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fix(scanner): fit usage persistence within publication lease (#6967)

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Lower the default scanner cache save timeout so the derived usage persistence budget stays inside the effective distributed publication lease window.

Add focused regressions for the default publication budget and bootstrap-pending observational baselines, and update operator docs with the new default.

Co-authored-by: heihutu <heihutu@gmail.com>
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houseme
2026-08-31 22:58:29 +08:00
committed by GitHub
parent 7541bb2c5d
commit 281e40f1cc
7 changed files with 64 additions and 5 deletions
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docs/operations/scanner-runtime-controls.md
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@@ -57,7 +57,7 @@ The `/v3/scanner/status` response reports each effective runtime value with a
| `scanner.cycle_max_directories` | `RUSTFS_SCANNER_CYCLE_MAX_DIRECTORIES` | directories | `0` | Caps directories entered by one cycle. `0` disables this budget. |
| `heal.bitrot_cycle` | `RUSTFS_SCANNER_BITROT_CYCLE_SECS` | seconds | `2592000` | Controls periodic deep bitrot scans. `false`, `off`, `no`, or `disabled` disables periodic deep scans; `0`, `true`, `on`, or `yes` runs deep mode every scanner cycle. |
| `scanner.idle_mode` | `RUSTFS_SCANNER_IDLE_MODE` | boolean | `true` | Enables scanner sleeps and cooperative throttling. |
| `scanner.cache_save_timeout` | `RUSTFS_SCANNER_CACHE_SAVE_TIMEOUT_SECS` | seconds | `30` | Timeout for saving scanner cache; runtime enforces a minimum of `1`. |
| `scanner.cache_save_timeout` | `RUSTFS_SCANNER_CACHE_SAVE_TIMEOUT_SECS` | seconds | `14` | Timeout for saving scanner cache; runtime enforces a minimum of `1` and keeps the default persistence budget within the distributed publication lease. |
| `scanner.max_concurrent_set_scans` | `RUSTFS_SCANNER_MAX_CONCURRENT_SET_SCANS` | count | `4` | Caps concurrent set-level scanner tasks. `0` keeps topology-derived concurrency. |
| `scanner.max_concurrent_disk_scans` | `RUSTFS_SCANNER_MAX_CONCURRENT_DISK_SCANS` | count | `4` | Caps concurrent disk bucket walks per set. `0` keeps disk-count-derived concurrency. |
| `scanner.yield_every_n_objects` | `RUSTFS_SCANNER_YIELD_EVERY_N_OBJECTS` | objects | `128` | Controls how often object loops yield to the async runtime. `0` disables this extra yield. |