Data Miner

v0.0.0-beta.2 - Async log capture, no more reload freeze

Bug-fix beta for Minecraft 1.21.1 / NeoForge 21.1.249. Fixes a client freeze / extremely slow resource-pack reload on large modpacks and removes an unused networking feature.

Fixed

• Client freeze / very slow resource-pack reload (F3+T): CapturedAppender used to flush() to disk under a lock on every WARN/ERROR record, on the logging thread. On a large modpack a reload emits thousands of warnings in parallel, so the reload worker threads (and the render thread) serialized on per-line disk I/O and the client appeared to hang. The appender now hands formatted lines to a bounded queue drained by a single daemon writer (DataMiner-LogCapture) with one flush per batch; the logging thread never touches disk and never blocks (lines are dropped and counted if the queue is full).
• Issue detector writes: IssueRegistry no longer opens/writes/closes issues.jsonl / lootr_missing_tables.jsonl per matching record on the logging thread; those writes moved onto their own daemon writer (DataMiner-IssueWriter). The five known-issue detectors are unchanged.
• Server tick cost while the latency tracer is running: PerfEventHandlers now captures the all-entities / all-chunks slow-tick snapshot at most once per second instead of on every slow tick (which, on an overloaded server, meant every tick).

Removed

• Client reload detection with server reporting: the client PreparableReloadListener that logged a stack trace and sent a ClientReloadPayload to the server on every resource reload, plus its payload type and server handler (DataMinerClientNetworking, DataMinerServerNetworking, DataMinerNetworkPayloads), have been deleted. Data Miner no longer registers any network payload.

Notes

Diagnostic / dev tool, no gameplay content. Verified: ./gradlew build is green and the mod compiles clean against the 1.21.1 API. The reload-freeze fix has not yet been verified in-game against a full modpack — feedback welcome.

JAR: data_miner-1.21.1-neoforge-21.1.249-0.0.0-beta.2.jar

Tag: 1.21.1-neoforge-0.0.0-beta.2