/**
* 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.hadoop.mapred;
import java.io.*;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.dfs.MiniDFSCluster;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.*;
/**
* A JUnit test to test Mini Map-Reduce Cluster with Mini-DFS.
*/
public class TestMiniMRWithDFSWithDistinctUsers extends TestCase {
static final long now = System.currentTimeMillis();
static final UnixUserGroupInformation DFS_UGI = createUGI("dfs", true);
static final UnixUserGroupInformation PI_UGI = createUGI("pi", false);
static final UnixUserGroupInformation WC_UGI = createUGI("wc", false);
static UnixUserGroupInformation createUGI(String name, boolean issuper) {
String username = name + now;
String group = issuper? "supergroup": username;
return UnixUserGroupInformation.createImmutable(
new String[]{username, group});
}
static JobConf createJobConf(MiniMRCluster mr, UnixUserGroupInformation ugi) {
JobConf jobconf = mr.createJobConf();
UnixUserGroupInformation.saveToConf(jobconf,
UnixUserGroupInformation.UGI_PROPERTY_NAME, ugi);
return jobconf;
}
static void mkdir(FileSystem fs, String dir) throws IOException {
Path p = new Path(dir);
fs.mkdirs(p);
fs.setPermission(p, new FsPermission((short)0777));
}
public void testDistinctUsers() throws Exception {
MiniDFSCluster dfs = null;
MiniMRCluster mr = null;
try {
Configuration conf = new Configuration();
UnixUserGroupInformation.saveToConf(conf,
UnixUserGroupInformation.UGI_PROPERTY_NAME, DFS_UGI);
dfs = new MiniDFSCluster(conf, 4, true, null);
FileSystem fs = dfs.getFileSystem();
mkdir(fs, "/user");
mkdir(fs, "/mapred");
UnixUserGroupInformation MR_UGI = createUGI(
UnixUserGroupInformation.login().getUserName(), false);
mr = new MiniMRCluster(0, 0, 4, dfs.getFileSystem().getUri().toString(),
false, 1, MR_UGI);
JobConf pi = createJobConf(mr, PI_UGI);
TestMiniMRWithDFS.runPI(mr, pi);
JobConf wc = createJobConf(mr, WC_UGI);
TestMiniMRWithDFS.runWordCount(mr, wc);
} finally {
if (dfs != null) { dfs.shutdown(); }
if (mr != null) { mr.shutdown();}
}
}
}