protected FileSystem getNewDFS() {
final FileSystem[] returned = new FileSystem[1];
IHDFSFileSystem access = null;
final String host = RemoteUtilities.getHost();
final int port = RemoteUtilities.getPort();
// RemoteUtilities.getPassword()
final String user = RemoteUtilities.getUser();
String connStr = host + ":" + port + ":" + user + ":" + RemoteUtilities.getPassword();
final String userDir = "/user/" + user;
// final String userDir = "/user" ;
try {
UserGroupInformation ugi = getCurrentUserGroup();
// if(true) throw new UnsupportedOperationException("Uncomment when using version
// 1.0.*");
ugi.doAs(
new PrivilegedExceptionAction<Void>() {
public Void run() throws Exception {
Configuration conf = new Configuration();
conf.set("fs.default.name", "hdfs://" + host + ":" + port);
conf.set("fs.defaultFS", "hdfs://" + host + ":" + port + userDir);
// conf.set("fs.defaultFS", "hdfs://" + host + ":" + port + userDir);
// conf.set("hadoop.job.ugi", user);
conf.set("hadoop.job.ugi", user);
// conf.set("hadoop.job.ugi", "hdfs");
returned[0] = FileSystem.get(conf);
return null;
}
});
} catch (Exception e) {
throw new RuntimeException(e);
}
if (returned[0] == null) throw new IllegalStateException("cannot get file system");
return returned[0];
}
public static boolean isHDFSAccessible() {
IHDFSFileSystem access = null;
final String host = RemoteUtilities.getHost();
final int port = RemoteUtilities.getPort();
// RemoteUtilities.getPassword()
final String user = RemoteUtilities.getUser();
String connStr = host + ":" + port + ":" + user + ":" + RemoteUtilities.getPassword();
final String userDir = "/user/" + user;
// final String userDir = "/user" ;
try {
UserGroupInformation ugi = getCurrentUserGroup();
// throw new UnsupportedOperationException("Uncomment when using version 1.0.*");
ugi.doAs(
new PrivilegedExceptionAction<Void>() {
public Void run() throws Exception {
Configuration conf = new Configuration();
conf.set("fs.default.name", "hdfs://" + host + ":" + port);
conf.set("fs.defaultFS", "hdfs://" + host + ":" + port + userDir);
// conf.set("fs.defaultFS", "hdfs://" + host + ":" + port + userDir);
// conf.set("hadoop.job.ugi", user);
conf.set("hadoop.job.ugi", user);
// conf.set("hadoop.job.ugi", "hdfs");
FileSystem fs = FileSystem.get(conf);
Path udir = new Path(userDir);
FileStatus fileStatus = fs.getFileStatus(udir);
FsPermission permission = fileStatus.getPermission();
// fs.setPermission(udir, ALL_ACCESS);
fileStatus = fs.getFileStatus(udir);
permission = fileStatus.getPermission();
// fs.mkdirs(new Path(userDir + "/ebi/" ),IHDFSFileSystem.FULL_ACCESS);
// fs.mkdirs(new Path(userDir + "/ebi/Sample2/"
// ),IHDFSFileSystem.FULL_ACCESS);
FileStatus[] fileStatuses = fs.listStatus(udir);
for (int i = 0; i < fileStatuses.length; i++) {
FileStatus fileStatuse = fileStatuses[i];
System.err.println(fileStatuse.getPath());
}
// fs.createNewFile(new Path(userDir + "/test"));
//
// FileStatus[] status = fs.listStatus(new Path("/user/" + user));
// for (int i = 0; i < status.length; i++) {
// System.out.println(status[i].getPath());
// }
return null;
}
});
} catch (Exception e) {
return false;
}
// if (true)
// return true;
return true;
}
