DigitalPebble/storm-crawler — pull request #36 by jnioche (2014-12-11 13:41:07+00:00)
Title: Replace Map<String,String[]> with serializable Metadata

Having a wrapper for Metadata would be a bit more elegant than moving the Map around.
This initial implementation adds Metadata and removes the KeyValues utility. Later on we can replace all occurrences of Map and systematically use Metadata instead.