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[FIXED] When scaling down a stream make sure consumers are adjusted properly. #5927

Merged
merged 1 commit into from
Sep 25, 2024
Merged

[FIXED] When scaling down a stream make sure consumers are adjusted properly. #5927

merged 1 commit into from
Sep 25, 2024

Commits on Sep 25, 2024

  1. When scaling down a stream make sure replica count is correct if adju… 

    …sted and also make sure we do not have orphan consumers.

When we scale down a replicated stream, say R5, if it has consumers that are a lower replica count, say R1, they could be placed on the peers that may go away. We need to make sure we properly assign peers and transfer state as needed.

Note the consumer state transfer expects the state to be stable, so should be paused.

Signed-off-by: Derek Collison <[email protected]>
    @derekcollison
    derekcollison committed Sep 25, 2024
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