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fix(challenge): answer a repeated relay receipt idempotently - #17
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A miner rerunning run-v2 for a round already UPLOADED resubmits the same relay receipt. relay_receipt_v2 then issued a fresh RetrievalRequest (new request_id and nonce), and the relay refused it with 400: its retrieve() commit raises RelayError "one outstanding challenge per exact object/key" because the first retrieval of the same delta still has deadline_beacon (now+10) >= the serve beacon. The relay maps RelayError to 400; the master let the httpx.HTTPStatusError escape as a 500. The 400 is a correct relay refusal, not a relay bug, so the relay is unchanged. After the receipt is verified, the master now looks up its master-acceptance for (run_id, w, hotkey): the same receipt gets the stored signed acceptance back without contacting the relay; a different receipt gets 409 RELAY_RECEIPT_CONFLICT. A first submission follows the unchanged path. Any HTTP status error from the relay acks or retrieval call now maps to a 502 ChallengeError instead of a 500. Rejected: making the relay idempotent for a new signed request. The master never reuses a request id, and the first answer stays authoritative. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
The after_upload probe only checked that the delta and relay receipts did not change, so it passed while the rerun exited 2 on the master's 500. Now that a repeated receipt is answered idempotently, the probe also requires rc 0. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
The kill-mid-round probe recorded killed_after_job_staged but never checked it. If run-v2 finished before the poll saw the island-job row, or the 120 s deadline passed before staging, the rerun returned UPLOADED and the harness reported PASS without testing a resume. Raise before the rerun unless the process was alive when killed and the island-job row exists; main() records it and exits 1. The unit test stubs a run-v2 that exits before staging. Refs: CodeRabbit review on PR #16 Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 27.27% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 22 functions across 5 files. (1 skipped: … | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the primary change: repeated relay receipt submissions are handled idempotently. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
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Docstring coverage is 27.27% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 22 functions across 5 files. (1 skipped: 1 unsupported.)
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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…ond acceptance relay_receipt_v2 looked up existing master-acceptance records only in its first transaction, then left it to call the relay over HTTP. A submission delayed on the relay (past the ~30 s challenge window) could see no acceptance there, while a concurrent submission for the same (run_id, w, hotkey) was accepted meanwhile; its second transaction then wrote a second master-acceptance with a different received_drand. The lookup moves into _accepted_receipt_v2 and runs at the start of both transactions. _tx is BEGIN IMMEDIATE under the store lock, so the re-check is atomic with the write: the same receipt returns the stored acceptance, another receipt raises 409 RELAY_RECEIPT_CONFLICT. First transaction and first submissions are unchanged. Tests wrap RelayClient.retrieval so submission A is accepted while B awaits the relay, against the real challenge store and relay. Before the fix both write two acceptance rows; after, one row, with B getting the stored acceptance (same receipt) or 409 (different receipt). Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
…nsors test_prepared_profile_opening_metadata_without_tensor_calls patches hypertrain.auditor.replay.unpack_state (and pack_state, init_params, ...) with `forbidden`. ChallengeStore imports hypertrain.auditor.worker lazily; for the audit-honest param that import happens inside the trap. When it is the first import in the process, worker.py's module-level `from hypertrain.auditor.replay import unpack_state` binds `forbidden`. monkeypatch restores replay but not worker's copy, so a later test_v2_weights_bridge.py run hits it in execute_audit_v2 and fails with "opening allocated tensors" (the "This portal is not running" teardown error is a consequence). Repro (host): pytest test_capacity_outer_v2.py test_v2_weights_bridge.py red before, green after. Relay receipt file not needed for the failure, so a leaked anyio portal there is ruled out. A sys.modules probe over all 64 params shows auditor.worker is the only cold import that captures a trapped name. CI sharding only exposed it. Pre-importing the worker binds the real functions; trap unchanged. No subprocess guard: it would test Python import semantics, not this test; the file pair is the regression proof. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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Review comments at @src/hypertrain/challenge/store.py:
- Around line 10031-10034: Update relay_receipt_v2 to map uncaught custody or
RelayClient.retrieval failures to ChallengeError status 502 by handling
httpx.RequestError/HTTPError, CorruptObjectError, RelayError, and TimeoutError
alongside the existing HTTPStatusError handling. Preserve the current HTTP
status message and leave SignatureError’s existing EnvelopeError-to-409 behavior
unchanged.
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📒 Files selected for processing: 6
docs/network-v2.mdscripts/mine_multi_round_v2.pysrc/hypertrain/challenge/store.pytests/challenge/test_capacity_outer_v2.pytests/challenge/test_relay_receipt_idempotent.pytests/test_mine_multi_round_v2.py
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Summary
Follow-up to #16. A miner that reruns
run-v2for a round that is already UPLOADED now gets a clean no-op (exit 0,{"status": "UPLOADED"}) instead of HTTP 500, and the multi-round harness fails if its mid-round SIGKILL did not hit a staged job.Why
After #16 the crash-resume case passes (job re-emission is idempotent), but a rerun after UPLOADED still failed:
POST /v2/relay-receiptsreturned 500 because the master asked the relay for a second live retrieval of the same object (POST /v1/retrievals-> 400) andrelay_receipt_v2let thehttpx.HTTPStatusErrorescape. No double send, no state change, but a 500 and rc=2 for a harmless restart. CodeRabbit also noted (PR #16, minor) that the SIGKILL probe could pass without having killed anything.What changed
src/hypertrain/challenge/store.pyrelay_receipt_v2: a repeated receipt for the same(run_id, w, hotkey)returns the stored master acceptance without calling the relay; a different receipt for an accepted key stays refused (409RELAY_RECEIPT_CONFLICT); a relayHTTPStatusErroris mapped to a clean 502 instead of an unhandled 500. First submissions are unchanged.tests/challenge/test_relay_receipt_idempotent.py— repeat receipt, conflicting receipt, relay 400 mapping, first-submission behaviour.scripts/mine_multi_round_v2.py— theafter_uploadprobe now requiresrc == 0; the kill probe raises unless the process was alive and the island job staged.tests/test_mine_multi_round_v2.pyproves the guard fires.docs/network-v2.md— one sentence.How it was tested
Before the fix the same run gave
after_upload.rc == 2(HTTP 500). Not reviewed by Lens yet.Risk and rollback
Only
relay_receipt_v2changes, and only for a receipt that is already recorded or for a relay error that used to be a 500. Rollback: revert the merge commit.Owner after merge
Forge (CTO Cortex Foundation).
Checklist
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Summary by CodeRabbit
Bug Fixes
409 RELAY_RECEIPT_CONFLICT.502errors.Documentation
run-v2guidance to describe rerun, receipt conflict, and successful idempotent submission behavior.