[v24.1.x] CORE-1972 don't mark rebalance complete if some partitions are not moveable #18518
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(cherry picked from commit 39a5ec4)
Previously, we finished counts rebalance if no new moves could be found, even when some partitions were not moveable. This could lead to finishing too early and not achieving balanced distribution when many partitions were not moveable (e.g. because they are disabled due to recovery mode). (cherry picked from commit 46e7a58)
Allows not starting all nodes at once. (cherry picked from commit d54e6b6)
Test that rebalancing after node addition eventually achieves balanced distribution, even though some nodes were temporarily in recovery mode. (cherry picked from commit 588ca47)
ztlpn
approved these changes
May 16, 2024
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Backport of PR #18489