a6f663f002
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Fixes the two defects a malformed probe exposed on the live cluster, plus the
coverage gap that let a stale assertion survive the same day it was falsified.
TASK 17 — validate before the WAL append. A 128-dim vector against a 1536-dim
slot was appended to the WAL FIRST, then validated, then answered 500 — so an
already-durable, unapplicable record shipped to both followers, halted both
receivers, and put shard 1 into a quorum-write outage. Validation now runs before
the append and returns 400 via invalid_input; nothing enters the log.
`storage::vector::validate_dimensions` is now the single comparison, replacing an
inline duplicate of the same rule in lifecycle/ops.rs:57-62 — two copies of a
dimension check drift, and the apply-path copy is the one that halts replication
when it disagrees.
The receiver's halt-vs-skip decision is now explicit instead of "halt on
anything". A record whose failure is deterministic and node-independent (schema
width) is skipped, counted on blobs_apply_failed_total and ERROR-logged, so the
frontier advances; a record that could become applicable after a binary upgrade
(unknown batch kind, capability skew) still halts, because skipping那 would
silently drop replicated data. Both branches are proven reachable by tests.
TASK 18 — the reseed latch outlived its discharge. A node hosting 3 shard groups
latched a marker per group but discharged on a single seqno, so two latches meant
permanent 503 on a node whose every shard read lag 0 — it hit all three pods
during the roll and each needed a manual delete. Gaps are now tracked per group
in a ReseedGapSet and cleared on evidence about themselves; a REFUSED
reseed_self_restart re-evaluates every 15s instead of waiting for a latch that
never arrives. /health's cause ladder was also lying: it printed "joiner boot not
yet converged" for a node whose groups had all converged, because the fallback
asserted a state it never tested. It now names the outstanding gaps, gained the
decommissioned-by-signal arm that is_ready checked but the ladder did not, and
its terminal arm says "reason unavailable" rather than inventing one.
COVERAGE — 14 of 23 integration suites were run by NO pipeline. Not theoretical:
cluster_routes still asserted the wire fabrication removed hours earlier
(applied_events == 0 with a lag derived from it) and nothing caught it because
nothing ran it. cluster_sharding (dense-rank, /sharded/* opt-in), vector_search
(distance contract) and cluster_poison_embedding (task 17's own gate) were in the
same position, so those guards would have rotted identically. Every suite now has
a runner: 8 in-process ones in a new `fast-suites` push step (measured 71s, runs
FIRST so a cheap failure precedes the 6.5-min gate), 6 multiproc ones in the
nightly. All 23 scheduled; all 4 never-before-run heavy suites verified passing
before being scheduled.
Also fixes cluster_chaos.rs:329, which the nightly's FIRST EVER run caught 13
minutes in — it demanded an unreachable peer report worst-case lag, i.e. it
required the fabrication task 04a deleted.
Verified: fmt clean; clippy 72 vs 73 baseline (one FEWER, zero added, measured on
touched trees at
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|---|---|---|
| .. | ||
| audit.rs | ||
| election_driver.rs | ||
| forward.rs | ||
| http_tls.rs | ||
| join_boot.rs | ||
| membership.rs | ||
| mod.rs | ||
| node_reseed_gap_tests.rs | ||
| node.rs | ||
| reseed_restart.rs | ||
| reseed.rs | ||
| routes.rs | ||
| security.rs | ||
| snapshot.rs | ||
| state.rs | ||
| topology.rs | ||
| transport.rs | ||