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Amend HDFS-2841 to include new file which was omitted from original commit. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-1623@1237971 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Aaron Myers 2012-01-30 20:32:35 +00:00
parent 846f97312c
commit 9a8f119741
1 changed files with 59 additions and 0 deletions
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59
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSHAAdmin.java Normal file
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@ -0,0 +1,59 @@
/**
* 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.hdfs.tools;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.ha.HAAdmin;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.util.ToolRunner;
/**
* Class to extend HAAdmin to do a little bit of HDFS-specific configuration.
*/
public class DFSHAAdmin extends HAAdmin {
private static final Log LOG =
LogFactory.getLog(DFSHAAdmin.class);
@Override
public void setConf(Configuration conf) {
if (conf != null) {
// Make a copy so we don't mutate it. Also use an HdfsConfiguration to
// force loading of hdfs-site.xml.
conf = new HdfsConfiguration(conf);
String nameNodePrincipal = conf.get(
DFSConfigKeys.DFS_NAMENODE_USER_NAME_KEY, "");
if (LOG.isDebugEnabled()) {
LOG.debug("Using NN principal: " + nameNodePrincipal);
}
conf.set(CommonConfigurationKeys.HADOOP_SECURITY_SERVICE_USER_NAME_KEY,
nameNodePrincipal);
}
super.setConf(conf);
}
public static void main(String[] argv) throws Exception {
int res = ToolRunner.run(new DFSHAAdmin(), argv);
System.exit(res);
}
}