Posted in Programming | Posted on 30-07-2012|
I have already created a project called Pigitos which is a set of tiny, but highly useful Java UDFs for Apache Pig.
Currently, Pigitos contains a couple of UDFs that support working with maps. It provides UDFs to calculate the size of the map and get map’s keys (or values, or key/value pairs) as a bag. Such UDFs are very useful when working with dynamically created column qualifiers (that hold some meaningful information that you want to process) in Apache HBase tables.