CodecFactory specify the list of codec that are supported by Hadoop. However, it returns a codec only by a file's name. I would like to make getCodec method to alternatively take a codec's class name.
This is required by
1. it allows an HDFS admin to configure which codec to use to save an image.
2. It stores the codec class name in its on-disk image instead of a file's suffix.
When saving and reading an image, I'd like to get an codec from CodecFactory by its class name.