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唐小鸭
a076ae4045
P1-20 (rustfs/backlog#1675 B2, test-only). No prior test wrote objects BEFORE the replication rule arrived, leaving the scanner's existing-object resync pass — the only channel for such objects — without end-to-end coverage, and the enqueue truth table partially unpinned at unit level. e2e (both negative cells are contracts, asserted over multiple fast-scanner cycles next to a replicated control key that proves the scanner and the live path are running): - test_scanner_compensates_existing_objects_across_write_paths: plain PUT, CopyObject and Snowball auto-extract products written pre-rule all converge via scanner compensation; a null-version object (PUT before the bucket became versioned) is pinned as never compensated (the scanner heal gate skips nil-version objects). - test_scanner_never_compensates_when_existing_object_replication_disabled: ExistingObjectReplication=Disabled is a contract, not a delay — existing keys stay absent while post-rule writes replicate normally. Unit truth-table pins (crates/replication): - queue.rs: an empty replicate decision (Disabled existing-object, inbound REPLICA) skips heal queueing for every status; Completed without a resync decision skips. - operation.rs: existing-object resync without a reset replicates exactly the never-replicated (Empty) objects. Helper: put_bucket_replication_with_statuses parameterizes the previously hardcoded ExistingObjectReplication status; the nextest count comments are refreshed to the post-rebase totals.