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Frozen autoscaling should not use local storage#71541

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henningandersen merged 5 commits intoelastic:masterfrom
henningandersen:fix_frozen_autoscaling_not_based_on_local_storage
Apr 15, 2021
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Frozen autoscaling should not use local storage#71541
henningandersen merged 5 commits intoelastic:masterfrom
henningandersen:fix_frozen_autoscaling_not_based_on_local_storage

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The reactive decider no longer applies to the frozen tier, since it
could grossly over-estimate the amount of storage for unassigned frozen
shards.

Relates #71042

In principle this is a breaking change since existing decider configurations of
reactive on purely frozen tiers would no longer be legal. However, since
frozen tier was experimental in 7.12, frozen searchable snapshots likewise and reactive storage decider has no configuration elements, it is highly unlikely to affect anyone and only users having opt'ed in to experimental functionality.

Alternatively, we can make the reactive decider do nothing on purely frozen in 7.x.

The reactive decider no longer applies to the frozen tier, since it
could grossly over-estimate the amount of storage for unassigned frozen
shards.

Relates elastic#71042
@henningandersen henningandersen added >bug v8.0.0 :Distributed/Autoscaling Automatically adding or removing nodes in a cluster v7.13.0 labels Apr 11, 2021
@elasticmachine elasticmachine added the Team:Distributed Meta label for distributed team. label Apr 11, 2021
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Pinging @elastic/es-distributed (Team:Distributed)

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LGTM.

@henningandersen
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@elasticmachine update branch

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@elasticmachine update branch

@henningandersen henningandersen merged commit 263739f into elastic:master Apr 15, 2021
henningandersen added a commit that referenced this pull request Apr 15, 2021
The reactive decider no longer applies to the frozen tier, since it
could grossly over-estimate the amount of storage for unassigned frozen
shards.

Relates #71042
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>bug :Distributed/Autoscaling Automatically adding or removing nodes in a cluster Team:Distributed Meta label for distributed team. v7.13.0 v8.0.0-alpha1

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4 participants