1.3. What’s New in 0.179-t.0.1
The following is notable functionality added in 0.179-t.0.1
Cost-Based Optimizer
- Cost-based join reordering
 - Determine join distribution type based on statistics
 - Show estimated statistics in 
EXPLAIN 
Spill to Disk
- Spill-to-disk for inner joins
 - Improved spill-to-disk for aggregations
 
Performance
- Distributed merge sort
 - Improve performance for selective filters
 - Numerous other performance improvements, bug fixes, and other features
 
Release Notes
Also see release notes Release 0.179-t