Some related changes:
1. Jay Pipes' patch https://review.opendev.org/#/c/623558/ to redo the host mapping / instances query to go from O(N) to O(1) which CERN is using in production.
2. Surya's patch https://review.opendev.org/#/c/635532/ to pre-filter cells based on the allocation candidates (hosts) returned from placement.
Some related changes:
1. Jay Pipes' patch https:/ /review. opendev. org/#/c/ 623558/ to redo the host mapping / instances query to go from O(N) to O(1) which CERN is using in production.
2. Surya's patch https:/ /review. opendev. org/#/c/ 635532/ to pre-filter cells based on the allocation candidates (hosts) returned from placement.