf.set("hadoop.security.authentication", "simple");<a name="line.98"></a>
<FONT color="green">099</FONT>          UserGroupInformation.setConfiguration(conf);<a name="line.99"></a>
<FONT color="green">100</FONT>          LOG.info("Using FileSystemAccess simple/pseudo authentication, principal [{}]", System.getProperty("user.name"));<a name="line.100"></a>
<FONT color="green">101</FONT>        } else {<a name="line.101"></a>
<FONT color="green">102</FONT>          throw new ServiceException(FileSystemAccessException.ERROR.H09, security);<a name="line.102"></a>
<FONT color="green">103</FONT>        }<a name="line.103"></a>
<FONT color="green">104</FONT>    <a name="line.104"></a>
<FONT color="green">105</FONT>        serviceHadoopConf = new Configuration(false);<a name="line.105"></a>
<FONT color="green">106</FONT>        for (Map.Entry entry : getServiceConfig()) {<a name="line.106"></a>
<FONT color="green">107</FONT>          String name = (String) entry.getKey();<a name="line.107"></a>
<FONT color="green">108</FONT>          if (name.startsWith(HADOOP_CONF_PREFIX)) {<a name="line.108"></a>
<FONT color="green">109</FONT>            name = name.substring(HADOOP_CONF_PREFIX.length());<a name="line.109"></a>
<FONT color="green">110</FONT>            String value = (String) entry.getValue();<a name="line.110"></a>
<FONT color="green">111</FONT>            serviceHadoopConf.set(name, value);<a name="line.111"></a>
<FONT color="green">112</FONT>    <a name="line.112"></a>
<FONT color="green">113</FONT>          }<a name="line.113"></a>
<FONT color="green">114</FONT>        }<a name="line.114"></a>
<FONT color="green">115</FONT>        setRequiredServiceHadoopConf(serviceHadoopConf);<a name="line.115"></a>
<FONT color="green">116</FONT>    <a name="line.116"></a>
<FONT color="green">117</FONT>        LOG.debug("FileSystemAccess default configuration:");<a name="line.117"></a>
<FONT color="green">118</FONT>        for (Map.Entry entry : serviceHadoopConf) {<a name="line.118"></a>
<FONT color="green">119</FONT>          LOG.debug("  {} = {}", entry.getKey(), entry.getValue());<a name="line.119"></a>
<FONT color="green">120</FONT>        }<a name="line.120"></a>
<FONT color="green">121</FONT>    <a name="line.121"></a>
<FONT color="green">122</FONT>        nameNodeWhitelist = toLowerCase(getServiceConfig().getTrimmedStringCollection(NAME_NODE_WHITELIST));<a name="line.122"></a>
<FONT color="green">123</FONT>      }<a name="line.123"></a>
<FONT color="green">124</FONT>    <a name="line.124"></a>
<FONT color="green">125</FONT>      @Override<a name="line.125"></a>
<FONT color="green">126</FONT>      public void postInit() throws ServiceException {<a name="line.126"></a>
<FONT color="green">127</FONT>        super.postInit();<a name="line.127"></a>
<FONT color="green">128</FONT>        Instrumentation instrumentation = getServer().get(Instrumentation.class);<a name="line.128"></a>
<FONT color="green">129</FONT>        instrumentation.addVariable(INSTRUMENTATION_GROUP, "unmanaged.fs", new Instrumentation.Variable&lt;Integer&gt;() {<a name="line.129"></a>
<FONT color="green">130</FONT>          @Override<a name="line.130"></a>
<FONT color="green">131</FONT>          public Integer getValue() {<a name="line.131"></a>
<FONT color="green">132</FONT>            return unmanagedFileSystems.get();<a name="line.132"></a>
<FONT color="green">133</FONT>          }<a name="line.133"></a>
<FONT color="green">134</FONT>        });<a name="line.134"></a>
<FONT color="green">135</FONT>        instrumentation.addSampler(INSTRUMENTATION_GROUP, "unmanaged.fs", 60, new Instrumentation.Variable&lt;Long&gt;() {<a name="line.135"></a>
<FONT color="green">136</FONT>          @Override<a name="line.136"></a>
<FONT color="green">137</FONT>          public Long getValue() {<a name="line.137"></a>
<FONT color="green">138</FONT>            return (long) unmanagedFileSystems.get();<a name="line.138"></a>
<FONT color="green">139</FONT>          }<a name="line.139"></a>
<FONT color="green">140</FONT>        });<a name="line.140"></a>
<FONT color="green">141</FONT>      }<a name="line.141"></a>
<FONT color="green">142</FONT>    <a name="line.142"></a>
