| Variable | LOCAL_STORAGE_PREFILL_PERCENTAGE | |
| Introduced Version | 1.109.0 | |
| Description | Controls eager prefilling of disks from bucket storage | |
| Default | 70% of LOCAL_STORAGE_PERCENTAGE | |
| Minimum | 0 | |
| Maximum | LOCAL_STORAGE_PERCENTAGE -1 | |
This variable controls eager prefilling of disks from bucket storage.
LogScale will eagerly download segments from bucket storage to hit the target fill rate on the local disk, controlled by the new setting.
The minimum allowed value is 0,
which disables prefilling. The maximum value is equal to the value of
LOCAL_STORAGE_PERCENTAGE, minus one. The default value is
70% of the percentage set in LOCAL_STORAGE_PERCENTAGE.
In previous versions, LogScale would also prefill, but the target fill
rate was not controllable, and was hard coded to 70% of the percentage set
in LOCAL_STORAGE_PERCENTAGE.