Bucketing
Classes
- Bucket
- BucketRun
- A mismatched pair is constructible; ExternalSort's mint sites keep it consistent.
- Buckets
- HashBucketing
- KeyGrouping
- Collects rows sharing a key into one batch, so a downstream operator sees each key exactly once and contiguously.
- SeenKeys
- The keys a stream brought so far, each held as its 16-byte xxh128 digest, so a long key costs no more than a short one.