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compaction-multipliers
| Default | 3,4,6,5 |
| Allowed Values | Four comma-separated integers |
| Category | Compaction |
Note
IMMUTABLE AFTER INITIAL SETUP: This parameter is persisted in the catalog. Changing it after the cluster's first start affects all higher generation durations and causes silent data divergence. Set this at cluster creation time only. When cloning parameter groups, this value must be copied unchanged.
Detailed Explanation:
Defines the size multipliers for each compaction generation level beyond Gen2. With the default compaction-gen2-duration of 20 minutes and multipliers of 3,4,6,5: Gen2 = 20m, Gen3 = 20m × 3 = 1h, Gen4 = 1h × 4 = 4h, Gen5 = 4h × 6 = 24h, Gen6 = 24h × 5 = 5d.
Recommendation: Keep at 3,4,6,5 (default) for all instance sizes.
