Can I retrieve specific key range from a table in RandomPartitioner?

[ChingShen]

Hi all,

   Can I retrieve specific key range from a table in RandomPartitioner?
Because I always got below exception:
Exception in thread "main" InvalidRequestException(why:start key's md5 sorts
after end key's md5.  this is not allowed; you probably should not specify
end key at all, under RandomPartitioner)

Thanks.

Shen