for (int i = 0; i < 10; i ++) {
TachyonURI dir = new TachyonURI("/i" + i);
mMasterInfo.mkdirs(dir, true);
dirIds.add(mMasterInfo.getFileId(dir));
for (int j = 0; j < 10; j ++) {
ids.add(mMasterInfo.createFile(dir.join("j" + j), 64));
}
}
HashSet<Integer> listedIds =
new HashSet<Integer>(mMasterInfo.listFiles(new TachyonURI("/"), true));
HashSet<Integer> listedDirIds =