apache/spark · v4.2.0 · 32f7299601

How this atlas is built

one data file, two views, one verification harness

Source of truth

data.mjs holds every structure, flow, and chapter. bun build.mjs renders atlas.html (this page) and SYSTEM.md (the text twin). Nothing generated is edited by hand.

Citations

Every structure cites file + symbol in apache/spark, pinned to tag v4.2.0 (32f7299601). bun validate.mjs re-verifies each citation against a local sparse worktree of that tag and fails the build on any drift — a box that does not map to real code does not ship.

Lineage

Renderer vendored from inkboard/system-atlas (MIT). Substance grounded in the gis-learning exercises 0004–0011: two pushdown rails, PhysicalOperation expeditions, and the Esri feature-service connector design decisions.

Filesystem

references/spark-4.2.0-atlas/
  data.mjs  build.mjs  template.html  validate.mjs
  atlas.html  SYSTEM.md  (generated)
  vendor/  (pristine upstream + LICENSE)