<FONT color="green">143</FONT>      private Set&lt;String&gt; toLowerCase(Collection&lt;String&gt; collection) {<a name="line.143"></a>
<FONT color="green">144</FONT>        Set&lt;String&gt; set = new HashSet&lt;String&gt;();<a name="line.144"></a>
<FONT color="green">145</FONT>        for (String value : collection) {<a name="line.145"></a>
<FONT color="green">146</FONT>          set.add(value.toLowerCase());<a name="line.146"></a>
<FONT color="green">147</FONT>        }<a name="line.147"></a>
<FONT color="green">148</FONT>        return set;<a name="line.148"></a>
<FONT color="green">149</FONT>      }<a name="line.149"></a>
<FONT color="green">150</FONT>    <a name="line.150"></a>
<FONT color="green">151</FONT>      @Override<a name="line.151"></a>
<FONT color="green">152</FONT>      public Class getInterface() {<a name="line.152"></a>
<FONT color="green">153</FONT>        return FileSystemAccess.class;<a name="line.153"></a>
<FONT color="green">154</FONT>      }<a name="line.154"></a>
<FONT color="green">155</FONT>    <a name="line.155"></a>
<FONT color="green">156</FONT>      @Override<a name="line.156"></a>
<FONT color="green">157</FONT>      public Class[] getServiceDependencies() {<a name="line.157"></a>
<FONT color="green">158</FONT>        return new Class[]{Instrumentation.class};<a name="line.158"></a>
<FONT color="green">159</FONT>      }<a name="line.159"></a>
<FONT color="green">160</FONT>    <a name="line.160"></a>
<FONT color="green">161</FONT>      protected UserGroupInformation getUGI(String user) throws IOException {<a name="line.161"></a>
<FONT color="green">162</FONT>        return UserGroupInformation.createProxyUser(user, UserGroupInformation.getLoginUser());<a name="line.162"></a>
<FONT color="green">163</FONT>      }<a name="line.163"></a>
<FONT color="green">164</FONT>    <a name="line.164"></a>
<FONT color="green">165</FONT>      protected void setRequiredServiceHadoopConf(Configuration conf) {<a name="line.165"></a>
<FONT color="green">166</FONT>        conf.set("fs.hdfs.impl.disable.cache", "true");<a name="line.166"></a>
<FONT color="green">167</FONT>      }<a name="line.167"></a>
<FONT color="green">168</FONT>    <a name="line.168"></a>
<FONT color="green">169</FONT>      protected Configuration createHadoopConf(Configuration conf) {<a name="line.169"></a>
<FONT color="green">170</FONT>        Configuration hadoopConf = new Configuration();<a name="line.170"></a>
<FONT color="green">171</FONT>        ConfigurationUtils.copy(serviceHadoopConf, hadoopConf);<a name="line.171"></a>
<FONT color="green">172</FONT>        ConfigurationUtils.copy(conf, hadoopConf);<a name="line.172"></a>
<FONT color="green">173</FONT>        return hadoopConf;<a name="line.173"></a>
<FONT color="green">174</FONT>      }<a name="line.174"></a>
<FONT color="green">175</FONT>    <a name="line.175"></a>
<FONT color="green">176</FONT>      protected Configuration createNameNodeConf(Configuration conf) {<a name="line.176"></a>
<FONT color="green">177</FONT>        return createHadoopConf(conf);<a name="line.177"></a>
<FONT color="green">178</FONT>      }<a name="line.178"></a>
<FONT color="green">179</FONT>    <a name="line.179"></a>
<FONT color="green">180</FONT>      protected FileSystem createFileSystem(Configuration namenodeConf) throws IOException {<a name="line.180"></a>
<FONT color="green">181</FONT>        return FileSystem.get(namenodeConf);<a name="line.181"></a>
<FONT color="green">182</FONT>      }<a name="line.182"></a>
<FONT color="green">183</FONT>    <a name="line.183"></a>
<FONT color="green">184</FONT>      protected void closeFileSystem(FileSystem fs) throws IOException {<a name="line.184"></a>
<FONT color="green">185</FONT>        fs.close();<a name="line.185"></a>
<FONT color="green">186</FONT>      }<a name="line.186"></a>
<FONT color="green">187</FONT>    <a name="line.187"></a>
<FONT color="green">188</FONT>      protected void validateNamenode(String namenode) throws FileSystemAccessException {<a name="line.188"></a>
<FONT color="green">189</FONT>        if (nameNodeWhitelist.size() &gt; 0 &amp;&amp; !nameNodeWhitelist.contains("*")) {<a name="line.189"></a>
