mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-10 07:34:04 -08:00
a90d645378
Before, we checkpointed after every newly detected fingerprint collision, which is not a problem as long as collisions are rare. However, with a sufficient number of metrics or particular nature of the data set, there might be a lot of collisions, all to be detected upon the first set of scrapes, and then the checkpointing after each detection will take a quite long time (it's O(n²), essentially). Since we are rebuilding the fingerprint mapping during crash recovery, the previous, very conservative approach didn't even buy us anything. We only ever read from the checkpoint file after a clean shutdown, so the only time we need to write the checkpoint file is during a clean shutdown. |
||
|---|---|---|
| .. | ||
| codable | ||
| fixtures/b0 | ||
| index | ||
| storagetool | ||
| chunk.go | ||
| crashrecovery.go | ||
| delta.go | ||
| delta_helpers.go | ||
| doubledelta.go | ||
| heads.go | ||
| instrumentation.go | ||
| interface.go | ||
| locker.go | ||
| locker_test.go | ||
| mapper.go | ||
| mapper_test.go | ||
| persistence.go | ||
| persistence_test.go | ||
| preload.go | ||
| series.go | ||
| storage.go | ||
| storage_test.go | ||
| test_helpers.go | ||
| varbit.go | ||
| varbit_helpers.go | ||
| varbit_test.go | ||