geo-engine / geoengine / 42035170878

88%

main: 88%

Build Type

push

github

Committed by web-flow

Commit Message

fix(backend): rank GDAL workers by what they hold open (#1403)

* fix(backend): rank GDAL workers by what they hold open

Workers whose open dataset does not match a request all scored 0, so the
broker took the first idle one. As released workers are pushed last and
taken with `swap_remove`, that was usually the most recently used
worker, evicting a hot dataset.

Replace the float affinity scores with an ordered rank (hit > fresh >
evict), so the tiers cannot overlap:

- hits rank by band, then window distance; idle time does not decay
  them, as cached blocks do not expire
- stop the scan only at a perfect match (same dataset, band and window)
- evict a dataset that another worker also holds first, then the least
  recently used one
- a worker whose read failed holds nothing, as a failed open closes its
  previous dataset

* refactor(backend): split the GDAL broker's try_dispatch into scan, choice and start of the read

Coverage Stats

299 of 308 new or added lines in 1 file covered. (97.08%)

2 existing lines in 1 file now uncovered.

138810 of 157542 relevant lines covered (88.11%)

533305.27 hits per line