v1.0.2

openglacier Core v1.0.2 — antaa palaa

A faster query engine: typed batches, partial documents and smarter joins.

v1.0.2 is a performance release. Queries return the same rows; most of them do less work to get there.

Query engine

• Typed batches: row-local stages, group, unwind and pivot cells run on batches of typed columns, with a
  typed group key and dense measure states.
• Partial documents: a query decodes only the fields it reads; Top-N ranks on partial documents and hydrates
  the winners only.
• Top-N is pushed through the stages that keep rows as they are.
• Joins: a lookup on equality is served by a hash join, and a bounded lookup indexes only the joined rows
  it can match (semi-join).
• Ordered scans stream from the resident primary index instead of sorting every entry; samples are drawn
  from the primary index.
• Constant expressions are folded; row-local stages are compiled once; group measures fold from borrowed storage
  values; a same-collection union counts with one shared scan.
• The memory governor reads available memory without sampling /proc.

Language

• Several fields and expressions as pivot values.
• \uXXXX escapes in strings.
• null sorts like a missing field instead of failing.

Fixes

• The connection queue.
• A routing invariant violation answers an error instead of stopping the daemon.

---

Full Changelog: v1.0.1...v1.0.2

Small core, long life.