Twitter’s Scalding and Algebird: Matrix and Lighweight Algebra Library by Alex Popescu.
Alex points out:
- Scalding now includes a type-safe Matrix API
- In the familiar Fields API, we’ve added the ability to add type information to fields which allows scalding to pick up Ordering instances so that grouping on almost any scala collection becomes easy.
- Algebird is our lightweight abstract algebra library for Scala and is targeted for building aggregation systems (such as Storm).
Of the three, I am going to take a look at Algebird first.