Segment 13

This sub-session resolved two major production bugs in the ProofShare system. First, a deadlock in TaskRequestProofs where CreateWorkAsk retried HTTP 429 responses indefinitely, blocking the poll loop from discovering matched work. The fix made CreateWorkAsk return a sentinel error immediately on 429, allowing the poll loop to continue with exponential backoff. Second, a job ID collision in cuzk caused concurrent proofshare challenges (all targeting miner=1000, sector=1) to mix partition results, producing invalid proofs. The fix added the harmony task ID to the RequestId, making it unique per invocation. Additional improvements included scoping the dedup SELECT to non-submitted rows, changing orphan cleanup from DELETE to UPDATE, and purging completed rows older than two days. After overcoming Docker build cache issues by using bind mounts, the Curio binary was rebuilt and deployed to the remote host. The assistant then audited all other cuzk RequestId callers to confirm no similar vulnerability existed. Finally, all proofshare fixes (deadlock, job_id collision, queue cleanup) were consolidated with the earlier cuzk self-check enforcement and test infrastructure changes into a single amended commit, and the final Docker image (theuser/curio-cuzk:latest) was built and pushed.

Two Production Bugs, One Pipeline: Deadlock, Collision, and the Path to a Final Docker Image 4067 words

Chunks

• Two Bugs, One Pipeline: Debugging a Distributed Proving System's Deadlock and Job ID Collision
  2585 words
• From Build Cache to Docker Push: The Full Arc of a Production Fix in a Distributed GPU Proving System
  2111 words