- PregenChunkRetention holds every chunk in a FULL request's dependency square until all in-area regions reaching it drained; drained regions keep only the border strips undrained neighbours need
- Removes the unload/reload churn (about 1.5 reloads per generated chunk at r1000: lattice passes, next region's border, future-region and ring protos)
- Capped at one chunk per MB of heap; over the cap the drained strips farthest from the active region are released; heap pressure and close release everything
- Regions still save and unload at drain; the early-unload test now pins that plus border retention
- saved biome capture resolves each quart column through one engine call
- column-invariant height, region, surface and cave fallback resolved once
- cavern reads use one pinned mantle chunk per column
- saved biome cells interned per capture
- engine getters borrow the bound route runtime for other chunks instead of opening a stage
- dimension stack metadata clearing and continuation restore rewrite cavern cells after sCave, so they drop the context snapshot and decoration re-reads the mantle
- test that decoration reuses only its own chunk's snapshot
- boundary columns build runs directly instead of voxel lists, tree sets and hash maps
- palette sorted once per column with a direct comparator, same canonical order
- geometry source reuses the last encoded voxel
- equivalence test against the previous encoding
- close reads each window slot before the atomic swap instead of swapping all 5,929 slots
- terrain-ready flags live with the terrain access and exist only on content writers
- Over the plate cap, the least recently used idle plates are saved one at a time on the IO pool while submissions continue
- Submissions wait only past the cap plus a small overshoot
- Replaces trimming and unloading every idle plate, which evicted the active working set and read it back
- eager terrain window covers the replayed object sources plus one chunk of footprint (radius 13 instead of 19 for overworld)
- content writers generate a chunk's missing terrain components before handing it out, so reads past the window stay identical
- getEagerInputRadius replaces isInputGenerationLazy
- sCave copies the chunk's cavern and hydrology terrain view once (journal originals win) instead of per-voxel monitor, journal and slice lookups
- hydrology lookups answer null without work in chunks with no cave cells
- decorateNaturalCaves reuses the sCave snapshot through the chunk context
- Each thread keeps its recent final hasColumnsAround answers next to its chunk slots, so the object and hydrology gates skip the nine-chunk scan on repeat
- frames live in a 256-slot table indexed by thread id, ThreadLocal only on slot collisions
- the single ThreadLocal probed long collision chains in the workers' thread-local maps
- Index planned tiles by occupied chunk; empty chunks skip composition, tile residency and cave-cell lookups
- Plan the whole pregen area nearest first with several roots, past the tile budget when plans persist
- Restore persisted tiles without a planning root permit
- Never memoize answers the server thread gave before its hydrology plan landed
- Semantic journal and saved-biome appends write without forcing; a shared flusher forces touched files within 2s outside every store lock
- GenerationHistory.sync forces pending history at world save, engine shutdown, pregen completion and before activation promotion
- A failed deferred force poisons the store the same way an uncertain append did
- Cache the active epoch pack root instead of regex-validating it on every stage open
- Tests pin append-without-force, sync barriers, failure poisoning and the save, shutdown and pregen hooks
- Ellipsoid footprint dry run replays the build draws without building
- Terrain-scoped clumps above every column limit are dropped before building
- Surface biome filters no chunk column passes skip the deposit
- parent biome lookups read the biome stream directly instead of building the boundary field
- fields are only built where a parent with floating children needs edge distances
- Bukkit noise generation keeps one biome per column until a partial column write
- drops the full-resolution biome array allocation and fill per chunk
- Cache vanilla withProperty variants per state
- Cache rotated states per rotation and quantized spin
- Hoist the stilt dirt state and rotate only target-layer stilt blocks
- Store source plans as packed per-destination cell runs over a value table
- Weigh shared payloads once and give tiles and markers finite weights
- Release a plan once every touched destination consumed it, keeping its index
- Rebuild only on repeated consumption; debug stats for builds and waits
- ChunkDataHunkHolder stores cells in a plain array and tracks each column's highest stored y
- natural cave decoration and perfection stop scanning above the column top
- sBiome, floating biomes and publishNaturalMetadata no longer write MatterBiomeInject; nothing reads it
- stack metadata clearing only runs for dimension stacks
- Version is 4.1.2-26.2 across platform builds
- Plugin builds use shared automatic jar selection
- Native adapters remain bundled in selected artifacts
- Plugin export tasks copy the selected artifact
- The previous plugin packer is removed
- The agent tracks primary storage closure during Spigot shutdown
