DGR-058: Harden worker and stream failure semantics #42

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popov · 2026-07-16T20:36:06Z

popov commented

2026-07-16 20:36:06 +00:00

DGR-058: Harden worker and stream failure semantics

Status / triage: specification only; ready-for-agent; passes: false
Execution mode: AFK
Milestone: M4
Dependencies: DGR-040, DGR-042, DGR-056
Blocks (derived): DGR-059, DGR-060, DGR-061
Labels: area:reliability, area:failure, type:hardening, priority:p1, ready-for-agent
Evidence class: fixture
Hardware: none
Model: generic
Upstream: no

Objective / description

Fresh Ralph session: read .scratch/distributed-gguf-runtime/RALPH-CONTEXT.md, source issue .scratch/distributed-gguf-runtime/issues/058-harden-worker-and-stream-failure-semantics.md, and evidence READMEs for dependencies (DGR-040, DGR-042, DGR-056) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Ensure malformed input, process death, transport reset, and cancellation terminate cleanly.

Acceptance criteria

Test worker death, stream reset, malformed bundle, checksum failure, deadline, cache miss, stale epoch, and partial fragment loss.
Cancellation propagates across all stages and releases KV/state, queue entries, and fragment buffers.
Duplicate steps are idempotent; uncertain mutations are never silently replayed.
Billing/work outcomes distinguish completed, cancelled, failed, and unverified work.
Applicable shared quality gates in prd.json pass, and the evidence handoff records exact commands/results, changed files, limitations, and dependency handoff.

Shared quality gates

Targeted deterministic tests pass; Python changes also pass python -m compileall packages tests.
git diff --check passes.
Default tests are model-download-free, API-credit-free, and GPU-free.
Evidence README records exact changed files, commands/results, limitations, and dependency handoff; no fabricated evidence or inherited completion credit.

Evidence handoff

Write and verify .scratch/distributed-gguf-runtime/evidence/DGR-058/README.md. Until every criterion and applicable gate has real evidence, this story remains passes: false. Legacy evidence is provenance only, not completion credit.

# DGR-058: Harden worker and stream failure semantics - **Status / triage:** specification only; `ready-for-agent`; `passes: false` - **Execution mode:** `AFK` - **Milestone:** `M4` - **Dependencies:** `DGR-040`, `DGR-042`, `DGR-056` - **Blocks (derived):** `DGR-059`, `DGR-060`, `DGR-061` - **Labels:** `area:reliability`, `area:failure`, `type:hardening`, `priority:p1`, `ready-for-agent` - **Evidence class:** `fixture` - **Hardware:** `none` - **Model:** `generic` - **Upstream:** `no` ## Objective / description Fresh Ralph session: read `.scratch/distributed-gguf-runtime/RALPH-CONTEXT.md`, source issue `.scratch/distributed-gguf-runtime/issues/058-harden-worker-and-stream-failure-semantics.md`, and evidence READMEs for dependencies (DGR-040, DGR-042, DGR-056) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Ensure malformed input, process death, transport reset, and cancellation terminate cleanly. ## Acceptance criteria - [ ] Test worker death, stream reset, malformed bundle, checksum failure, deadline, cache miss, stale epoch, and partial fragment loss. - [ ] Cancellation propagates across all stages and releases KV/state, queue entries, and fragment buffers. - [ ] Duplicate steps are idempotent; uncertain mutations are never silently replayed. - [ ] Billing/work outcomes distinguish completed, cancelled, failed, and unverified work. - [ ] Applicable shared quality gates in `prd.json` pass, and the evidence handoff records exact commands/results, changed files, limitations, and dependency handoff. ## Shared quality gates - Targeted deterministic tests pass; Python changes also pass `python -m compileall packages tests`. - `git diff --check` passes. - Default tests are model-download-free, API-credit-free, and GPU-free. - Evidence README records exact changed files, commands/results, limitations, and dependency handoff; no fabricated evidence or inherited completion credit. ## Evidence handoff Write and verify `.scratch/distributed-gguf-runtime/evidence/DGR-058/README.md`. Until every criterion and applicable gate has real evidence, this story remains `passes: false`. Legacy evidence is provenance only, not completion credit.

popov added this to the M4 milestone 2026-07-16 20:36:06 +00:00

popov added the priority:p1 area:reliability area:failure ready-for-agent status:blocked type:hardening labels 2026-07-16 20:36:06 +00:00

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Reference: popov/neuron-tai#42