KeyGroupedPartitioning¶
KeyGroupedPartitioning is a Partitioning where rows are split across partitions based on the partition transform expressions.
KeyGroupedPartitioning is a key part of Storage-Partitioned Joins.
Note
Not used in any of the built-in Spark SQL connectors yet.
Creating Instance¶
KeyGroupedPartitioning takes the following to be created:
- Partition transform expressions
- Number of partitions