| /* |
| * |
| * * Licensed to the Apache Software Foundation (ASF) under one or more |
| * * contributor license agreements. See the NOTICE file distributed with |
| * * this work for additional information regarding copyright ownership. |
| * * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * * (the "License"); you may not use this file except in compliance with |
| * * the License. You may obtain a copy of the License at |
| * * |
| * * http://www.apache.org/licenses/LICENSE-2.0 |
| * * |
| * * Unless required by applicable law or agreed to in writing, software |
| * * distributed under the License is distributed on an "AS IS" BASIS, |
| * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * * See the License for the specific language governing permissions and |
| * * limitations under the License. |
| * |
| */ |
| |
| package org.apache.eagle.jpm.util; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| import java.io.IOException; |
| |
| public class HDFSUtil { |
| |
| public static FileSystem getFileSystem(Configuration conf) throws IOException { |
| HDFSUtil.login(conf); |
| return FileSystem.get(conf); |
| } |
| |
| public static void login(Configuration kConfig) throws IOException { |
| if (kConfig.get("hdfs.kerberos.principal") == null || kConfig.get("hdfs.kerberos.principal").isEmpty()) { |
| if (kConfig.get("hadoop.job.ugi") != null) { |
| System.setProperty("HADOOP_USER_NAME", kConfig.get("hadoop.job.ugi")); |
| } |
| return; |
| } |
| kConfig.setBoolean("hadoop.security.authorization", true); |
| kConfig.set("hadoop.security.authentication", "kerberos"); |
| UserGroupInformation.setConfiguration(kConfig); |
| UserGroupInformation.loginUserFromKeytab(kConfig.get("hdfs.kerberos.principal"), kConfig.get("hdfs.keytab.file")); |
| } |
| } |