<FONT color="green">190</FONT>          if (!nameNodeWhitelist.contains(namenode.toLowerCase())) {<a name="line.190"></a>
<FONT color="green">191</FONT>            throw new FileSystemAccessException(FileSystemAccessException.ERROR.H05, namenode, "not in whitelist");<a name="line.191"></a>
<FONT color="green">192</FONT>          }<a name="line.192"></a>
<FONT color="green">193</FONT>        }<a name="line.193"></a>
<FONT color="green">194</FONT>      }<a name="line.194"></a>
<FONT color="green">195</FONT>    <a name="line.195"></a>
<FONT color="green">196</FONT>      protected void checkNameNodeHealth(FileSystem fileSystem) throws FileSystemAccessException {<a name="line.196"></a>
<FONT color="green">197</FONT>      }<a name="line.197"></a>
<FONT color="green">198</FONT>    <a name="line.198"></a>
<FONT color="green">199</FONT>      @Override<a name="line.199"></a>
<FONT color="green">200</FONT>      public &lt;T&gt; T execute(String user, final Configuration conf, final FileSystemExecutor&lt;T&gt; executor)<a name="line.200"></a>
<FONT color="green">201</FONT>        throws FileSystemAccessException {<a name="line.201"></a>
<FONT color="green">202</FONT>        Check.notEmpty(user, "user");<a name="line.202"></a>
<FONT color="green">203</FONT>        Check.notNull(conf, "conf");<a name="line.203"></a>
<FONT color="green">204</FONT>        Check.notNull(executor, "executor");<a name="line.204"></a>
<FONT color="green">205</FONT>        if (conf.get(NAME_NODE_PROPERTY) == null || conf.getTrimmed(NAME_NODE_PROPERTY).length() == 0) {<a name="line.205"></a>
<FONT color="green">206</FONT>          throw new FileSystemAccessException(FileSystemAccessException.ERROR.H06, NAME_NODE_PROPERTY);<a name="line.206"></a>
<FONT color="green">207</FONT>        }<a name="line.207"></a>
<FONT color="green">208</FONT>        try {<a name="line.208"></a>
<FONT color="green">209</FONT>          validateNamenode(new URI(conf.get(NAME_NODE_PROPERTY)).getAuthority());<a name="line.209"></a>
<FONT color="green">210</FONT>          UserGroupInformation ugi = getUGI(user);<a name="line.210"></a>
<FONT color="green">211</FONT>          return ugi.doAs(new PrivilegedExceptionAction&lt;T&gt;() {<a name="line.211"></a>
<FONT color="green">212</FONT>            public T run() throws Exception {<a name="line.212"></a>
<FONT color="green">213</FONT>              Configuration namenodeConf = createNameNodeConf(conf);<a name="line.213"></a>
<FONT color="green">214</FONT>              FileSystem fs = createFileSystem(namenodeConf);<a name="line.214"></a>
<FONT color="green">215</FONT>              Instrumentation instrumentation = getServer().get(Instrumentation.class);<a name="line.215"></a>
<FONT color="green">216</FONT>              Instrumentation.Cron cron = instrumentation.createCron();<a name="line.216"></a>
<FONT color="green">217</FONT>              try {<a name="line.217"></a>
<FONT color="green">218</FONT>                checkNameNodeHealth(fs);<a name="line.218"></a>
<FONT color="green">219</FONT>                cron.start();<a name="line.219"></a>
<FONT color="green">220</FONT>                return executor.execute(fs);<a name="line.220"></a>
<FONT color="green">221</FONT>              } finally {<a name="line.221"></a>
<FONT color="green">222</FONT>                cron.stop();<a name="line.222"></a>
<FONT color="green">223</FONT>                instrumentation.addCron(INSTRUMENTATION_GROUP, executor.getClass().getSimpleName(), cron);<a name="line.223"></a>
<FONT color="green">224</FONT>                closeFileSystem(fs);<a name="line.224"></a>
<FONT color="green">225</FONT>              }<a name="line.225"></a>
<FONT color="green">226</FONT>            }<a name="line.226"></a>
<FONT color="green">227</FONT>          });<a name="line.227"></a>
<FONT color="green">228</FONT>        } catch (FileSystemAccessException ex) {<a name="line.228"></a>
<FONT color="green">229</FONT>          throw ex;<a name="line.229"></a>
<FONT color="green">230</FONT>        } catch (Exception ex) {<a name="line.230"></a>
<FONT color="green">231</FONT>          throw new FileSystemAccessException(FileSystemAccessException.ERROR.H03, ex);<a name="line.231"></a>
<FONT color="green">232</FONT>        }<a name="line.232"></a>
