[v23.2.x] c/controller_backend: try to force-abort reconfiguration only on leaders #18044
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Previously, when force-aborting a reconfiguration, we appended an aborting configuration on all replicas. This can lead to log inconsistencies as on followers the configuration will be duplicated (one from own append, one replicated by the leader). Although these inconsistencies are expected for force-abort, if the leader is alive, we can minimize the chance of their appearance by waiting on followers for the aborting config to be replicated from the leader. Fixes redpanda-data#17847 (cherry picked from commit 8e221d3)
piyushredpanda
approved these changes
May 1, 2024
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Backport of PR #18021
Fixes #18040