[v23.1.x] Topic-aware leadership balancing #9901
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(cherry picked from commit 0c644d1)
Adds a couple of abstract classes that will be used to generalize constraints the leader balancer will be trying to maximize while balancing leadership. These clases are similar to the partition balancer's constraints. (cherry picked from commit 4a4a56a)
Defines a soft_constraint for determining error for how evenly distributed leadership is across shard in the cluster. Also moves the logic for a recommended reassignment for improving this error into a soft_constraint as well. (cherry picked from commit 24281e5)
(cherry picked from commit 93f1467)
(cherry picked from commit 26c12ec)
…ssignments (cherry picked from commit d8c7e83)
(cherry picked from commit 80a3a34)
…able (cherry picked from commit cdb6295)
This change allows one balance tick to schedule leader transfers up to that max in flight limit. This allows for the calculate state of the cluster to be reused for multiple transfer selections rather than being regenerated every selection. (cherry picked from commit 497d261)
(cherry picked from commit e3d6e69)
(cherry picked from commit c06824e)
(cherry picked from commit 7ef1c35)
(cherry picked from commit 8144487)
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@ballard26 : The failure seems to be just #9774, we are trying to cut v23.1.7 by this Wednesday; just a default balancer change left here? |
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Failure seems to be #7418 now. Force-merging. |
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Backport of PR #7997