@Override
public void setPermission(String src, FsPermission permission)
throws AccessControlException, FileNotFoundException, SafeModeException,
UnresolvedLinkException, IOException {
SetPermissionRequestProto req = SetPermissionRequestProto.newBuilder()
.setSrc(src)
.setPermission(PBHelper.convert(permission))
.build();
try {
rpcProxy.setPermission(null, req);