A bit late with the post, but here is Cascading 1.2:
This release features many performance and usability enhancements while remaining backwards compatible with 1.0 and 1.1. Specifically:
- Performance optimizations during grouping (StreamComparator)
- Composable map-side partial aggregations (AggregateBy)
- Native Riffle support for non-Cascading (or nested iterative Cascading) processes (ProcessFlow and Riffle)
Cascading is part of the extensive Hadoop tooling ecosystem.