webhdfs unicode issue

One of my Map/Reduce task generated a folder, with name in Unicode.

I can access this folder from web page, I mean, from the port 50075 page to browser it.


But I just got "?" instead of these 2 Unicode characters by WebHDFS API.

I'm using HDFS version: 2.0.0-CDH4.0.1
Will work on this issue in the following days.