In this case it was about shard allocation settings. They were sharing that setting allocation to `all` shouldn’t cause any change.
The documentation was technically correct in that sense that setting `all` doesn’t trigger reallocation.
BUT…
The documentation was technically correct in that sense that setting `all` doesn’t trigger reallocation.
BUT…
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For example, if a node has reached its watermark disk usage or if the cluster is unbalanced it may attempt to distribute shards.