/** Copy FileSystem files to local files. */
public static boolean copy(
FileSystem srcFS, Path src, File dst, boolean deleteSource, Configuration conf)
throws IOException {
if (srcFS.getFileStatus(src).isDir()) {
if (!dst.mkdirs()) {
return false;
}
FileStatus contents[] = srcFS.listStatus(src);
for (int i = 0; i < contents.length; i++) {
copy(
srcFS,
contents[i].getPath(),
new File(dst, contents[i].getPath().getName()),
deleteSource,
conf);
}
} else if (srcFS.isFile(src)) {
InputStream in = srcFS.open(src);
IOUtils.copyBytes(in, new FileOutputStream(dst), conf);
} else {
throw new IOException(src.toString() + ": No such file or directory");
}
if (deleteSource) {
return srcFS.delete(src, true);
} else {
return true;
}
}
/** Copy files between FileSystems. */
public static boolean copy(
FileSystem srcFS,
Path src,
FileSystem dstFS,
Path dst,
boolean deleteSource,
boolean overwrite,
Configuration conf)
throws IOException {
dst = checkDest(src.getName(), dstFS, dst, overwrite);
if (srcFS.getFileStatus(src).isDir()) {
checkDependencies(srcFS, src, dstFS, dst);
if (!dstFS.mkdirs(dst)) {
return false;
}
FileStatus contents[] = srcFS.listStatus(src);
for (int i = 0; i < contents.length; i++) {
copy(
srcFS,
contents[i].getPath(),
dstFS,
new Path(dst, contents[i].getPath().getName()),
deleteSource,
overwrite,
conf);
}
} else if (srcFS.isFile(src)) {
InputStream in = null;
OutputStream out = null;
try {
in = srcFS.open(src);
out = dstFS.create(dst, overwrite);
IOUtils.copyBytes(in, out, conf, true);
} catch (IOException e) {
IOUtils.closeStream(out);
IOUtils.closeStream(in);
throw e;
}
} else {
throw new IOException(src.toString() + ": No such file or directory");
}
if (deleteSource) {
return srcFS.delete(src, true);
} else {
return true;
}
}
public static void recursePath(Configuration conf, Path path, Job job) {
try {
FileSystem fs = path.getFileSystem(conf);
FileStatus[] fstats = fs.listStatus(path);
if (fstats != null) {
for (FileStatus f : fstats) {
Path p = f.getPath();
;
if (fs.isFile(p)) {
// connection times out otherwise
System.err.println("file:" + p.toString());
FileInputFormat.addInputPath(job, p);
} else {
System.err.println("dir:" + p.toString());
recursePath(conf, p, job);
}
}
}
} catch (IOException e) {
// shouldn't be here
throw new RuntimeException(e);
}
}