[8.8] Balance priorities during reconciliation (#95454) #96148
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When reconciling a balance with a lot of shards on undesired nodes there is a possibility of causing node hot spots due to usage of nodeInterleavedShardIterator. This iterator orders shards based on nodes they are located and order nodes based hash map iteration. This means it tends to pick shards returned first by the iterator. This change uses OrderedShardsIterator that applies custom shards order based on allocation recency. (cherry picked from commit 6ecd74d)
idegtiarenko
added
>bug
:Distributed Coordination/Allocation
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Backports the following commits to 8.8: