Autoscaling reactive storage decider (#65520) #66236
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The reactive storage decider will request additional capacity proportional to the size of shards that are either: * unassigned and unable to be allocated with only reason being storage on a node * shards that cannot remain where they are with only reason being storage and cannot be allocated anywhere else * shards that cannot remain where they are and cannot be allocated on any node and at least one node has storage as the only reason for unable to allocate. The reactive storage decider does not try to look into the future, thus at the time the reactive decider asks to scale up, the cluster is already in a need for more storage.
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Backport of #65520
The reactive storage decider will request additional capacity
proportional to the size of shards that are either:
on a node
storage and cannot be allocated anywhere else
on any node and at least one node has storage as the only reason for
unable to allocate.
The reactive storage decider does not try to look into the future, thus
at the time the reactive decider asks to scale up, the cluster is
already in a need for more storage.