<FONT color="green">233</FONT>      }<a name="line.233"></a>
<FONT color="green">234</FONT>    <a name="line.234"></a>
<FONT color="green">235</FONT>      public FileSystem createFileSystemInternal(String user, final Configuration conf)<a name="line.235"></a>
<FONT color="green">236</FONT>        throws IOException, FileSystemAccessException {<a name="line.236"></a>
<FONT color="green">237</FONT>        Check.notEmpty(user, "user");<a name="line.237"></a>
<FONT color="green">238</FONT>        Check.notNull(conf, "conf");<a name="line.238"></a>
<FONT color="green">239</FONT>        try {<a name="line.239"></a>
<FONT color="green">240</FONT>          validateNamenode(new URI(conf.get(NAME_NODE_PROPERTY)).getAuthority());<a name="line.240"></a>
<FONT color="green">241</FONT>          UserGroupInformation ugi = getUGI(user);<a name="line.241"></a>
<FONT color="green">242</FONT>          return ugi.doAs(new PrivilegedExceptionAction&lt;FileSystem&gt;() {<a name="line.242"></a>
<FONT color="green">243</FONT>            public FileSystem run() throws Exception {<a name="line.243"></a>
<FONT color="green">244</FONT>              Configuration namenodeConf = createNameNodeConf(conf);<a name="line.244"></a>
<FONT color="green">245</FONT>              return createFileSystem(namenodeConf);<a name="line.245"></a>
<FONT color="green">246</FONT>            }<a name="line.246"></a>
<FONT color="green">247</FONT>          });<a name="line.247"></a>
<FONT color="green">248</FONT>        } catch (IOException ex) {<a name="line.248"></a>
<FONT color="green">249</FONT>          throw ex;<a name="line.249"></a>
<FONT color="green">250</FONT>        } catch (FileSystemAccessException ex) {<a name="line.250"></a>
<FONT color="green">251</FONT>          throw ex;<a name="line.251"></a>
<FONT color="green">252</FONT>        } catch (Exception ex) {<a name="line.252"></a>
<FONT color="green">253</FONT>          throw new FileSystemAccessException(FileSystemAccessException.ERROR.H08, ex.getMessage(), ex);<a name="line.253"></a>
<FONT color="green">254</FONT>        }<a name="line.254"></a>
<FONT color="green">255</FONT>      }<a name="line.255"></a>
<FONT color="green">256</FONT>    <a name="line.256"></a>
<FONT color="green">257</FONT>      @Override<a name="line.257"></a>
<FONT color="green">258</FONT>      public FileSystem createFileSystem(String user, final Configuration conf) throws IOException,<a name="line.258"></a>
<FONT color="green">259</FONT>        FileSystemAccessException {<a name="line.259"></a>
<FONT color="green">260</FONT>        unmanagedFileSystems.incrementAndGet();<a name="line.260"></a>
<FONT color="green">261</FONT>        return createFileSystemInternal(user, conf);<a name="line.261"></a>
<FONT color="green">262</FONT>      }<a name="line.262"></a>
<FONT color="green">263</FONT>    <a name="line.263"></a>
<FONT color="green">264</FONT>      @Override<a name="line.264"></a>
<FONT color="green">265</FONT>      public void releaseFileSystem(FileSystem fs) throws IOException {<a name="line.265"></a>
<FONT color="green">266</FONT>        unmanagedFileSystems.decrementAndGet();<a name="line.266"></a>
<FONT color="green">267</FONT>        closeFileSystem(fs);<a name="line.267"></a>
<FONT color="green">268</FONT>      }<a name="line.268"></a>
<FONT color="green">269</FONT>    <a name="line.269"></a>
<FONT color="green">270</FONT>    <a name="line.270"></a>
<FONT color="green">271</FONT>      @Override<a name="line.271"></a>
<FONT color="green">272</FONT>      public Configuration getDefaultConfiguration() {<a name="line.272"></a>
<FONT color="green">273</FONT>        Configuration conf = new Configuration(false);<a name="line.273"></a>
<FONT color="green">274</FONT>        ConfigurationUtils.copy(serviceHadoopConf, conf);<a name="line.274"></a>
<FONT color="green">275</FONT>        return conf;<a name="line.275"></a>
<FONT color="green">276</FONT>      }<a name="line.276"></a>
<FONT color="green">277</FONT>    <a name="line.277"></a>
<FONT color="green">278</FONT>    }<a name="line.278"></a>




























































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